US3587540A - Rpm regulating system for internal combustion engines operating on injected fuel - Google Patents

Rpm regulating system for internal combustion engines operating on injected fuel Download PDF

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Publication number
US3587540A
US3587540A US844053A US3587540DA US3587540A US 3587540 A US3587540 A US 3587540A US 844053 A US844053 A US 844053A US 3587540D A US3587540D A US 3587540DA US 3587540 A US3587540 A US 3587540A
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United States
Prior art keywords
fuel
signal
solenoid valve
quantity control
fuel quantity
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
US844053A
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English (en)
Inventor
Eberhard Hofmann
Rolf Muller
Heinrich Staudt
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Robert Bosch GmbH
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Robert Bosch GmbH
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Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
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Publication of US3587540A publication Critical patent/US3587540A/en
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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
    • F02D1/02—Controlling fuel-injection pumps, e.g. of high pressure injection type not restricted to adjustment of injection timing, e.g. varying amount of fuel delivered
    • F02D1/08—Transmission of control impulse to pump control, e.g. with power drive or power assistance
    • F02D1/12—Transmission of control impulse to pump control, e.g. with power drive or power assistance non-mechanical, e.g. hydraulic
    • 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
    • F02D1/02—Controlling fuel-injection pumps, e.g. of high pressure injection type not restricted to adjustment of injection timing, e.g. varying amount of fuel delivered
    • F02D1/08—Transmission of control impulse to pump control, e.g. with power drive or power assistance
    • 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
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/005—Arrangement of electrical wires and connections, e.g. wire harness, sockets, plugs; Arrangement of electronic control circuits in or on fuel injection apparatus
    • 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
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston

