Patent ID: 6971370
Filing Date: 2005-12-06
Classification: F02D

Abstract:
1. A common rail type fuel injection system of an internal combustion engine, the fuel injection system comprising: a common rail for accumulating high-pressure fuel; an injector for injecting the fuel accumulated in the common rail; a supply pump for pressurizing the fuel and for supplying the fuel to the common rail using a plunger reciprocated by a camshaft; and a control device for calculating injection start timing and a command injection quantity in accordance with an operating state of the engine and for controlling opening and closing of the injector based on the injection start timing and the command injection quantity, wherein the control device includes pump pressure-feeding quantity correcting means for calculating a correction value in accordance with a pump pressure-feeding quantity of the fuel, wherein the pump pressure-feeding quantity of the fuel is determined based on a discharge rate of the supply pump and is supplied from the supply pump to the common rail during an injection period in which the injector injects the fuel, and for correcting the command injection quantity or an injection period, which is calculated based on the command injection quantity, with the correction value.