Patent ID: 12196160

DESCRIPTION OF THE PREFERRED EMBODIMENT

Although the disclosure hereof is detailed and exact to enable those skilled in the art to practice the invention, the physical embodiments herein disclosed merely exemplify the invention which may be embodied in other specific structures. While the preferred embodiment has been described, the details may be changed without departing from the invention, which is defined by the claims.

With attention toFIG.1, a fuel system first embodiment2of the invention comprising a port fuel liquid propane injection system3is described. The fuel system first embodiment2comprises a fuel tank4, a base tank valve adaptor (BTVA) assembly16, a distribution block27, at least on fuel rail30, and an electronic control unit (ECU)36in communication for the controlled distribution of fuel to an engine assembly (not illustrated in the figure).6. The fuel tank shell6defines an internal cavity8of the fuel tank4, wherein the internal cavity8provides for storage of fuel (115,124). An access panel12is in communication with an exterior surface10of the fuel tank4along an access panel second side17. Preferably the access panel12is in weldable communication with the fuel tank10along the access panel second side17. Alternatively, the access panel12may be in removable communication with the fuel tank4along the access panel second side17. An access panel first side11extends away from the fuel tank4, opposite the access panel second side17. The access panel first side11provides for at least one access port14. As illustrated inFIGS.5,9A-9C and10, at least one of the at least one access port14extends through the access panel12and proceeds through the fuel tank shell6, providing access to the internal cavity8of the fuel tank4. It is understood the invention may comprise one or more access ports14. At least one access port14may be an at least one BTVA port15. The at least one BTVA port15provides for the BTVA16. The BTVA comprises a BTVA first side18and a BTVA second side20. The BTVA first side in communication with the access panel12. The BTVA second side20is oppositely opposed to the BTVA first side18and extended away from the access panel12.

At least one supply line21is in communication with the BTVA second side20. The supply line21in extended communication from the BTVA second side20such that the supply line21extends away from the access panel12, wherein in fuel travels through the supply line21in a first direction22away from the fuel tank4. At least one return line23is in communication with the BTVA second side20. The return line23in extended communication from the BTVA second side20such that the return line23extends away from the access panel12, wherein in fuel travels through the return line23in a second direction24in the direction of the fuel tank4.

The distribution block27is in communication with a supply line second end25of the supply line21. Fuel travels from the BTVA16, through the supply line21. Past the supply line second end25, and into the distribution block27. The distribution block27is in communication with a return line second end26of the return line23. Wherein fuel returning to the fuel tank4, travels from the distribution block27, past the return line second end26and into the return line23, through the BTVA, and into the fuel tank4. The distribution block is in communication with at least one distribution block to fuel rail tube28. Wherein a distribution block to fuel rail tube first end29of the distribution block to fuel rail tube28is in communication with the distribution block27. Further, a distribution block to fuel rail tube second end19of the distribution block to fuel rail tube28is in communication with at least one fuel rail30at a fuel rail first end32of the fuel rail30. Wherein fuel (115,124) travels in a seventh direction240from the distribution block27, past the distribution block to fuel rail tube first end29and into the distribution block to fuel rail tube28, through the distribution block to fuel rail tube28, past the fuel rail first end32and into the fuel rail30.

The fuel rail30comprises the fuel rail first end32and a fuel rail second end33, wherein the fuel rail first end32and the fuel rail second end33are separated by a fuel rail body41. The combination of the fuel rail first end32, the fuel rail second end33and the fuel rail body41having a fuel rail length34. At least one port injection fuel injector assembly31is positioned along the fuel rail length34of the fuel rail30. The port injection fuel injector assembly31comprises at least one of a port injection fuel injector43, port injection fuel injector/nozzle tube51, and port injection injector nozzle54. Wherein the port injection fuel injector assembly31provides for transferring of fuel (not illustrated in the figure) from the fuel rail30to the engine assembly (not illustrated in the figure).

At least one of the at least one fuel rail30is in communication with at least one fuel rail to distribution block tube35. The fuel rail30is in communication with a fuel rail to distribution block tube first end55of the fuel rail to distribution block tube35at the fuel rail second end33. Further, a fuel rail to distribution block tube second end56of the fuel rail to distribution block tube35is in communication with the distribution block27. Wherein fuel travels in a fourth direction145from the fuel rail30, past the fuel rail to distribution block tube first end55and into the fuel rail to distribution block tube35, through the fuel rail to distribution block tube35, past the fuel rail to distribution block tube second end56and into the distribution block27for return to the fuel tank4.

The ECU36is in electrical communication with the pump (not illustrated in the figure) through the ECU/pump communication37. The ECU36is in electrical communication with at least one of the at least one port injection fuel injector assemblies31through the ECU/fuel injector assembly communication38. Further the ECU/fuel injector assembly communication38provides for at least one ECU/fuel injector assembly communication extender39to provide for electrical communication to individual port fuel injector assemblies31. The ECU36is in electrical communication with the distribution block27through the ECU/distribution block communication40. The combination of the communication between the ECU36and at least one at least port one fuel injector assembly31, the ECU and the pump, and the ECU36and the distribution block27provides for controlling the distribution of fuel (115,124) to the engine assembly (not illustrated in the figure), and provides for controlling the fuel in at least substantially a liquid state within the fuel system second embodiment2′. Fuel (115,124) as descried may be in at least one of a liquid (115), vapor (124) or solid state. Fuel (115,124) as described may be propane. Alternatively, fuel (115,124) as described may be any form of fuel known in the industry.

IL is observed the fuel system first embodiment2of the invention comprising a port fuel liquid propane injection system3maintains a positive pressure differential on the fuel (115,124) between a pressure on the fuel in the fuel tank4and a pressure on the fuel in the remainder of the fuel system first embodiment2. Therefore, the fuel (115,124) maintains a liquid state throughout the fuel system first embodiment2up to and beyond the disbursement of the fuel from the at least one port injection injector nozzle54and into the engine assembly (not illustrated in the figure).

It is understood elements of the fuel system first embodiment2of the invention comprising a port fuel liquid propane injection system3though described in the singular or the plurality may exists in either or both of the singular and the plurality within the fuel system first embodiment2of the invention comprising a port fuel liquid propane injection system3.

With attention toFIG.2, a fuel system second embodiment2′ of the invention comprising a direct injection system57is described. The fuel system second embodiment2′ of the invention comprising a direct injection system57incorporates the fuel tank4, the supply line21, the return line23, and the distribution block27of the fuel system first embodiment2of the invention comprising a port fuel liquid propane injection system3. The distribution block27is in communication with at least one distribution block to common rail tube44. Wherein a distribution block to common rail tube first end45of the distribution block to common rail tube44is in communication with the distribution block27. Further, a distribution block to common rail tube second end58of the distribution block to common rail tube44is in communication with at least one common fuel rail42. Wherein fuel travels from the distribution block27, past the distribution block to common rail tube first end45and into the distribution block to common rail tube44. The fuel travels in a third direction46through the distribution block to common rail tube44, towards the common fuel rail42. The fuel (115,124) proceeds into the common fuel rail42.

