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WO2000005495A1 - Commande pour moteur a combustion interne - Google Patents

Commande pour moteur a combustion interne Download PDF

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Publication number
WO2000005495A1
WO2000005495A1 PCT/GB1998/002157 GB9802157W WO0005495A1 WO 2000005495 A1 WO2000005495 A1 WO 2000005495A1 GB 9802157 W GB9802157 W GB 9802157W WO 0005495 A1 WO0005495 A1 WO 0005495A1
Authority
WO
WIPO (PCT)
Prior art keywords
engine
fuel
control means
control
speed
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.)
Ceased
Application number
PCT/GB1998/002157
Other languages
English (en)
Inventor
Terrance Ian Jupe
Peter Roy Coleman
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to PCT/GB1998/002157 priority Critical patent/WO2000005495A1/fr
Priority to AU84521/98A priority patent/AU8452198A/en
Publication of WO2000005495A1 publication Critical patent/WO2000005495A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • F02D41/30—Controlling fuel injection
    • F02D41/38—Controlling fuel injection of the high pressure type
    • F02D41/40—Controlling fuel injection of the high pressure type with means for controlling injection timing or duration
    • F02D41/406—Electrically controlling a diesel injection pump
    • 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
    • F02D41/12—Introducing corrections for particular operating conditions for deceleration
    • F02D41/123—Introducing corrections for particular operating conditions for deceleration the fuel injection being cut-off
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/40—Engine management systems

