JPH0285841U - - Google Patents

Description

[Brief explanation of drawings]

Figure 1 is a block diagram showing the configuration of the present invention, Figure 2 is a diagram showing the configuration of an embodiment of the present invention, and Figure 3 is a diagram showing the configuration of an embodiment of the present invention.
The figure is a flowchart showing the fuel injection control routine of reference signal output synchronization in the above embodiment, and FIG.
FIG. 5 is a flowchart showing the interrupt injection control routine of the above embodiment, FIG. 5 is a time chart showing the injection amount state of each cylinder in the fuel injection control of the above embodiment, and FIG. This is a time chart showing the injection amount state of each cylinder. 1... Internal combustion engine, 2... Intake passage, 4... Throttle valve opening sensor, 5... Crank angle sensor,
6... Control unit, 7... Fuel injection valve, 8... Air flow meter, 9... Water temperature sensor.

Claims (1)

[Scope of utility model registration request] Each cylinder is provided with a fuel injection valve, an operating state detection means for detecting the operating state of the engine, a reference signal output means for outputting a reference signal at each stroke phase difference interval between the cylinders, and a detected operating state of the engine. a fuel injection amount setting means for setting a fuel injection amount to be injected at the reference signal output interval according to the reference signal output interval, and a drive pulse signal corresponding to the set fuel injection amount in synchronization with the output of the reference signal to the corresponding cylinder. A fuel injection control device for an internal combustion engine comprising: drive pulse signal output means for outputting a drive pulse signal to a fuel injection valve; acceleration determination means for determining an acceleration state of the engine based on a signal from the operating state detection means; an acceleration time determining means for determining whether or not the drive pulse signal is being output when it is determined that the acceleration state is present; and an acceleration timing determining means that determines whether or not the drive pulse signal is being outputted when the acceleration state is determined, and fuel injection upon receiving the drive pulse signal for the first time after the determination time when the acceleration state is determined. a first interrupt injection amount setting means for setting an interrupt injection amount of fuel to be injected into the cylinder before the fuel injection; a second interrupt injection amount setting means for setting an interrupt injection amount of fuel to be interrupt-injected to each cylinder by a reduction correction using a larger reduction rate for a cylinder in which fuel injection is later;
The acceleration determination is made when the interrupt drive pulse signal corresponding to the interrupt injection amount for each cylinder set by the interrupt injection amount setting means and the second interrupt injection amount setting means is not being outputted. interrupt drive pulse signal output means for simultaneously outputting an output to each corresponding cylinder in substantially synchronization with an acceleration determination, and for outputting an interrupt drive pulse signal immediately after the end of the drive pulse signal when an acceleration determination is made during output of the drive pulse signal; What is claimed is: 1. A fuel injection control device for an internal combustion engine, characterized by comprising: