US3906916A - Fuel injection apparatus for internal combustion engines - Google Patents

Fuel injection apparatus for internal combustion engines Download PDF

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Publication number
US3906916A
US3906916A US309009A US30900972A US3906916A US 3906916 A US3906916 A US 3906916A US 309009 A US309009 A US 309009A US 30900972 A US30900972 A US 30900972A US 3906916 A US3906916 A US 3906916A
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United States
Prior art keywords
fuel
governor
pump
fuel injection
channel
Prior art date
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
US309009A
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English (en)
Inventor
Helmut Laufer
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Robert Bosch GmbH
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Robert Bosch GmbH
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Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
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Publication of US3906916A publication Critical patent/US3906916A/en
Anticipated expiration legal-status Critical
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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
    • 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
    • F02M41/128—Varying injection timing by angular adjustment of the face-cam or the rollers support

Definitions

  • This invention relates to a fuel injection apparatus for internal combustion engines and is of the type that has a fuel injection pump in which the injected fuel quantities are altered by changing the terminal moment of fuel delivery during each pressure stroke of the pump piston.
  • the fuel injection apparatus is coupled to a fuel supply pump, the delivery pressure of which affects, in an rpm-dependent manner, a hydraulic setting device which serves for the adjustment of the moment of injection.
  • the fuel injection apparatus further includes an rpm regulator, the governor member of which serves for the alteration of the injected fuel quantities.
  • the moment of delivery start of the fuel injection pump determining the moment of injection is constant. Stated differently, the moment the injection starts during each pressure stroke of the fuel injection pump does not vary as the injected fuel quantities change. Some engines, however, require that for small injected fuel quantities (partial load conditions) the injection begin at a later moment to cause a delay in the starting moment of injection of the fuel injection pump.
  • the fuel supply pump from the pressure side of the fuel supply pump there extends a channel which is controlled by the governor of the rpm regulator in such a manner that a variable fuel quantity is discharged from the pressure side of the fuel supply pump; in this manner the output pressure of the fuel supply pump is variable.
  • FIG. 1 is a sectional view of the fuel injection apparatus incorporating the preferred embodiment and FIG. 2 is a sectional view of some components taken along line lIIl of FIG. 1.
  • FIG. 1 in a housing 1 of a fuel injection pump serving a multicylinder internal combustion engine (not shown) there is supported a drive shaft 2 coupled with a cam disc 3 which carries as many camming protrusions 4 as there are cylinders in the engine.
  • the track of the cam disc 3 is engaged by rollers, not shown, which are held in a ring 6.
  • the latter is inserted into the pump housing 1 and is rotatable about the axis of the shaft 2 by means of a pin 7 extending into the ring 6.
  • a fuel pumping and distributing member 8 has, at its side adjacent its drive means, a collar 9 which is coupled with the cam disc 3 by means of a pin 10.
  • the pumping and distributing member 8 is.slidably situated in a cylinder sleeve 17 which is fixedly inserted into the pump block 15. The latter is closed at the top by a threaded cap 19 which presses a valve seat body 20 against the edge face of the cylinder sleeve 17.
  • a movable valve member 21 which, in its closed position, is pressed against the valve seat body 20 by means of a spring 22 seated in a cavity of the closure cap 19.
  • a rotary positive displacement pump 24 which serves as a fuel supply pump and which delivers fuel directly into the inner chamber 26 formed in the housing 1.
  • a channel 27 which leads to an inlet channel 28 in the cylinder sleeve 17.
  • the inlet channel 28 cooperates with longitudinal grooves 29 provided in the lateral face of a terminal portion of the pumping and distributing member 8.
  • the longitudinal grooves 29 communicate with a pump work chamber 30 controlled by the pressure valve 20, 21.
  • an axial channel 38 which extends from the pump work chamber 30 to a transversal channel 39.
  • the mouths of the transversal channel 39 in the lateral face of the pumping and distributing member 8 cooperate with a control sleeve 41 which is axially displaceable on the pumping and distributing member 8.
  • a control sleeve 41 which is axially displaceable on the pumping and distributing member 8.
