Abstract:
An end housing for mounting on an engine block to support at least one engine accessory is provided. The end housing includes a mounting body with a first side attachable to the engine block and a second side to attach the at least one engine accessory. The mounting body includes: a ledge surface disposed in the first side and structured to align the first side with the engine block, a mounting perimeter defined by the second side of the mounting body, at least one lubrication pipe disposed within the mounting body, at least one cooling pipe disposed within the mounting body, and at least one accessory attachment surface defined by the second side of mounting body.

Description:
TECHNICAL FIELD 
       [0001]    The present disclosure relates generally to internal combustion engines. More specifically, the present disclosure relates to an end housing for an internal combustion engine. 
       BACKGROUND 
       [0002]    Internal combustion engines may have various engine accessories, such as: generators, power steering pumps, air conditioning compressors, engine coolant pumps, exhaust air pumps, condensers, and/or turbochargers. The engine accessories assist in the operation of the internal combustion engine. It has been a common practice to mount the engine accessories on a front block portion of the internal combustion engine. The engine accessories may be mounted on various brackets, which are adapted to house various sizes of the engine accessories. The position of the engine accessories may be varied based on different applications of the engine accessories. In addition to accessories and bracket structures to mount these accessories, many engines also requires space for routing coolant hoses, piping and hose brackets. 
         [0003]    U.S. Pat. No. 6,244,239 describes an integrated housing to mount all the basic engine auxiliaries and secondary chassis related engine accessories of a typical automotive engine. The integrated housing is mounted to a single surface of an engine block to provide the strength and rigidity required to carry the loads of the engine accessories. In addition, the integrated housing is mounted in a way to offer the most appropriate location of the engine accessories relative to each other. However, optimization of mounting spaces for the engine accessories mentioned in the above-mentioned patent creates a concern for mounting space for oil pipes and coolant pipes. 
       SUMMARY OF THE INVENTION 
       [0004]    The present disclosure relates to an end housing mounted on an engine block to support at least one engine accessory also mounted thereto. 
         [0005]    In accordance with the present disclosure, the end housing includes a mounting body with a first side attachable to the engine block and a second side attached to the at least one engine accessory. The mounting body includes: a ledge surface disposed in the first side and structured to align the first side with the engine block, a mounting perimeter defined by the second side of the mounting body, at least one lubrication pipe disposed within the mounting body, at least one cooling pipe disposed within the mounting body, and at least one accessory attachment surface defined by the second side of mounting body. The at least one accessory is mountable to the at least one accessory attachment surface. The at least one accessory is structured and arranged to fluidly connect to the accessory through the at least one lubrication pipe. Similarly, the at least one accessory is structured and arranged to fluidly connect to the accessory through the at least one cooling pipe. 
         [0006]    In accordance with the disclosure, the end housing further includes a plurality of engine accessories. The plurality of engine accessories do not extend beyond the mounting perimeter of the mounting body, due to the plurality of engine accessories mounted to the mounting body. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0007]      FIG. 1  illustrates a perspective view of an engine mounted with an end housing, in accordance with the concepts of the present disclosure; 
           [0008]      FIG. 2  illustrates a perspective view of a mounting body of the end housing of  FIG. 1 , in accordance with the concepts of the present disclosure; and 
           [0009]      FIG. 3  illustrates a perspective view of the mounting body of  FIG. 2 , in accordance with the concepts of the present disclosure. 
       
    
    
     DETAILED DESCRIPTION 
       [0010]    Referring to  FIG. 1 , there is shown an engine  100  mounted with an end housing  102 . The engine  100  may include an engine block  104 . The engine  100  may be coupled to the end housing  102 . The end housing  102  may be utilized with any engine, such as vehicle, marine, and/or stationary engines. The end housing  102  may be attached to the engine  100  at a single mounting surface. The preferable mounting surface that attaches the end housing  102  to the engine  100  may be a front face of the engine block  104 . However, without limiting the disclosure, the end housing  102  may alternatively be mounted to other surfaces of the engine  100 , or to more than one engine surface, dependent upon the design criteria. 
         [0011]    The shape and configuration of the end housing  102  is based on the engine  100 , to which the end housing  102  is to be mounted. For example, if the end housing  102  were utilized with a radial engine, the end housing  102  would be designed and configured differently than if the end housing  102  were to be mounted to a different engine configuration. It is contemplated that the design of the end housing  102  may vary along with the location of the engine accessories and still achieves the objective of the present disclosure. It therefore should be understood that the end housing  102  of  FIG. 1 , is merely for illustrative purposes only, in accordance with the present disclosure. 