At least one common rail/direct fuel injector tube47is in communication with the common fuel rail42and at least one direct injection fuel injector assembly59at oppositely opposed ends of the common rail/direct fuel injector tube47. The direct injection fuel injector assembly59comprises at least one of a direct injection fuel injector48, direct injection fuel injector/nozzle tube49, and direct injection fuel injector nozzle50. Wherein the common rail/direct fuel injector tube47provides for transfer of fuel (not illustrated in the figure) from the common rail42to an at least one direct injection fuel injector48. The at least one direct injection fuel injector/nozzle tube49is in communication with the at least one of the at least one direct fuel injectors48and at least one direct injection injector nozzle50at oppositely opposed ends of the direct injection fuel injector/nozzle tube49. Wherein the direct injection fuel injector/nozzle tube49provides for transfer of fuel (not illustrated in the figure) from the at least one direct fuel injector48to the at least one direct injection injector nozzle50and into the engine assembly (not illustrated in the figure). Wherein the direct injection fuel injector assembly59provides for transferring of fuel (not illustrated in the figure) from the common fuel rail42to the engine assembly (not illustrated in the figure).

The ECU36is in electrical communication with the pump (not illustrated in the figure) through the ECU/pump communication37. The ECU36is in electrical communication with at least one of the at least one direct injection fuel injector assemblies59through the ECU/direct injection fuel injector assembly communication52. Further the ECU/direct injection fuel injector assembly communication52provides for at least one ECU/direct injection fuel injector assembly communication extender53to provide for electrical communication to individual direct injection fuel injector assemblies59. The ECU36is in electrical communication with the distribution block27through the ECU/distribution block communication40. The combination of the communication between the ECU36and at least one at least one direct injection fuel injector assembly59, the ECU36and the pump, and the ECU36and the distribution block27provides for controlling the distribution of fuel (115,124) to the engine assembly (not illustrated in the figure), and provides for controlling the fuel in at least substantially a liquid state with the fuel system second embodiment2′.

It is observed the fuel system second embodiment2′ of the invention comprising a direct injection system57maintains a positive pressure differential on the fuel (115,124) between a pressure on the fuel in the fuel tank4and a pressure on the fuel in the remainder of the fuel system second embodiment2′. Therefore, the fuel (115,124) maintains a liquid state throughout the fuel system second embodiment2′ up to and beyond the disbursement of the fuel from the at least one direct injection injector nozzle50and into the engine assembly (not illustrated in the figure).

It is understood elements of the fuel system second embodiment2′ of the invention comprising a direct injection system57though described in the singular or the plurality may exist in either or both of the singular and the plurality within the fuel system second embodiment2′ of the invention comprising a direct injection system57.

With attention toFIG.3, a fuel system third embodiment2″ of the invention comprising a port fuel liquid propane injection system3and a direct injection system57. It is understood the system third embodiment2″ of the invention may comprise a port fuel liquid propane injection system3and a direct injection system57wherein an external pump assembly137is applied to the direct injection system57. It is understood the fuel system third embodiment2″ may comprise at least one element of the fuel system first embodiment2. It is understood the fuel system third embodiment2″ may comprise at least one element of the fuel system second embodiment2′.

It is observed the fuel system third embodiment2of the invention maintains a positive pressure differential on the fuel (115,124) between a pressure on the fuel in the fuel tank4and a pressure on the fuel in the remainder of the fuel system third embodiment2″. Therefore, the fuel (115,124) maintains a liquid state throughout the fuel system third embodiment2″ up to and beyond the disbursement of the fuel from at least one of the at least one direct injection injector nozzle50and the at least one port injection injector nozzle54, and into the engine assembly (not illustrated in the figure).

The system view of a fuel system third embodiment2″ of the invention comprising a port fuel liquid propane injection system and a direct injection system may apply an external pump assembly137to the direct injection system.

It is understood elements of the fuel system third embodiment2″ of the invention though described in the singular or the plurality may exist in either or both of the singular and the plurality within the fuel system third embodiment2″.

With attention toFIGS.4and5, the fuel tank4is illustrated. The fuel tank4comprises a fuel tank shell6. Wherein the fuel tank shell6is defined by a fuel tank first side5and an oppositely opposed fuel tank second side7separated by a fuel tank cylindrical body9. The communication of the fuel tank first side5, the fuel tank second side7and the fuel tank cylindrical body9provides for the fuel tank shell6. As previously noted, the fuel tank shell6defines an internal cavity8of the fuel tank4, wherein the internal cavity8provides for storage of fuel (not illustrated in the figure). The fuel tank shell6preferably provides for a fuel tank4having a cylindrical shape. Alternatively, the fuel tank4may comprise a polygonal cross-section over a fuel tank length60. Alternatively, the fuel tank4may comprise a spherical shape. Alternatively, the fuel tank4may comprise a polyhedron shape.

As illustrated inFIG.5, a cross-section of the fuel tank4, the fuel tank4preferably comprises at least one partition61. The partitions61preferably extend at least substantially the fuel tank length60. Alternatively, the partitions61may extend less than substantially the fuel tank length60. The partitions60comprise at least one of at least one static partition62and at least one removable partition63. The static partition62is preferably in weldable communication with an interior surface64of the fuel tank shell6. Alternatively, the static partition62may be in riveted communication with the fuel tank shell6. Alternatively, the static partition62may be in bolted communication with the fuel tank shell6.

As illustrated inFIGS.1,2,3and5, the access panel12is in communication with an exterior surface10of the fuel tank4along an access panel second side17. The access panel first side11extends away from the fuel tank4, opposite the access panel second side17.

