US2965087A - Fuel injection pump - Google Patents

Fuel injection pump Download PDF

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Publication number
US2965087A
US2965087A US711835A US71183558A US2965087A US 2965087 A US2965087 A US 2965087A US 711835 A US711835 A US 711835A US 71183558 A US71183558 A US 71183558A US 2965087 A US2965087 A US 2965087A
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Prior art keywords
pumping
fuel
drive shaft
distributing member
bore
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US711835A
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Waldemar O Bischoff
Hogeman Hans
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Ambac International Corp
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American Bosch Arma Corp
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M41/00—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor
    • F02M41/08—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor and pumping elements being combined
    • F02M41/10—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor and pumping elements being combined pump pistons acting as the distributor
    • F02M41/12—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor and pumping elements being combined pump pistons acting as the distributor the pistons rotating to act as the distributor
    • F02M41/123—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor and pumping elements being combined pump pistons acting as the distributor the pistons rotating to act as the distributor characterised by means for varying fuel delivery or injection timing
    • F02M41/125—Variably-timed valves controlling fuel passages
    • F02M41/126—Variably-timed valves controlling fuel passages valves being mechanically or electrically adjustable sleeves slidably mounted on rotary piston
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D1/00—Controlling fuel-injection pumps, e.g. of high pressure injection type
    • F02D1/16—Adjustment of injection timing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M39/00—Arrangements of fuel-injection apparatus with respect to engines; Pump drives adapted to such arrangements
    • F02M39/005—Arrangements of fuel feed-pumps with respect to fuel injection apparatus

Definitions

  • This invention relates to fuel injection apparatus for internal combustion engines and has particular reference to a new and improved form of fuel injection apparatus adapted to be connected to and driven by the engine and which apparatus is relatively simple, compact and economical in construction and eflicient in operation.
  • An object of the invention is to provide a new and improved fuel injection apparatus of the fuel distributor type wherein a single pumping and distributing member is utilized for pumping fuel and distributing it to a plurality of engine cylinders or combustion chambers, which apparatus is adapted for supplying fuel for small, high speed engines and which apparatus is relatively simple, compact and economical in construction and efficient in operation.
  • Another object is to provide an apparatus of the type set forth in which the timing of injection by the pump may be varied.
  • Another object is to provide a device of the type set forth in which the apparatus may be adapted for driving the pump at either engine speed or one half engine speed, as desired.
  • Another object is to provide a device of the type set forth having new and improved fuel supply pump means.
  • Another object is to provide a device of the type set forth wherein a governor may be associated directly with the pump and, if desired, may be utilized for operating the fuel supply pump.
  • Another object of the invention is to provide a new and improved fuel injection pump of the type set forth wherein the means for supplying fuel to the pumping chamber is constructed so that fuel is drawn into the pumping chamber during the complete suction stroke of the pumping member.
  • Fig. l is a longitudinal sectional view of a fuel injection apparatus embodying the invention.
  • Fig. 2 is a sectional view taken on line 2--2 of Fig. 1, looking in the direction of the arrows;
  • Fig. 3 is a sectional view taken on line 3--3 of Fig. 1, looking in the direction of the arrows;
  • Fig. 4 is a sectional view taken on line 4-4 of Fig. 1, looking in the direction of the arrows;
  • Fig. 5 is a diagrammatic view illustrating the operation of the filling ports for supplying fuel to the pumping chamber of the apparatus.
  • Fig. 6 is a perspective view illustrating the cam adjusting arrangement.
  • the apparatus shown embodying the invention comprises a casing 10 in which is journalled a drive shaft 11 in the bearings 12 and 13, and which drive shaft 11 is adapted to be operatively connected to the engine, whereby it is driven thereby.
  • the drive shaft 11 carries the cam 15, the number of tates Patent lobes on the cam depending upon the speed at which the pump is to be driven, for example, when the drive shaft 11 is connected to a four-stroke cycle engine and adapted to operate at half engine speed, the number of lobes on the cam is equal to the number of outlets in the pump and where the drive shaft 11 is adapted to be driven at engine speed, the cam is provided with one half the number of lobes as the pump has outlets.
  • the drive shaft 11 has means adjacent its end opposite spur gear 14 for connection to an engine.
  • the fuel injection pump includes the pump head 16, which fits into a recess 17 in the portion 10a of housing 10.
  • the pump head 16 has the bore 18 therethrough, the outer end of which is closed by a threaded plug or the like 19 and a plurality of outlets 20 are provided, one for each cylinder or combustion chamber adapted to receive fuel from the injection pump, and such outlets 20 are connected to bore 18 by ducts or passages 21.
  • the hydraulic head 16 is retained in position in the casing 10a by means of the flange member 22, which is secured to casing 10a by bolts or other suitable means.
  • the hydraulic head 16 is provided with a peripheral recess or groove 23 which, together with wall 10a of the housing, forms a sump to which fuel is supplied through pipe 24, which has its end 25 extending out of the casing 10 and is adapted to be connected to a suitable source of fuel such as a pipe connected to fuel supply pump 26.
  • Fuel is supplied to the bore 18 from sump 23 by means of inlet or fill ports or ducts 27 which may be of any suitable number, which may be one port for each engine cylinder or any multiple thereof. Hydraulic head 16 is also provided with spill sump 28.
  • the plunger or pumping and distributing member 29 is positioned in bore 18 in the hydraulic head 16 and member 29 is provided with the bore 30 in the end thereof adjacent plug 19 and, at its opposite end, member 29 is adapted to engage tappet 31 and to be held in engagement therewith by spring 32 which engages spring seat 33 and which spring seat 33 engages the head on the member 29 and retains it in engagement with tappet 31.
  • Tappet roller 34 is provided between cam 15 and tappet 31.
  • Member 29 is provided with radial ports 35, one of which is provided for each fill port means 27 or any multiple thereof for supplying fuel from said ducts 27 to the pumping chamber which is the upper end of bore 18 through bore 30 in the member 29 whereby bore 30 will be in commnication with fill ports 27 during substantially the complete suction stroke of member 29 as shown in Fig. 5.
  • member 29 Adjacent to ports 35, member 29 is also provided with a peripheral groove 36 which communicates with ports 35 and whereby during the latter portion of the suction stroke of member 29 groove 36 communicates with all of the fill ports 27. With this filling system the movement or stroke of member 29 may be much less than would otherwise be necessary thereby providing a simpler and more compact apparatus, which is accordingly more economical.
  • Fill ports 27 are so positioned that during the injection stroke of member 29, ports 27 do not communicate with ports 35.