Definitions

  • This invention relates to internal combustion engines, particularly but not exclusively diesel and other compression ignition engines and/or gas fuelled or petrol engines using fuel injection or carburettors in road vehicles.
  • the invention in its preferred form, is especially suited to light vehicle diesel engines as fitted in cars, small vans, and other light goods vehicles and which may use a rotary or m line fuel distribution pump.
  • Japanese Abstract Accession No 570104816 shows an engine revolution detection circuit adapted to generate signals corresponding to engine revolution by shaping and dividing signals from an alternator which are input to a fuel consumption circuit, in order to display fuel consumption level.
  • An object of the invention is to provide internal combustion engine control which is improved in at least some respect or to provide improved control and monitoring of engine performance with substantial savings in fuel consumption, reduction in atmospheric pollution and increase in general efficiency and economy
  • an internal combustion engine automatic control and/or monitoring system including a) a pick-up device to be operatively associated with an alternator or other electric generator or flywheel continuously driven by the engine in use to respond to emissions from said generator or flywheel in use and provide a read-out of the running performance of the generator b) an electronic processing unit for receiving said read-out and converting it to a regulating signal representing engine running speed. c) one or more control or monitoring devices responsive to the regulating signal and programmed to control and/or provide an indication of engine performance, and d) a control device for automatically regulating fuel input to the engine in use.
  • the pick-up device is not directly connected to the generator or electrical output circuits therefrom but includes a coil to be mounted on or adjacent to the generator whereby a secondary signal is induced
  • the control device may automatically regulate fuel input to the engine tor example by controlling operation of a fuel feed or metering device such as an injection or distribution pump of a diesel or similar engine or, possibly, of a petrol or gas fuelled engine having fuel injection; or a pump or other device feeding fuel to a carburettor.
  • Control may include stopping the pump or other tuel teed device so that no fuel is fed when the engine does not require it e g when a vehicle is running with the throttle fully closed as on de-acceleration, running downhill, during gear changes, or du ⁇ ng braking using engine compression
  • the system may further include an engine performance monitoring device responsive to the regulating signal for example an engine revolution counter.
  • the control device may be or include an engine speed limiter or governor e.g. cutting off or reducing fuel feed and/or closing or limiting opening of the throttle when engine speed exceeds a preset limit or proportionately to speed increase or attempted speed increase beyond a preset
  • Figure 1 is a block diagram of a diesel engine control system
  • Figure 2 is a circuit diagram of the control system.
  • This example is applied to a vehicle diesel or other compression ignition engine as used on light goods vehicles and cars.
  • a rotary or in line distribution pump which feeds fuel to the engine cylinder injectors, runs continuously whenever the engine is running, i.e. fuel in greater or lesser amounts is always being delivered to the engine even though its power is not being utilised as on de-acceleration or other occasions when the throttle is closed during motion of the vehicle as referred to above.
  • the control system comprises a pick-up induction coil 10, forming part of a primary sensing circuit 12, which is operatively mounted in close proximity to the engine driven alternator 8 so that, whenever the engine is running, pulses of current are induced in circuit 12 at the same frequency as that of the alternator output current which is, in turn, a function of engine running speed.
  • Coil 10 is potted in resin for durability and is provided with a band or clip for ease of mounting on the alternator casing.
  • An electronic microprocessor unit 14 of the system connected in circuit 12, responds to said induced pulses to provide a regulating signal which is a function of engine speed.
  • This signal is passed to an electronically operated control device 16 of the system which, in turn, through suitable relays and switching, controls operation of a rotary or in line fuel distribution pump 18 of the engine.
  • Control device 16 is programmed so that it automatically causes pump 18 to cease delivering fuel to the engine on de-acceleration or other throttle closed running conditions as referred to above. Delivery of fuel is restarted immediately the throttle is opened again and there is also a bypass provision for keeping the engine running at tickover when required, e.g. when the vehicle is stationary.
  • the fuel feed distribution pump fitted to cars and other light diesel vehicles is usually provided with an electrically actuated solenoid shut-off valve 20 in the fuel feed within the pump turned on and off by the "ignition" key. the valve being closed except when the key is inserted and turned “on” to start and run the engine.
  • Solenoid valve 20 is conveniently used to effect fuel shut off under the control of device 16, the latter being connected in series between the "ignition” key switch (not shown) and the line 22 leading to valve 20.
  • the "ignition" key switch not shown
  • Switch 24 is also a switch 24 controlled in response to throttle movement or position.
  • Switch 24 is conveniently comprised in a threaded bolt which is substituted for the normal adjustable stop bolt used to set a throttle plunger of pump 18 for adjusting tick-over. This again simplifies installation.
  • the arrangement is such that if engine speed drops below a pre-set minimum, (e.g. 1100 r.p.m) i.e. nears the "tick-over" condition as when the vehicle is held up in traffic, solenoid valve will be opened to keep the engine running; the shut down action of control unit 16 being overridden in this condition. But if the throttle is closed while the engine continues to turn over at a higher speed than tickover because the vehicle is in motion, eg on deceleration or when coasting downhill, the fuel feed will be shut off as above.
  • a pre-set minimum e.g. 1100 r.p.m
  • the system does not affect the running of the vehicle and its engine except as indicated above.
  • the system is readily installed and is particularly convenient for fitting to existing engines and vehicles although it is also contemplated that it may be provided as part of the engine installation when first manufactured or during original assembly of a vehicle
  • the system may also provide a readout to the operator of the vehicle, or to a recording device such as a tachograph or like of engine speed and other operating conditions, for example the system may be connected to an analogue or digital revolution counter
  • Figure 2 is one example of the electronic circuitry which can be employed in the device but it is to be understood that modi cations. variations, or alternative circuit arrangements may be used
  • a very important aspect of the present invention is the control of fuel input to the engine utilising any signal indicative of engine speed not necessarily taken from the alternator or other generator
  • a control signal may conveniently be taken from an engine flywheel, more particularly since some vehicle control systems already utilise flywheel sensors and such an already existing flywheel sensor could be utilised for providing the control signal (thereby reducing costs and easing installation of the control system to an existing engine).
  • a signal indicative of engine speed could be drawn from another source such as the engine crankshaft or any convenient part of the engine or attachment thereto.
  • control means for controlling the amount of fuel input to an internal combustion engine, said control means being arranged, in use, to be responsive to a signal indicative of engine speed, to control fuel input to the engine and characterised in that the control means is adapted to automatically substantially shut off the supply of fuel to the engine whenever fuel is not required e,g, on deceleration.
  • the control means may be arranged to evaluate throttle movement or position in relation to engine speed in order to substantially shut off the supply of fuel to the engine whenever fuel is not required.
  • control means will include an electronic processor or processing unit.
  • the control means may include a by-pass provision for keeping the engine running at tick over when required.
  • an existing shut off solenoid valve for a fuel delivery pump (usually a rotary or in line distribution pump) connected in an ignition circuit to the engine is utilised to substantially shut off the supply of fuel to the engine, said solenoid valve being located in the fuel feed within the pump.
  • the control means may be adapted to provide speed limiting or governing of the engine.
  • the control means may have an electrical pick up device or sensor including a coil to be mounted on or adjacent to the generator whereby a secondary signal is induced in said coil.
  • a method a method of controlling the amount of fuel input to an internal combustion engine (installed in a vehicle), said method comprising obtaining signal information indicative of engine speed in order to vary the fuel input to the engine characterised in that the supply of fuel to the engine is automatically substantially shut off whenever fuel is not required e.g. on deceleration.
  • the method may include evaluating the signal information indicative of engine speed in relation to throttle movement or position to substantially shut off the supply of fuel to the engine wherever fuel is not required and/or including keeping the engine running at tickover when required and/or including speed limiting or governing of the engine.
  • an internal combustion engine automatic control and/or monitoring system including: a) a pick up device to be operatively associated with an alternator or other electric generator or member (e.g. flywheel) continuously driven by the engine in use to respond to emissions from said generator/or member in use and provide a read-out of the running performance of the generator,
  • a pick up device to be operatively associated with an alternator or other electric generator or member (e.g. flywheel) continuously driven by the engine in use to respond to emissions from said generator/or member in use and provide a read-out of the running performance of the generator
  • an electronic processing unit for receiving said read-out and converting it to a regulating signal representing engine running speed
  • a control or monitoring devices responsive to the regulating signal and programmed to control and/or provide an indication of engine performance
  • a control device for automatically regulating fuel input to the engine in use, wherein said fuel input regulating device operatively controls output of a fuel distribution or feed pump of the engine and wherein the regulating device operates to cease fuel input when the engine throttle is fully closed in use, at least while the engine is running at above a predetermined minimum speed.
  • control means could be replaced by "control device” or “electronic control”; the term “shut off” could be replaced by “switch off” or “substantially reduced”.
  • control means could be replaced by "control device” or “electronic control”; the term “shut off” could be replaced by "switch off” or “substantially reduced”.
  • individual features, method or functions related to the control means or fuel injection shut off mechanism might be individually patentably inventive.
  • any disclosure in this specification of a range for a variable or parameter shall be taken to include a disclosure of any selectable or derivable sub-range within that range and shall be taken to include a disclosure of any value for the variable or parameter lying within or at an end of the range.
  • the singular may include the plural or vice versa.
  • control means adapted to substantially shut off the supply of fuel to an engine in situations where fuel is not required e g deceleration
  • an internal combustion engine automatic control and/or monitoring system including
  • an electrical pick-up device to be operatively associated with an alternator or other electric generator continuously driven by the engine m use to respond to electrical emissions from said generator in use and provide a read-out of the running performance of the generator
  • control or monitoring devices responsive to the regulating signal and programmed to control and/or provide an indication of engine performance

