US3661126A - Fuel injection systems - Google Patents

Fuel injection systems Download PDF

Info

Publication number
US3661126A
US3661126A US856758A US3661126DA US3661126A US 3661126 A US3661126 A US 3661126A US 856758 A US856758 A US 856758A US 3661126D A US3661126D A US 3661126DA US 3661126 A US3661126 A US 3661126A
Authority
US
United States
Prior art keywords
pulses
engine
pulse generator
pulse
fuel injection
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
US856758A
Other languages
English (en)
Inventor
Albert E Baxendale
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AE PLC
Federal Mogul Coventry Ltd
ZF International UK Ltd
Original Assignee
Brico Engineering Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Brico Engineering Ltd filed Critical Brico Engineering Ltd
Application granted granted Critical
Publication of US3661126A publication Critical patent/US3661126A/en
Assigned to LUCAS INDUSTRIES PUBLIC LIMITED COMPANY, GREAT KING STREET, BIRMINGHAM, ENGLAND reassignment LUCAS INDUSTRIES PUBLIC LIMITED COMPANY, GREAT KING STREET, BIRMINGHAM, ENGLAND ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: AE PLC
Assigned to AE PLC CAWSTON HOUSE CAWSTON, RUGBY WARWICKSHIRE ENGLAND reassignment AE PLC CAWSTON HOUSE CAWSTON, RUGBY WARWICKSHIRE ENGLAND ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: BRICO ENGINEERING LIMITED
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/04—Introducing corrections for particular operating conditions
    • F02D41/10—Introducing corrections for particular operating conditions for acceleration
    • F02D41/102—Switching from sequential injection to simultaneous injection