Definitions

  • regulating system that includes a hydraulic motor adapted to displace the fuel quantity control member of a fuel injection pump delivering fuel to an internal combustion engine, a solenoid valve that controls the admission of hydraulic fluid to, and its drainage from, said motor and an electronic control stage the energizing output signal of which, applied to said solenoid valve, is generated by the comparison of an r.p.m.dependent electric signal and a signal responsive to the position of said fuel quantity control member with a signal responsive to the arbitrarily set value of a desired engine output.
  • the regulating system is of the type that includes a hydraulically operated motor adapted to displace a fuel control member for varying the fuel quantities to be injected into the combustion chambers of the engine by a fuel injection pump.
  • a solenoid valve controls the admission of hydraulic fluid to, and its discharge from, a hydraulic setting motor which, accordingly, shifts a fuel quantity control member of a fuel injection pump.
  • the solenoid valve is energized by electric signals which result from a comparison of a signal depending on a variable associated with the operation of the engine (for example, the engine r.p.m.) and a signal depending on the actual momentary position of said fuel quantity control member with a signal de pending on a desired preset output of said engine.
  • FIG. 1 is a sectional side elevational view of one part of a preferred embodiment including a hydraulic setting motor;
  • FIG. 2 is a sectional side elevational view of the same part taken along another sectional plane;
  • FIG. 3 is a front elevational sectional view of another part of the preferred embodiment including the upper portion of the hydraulic setting motor.
  • FIG. 4 is a diagrammatic view including the preferred embodiment in its entirety.
  • FIGS. 1 and 4 there is shown in broken lines a fuel injection pump to the outside of which there is attached a hydraulic setting motor generally indicated at 11.
  • the motor 11 includes a pressure chamber 12 in which there is disposed a membrane 13 which is displaceable by a hydraulic fluid, the admission of which to, and discharge from, the pressure chamber 12 is controlled by a solenoid valve 23 (FIGS. 2 and 4).
  • the motion of membrane 13 is transmitted through a stem 14, a collar 15 and a bell crank 16 to a fuel quantity control rod 17 of the fuel injection pump MB.
  • a coil spring 31 which is compressed between a wall of the setting motor housing and the control rod 17 (FIG. 2).
  • a coil spring 18 exerting on stem 14 a force which is opposed to that of the hydraulic pressure in chamber 12. If the solenoid valve 23, upon energization by an appropriate signal, establishes communication between chamber 12 and a hydraulic fluid under pressure, for example, fuel driven by a fuel pump 36 and taken from a fuel line 29 (FIG. 4), the stem 14 will be displaced downwardly against the force of coil spring 18.
  • the fuel quantity control rod 17 may be brought into a zero (fuel cutoff) position regardless of its momentary position or the position of membrane 13, by operating an outer cutoff lever 33 which, in turn, actuates an arm 32 pivotally secured to the housing of motor 11 and engaging, in its position of rest, a wall of the fuel injection pump it). When actuated, arm 32 pulls the fuel quantity control rod into its zero fuel position.
  • an inductive r.p.m. indicator 21 of known structure which is driven by the cam shaft 22 of the fuel injection pump 10 and which generates an rpm-dependent electric output signal.
  • the insulating block 14b carries an electric coil 19 surrounding stem 14. To the latter there is coaxially affixed a cylindrical ferrite core 20 which moves with stem 14 as a unit and which is adapted to affect the inductivity and thus the signal output of coil 19. It is thus seen that by virtue of the mechanical connection between the core 20 and the fuel quantity control rod 17, the momentary position of the latter will determine the magnitude of the signal output of coil 19.
  • the ferrite core 20 may be set by an adjusting device 20' -preferably self-locking nut relative to coil 19 and against the force of a spring 20" for determining the basic signal output of coil 19.
  • a performance indicator 35 which generates an output signal as a function of the desired engine perfonnance.
  • the conductor plate 25 may be connected by a multipole plug 25a, preferably embedded in a synthetic resin, to the electronic control stage 34.
  • the solenoid valve 23 In response to the energizing signal, the solenoid valve 23 permits admission of the pressurized fuel to pressure chamber 12 and, as a result, the stem 14 will be displaced downwardly, setting the fuel quantity control rod 17 into a determined position. At the same time, the ferrite core 20 is shifted and thus the output signal of the coil 19 has changed, indicating to the electronic control 34 the actual value of the position of the control rod 17 (actual fuel delivery from the fuel injection pump to the internal combustion engine). A comparison by the electronic control stage 34 of the output signals taken from r.p.m. indicator 21, and the position indicator 19, 20 with the signal of the desired performance indicator 35 will adjust the energizing signal applied to solenoid valve 23 to a value where the fuel quantity control rod 17 is set to the determined position corresponding to the desired engine perforrnance.
  • This last'named signal energizes the solenoid valve 23 in a direction that permits drainage of fuel from the pressure chamber 12 of the setting motor 11 through return conduits 29a Proportionally to the volume of the fuel drained from the pressure chamber 12, the stem 14 is moved by the coil spring 18 upwardly and displaces through the collar l and the bellcrank 16 the fuel quantity control rod 17 of the fuel injection pump it) in the direction of decreasing fuel quantities.
  • the injected fuel quantities are decreased and the rpm. again drops.
  • the ferrite core 20 is displaced relative to the coil l9 resulting in a change in the inductivity of the coil 19 causing a change in the output signal thereof.
  • This changed signal is, together with the signal of the r.p.m. indicator 21, compared with the desired value by the electronic control stage 34 and as soon as r.p.m. and load (injected fuel quantities) have assumed the values assigned to the operational condition under consideration, the regulating motion of the stem M of the regulating system is terminated.
  • a signal characterizing the momentary position of the control rod 17 is transmitted to the electronic control 34 which compares the last-named signal and the signal transmitted by the rpm. indicator 21 with the desired values of the regulator characteristics given by the preset performance indicator 35 and causes a desired actuation of the solenoid valve 23.
  • the solenoid valve 23 switches in such a rapid, continuous sequence between pressure and drainage that the control rod 17 is practically stationary or vibrates only very weakly. Such weak vibration has no effect on the operation of the engine.
  • a hydraulic setting motor having:
  • mechanical means displaceable in response to said pressure conditions for moving said fuel quantity control member, said mechanical means including:
  • B. means generating an electrical signal responsive to a vari able changing as a function of the performance of said engine
  • D. means generating an electrical signal corresponding to an arbitrarily set value of desired engine performance.
  • E. means comparing said signals defined in B and C with said signal defined in D and generating an electric energizing signal resulting from such comparison
  • A. means generating an electrical signal responsive to a variable changing as a function of the performance of said engine
  • a hydraulic setting motor having:
  • D. means generating an electrical signal corresponding to an arbitrarily set value of desired engine performance
  • E. means comparing said signals defined in A and B with said signal defined in D and generating an electric energizing signal resulting from such comparison
  • adjusting means defined in C 4 b includes a self-locking nut threaded on said stem and a spring urging said core against said self-locking nut.
  • a hydraulic setting motor having l. a pressure chamber
  • B. means generating an electrical signal responsive to a variable changing as a function of the performance of said engine
  • D. means generating an electrical signal corresponding to an arbitrarily set valve of desired engine performance
  • E. means comparing said signals defined in B and C with said signal defined in D and generating an electric energizing signal resulting from such comparison
  • F. means for applying said electrical energizing signal defined in E to said solenoid valve to effect operation thereof as defined in A 2 G. a housing containing said hydraulic setting motor, said means generating an electric signal responsive to a varia b le changing as a function of the performance of said englne and said means generating an electric signal responsive to the actual momentary position of said fuel quantity control member,
  • J. electric outlet means affixed to.the outer face of said closure plate and coupled to said exposed conductor means