  • the pin 44 is disposed in an eccentric manner on the radial face of a shaft 45 which is supported in the pump housing 1 and which serves for the setting of the full load fuel quantities and for a fuel shut-off.
  • the other arm 43 of the two-arm lever 42, 43 is engaged by the spherical terminus of a governor member 47 of an rpm regulator which is slidable on a regulator shaft 48 fixedly attached to the housing 1.
  • a spur gear 49 which meshes with a spur gear 50 keyed to the pump drive shaft 2.
  • the spur gear 49 there are fixedly connected sheet metal pockets 51 in which there are supported centrifugal weights 52. Each of the latter engages the governor member 47 by means of an arm 53.
  • the arm 43 of the two-arm lever 42, 43 is exposed to the force of a compression spring 54 and a tension spring 55 which serve as regulator springs.
  • the compression spring 54 engages directly the lever arm 43 and is supported by a flaring pin 56.
  • Into the pin 56 there is hooked one end of the tension spring 55, the other end of which is in engagement with a pin 57.
  • the latter is affixed to a setting lever 58 which, for the purpose of adjusting the rpm to be regulated, is operable from the outside of the housing 1.
  • the governor member 47 has radial openings 60 which cooperate with an annular groove 61 provided in the lateral face of the regulator shaft 48.
  • the annular groove 61 is in continuous communication with a longitudinal bore 62 which opens into a transversal bore 63, both provided in the regulator shaft 48.
  • the bore 63 is connected, by means of an oblique bore 64, with an inlet bore 65 which joins, in a manner not shown, the suction side of the fuel supply pump 24.
  • the pin 7 extends with its terminus projecting from the housing 1, into a cylindrical joint 66 which is rotatably arranged in a piston 67 of a hydraulic setting mechanism, the housing 68 of which adjoins the housing 1 of the fuel injection pump (FIG. 1).
  • the piston 67 is exposed to the pressure prevailing in the inner chamber 26 of the housing 1 through a channel 69.
  • the other terminal face of the piston 67 is engaged by a spring 70.
  • the last-named terminal face of the piston 67 is in communication with the intake (low pressure) side of the fuel supply pump 24 through a channel 71.
  • fuel is delivered from the pump work chamber 30 through the open valve 20, 21, the channels 31 and 32 into the annular groove 33 and therefrom through the distributor groove 34 to one of the outlet channels 35 and then to the associated outlet coupling 36. Therefrom the fuel is admitted to the individual fuel injection nozzles of the internal combustion engine.
  • the fuel supply pump 24 supplies fuel into the inner chamber 26 of the fuel injection pump at an rpmdependent pressure.
  • the pressurized fuel exerts a force on the piston 67 of the hydraulic setting mechanism and thereby angularly adjusts in an rpm-dependent manner the ring 6 through the pin 7.
  • the angular position of the ring 6 determines the beginning of injection start of the fuel injection pump.
  • the centrifugal weights 52 of the centrifugal regulator swing outwardly and displace the governor member 47 upwardly against the force of the regulator springs 54, 55.
  • the spring 54 which serves for the regulation of the idling rpm is compressed and thereafter the spring 55 serving for the regulation of the operational rpm is tensioned.
  • a fuel injection apparatus serving an internal combustion engine, said apparatus being of the known type that has (a) a fuel injection pump delivering fuel quantities to said engine for injection, (b) an rpm regulator having a governor member, (c) means connecting said governor member to said fuel injection pump for varying the terminal moment of injection to vary said fuel quantities, (d) a fuel supply pump connected to said fuel injection pump to supply the latter with fuel, the output pressure of said fuel supply pump being a function of the engine rpm and (e) a hydraulic setting mechanism connected to said fuel injection pump for varying the moment of injection in response to a change in said output pressure, the improvement comprising:
  • a fuel injection apparatus serving an internal combustion engine, said apparatus being of the known type that has (a) a fuel injection pump delivering fuel quantities to said engine for injection, (b) an rpm regulator having a governor member, (c) means connecting said governor member to said fuel injection pump for varying the terminal moment of injection to vary said fuel quantities, (d) a fuel supply pump connected to said fuel injection pump to supply the latter with fuel, the output pressure of said fuel supply pump being a function of the engine rpm and (e) a hydraulic setting mechanism connected to said fuel injection pump for varying the moment of injection in response to the change in said output pressure, the improvement comprising:
  • G coupling means for connecting said control sleeve with said governor member, said control sleeve and said coupling means forming part of said means connecting said governor member to said fuel injection pump;