Definitions

  • ABSTRACT li ⁇ 'uminer-Ronald B Cox Almrm' ⁇ Holcombe, Wetherill & Brisebois
  • the invention relates to a fuel injection system wherein enrichment of the fuel is effected, when the engine is conditioned for acceleration, by means applying to the electromagnetic fuel injection valves, further energizing pulses in addition to those which are applied to the injectors during normal operation ofthe engine.
  • Il3 I FUEL INJECTION SYSTEMS This invention relates to fuel injection systems for internal combustion engines.
  • the invention relates to a fuel injection system for an internal combustion engine which includes a plurality of electromagnetically operated fuel injection valves, a pulse generator circuit producing electrical pulses for energizing said valves, so that each valve is opened for a period depending on the duration of the pulse by which it is energized, to pass fuel to the engine, said pulse generator circuit including a timing circuit for controlling the duration of said pulses, means to feed at least one variable electrical potential, which varies as a function of at least one parameter of engine operation, to the pulse generator circuit to control said pulse duration, and trigger means to initiate said pulses, said trigger means operating at a frequency depending on the rotational speed of the engine.
  • a system of this type is described in U.S. Pat. No. 3272187.
  • the system includes means to initiate further pulses when acceleration of the engine is required, in addition to those pulses initiated by said trigger means, whereby additional fuel is delivered through said fuel-injection valves to enhance acceleration.
  • the said further pulse initiating means may be actuated by changes in a parameter which occur when the engine accelerates or is conditioned to accelerate, for example, changes in the position of the throttle, or resultant changes in pressure in the induction manifold of the engine.
  • Said initiating means may be arranged to energize all the fuel-injection valves simultaneously, either once or several times upon initiation of, or during, acceleration, and in the latter event the pulse spacing, or time delay between successive energizations may vary in dependance upon the rate of acceleration required.
  • the or each main pulse generator supplying the pulses to the fuel injection valves during normal running of the engine ie when not accelerating may be activated by said initiating means to produce said further pulses.
  • said initiating means may comprise, or be connected to, one or more auxilliary pulse generators for producing said further pulses.
  • Said further pulse initiating means may be employed in the system either alone or in combination with other acceleration enrichment means, such as the means described in the aforementioned United States Patent.
  • FIG. 1 is a block circuit diagram of one embodiment
  • FIG. 2 is a detail view of one alternative arrangement of part of FIG. 1,
  • FIG. 3 is a detail view of another alternative arrangement of FIG. 1,
  • FIG. 4 is a diagram illustrating the operation of an embodiment of fuel injection system in accordance with this embodiment of the invention.
  • FIG. 5 is a block circuit diagram of a second embodiment
  • FIG. 6 is a circuit diagram of the auxilliary pulse generators and associated circuitry.
  • the fuel injection system shown is intended for a six-cylinder engine and includes six fuel injection valves 11 arranged in two groups of three.
  • the valves are screwed into housings in the engine induction manifold, just upstream of the inlet valve of the corresponding cylinder.
  • Fuel is supplied at a controlled pressure to each valve 11, for example as described in U.S. Pat. No. 3,240,191, and the fuel injection valves are electromagnetically operated and may be as described in U.S. Pat. No. 3,247,833.
  • Each group of fuel injection valvesll is electrically connected to a pulse generator 12, the circuit of which produces a current pulse to energize the group of valves, thereby to inject fuel into the induction manifold.
  • the main pulses are initiated by a trigger device 13, which is in effect a switch which is operated once per engine cycle for each group of cylinders.
  • a fuel injection system in accordance with the invention may be designed for engines having any practical number of cylinders, and moreover each group of valves connected to a pulse generator may include any convenient number of valves, from one upwards.
  • Each pulse generator 12 includes a timing circuit controlling the duration of the main pulses, and this duration is determined in accordance with the values of two potentials V and V which in turn depend on the values of certain engine operating parameters.
  • the potential V depends on the engine manifold pressure which is sensed by a pressure transducer forming part of a manifold pressure control circuit 14 and connected to the induction manifold between the throttle and the inlet valves of the engine, and also depends upon the rotational speed of the engine which is sensed from the trigger device 13 by means of an engine speed discriminator 15.
  • the potential V depends on the engine water temperature and the ambient air temperature, which temperatures are sensed, respectively, by a water temperature transducer connected into the water cooling system of the engine and by an air temperature transducer, both of which form part of a start and warm up control circuit 16.