With attention toFIGS.6A,6B and6C, the access panel12is further disclosed. As illustratedFIG.6A, a front view of the access panel12illustrating an at least one access panel port14. The access panel first side11provides for the at least one access port14. The at least one access port14comprises at least one of an at least one fill port65, an at least one liquid level gauge port67, an at least one service valve port68, an at least one second fill port69, an at least one spitter valve port70, an at least one pressure relief valve port71, an at least one liquid port72and the at least one BTVA port15. It is observed the orientation of the at least one of an at least one fill port65, the at least one liquid level gauge port67, the at least one service valve port68, the at least one second fill port69, the at least one spitter valve port70, the at least one pressure relief valve port71, the at least one liquid port72and the at least one BTVA port15is not limited to what is illustrated in the figures. As illustrated inFIG.5, at least one of the at least one access port14may provide for a bore84where in the bore84extends through the access panel12and proceeds through the fuel tank shell6, providing access to the internal cavity8of the fuel tank4. As illustrated inFIG.4, the combination of the at least one of the at least one access ports14and the bore84associated with the at least one access port14may provide for at least one groove82about the circumference83of the bore84, wherein an at least one component74may be in removable communication with the access panel12. As illustrated inFIG.6A, at least one of the at least one access ports14may provide for at least one mounting hole73about a port circumference85of at least one of the at least one access ports14, wherein an at least one component74may be in removable communication with the access panel12. As illustrated inFIG.6B, the at least one BTVA port15may provide for at least one at least one mounting hole73about the port circumference85of the at least one BTVA port15. As illustrated inFIG.6B, a front view of an access panel12illustrating at least one component107in communication with the at least one access panel ports14, the at least one fill port65may be in removable communication with an at least one fill port assembly75, wherein the combination of the at least one fill port65and the at least one fill port assembly75provides for filling the fuel tank4with fuel (not illustrated in the figure) to at least 80% volumetric capacity of the fuel tank4. The at least one liquid level gauge port67may be in removable communication with an at least one sending unit76, wherein the at least one sending unit76may communicate with a fixed level gauge remote from the fuel tank4. The at least one service valve port68may be in removable communication with an at least one of an at least one pressure gauge and at least one service valve77, wherein a pressure within the fuel tank4may be measured. The at least one second fill port69may be in removable communication with an at least one second fill port assembly78, wherein the combination of the at least one second fill port69and the at least one second fill port assembly78provides for filling the fuel tank4with fuel (not illustrated in the figure) to at least 80% volumetric capacity of the fuel tank4. The at least one spitter valve port70may be in removable communication with at least one spitter valve79, wherein gas and evaporation may be removed from the fuel tank4. The at least one pressure relief valve port71may be in removable communication with at least one pressure relief valve80, wherein within the fuel tank4may be controlled by release of fuel tank4contents. The at least one liquid port72may be in removable communication with at least one liquid valve81, wherein liquid fuel within the fuel tank may be released.

The at least one BTVA port15may be in removable communication with at least one BTVA16. The atleast one BTVA16comprises a first pill150providing access to the first bore96(ref.FIG.8) on the BTVA second side20, wherein the return line23is in removable communication with the first bore96. Alternatively, the at least one BTVA16comprises a first pill150providing access to the first bore96on the BTVA second side, wherein the return is in fixed communication with the first bore96. The first pill150providing for control of the flow of liquid fuel115to the fuel tank4in order to maintain liquid fuel115throughout the (system2,2′,2″), controls back pressure of the closed loop. The at least one BTVA16comprises a supply solenoid control manual shut-off valve152providing access to the second bore96(ref.FIG.8) on the BTVA second side20, wherein the supply line21is in removable communication with the second bore98. Alternatively, the at least one BTVA16comprises the supply solenoid control manual shut-off valve152providing access to the second bore98on the BTVA second side20, wherein the supply line21is in fixed communication with the second bore98. The supply solenoid control manual shut-off valve152may be accompanied by a supply solenoid control manual shut-off valve plate153in communication with the BTVA second side20. The at least one BTVA16comprises a third bore fastener151providing access to the third bore102(ref.FIG.8) on the BTVA second side20, wherein the ECU/pump communication37is in removable communication with the third bore102. Alternatively, the atleast one BTVA16comprises a third bore fastener151providing access to the third bore102(ref.FIG.8) on the BTVA second side20, wherein the ECU/pump communication37is in fixed communication with the third bore102. The supply solenoid control shut-off valve152is a manual shut-off valve for safety requirements.

As illustrated inFIG.6C, a front view of an access panel, the access panel may provide for at least one BTVA16in communication with the access panel. A second BTVA86is provided in communication with the access panel12. The arrangement of the access panel12illustrated inFIG.6Cmay be employed in many scenarios, at least two scenarios are 1) high performance applications, and 2) the fuel system third embodiment2″ with a pulse switch modulated pump (not illustrated in the figures). In scenarios the fuel system third embodiment2″ with the pulse switch modulated pump (not illustrated in the figures), and other scenarios employing the fuel system third embodiment2″, the BTVA16may be connected to the solenoid control manual shut-off valve152which as described is connected to the distribution block which as described is connected to the fuel rails. Wherein the second BTVA86is connected to a second solenoid control manual shut-off valve152′ which as described may be connected to a high pressure pump for a direct injection system.

With attention toFIGS.7and8, the BTVA16is further disclosed. As illustrated inFIG.7A, a back view of the BTVA16is illustrated. The BTVA comprises a BTVA first section87and a BTVA second section88in communication such that the BTVA first side18of the BTVA first section87is in direct communication with the BTVA second section88. A BTVA second section inner face92extends opposite the BTVA first side18of the BTVA first section87, wherein the BTVA second section88is in close communication with the port circumference85of the BTVA port15when the BTVA16is complemented with the access panel12. At least one BTVA mounting hole89is in close proximity to the perimeter104of the BTVA first section87, wherein at least one of the BTVA mounting holes89extends from the BTVA first side18to the BTVA second side20. At least one of the BTVA mounting holes89is in alignment with at least one mount hole73about the port circumference85of the at least one BTVA port15wherein the communication of the at least one of the BTVA mounting holes89and at least one mount hole73, about the port circumference85of the at least one BTVA port15, provides for complementing the BTVA16with the access panel12. At least one mounting bolt165is in insertable and removable communication with the aligned at least one of the BTVA mounting holes89and at least one mount hole73. The BTVA second section88provides for a second section perimeter105at least in substantial proximity to the BTVA first section. A first seal90is positioned on the BTVA first side18about the second section perimeter105, wherein the first seal90extends at least substantially about the second section perimeter105. The first seal90communicates with the access panel first11, when the BTVA16and access panel12are complemented, to provide for sealable communication. The second section perimeter105extends from at least in substantial proximity to the BTVA first section to the BTVA second section inner face92. A second seal91is positioned at least substantially about second section perimeter105at a predetermined location between the BTVA first section and the BTVA second section inner face92, wherein the second seal91provides for sealable communication between the BTVA second section88and the port circumference85of the BTVA port15when the BTVA16is complemented with the access panel12.

At least one, preferably three, BTVA bores93extend from the BTVA second side20, the BTVA first section87and the BTVA second section88, and to and beyond the BTVA second section inner face92, wherein the BTVA bores93provide access to the internal cavity8of the fuel tank4when the BTVA16is complemented with the access panel12. A first bore96is in communication with the return line23. The first bore96provides for communication of the return line23to a return shaft97, connected to the BTVA second section inner face92side of the first bore96, wherein fuel (not illustrated in the figure) returns to the fuel tank4. The connection of the return shaft97to the first bore96may be assisted by a fitting assembly154. A second bore98is in communication with the supply line21. The second bore98provides for communication of the supply line21to a pump100via a pump connection99, where the pump connection99is connected to the BTVA second section inner face92side of the second bore98and to the pump100such that fuel is propelled from the pump100through the second bore98and into the supply line21. The pump may be in removable communication with the BTVA second section inner face92thru the application of a mechanism101. Alternatively, the pump may be in fixed communication to the BTVA second section inner face92thru the application of mechanism101. A third bore102is in communication with the ECU pump/communication37. The third bore102provides for continued communication of the ECU pump/communication37through the third bore102and to the pump100, wherein the ECU36communicates to the pump100to provide for at least one of turning on the pump100and turning off the pump100as directed by the demand of the system (2,2′,2″). Communication of the ECU pump/communication37from the BTVA second section inner face92opening106of the third bore102to the pump100may be provided through an electrical extension103.