  • groove 36 and port 36a is in communication with fill ports 27 and permits a spill back of fuel thereby preventing the Fuel pumped by the member 29 in bore 18 passes through port 36a and groove 36 to duct or passage 42, delivery valve 41 and port means 40 to distributing groove means 43 on the periphery of member 29, which distribut ing groove 43 is adapted to communicate with each of outlet passages 21 successively upon rotation of member 29 to thereby distribute fuel to each of outlets 20 in succession upon rotation of member 29.
  • the face gear 44 is provided adjacent the end of member 29 which engages the tappet 31, and face gear 44 is connected to member 29 by means of pin 45a or other suitable means.
  • Face gear 44 is adapted to be driven upon rotation of drive shaft 11 and spur gear 14 through the pinion 45, which is interposed between gears 14 and 44, and in those constructions embodying the governor as is shown in Fig. l, the pinion 45 may be mounted on the governor shaft 46 for simultaneously driving the governor shaft and simultaneously operating the fuel supply pump where the fuel supply pump is operatively connected to the end of the governor shaft, as in the construction shown in Fig. 1.
  • Supply pump 26 is preferably of the flexible impeller type such as shown in Patent No. 2,189,356 and is mounted on governor shaft 46 and is driven thereby.
  • the governor arrangement is a centrifugal type governor adapted to be actuated through the centrifugal force of governor weights 47, which are adapted to actuate governor sleeve 48 which is connected to governor lever 71 which is connected to linkage 49 whereby the position of fuel metering sleeve 39 may be adjusted through shaft 50 and eccentric 51.
  • the governor weights 47 are pivotally mounted on spider 47a and, as will be seen from Fig. 4, three such weights are preferably provided and member 47a is connected to governor shaft 46 by being keyed thereto through the fiat engaging edges 4712 which engage fiat edges on the opposite sides of shaft 46.
  • the timing of injection by the pump may be varied by varying the relationship of the cam 15 and member 29. This is accomplished by providing a cam 52 on operating lever shaft 53 with the cam 52 engaging the end 54 of cam shifting shaft 55, which is positioned in bore 56 in shaft 11 at the end thereof adjacent gear 14 which is keyed on hub 57 by means of key 58 whereby gear 14 will rotate upon rotation of drive shaft 11.
  • Drive shaft 11 has the slot or opening 58a therethrough, and the end 59 of shaft 55 extends into the slot or opening 58a and is connected to radial actuating members 69 which are connected to shifting member 61, and which member has the helical grooves or slots 62 in its outer surface adapted to receive helical splines or the like 63 on the inner surface of cam member 64 whereby the phase relation of lobes 65 and shaft 11 may be varied.
  • the cam 15 is so mounted that it cannot move axially and, therefore, axial motion of ring 61 causes cam 15 to rotate relative to shaft 11.
  • the spring 66 engages the side or edge surface of adjusting member 61 and opposes the movement of said member by cam 52.
  • the maximum speed of the pump is controlled through engagement of maximum speed lever 68a with maximum speed stop 68, which is adjustable.
  • the idle control is provided by spring 69, which is connected to idle adjusting screw 70 which adjusts the position of spring 69 relative to governor lever 71 and this spring 69 is adapted to engage lever 71 to control the engine idle fuel quantity.
  • Full load adjusting screw 72 is provided for controlling the desired full load fuel quantity and contains torque control screw 73, which is resiliently urged into engagement with lever 71 at full load position by spring 74 which allows torque control screw 73 to move slightly beyond full load position for providing the desired torque backup.
  • the screw 72 is screwed into place to retain the unit in full load fuel position and then the torque control screw 73 is adjusted by adjusting screw 73 to desired position for the desired torque backup.
  • the pump shown is adapted for one half engine speed operation. In order to adapt the pump to engine speed operation it is only necessary to change the cam 15 to a cam having one half the number of lobes as compared with the pump outlets and also to change the gears 14 and 45 to provide the proper speed ratios.
  • a fuel injection pump for an internal combustion engine, said pump being adapted to be operatively connected to an engine and driven thereby, said pump comprising a housing, a drive shaft journalled in said housing, said shaft having means adjacent one end for operative connection to an engine and said drive shaft having a spur gear adjacent the opposite end thereof, a cam carried by said drive shaft, a hydraulic head in said casing and having a bore in alignment with said cam, a plurality of outlets and a plurality of inlet ports communicating with said bore, a pumping and distributing member mounted for reciprocation and rotation in said bore, a tappet between said cam and said pumping and distributing member and adapted to engage said cam for effecting the pumping stroke thereof, a spring operatively connected to said pumping and distributing member for effecting the return or suction stroke of said pumping and distributing member, a face gear surrounding said pumping and distributing member and operatively connected thereto for effecting rotation thereof, a pinion between said face gear and said spur gear and meshing therewith for operatively
  • a fuel injection pump for an internal combustion engine said pump being adapted to be operatively connected to an engine and driven thereby, said pump comprising a housing, a drive shaft journalled in said housing, said shaft having means adjacent one end for operative connection to an engine and said drive shaft having a spur gear adjacent the opposite end thereof, a cam carried by said. drive. shaf a ydraulie h ad in. S
  • a fuel injection pump for supplying fuel to an internal combustion engine, said pump being adapted to be operatively connected to the engine and driven thereby, said pump comprising a casing, a two part drive shaft extending into said casing and adapted to be operatively connected to an engine, cam means carried by one part of said drive shaft, a hydraulic head having a bore aligned with said cam means, said hydraulic head having fill ports for supplying fuel to said bore and outlets for delivering fuel, said fill ports and outlets communicating with said bore, a pumping and distributing member in said bore in said hydraulic head and mounted for reciprocation and rotation in said bore in said head, gear means carried by the other part of said drive shaft and connecting said drive shaft and said pumping and distributing member for effecting rotation of said pumping and distributing member upon rotation of said drive shaft to thereby effect distribution of fuel, said pumping and distributing member being adapted to be actuated by said cam means, said pumping and distributing member having fuel distributing means for distributing fuel to each of said outlets successively upon rotation of said pumping
  • a fuel injection pump for supplying fuel to an internal combustion engine, said pump being adapted to be operatively connected to the engine and driven thereby, said pump comprising a casing, a two part drive shaft extending into said casing and adapted to be operatively connected to an engine, cam means carried by one part of said drive shaft, a hydraulic head having a bore aligned with said cam means, said hydraulic head having fill ports for supplying fuel to said bore and outlets for delivering fuel, said fill ports and outlets communicating with said bore, a pumping and distributing member in said bore in said hydraulic head and mounted for reciprocation and rotation in said bore in said head, gear means carried by the other part of said drive shaft and connecting said drive shaft and said pumping and distributing member for effecting rotation of said pumping and distributing member upon rotation of said drive shaft to thereby effect distribution of fuel, said pumping and distributing member being adapted to be actuated by said cam means, said pumping and distributing member having fuel distributing means for distributing fuel to each of said outlets successively upon rotation of said pumping