  • These various transducers may incorporate variable resistance elements, the resistances of which will be varied in accordance with the value of the respective operating parameters, and the resistance elements may be incorporated in voltage dividers forming part of associated circuits, namely the inlet manifold pressure control circuit 14, the engine speed discriminator circuit 15, and the start and warm up control circuit 16. Since the present invention is not concerned with the means by which the main pulses or the potentials V V; are produced, the pulse generators 12, the circuits 14, l5 16 will not be described or illustrated in detail.
  • each pulse generator 12 may, for example take the form of, and operate in the manner of, the pulse generator 8 disclosed in the aforementioned U.S. Pat. No. 3272187, and the said circuits and transducers may also take the forms disclosed in this latter Patent, and for further details of the construction and operation of these components, reference should be made to this Patent.
  • the fuel injection system also includes a device 17, which responds to an increase in induction manifold pressure on opening of the throttle, and which activates the pulse generators 12 to produce further pulses, in addition to the main pulses initiated by the trigger device 13, when the increase in manifold pressure on opening of the throttle valve exceeds certain values.
  • This device 17 activates the pulse generators 12 simultaneously, so that said further pulses are produced simultaneously at all the fuel injectors 11, and therefore, additional fuel is delivered into the induction manifold.
  • FIG. 2 One form of the device 17 for sensing when acceleration is called for is shown in FIG. 2.
  • a housing 21 is secured to the exterior of the induction manifold wall 22, downstream of the engine throttle, and is divided by a diaphragm 23 into two spaces 24, 25.
  • the space 24 communicates with the interior of the manifold through a large hole 26 and is virtually at the same pressure as the interior while the space 25 communicates with space 24 through a small hole 27.
  • the diaphragm carries one switch contact 28, and another contact 29 is carried by, but insulated from, the housing 21.
  • a coil spring 30 loads the diaphragm, and also serves to connect switch contact 28 to one terminal of the switch, which is insulated from the terminal connected to the other contact 29.
  • FIG. 3 Another form of device for sensing when acceleration is called for is shown in FIG. 3, which, in this case responds to rate of change of position of part of the linkage 40 between the accelerator pedal and the engine throttle.
  • This device includes a cylinder 41 containing air or a hydraulic fluid and two pistons 42, 43.
  • One piston 42 is connected to the throttle linkage, and has a bleed orifice 44, the other piston 43 is connected so that, on movement against a spring 45, it causes a switch 46 to make, the switch contacts being connected to the pulse generators 12 as described with reference to FIG. 2.
  • the pressures in the two end spaces of the cylinder are equalized by a connection 47, which is not connected to the central space 48.
  • FIG. 4 The effect is illustrated in FIG. 4 in which, for convenience, both the change in induction manifold pressure (trace 51) and the change in throttle angle (trace 52) are plotted against time, together with traces showing the current pulses supplied to different injectors 11.
  • the latter are drawn for a sixcylinder engine having a firing order l53,624, with injectors for cylinders l, 5 and 3 connected to the first pulse generator 12, and those for cylinders 6, 2 and 4 connected to the second pulse generator.
  • the further pulses 53 are fed simultaneously to the different injectors, irrespective of the part of the cycle of each cylinder at which the acceleration demand signal, e.g. increase in manifold pressure or change of throttle angle, begins, and this occurs irrespective of how the acceleration is sensed.
  • the pulse generators 12 which produced the main pulses are also employed to produce a single group of further fuel enrichment pulses which simultaneously energize all of the fuel injection valves once only.
  • successive groups of further fuel enrichment pulses are produced by auxilliary pulse generators each time that the engine is conditioned to accelerate.
  • this system is basically similar to that previously described in that it incorporates two pulse generators 112 each connected to three fuel injectors 111, and operated by a trigger device 1 13, and in that the duration of the main pulses is dependant upon the two potentials V and V
  • the potential V is derived from an engine speed discriminator 115, and a manifold pressure control circuit 114 having a manifold pressure transducer 114a.
  • the potential V is derived from a start and warm up control circuit 116 having a water temperature transducer 116a, and, in this embodiment, connected to the manifold pressure transducer 1 14a via a DC amplifier 160, resistor R1, capacitor C1 and controlledgain DC amplifier 161, all of which form part of an auxilliary pulse generator circuit indicated generally at 162, so that this input signal to circuit 116, and therefore V will be dependant upon the rate of change of pressure in the induction manifold.
  • the duration of the main pulses produced by the pulse generators 112 will be increased to provide progressive fuel enrichment during, or upon initiation of, acceleration, in addition to the fuel enrichment provided by the further pulses.
  • the air temperature transducer 116b is connected to an air temperature control circuit 163, the output V3 of which is fed separately to the main pulse generators 112, so that the duration of the main pulses will also be dependent upon this potential V
  • a compensator 170 is provided to compensate for variations in supply voltage V
