Patent ID: 7757669

Claim:
A control apparatus for a high-pressure fuel pump for an internal combustion engine, wherein the high pressure fuel pump comprising: a pressurizing member being reciprocated by rotation of a pump driving cam mounted on the internal combustion engine; a pressurized chamber whose volume is varied by reciprocation of the pressurizing member to perform pump action by repeating a charging stroke and a discharging stroke; and a normal close type solenoid valve which is installed as a suction valve in a fuel charging passage to the pressurized chamber such that a pump suction pressure generated in the pressurized chamber in the charging stroke is exerted on the solenoid valve in a valve opening direction, and that is closed at OFF state of an electric driving signal and opened at ON state of the electric driving signal, so that a discharging rate of the high-pressure fuel pump of variable discharge rate type is controlled by an opening and closing control of the normal close type solenoid valve as the suction valve, the control apparatus is configured so that a start time of the ON state output of the electric driving signal for the normal close type solenoid valve as the suction valve is set on the way from a top dead center of the pressurizing member to a bottom dead center thereof in the charging stroke of the high-pressure fuel pump and a finish timing of the ON state output of the electrical driving signal is set on the way from the bottom dead center to the top dead center.