  • a fuel injection pump for supplying fuel to an internal combustion engine, said pump being adapted to be operatively connected to the engine and driven thereby said pump comprising a casing, a two part drive shaft extending into said casing and adapted to be operatively connected to an engine, cam means carried by one part of said drive shaft, a hydraulic head having a bore aligned with said cam means, said hydraulic head having fill ports for supplying fuel to said bore and outlets for delivering fuel, said fill ports and outlets communicating with said bore, a pumping and distributing member in said bore in said hydraulic head and mounted for reciprocation and rotation in said bore in said head, gear means carried by the other part of said drive shaft and connecting said drive shaft and said pumping and distributing member for effecting rotation of said pumping and distributing member upon rotation of said drive shaft to thereby effect distribution of fuel, said pumping and distributing member being adapted to be actuated by said cam means, said pumping and distributing member having fuel distributing means for distributing fuel to each of said outlets successively upon rotation of said pumping and
  • a fuel injection pump for supplying fuel to an internal combustion engine, said pump being adapted to be operatively connected to the engine and driven thereby, said pump comprising a casing, a two part drive shaft extending into said casing and adapted to be operatively connected to an engine, cam means carried by one part of said drive shaft, a hydraulic head having a bore aligned with said cam means, said hydraulic head having fill ports for supplying fuel to said bore and outlets for delivering fuel, said fill ports and outlets communicating with said bore, a pumping and distributing member in said bore in said hydraulic head and mounted for reciprocation and rotation in said bore in said head, gear means carried by the other part of said drive shaft and connecting said drive shaft and said pumping and distributing member for effecting rotation of said pumping and distributing member upon rotation of said drive shaft to thereby effect distribution of fuel, said pumping and distributing member being adapted to be actuated by said cam means, said pumping and distributing member having fuel distributing means for distributing fuel to each of said outlets successively upon rotation of said pumping
  • a fuel injection pump for supplying fuel to an internal combustion engine, said pump being adapted to be operatively connected to the engine and driven thereby, said pump comprising a casing, a two part drive shaft extending into said casing and adapted to be operatively connected to an engine, cam means carried by one part of said drive shaft, a hydraulic head having a bore aligned with said cam means, said hydraulic head having fill ports for supplying fuel to said bore and outlets for delivering fuel, said fill ports and outlets communicating with said bore, a pumping and distributing member in said bore in said hydraulic head and mounted for reciprocation and rotation in said bore in said head, gear means carried by the other part of said drive shaft and connecting said drive shaft and said pumping and distributing member for effecting rotation of said pumping and distributing member upon rotation of said drive shaft to thereby effect distribution of fuel, said pumping and distributing member being adapted to be actuated by said cam means, said pumping and distributing member having fuel distributing means for distributing fuel to each of said outlets successively upon rotation of said pumping
  • a fuel injection pump for an internal combustion engine, said pump being adapted to be operatively connected to an engine and driven thereby, said pump having a housing, a drive shaft journalled in said housing, said drive shaft having means adjacent one end for operative connection to an engine and having a gear adjacent the opposite end thereof, a cam carried by said drive shaft, a hydraulic head in said casing and having a bore in alignment with said cam, said housing having a plurality of outlet ports communicating with said bore and adapted to distribute fuel to the combustion chambers of an engine successively, a pumping and distributing member mounted for reciprocation and rotation in said bore, a tappet between said cam and said pumping and distributing member and adapted to engage said cam for effecting the pumping stroke thereof, a spring operatively connected to said pumping and distributing member for effecting the suction stroke thereof, a face gear surrounding said pumping and distributing member and operatively connected thereto for effecting rotation thereof, a governor shaft in spaced parallel relation with said drive shaft,
  • a centrifugal governor operatively connected to said governor shaft, a pinion on said governor shaft meshing with said face gear and said gear on said drive shaft and operatively connecting said gears, where upon rotation of said drive shaft rotation will be effected of said governor shaft and said pumping and distributing member, said hydraulic head having inlet port means communicating with said bore for supplying fuel thereto, said pumping and distributing member having a fuel passage and bypass port means communicating with said fuel passage, adjustable means for controlling the bypassing of fuel through said bypass port means to thereby control the fuel quantity delivered by said pump, and distributing means on said pumping and distributing member and communicating with said bore for supplying fuel to each of said outlets successively upon rotation of said pumping and distributing member.
  • a fuel injection pump for an internal combustion engine, said pump being adapted to be operatively connected to an engine and driven thereby, said pump having a housing, a drive shaft journalled in said housing, said drive shaft having means adjacent one end for operative connection to an engine and having a spur gear adjacent the opposite end thereof, a cam carried by said drive shaft, a hydraulic head in said casing and having a bore in alignment with said cam, said housing having a plurality of outlet ports communicating with said bore and adapted to distribute fuel to the combustion chambers of an engine successively, a pumping and distributing member mounted for reciprocation and rotation in said bore, a tappet between said cam and said pumping and distributing member and adapted to engage said cam for effecting the pumping stroke thereof, a spring operatively connected to said pumping and distributing member for effecting the suction stroke thereof, a face gear surrounding said pumping and distributing member and operatively connected thereto for effecting rotation thereof, a governor shaft in spaced parallel relation with said drive shaft, a centrifugal governor
  • port means communicating with said fuel passage, adjust-r able means for controlling the bypassing of fuel through said bypass port means to thereby control the fuel quantity delivered by said pump, and distributing means on said pumping and distributing member and communi-. eating with said bore for supplying fuel to each of said outlets successively upon rotation of said pumping and distributing member.
  • a fuel injection pump for an internal combustion engine, said pump being adapted to be operatively connected to an engine and driven thereby, said pump having a housing, a drive shaft journalled in said housing, said drive shaft having means adjacent one end for operative connection to an engine and having a gear adjacent the opposite end thereof, a cam carried by said drive shaft, a hydraulic head in said casing and having a bore in alignment with said cam, said housing having a plurality of outlet ports communicating with said bore and adapted to distribute fuel to the combustion chambers of an engine successively, a pumping and distributing member mounted for reciprocation and rotation in said bore, a tappet between said cam and said pumping and distributing member and adapted to engage said cam for effecting the pumping stroke thereof, a spring operatively connected to said pumping and distributing member for effecting the suction stroke thereof, a gear surrounding said pumping and distributing memberand operatively connected thereto.
