JPH03123955U - - Google Patents

Description

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the basic configuration of the fuel injection control device according to the first invention of the present application, FIG. 2 is a block diagram showing the basic configuration of the fuel injection control device according to the second invention of the present application, and FIG. 3 is a general FIG. 4 is a graph illustrating the operation of the fuel injection control device according to the first invention of the present application.
FIG. 5 is a graph explaining the operation of the fuel injection control device according to the second invention of the present application, FIG. 6 is a flowchart explaining the operation of the fuel injection control device according to the first invention of the present application, and FIGS. 7 and 8 are It is a flowchart explaining the operation of the fuel injection control device according to the second invention of the present application.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) An intake air amount detection means for detecting the amount of intake air into the engine, a rotation speed detection means for detecting the rotation speed of the engine, and a device for detecting the detected intake air amount. basic pulse width calculation means for dividing by the number of revolutions and calculating a basic pulse width based on the quotient; a memory for storing a predetermined pulse width value; and the basic pulse width and the pulse width stored in the memory. and a smoothing process that calculates a weighted average of and, outputs the obtained value as a pulse width after the smoothing process, and rewrites the memory with this value, and and a pulse width correction means for correcting the pulse width after the smoothing process, by applying a fuel injection pulse signal having the corrected pulse width to the electromagnetic injection valve of the engine. In an engine fuel injection control device that controls the amount of fuel, a start detection means detects the start of the engine, and a value determined in advance as an optimum value of a basic pulse width at the time of engine start is written in the memory as an initial value. An initial value setting means is further provided, and the smoothing processing means starts the smoothing process using the initial value immediately after the start of the engine is detected by the start detection means. Features: Engine fuel injection control device. (2) An intake air amount detection means for detecting the amount of intake air into the engine; a rotation speed detection means for detecting the engine rotation speed; a basic pulse width calculating means for calculating a basic pulse width based on the basic pulse width, a memory for storing a predetermined pulse width value, and a weighted average of the basic pulse width and the pulse width stored in the memory. A smoothing process is performed, and the obtained value is output as the pulse width after the smoothing process, and the smoothing process means rewrites the memory with this value, and the correction amount according to the operating state of the engine is used to calculate the smoothing process. a pulse width correction means for correcting a processed pulse width; The injection control device includes: a start detection means for detecting the start of the engine; a timer for measuring elapsed time from the time when the start detection means detects the start; and a timer for measuring the time measured by the timer until the time measured by the timer exceeds a predetermined value. is further provided with a smoothing coefficient setting means for setting a first coefficient and a second coefficient different from the first coefficient after the elapse of time as a smoothing coefficient; 1. A fuel injection control device for an engine, characterized in that when calculating the average, a calculation is performed to perform weighting according to the size of the smoothing coefficient.