Abstract:
Exemplary embodiments can provide at least one of a system, machine, device, and manufacture that can comprise: a V-type water-cooled diesel engine comprising: a first cylinder and a second cylinder disposed in a V-shape; a plurality of injection pumps adapted to serve each respective cylinder; and a fuel governor adapted to control fuel from the injection pumps, the fuel governor disposed between the cylinders; wherein the governor is an electrical governor and disposed outside a crankcase that is located between the cylinders, and the plurality of injection pumps are mounted on a cover of the crankcase.

Description:
CROSS-REFERENCES TO RELATED APPLICATIONS 
     This application claims priority to China Patent Application 200920000178.0, filed 6 Jan. 2009. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       A wide variety of potential practical and useful embodiments will be more readily understood through the following detailed description of certain exemplary embodiments, with reference to the accompanying exemplary drawings in which: 
         FIG. 1  is a cross sectional view of an exemplary V-type water-cooled diesel engine; 
         FIG. 2  is a longitudinal sectional view of the V-type water-cooled diesel engine of  FIG. 1 ; 
         FIG. 3  is an enlarged partial view of  FIG. 2  which shows the structure of fuel governor mechanism; and 
         FIG. 4  is a perspective view of a fuel governor mechanism of another exemplary V-type water-cooled diesel engine. 
     
    
    
     DETAILED DESCRIPTION 
     Certain exemplary embodiments can provide a small and compact V-type water-cooled diesel engine. 
     Certain exemplary embodiments can provide a V-type water-cooled diesel engine having a left cylinder and a right cylinder disposed in a V shape. Injection pumps and a governor, which can control fuel from the injection pumps, can be disposed between the cylinders. The governor can be an electrical governor disposed outside a crankcase, which can be located between the cylinders. The injection pumps of the cylinders can be mounted on the crankcase cover. 
     Certain exemplary embodiments can provide a V-type water-cooled diesel engine in which the injection pumps of the cylinders controlled by one fuel governor mechanism. The electrical governor can control the opening of the fuel injection pumps of the cylinders by the fuel governor mechanism. 
     Certain exemplary embodiments can provide a V-type water-cooled diesel engine in which the fuel governor mechanism comprises an arm connected with opening of the injection pumps the cylinders. 
     Certain exemplary embodiments can provide a V-type water-cooled diesel engine in which the fuel governor mechanism comprises a spring, which can make the opening of the injection pumps bias to their closed and/or lowest fuel pumping position. 
     Certain exemplary embodiments can provide a V-type water-cooled diesel engine in which the fuel governor mechanism further comprises an adjustment unit connecting with the spring. The adjustment unit can have an end connecting the motor shaft of the electrical governor and the other end connecting the arm. 
     Certain exemplary embodiments can provide a V-type water-cooled diesel engine in which the adjustment unit comprises a rocker arm with its one end fixing the motor shaft, a pulling rod, and a ball stud. The other end of the rocker-arm can be rotationally engaged to the pulling rod via the ball stud. The other end of the pulling rod can be rotationally engaged to the arm. 
     Certain exemplary embodiments can provide a V-type water-cooled diesel engine in which the ball head of the ball stud can move in a groove of the rocker-arm and the other end of the ball stud can be attached on the pulling rod. The groove can have an open end. 
     Certain exemplary embodiments can provide a V-type water-cooled diesel engine in which the spring can be biased to the pulling rod and keep the feed ports of the pumps open at their closed and/or lowest fuel pumping position. 
     Certain exemplary embodiments can provide a V-type water-cooled diesel engine in which the pulling rod can be provided in a locating sleeve and can have a stop structure which prevents the pulling rod from rotating, thereby limiting its travel. 
     Accordingly, the fuel injection pumps and small sized electrical governor can be constructed on the crankcase cover, which can compact the crankcase cover of the V-type water-cooled diesel engine. 
     Furthermore, the electrical governor can control the injection pumps spontaneously via the governor mechanism since the injection pumps can share the same fuel governor mechanism. 
     Also, the feed ports of the injection pumps can be maintained in their closed and/or lowest fuel pumping and/or transmission position by the spring, which can ensure the safety of the engine. 
     Various embodiments of the V-type water-cooled diesel engine are now described with reference to the figures, where like reference numbers indicate identical or functionally similar elements. As used herein, the term “a” means “one or more than one”. 