  • a governor shaft in spaced parallel relation with said drive shaft, a centrifugal governor operatively connected to said governor shaft, a pinion on said governor shaft meshing with said gear and said gear on said drive shaft and operatively connecting said gears, where upon rotation of said drive shaft rotation Will be effected of said governor shaft and said pumping and distributing member, said hydraulic head having inlet port means communicating with said bore for supplying fuel thereto, said pumping and distributing member having a fuel passage and bypass port means communicating with said fuel passage, adjustable means for controlling the bypassing of fuel through said bypass port means to thereby control the fuel quantity delivered 10 by said pump, and distributing means on said pumping and distributing member and communicating with said bore for supplying fuel to each of said outlets successively upon rotation of said pumping and distributing member.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)

Description

FUEL' INJECTION PUMP Filed Jan. 29, 1958 4 Sheets-Sheet 1 I N VENTORS \A/ALDEMAE o. B\SCHOFF HANS HOGEMAN 6 ZATTOE/VEY.
1960 w. o. BISCHOFF ET AL 2,965,087
FUEL INJECTION PUMP 4 Sheets-Sheet 2 Filed Jan. 29, 1958 INVENTORS. WALDEMA'E o. IBlSCHOF-F' HANS HOGEMAN ATTORNEY.
Dec. 20, 1960 w. o. BISCHOFF ET AL 2,965,087
FUEL INJECTION PUMP Filed Jan. 29, 1958 4 Sheets-Sheet 3 PATH ore}; OF PLUNGER F'ILL 'FOETS.
CAMSHAFT DEGEEE$ iPLUNGEE ROTATION INVENTORS. \A/ALDEMAE O.BISCHOFF HANS HOG ELMAN ATTOP/VEK Dec. 20, 1960 w. o. BISCHOFF ETAL 2,965,087
FUEL. INJECTION PUMP Filed Jan. 29, 1958 4 Sheets-Sheet 4 INVENTORS. WAL D E MAE O- BISCHOFF HANS HOGEMAN A TTOPNEY.
FUEL INJECTION PUMP Waldemar O. Bischoif, Holyoke, and Hans Hogeman, Longmeadow, Mass., assignors to American Bosch Arma Corporation, a corporation of New York Filed Jan. 29, 1958, Ser. No. 711,835
10 Claims. (Cl. 123-140) This invention relates to fuel injection apparatus for internal combustion engines and has particular reference to a new and improved form of fuel injection apparatus adapted to be connected to and driven by the engine and which apparatus is relatively simple, compact and economical in construction and eflicient in operation.
An object of the invention is to provide a new and improved fuel injection apparatus of the fuel distributor type wherein a single pumping and distributing member is utilized for pumping fuel and distributing it to a plurality of engine cylinders or combustion chambers, which apparatus is adapted for supplying fuel for small, high speed engines and which apparatus is relatively simple, compact and economical in construction and efficient in operation.
Another object is to provide an apparatus of the type set forth in which the timing of injection by the pump may be varied.
Another object is to provide a device of the type set forth in which the apparatus may be adapted for driving the pump at either engine speed or one half engine speed, as desired.
Another object is to provide a device of the type set forth having new and improved fuel supply pump means.
Another object is to provide a device of the type set forth wherein a governor may be associated directly with the pump and, if desired, may be utilized for operating the fuel supply pump.
Another object of the invention is to provide a new and improved fuel injection pump of the type set forth wherein the means for supplying fuel to the pumping chamber is constructed so that fuel is drawn into the pumping chamber during the complete suction stroke of the pumping member.
Referring to the drawings:
Fig. l is a longitudinal sectional view of a fuel injection apparatus embodying the invention;
Fig. 2 is a sectional view taken on line 2--2 of Fig. 1, looking in the direction of the arrows;
Fig. 3 is a sectional view taken on line 3--3 of Fig. 1, looking in the direction of the arrows;
Fig. 4 is a sectional view taken on line 4-4 of Fig. 1, looking in the direction of the arrows;
Fig. 5 is a diagrammatic view illustrating the operation of the filling ports for supplying fuel to the pumping chamber of the apparatus; and
Fig. 6 is a perspective view illustrating the cam adjusting arrangement.
Referring more particularly to the drawings wherein similar reference characters designate corresponding parts throughout, the apparatus shown embodying the invention comprises a casing 10 in which is journalled a drive shaft 11 in the bearings 12 and 13, and which drive shaft 11 is adapted to be operatively connected to the engine, whereby it is driven thereby.
On the end of drive shaft 11 in casing 10 is mounted a spur gear 14.
The drive shaft 11 carries the cam 15, the number of tates Patent lobes on the cam depending upon the speed at which the pump is to be driven, for example, when the drive shaft 11 is connected to a four-stroke cycle engine and adapted to operate at half engine speed, the number of lobes on the cam is equal to the number of outlets in the pump and where the drive shaft 11 is adapted to be driven at engine speed, the cam is provided with one half the number of lobes as the pump has outlets. The drive shaft 11 has means adjacent its end opposite spur gear 14 for connection to an engine.
The fuel injection pump includes the pump head 16, which fits into a recess 17 in the portion 10a of housing 10.
The pump head 16 has the bore 18 therethrough, the outer end of which is closed by a threaded plug or the like 19 and a plurality of outlets 20 are provided, one for each cylinder or combustion chamber adapted to receive fuel from the injection pump, and such outlets 20 are connected to bore 18 by ducts or passages 21.
The hydraulic head 16 is retained in position in the casing 10a by means of the flange member 22, which is secured to casing 10a by bolts or other suitable means.
The hydraulic head 16 is provided with a peripheral recess or groove 23 which, together with wall 10a of the housing, forms a sump to which fuel is supplied through pipe 24, which has its end 25 extending out of the casing 10 and is adapted to be connected to a suitable source of fuel such as a pipe connected to fuel supply pump 26.
Fuel is supplied to the bore 18 from sump 23 by means of inlet or fill ports or ducts 27 which may be of any suitable number, which may be one port for each engine cylinder or any multiple thereof. Hydraulic head 16 is also provided with spill sump 28.
The plunger or pumping and distributing member 29 is positioned in bore 18 in the hydraulic head 16 and member 29 is provided with the bore 30 in the end thereof adjacent plug 19 and, at its opposite end, member 29 is adapted to engage tappet 31 and to be held in engagement therewith by spring 32 which engages spring seat 33 and which spring seat 33 engages the head on the member 29 and retains it in engagement with tappet 31. Tappet roller 34 is provided between cam 15 and tappet 31.