With attentionFIGS.9A,9B and9C, the fuel tank4in communication with the access panel12, illustrating communication of at least one component107with the fuel tank4. As illustrated inFIG.9A, the fill port assembly75extends through the fill port65and into the internal cavity8of the fuel tank4. Within the internal cavity8, the fill port assembly75provides for a fill port assembly tube108. The fill port assembly tube108having an angled orientation111in the direction of a fuel tank third side109. The sending unit76extends through the liquid level gauge port67. A sending unit internal section112provides for a float assembly114. Wherein the sending unit76applies the float assembly114to measure a level pf liquid fuel115within the fuel tank4. The pressure gauge77extends through the service valve port68and into the internal cavity8. A second fill port assembly78extends through the second fill port69and into the internal cavity8of the fuel tank4. Within the internal cavity8, the second fill port assembly78provides for a second fill port assembly tube116. The second fill port assembly tube116having a second angled orientation117in the direction of the fuel tank third side109.

As illustrated inFIG.9B, the liquid valve81extends through the liquid port72. Within the internal cavity8, the liquid valve81provides for a liquid valve tube120. The liquid valve tube120having a third angled orientation121in the direction of a fuel tank third side109. Alternatively, the liquid valve tube120may have a third angled orientation121substantially perpendicular to the access panel12for a duration of a liquid valve tube length122. The pressure relief valve80extending through the pressure relief valve port71and into the internal cavity8. The spitter valve79extends through the spitter valve port70. Within the internal cavity8, the spitter valve79provides for a spitter valve tube118. The spitter valve tube118having a spitter valve angled orientation119in the direction of a fuel tank fourth side110.

As illustrated inFIG.9C, a first pump position135is described. The pump100preferably resides upon a fuel acquisition cushion125. The fuel acquisition cushion125resides upon the fuel tank third side internal surface126. Wherein the fuel acquisition cushion125provides a method for providing the pump100with liquid fuel115to distribute into the system (2,2′,2″). Alternatively, the pump100resides directly upon the fuel tank third side internal surface126. The return shaft97having a return shaft length127. Wherein the return shaft97extends into the internal cavity8through at least substantially the return shaft length127. The return shaft97having a fourth angled orientation123in the direction of a fuel tank fourth side110. Preferably a return shaft end point128, opposite the BTVA second section inner face92, is in contact with a vapor section129of the internal cavity8. Wherein fuel returns to the fuel tank4within the return line23, the fuel transfers to the return shaft97, the fuel proceeds through the return shaft97and exists the return shaft97at the return shaft end point128. The fuel existing the return shaft end point128transforms at least substantially to a vapor fuel124. The transformation of the fuel from substantially a liquid fuel115to a vapor fuel124provides for an endothermic transformation, cooling the internal cavity8and the vapor124and liquid fuel115within the internal cavity8. The cooling promotes transformation of vapor fuel124to liquid fuel115and the maintaining of the fuel as liquid fuel115within the system (2,2′,2″).

With attention toFIG.10, the fuel tank4in communication with the access panel12wherein the pump100is in close communication with the BTVA16, a second pump position135′ is described. A housing130is in communication with the BTVA second section inner face92. The housing130comprises a three dimensional body131having an exterior shell132which defines a housing internal cavity133. An exterior shell external surface134, opposite the housing internal cavity133, is in communication with the BTVA second section inner face92. The exterior shell external surface134, opposite the housing internal cavity133, is preferably in fixed communication with the BTVA second section inner face92. Alternatively, the exterior shell external surface134, opposite the housing internal cavity133, may be in removable communication with the BTVA second section inner face92. The exterior shell132provides for a housing opening136, wherein the housing opening136allows for transfer of fuel, both liquid fuel115and vapor fuel124, between the internal cavity8and the housing internal cavity133. The pump100is positioned on a second embodiment of a fuel acquisition cushion125′, wherein the second embodiment of a fuel acquisition cushion125′ provides for transfer of liquid fuel115within the housing internal cavity133to the pump100. Alternatively, the pump100may be positioned in the housing internal cavity133absent the fuel acquisition cushion125′. The second pump position135′ provides for ease of maintenance on the pump100. In the first pump position135, maintenance on the pump100requires removal of at least substantially all the liquid fuel115from the fuel tank4prior to conducting maintenance upon the pump100. However, in the second pump position135′, due to the communication between the BTVA second section inner face92and the housing130, maintenance on the pump100requires the mere removal of the BTVA from communication with the access panel12. Once the BTVA is removed from communication with the access panel12, the housing130is removed from the fuel tank4as well, allowing for maintenance upon the pump100. The second pump position135′ does not require removal of at least substantially all the liquid fuel115from the fuel tank4prior to maintenance upon the pump100.

With attention toFIGS.11A,11B and11C, an external pump assembly137is disclosed as applied to at least one of at least one of the fuel system first embodiment2, the fuel system second embodiment2′ and the fuel system third embodiment2″. It is understood the external pump assembly137may be incorporated in addition with the pump100within the fuel tank4. Alternatively, the external pump assembly137may be incorporated to the exclusion of the pump100within the fuel tank4. Where the external pump assembly137is incorporated to the exclusion of the pump100within the fuel tank4, a fuel tank second embodiment4′ may be incorporated. A fuel tank second embodiment4′ may include but is not exclusive to a propane tank143. In at least one of the fuel system first embodiment2, the fuel system second embodiment2′ and the fuel system third embodiment2″, the external pump assembly137may be applied. Specifically, it is understood the system third embodiment2″ of the invention may comprise a port fuel liquid propane injection system3and a direct injection system57wherein an external pump assembly137is applied to the direct injection system57. The supply line second end25is connected to the external pump assembly137, wherein fuel is transferred from the fuel tank4into the supply line21, through the supply line21and into the external pump assembly137. The external pump assembly137comprises an external pump cylinder144and the BTVA16. The BTVA16is in sealable communication with the external pump cylinder144. A control valve148of an external pump/distribution block line138is in communication with the second bore98. The control valve148is a solenoid controlled by the ECU36from the pump100. The second bore98provides for communication of the external pump/distribution block line138to the pump100within the external pump assembly137. An external pump/distribution block line second end149, opposite the control valve148, of the external pump/distribution block line138is connected to the distribution block27, wherein fuel travels in a fifth direction139from the external pump assembly137through the external pump/distribution block line138and into the distribution block27. An overflow line first end146, a first check valve, of an overflow line140is in communication with the first bore96. An overflow line second end147, opposite the overflow line first end146, the first check valve, is in communication with a second check valve264. Wherein fuel travels in a sixth direction141from the external pump assembly137through the overflow line140and through the second check valve264, into a return line second section267, which is part of the return line23, and back to the fuel tank4. It is observed the return line23remains connected between the distribution block27and the fuel tank4, wherein fuel also returns from the distribution block in a second direction24through the return line23and into the fuel tank4. The second check valve264may be attached to the return line23, allowing for the combination of the fuel returning from the external pump assembly137in the overflow line140with the fuel returning from the distribution block in the return line23. Following the second check vale264, the combination of the fuel returning from the external pump assembly137in the overflow line140with the fuel returning from the distribution block in the return line23returns to the fuel tank4within the return line second section267.