  • the signal from the manifold pressure transducer 114a, after DC amplification by the amplifier 160, is AC coupled via capacitor C, to four auxilliary pulse generators 164 connected in parallel.
  • the outputs from the generators 164 are coupled via diodes D1 to a further DC amplifier 165 connected to the amplifier stages of both main pulse generators 112, for example to the input of the transistor TR7 of the pulse generator shown in FIG. 2 of US. Pat. No. 3272187.
  • the auxilliary pulse generators 164 have different sensitivities so that they will be triggered by signals corresponding to different manifold pressure levels relative to a quiescent level corresponding to the manifold pressure before acceleration is initiated.
  • the generators 164 may, for example, be initially adjusted so that they will be triggered by pressures evenly distributed throughout the normal range of manifold pressures between the fully closed and fully open conditions of the throttle.
  • the capacitor C2 will be charged to a value dependent upon the engine speed to determine the quiescent level, and upon opening of the throttle to initiate acceleration, the pressure will increase, the rate and amount of increase depending upon rate and amount of opening of the throttle, thus triggering the auxilliary generators 164 in turn so that groups of further pulses will be applied to the fuel injectors 111.
  • groups of further pulses will be applied to the injectors, while for lesser degrees of acceleration the groupspacing will increase, and for light accelerations, only one, two or three of the generators 164 may be triggered.
  • the control potential V is applied to the auxilliary generators 164 via a buffer 166, so that the pulse width of the further pulses will be dependent upon water temperature.
  • the auxilliary pulse generator circuit 162 is shown in detail in FIG. 6.
  • the transistor TRl and associated components comprise the DC amplifier 160
  • the transistors TR2 to TRS and their associated components comprise the four auxilliary pulse generators 164
  • TR6 constitutes the buffer 166
  • TR8 to 'I'Rll and their associated components constitute the DC amplifier 165.
  • the transistors TR12 to TR14 constitute the controlled gain DC amplifier 161.
  • the auxilliary pulse generators 164 are additionally connected via the network 167 and terminal 168 to the starter motor contact of the engine, which block the generators 164 during starting of the engine, when fluctuating pressures are created in the manifold which might otherwise trigger one or more of the generators 164.
  • the generators 164 are also coupled via terminal 169 to an on-off switch operated by the throttle, which is actuated to block the generators 164 when the throttle is closed and the engine is idling.
  • the system illustrated in FIG. 1 may embody means for increasing the duration of the main pulses triggered by the device 13 upon initiation of, or during, acceleration, either progressively or by a fixed amount, to supplement the fuel enrichment afforded by the further pulses triggered by the device 17.
  • the system illustrated in FIG. 5 may be designed so that the main pulse duration is increased by a fixed amount, instead of progressively, upon acceleration, or is independent of acceleration whereby the fuel enrichment required upon acceleration will be effected solely by the further pulses.
  • auxilliary pulse generators 164 may be provided in the system of FIG. 5, and these pulse generators may be arranged to be triggered at any desired manifold pressures.
  • the systems described and illustrated may incorporate means to provide a threshold, which may or may not be adjustable, to prevent the further pulses from being produced, or fed to the fuel injectors when rate of change of manifold pressure is below a minimum value.
  • a threshold which may or may not be adjustable, to prevent the further pulses from being produced, or fed to the fuel injectors when rate of change of manifold pressure is below a minimum value.
  • the further pulses produced by the systems have a variable duration, they may be of fixed duration.
  • the further pulses are produced as a result of signals derived from an absolute pressure transducer connected into the induction manifold, a transducer which detects the actual rate of change of pressure in the manifold may be employed, or the signals may be derived from a transducer associated with the throttle.
  • a fuel injection system for an internal combustion engine which includes a plurality of electromagnetically operated fuel injection valves, at least one pulse generator circuit producing electrical pulses for energizing said valves, so that each valve is opened for a period depending on the duration of the pulse by which it is energized, to pass fuel to the engine, said pulse generator circuit including a timing circuit for controlling the duration of said pulses, means to feed at least one variable electrical potential, which varies as a function of at least one parameter of engine operation, to the pulse generator circuit to control said pulse duration, trigger means to initiate said pulses, said trigger means operating at a frequency depending on the rotational speed of the engine, and further pulse-initiating means operable independently of said trigger means to initiate further pulses when acceleration of the engine is required, said further pulses being applied to the fuel injection valves in addition to those pulses initiated by said trigger means, whereby additional fuel is delivered through said fuelinjection valves to enhance acceleration, said further pulse initiating means including a plurality of auxiliary pulse generator circuits for producing a plurality of successive further