       FIGS. 1 to 3  show an exemplary embodiment of a V-type water-cooled diesel engine. Referring to  FIG. 1 , the engine includes a left cylinder  1  and a right cylinder  2  disposed in a V shape. Pistons in the left cylinder  1  and the right cylinder  2  are connected to a crankshaft  3  by connecting rods  11  and  21  respectively. 
     As shown in  FIG. 2 , the crankshaft  3  can rotate in the crankcase via connecting rods  11  and  21  when the pistons reciprocate in left cylinder  1  and right cylinder  2  respectively, thus power can be output through the outputting end  31  of the crankshaft  3 . A starting flywheel  32 , a cooling fan  33 , and a water tank  34  are disposed in sequence along the longitudinal axis of crankshaft  3  on the opposite side of the outputting end  31  of the crankshaft  3 . 
     As shown in  FIG. 2 , injection pump  12  of left cylinder  1 , injection pump  22  of right cylinder  2 , and electrical governor  5  are arranged between left cylinder  1  and right cylinder  2 . To accommodate these parts, an open region  6  can be constructed on the crankcase with a crankcase cover  7  between the V shaped cylinders. The injection pumps  12  and  22  are disposed on the crankcase cover  7  and extended into the inside of the crankcase by a pump supporter  71  on the crankcase  7 . The electrical governor  5  can be disposed outside of the crankcase cover  7 . 
     Referring to  FIGS. 2 and 3 , the electrical governor  5  comprises a control unit  51 , a stepper motor  53  and a speed sensor  54 . The control unit  51  can control the movement of stepper motor  53  according to the crankshaft rotational speed signal as detected by the revolution speed sensor  54 . The stepper motor  53  is fixed outside the crankcase cover  7 . A motor shaft  52  is extended into the open region  6  of the crankcase through a hole  72  in the crankcase cover  7 . 
     As shown in  FIG. 4 , the injection pumps  12  and  22  share one fuel governor mechanism including a fuel governor arm  41  connecting with the feed ports of the injection pump  12  and  22 , a spring  42  and a governor unit  4  connecting the spring  42 . The fuel governor arm  41  is yoke-shaped and has two branch arms with their free ends respectively connecting the feed ports of the injection pumps  12  and  22 . The joint of the branch arms can be rotationally engaged to one end of the governor unit  4  by a rotate shaft  411 . The other end of the governor unit  4  connects with the motor shaft  52  of the stepper motor  53 , which extends into the crankcase. 
     The motor shaft  52  moves the fuel governor arm  41  by the governor unit  4  when the stepper motor  53  in operation. Then the fuel governor arm  41  controls the opening size of the feed ports of the connecting injection pump  12  and  22 . The governor unit  4  is retained in certain side by the spring  42  connecting so that the feed ports of the injection pumps  12  and  22  can be maintained in their closed and/or lowest fuel pumping and/or transmission position. 
     The fuel governor arm  41 , spring  42  and governor unit  4  of fuel governor mechanism are shown in  FIG. 4 . The governor unit  4  comprises a rocker-arm  44 , a pulling rod  45 , and a ball stud  46 . The rocker-arm  44  has one end fixed on the motor shaft  52  and the other end connecting the pulling rod  45  through the ball stud  46 . The other end of the pulling rod  45  can be rotationally engaged with rotating shaft  411  of fuel governor arm  41 . More specifically, the rotating shaft has one end fixed on fuel governor arm  41  and the other movably disposed in slot  451  of pulling rod  45 . 
     The ball stud  46  has its ball head  47  movably disposed in groove  48  of rocker-arm  44  and the other end fixed on pulling rod  45 . The groove may be open as in the  FIG. 4  or sealed on both ends. 
       FIG. 4  shows that spring  42  is a compressed spring which is twisted around pulling rod  45  with one end against the crankcase cover  7  (as the position  73  showed in the  FIG. 3 ) and the other end can bias flange  452  of the pulling rod  45 . The pulling rod  45  can bias to a side by spring  42 , thus the feed ports of the injection pumps  12  and  22  can be maintained in their closed and/or lowest fuel pumping and/or transmission position, which can prevent fuel use, economize on fuel use, and/or prevent excess engine speed during idling. 
     The pulling rod  45  is accommodated in a locating sleeve  49  to prevent its lateral motion and limit its movement along the direction of locating sleeve  49 . The pulling rod  45  also has a stop structure to prevent it from rotating. As shown in  FIG. 4 , pulling rod  45  has a semicircle flat  453 . Accordingly, locating sleeve  49  has a semicircle hole  491  which engaged with semicircle flat  453 . The semicircle  453  of pulling rod  45  can be inserted into semicircle hole  491  and is movable back and forth with a limited travel. Similarly, other structures such as stopper bolt (not shown in the figures) can be disposed to limit and control the rotation and travel of pulling rod  4 . 
