JPS61183441U

JPS61183441U -

Info

Publication number: JPS61183441U
Application number: JP6655985U
Authority: JP
Priority date: 1985-05-07
Filing date: 1985-05-07
Publication date: 1986-11-15

Description

[Brief explanation of the drawing]

第１図は本考案の構成を示すブロツク図、第２
図は本考案の一実施例を示す構成図、第３図は本
考案の一実施例の気筒別噴射時期の制御手順を示
すフローチヤート、第４図は従来の燃料噴射時期
と理想噴射時期とを示す特性図である。１……点火コイル、２……エアフローメータ、
３……水温センサ、４……スロツトル開度センサ
、５……酸素センサ、６……コントロールユニツ
ト、７……燃料噴射弁、８……駆動回路。 Figure 1 is a block diagram showing the configuration of the present invention;
Figure 3 is a block diagram showing an embodiment of the present invention, Figure 3 is a flowchart showing the control procedure for injection timing for each cylinder in an embodiment of the invention, and Figure 4 shows conventional fuel injection timing and ideal injection timing. FIG. 1...Ignition coil, 2...Air flow meter,
3... Water temperature sensor, 4... Throttle opening sensor, 5... Oxygen sensor, 6... Control unit, 7... Fuel injection valve, 8... Drive circuit.

Claims

[Scope of utility model registration request]

An electronic device comprising: a fuel injection amount setting means for setting the fuel injection amount based on the operating state of the engine; and a fuel injection valve driving means for outputting a drive pulse corresponding to the set fuel injection amount to the fuel injection valve of the engine. In a controlled fuel injection type internal combustion engine, the air-fuel mixture residence time in the intake passage required for the fuel injected from the fuel injection valve to flow into the combustion chamber of each cylinder is determined in the engine operating state prior to fuel injection in that cylinder. a cylinder-by-cylinder mixture residence time calculation means that calculates based on the cylinder-by-cylinder mixture residence time calculation means; and a cylinder-by-cylinder injection timing that calculates the fuel injection timing for the cylinder based on the output of the cylinder-by-cylinder mixture residence time calculation means and the engine rotational speed at that time. An electronically controlled fuel injection system comprising: a calculation means; and a fuel injection timing control means for causing the fuel injection valve to output the drive pulse at the injection timing calculated by the cylinder-specific injection timing calculation means. Air-fuel ratio control device for internal combustion engines.