JPS6360045U

JPS6360045U -

Info

Publication number: JPS6360045U
Application number: JP15306886U
Authority: JP
Priority date: 1986-10-07
Filing date: 1986-10-07
Publication date: 1988-04-21

Description

[Brief explanation of drawings]

第１図は本考案の構成ブロツク図、第２図は本
考案の一実施例を示すシステム概略図、第３図は
同上実施例における燃料噴射量Ｔｉ設定制御を示
すフローチヤート、第４図は熱線式流量計の検出
精度の低下傾向を示すグラフである。１……フルスイツチ、２……熱線式流量計、３
……回転速度センサ、５……コントロールユニツ
ト、６……駆動回路、７……燃料噴射弁。 Fig. 1 is a configuration block diagram of the present invention, Fig. 2 is a system schematic diagram showing an embodiment of the present invention, Fig. 3 is a flowchart showing fuel injection amount Ti setting control in the same embodiment, and Fig. 4 is a It is a graph showing a decreasing trend in detection accuracy of a hot wire flowmeter. 1...Full switch, 2...Hot wire flow meter, 3
...Rotational speed sensor, 5...Control unit, 6...Drive circuit, 7...Fuel injection valve.

Claims

[Scope of utility model registration request]

an intake air flow rate detection means for detecting the intake air flow rate of the engine, which includes a temperature-sensitive resistor interposed in the intake passage of the engine; an engine rotation speed detection means for detecting the rotation speed of the engine; a basic fuel injection amount setting means for setting a basic fuel injection amount based on an intake air flow rate and an engine rotational speed; a fuel injection valve drive control means for driving and controlling a fuel injection valve according to the set basic fuel injection amount; In an electronically controlled fuel injection device for an internal combustion engine, the electronically controlled fuel injection device for an internal combustion engine includes a throttle valve opening detection means for detecting a predetermined opening of a throttle valve disposed in an intake passage; The basic fuel injection amount is set by the basic fuel injection amount setting means when the predetermined opening of the throttle valve is detected by the basic fuel injection amount storage means stored in advance according to the engine rotational speed and the throttle valve opening detection means. a first correction coefficient for the intake air flow rate at the predetermined opening degree of the throttle valve by comparing the basic fuel injection amount retrieved from the basic fuel injection amount storage means based on the engine rotation speed; a second correction coefficient for the intake air flow rate in an opening state of the throttle valve other than the predetermined opening degree based on the detected intake air flow rate and the set first correction coefficient; The second correction coefficient setting means and the intake air flow rate correction means for correcting the detected intake air flow rate based on the first or second correction coefficient selected according to the detected throttle valve opening degree are provided. Electronically controlled fuel injection system for internal combustion engines.