Member 29 is provided with radial ports 35, one of which is provided for each fill port means 27 or any multiple thereof for supplying fuel from said ducts 27 to the pumping chamber which is the upper end of bore 18 through bore 30 in the member 29 whereby bore 30 will be in commnication with fill ports 27 during substantially the complete suction stroke of member 29 as shown in Fig. 5. Adjacent to ports 35, member 29 is also provided with a peripheral groove 36 which communicates with ports 35 and whereby during the latter portion of the suction stroke of member 29 groove 36 communicates with all of the fill ports 27. With this filling system the movement or stroke of member 29 may be much less than would otherwise be necessary thereby providing a simpler and more compact apparatus, which is accordingly more economical.
Fill ports 27 are so positioned that during the injection stroke of member 29, ports 27 do not communicate with ports 35. During the early part of the injection stroke groove 36 and port 36a is in communication with fill ports 27 and permits a spill back of fuel thereby preventing the Fuel pumped by the member 29 in bore 18 passes through port 36a and groove 36 to duct or passage 42, delivery valve 41 and port means 40 to distributing groove means 43 on the periphery of member 29, which distribut ing groove 43 is adapted to communicate with each of outlet passages 21 successively upon rotation of member 29 to thereby distribute fuel to each of outlets 20 in succession upon rotation of member 29.
In order that the member 29 be rotated to align distributing port 43 with each of outlet ducts 21, the face gear 44 is provided adjacent the end of member 29 which engages the tappet 31, and face gear 44 is connected to member 29 by means of pin 45a or other suitable means.
Face gear 44 is adapted to be driven upon rotation of drive shaft 11 and spur gear 14 through the pinion 45, which is interposed between gears 14 and 44, and in those constructions embodying the governor as is shown in Fig. l, the pinion 45 may be mounted on the governor shaft 46 for simultaneously driving the governor shaft and simultaneously operating the fuel supply pump where the fuel supply pump is operatively connected to the end of the governor shaft, as in the construction shown in Fig. 1. Supply pump 26 is preferably of the flexible impeller type such as shown in Patent No. 2,189,356 and is mounted on governor shaft 46 and is driven thereby.
The governor arrangement is a centrifugal type governor adapted to be actuated through the centrifugal force of governor weights 47, which are adapted to actuate governor sleeve 48 which is connected to governor lever 71 which is connected to linkage 49 whereby the position of fuel metering sleeve 39 may be adjusted through shaft 50 and eccentric 51.
The governor weights 47 are pivotally mounted on spider 47a and, as will be seen from Fig. 4, three such weights are preferably provided and member 47a is connected to governor shaft 46 by being keyed thereto through the fiat engaging edges 4712 which engage fiat edges on the opposite sides of shaft 46.
The timing of injection by the pump may be varied by varying the relationship of the cam 15 and member 29. This is accomplished by providing a cam 52 on operating lever shaft 53 with the cam 52 engaging the end 54 of cam shifting shaft 55, which is positioned in bore 56 in shaft 11 at the end thereof adjacent gear 14 which is keyed on hub 57 by means of key 58 whereby gear 14 will rotate upon rotation of drive shaft 11.
Drive shaft 11 has the slot or opening 58a therethrough, and the end 59 of shaft 55 extends into the slot or opening 58a and is connected to radial actuating members 69 which are connected to shifting member 61, and which member has the helical grooves or slots 62 in its outer surface adapted to receive helical splines or the like 63 on the inner surface of cam member 64 whereby the phase relation of lobes 65 and shaft 11 may be varied. The cam 15 is so mounted that it cannot move axially and, therefore, axial motion of ring 61 causes cam 15 to rotate relative to shaft 11.
The spring 66 engages the side or edge surface of adjusting member 61 and opposes the movement of said member by cam 52.
It will be seen that any change in position of the operating lever and shaft 53 will simultaneously change the phase relation between adjusting member 61 and cam 64 to thereby change the phase relationship between the cam lobes 65 and the plunger 29 to vary the timing of injection by the pump.
The maximum speed of the pump is controlled through engagement of maximum speed lever 68a with maximum speed stop 68, which is adjustable.
The idle control is provided by spring 69, which is connected to idle adjusting screw 70 which adjusts the position of spring 69 relative to governor lever 71 and this spring 69 is adapted to engage lever 71 to control the engine idle fuel quantity.
Full load adjusting screw 72 is provided for controlling the desired full load fuel quantity and contains torque control screw 73, which is resiliently urged into engagement with lever 71 at full load position by spring 74 which allows torque control screw 73 to move slightly beyond full load position for providing the desired torque backup. The screw 72 is screwed into place to retain the unit in full load fuel position and then the torque control screw 73 is adjusted by adjusting screw 73 to desired position for the desired torque backup.
The pump shown is adapted for one half engine speed operation. In order to adapt the pump to engine speed operation it is only necessary to change the cam 15 to a cam having one half the number of lobes as compared with the pump outlets and also to change the gears 14 and 45 to provide the proper speed ratios.
From the foregoing it will be seen that we have provided new and improved means for obtaining all of the objects and advantages of the invention.