     The fuel controlling process of the feed ports of the V-type water-cooled diesel engine will become apparent by consideration of the following description and accompanying drawings. 
     When the diesel engine is not in operation, the feed ports of the injection pumps  12  and  22  are biased in the fuel cutoff direction. 
     The electronic governor sends a signal to the sensor  54  to start the control unit  51  when the flywheel  32  and the crankshaft  3  are turned by a starting motor (not shown in figures). Then motor shaft  52  of stepper motor  53  is turned to rotate rocker-arm  44  to be engaged with motor shaft  52 . Thus, ball stud  45  in groove  48  is turned and transfers the force to the pulling rod  45  thereon. The pulling rod  45  can overcome the elasticity force of spring  42  and move along the direction of locating sleeve. The pulling rod  45  can move the feed ports that connect the branch arms of the fuel governor arm  41  and counterclockwise rotate around the center of the injection pumps  12  and  22  after moving the fuel governor arm  41  until the diesel engine turns into idle speed condition. The control unit  51  can make the diesel engine working in the variable condition through the feed ports pedals and corresponding potentiometer signal. 
     The description above is used in an exemplary sense, for example, the feed ports increase can be set clockwise and the decrease can be set count clockwise. 
     As for the structures in the embodiments of the V-type water-cooled diesel engine, injection pumps  12  and  22  and electrical governor  5  can be disposed on the same crankcase cover  7 , thereby compacting the crankcase cover  7 . 
     Furthermore, fuel from both injection pumps  12  and  22  can be controlled by one same fuel governor mechanism of electrical governor  5 . 
     In addition, feed ports of injection pumps  12  and  22  can remain in the closed and/or idle position because of spring  42 , thereby ensuring a safe system. 
     Certain exemplary embodiments also can be applicable for a V-type water-cooled diesel engine which has more than two cylinders. 
     Certain exemplary embodiments can provide a V-type water-cooled diesel engine that can have a simple and compact structure and can be applicable for powering equipment such as a small portable generator, tractor, mower, water pump, and/or oil pump. 
     Note 
     Still other substantially and specifically practical and useful embodiments will become readily apparent to those skilled in this art from reading the above-recited and/or herein-included detailed description and/or drawings of certain exemplary embodiments. It should be understood that numerous variations, modifications, and additional embodiments are possible, and accordingly, all such variations, modifications, and embodiments are to be regarded as being within the scope of this application. 
     Thus, regardless of the content of any portion (e.g., title, field, background, summary, description, abstract, drawing figure, etc.) of this application, unless clearly specified to the contrary, such as via explicit definition, assertion, or argument, with respect to any claim, whether of this application and/or any claim of any application claiming priority hereto, and whether originally presented or otherwise:
         there is no requirement for the inclusion of any particular described or illustrated characteristic, function, activity, or element, any particular sequence of activities, or any particular interrelationship of elements;   any elements can be integrated, segregated, and/or duplicated;   any activity can be repeated, any activity can be performed by multiple entities, and/or any activity can be performed in multiple jurisdictions; and   any activity or element can be specifically excluded, the sequence of activities can vary, and/or the interrelationship of elements can vary.       

     Moreover, when any number or range is described herein, unless clearly stated otherwise, that number or range is approximate. When any range is described herein, unless clearly stated otherwise, that range includes all values therein and all subranges therein. For example, if a range of 1 to 10 is described, that range includes all values therebetween, such as for example, 1.1, 2.5, 3.335, 5, 6.179, 8.9999, etc., and includes all subranges therebetween, such as for example, 1 to 3.65, 2.8 to 8.14, 1.93 to 9, etc. 
     When any claim element is followed by a drawing element number, that drawing element number is exemplary and non-limiting on claim scope. 
     Any information in any material (e.g., a United States patent, United States patent application, book, article, etc.) that has been incorporated by reference herein, is only incorporated by reference to the extent that no conflict exists between such information and the other statements and drawings set forth herein. In the event of such conflict, including a conflict that would render invalid any claim herein or seeking priority hereto, then any such conflicting information in such material is specifically not incorporated by reference herein. 
     Accordingly, every portion (e.g., title, field, background, summary, description, abstract, drawing figure, etc.) of this application, other than the claims themselves, is to be regarded as illustrative in nature, and not as restrictive.