It is observed at least one of the fuel system first embodiment2, fuel system second embodiment2′, and fuel system third embodiment2″ incorporates at least one of a first in line filter291along the at least one supply line21.

As illustrated inFIGS.11B and11C, the overflow line140is in removable communication with the BTVA16through the first pill150. Alternatively, the overflow line140is in fixed communication with the BTVA16through the first pill150. The external pump/distribution block line138is in removable communication with the BTVA16through the supply solenoid control manual shut-off valve152. Alternatively, the external pump/distribution block line138is in fixed communication with the BTVA16through the supply solenoid control manual shut-off valve152. ECU/pump communication37is in removable communication with the BTVA16through the third bore fastener151. Alternatively, the ECU/pump communication37is in fixed communication with the BTVA16through the third bore fastener151. The ECU36controls the pump100and a solenoid electrical harness (not illustrated in the figures). The supply line second end25is in removable communication with the external pump assembly137through a fourth bore fastener142in sealable communication with a fourth bore161. The fourth bore fastener142may be a one-way check valve. Alternatively, the fourth bore fastener142may be other than a one-way check valve.

As further illustrated inFIG.11C, external pump assembly144comprises the external pump cylinder144and the BTVA16in sealable communication. The BTVA16provides for the same elements as described for the BTVA16previously in this invention, further the components attached to the BTVA16, including but not limited to the pump100and the electrical extension103, provide for the same elements and features as previously described in this invention. The external pump cylinder144comprises an external cylinder wall155defined by an external cylinder first end156and an external cylinder second end157. The external cylinder first end156is a closed end158, wherein in the closed end158is nonporous. Further, the external cylinder first end156preferably comprises a concave surface with respect to an external cylinder cavity160. Alternatively, the external cylinder first end156may comprise a convex surface with respect to an external cylinder cavity160. Alternatively, the external cylinder first end156may comprise a flat surface with respect to an external cylinder cavity160. The oppositely opposed external cylinder second end157is defined by a finality159of the external cylinder wall155, wherein the external cylinder second end157provides for an opening162defined by the internal cylinder wall163of the external cylinder wall155. It is noted the finality159extends at least substantially about the perimeter164of the external cylinder second end157. The combination of the external cylinder wall155, the external cylinder first end156and the external cylinder second end157define the external cylinder cavity160.

The BTVA16is complimented with and in sealable communication with the external cylinder second end157, wherein the BTVA second section88is inserted into the external cylinder cavity160. The BTVA second section88is in sealable communication with the internal cylinder wall163. The sealable communication between the BTVA second section88and the internal cylinder wall163is provided by the close communication of the second seal91of the BTVA second section88, wherein the second seal91is positioned at least substantially about second section perimeter105at a predetermined location between the BTVA first section and the BTVA second section inner face92, and the internal cylinder wall163of the external cylinder wall155. Sealable communication between the BTVA16and the external cylinder second end157is further provided by the first seal90which is positioned on the BTVA first side18and at least substantially about the second section perimeter105. Wherein the first seal90communicates with the finality159, when the BTVA16and external cylinder second end157are complemented, to provide for sealable communication.

The finality159provides for at least one mount hole73about the perimeter164. At least one of the BTVA mounting holes89is in alignment with at least one mount hole73about the perimeter164wherein the communication of the at least one of the BTVA mounting holes89and at least one mount hole73provides for complementing the BTVA16with the external pump cylinder144. At least one mounting bolt165is in insertable and removable communication with the aligned at least one BTVA mounting holes89and at least one mount hole73.

Insertion of the BTVA second section88into the external cylinder cavity160provides for insertion of the pump100and pump connection99, and the electrical extension103into the external cylinder cavity160. The pump100preferably rests upon or in close proximity to the closed end158. The pump100preferably is in communication with a fuel acquisition cushion (125,125′). Operation of the BTVA16and associated components in the external fuel pump are as described for the BTVA16as installed into a fuel tank4.

With attention toFIGS.12A,12B,12C,12D12E,12F and12G, the distribution block27is further disclosed. As illustrated inFIG.12A, the distribution block27is a three dimensional structure167comprising a first member168and a second member169. The first member168comprising a first member first side170and an oppositely opposed first member second side171separated by a first member body174. The first member body174having at least three sides172, wherein the at least three sides172extend a first member length173from the first member first side170to the first member second side171. The combination of the first member first side170, the first member second side171and the first member body174comprises the first member168, wherein the first member168is a prism175.

The second member169comprising a second member first side176and an oppositely opposed second member second side177separated by a second member body178. The second member body178having at least three sides172, wherein the at least three sides172extend a second member length179from the second member first side176to the second member second side177. The combination of the second member first side176, the second member second side177and the second member body178comprises the second member169, wherein the first second member169is a prism175.

The first member168and the second member169are in communication182along atleast substantially the first member length173of a first member body first side183and at least substantially the second member length179of a second member body first side184. Alternatively, the first member168and the second member169are in communication182along less than substantially the first member length173of a first member body first side183and less than substantially the second member length179of a second member body first side184.

The first member first side170provides for at least one first distribution block bore180. The first member second side171provides for at least one second distribution block bore181. At least one first member body side185provides for at least one third distribution block bore186. At least one first member body side185provides for at least one fourth distribution block bore187. At least one first member body side185provides for at least one fifth distribution block bore188.

Preferably, the third distribution block bore186, the fourth distribution block bore187and the fifth distribution block bore188are positioned along the first member length173wherein the fourth distribution block bore187is positioned between the third distribution block bore186and the fifth distribution block bore188. Preferably, each of the third distribution block bore186, the fourth distribution block bore187and the fifth distribution block bore188are positioned on a first member body second side189.

The second member first side176provides for at least one sixth distribution block bore190. The second member second side177provides for at least one seventh distribution block bore191. At least one second member body side192provides for at least one eighth distribution block bore193. At least one second member body side192provides for at least one ninth distribution block bore194. At least one second member body side192provides for at least one tenth distribution block bore195.

Preferably, the eighth distribution block bore193, the ninth distribution block bore194and the tenth distribution block bore195are positioned along the second member length179wherein the ninth distribution block bore194is positioned between the eighth distribution block bore193and the tenth distribution block bore195. Preferably, each of the eighth distribution block bore193, the ninth distribution block bore194and the tenth distribution block bore195are positioned on a second member body second side196.

At least one of a test bore cap197and a test port nut199may be positioned over a test bore200(referenceFIG.12B). At least one of the test bore cap197and the test bore nut199are in removable communication with the test bore200. The test bore200is positioned on a first member body third side198.