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
US856758A 1968-09-12 1969-09-10 Fuel injection systems Expired - Lifetime US3661126A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB43503/68A GB1272595A (en) 1968-09-12 1968-09-12 Fuel injection systems

Publications (1)

Publication Number Publication Date
US3661126A true US3661126A (en) 1972-05-09

Family

ID=10429030

Family Applications (1)

Application Number Title Priority Date Filing Date
US856758A Expired - Lifetime US3661126A (en) 1968-09-12 1969-09-10 Fuel injection systems

Country Status (4)

Country Link
US (1) US3661126A (enrdf_load_stackoverflow)
DE (1) DE1946266A1 (enrdf_load_stackoverflow)
FR (1) FR2017918A1 (enrdf_load_stackoverflow)
GB (1) GB1272595A (enrdf_load_stackoverflow)

Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3759231A (en) * 1970-05-07 1973-09-18 Nippon Denso Co Electrical fuel injection control system for internal combustion engines
US3785353A (en) * 1972-04-26 1974-01-15 J Borisov Fuel injection system for internal combustion engine
US3835825A (en) * 1969-11-21 1974-09-17 Brico Eng Internal combustion engines
US3854458A (en) * 1970-10-15 1974-12-17 Bendix Corp Fuel injection control system
US3926153A (en) * 1974-04-03 1975-12-16 Bendix Corp Closed throttle tip-in circuit
US3983850A (en) * 1974-01-24 1976-10-05 Robert Bosch G.M.B.H. Apparatus for supplying fuel for acceleration during the warm-up phase of an internal combustion engine
US3991726A (en) * 1974-01-26 1976-11-16 Nippondenso Co., Ltd. Electronically controlled fuel injection system
US3996915A (en) * 1973-11-05 1976-12-14 Resonance Motors, Inc. Engine selectively utilizing hybrid thermodynamic combustion cycles
US4010717A (en) * 1975-02-03 1977-03-08 The Bendix Corporation Fuel control system having an auxiliary circuit for correcting the signals generated by the pressure sensor during transient operating conditions
US4069795A (en) * 1975-11-06 1978-01-24 Allied Chemical Corporation Start-up control for fuel injection system
US4153014A (en) * 1977-03-17 1979-05-08 The Bendix Corporation Peripheral circuitry for single-point fuel injection
US4176625A (en) * 1977-04-20 1979-12-04 The Bendix Corporation Pulse time addition circuit for electronic fuel injection systems
US4184461A (en) * 1977-09-26 1980-01-22 The Bendix Corporation Acceleration enrichment for closed loop control systems
US4191137A (en) * 1976-11-04 1980-03-04 Lucas Industries Limited Electronic fuel injection control for an internal combustion engine
US4202295A (en) * 1976-09-23 1980-05-13 Nippondenso Co., Ltd. Fuel supply control system for internal combustion engines
US4223643A (en) * 1977-02-21 1980-09-23 Robert Bosch Gmbh Method and apparatus for fuel mixture enrichment during acceleration
US4244023A (en) * 1978-02-27 1981-01-06 The Bendix Corporation Microprocessor-based engine control system with acceleration enrichment control
US4245312A (en) * 1978-02-27 1981-01-13 The Bendix Corporation Electronic fuel injection compensation
US4245605A (en) * 1979-06-27 1981-01-20 General Motors Corporation Acceleration enrichment for an engine fuel supply system
US4255789A (en) * 1978-02-27 1981-03-10 The Bendix Corporation Microprocessor-based electronic engine control system
US4266522A (en) * 1976-11-04 1981-05-12 Lucas Industries Limited Fuel injection systems
US4338813A (en) * 1980-09-02 1982-07-13 Motorola Inc. Electronic engine synchronization and timing apparatus
US4338903A (en) * 1980-09-02 1982-07-13 Motorola Inc. Electronic cylinder identification apparatus for synchronizing fuel injection
US4428349A (en) 1979-05-17 1984-01-31 Snow Thomas K Ignition and fuel control system for internal combustion engines
US4523571A (en) * 1982-06-16 1985-06-18 Honda Giken Kogyo Kabushiki Kaisha Fuel supply control method for internal combustion engines at acceleration
US4532908A (en) * 1982-09-24 1985-08-06 Robert Bosch Gmbh Control device for metering fuel in a supercharged internal combustion engine
US4561405A (en) * 1981-12-31 1985-12-31 Orbital Engine Company Proprietary Limited Control of fuel injection apparatus for internal combustion engines
US4562814A (en) * 1983-02-04 1986-01-07 Nissan Motor Company, Limited System and method for controlling fuel supply to an internal combustion engine
US4726342A (en) * 1986-06-30 1988-02-23 Kwik Products International Corp. Fuel-air ratio (lambda) correcting apparatus for a rotor-type carburetor for integral combustion engines
US4869850A (en) * 1986-06-30 1989-09-26 Kwik Products International Corporation Rotor-type carburetor apparatus and associated methods
USRE33929E (en) * 1982-05-28 1992-05-19 Kwik Products International Corporation Central injection device for internal combustion engines