         [0012]    The end housing  102  may be constructed of materials, such as cast iron or steel, forged steel or other suitable alternative materials that produce high durability and low noise during engine operations. In addition to noise characteristics, other factors, such as cost and weight, may be taken into account during a selection of the material. The end housing  102  may be manufactured by stamping, casting, welding, or other method that may provide a relatively stiff structure to the end housing  102 . 
         [0013]    Referring to  FIG. 2 , there is shown a mounting body  200  of the end housing  102  ( FIG. 1 ). The end housing  102  has a construction to mount all of the major engine accessories or components to the mounting body  200 . 
         [0014]    The mounting body  200  includes a first side  202 , a second side  204 , a lateral side  206 , a first coolant pipe  208 , a second coolant pipe  210 , at least one lubrication pipe  212 , and a plurality of holes (not shown). The second side  204  is shown in detail in  FIG. 3 . 
         [0015]    The first side  202  is attachable to the engine block  104  by a plurality of fasteners (not shown). The plurality of fasteners (not shown) extends through a perimeter portion of the first side  202  and is positioned away from the accessory mounting surfaces. Hence, the mounting body  200  is then fastened to the engine block  104  by the fasteners (not shown). Also, the mounting body  200  is sealed to the engine block  104  by an O-ring seal or a gasket. 
         [0016]    The first side  202  includes a first segment  214  and a second segment  216 . The first segment  214  includes a ledge surface  218  and a first accessory attachment surface  220 . The ledge surface  218  on the first segment  214  is provided to assist in the assembly of the mounting body  200  to matching machined components of the engine block  104 . The ledge surface  218  acts as an alignment feature, thereby eliminating the need for dowels, alignment pins, or other alignment tools. The first accessory attachment surface  220  is disposed in the first segment  214 , to allow attachment of a turbocharger or other engine accessory onto the engine  100 . Since, the turbocharger (not shown) does not have a liquid interface; hence the turbocharger (not shown) is bolted or fastened onto the first accessory attachment surface  220 . 
         [0017]    The first side  202  may include a groove (not shown), to accommodate a single O-ring seal or multiple O-ring seals. When the first side  202  is bolted to the engine block  104 , the O-ring seal provides a fluid-tight seal of the first side  202  to the engine block  104  and an oil pan (not shown). The groove (not shown) may also accommodate a single gasket seal, multiple gasket seals, or other similar seals known in the art. It may be contemplated that the first segment  214  and the second segment  216  may be sealed independently, when bolted to the engine block  104 . 
         [0018]    The mounting body  200  is attached to the engine block  104  by bolts, or the like, that are fitted in the plurality of holes (not shown) along a surface of the first side  202 , which is attached to the engine block  104 . 
         [0019]    Referring to  FIG. 3 , there is shown the second side  204  of the mounting body  200 . The second side  204  includes a mounting perimeter  300 , a first portion  302  and a second portion  304 . The mounting perimeter  300  is disposed in an outer boundary of the second side  204 . The first portion  302  of the mounting perimeter  300  includes a second accessory attachment surface  306 . The second accessory attachment surface  306  is provided for attachment of at least one intercooler (not shown) or other engine accessory. Since, the intercooler (not shown) does not have a liquid interface, hence the intercooler (not shown) is bolted or fastened onto the second accessory attachment surface  306 . Further, the second portion  304  includes a third accessory attachment surface  308  and a fourth accessory attachment surface  310 . The third accessory attachment surface  308  accommodates a coolant pump (not shown). The coolant pump (not shown) requires liquid interface and hence, the coolant pump (not shown) is equipped with the sealant or the gasket to provide a liquid-tight sealing with the third accessory attachment surface  308 . The coolant pump (not shown) includes mounting plates, which are then fastened onto the third accessory attachment surface  308 . The fourth accessory attachment surface  310  is provided to accommodate an oil pump (not shown). The oil pump (not shown) requires liquid interface and hence, the oil pump (not shown) is equipped with the sealant or the gasket to provide a liquid-tight sealing with the fourth accessory attachment surface  310 . The oil pump (not shown) includes mounting plates, which are then fastened onto the fourth accessory attachment surface  310 . 
         [0020]    In an embodiment, the engine accessories are mounted at the first portion  302  and the second portion  304  of the second side  204  in a way, such that the engine accessories are confined to the plane of the mounting perimeter  300 . 
