JPH0378943U

JPH0378943U -

Info

Publication number: JPH0378943U
Application number: JP13969889U
Authority: JP
Priority date: 1989-11-30
Filing date: 1989-11-30
Publication date: 1991-08-12

Description

[Brief explanation of drawings]

第１図はエンジンの全体構成図、第２図は燃料
カツト領域及び燃料復帰領域の説明図、第３図は
コントローラによる点火時期の制御を示すフロー
チヤート図、第４図は作動説明図である。１……エンジン、８……燃料噴射弁、１２……
点火プラグ、１３……点火コイル、１７……調整
手段、２０……コントローラ、２１……減速度合
検出手段、２２……移行時検出手段、２３……補
正手段。 Fig. 1 is an overall configuration diagram of the engine, Fig. 2 is an explanatory diagram of the fuel cut area and fuel return area, Fig. 3 is a flowchart showing the control of ignition timing by the controller, and Fig. 4 is an explanatory diagram of the operation. . 1...Engine, 8...Fuel injection valve, 12...
Spark plug, 13...Ignition coil, 17...Adjustment means, 20...Controller, 21...Deceleration amount detection means, 22...Transition detection means, 23...Correction means.

Claims

[Scope of utility model registration request]

In an engine that stops fuel supply when the operating state is in a preset fuel cut region during engine deceleration operation, an adjusting means for adjusting the ignition timing of the engine, and a deceleration amount detection that detects the deceleration amount during deceleration operation of the engine. means, transition detection means for detecting when the operating state of the engine shifts from the fuel cut region to a preset fuel return region, and when the transition detection means detects the time of transition to the fuel return region. , a correction for calculating the amount of retardation of the ignition timing according to the degree of deceleration of the engine detected by the amount of deceleration detection means, and correcting the ignition timing of the adjustment means so that the ignition timing is retarded by the amount of retardation; An ignition timing control device for an engine, comprising: means.