Patent ID: 8967095
Filing Date: 2015-03-03
Classification: F01P

Abstract:
1. An engine cooling apparatus comprising: an engine for vehicle traveling; a pump driven by the engine; a heat exchanger; a circulation passage for circulating cooling liquid between the engine and the heat exchanger by driving of the pump; a solenoid valve capable of opening/closing the circulation passage; and a controller for controlling operations of the engine; wherein the solenoid valve includes a valve body movable between a position away from a valve seat and a position contacting the valve seat and held to contact the valve seat and a solenoid capable of maintaining the contact between the valve body and the valve seat in response to supply of power thereto, the solenoid including a cylindrical body defining an inner diameter and an outer diameter; at the time of driving of the pump under a non-energized state of the solenoid, the valve body is movable to the position away from the valve seat by the fluid pressure of the cooling liquid; the controller is configured to be controllable such that power supply to the solenoid is initiated before start-up of the engine; and a part of the circulation passage extends coaxially through the cylindrical body of the solenoid.