Patent ID: 6934620

Claim:
A fuel injection quantity control device for limiting a fuel injection quantity so as to prevent vehicle speed from exceeding a set limit vehicle speed, this device comprising: vehicle speed detection means for detecting the vehicle speed; gear position detection means for detecting a gear position; engine revolution speed detection means for detecting an engine revolution speed; accelerator opening degree detection means for detecting an accelerator opening degree; target acceleration value computation means for deriving a basic target acceleration value corresponding to the difference between the set limit vehicle speed and an actual vehicle speed from a map, finding in a map an upper limit value and lower limit value of the basic target acceleration value for each gear position, limiting the basic target acceleration value with the upper limit value and lower limit value, and determining a target acceleration value; basic fuel injection quantity for vehicle speed limit computation means for determining a basic fuel injection quantity for vehicle speed limit by feedback computation from the difference between the target acceleration value determined with the target acceleration value computation means and the actual acceleration value; accelerator required injection quantity computation means for computing an accelerator required injection quantity from the engine revolution speed and accelerator opening degree; and vehicle speed limit injection quantity computation means for selecting the smaller of the basic fuel injection quantity for the vehicle speed limit and the accelerator required injection quantity and setting it as a fuel injection quantity for vehicle speed limit that will be actually injected into the engine.