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
  • High-Pressure Fuel Injection Pump Control (AREA)
US309009A 1971-11-26 1972-11-24 Fuel injection apparatus for internal combustion engines Expired - Lifetime US3906916A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2158689A DE2158689C3 (de) 1971-11-26 1971-11-26 Kraftstoffeinspritzanlage für Brennkraftmaschinen mit Einspritzzeitpunktverstehlung

Publications (1)

Publication Number Publication Date
US3906916A true US3906916A (en) 1975-09-23

Family

ID=5826228

Family Applications (1)

Application Number Title Priority Date Filing Date
US309009A Expired - Lifetime US3906916A (en) 1971-11-26 1972-11-24 Fuel injection apparatus for internal combustion engines

Country Status (9)

Country Link
US (1) US3906916A (pt)
JP (1) JPS5749750B2 (pt)
AT (1) AT318974B (pt)
BR (1) BR7208249D0 (pt)
DE (1) DE2158689C3 (pt)
ES (1) ES407998A1 (pt)
FR (1) FR2162951A5 (pt)
GB (1) GB1411624A (pt)
IT (1) IT972263B (pt)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4083346A (en) * 1975-01-28 1978-04-11 Robert Bosch Gmbh Fuel injection pump for internal combustion engines
DE2653046A1 (de) * 1976-11-23 1978-05-24 Bosch Gmbh Robert Elektronisches regelverfahren und regelsystem zur bestimmung des spritzbeginns bei dieselmotoren
US4136655A (en) * 1977-06-29 1979-01-30 Eaton Corporation Fuel metering valve with inlet metering control
US4168940A (en) * 1976-10-28 1979-09-25 Robert Bosch Gmbh Fuel injection pump
US4168690A (en) * 1976-10-02 1979-09-25 Robert Bosch Gmbh Fuel injection system having timing piston responsive to load dependent pressure signal
US4169444A (en) * 1976-03-13 1979-10-02 Diesel Kiki Company, Ltd. Fuel injection apparatus
US4177775A (en) * 1977-07-01 1979-12-11 Robert Bosch Gmbh Fuel injection pump
US4262645A (en) * 1978-06-16 1981-04-21 Diesel Kiki Co., Ltd. Injection timing control device for distributor-type fuel injection pump
US4271806A (en) * 1977-06-30 1981-06-09 Diesel Kiki Co., Ltd. Distribution type fuel injection pump
US4273090A (en) * 1976-10-23 1981-06-16 Robert Bosch Gmbh Fuel injection pump
US4366796A (en) * 1977-06-30 1983-01-04 Diesel Kiki Co., Ltd. Distribution type fuel injection pump
US4387683A (en) * 1979-03-10 1983-06-14 Robert Bosch Gmbh Fuel injection pump for internal combustion engines
US4392469A (en) * 1980-10-10 1983-07-12 Robert Bosch Gmbh RPM Regulating device for the fuel injection system of an internal combustion engine
US4531492A (en) * 1984-03-27 1985-07-30 Caterpillar Tractor Co. Fuel injection timing and governor control apparatus
US4694857A (en) * 1986-03-31 1987-09-22 Stant Inc. Fuel sender unit
CN111164299A (zh) * 2017-09-29 2020-05-15 株式会社电装 高压泵

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2448693C2 (de) * 1974-10-12 1983-11-24 Robert Bosch Gmbh, 7000 Stuttgart Drehzahlregler für eine Verteilereinspritzpumpe
DE2638670A1 (de) * 1976-08-27 1978-03-02 Bosch Gmbh Robert Kraftstoffeinspritzpumpe
DE2813111C2 (de) * 1978-03-25 1986-12-18 Robert Bosch Gmbh, 7000 Stuttgart Kraftstoffeinspritzpumpe für Brennkraftmaschinen
JPS581634Y2 (ja) * 1978-09-01 1983-01-12 株式会社デンソー 分配型燃料噴射ポンプ
JPS595162Y2 (ja) * 1979-04-19 1984-02-16 株式会社ボッシュオートモーティブ システム 分配型燃料噴射ポンプのロ−ドタイマ
DE2925418A1 (de) * 1979-06-23 1981-01-29 Bosch Gmbh Robert Kraftstoffeinspritzpumpe fuer brennkraftmaschinen
DE2929176C2 (de) * 1979-07-19 1986-08-14 Robert Bosch Gmbh, 7000 Stuttgart Verteilerkraftstoffeinspritzpumpe für Brennkraftmaschinen
DE3138410A1 (de) * 1981-09-26 1983-04-14 Robert Bosch Gmbh, 7000 Stuttgart Verfahren zur ermittlung eines lastsignales an einer kraftstoffeinspritzpumpe und kraftstoffeinspritzpumpe zur durchfuehrung des verfahrens
DE3423212A1 (de) * 1984-06-22 1986-01-02 Robert Bosch Gmbh, 7000 Stuttgart Kraftstoffeinspritzpumpe
DE3642883A1 (de) * 1986-12-16 1988-06-30 Kloeckner Humboldt Deutz Ag Einspritzpumpe fuer brennkraftmaschinen mit beschleunigungs-abhaengiger-spritzverstellung (bas) insbesondere bei fahrzeugmotoren
DE3804778A1 (de) * 1988-02-16 1989-08-24 Daimler Benz Ag Reiheneinspritzpumpe fuer eine luftverdichtende einspritzbrennkraftmaschine