Landscapes

  • 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)
  • Fuel-Injection Apparatus (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
US844053A 1968-07-25 1969-07-23 Rpm regulating system for internal combustion engines operating on injected fuel Expired - Lifetime US3587540A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19681751765 DE1751765A1 (de) 1968-07-25 1968-07-25 Regeleinrichtung fuer Einspritz-Brennkraftmaschinen

Publications (1)

Publication Number Publication Date
US3587540A true US3587540A (en) 1971-06-28

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ID=5692459

Family Applications (1)

Application Number Title Priority Date Filing Date
US844053A Expired - Lifetime US3587540A (en) 1968-07-25 1969-07-23 Rpm regulating system for internal combustion engines operating on injected fuel

Country Status (7)

Country Link
US (1) US3587540A (enrdf_load_stackoverflow)
AT (1) AT292381B (enrdf_load_stackoverflow)
CH (1) CH496167A (enrdf_load_stackoverflow)
DE (1) DE1751765A1 (enrdf_load_stackoverflow)
ES (1) ES369870A1 (enrdf_load_stackoverflow)
FR (1) FR2013664A1 (enrdf_load_stackoverflow)
GB (1) GB1257093A (enrdf_load_stackoverflow)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3722485A (en) * 1971-03-09 1973-03-27 Diesel Kiki Co Electronic governor for fuel-injection type internal combustion engines
US3731664A (en) * 1971-03-10 1973-05-08 Nippon Denso Co Control voltage generator for electrical fuel control system
US3739757A (en) * 1970-03-06 1973-06-19 Diesel Kiki Co Electronic governor having an overspeed preventing circuit for internal combustion engines
US3750633A (en) * 1970-03-14 1973-08-07 Diesel Kiki Co Electronic governor for fuel-injection type internal combustion engines
US3822679A (en) * 1971-09-08 1974-07-09 Nippon Denso Co Fuel control system for fuel injection type internal combustion engine
US3978837A (en) * 1973-12-14 1976-09-07 U.S. Philips Corporation Device for automatic speed control of a diesel engine
US4014304A (en) * 1974-09-02 1977-03-29 Fiat Societa Per Azioni Injection pumps for diesel engines
US4033310A (en) * 1972-10-04 1977-07-05 C.A.V. Limited Fuel pumping apparatus with timing correction means
US4270502A (en) * 1978-06-10 1981-06-02 Lucas Industries Limited Fuel injection pumping apparatus
US4501237A (en) * 1982-07-16 1985-02-26 Same S.P.A. Control unit for the lubricating oil circulation pump and for the fuel injection system regulator of diesel engines
US4811710A (en) * 1987-07-29 1989-03-14 Robert Bosch Gmbh Fuel injection pump for internal combustion engines
US4811711A (en) * 1987-07-29 1989-03-14 Robert Bosch Gmbh Fuel injection pump for internal combustion engines
US4922873A (en) * 1988-08-31 1990-05-08 Synchro-Start Electromechanical run/stop actuator for diesel engine
US5468126A (en) * 1993-12-23 1995-11-21 Caterpillar Inc. Hydraulic power control system
US5525043A (en) * 1993-12-23 1996-06-11 Caterpillar Inc. Hydraulic power control system
US5633593A (en) * 1991-05-22 1997-05-27 Wolff; George D. Apparatus for sensing proximity of a moving target