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)

Abstract

L'invention concerne un système de commande automatique permettant de réguler ou de contrôler le fonctionnement d'un moteur automobile à combustion interne, ce système comprenant un dispositif de détection, généralement une bobine d'induction (10), destiné à être monté à proximité de l'alternateur (8) ou de tout autre générateur entraîné par le moteur, afin de fournir un signal électrique pulsé dont la fréquence est une fonction du régime du moteur. Une unité de traitement électronique (14) répond à ce signal afin d'actionner un ou plusieurs dispositifs de commande ou de contrôle, par exemple un dispositif (16) destiné à régir le fonctionnement d'une pompe d'alimentation ou de distribution de diesel ou de tout autre carburant (18), de manière à couper l'arrivée de carburant si nécessaire, par exemple en cas de marche en roue libre avec le papillon des gaz fermé. D'autres dispositifs régis par cette unité peuvent comprendre un tachymètre ou un contrôlographe.
PCT/GB1998/002157 1998-07-20 1998-07-20 Commande pour moteur a combustion interne Ceased WO2000005495A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/GB1998/002157 WO2000005495A1 (fr) 1998-07-20 1998-07-20 Commande pour moteur a combustion interne
AU84521/98A AU8452198A (en) 1998-07-20 1998-07-20 Internal combustion engine control

