JPH01136647U

JPH01136647U -

Info

Publication number: JPH01136647U
Application number: JP3327288U
Authority: JP
Priority date: 1988-03-15
Filing date: 1988-03-15
Publication date: 1989-09-19
Anticipated expiration: 2003-03-15
Also published as: JPH0734193Y2

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図は演算処理内容を示すフローチヤート、第４
図はスロツトル弁開度変化量と割込みパルス幅と
の関係を示す図、第５図及び第６図は従来の制御
特性図である。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……スロツトルセン
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, Fig. 3 is a flowchart showing the calculation processing contents, and Fig. 4 is a system diagram showing an embodiment of the present invention.
This figure shows the relationship between the amount of change in throttle valve opening and the interrupt pulse width, and FIGS. 5 and 6 are conventional control characteristic diagrams. DESCRIPTION OF SYMBOLS 1... Engine, 7... Fuel injection valve, 8... Control unit, 9... Air flow meter, 10
...Crank angle sensor, 11...Throttle sensor.

Claims

[Scope of Claim for Utility Model Registration] A fuel injection valve is provided in the engine intake system, and in addition to regular fuel injection in an amount corresponding to the state quantity of intake air at a predetermined timing synchronized with engine rotation, predetermined acceleration conditions are provided. An electronically controlled fuel injection system for an internal combustion engine that injects fuel intermittently at a predetermined time interval includes a throttle valve opening detection means for detecting the throttle valve opening of the engine at predetermined time intervals, and a throttle valve opening detected by the throttle valve opening detection means. Throttle valve opening change amount calculating means for calculating the amount of change in opening degree; Acceleration determining means for determining acceleration/non-acceleration from the amount of change in throttle valve opening calculated by the throttle valve opening change amount calculating means. , calculating a first interrupt injection amount based on the amount of change in the throttle valve opening calculated by the throttle valve opening change amount calculation means when the acceleration determining means determines that it is the first acceleration from non-acceleration; 1st
an interrupt injection amount calculation means; a first interruption injection means for injecting a first interruption injection amount of fuel calculated by the first interruption injection amount calculation means; and an interruption injection by the first interruption injection amount. Immediately after, when acceleration is determined again by the acceleration determining means, a second interrupt injection amount is calculated based on the amount of change in the throttle valve opening most recently calculated by the throttle valve opening change amount calculating means. and difference calculation means for calculating an additional interruption injection amount by subtracting the first interruption injection amount from the second interruption injection amount calculated by the second interruption injection amount calculation means. An electronically controlled fuel injection device for an internal combustion engine, comprising: a second interrupt injection means for injecting the additional interrupt injection amount of fuel calculated by the difference calculation means.