JPH0363775U

JPH0363775U -

Info

Publication number: JPH0363775U
Application number: JP12573189U
Authority: JP
Priority date: 1989-10-26
Filing date: 1989-10-26
Publication date: 1991-06-21

Description

[Brief explanation of the drawing]

図面は本考案の実施例を示すもので、第１図は
自動車用エンジンとその点火時期制御装置の全体
構成図、第２図は燃料タンクに設けた揮発性検知
センサの縦断面図、第３図は点火時期制御のフロ
ーチヤート、第４図は揮発性の特性図、第５図は
基本点火時期の特性図、第６図は揮発性補正量の
特性図、第７図は加速補正量の特性図、第８図は
高負荷補正量の特性図、第９図は点火時期などの
タイムチヤートである。Ｅ……エンジン、２１……エアフローメータ、
２９……クランク角センサ、２８……ノツクセン
サ、３１……揮発性検知センサ。 The drawings show an embodiment of the present invention, and Fig. 1 is an overall configuration diagram of an automobile engine and its ignition timing control device, Fig. 2 is a vertical cross-sectional view of a volatility detection sensor installed in a fuel tank, and Fig. 3 is a longitudinal sectional view of a volatility detection sensor installed in a fuel tank. The figure is a flowchart of ignition timing control, Figure 4 is a characteristic diagram of volatility, Figure 5 is a characteristic diagram of basic ignition timing, Figure 6 is a characteristic diagram of volatility correction amount, and Figure 7 is a characteristic diagram of acceleration correction amount. The characteristic diagram, FIG. 8 is a characteristic diagram of high load correction amount, and FIG. 9 is a time chart of ignition timing, etc. E... Engine, 21... Air flow meter,
29... Crank angle sensor, 28... Knock sensor, 31... Volatility detection sensor.

Claims

[Claims for Utility Model Registration] Volatility detection means that directly or indirectly detects the volatility of fuel, and based on the output of the volatility detection means, the lower the volatility, the more the ignition timing is corrected to the retarded side. An ignition timing control device for an engine, comprising an ignition timing correction means for detecting an acceleration state of the engine, and an ignition timing correction means for retarding the ignition timing during acceleration in response to an output from the acceleration detection means. 1. An ignition timing control device for an engine, comprising: retard correction limiting means for limiting correction to the side.