US3791362A - Governor for controlling the fuel delivery of a fuel injection pump for an internal combustion engine - Google Patents

Governor for controlling the fuel delivery of a fuel injection pump for an internal combustion engine Download PDF

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Publication number
US3791362A
US3791362A US00317703A US3791362DA US3791362A US 3791362 A US3791362 A US 3791362A US 00317703 A US00317703 A US 00317703A US 3791362D A US3791362D A US 3791362DA US 3791362 A US3791362 A US 3791362A
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United States
Prior art keywords
lever
fuel injection
injection pump
secured
fulcrum
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US00317703A
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English (en)
Inventor
Y Nakamura
S Odashima
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Komatsu Ltd
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Komatsu Ltd
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    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2700/00—Mechanical control of speed or power of a single cylinder piston engine
    • F02D2700/02—Controlling by changing the air or fuel supply
    • F02D2700/0269—Controlling by changing the air or fuel supply for air compressing engines with compression ignition
    • F02D2700/0282—Control of fuel supply
    • F02D2700/0284—Control of fuel supply by acting on the fuel pump control element
    • F02D2700/0292—Control of fuel supply by acting on the fuel pump control element depending on the speed of a centrifugal governor

Definitions

  • ABSTRACT A governor for controlling the fuel delivery of a fuel injection pump for an internal combustion engine which has a control rack for controlling the fuel delivery of a fuel injection pump, a link pivotally connected at one end to one end of the control rack, a floating lever pivotally connected at one side thereof to the other end of the link, a start spring fixed at one end thereof to a housing and secured at the other end thereof to one side end of the floating lever, a guide lever pivotally secured at one end thereof to the housing by a first fulcrum and engaged through a first shaft at the intermediate thereof with the intermediate of the floating lever, pivotally mounted centrifugal weights pivotally secured to the drive shaft of the fuel injection pump, a shifter axially slidably engaged with the drive shaft and the centrifugal weights at one end thereof and pivotally secured at the intermediate thereof to the other
  • This invention relates to a fuel injection pump of an internal combustion engine, and more particularly to improvements of a governor for controlling the fuel delivery of a fuel injection pump for an internaljcombustion engine.
  • a control rack for increasing and decreasing the fuel delivery of a fuel injection pump is connected through a link to a floating lever at its end.
  • the one end of the floating level is pivotally secured to a housing of the fuel injection pump by a fulcrum, and a start spring is fixed at one end thereof to the housing and is also secured at the other end thereof to one side end of the floating lever, and a guide lever is pivotally secured at one end thereof to the housing by a fulcrum and is engaged through a shaft at the intermediate thereof with the intermediate of the floating lever.
  • the guide lever is also secured pivotally to the intermediate of a shifter through a shaft.
  • This shifter is axially slidably engaged with the end of a rotary drive shaft having flyweights at one end, and is contacted with the flyweights, by which the shifter is slidably pushed rearwardly.
  • the rear end of the shifter is contacted with one side of a regulator lever which is pivotally secured at the other end to the fulcrum to which the guide lever is pivotally secured.
  • a main spring is secured at one end thereof to the intermediate of the regulator lever, and a full load stopper is provided at the other end of the regulator lever.
  • the other end of the spring is secured to the end of a throttle lever, which is secured pivotally at the intermediate of the same side near the spring to the housing by a fulcrum and which is manually operated at the opposite side end to the spring.
  • the throttle lever when the engine is accelerated, that is, when the fuel delivery of the fuel injection pump is increased, the throttle lever is pivotally inclined at a predetermined angle counterclockwise. Therefore, the regulator lever is pivotally inclined clockwise by the spring, and the end of the regulator lever pushes the shifter toward the regulator lever.