We claim:
1. In a fuel injection pump for an internal combustion engine, said pump being adapted to be operatively connected to an engine and driven thereby, said pump comprising a housing, a drive shaft journalled in said housing, said shaft having means adjacent one end for operative connection to an engine and said drive shaft having a spur gear adjacent the opposite end thereof, a cam carried by said drive shaft, a hydraulic head in said casing and having a bore in alignment with said cam, a plurality of outlets and a plurality of inlet ports communicating with said bore, a pumping and distributing member mounted for reciprocation and rotation in said bore, a tappet between said cam and said pumping and distributing member and adapted to engage said cam for effecting the pumping stroke thereof, a spring operatively connected to said pumping and distributing member for effecting the return or suction stroke of said pumping and distributing member, a face gear surrounding said pumping and distributing member and operatively connected thereto for effecting rotation thereof, a pinion between said face gear and said spur gear and meshing therewith for operatively connecting said gears, said hydraulic head having a sump communicating with said fill ports, said pumping and distributing member having a bore at the end thereof opposite said face gear, bypass port means communicating with said bore in said pumping and distributing member and adjustable means for controlling the bypassing of fuel through said bypass port means, fill port means in said pumping and distributing member and adapted to communicate with said fill ports in said hydraulic head for supplying fuel to said bore in said pumping and distributing member, said hydraulic head having a plurality of outlets and fuel distributing means in said pumping and distributing member for supplying fuel to each of said outlets successively upon rotation of said pumping and distributing member, said fill ports in said pumping and distributing member being intermediate said distributing means and said bypass port means and a peripheral groove in said pumping and distributing member and communicating with said fill ports whereby fuel will be supplied through said fill ports to said bore in said pumping and distributing member throughout substantially the entire suction stroke of said pumping and distributing member, and a governor shaft journalled in said housing parallel to said drive shaft, said governor shaft carrying said piinon and a centrifugal governor carried by said governor shaft and operatively connected to said spill port control means. i
2. In a fuel injection pump for an internal combustion engine, said pump being adapted to be operatively connected to an engine and driven thereby, said pump comprising a housing, a drive shaft journalled in said housing, said shaft having means adjacent one end for operative connection to an engine and said drive shaft having a spur gear adjacent the opposite end thereof, a cam carried by said. drive. shaf a ydraulie h ad in. S
casing and having a bore in alignment with said cam, a plurality of outlets and a plurality of inlet ports communicating with said bore, a pumping and distributing member mounted for reciprocation and rotation in said bore, a tappet between said cam and said pumping and distributing member and adapted to engage said cam for effecting the pumping stroke thereof, a spring operatively connected to said pumping and distributing member for effecting the return or suction stroke of said pumping and distributing member, a face gear surrounding said pumping and distributing member and operatively connected thereto for effecting rotation thereof, a pinion between said face gear and said spur gear and meshing therewith for operatively connecting said gears, said hydraulic head having a sump communicating with said fill ports, said pumping and distributing member having a bore at the end thereof opposite said face gear, bypass port means communicating with said bore in said pumping and distributing member and adjustable means for controlling the bypassing of fuel through said bypass port means, fill port means in said pumping and distributing member and adapted to communicate with said fill ports in said hydraulic head for supplying fuel to said bore in said pumping and distributing member, said hydraulic head having a plurality of outlets and fuel distributing means in said pumping and distributing member for supplying fuel to each of said outlets successively upon rotation of said pumping and distributing member, said fill ports in said pumping and distributing member being intermediate said distributing means and said bypass port means and a peripheral groove in said pumping and distributing member and communicating with said fill ports whereby fuel will be supplied through said fill ports to said bore in said pumping and distributing member throughout substantially the entire suction stroke of said pumping and distributing member, and a governor shaft journalled in said housing parallel to said drive shaft, said governor shaft carrying said pinion and a centrifugal governor carried by said governor shaft and operatively connected to said spill port control means, and a supply pump carried by said casing and operatively connected to said governor shaft and fuel passage means from said supply pump to said fill ports in said hydraulic head.
3. In a fuel injection pump for supplying fuel to an internal combustion engine, said pump being adapted to be operatively connected to the engine and driven thereby, said pump comprising a casing, a two part drive shaft extending into said casing and adapted to be operatively connected to an engine, cam means carried by one part of said drive shaft, a hydraulic head having a bore aligned with said cam means, said hydraulic head having fill ports for supplying fuel to said bore and outlets for delivering fuel, said fill ports and outlets communicating with said bore, a pumping and distributing member in said bore in said hydraulic head and mounted for reciprocation and rotation in said bore in said head, gear means carried by the other part of said drive shaft and connecting said drive shaft and said pumping and distributing member for effecting rotation of said pumping and distributing member upon rotation of said drive shaft to thereby effect distribution of fuel, said pumping and distributing member being adapted to be actuated by said cam means, said pumping and distributing member having fuel distributing means for distributing fuel to each of said outlets successively upon rotation of said pumping and distributing member and means for varying the relationship between said parts of said drive shaft to thereby vary the relationship between said cam means and said pumping and distributing member to vary the timing of injection by the pump.
4. In a fuel injection pump for supplying fuel to an internal combustion engine, said pump being adapted to be operatively connected to the engine and driven thereby, said pump comprising a casing, a two part drive shaft extending into said casing and adapted to be operatively connected to an engine, cam means carried by one part of said drive shaft, a hydraulic head having a bore aligned with said cam means, said hydraulic head having fill ports for supplying fuel to said bore and outlets for delivering fuel, said fill ports and outlets communicating with said bore, a pumping and distributing member in said bore in said hydraulic head and mounted for reciprocation and rotation in said bore in said head, gear means carried by the other part of said drive shaft and connecting said drive shaft and said pumping and distributing member for effecting rotation of said pumping and distributing member upon rotation of said drive shaft to thereby effect distribution of fuel, said pumping and distributing member being adapted to be actuated by said cam means, said pumping and distributing member having fuel distributing means for distributing fuel to each of said outlets successively upon rotation of said pumping and distributing member and means for varying the relationship between said parts of said drive shaft to thereby vary the relationship between said cam means and said pumping and distributing member to vary the timing of injection by the pump, said means comprising means for shifting the position of said cam means relative to said drive shaft.
5. In a fuel injection pump for supplying fuel to an internal combustion engine, said pump being adapted to be operatively connected to the engine and driven thereby said pump comprising a casing, a two part drive shaft extending into said casing and adapted to be operatively connected to an engine, cam means carried by one part of said drive shaft, a hydraulic head having a bore aligned with said cam means, said hydraulic head having fill ports for supplying fuel to said bore and outlets for delivering fuel, said fill ports and outlets communicating with said bore, a pumping and distributing member in said bore in said hydraulic head and mounted for reciprocation and rotation in said bore in said head, gear means carried by the other part of said drive shaft and connecting said drive shaft and said pumping and distributing member for effecting rotation of said pumping and distributing member upon rotation of said drive shaft to thereby effect distribution of fuel, said pumping and distributing member being adapted to be actuated by said cam means, said pumping and distributing member having fuel distributing means for distributing fuel to each of said outlets successively upon rotation of said pumping and distributing member and means for varying the relationshilp between said parts of said drive shaft to thereby vary the relationship between said cam means and said pumping and distributing member to vary the timing of injection by the pump, and means for rotating said pumping and distributing member and comprising a face gear operatively connected to said member and a pinion meshing with said gear means carried by said drive shaft and with said face gear.
6. In a fuel injection pump for supplying fuel to an internal combustion engine, said pump being adapted to be operatively connected to the engine and driven thereby, said pump comprising a casing, a two part drive shaft extending into said casing and adapted to be operatively connected to an engine, cam means carried by one part of said drive shaft, a hydraulic head having a bore aligned with said cam means, said hydraulic head having fill ports for supplying fuel to said bore and outlets for delivering fuel, said fill ports and outlets communicating with said bore, a pumping and distributing member in said bore in said hydraulic head and mounted for reciprocation and rotation in said bore in said head, gear means carried by the other part of said drive shaft and connecting said drive shaft and said pumping and distributing member for effecting rotation of said pumping and distributing member upon rotation of said drive shaft to thereby effect distribution of fuel, said pumping and distributing member being adapted to be actuated by said cam means, said pumping and distributing member having fuel distributing means for distributing fuel to each of said outlets successively upon rotation of said pumping and distributing member and means for varying the relationship between said parts of said drive shaft to thereby vary the relationship between said cam means and said pumping and distributing member to vary the timing of injection by the pump, and means for rotating said pumping and distributing member and comprising a face gear operatively connected to said member and a spur gear carried by said drive shaft and operatively connected to said face gear, a governor shaft journalled in said casing, a pinion carried by said shaft and meshing with said face gear and said spur gear and centrifugally actuated governor means carried by said governor shaft.