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/GB1998/002157 WO2000005495A1 (fr) 1998-07-20 1998-07-20 Commande pour moteur a combustion interne

Publications (1)

Publication Number Publication Date
WO2000005495A1 true WO2000005495A1 (fr) 2000-02-03

Family

ID=10826279

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1998/002157 Ceased WO2000005495A1 (fr) 1998-07-20 1998-07-20 Commande pour moteur a combustion interne

Country Status (2)

Country Link
AU (1) AU8452198A (fr)
WO (1) WO2000005495A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1433939A2 (fr) * 2002-12-20 2004-06-30 Nissan Motor Co., Ltd. Dispositif de commande d'injection de carburant pour moteur à combustion interne
WO2013086591A1 (fr) * 2011-12-15 2013-06-20 Vale Soluções Em Energia S.A. - Vse Procédé de contrôle d'un dispositif de génération d'énergie électrique contenant un moteur à combustion interne avec allumage par étincelle accouplé à un alternateur

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2060083A (en) * 1979-09-18 1981-04-29 Lucas Industries Ltd Fuel injection Pump
JPS57104816A (en) 1980-12-19 1982-06-30 Nippon Soken Inc Fuel consumption level measuring apparatus for diesel engine
US4388900A (en) * 1979-12-07 1983-06-21 Hitachi, Ltd. Automatic stopping device for diesel engine
JPS61124870A (ja) * 1984-11-21 1986-06-12 Automob Antipollut & Saf Res Center デイ−ゼル車のエンジン回転数検出装置
US4597369A (en) * 1981-05-25 1986-07-01 Nissan Motor Company, Limited Fuel cutoff apparatus for fuel injection pump for diesel engine
US4732034A (en) * 1984-02-29 1988-03-22 Stewart-Warner Corporation Tachometer kit with alternator pick up
US5617819A (en) 1993-12-30 1997-04-08 Astroflex, Inc. Remote starting system for a vehicle having a diesel engine
GB2321311A (en) * 1997-01-16 1998-07-22 Terrance Ian Jupe Internal combustion engine control

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2060083A (en) * 1979-09-18 1981-04-29 Lucas Industries Ltd Fuel injection Pump
US4388900A (en) * 1979-12-07 1983-06-21 Hitachi, Ltd. Automatic stopping device for diesel engine
JPS57104816A (en) 1980-12-19 1982-06-30 Nippon Soken Inc Fuel consumption level measuring apparatus for diesel engine
US4597369A (en) * 1981-05-25 1986-07-01 Nissan Motor Company, Limited Fuel cutoff apparatus for fuel injection pump for diesel engine
US4732034A (en) * 1984-02-29 1988-03-22 Stewart-Warner Corporation Tachometer kit with alternator pick up
JPS61124870A (ja) * 1984-11-21 1986-06-12 Automob Antipollut & Saf Res Center デイ−ゼル車のエンジン回転数検出装置
US5617819A (en) 1993-12-30 1997-04-08 Astroflex, Inc. Remote starting system for a vehicle having a diesel engine
GB2321311A (en) * 1997-01-16 1998-07-22 Terrance Ian Jupe Internal combustion engine control

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 010, no. 312 (P - 509) 23 October 1986 (1986-10-23) *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1433939A2 (fr) * 2002-12-20 2004-06-30 Nissan Motor Co., Ltd. Dispositif de commande d'injection de carburant pour moteur à combustion interne
WO2013086591A1 (fr) * 2011-12-15 2013-06-20 Vale Soluções Em Energia S.A. - Vse Procédé de contrôle d'un dispositif de génération d'énergie électrique contenant un moteur à combustion interne avec allumage par étincelle accouplé à un alternateur

Also Published As

Publication number Publication date
AU8452198A (en) 2000-02-14

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