Patent ID: 7185828

Claim:
A hydraulic control valve in which an actuator is installed, comprising: a housing forming therein a control chamber, a high pressure passage in which a high pressurized fuel is supplied, a high pressure port communicated with the control chamber and the high pressure passage, a low pressure passage and a low pressure port communicated with the control chamber and the low pressure passage; a valve member interposed between the high pressure port and the low pressure port to be movable therebetween, said valve member being affected by a pressure in the control chamber; means for supplying energy to the actuator so that the supplied energy is kept therein, thereby making displacement the actuator; means for interrupting the supply of energy so as to cause the actuator to discharge the kept energy, thereby making displacement the actuator; and converting means operatively connected to the actuator and the valve member, and adapted to convert the displacement of the actuator corresponding to the kept energy into hydraulic pressure applied to the valve member, thereby moving the valve member so as to open the low pressure port and close the high pressure port, said converting means converting the displacement of the actuator corresponding to the discharged energy into hydraulic pressure applied to the valve member, thereby moving the valve member so as to open the high pressure port and close the low pressure port, wherein energy which the actuator requires to move the valve member so as to close the high pressure port is larger than energy which the actuator requires to move the valve member so as to open the low pressure port.