JPS6015941U

JPS6015941U - cylinder number control engine

Info

Publication number: JPS6015941U
Application number: JP10752983U
Authority: JP
Inventors: 亀ケ谷　茂; 石澤　静雄; 敬士藤井
Original assignee: 日産自動車株式会社
Priority date: 1983-07-11
Filing date: 1983-07-11
Publication date: 1985-02-02

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図は従来装置の構成断面図、第２図、第３図はその
気筒数切換タイミングを示す説明図とトルクショックの
発生状態を示すグラフ、第４図は本考案の実施例を示す
制御ブロック図、第５図はその気筒数切換時のタイミン
グチャート図、第６図は同じくフローチャート図、第７
図は本考案の他の実施例のタイミングチャート図である
。１・・・絞弁、３・・・休止側吸気通路、４・・・稼動
側吸気通路、８・・・エアフローメータ、９・・・絞弁
開度センサ、１１・・・遮断弁、１２・・・新気供給通
路、１３・・・供給弁、２５・・・制御装置、２８．２
９・・・クランク角センサ。Fig. 1 is a sectional view of the configuration of the conventional device, Figs. 2 and 3 are explanatory diagrams showing the timing of switching the number of cylinders and graphs showing the state of occurrence of torque shock, and Fig. 4 is a control showing an embodiment of the present invention. The block diagram, Fig. 5 is a timing chart when changing the number of cylinders, Fig. 6 is a flow chart, and Fig. 7 is a timing chart when changing the number of cylinders.
The figure is a timing chart diagram of another embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Throttle valve, 3... Inactive side intake passage, 4... Operating side intake passage, 8... Air flow meter, 9... Throttle valve opening sensor, 11... Shutoff valve, 12 ... Fresh air supply passage, 13 ... Supply valve, 25 ... Control device, 28.2
9...Crank angle sensor.

Claims

[Scope of utility model registration request]

It is equipped with a dormant cylinder that stops operating when the fuel supply from the fuel injection valve is cut off when the engine is under light load, and an active cylinder that is constantly supplied with fuel and continues to operate. a cutoff valve that divides the intake passage from the middle in response to the above, and closes the idle side intake passage when the operating body is stopped;
Similarly, in a multi-cylinder engine that is provided with a supply valve that supplies fresh air at approximately atmospheric pressure downstream of the cutoff valve when the engine is inactive, when the operation of the cylinder on the inactive side is stopped and resumed, the predetermined injection of the fuel injection valve is performed. A control means is provided to cut off and restart fuel supply from the fuel injection valve at a predetermined time in synchronization with the injection timing, and to open and close the cutoff valve and the supply valve at a predetermined time in synchronization with the injection timing. Features a cylinder number control engine.