JPH01148047U

JPH01148047U -

Info

Publication number: JPH01148047U
Application number: JP4474788U
Authority: JP
Priority date: 1988-04-04
Filing date: 1988-04-04
Publication date: 1989-10-13

Description

[Brief explanation of the drawing]

第１図は本考案の構成を説明するブロツク図、
第２図は本考案の一実施例の構成を示す図、第３
図は同上実施例の燃料噴射量の補正量演算フロー
チヤート、第４図は同上実施例の燃料噴射量演算
フローチヤート、第５図は同上実施例の機関回転
速度の平均値算出方法を説明するための図である
。１…内燃機関、３…エアフローメータ、５…ス
ロツトル開度センサ、６…燃料噴射弁、７…クラ
ンク角センサ、８…水温センサ、１０…Ｏ_２セン
サ、１１…コントロールユニツト。 Figure 1 is a block diagram explaining the configuration of the present invention.
Figure 2 is a diagram showing the configuration of an embodiment of the present invention;
The figure is a flowchart for calculating the correction amount of the fuel injection amount in the same embodiment as above, FIG. 4 is a flowchart for calculating the fuel injection amount in the same example, and FIG. This is a diagram for DESCRIPTION OF SYMBOLS 1... Internal combustion engine, 3... Air flow meter, 5... Throttle opening sensor, 6... Fuel injection valve, 7... Crank angle sensor, 8... Water temperature sensor, 10... _O2 sensor, 11... Control unit.

Claims

[Scope of utility model registration request]

A fuel injection amount control device for an internal combustion engine having a fuel injection valve for each cylinder includes an operating state detection means for detecting an engine operating state including an engine rotational speed, and sets a fuel injection amount according to the detected engine operating state. an average engine rotational speed calculating means for calculating an average engine rotational speed of all cylinders at a predetermined stroke period in a predetermined engine operating state; a deviation calculation means for calculating a deviation of the rotational speed detection value from the average engine rotational speed; a correction amount calculation means for calculating a correction amount of the fuel injection amount for each cylinder so that this deviation becomes zero; correction amount storage means for storing the correction amount for each cylinder calculated by the amount calculation means; and updating the stored value of the correction amount for each cylinder with the correction amount calculated based on the calculation result of the deviation calculation means. A correction amount updating means, and a drive pulse output means for outputting a drive pulse signal corresponding to the corrected fuel injection amount corrected based on the calculated correction amount to the fuel injection valve of the cylinder at the fuel injection timing, 1. A fuel injection control device for an internal combustion engine, comprising: abnormality determination means for determining an abnormality of a fuel injection valve when the correction amount is not within a predetermined range.