EP0241008A3 - Engine control system - Google Patents

Engine control system Download PDF

Info

Publication number
EP0241008A3
EP0241008A3 EP87105193A EP87105193A EP0241008A3 EP 0241008 A3 EP0241008 A3 EP 0241008A3 EP 87105193 A EP87105193 A EP 87105193A EP 87105193 A EP87105193 A EP 87105193A EP 0241008 A3 EP0241008 A3 EP 0241008A3
Authority
EP
European Patent Office
Prior art keywords
engine
engine speed
control unit
fuel supply
predetermined
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.)
Withdrawn
Application number
EP87105193A
Other languages
German (de)
French (fr)
Other versions
EP0241008A2 (en
Inventor
Kiyomi Morita
Junji Miyake
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Publication of EP0241008A2 publication Critical patent/EP0241008A2/en
Publication of EP0241008A3 publication Critical patent/EP0241008A3/en
Withdrawn legal-status Critical Current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
    • F02D41/32—Controlling fuel injection of the low pressure type
    • 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
    • F02D41/126—Introducing corrections for particular operating conditions for deceleration the fuel injection being cut-off transitional corrections at the end of the cut-off period
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
    • F02P5/00—Advancing or retarding ignition; Control therefor
    • F02P5/04—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions
    • F02P5/045—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions combined with electronic control of other engine functions, e.g. fuel injection
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
    • F02P5/00—Advancing or retarding ignition; Control therefor
    • F02P5/04—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions
    • F02P5/145—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions using electrical means
    • F02P5/15—Digital data processing
    • F02P5/1502—Digital data processing using one central computing unit
    • F02P5/1508—Digital data processing using one central computing unit with particular means during idling

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)
  • Electrical Control Of Ignition Timing (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)

Abstract

An engine controlling system has an electri­ cal control unit (32) operative during an engine de­ celeration to deenergize an electrically actuated fuel injector (16) to interrupt fuel supply to the engine when a throttle valve (14) is in closed idle position and the engine speed is above a first predetermined r.p.m. level. When it is detected by the control unit (32) that the throttle valve (14) is still in the idle position and the engine speed has been lowered to a second predetermined r.p.m. level lower than the first predetermined level, the control unit operates to resume the fuel supply at a rate increased compared with engine intake air flow rate and engine speed both detec­ ted at this time, and, simultaneously, retard the ignition timing whereby the engine speed smoothly and gradually varies after the resumption of fuel supply.
EP87105193A 1986-04-09 1987-04-08 Engine control system Withdrawn EP0241008A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP61081650A JPS62240452A (en) 1986-04-09 1986-04-09 Fuel controller
JP81650/86 1986-04-09

Publications (2)

Publication Number Publication Date
EP0241008A2 EP0241008A2 (en) 1987-10-14
EP0241008A3 true EP0241008A3 (en) 1987-11-19

Family

ID=13752209

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87105193A Withdrawn EP0241008A3 (en) 1986-04-09 1987-04-08 Engine control system

Country Status (3)

Country Link
EP (1) EP0241008A3 (en)
JP (1) JPS62240452A (en)
KR (1) KR870010297A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4327882C1 (en) * 1993-08-19 1994-09-29 Audi Ag Secondary air reserve system
JP4466864B2 (en) * 2005-09-21 2010-05-26 三菱自動車工業株式会社 Control device for internal combustion engine
JP4597156B2 (en) 2007-03-19 2010-12-15 トヨタ自動車株式会社 Control device for torque demand type internal combustion engine
JP4548486B2 (en) 2008-01-09 2010-09-22 トヨタ自動車株式会社 Control device for internal combustion engine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2033615A (en) * 1978-09-29 1980-05-21 Hitachi Ltd Apparatus and method for controlling fuel injection and ignition timing in internal combustion engines
GB2060063A (en) * 1979-09-28 1981-04-29 Nissan Motor Spark timing control system
EP0055482A2 (en) * 1980-12-29 1982-07-07 Hitachi, Ltd. Fuel injection apparatus for internal combustion engines
US4452212A (en) * 1981-01-26 1984-06-05 Nissan Motor Co., Ltd. Fuel supply control system for an internal combustion engine

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54145819A (en) * 1978-05-04 1979-11-14 Nippon Denso Co Ltd Engine control
JPS5746032A (en) * 1980-09-03 1982-03-16 Toyota Motor Corp Method of control right after stoppage of fuel cut-off
JPS57188736A (en) * 1981-05-08 1982-11-19 Honda Motor Co Ltd Fuel supply controller for internal combustion engine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2033615A (en) * 1978-09-29 1980-05-21 Hitachi Ltd Apparatus and method for controlling fuel injection and ignition timing in internal combustion engines
GB2060063A (en) * 1979-09-28 1981-04-29 Nissan Motor Spark timing control system
EP0055482A2 (en) * 1980-12-29 1982-07-07 Hitachi, Ltd. Fuel injection apparatus for internal combustion engines
US4452212A (en) * 1981-01-26 1984-06-05 Nissan Motor Co., Ltd. Fuel supply control system for an internal combustion engine

Also Published As

Publication number Publication date
KR870010297A (en) 1987-11-30
EP0241008A2 (en) 1987-10-14
JPS62240452A (en) 1987-10-21

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Inventor name: MORITA, KIYOMI

Inventor name: MIYAKE, JUNJI