  • This shifter also receives the force toward the drive shaft by the lever centrifugal of the centrifugal force of the flyweights provided at the rotary drive shaft. Consequently, the shifter moves toward the drive shaft until the tention of the spring balances with the centrifugal force of the flyweights.
  • the guide lever is pivotally inclined clockwise so that the floating lever is pivotally inclined counterclockwise through the shaft.
  • the control rack is pushed forwardly through the link so as to increase the fuel delivery of the fuel injection pump by proper amount in order to accelerate the engine properly.
  • the shifter also receives the force to abruptly move toward the drive shaft, but since the centrifugal force of the flyweights are not abruptly increased, it happens that the shifter is moved toward the regulator lever. More particularly, since the rotary speed of the rotary drive shaft is that corresponding to the position of the throttle lever before manually operated, the lever action force by the centrifugal force of the flyweights is small, and accordingly the shifter is moved toward the drive shaft until the regulator lever collides with the full load stopper. Therefore, the control rack is pushed to the position of maximum fuel injection.
  • the fuel of more than the required amount is injected to the fuel injection pump to the engine during several seconds while the shifter is moved to the proper position by the acceleration of the engine, that is, by the increase of the centrifugal force of the flyweights due to the increase of the rotary speed of the drive shaft.
  • This invention contemplates to eliminate the aforementioned disadvantages of the conventional governor of a fuel injection pump for an internal combustion engine and to provide a novel and improved governor for controlling the fuel delivery of a fuel injection pump for an internal combustion engine.
  • an object of the present invention to provide a governor for controlling the fuel delivery of a fuel injection pump for an internal combustion engine in which a control rack does not move abruptly when the throttle lever is quickly operated so as not to supply excessive fuel to the fuel injection pump.
  • a governor for controlling the fuel delivery of a fuel injection pump for an internal combustion engine having a control rack for controlling the fuel delivery of a fuel injection pump, a link pivotally connected atone end to one end of the control rack, a floating lever pivotally connected at one side thereof to the other.
  • FIG. 1 is a schematic view of the conventional governor used in a fuel injection pump for an internal combustion engine
  • FIG. 2 is a schematic view of one embodiment of the governor for controlling the fuel delivery of a fuel injcction pump for an internal combustion engine of the present invention.
  • FIG. 3 is a schematic view of another embodiment of the governor of the present invention.
  • FIG. 1 shows the conventional governor used in a fuel injection pump for an internal combustion engine.
  • a control rack 1 for increasing and decreasing the fuel delivery of a fuel injection pump (not shown) is connected through a link 2 to a floating lever 3 at its end.
  • the one end of the floating lever 3 is pivotally secured to a housing of the fuel injection pump by a fulcrum 4, and a start spring 5 is fixed at one end thereof to the housing and is also secured at the other end thereof to one side end of the floating lever 3, and a guide lever 6 is pivotally secured at one end thereof to the housing by a fulcrum and is engaged through a shaft 7 at the intermediate thereof with the intermediate of the floating lever 3.
  • the guide lever 6 is also secured pivotally to the intermediate of a shifter 9 through a shaft 8.
  • This shifter 9 is axially slidably engaged with the end of a rotary drive shaft 11 having flyweights at one end, and is contacted with the flyweights 10, by which the shifter 9 is slidably pushed rearwardly.
  • the rear end of the shifter 9 is contacted with one side of a regulator lever 12 which is pivotally secured at the other end to the fulcrum to which the guide lever 6 is pivotally secured.
  • a main spring 13 is secured at one end thereof to the intermediate of the regulator lever 12, and a full load stopper 14 is provided at the other end of the regulator lever 12.
  • the other end of the spring 13 is secured to the end of a throttle lever 15, which is secured pivotally at the intermediate ofthe same side near the spring 13 to the housing by a fulcrum and which is manually operated at the opposite side end to the spring 13.
  • the guide lever 6 is pivotally inclined clockwise so that the floating lever 3 is pivotally inclined counterclockwise through the shaft 7.