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1596504A (en) * 1976-11-04 1981-08-26 Lucas Industries Ltd Electronic fuel injection control for an internal combustion engine
JPS5578131A (en) * 1978-12-06 1980-06-12 Nissan Motor Co Ltd Fuel ejection control device
JPS57137626A (en) * 1981-02-17 1982-08-25 Honda Motor Co Ltd Control method of fuel injection
JPS588240A (ja) * 1981-07-08 1983-01-18 Hitachi Ltd ４気筒４サイクル内燃機関の電子式燃料噴射装置
JPS5891338A (ja) * 1981-11-24 1983-05-31 Honda Motor Co Ltd 多気筒内燃エンジンの電子式燃料噴射制御装置
GB2116333B (en) * 1982-03-01 1987-01-14 Honda Motor Co Ltd Fuel supply control system for internal combustion engines
JPS58222927A (ja) * 1982-06-18 1983-12-24 Honda Motor Co Ltd 車輌用内燃エンジンの始動時の燃料噴射方法
JPS6062638A (ja) * 1983-09-16 1985-04-10 Mazda Motor Corp エンジンの燃料噴射装置

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2867200A (en) * 1957-03-20 1959-01-06 Bendix Aviat Corp Auxiliary control means for pulse producing circuit
US2911966A (en) * 1956-09-07 1959-11-10 Bendix Aviat Corp Acceleration control for fuel injector
US2941519A (en) * 1957-12-07 1960-06-21 Bosch Gmbh Robert Fuel injection system
US2948272A (en) * 1956-11-16 1960-08-09 Bendix Aviat Corp Fuel supply system
GB858964A (en) * 1956-11-16 1961-01-18 Bendix Corp Fuel supply system for internal combustion engines
US3089306A (en) * 1958-12-11 1963-05-14 Power Jets Res & Dev Ltd Limitation of thermal shock in engine components
US3240191A (en) * 1962-06-07 1966-03-15 Ass Eng Ltd Fuel injection systems for internal combustion engines
US3319613A (en) * 1965-06-03 1967-05-16 Electronic Specialty Co Fuel injection system
US3335708A (en) * 1964-01-17 1967-08-15 Ass Eng Ltd Discriminator devices
US3429302A (en) * 1966-08-24 1969-02-25 Bosch Gmbh Robert Arrangement for controlling the injection of fuel in engines
US3435809A (en) * 1965-04-29 1969-04-01 Sopromi Soc Proc Modern Inject Device for the control of fuel injection
US3483851A (en) * 1966-11-25 1969-12-16 Bosch Gmbh Robert Fuel injection control system
US3504657A (en) * 1967-05-24 1970-04-07 Bosch Gmbh Robert System for enriching the fuel mixture on cold starts in an electrically controlled injection system for an internal combustion engine
US3548791A (en) * 1968-07-08 1970-12-22 Gillett Tool Co Precision fuel metering system having operational mode change during transient intervals

