JPS557949A - Exhaust gas returning system in cylinder-number controlling engine - Google Patents

Exhaust gas returning system in cylinder-number controlling engine

Info

Publication number
JPS557949A
JPS557949A JP8047578A JP8047578A JPS557949A JP S557949 A JPS557949 A JP S557949A JP 8047578 A JP8047578 A JP 8047578A JP 8047578 A JP8047578 A JP 8047578A JP S557949 A JPS557949 A JP S557949A
Authority
JP
Japan
Prior art keywords
negative pressure
chamber
cylinder
exhaust gas
control valve
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
JP8047578A
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 JP8047578A priority Critical patent/JPS557949A/en
Publication of JPS557949A publication Critical patent/JPS557949A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To restrain the increase of NOX efficiently by promoting the signal negative pressure relatively to supply to an exhaust gas returning control valve at the time of cylinder-number controlling for enlarging the opening of the control valve.
CONSTITUTION: In this engine, for example, injection pulse signals to fuel injection valves 3aW3c are cut by a cylinder-number controlling circuit 2 at the time of a light load. Here, into a negative pressure operating chamber 20 of an exhaust gas returning control valve 12, a VC negative pressure diluted and controlled by the air is supplied through a negative pressure control device 21, which is composed of a negative pressure control chamber 26 separated by three diaphragms 22W24 connected with each other, a pressure chamber 27, an air chamber 28, and an exhaust pressure chamber 29. The pressure chamber 27 is connected to a negative pressure passage 45 through a three-way electromagnetic valve 41 to be excited and opened at the time of three cylinder operation, and thus, a control negative pressure P is relatively promoted for enlarging the opening of the above-written control valve 12.
COPYRIGHT: (C)1980,JPO&Japio
JP8047578A 1978-07-04 1978-07-04 Exhaust gas returning system in cylinder-number controlling engine Pending JPS557949A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8047578A JPS557949A (en) 1978-07-04 1978-07-04 Exhaust gas returning system in cylinder-number controlling engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8047578A JPS557949A (en) 1978-07-04 1978-07-04 Exhaust gas returning system in cylinder-number controlling engine

Publications (1)

Publication Number Publication Date
JPS557949A true JPS557949A (en) 1980-01-21

Family

ID=13719284

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8047578A Pending JPS557949A (en) 1978-07-04 1978-07-04 Exhaust gas returning system in cylinder-number controlling engine

Country Status (1)

Country Link
JP (1) JPS557949A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58108246U (en) * 1982-01-19 1983-07-23 三菱自動車工業株式会社 Exhaust gas recirculation deactivated engine
JP2008150969A (en) * 2006-12-14 2008-07-03 Yamaha Motor Co Ltd Internal combustion engine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58108246U (en) * 1982-01-19 1983-07-23 三菱自動車工業株式会社 Exhaust gas recirculation deactivated engine
JP2008150969A (en) * 2006-12-14 2008-07-03 Yamaha Motor Co Ltd Internal combustion engine

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