As illustrated inFIG.12B, the first distribution block bore180is in fixed communication a first member body bore channel201. The first member body bore channel201providing for a first member body bore channel cavity202extending through the first member body174from at least a substantial proximity to the first member first side170to a substantial proximity to the first member second side171. Wherein fuel may transfer through the first distribution block bore180and into the first member body bore channel201. The second distribution block bore181is in fixed communication a first member body bore channel201, opposite the communication between the first distribution block bore180and the first member body bore channel201. Wherein fuel may transfer through the first distribution block bore180and into the first member body bore channel201.

The third distribution block bore186intersects the first member body bore channel201at a third distribution block bore/first member body bore channel intersection203, wherein fuel may travel through the third distribution block bore/first member body bore channel intersection between the third distribution block bore186and the first member body bore channel201. The fourth distribution block bore187intersects the first member body bore channel201at a fourth distribution block bore/first member body bore channel intersection204, wherein fuel may travel through the fourth distribution block bore/first member body bore channel intersection between the fourth distribution block bore187and the first member body bore channel201. The fifth distribution block bore188intersects the first member body bore channel201at a fifth distribution block bore/first member body bore channel intersection205, wherein fuel may travel through the third distribution block bore/first member body bore channel intersection205between the fifth distribution block bore188and the first member body bore channel201. The test bore200intersects the first member body bore channel201at a test bore/first member body bore channel intersection206, wherein fuel may travel through the test bore/first member body bore channel intersection206between the test bore200and the first member body bore channel201. The test bore provides for an ability to test the pressure of the system (2,2′,2″) while in the field, and does not require interaction with the ECU36during the testing.

The sixth distribution block bore190is in fixed communication a second member body bore channel207. The second member body bore channel207providing for a second member body bore channel cavity208extending through the second member body178from at least a substantial proximity to the second member first side176to a substantial proximity to the second member second side177. Wherein fuel may transfer through the second member body bore channel207and into the sixth distribution block bore190. The seventh distribution block bore191is in fixed communication with the second member body bore channel207, opposite the communication between the sixth distribution block bore190and the second member body bore channel207. Wherein fuel may transfer through the second member body bore channel207and into the seventh distribution block bore191.

The eighth distribution block bore193intersects the second member body bore channel207at an eighth distribution block bore/second member body bore channel intersection209, wherein fuel may travel through the eighth distribution block bore/second member body bore channel intersection209between the eighth distribution block bore193and the second member body bore channel207. The ninth distribution block bore194intersects the second member body bore channel207at a ninth distribution block bore/second member body bore channel intersection210, wherein fuel may travel through the ninth distribution block bore/second member body bore channel intersection210between the ninth distribution block bore194and the second member body bore channel207. The tenth distribution block bore195intersects the second member body bore channel207at a tenth distribution block bore/second member body bore channel intersection211, wherein fuel may travel through the tenth distribution block bore/second member body bore channel intersection211between the tenth distribution block bore195and the second member body bore channel207.

It is observed at least one of the first distribution block bore, the second distribution block bore181, the third distribution block bore186, the fourth distribution block bore187, the fifth distribution block bore188, the test bore200, the sixth distribution block bore190, the seventh distribution block bore191, the eighth distribution block bore193, the ninth distribution block bore194and the tenth distribution block bore195may provide at least one groove82about the distribution block bore circumference212of the respective bore.

It is observedFIG.12Billustrates a first embodiment of the distribution block,275. It is observedFIG.12G, to be described, illustrates a second embodiment of the distribution block,277. It is observed at least one element of the first embodiment of the distribution block275may be complimented with at least one element of the second embodiment of the distribution block270.

As illustrated inFIG.12C, a front view of a first distribution block configuration279, a left side distribution block to rail tube (214,28) is in removable communication, thru a fitting241, with the sixth distribution block bore190, wherein fuel travels thru the sixth distribution block bore190and into the left side distribution block to rail tube (214,28), thru the left side distribution block to rail tube (214,28) and subsequently to a left side fuel rail (FIG.1;30). A left side fuel rail to distribution block tube (216,35) is in removable communication, thru a fitting241, with the first distribution block bore180, wherein fuel travels thru the left side fuel rail to distribution block tube (216,35) and into the first distribution block bore180.

A right side distribution block to rail tube (213,28) is in removable communication, thru a fitting241, with the seventh distribution block bore191, wherein fuel travels thru the seventh distribution block bore191and into the right side distribution block to rail tube (213,28), thru the right side distribution block to rail tube (213,28) and subsequently to a right side fuel rail (FIG.1;30). A right side fuel rail to distribution block tube (215,35) is in removable communication, thru a fitting241, with the second distribution block bore181, wherein fuel travels thru the right side fuel rail to distribution block tube (215,35) and into the second distribution block bore181.

As illustrated inFIG.12D, a front view of a second distribution block configuration280, the distribution block to common rail tube44is in removable communication, thru a fitting241, with the seventh distribution block bore191, wherein fuel travels thru the seventh distribution block bore191and into the distribution block to common rail tube44, thru the distribution block to common rail tube44and subsequently to the common fuel rail42. A plug224in inserted into the second distribution block bore181, wherein the plug224provides sealed communication with the second distribution block bore181. A recirculating tube217contains a recirculating tube first end218and a recirculating tube second end219. The recirculating tube first end218is in removable communication, thru a fitting241, the sixth distribution block bore190. The recirculating tube second end219is in removable communication, thru a fitting241, with the first distribution block bore180. Wherein fuel travels from the sixth distribution block bore190, thru the recirculating tube217, into the first distribution block bore180, subsequently into the fourth distribution block bore, and thru the return line23. A recirculating line solenoid220may be if fitted communication with the recirculating line217, wherein the recirculating line solenoid220controls a flow volume of fuel returning to the fuel tank4. The communication of the solenoid220to the distribution block27illustrated inFIG.12Damounts to a first embodiment of the solenoid in communication with the distribution block,272.

Alternatively, the distribution block to common rail tube44may be in removable communication, thru a fitting241, with the sixth distribution block bore190. Further, the recirculating tube first end218may be in removable communication, thru a fitting241, the seventh distribution block bore191. The recirculating tube second end219may be in removable communication, thru a fitting241, with the second distribution block bore181.

The control of fuel flow volume is determined by at least one of the pressure and the temperature of the fuel measured in the system (2,2′,2″). Where a pressure is at least one of lower than at least one or a calculated value and a calculated range, and a fuel temperature at least one of above a calculated value and above a calculated range, the solenoid actuates to stop the flow of fuel return to the fuel tank4in order to increase the pressure of the fuel. Where a pressure is at least one of above and equal to a calculated limit, and the temperature is below a calculated limit, the solenoid actuates to open the flow of fuel return to the fuel tank4. Measurement readings of at least one of the pressure of the fuel and temperature of the fuel are may be taken continuously. Alternatively, measurement readings of at least one of the pressure of the fuel and temperature of the fuel are may be taken intermittently.