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1090831B (de) * 1959-04-18 1960-10-13 Rudolf Beilschmidt UEbertopf fuer Blumentoepfe
DE2803750A1 (de) * 1978-01-28 1979-08-02 Bosch Gmbh Robert Verfahren und einrichtung zur kraftstoffzumessung bei brennkraftmaschinen
GB2047899B (en) * 1979-03-10 1984-03-07 Bosch Gmbh Robert Electrical position sensor for a fuel injection pump
DE2934476A1 (de) * 1979-08-25 1981-03-26 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8900 Augsburg Brennstoffeinspritzvorrichtung fuer brennkraftmaschinen
DE3225085C2 (de) * 1982-07-05 1985-03-21 Daimler-Benz Ag, 7000 Stuttgart Verfahren zum Steuern der Brennstoffzumessung für eine Brennkraftmaschine
DE3243923C2 (de) * 1982-11-26 1985-12-19 Liebherr-Hydraulikbagger Gmbh, 7951 Kirchdorf Verfahren zur Steuerung der Drehzahl eines Dieselmotors in einem Hydraulikbagger
FR2567577B1 (fr) * 1984-07-12 1989-03-03 Cav Roto Diesel Perfectionnements aux pompes d'injection de combustible pour moteurs a combustion interne
DE3536835A1 (de) * 1985-10-16 1987-04-16 Iveco Magirus Vorrichtung zum regeln der kraftstoffzufuhr einer brennkraftmaschine
DE3713288A1 (de) * 1986-07-25 1988-02-04 Man Nutzfahrzeuge Gmbh Steuereinrichtung fuer die verstellung des einspritzzeitpunktes und/oder der foerdermenge einer kraftstoffeinspritzpumpe
DE3637290A1 (de) * 1986-11-03 1988-05-11 Bayerische Motoren Werke Ag Regeleinrichtung fuer eine kraftstoffeinspritzpumpe einer bkm
DE3804036C2 (de) * 1988-02-10 1999-05-06 Hubert K Block Kombinierte Vorrichtung für verbesserte Vegetationsbedingungen und die Langzeitversorgung von Erdkulturpflanzen

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3739757A (en) * 1970-03-06 1973-06-19 Diesel Kiki Co Electronic governor having an overspeed preventing circuit for internal combustion engines
US3750633A (en) * 1970-03-14 1973-08-07 Diesel Kiki Co Electronic governor for fuel-injection type internal combustion engines
US3722485A (en) * 1971-03-09 1973-03-27 Diesel Kiki Co Electronic governor for fuel-injection type internal combustion engines
US3731664A (en) * 1971-03-10 1973-05-08 Nippon Denso Co Control voltage generator for electrical fuel control system
US3822679A (en) * 1971-09-08 1974-07-09 Nippon Denso Co Fuel control system for fuel injection type internal combustion engine
US4033310A (en) * 1972-10-04 1977-07-05 C.A.V. Limited Fuel pumping apparatus with timing correction means
US3978837A (en) * 1973-12-14 1976-09-07 U.S. Philips Corporation Device for automatic speed control of a diesel engine
US4014304A (en) * 1974-09-02 1977-03-29 Fiat Societa Per Azioni Injection pumps for diesel engines
US4270502A (en) * 1978-06-10 1981-06-02 Lucas Industries Limited Fuel injection pumping apparatus
US4501237A (en) * 1982-07-16 1985-02-26 Same S.P.A. Control unit for the lubricating oil circulation pump and for the fuel injection system regulator of diesel engines
US4811710A (en) * 1987-07-29 1989-03-14 Robert Bosch Gmbh Fuel injection pump for internal combustion engines
US4811711A (en) * 1987-07-29 1989-03-14 Robert Bosch Gmbh Fuel injection pump for internal combustion engines
US4922873A (en) * 1988-08-31 1990-05-08 Synchro-Start Electromechanical run/stop actuator for diesel engine
US5633593A (en) * 1991-05-22 1997-05-27 Wolff; George D. Apparatus for sensing proximity of a moving target
US5468126A (en) * 1993-12-23 1995-11-21 Caterpillar Inc. Hydraulic power control system
US5525043A (en) * 1993-12-23 1996-06-11 Caterpillar Inc. Hydraulic power control system

Also Published As

Publication number Publication date
FR2013664A1 (enrdf_load_stackoverflow) 1970-04-03
GB1257093A (enrdf_load_stackoverflow) 1971-12-15
AT292381B (de) 1971-08-25
ES369870A1 (es) 1971-07-16
DE1751765A1 (de) 1971-08-05
CH496167A (de) 1970-09-15

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