Patent ID: 7143740

Claim:
An engine fuel injection control device comprising: an engine operating state detecting section configured to detect an engine operating state of an engine; and a fuel injection control section configured to control a fuel injector connected to a pressure accumulator section such that at least two fuel injections per cycle are executed with a first fuel injection being executed prior to a second fuel injection with a fuel injection interval occurring between when the first fuel injection is executed and when the second fuel injection is executed, a first fuel injection quantity of fuel being injected during the first fuel injection set based on the engine operating state detected by the engine operating state detecting section, and a second fuel injection quantity of fuel being injected during the second fuel injection set based on the engine operating state detected by the engine operating state detecting section, the second fuel injection quantity being varied in accordance with the fuel injection interval, the fuel injection control section including a fuel injection interval detecting section configured to detect the fuel injection interval, and a fuel injection quantity setting section configured to set the first and second fuel injection quantities with the second fuel injection quantity being first set to a basic fuel injection amount based on the engine operating state detected by the engine operating state detecting section and then the basic fuel injection amount being revised by a basic revision amount to a revised fuel injection amount in accordance with the fuel injection interval that has been detected, the fuel injection quantity setting section being further configured to adjust the revised fuel injection amount of the second fuel injection quantity based on the first injection quantity such that the basic revision amount becomes a larger amount as the first fuel injection quantity becomes larger.