JPH0169153U

JPH0169153U -

Info

Publication number: JPH0169153U
Application number: JP1987163144U
Authority: JP
Priority date: 1987-10-27
Filing date: 1987-10-27
Publication date: 1989-05-08

Description

[Brief explanation of the drawing]

第１図は本考案の構成を示す機能ブロツク図、
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吸入空気流量検出
手段としての熱線式流量計の構成を示す回路図、
第４図は同上実施例における燃料噴射制御を示す
フローチヤート、第５図は従来の問題点を説明す
るためのタイムチヤートである。１……機関、２……吸気通路、３……吸気絞り
弁、４……吸気絞り弁開度センサ、５……回転速
度センサ、６……コントロールユニツト、７……
燃料噴射弁、８……熱線式流量計、９……水温セ
ンサ、１０……補助空気通路、１１……アイドル
スピード制御弁、１２……イグニツシヨンスイツ
チ。 Figure 1 is a functional block diagram showing the configuration of the present invention.
FIG. 2 is a system schematic diagram showing one embodiment of the present invention, and FIG. 3 is a circuit diagram showing the configuration of a hot wire flowmeter as an intake air flow rate detection means in the same embodiment.
FIG. 4 is a flowchart showing fuel injection control in the same embodiment, and FIG. 5 is a time chart for explaining the conventional problems. DESCRIPTION OF SYMBOLS 1... Engine, 2... Intake passage, 3... Intake throttle valve, 4... Intake throttle valve opening sensor, 5... Rotational speed sensor, 6... Control unit, 7...
Fuel injection valve, 8... hot wire flow meter, 9... water temperature sensor, 10... auxiliary air passage, 11... idle speed control valve, 12... ignition switch.

Claims

[Scope of utility model registration request]

A fuel injection amount is set based on an intake air flow rate detection means that is installed in an intake passage of the engine and detects the intake air flow rate of the engine, and an engine operating state that includes at least the intake air flow rate detected by the intake air flow rate detection means. In an electronically controlled fuel injection system for an internal combustion engine, which includes a fuel injection amount setting means and a fuel injection control means for driving and controlling the fuel injection means according to the set fuel injection amount, the ignition switch is turned on. an ignition on time detection means for detecting the elapsed time since the start of the engine intake passage; an opening area parameter detection means for detecting a parameter related to the effective opening area of the engine intake passage; and the parameter detected by the opening area parameter detection means. an initial fuel injection amount setting means for setting a fuel injection amount based on an engine operating state that does not include the intake air flow rate detected by the intake air flow rate detection means; Initial fuel for causing the fuel injection control means to perform injection control in accordance with the fuel injection amount set by the initial fuel injection amount setting means, giving priority to the fuel injection amount setting means when the elapsed time is within a predetermined time. An electronically controlled fuel injection device for an internal combustion engine, comprising: injection amount switching means.