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JPS5566637A - Internal combustion engine capable of controlling number of operating cylinders - Google Patents

Internal combustion engine capable of controlling number of operating cylinders

Info

Publication number
JPS5566637A
JPS5566637A JP14079678A JP14079678A JPS5566637A JP S5566637 A JPS5566637 A JP S5566637A JP 14079678 A JP14079678 A JP 14079678A JP 14079678 A JP14079678 A JP 14079678A JP S5566637 A JPS5566637 A JP S5566637A
Authority
JP
Japan
Prior art keywords
operating cylinders
vacuum
valve
passage
engine
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
JP14079678A
Other languages
Japanese (ja)
Inventor
Toshiaki Tanaka
Yukihiro Eto
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.)
Nissan Motor Co Ltd
Original Assignee
Nissan Motor 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 Nissan Motor Co Ltd filed Critical Nissan Motor Co Ltd
Priority to JP14079678A priority Critical patent/JPS5566637A/en
Publication of JPS5566637A publication Critical patent/JPS5566637A/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
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D17/00—Controlling engines by cutting out individual cylinders; Rendering engines inoperative or idling
    • F02D17/02—Cutting-out

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)

Abstract

PURPOSE:To provide an internal combustion engine, which is designed such that air instead of exhaust gas is introduced into the passage communicated to non-operating cylinders, during low-load operation of engine when difference of suction pressure in the passage communicated to non-operating cylinders and the passage communicated to normally-operating cylinders becomes considerably great, whereby it is enabled to prevent degradation of engine performance due to leakage of exhaust gas to the normally-operating cylinders. CONSTITUTION:During low-load operation of engine, vacuum switch 38 is turned on and three- way electromagnetic valves 36, 37 are both energized. One electromagnetic valve 36 closes atmosopheric port 36c and communicates ports 36a and 36b with each other, so that vacuum is acted in vacuum chamber 25 of vacuum-responsive valve 22, thus opening the valve 22 to its full extent. The other electromagnetic valve 37, on the other hand, closes port 37a and communicates ports 37c and 37b with each other, so that atmospheric pressure is acted in vacuum chamber 27 of vacuum-responsive valve 23, thus fully closing the valve 23. With such an arrangement, air instead of exhaust gas is introduced into passage 8 communicated to non-operating cylinders and pressure in the passage 8 is kept at atmospheric pressure, so that pumping loss can be avoided.
JP14079678A 1978-11-15 1978-11-15 Internal combustion engine capable of controlling number of operating cylinders Pending JPS5566637A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14079678A JPS5566637A (en) 1978-11-15 1978-11-15 Internal combustion engine capable of controlling number of operating cylinders

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14079678A JPS5566637A (en) 1978-11-15 1978-11-15 Internal combustion engine capable of controlling number of operating cylinders

Publications (1)

Publication Number Publication Date
JPS5566637A true JPS5566637A (en) 1980-05-20

Family

ID=15276933

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14079678A Pending JPS5566637A (en) 1978-11-15 1978-11-15 Internal combustion engine capable of controlling number of operating cylinders

Country Status (1)

Country Link
JP (1) JPS5566637A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4304208A (en) * 1979-03-26 1981-12-08 Nissan Motor Company, Limited Internal combustion engine
US4320726A (en) * 1979-03-16 1982-03-23 Nissan Motor Company, Limited Internal combustion engine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4320726A (en) * 1979-03-16 1982-03-23 Nissan Motor Company, Limited Internal combustion engine
US4304208A (en) * 1979-03-26 1981-12-08 Nissan Motor Company, Limited Internal combustion engine

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