7. In a fuel injection pump for supplying fuel to an internal combustion engine, said pump being adapted to be operatively connected to the engine and driven thereby, said pump comprising a casing, a two part drive shaft extending into said casing and adapted to be operatively connected to an engine, cam means carried by one part of said drive shaft, a hydraulic head having a bore aligned with said cam means, said hydraulic head having fill ports for supplying fuel to said bore and outlets for delivering fuel, said fill ports and outlets communicating with said bore, a pumping and distributing member in said bore in said hydraulic head and mounted for reciprocation and rotation in said bore in said head, gear means carried by the other part of said drive shaft and connecting said drive shaft and said pumping and distributing member for effecting rotation of said pumping and distributing member upon rotation of said drive shaft to thereby effect distribution of fuel, said pumping and distributing member being adapted to be actuated by said cam means, said pumping and distributing member having fuel distributing means for distributing fuel to each of said outlets successively upon rotation of said pumping and distributing member and means for varying the relationship between said parts of said drive shaft to thereby vary the relationship between said cam means and said pumping and distributing member to vary the timing of injection by the pump, and means for rotating said pumping and distributing member and comprising a face gear operatively connected to said member and a spur gear carried by said drive shaft and operatively connected to said face gear, a governor shaft journalled in said casing, a pinion carried by said shaft and meshing with said face gear and said spur gear and centrifugally actuated governor means carried by said governor shaft, a supply pump carried by said casing and operatively connected to said governor shaft and adapted to be driven thereby and an adjusting member extending into the part of said drive shaft carrying said spur gear for varying the relationship between the parts of said drive shaft.
8. In a fuel injection pump for an internal combustion engine, said pump being adapted to be operatively connected to an engine and driven thereby, said pump having a housing, a drive shaft journalled in said housing, said drive shaft having means adjacent one end for operative connection to an engine and having a gear adjacent the opposite end thereof, a cam carried by said drive shaft, a hydraulic head in said casing and having a bore in alignment with said cam, said housing having a plurality of outlet ports communicating with said bore and adapted to distribute fuel to the combustion chambers of an engine successively, a pumping and distributing member mounted for reciprocation and rotation in said bore, a tappet between said cam and said pumping and distributing member and adapted to engage said cam for effecting the pumping stroke thereof, a spring operatively connected to said pumping and distributing member for effecting the suction stroke thereof, a face gear surrounding said pumping and distributing member and operatively connected thereto for effecting rotation thereof, a governor shaft in spaced parallel relation with said drive shaft,
a centrifugal governor operatively connected to said governor shaft, a pinion on said governor shaft meshing with said face gear and said gear on said drive shaft and operatively connecting said gears, where upon rotation of said drive shaft rotation will be effected of said governor shaft and said pumping and distributing member, said hydraulic head having inlet port means communicating with said bore for supplying fuel thereto, said pumping and distributing member having a fuel passage and bypass port means communicating with said fuel passage, adjustable means for controlling the bypassing of fuel through said bypass port means to thereby control the fuel quantity delivered by said pump, and distributing means on said pumping and distributing member and communicating with said bore for supplying fuel to each of said outlets successively upon rotation of said pumping and distributing member.
9. In a fuel injection pump for an internal combustion engine, said pump being adapted to be operatively connected to an engine and driven thereby, said pump having a housing, a drive shaft journalled in said housing, said drive shaft having means adjacent one end for operative connection to an engine and having a spur gear adjacent the opposite end thereof, a cam carried by said drive shaft, a hydraulic head in said casing and having a bore in alignment with said cam, said housing having a plurality of outlet ports communicating with said bore and adapted to distribute fuel to the combustion chambers of an engine successively, a pumping and distributing member mounted for reciprocation and rotation in said bore, a tappet between said cam and said pumping and distributing member and adapted to engage said cam for effecting the pumping stroke thereof, a spring operatively connected to said pumping and distributing member for effecting the suction stroke thereof, a face gear surrounding said pumping and distributing member and operatively connected thereto for effecting rotation thereof, a governor shaft in spaced parallel relation with said drive shaft, a centrifugal governor operatively connected to said governor shaft, a pinion on said governor shaft meshing with said face gear and said gear on said drive shaft and operatively connecting said gears, where upon rotation of said drive shaft rotation will be effected of said governor shaft and said pumping and distributing member, said hydraulic head having inlet port means communicating with said bore for supplying fuel thereto, said pumping and distributing member having a fuel passage and bypass. port means communicating with said fuel passage, adjust-r able means for controlling the bypassing of fuel through said bypass port means to thereby control the fuel quantity delivered by said pump, and distributing means on said pumping and distributing member and communi-. eating with said bore for supplying fuel to each of said outlets successively upon rotation of said pumping and distributing member.
10. In a fuel injection pump for an internal combustion engine, said pump being adapted to be operatively connected to an engine and driven thereby, said pump having a housing, a drive shaft journalled in said housing, said drive shaft having means adjacent one end for operative connection to an engine and having a gear adjacent the opposite end thereof, a cam carried by said drive shaft, a hydraulic head in said casing and having a bore in alignment with said cam, said housing having a plurality of outlet ports communicating with said bore and adapted to distribute fuel to the combustion chambers of an engine successively, a pumping and distributing member mounted for reciprocation and rotation in said bore, a tappet between said cam and said pumping and distributing member and adapted to engage said cam for effecting the pumping stroke thereof, a spring operatively connected to said pumping and distributing member for effecting the suction stroke thereof, a gear surrounding said pumping and distributing memberand operatively connected thereto. for effecting rotation thereof, a governor shaft in spaced parallel relation with said drive shaft, a centrifugal governor operatively connected to said governor shaft, a pinion on said governor shaft meshing with said gear and said gear on said drive shaft and operatively connecting said gears, where upon rotation of said drive shaft rotation Will be effected of said governor shaft and said pumping and distributing member, said hydraulic head having inlet port means communicating with said bore for supplying fuel thereto, said pumping and distributing member having a fuel passage and bypass port means communicating with said fuel passage, adjustable means for controlling the bypassing of fuel through said bypass port means to thereby control the fuel quantity delivered 10 by said pump, and distributing means on said pumping and distributing member and communicating with said bore for supplying fuel to each of said outlets successively upon rotation of said pumping and distributing member.