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2911966A (en) * 1956-09-07 1959-11-10 Bendix Aviat Corp Acceleration control for fuel injector
US2948272A (en) * 1956-11-16 1960-08-09 Bendix Aviat Corp Fuel supply system
GB858964A (en) * 1956-11-16 1961-01-18 Bendix Corp Fuel supply system for internal combustion engines
US2867200A (en) * 1957-03-20 1959-01-06 Bendix Aviat Corp Auxiliary control means for pulse producing circuit
US2941519A (en) * 1957-12-07 1960-06-21 Bosch Gmbh Robert Fuel injection system
US3089306A (en) * 1958-12-11 1963-05-14 Power Jets Res & Dev Ltd Limitation of thermal shock in engine components
US3240191A (en) * 1962-06-07 1966-03-15 Ass Eng Ltd Fuel injection systems for internal combustion engines
US3335708A (en) * 1964-01-17 1967-08-15 Ass Eng Ltd Discriminator devices
US3435809A (en) * 1965-04-29 1969-04-01 Sopromi Soc Proc Modern Inject Device for the control of fuel injection
US3319613A (en) * 1965-06-03 1967-05-16 Electronic Specialty Co Fuel injection system
US3429302A (en) * 1966-08-24 1969-02-25 Bosch Gmbh Robert Arrangement for controlling the injection of fuel in engines
US3483851A (en) * 1966-11-25 1969-12-16 Bosch Gmbh Robert Fuel injection control system
US3504657A (en) * 1967-05-24 1970-04-07 Bosch Gmbh Robert System for enriching the fuel mixture on cold starts in an electrically controlled injection system for an internal combustion engine
US3548791A (en) * 1968-07-08 1970-12-22 Gillett Tool Co Precision fuel metering system having operational mode change during transient intervals

Cited By (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3835825A (en) * 1969-11-21 1974-09-17 Brico Eng Internal combustion engines
US3759231A (en) * 1970-05-07 1973-09-18 Nippon Denso Co Electrical fuel injection control system for internal combustion engines
US3854458A (en) * 1970-10-15 1974-12-17 Bendix Corp Fuel injection control system
US3785353A (en) * 1972-04-26 1974-01-15 J Borisov Fuel injection system for internal combustion engine
US3996915A (en) * 1973-11-05 1976-12-14 Resonance Motors, Inc. Engine selectively utilizing hybrid thermodynamic combustion cycles
US3983850A (en) * 1974-01-24 1976-10-05 Robert Bosch G.M.B.H. Apparatus for supplying fuel for acceleration during the warm-up phase of an internal combustion engine
US3991726A (en) * 1974-01-26 1976-11-16 Nippondenso Co., Ltd. Electronically controlled fuel injection system
US3926153A (en) * 1974-04-03 1975-12-16 Bendix Corp Closed throttle tip-in circuit
US4010717A (en) * 1975-02-03 1977-03-08 The Bendix Corporation Fuel control system having an auxiliary circuit for correcting the signals generated by the pressure sensor during transient operating conditions
US4069795A (en) * 1975-11-06 1978-01-24 Allied Chemical Corporation Start-up control for fuel injection system
US4202295A (en) * 1976-09-23 1980-05-13 Nippondenso Co., Ltd. Fuel supply control system for internal combustion engines
US4191137A (en) * 1976-11-04 1980-03-04 Lucas Industries Limited Electronic fuel injection control for an internal combustion engine
US4266522A (en) * 1976-11-04 1981-05-12 Lucas Industries Limited Fuel injection systems
US4223643A (en) * 1977-02-21 1980-09-23 Robert Bosch Gmbh Method and apparatus for fuel mixture enrichment during acceleration
US4153014A (en) * 1977-03-17 1979-05-08 The Bendix Corporation Peripheral circuitry for single-point fuel injection
US4176625A (en) * 1977-04-20 1979-12-04 The Bendix Corporation Pulse time addition circuit for electronic fuel injection systems
US4184461A (en) * 1977-09-26 1980-01-22 The Bendix Corporation Acceleration enrichment for closed loop control systems
US4244023A (en) * 1978-02-27 1981-01-06 The Bendix Corporation Microprocessor-based engine control system with acceleration enrichment control
US4255789A (en) * 1978-02-27 1981-03-10 The Bendix Corporation Microprocessor-based electronic engine control system
US4245312A (en) * 1978-02-27 1981-01-13 The Bendix Corporation Electronic fuel injection compensation
EP0151832A1 (en) * 1979-05-17 1985-08-21 Abi Yhwh Life, Inc. Ignition and fuel control system for internal combustion engines
US4428349A (en) 1979-05-17 1984-01-31 Snow Thomas K Ignition and fuel control system for internal combustion engines
US4245605A (en) * 1979-06-27 1981-01-20 General Motors Corporation Acceleration enrichment for an engine fuel supply system
US4338813A (en) * 1980-09-02 1982-07-13 Motorola Inc. Electronic engine synchronization and timing apparatus
US4338903A (en) * 1980-09-02 1982-07-13 Motorola Inc. Electronic cylinder identification apparatus for synchronizing fuel injection
US4561405A (en) * 1981-12-31 1985-12-31 Orbital Engine Company Proprietary Limited Control of fuel injection apparatus for internal combustion engines
USRE33929E (en) * 1982-05-28 1992-05-19 Kwik Products International Corporation Central injection device for internal combustion engines
US4523571A (en) * 1982-06-16 1985-06-18 Honda Giken Kogyo Kabushiki Kaisha Fuel supply control method for internal combustion engines at acceleration
US4532908A (en) * 1982-09-24 1985-08-06 Robert Bosch Gmbh Control device for metering fuel in a supercharged internal combustion engine
US4562814A (en) * 1983-02-04 1986-01-07 Nissan Motor Company, Limited System and method for controlling fuel supply to an internal combustion engine
US4726342A (en) * 1986-06-30 1988-02-23 Kwik Products International Corp. Fuel-air ratio (lambda) correcting apparatus for a rotor-type carburetor for integral combustion engines
US4869850A (en) * 1986-06-30 1989-09-26 Kwik Products International Corporation Rotor-type carburetor apparatus and associated methods