  • the control rack 1 is pushed leftwardly of the drawing through the link 2 so as to increase the fuel delivery of the fuel injection pump by proper amount in order to accelerate the engine properly.
  • FIG. 2 shows one embodiment of the governor for controlling the fuel delivery of a fuel injection pump for an internal combustion engine.
  • the governor of the present invention is so constructed, as shown in FIG. 2, that the fulcrum 4 of the floating lever 3 is made movable. That is, the movable fulcrum 4 is slidably engaged with the axially long hole 17a ofa cam 17 pivotally secured to a shaft 16. The end of the cam 17 is contacted with a stopper l8 urged by a spring 18a at one side and with the throttle lever 15 at the other side, and the cam 18 is affected by the main spring 13 clockwise of the drawing by the throttle lever 15 and by the stopper 18 counterclockwise by the spring 18a to be controlled.
  • the stopper l8, throttle lever 15, link 2, floating lever 3, guide lever 6, and cam 17 are so mounted with each other as shown in FIG. 2 when the throttle lever 15 is disposed to indicate that the engine is in no load and at minimum speed. That is, the cam 17 is disposed between the end of the stopper l8 mostly projected and the throttle lever 15, and is pushed by both.
  • control rack l is disposed at no load and minimum speed position, but the movable fulcrum 4 is assumed to be fixed at its position, and even if the shifter 9 is moved leftwardly of the drawing until the regulator lever 12 collides with the full load stopper 14, it is so disposed that the control rack 1 is not pushed over to a predetermined fuel injection position less than the maximum fuel injection position.
  • the shifter 9 moves leftwardly of the drawing until the regulator lever 12 is contacted with the full load stopper 14 as aforementioned. Therefore, the floating lever 3 is abruptly inclined through the guide lever 6 around the movable fulcrum 4 as a center so that the control ack 1 is abruptly pushed into the fuel injection pump so as to accelerate the engine. In this case, the movable fulcrum 4 becomes tentatively stationary center. Accordingly, the control rack 1 is not pushed over a predetermined value or position, and accordingly the fuel is not injected by maximum amount.
  • the shifter 9 is moved rightwardly until the force of the main spring 13 balances with the centrifugal force. At this time, since the cam 17 is not pushed by the throttle lever 15, it is inclined counterclockwise of the drawing by the inclination of the guide lever 6 and floating lever 3 upon rightward movement of the shifter 9 so that the movable fulcrum 4 slides in the long hole 17a toward the end of the cam 17.
  • a spring 19 tensioned weakly and adjustable in tension may be acted opposite to its inclination.
  • the control rack l is pushed into the fuel injection pump by the movement of the movable fulcrum 4 so as to increase the fuel injection.
  • the movable fulcrum 4 is stopped at the position determined by the maximum fuel injection required in full load operation.
  • the governor has an intermediate lever 20 pivotally secured to the housing by a fulcrum 21 and having a recess 22 at the intermediate, and a throttle lever 15 has a projection 23 provided corresponding to the position of the recess 22 of the intermediate lever 20 so that when the throttle lever 15 is at idling position the projection 23 is engaged with the recess 22 of the intermediate lever 20.
  • another link 24 is formed as shown in FIG.
  • a governor for controlling the fuel delivery of a fuel injection pump for an internal combustion engine having a control rack for controlling the fuel delivery of the fuel injection pump, a link pivotally connected at one end to one end of the control rack, a floating lever pivotally connected at one side thereof to the other end of the link, a start spring fixed at one end thereof to a housing of the fuel injection pump and secured at the other end thereof to one side end of the floating lever, a guide lever pivotally secured at one end thereof to the housing by a first fulcrum and engaged through a first shaft at the intermediate thereof with the intermediate of the floating lever, pivotally mounted centrifugal flyweights pivotally secured to the drive shaft of thefuel injection pump, a shifter axially slidably engaged with the drive shaft and the centrifugal flyweights at one end thereof and pivotally secured at the intermediate thereof to the other end of the guide lever, a regulator lever pivotally secured at one end thereof to the first fulcrum and slidably contacted at the other side with the other end of the shifter, a