As illustrated inFIG.12E, is a front view of a third distribution block configuration282providing for the fuel system third embodiment of the invention2″ comprising a port fuel liquid propane injection system and a direct injection system. The components of the distribution block providing the fuel system first embodiment of the invention2″, as illustrated inFIG.12C, are applied. The distribution block, providing for the fuel system third embodiment of the invention2″, provides for the direct injection system. The distribution block to common rail tube44is in removable communication, thru a fitting241, with the eighth distribution block bore193, wherein fuel travels thru the eighth distribution block bore193and into the distribution block to common rail tube44, thru the distribution block to common rail tube44and subsequently to the common fuel rail42. A plug224is in sealed communication with the tenth distribution block bore195(this plug224in sealed communication with the tenth distribution block bore195is not illustrated inFIG.12E). Alternatively, the distribution block to common rail tube44may be in removable communication, thru a fitting241, with the tenth distribution block bore195. A plug224may be in sealed communication with the eighth distribution block bore193(this plug224in sealed communication with the eighth distribution block bore193is not illustrated inFIG.12E).

As illustrated inFIG.12F, a front view of a fourth distribution block configuration284additionally illustrating temperature sensor, pressure sensor and solenoid locations, for at least one of the fuel system first embodiment of the invention2, the fuel system second embodiment of the invention2′ and the fuel system third embodiment of the invention2″, at least one of a temperature and a pressure sensor and solenoid223may be in sealable communication with at least one of the third distribution block bore186, the fifth distribution block bore188, the eighth distribution block bore193, and the tenth distribution block bore195. The distribution block to common rail tube44is in removable communication, thru a fitting241, with the eighth distribution block bore193, wherein fuel travels thru the eighth distribution block bore193and into the distribution block to common rail tube44, thru the distribution block to common rail tube44and subsequently to the common fuel rail42. It is observed the configuration illustrated inFIG.12Fwith the distribution block to common rail tube44is in removable communication, thru a fitting241, with the eighth distribution block bore193provides for the distribution block configuration for the fuel system second embodiment2′ of the invention comprising a direct injection system57as described inFIG.2. The fourth distribution block configuration284may be applied with a pulsed width modulation pump in at least one of the fuel system second embodiment of the invention2′ and the fuel system third embodiment of the invention2″.

As previously described in the description of the recirculating line solenoid220, at least one of the temperature sensor and the pressure sensor223monitor pressure and temperature conditions of the fuel within the system (2,2′,2″). As described with the recirculating line solenoid220, the at least one solenoid223controls the fuel flow volume based upon at least one of calculated temperature measurements and calculated pressure measurements. Alternatively, at least one flow control fitting, ‘second pill’,242may be in communication with the at least one return line23. As described with the recirculating line solenoid220, the flow control fitting242controls the fuel flow volume returning to the fuel tank4based upon at least one of calculated temperature measurements and calculated pressure measurements. A combination of at least one the recirculating line solenoid220, the at least one solenoid223, and the at least one flow control fitting242may be employed to control the fuel flow volume within the system (2,2′,2″).

In the configurations of the distribution block27illustrated inFIGS.12C,12D,12E,12F, the first embodiment of the distribution block275, and the second embodiment of the distribution block270, and any combination of the elements of the configurations as illustrated inFIGS.12C,12D,12E,12F, the first embodiment of the distribution block275, and the second embodiment of the distribution block270, the at least one supply line21is in removable communication with the ninth distribution block bore194, thru a fitting241, and the at least one return line23is in removable communication with the fourth distribution block bore187, thru a fitting241. Wherein fuel travels thru the at least one supply line21and into the ninth distribution block bore194. Wherein fuel travels from the fourth distribution block bore194and into the at least one return line23.

With respect toFIG.12G, a second embodiment of the solenoid in communication with the distribution block27,270is described. In this second embodiment of the solenoid220in communication with the distribution block27a bypass port269is illustrated. The bypass port269connects at least one of the first distribution block bore180, the third distribution block bore186, the fourth distribution block bore187, the fifth distribution block bore188, the second distribution block bore181, and the first member body bore channel201to at least one of the sixth distribution block bore190, the seventh distribution block bore191, the eighth distribution block bore193, the ninth distribution block bore194, the tenth distribution block bore195, and the second member body bore channel207. A solenoid channel294provides a fluid connection between the bypass port269and at least one of the first member first side170, the first member second side171, at least one side of the at least three sides172of the first member body174, the second member first side176, the second member second side177, and at least one side of the at least three sides172of the second member body178. A solenoid220in removable communication with the solenoid channel294at the at least one of the first member first side170, the first member second side171, at least one side of the at least three sides172of the first member body174, the second member first side176, the second member second side177, and at least one side of the at least three sides172of the second member body178. Alternatively, the solenoid220affixed to the solenoid channel294. A solenoid pin297, positioned in the solenoid channel294and into the bypass port269, wherein the solenoid pin297is removable from the bypass port269. When inserted in the bypass port269, the solenoid pin297provides for at least partial blocking of the flow of fuel between the first member168and the second member169. This provides for flow control of the fuel returning to the fuel tank4as described in the first embodiment of the solenoid in communication with the distribution block272.

In the configurations of the distribution block27illustrated inFIGS.12C,12D,12E,12F, and any combination of the elements of at least one of the first distribution block configuration279, the second distribution block configuration280, the third distribution block configuration282, and the fourth distribution block configuration284may be applied to at least one of the first embodiment of the distribution block275and the second embodiment of the distribution block270.

With attention toFIGS.13-17, the fuel rail30is further described. As illustrated inFIG.13, a perspective view of a fuel rail30, comprising the fuel rail first end32and the oppositely opposed fuel rail second end33, wherein the fuel rail first end32and the fuel rail second end33are separated by a fuel rail length34. The fuel rail30comprising a first elevation243and a second elevation244. The first elevation243comprising a first elevation first side247and an oppositely opposed first elevation second side249, wherein the first elevation first side247and the first elevation second side249extend between a first elevation first end250and a first elevation second end251. The combination of the first elevation first side247, the first elevation second side249, the first elevation first end250and the first elevation second end251provides for the first elevation243. The second elevation244comprising a second elevation first side252and an oppositely opposed second elevation second side248, wherein the second elevation first side252and the second elevation second side248extend between a second elevation first end253and a second elevation second end254. The combination of the second elevation first side252, the second elevation second side248, the second elevation first end253and the second elevation second end254provides for the second elevation244.

The first elevation second side249and the second elevation first side252are in fused communication along the fuel rail length34to comprise the fuel rail30. The first elevation243and the second elevation244extend the fuel rail length34. Alternatively, a; least one of the first elevation243and the second elevation244extends the fuel rail length34. The first elevation first side247comprises the fuel rail first side246. The second elevation second side248comprises the fuel rail second side245.

A first rail bore229extends thru the first elevation243along the fuel rail length34from the first elevation first end250to the first elevation second end251. A second rail bore228extends thru the second elevation244along the fuel rail length34from the second elevation first end253to the second elevation second end254.

At least one fuel injector cavity225is positioned along the fuel rail length34. Wherein the fuel injector cavity225extends from the fuel rail second side245to the fuel rail first side246. The at least one fuel injector cavity225is defined by an injector cavity second side opening255, which provides for access into the and through the fuel rail30from the fuel injector second side245to the fuel injector first side246. About an injector cavity second side opening cavity circumference256resides a retainer226.