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2488361A (en) * 1947-06-30 1949-11-15 Us Sec War Hydraulic control means for internal-combustion engines
US2743893A (en) * 1948-06-14 1956-05-01 Peter J Spangler Portable cinder pot stand
US2910696A (en) * 1956-08-22 1959-10-27 Bosch Gmbh Robert Device for adjusting the timing of an injection pump
US2910976A (en) * 1954-02-17 1959-11-03 Bosch Arma Corp Timing device for fuel injection pump
US2914054A (en) * 1957-04-17 1959-11-24 Daimler Benz Ag Fuel injection timing apparatus
US3024779A (en) * 1958-10-30 1962-03-13 Bosch Arma Corp Timing device for fuel injection pump
US3091231A (en) * 1959-03-12 1963-05-28 Sigma Fuel injection pumps
US3433159A (en) * 1967-01-17 1969-03-18 Cav Ltd Liquid fuel injection pumps
US3603112A (en) * 1968-09-28 1971-09-07 Fiat Spa Injection pump for internal combustion engines

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2488361A (en) * 1947-06-30 1949-11-15 Us Sec War Hydraulic control means for internal-combustion engines
US2743893A (en) * 1948-06-14 1956-05-01 Peter J Spangler Portable cinder pot stand
US2910976A (en) * 1954-02-17 1959-11-03 Bosch Arma Corp Timing device for fuel injection pump
US2910696A (en) * 1956-08-22 1959-10-27 Bosch Gmbh Robert Device for adjusting the timing of an injection pump
US2914054A (en) * 1957-04-17 1959-11-24 Daimler Benz Ag Fuel injection timing apparatus
US3024779A (en) * 1958-10-30 1962-03-13 Bosch Arma Corp Timing device for fuel injection pump
US3091231A (en) * 1959-03-12 1963-05-28 Sigma Fuel injection pumps
US3433159A (en) * 1967-01-17 1969-03-18 Cav Ltd Liquid fuel injection pumps
US3603112A (en) * 1968-09-28 1971-09-07 Fiat Spa Injection pump for internal combustion engines

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4083346A (en) * 1975-01-28 1978-04-11 Robert Bosch Gmbh Fuel injection pump for internal combustion engines
US4169444A (en) * 1976-03-13 1979-10-02 Diesel Kiki Company, Ltd. Fuel injection apparatus
US4168690A (en) * 1976-10-02 1979-09-25 Robert Bosch Gmbh Fuel injection system having timing piston responsive to load dependent pressure signal
US4273090A (en) * 1976-10-23 1981-06-16 Robert Bosch Gmbh Fuel injection pump
US4168940A (en) * 1976-10-28 1979-09-25 Robert Bosch Gmbh Fuel injection pump
DE2653046A1 (de) * 1976-11-23 1978-05-24 Bosch Gmbh Robert Elektronisches regelverfahren und regelsystem zur bestimmung des spritzbeginns bei dieselmotoren
DE2653046C2 (pt) * 1976-11-23 1987-09-17 Robert Bosch Gmbh, 7000 Stuttgart, De
US4136655A (en) * 1977-06-29 1979-01-30 Eaton Corporation Fuel metering valve with inlet metering control
US4271806A (en) * 1977-06-30 1981-06-09 Diesel Kiki Co., Ltd. Distribution type fuel injection pump
US4366796A (en) * 1977-06-30 1983-01-04 Diesel Kiki Co., Ltd. Distribution type fuel injection pump
US4397284A (en) * 1977-06-30 1983-08-09 Diesel Kiki Co., Ltd. Distribution type fuel injection pump
US4177775A (en) * 1977-07-01 1979-12-11 Robert Bosch Gmbh Fuel injection pump
US4262645A (en) * 1978-06-16 1981-04-21 Diesel Kiki Co., Ltd. Injection timing control device for distributor-type fuel injection pump
US4387683A (en) * 1979-03-10 1983-06-14 Robert Bosch Gmbh Fuel injection pump for internal combustion engines
US4392469A (en) * 1980-10-10 1983-07-12 Robert Bosch Gmbh RPM Regulating device for the fuel injection system of an internal combustion engine
US4531492A (en) * 1984-03-27 1985-07-30 Caterpillar Tractor Co. Fuel injection timing and governor control apparatus
US4694857A (en) * 1986-03-31 1987-09-22 Stant Inc. Fuel sender unit
CN111164299A (zh) * 2017-09-29 2020-05-15 株式会社电装 高压泵

Also Published As

Publication number Publication date
GB1411624A (en) 1975-10-29
FR2162951A5 (pt) 1973-07-20
DE2158689B2 (de) 1978-05-18
DE2158689A1 (de) 1973-05-30
JPS5749750B2 (pt) 1982-10-23
AT318974B (de) 1974-11-25
ES407998A1 (es) 1975-11-01
DE2158689C3 (de) 1979-01-04
BR7208249D0 (pt) 1973-10-25
JPS4859220A (pt) 1973-08-20
IT972263B (it) 1974-05-20

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