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • High-Pressure Fuel Injection Pump Control (AREA)
US00317703A 1971-12-23 1972-12-21 Governor for controlling the fuel delivery of a fuel injection pump for an internal combustion engine Expired - Lifetime US3791362A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP46104891A JPS5146213B2 (enrdf_load_stackoverflow) 1971-12-23 1971-12-23

Publications (1)

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US3791362A true US3791362A (en) 1974-02-12

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US00317703A Expired - Lifetime US3791362A (en) 1971-12-23 1972-12-21 Governor for controlling the fuel delivery of a fuel injection pump for an internal combustion engine

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US (1) US3791362A (enrdf_load_stackoverflow)
JP (1) JPS5146213B2 (enrdf_load_stackoverflow)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2231853A1 (enrdf_load_stackoverflow) * 1973-05-30 1974-12-27 Nippon Denso Co
US3895619A (en) * 1972-12-29 1975-07-22 Cav Ltd Governors for fuel pumps
US4000728A (en) * 1974-08-15 1977-01-04 Diesel Kiki Co., Ltd. Fuel injection governor
US4109629A (en) * 1974-04-01 1978-08-29 C.A.V. Limited Fuel injection pumping apparatus
US4397277A (en) * 1980-11-11 1983-08-09 Diesel Kiki Co., Ltd. Centrifugal governor for internal combustion engines, having a function of releasing adaptation means
US20040204646A1 (en) * 2002-11-04 2004-10-14 V-Target Technologies Ltd. Intracorporeal-imaging head

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2349655C2 (de) * 1973-10-03 1984-05-17 Robert Bosch Gmbh, 7000 Stuttgart Drehzahlregler für Kraftstoffeinspritzpumpen von Brennkraftmaschinen

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2986291A (en) * 1957-07-09 1961-05-30 Allis Chalmers Mfg Co Fuel injection system
US3577968A (en) * 1968-10-17 1971-05-11 Bosch Gmbh Robert Centrifugal r.p.m. regulator for internal combustion engines
US3620199A (en) * 1969-01-08 1971-11-16 Bosch Gmbh Robert Contrifugal governor for the rpm control of internal combustion engines
US3659570A (en) * 1970-08-03 1972-05-02 Diesel Kiki Co Centrifugal governor for injection internal combustion engines
US3672343A (en) * 1969-10-31 1972-06-27 Bosch Gmbh Robert Centrifugal regulator system for fuel-injection combustion engines

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2986291A (en) * 1957-07-09 1961-05-30 Allis Chalmers Mfg Co Fuel injection system
US3577968A (en) * 1968-10-17 1971-05-11 Bosch Gmbh Robert Centrifugal r.p.m. regulator for internal combustion engines
US3620199A (en) * 1969-01-08 1971-11-16 Bosch Gmbh Robert Contrifugal governor for the rpm control of internal combustion engines
US3672343A (en) * 1969-10-31 1972-06-27 Bosch Gmbh Robert Centrifugal regulator system for fuel-injection combustion engines
US3659570A (en) * 1970-08-03 1972-05-02 Diesel Kiki Co Centrifugal governor for injection internal combustion engines

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3895619A (en) * 1972-12-29 1975-07-22 Cav Ltd Governors for fuel pumps
FR2231853A1 (enrdf_load_stackoverflow) * 1973-05-30 1974-12-27 Nippon Denso Co
US3973541A (en) * 1973-05-30 1976-08-10 Kabushiki Kaisha Komatsu Seisakusho Governor for use in fuel injection pump
US4109629A (en) * 1974-04-01 1978-08-29 C.A.V. Limited Fuel injection pumping apparatus
US4000728A (en) * 1974-08-15 1977-01-04 Diesel Kiki Co., Ltd. Fuel injection governor
US4397277A (en) * 1980-11-11 1983-08-09 Diesel Kiki Co., Ltd. Centrifugal governor for internal combustion engines, having a function of releasing adaptation means
US20040204646A1 (en) * 2002-11-04 2004-10-14 V-Target Technologies Ltd. Intracorporeal-imaging head

Also Published As

Publication number Publication date
JPS4868928A (enrdf_load_stackoverflow) 1973-09-19
JPS5146213B2 (enrdf_load_stackoverflow) 1976-12-08

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