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JPS57168041A - Engine idle rpm control device - Google Patents

Engine idle rpm control device

Info

Publication number
JPS57168041A
JPS57168041A JP56054073A JP5407381A JPS57168041A JP S57168041 A JPS57168041 A JP S57168041A JP 56054073 A JP56054073 A JP 56054073A JP 5407381 A JP5407381 A JP 5407381A JP S57168041 A JPS57168041 A JP S57168041A
Authority
JP
Japan
Prior art keywords
rpm
idle
open
pumping loss
reflux
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.)
Granted
Application number
JP56054073A
Other languages
Japanese (ja)
Other versions
JPH0348330B2 (en
Inventor
Asao Tadokoro
Haruo Okimoto
Ikuo Matsuda
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.)
Mazda Motor Corp
Original Assignee
Mazda Motor Corp
Toyo Kogyo Co 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 Mazda Motor Corp, Toyo Kogyo Co Ltd filed Critical Mazda Motor Corp
Priority to JP56054073A priority Critical patent/JPS57168041A/en
Publication of JPS57168041A publication Critical patent/JPS57168041A/en
Publication of JPH0348330B2 publication Critical patent/JPH0348330B2/ja
Granted 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
    • F02D13/00—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
    • F02D13/02—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation
    • F02D13/0223—Variable control of the intake valves only
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D13/00—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
    • F02D13/02—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation
    • F02D13/0257—Independent control of two or more intake or exhaust valves respectively, i.e. one of two intake valves remains closed or is opened partially while the other is fully opened
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D13/00—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
    • F02D13/02—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation
    • F02D13/0276—Actuation of an additional valve for a special application, e.g. for decompression, exhaust gas recirculation or cylinder scavenging
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B2275/00—Other engines, components or details, not provided for in other groups of this subclass
    • F02B2275/18—DOHC [Double overhead camshaft]
    • 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
    • Y02T10/12—Improving ICE efficiencies

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)

Abstract

PURPOSE:To allow a proper idle operation condition to be maintained in an engine to reduce pumping loss during its idle operation, by decreasing the reducing quantity when the idle RPM is reducing and increasing it when idle RPM is increasing. CONSTITUTION:When the idle RPM is kept in the predetermined value or more, pumping loss decreasing function will be actuated by open and close of the intake reflux valve 11. If the number of revolution is reduced to less than the predetermined value under this condition, the RPM signal inputted through the gate 16 to the comparator 18 drops below the set voltage, and the actuator 20 operates in accordance with the output signal passing through the integral circuit 19, and the opening of the open-close valve 12 installed in the suction air reflux passage 10 is reduced. Thus, the reflux of the intake mixture in compression stroke is restricted and the quantity of pumping loss decreases. And if the RPM exceeds the set value, the open-close valve 12 will be opened. In cases other than idling, the RPM detection signal will be shut off at the gate 16.
JP56054073A 1981-04-09 1981-04-09 Engine idle rpm control device Granted JPS57168041A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56054073A JPS57168041A (en) 1981-04-09 1981-04-09 Engine idle rpm control device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56054073A JPS57168041A (en) 1981-04-09 1981-04-09 Engine idle rpm control device

Publications (2)

Publication Number Publication Date
JPS57168041A true JPS57168041A (en) 1982-10-16
JPH0348330B2 JPH0348330B2 (en) 1991-07-24

Family

ID=12960439

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56054073A Granted JPS57168041A (en) 1981-04-09 1981-04-09 Engine idle rpm control device

Country Status (1)

Country Link
JP (1) JPS57168041A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6375314A (en) * 1986-09-16 1988-04-05 Mazda Motor Corp Intake control device of engine
KR100428105B1 (en) * 2000-12-26 2004-04-30 현대자동차주식회사 Starting supporting apparatus for bus

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5550162A (en) * 1978-10-02 1980-04-11 Wellcome Found Method and device for testing agglutination of platelets
JPS5569715A (en) * 1978-11-21 1980-05-26 Nissan Motor Co Ltd Spark-ignition type internal combustion engine
JPS5614815A (en) * 1979-07-18 1981-02-13 Mitsubishi Motors Corp Engine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5550162A (en) * 1978-10-02 1980-04-11 Wellcome Found Method and device for testing agglutination of platelets
JPS5569715A (en) * 1978-11-21 1980-05-26 Nissan Motor Co Ltd Spark-ignition type internal combustion engine
JPS5614815A (en) * 1979-07-18 1981-02-13 Mitsubishi Motors Corp Engine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6375314A (en) * 1986-09-16 1988-04-05 Mazda Motor Corp Intake control device of engine
KR100428105B1 (en) * 2000-12-26 2004-04-30 현대자동차주식회사 Starting supporting apparatus for bus

Also Published As

Publication number Publication date
JPH0348330B2 (en) 1991-07-24

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