Patent ID: 6912983
Filing Date: 2005-07-05
Classification: F02D,F02M

Abstract:
1. An operation control method using a fuel injection device, comprising: pressurizing fuel from a fuel tank using a high-pressure pump so that the pressurized fuel is stored in a common rail; supplying the pressurized fuel stored in the common rail to an injection nozzle connected to the common rail; and controlling the pressure of the pressurized fuel stored in the common rail by using a low-pressure control solenoid valve upstream of the high-pressure pump, and by using a high-pressure control solenoid valve downstream of the high-pressure pump, one of the low-pressure control solenoid valve and the high-pressure control solenoid valve being selectively feedback-controlled to control the pressure of the pressurized fuel stored in the common rail; wherein said controlling includes, when an engine is in a predetermined start-up state, driving the high-pressure control solenoid valve until a predetermined period of time passes after the engine is activated, to thereby control a pressure in the common rail.