References Cited in the file of this patent UNITED STATES PATENTS 1,736,242 Attendu Nov. 19, 1929 2,465,784 Berlyn et al Mar. 29, 1949 2,544,561 Meyer Mar. 6, 1951 2,699,766 Fodor et al. Jan. 18, 1955 2,746,443 Meyer May 22, 1956
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Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3127841A (en) * 1959-04-07 1964-04-07 Mono Cam Ltd Fuel injection pumps
US3138103A (en) * 1961-12-26 1964-06-23 Allis Chalmers Mfg Co Fuel supplying mechanism
US3146716A (en) * 1961-12-26 1964-09-01 Allis Chalmers Mfg Co Fuel supplying mechanism
US3186396A (en) * 1963-11-05 1965-06-01 Bosch Arma Corp Apparatus for preventing reversal of fuel injection engines
US3311100A (en) * 1964-11-18 1967-03-28 Int Harvester Co Temperature compensated fuel injection pump
US3313282A (en) * 1964-12-21 1967-04-11 Allis Chalmers Mfg Co Fuel injection pump governor
US3319568A (en) * 1965-07-16 1967-05-16 Ford Motor Co Fuel injection pump assembly
US3320892A (en) * 1964-10-20 1967-05-23 Allis Chalmers Mfg Co Fuel injection system
DE1274850B (en) * 1961-09-11 1968-08-08 Bosch Arma Corp Device for the speed-dependent adjustment of the working time of an injection pump for internal combustion engines
US3440964A (en) * 1966-12-09 1969-04-29 Ambac Ind Fuel injection pump
US3712763A (en) * 1970-09-18 1973-01-23 Caterpillar Tractor Co Sleeve metering collar adjusting lever
US3848576A (en) * 1972-11-29 1974-11-19 Bosch Gmbh Robert Fuel injection pump for internal combustion engines
FR2288226A1 (en) * 1974-10-17 1976-05-14 Bosch Gmbh Robert FUEL INJECTION PUMP FOR INTERNAL COMBUSTION ENGINES
US4059369A (en) * 1975-01-28 1977-11-22 Robert Bosch G.M.B.H. Fuel injection pump
DE3049368A1 (en) * 1980-12-29 1982-07-29 Spica S.p.A., Livorno DISTRIBUTOR INJECTION PUMP FOR FUEL FEEDING OF COMBUSTION ENGINES
US4486155A (en) * 1981-06-06 1984-12-04 Spica S.P.A. Control of the pistons in injection pumps of internal-combustion engines
US4531492A (en) * 1984-03-27 1985-07-30 Caterpillar Tractor Co. Fuel injection timing and governor control apparatus
US4836170A (en) * 1986-10-31 1989-06-06 Robert Bosch Gmbh Fuel injection pump for an internal combustion engine
US20100170480A1 (en) * 2007-07-20 2010-07-08 Eberhard Maier High-pressure fuel pump with roller tappet

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Publication number Priority date Publication date Assignee Title
US1736242A (en) * 1924-01-25 1929-11-19 Andre C Attendu Fuel pump
US2465784A (en) * 1946-04-05 1949-03-29 American Bosch Corp Fuel supply apparatus for internalcombustion engines
US2544561A (en) * 1945-06-11 1951-03-06 American Bosch Corp Fuel injection pump
US2699766A (en) * 1946-11-21 1955-01-18 Micro Prec Inc Fuel injection pump
US2746443A (en) * 1953-02-20 1956-05-22 Texas Co Fuel injection pump

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1736242A (en) * 1924-01-25 1929-11-19 Andre C Attendu Fuel pump
US2544561A (en) * 1945-06-11 1951-03-06 American Bosch Corp Fuel injection pump
US2465784A (en) * 1946-04-05 1949-03-29 American Bosch Corp Fuel supply apparatus for internalcombustion engines
US2699766A (en) * 1946-11-21 1955-01-18 Micro Prec Inc Fuel injection pump
US2746443A (en) * 1953-02-20 1956-05-22 Texas Co Fuel injection pump

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3127841A (en) * 1959-04-07 1964-04-07 Mono Cam Ltd Fuel injection pumps
DE1274850B (en) * 1961-09-11 1968-08-08 Bosch Arma Corp Device for the speed-dependent adjustment of the working time of an injection pump for internal combustion engines
US3138103A (en) * 1961-12-26 1964-06-23 Allis Chalmers Mfg Co Fuel supplying mechanism
US3146716A (en) * 1961-12-26 1964-09-01 Allis Chalmers Mfg Co Fuel supplying mechanism
US3186396A (en) * 1963-11-05 1965-06-01 Bosch Arma Corp Apparatus for preventing reversal of fuel injection engines
US3320892A (en) * 1964-10-20 1967-05-23 Allis Chalmers Mfg Co Fuel injection system
US3311100A (en) * 1964-11-18 1967-03-28 Int Harvester Co Temperature compensated fuel injection pump
US3313282A (en) * 1964-12-21 1967-04-11 Allis Chalmers Mfg Co Fuel injection pump governor
US3319568A (en) * 1965-07-16 1967-05-16 Ford Motor Co Fuel injection pump assembly
US3440964A (en) * 1966-12-09 1969-04-29 Ambac Ind Fuel injection pump
US3712763A (en) * 1970-09-18 1973-01-23 Caterpillar Tractor Co Sleeve metering collar adjusting lever
US3848576A (en) * 1972-11-29 1974-11-19 Bosch Gmbh Robert Fuel injection pump for internal combustion engines
FR2288226A1 (en) * 1974-10-17 1976-05-14 Bosch Gmbh Robert FUEL INJECTION PUMP FOR INTERNAL COMBUSTION ENGINES
US4065236A (en) * 1974-10-17 1977-12-27 Robert Bosch Gmbh Fuel injection pump for an internal combustion engine
US4059369A (en) * 1975-01-28 1977-11-22 Robert Bosch G.M.B.H. Fuel injection pump
DE3049368A1 (en) * 1980-12-29 1982-07-29 Spica S.p.A., Livorno DISTRIBUTOR INJECTION PUMP FOR FUEL FEEDING OF COMBUSTION ENGINES
US4486155A (en) * 1981-06-06 1984-12-04 Spica S.P.A. Control of the pistons in injection pumps of internal-combustion engines
US4531492A (en) * 1984-03-27 1985-07-30 Caterpillar Tractor Co. Fuel injection timing and governor control apparatus
WO1985004445A1 (en) * 1984-03-27 1985-10-10 Caterpillar Tractor Co. Fuel injection timing and governor control apparatus
US4836170A (en) * 1986-10-31 1989-06-06 Robert Bosch Gmbh Fuel injection pump for an internal combustion engine
US20100170480A1 (en) * 2007-07-20 2010-07-08 Eberhard Maier High-pressure fuel pump with roller tappet

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