         [0021]    The first side  202  and the second side  204  define the lateral side  206  of the mounting body  200 . The lateral side  206  may define a first coolant port  312  and a second coolant port  314 . Similarly, the second side  204  may define an oil port  316 . The first coolant port  312  and the second coolant port  314  allow entry of the coolant in the end housing  102 . The first coolant port  312  and the second coolant port  314 , respectively, are in fluid communication with the first coolant pipe  208  and the second coolant pipe  210 . Similarly, the oil port  316  on the lateral side  206  is in fluid communication with the lubrication pipe  212 . The first coolant pipe  208  and the second coolant pipe  210  are positioned at an inclination, such that, the coolant always drains out of the first coolant pipe  208  and the second coolant pipe  210 . Hence, in cold conditions, when the engine  100  is not operational, the damage to the first coolant pipe  208  and the second coolant pipe  210  due to freezing of the coolant, is avoided. Further, each of the first coolant pipe  208  and the second coolant pipe  210  may include a plurality of freeze plugs  222 . During the manufacturing of the first coolant pipe  208  and the second coolant pipe  210 , the plurality of freeze plugs  222  are used to hold the first coolant pipe  208  and the second coolant pipe  210  in place. 
         [0022]    It is envisioned that given the number of options that are offered with a particular machine, it may not be practical to mount all the engine accessories to the mounting body  200 . In such a case, a predetermined number of engine accessories will be mounted to the mounting body  200 . It should be understood that there may be a variation in location and number of engine accessories to be mounted on the mounting body  200 . The engine accessories may include accessories as is customary, such as a vacuum pump, a fuel injection pump, an oil pump, a cam drive, a coolant pump, a cooler, a turbocharger and/or other engine accessories known to those having ordinary skill in the art. 
       INDUSTRIAL APPLICABILITY 
       [0023]    In operation, the mounting body  200  is equipped with a sealant or a gasket and thereby, prepared for mounting to the engine block  104 . The mounting body  200  is then fastened to the engine block  104 . The mounting body  200  includes the attachment surfaces for all the bolted-on-engine accessories. The arrangement and layout of the attachment surfaces in the mounting body  200  allows for the accommodation of the necessary components, such as the coolant pump, the oil pump, the turbocharger, the intercooler, and/or the like. The engine accessories, such as the coolant pump (not shown) and the oil pump (not shown), require liquid interface. Hence, the coolant pump (not shown) and the oil pump (not shown) are equipped with the sealant or the gasket. Thereafter, the coolant pump (not shown) and the oil pump (not shown), respectively, are bolted-on to third accessory attachment surface  308  and the fourth accessory attachment surface  310 . The engine accessories, such as the turbocharger (not shown) and the intercooler (not shown) do not require liquid interface. Hence, the turbocharger (not shown) and the intercooler (not shown), respectively, are bolted-on to the first accessory attachment surface  220  and the second accessory attachment surface  306 . The arrangement of the above mentioned components in the disclosed end housing  102  provides a solution for space constraints for attachment of the first coolant pipe  208 , the second coolant pipe  210 , and the lubrication pipe  212 . The disclosed end housing  102  includes the first coolant pipe  208  and the second coolant pipe  210 . The first coolant pipe  208  and the second coolant pipe  210  may serve as inlet pipes to the coolant pump (not shown), respectively, via the first coolant port  312  and the second coolant port  314 . Similarly, the end housing  102  includes the lubrication pipe  212 , which serves as the inlet pipe for the oil pump (not shown), via the oil port  316 . 
         [0024]    Hence, the disclosed end housing  102  provides an advantage of housing the necessary engine accessories along with accommodation of the first coolant pipe  208 , the second coolant pipe  210 , and the lubrication pipe  212 . In addition, the end housing  102  is equipped with different attachment surfaces to mount the engine accessories in a way, such that the engine accessories are confined to the plane of the mounting perimeter  300 . This is an advantage over conventional designs, which include individual drive accessories typically mounted directly to a surface of the engine, and coolant pipes and oil pipes mounted externally to the engine. Thus, the disclosed design of the end housing  102  eliminates the brackets provided for attachment of the engine accessories. The disclosed end housing  102  also eliminates the use of external coolant pipes and oil pipes in space constrained housing designs, by integrating the first coolant pipe  208 , the second coolant pipe  210 , and the lubrication pipe  212  into the end housing  102 . The end housing  102  may be designed so that all the engine accessories may be preassembled as a total package that can be shipped, mated, and fastened to the engine as a single package. Further, the end housing  102  is designed to minimize the number of manufacturing machinery operations, tooling locations, minimization of material cost, and minimization of manufacturing cost. 
         [0025]    It should be understood that the above description is intended for illustrative purposes only and is not intended to limit the scope of the present disclosure in any way. Thus, those skilled in the art will appreciate that other aspects of the disclosure can be obtained from a study of the drawings, the disclosure, and the appended claim.