As illustrated inFIG.14, a perspective view of a fuel rail in exploded communication with a fuel injector, the distribution block to fuel rail tube28is in removable communication with the fuel rail first end32and specifically the first rail bore229opening at the first elevation first end250, wherein fuel is provided to enter into the fuel rail30. The first rail bore229provides for fuel to enter into the fuel rail30. The first fuel rail bore229may provide for fuel to exit the fuel rail30. Alternatively, the first fuel rail bore229may provide for fuel to enter and exit the fuel rail30. A fuel rail plug239is in sealable communication with the fuel rail second end33and specifically the first rail bore229opening at the first elevation second end251. The fuel rail to distribution block tube35is in removable communication with the fuel rail second end33and specifically the second rail bore228opening at the second elevation second end254, wherein fuel is provided to travel in a fourth direction145exiting the fuel rail30. The second rail bore228provides for fuel to exit the fuel rail30. The second fuel rail bore may provide for fuel to enter the fuel rail30. Alternatively, the second fuel rail bore228may provide for fuel to enter and exit the fuel rail30. A fuel rail plug239is in sealable communication with the fuel rail second end33and specifically the second rail bore228opening at the second elevation first end253.

At least one of port injection fuel injector assembly31and a port injection fuel injector43is placed into the fuel injector cavity225. At least one of the injector cavity second side openings255provides for at least one threaded bore hole231about the injector cavity second side opening circumference256. Atleast one retainer226provides for atleast one u-shaped member bore hole230. The at least one retainer226extends a retainer thickness257, wherein the at least one u-shaped member bore hole230provides access from a retainer first surface259top a retainer second surface260. With the at least one of port injection fuel injector assembly31and a port injection fuel injector43is placed into the fuel injector cavity225, the retainer226is positioned about a port fuel injector head258. The retainer226is positioned such that at least one u-shaped member bore hole230is in alignment with at least one at least one threaded bore hole231. A fastening member227is inserted thru the u-shaped member bore hole230and into the at least one threaded bore hole231to provide for a pressure fit to maintain the position of the at least one of port injection fuel injector assembly31and a port injection fuel injector43.

As illustrated inFIG.15, a side view of a fuel rail, the second rail bore228is provided with a second rail bore center line232extending the length of the second elevation244. The first rail bore229is provided with a first rail bore center line233extending the length of the first elevation243. The first rail bore center line233and the second rail bore center line232maintain a substantially constant center line separation distance234(d) throughout the fuel rail length34. The substantially constant center line separation distance234(d) is further defined by a separation width286between the first rail bore center line233and second rail bore center line232, and a separation height288between the first rail bore center line233and second rail bore center line232.

As illustrated inFIGS.16and17, the second rail bore228intersects at least one fuel injector cavity along the fuel rail length34at a cavity/second bore intersection235. The cavity/second bore intersection235creates a cavity/second bore opening236wherein fuel travels from the fuel injector cavity225to the second rail bore228. The first rail bore229intersects at least one fuel injector cavity225along the fuel rail length34at a cavity/first bore intersection261. The cavity/first bore intersection261creates a cavity/first bore opening262wherein fuel travels from the first rail bore229to the fuel injector cavity225.

As illustrated inFIG.17, a cross-section of a fuel rail illustrating a port injection fuel injector assembly in communication with the fuel rail, at least one of at least one of port injection fuel injector assembly31and a port injection fuel injector43is placed into the fuel injector cavity225. A first injector seal263provides sealed communication with a cavity wall267between the fuel rail second side245and the second rail bore228. A second injector seal265provides sealed communication with the cavity wall267between the fuel rail first side246and the first rail bore229. The combination of at least one of the substantially constant center line separation distance234(d) throughout the fuel rail length34, the cavity/first bore opening262, cavity/second bore opening236, and the positioning of at least one of at least one of port injection fuel injector assembly31and a port injection fuel injector43within the fuel injector cavity225provides for a counter-clockwise rotation237of the fuel within the fuel injector cavity225from the cavity/first bore opening262to the cavity/second bore opening236. This counter-clockwise rotation237provides for a suctioning effect which draws the liquid fuel115out of the fuel injector cavity225. Further, the counter-clockwise rotation draws the vaporized fuel124behind the liquid fuel115. As previously illustrated, substantially constant center line separation distance234(d) is defined by the separation width286and the separation height288, wherein the relationship between the separation width286and the separation height288determines a correct substantially constant center line separation distance234(d) of the for drawing the vaporized fuel124behind the liquid fuel115. This ensures the system (2,2′,2″) contains liquid fuel115within the fuel infection cavity225and fuel rails30during ignition of the automobile. Thus, reducing the delay time to start the system (2,2′,2″) upon ignition, thus reducing the start time of the engine upon ignition as compared to the prior art which experiences delay due to vapor accumulation in the fuel injection cavity225and the fuel rails30.

Maintenance of constant system bore diameter290from the fuel pump100, to the service valves, lines (21,23,28,35,44,138,267,140), the distribution block (27,270,275), fuel rails30, and distribution block (27,270,275) to the fuel tank4is important to the system. The constant system bore diameter290determines a flow dynamic of fuel consumption. As a result, voids and cavities, which allow liquid to expand to vapor are substantially removed if not do not exist. The computer, during vehicle start up, sends a signal to deliver a fuel pump primer to purge the system.

An intended benefit of this invention is to provide an invention for a propane delivery system comprising a singular system for the distribution of liquid propane in in order to reduce the possibility of system failure and resulting EVAP emissions.

An intended benefit of the invention is to provide for the propane delivery system having a fuel pump which is accessible for maintenance without removing the fuel from the system and used to transfer fuel to and from remote tanks for servicing of remote tanks. It is observed tanks may be on a separate vehicle.

An intended benefit of the invention is to provide a propane fuel delivery system for distributing at least one of a proportional injection system and a direct injection system through a singular distribution assembly wherein the distribution assembly is equipped to monitor the temperature and/or pressure of the fuel advancing through the distribution assembly.

An intended benefit of the invention is to provide for a propane delivery system advancing liquid propane fuel and EVAP emissions of propane through the propane delivery system in order to reduce the start time of the engine upon ignition.

IL is recognized that at least one component of the fuel system first embodiment2is in conjunction with a; least one component of the fuel system second embodiment2′.

It is recognized that at least one component of the fuel system first embodiment2is in conjunction with at least one component of the fuel system third embodiment2″.

It is recognized that at least one component of the fuel system second embodiment2′ is in conjunction with at least one component of the fuel system third embodiment2″.

IL is understood that at least one component of at least one of the first pump first position135and the first pump second position135′ is in conjunction with external pump assembly137.

The foregoing is considered as illustrative only of the principles of the invention. Furthermore, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the invention to the exact construction and operation shown and described. While the preferred embodiment has been described, the details may be changed without departing from the invention, which is defined by the claims.