JPS57193772A - Ignition timing control system of internal-combustion engine - Google Patents

Ignition timing control system of internal-combustion engine

Info

Publication number
JPS57193772A
JPS57193772A JP56078071A JP7807181A JPS57193772A JP S57193772 A JPS57193772 A JP S57193772A JP 56078071 A JP56078071 A JP 56078071A JP 7807181 A JP7807181 A JP 7807181A JP S57193772 A JPS57193772 A JP S57193772A
Authority
JP
Japan
Prior art keywords
thetak
thetap
ignition timing
mbt
thetam
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.)
Pending
Application number
JP56078071A
Other languages
Japanese (ja)
Inventor
Takashi Shigematsu
Tomoyuki Watanabe
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.)
Toyota Motor Corp
Original Assignee
Toyota Motor Corp
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 Toyota Motor Corp filed Critical Toyota Motor Corp
Priority to JP56078071A priority Critical patent/JPS57193772A/en
Publication of JPS57193772A publication Critical patent/JPS57193772A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • F02P5/152—Digital data processing dependent on pinking
    • F02P5/1523—Digital data processing dependent on pinking with particular laws of return to advance, e.g. step by step, differing from the laws of retard
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electrical Control Of Ignition Timing (AREA)

Abstract

PURPOSE:To make responsiveness in ignition timing improvable, by setting up the first and second maps that determine the limit of knocking and MBT over the total range of a fixed engine parameter, with regard to an ignition timing control using a microcomputer. CONSTITUTION:A CPU8 inputs signals of a suction pressure 2, a rotation sensor 3, etc., and reads out values of a setting mapthetap, a MBT mapthetam and a knock mapthetak. These values are stored in a memory respectively the way as follows -thetap: Normal ignition timing to be set by suction pressure, thetam: Difference between MBT characteristic line and thetap, and thetak: Difference between knock limitation characteristic line and thetap as their individual contents. And, a smaller value between thetap+thetam and thetap+thetak in comparison is considered to be an actual ignition timing thetaig whereby maximum torque within the range of steady driving can be obtained. At this time, if knocking happens, it calculates an equation of DELTAthetak=thetak-thetaig, evaluating an estimation factor alphak, and then an equation of thetak+ thetak+alphakX constant thetafk is regarded as a new thetak. In addition, DELTAthetam is found with a MBT signal generated, the estimation factor alpham is calculated and thetam is substituted as well.
JP56078071A 1981-05-25 1981-05-25 Ignition timing control system of internal-combustion engine Pending JPS57193772A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56078071A JPS57193772A (en) 1981-05-25 1981-05-25 Ignition timing control system of internal-combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56078071A JPS57193772A (en) 1981-05-25 1981-05-25 Ignition timing control system of internal-combustion engine

Publications (1)

Publication Number Publication Date
JPS57193772A true JPS57193772A (en) 1982-11-29

Family

ID=13651605

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56078071A Pending JPS57193772A (en) 1981-05-25 1981-05-25 Ignition timing control system of internal-combustion engine

Country Status (1)

Country Link
JP (1) JPS57193772A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0576931U (en) * 1992-03-27 1993-10-19 日産車体株式会社 Parking brake device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54116525A (en) * 1978-03-02 1979-09-10 Nippon Denso Co Ltd Ignition timing device for internal combustion engine
JPS5578168A (en) * 1978-12-07 1980-06-12 Nippon Soken Inc Feedback type ignition time control device for internal combustion engine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54116525A (en) * 1978-03-02 1979-09-10 Nippon Denso Co Ltd Ignition timing device for internal combustion engine
JPS5578168A (en) * 1978-12-07 1980-06-12 Nippon Soken Inc Feedback type ignition time control device for internal combustion engine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0576931U (en) * 1992-03-27 1993-10-19 日産車体株式会社 Parking brake device

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