Also Published As

Publication number Publication date
FR2017918A1 (enrdf_load_stackoverflow) 1970-05-22
DE1946266A1 (de) 1970-04-16
GB1272595A (en) 1972-05-03

Similar Documents

Publication Publication Date Title
US3661126A (en) Fuel injection systems
US3596640A (en) Fuel injection systems for internal combustion engines
US3483851A (en) Fuel injection control system
US3827409A (en) Fuel injection system for internal combustion engines
US3272187A (en) Fuel injection systems for internal combustion engines
US2980090A (en) Fuel injection system
US3724430A (en) Fuel injection regulator for internal combustion engines
US3032025A (en) Fuel supply system
US3742920A (en) Fuel injection systems
GB1196378A (en) Ignition and Fuel Injection Control for an Internal Combustion Engine
US3844263A (en) Supercharge-type fuel injection control system
ES398403A1 (es) Perfeccionamientos en sistemas de control de inyeccion de combustible para motores de combustion interna.
GB1261246A (en) Improvements in or relating to a fuel injection device for a compression-ignited internal combustion engine
GB884305A (en) Improvements in or relating to fuel injection systems for internal combustion engines
US3720191A (en) Acceleration enrichment circuitry for electronic fuel system
US2948273A (en) Fuel supply system
US3712275A (en) Fuel injection systems
US3749065A (en) Acceleration enrichment circuit for electronic fuel control systems
GB1258430A (enrdf_load_stackoverflow)
US3786788A (en) Fuel injection apparatus for internal combustion engine
GB1474075A (en) Compound ignition system for internal combustion engines
US3824967A (en) Electronic fuel injection system
GB1366370A (en) Fuel injection systems for internal combustion engines
US3513815A (en) Fuel injection systems for internal combustion engines
US3672345A (en) Electronic injection-controlling system for internal combustion engines

Legal Events

Date Code Title Description
AS Assignment

Owner name: LUCAS INDUSTRIES PUBLIC LIMITED COMPANY, GREAT KIN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:AE PLC;REEL/FRAME:004297/0061

Owner name: AE PLC CAWSTON HOUSE CAWSTON, RUGBY WARWICKSHIRE E

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:BRICO ENGINEERING LIMITED;REEL/FRAME:004297/0057