JPS6336640U

JPS6336640U -

Info

Publication number: JPS6336640U
Application number: JP12962086U
Authority: JP
Priority date: 1986-08-27
Filing date: 1986-08-27
Publication date: 1988-03-09

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図、第
３図及び第４図は制御内容を示すフローチヤート
、第５図はマツプを示す図、第６図はタイムチヤ
ートである。１……機関、７……燃料噴射弁、８……コント
ロールユニツト、９……エアフローメータ、１０
……クランク角センサ、１１……水温センサ。 Figure 1 is a functional block diagram showing the configuration of the present invention.
FIG. 2 is a system diagram showing an embodiment of the present invention, FIGS. 3 and 4 are flowcharts showing control details, FIG. 5 is a map, and FIG. 6 is a time chart. DESCRIPTION OF SYMBOLS 1... Engine, 7... Fuel injection valve, 8... Control unit, 9... Air flow meter, 10
...Crank angle sensor, 11...Water temperature sensor.

Claims

[Scope of utility model registration request]

In an electronically controlled fuel injection system for an internal combustion engine, each cylinder is equipped with a fuel injection valve, and each fuel injection valve injects fuel in synchronization with the intake stroke of the corresponding cylinder. a period calculating means for calculating the period of the generated reference signal; a temperature detecting means for detecting the temperature of the engine; a coefficient setting means for setting a coefficient for determining the injection end timing according to the engine temperature; injection end time calculation means for calculating the time from a specific reference signal to the end of injection by multiplying the coefficient; injection time calculation means for calculating the fuel injection time based on the operating state of the engine; injection start time calculating means for calculating the time from a specific reference signal to the start of injection by subtracting the injection time from the time; a timing means for timing by being activated by the specific reference signal; A fuel injection control means is provided to start outputting a drive pulse signal to the fuel injection valve to perform fuel injection for the injection time when the time until the injection start coincides, and the injection end timing is set near the opening timing of the intake valve. An electronically controlled fuel injection device for an internal combustion engine, characterized in that the opening timing is controlled to be more advanced when the engine temperature is low.