초록 ▼

When a vehicle stops after heavy load operation, residual heat of exhaust system heats engine room or so-called hot soak condition prevails the engine room resulting in the vapor lock or percolation of fuel. Natural draught is not sufficient to avoid overheating of the fuel system. An engine cooling

When a vehicle stops after heavy load operation, residual heat of exhaust system heats engine room or so-called hot soak condition prevails the engine room resulting in the vapor lock or percolation of fuel. Natural draught is not sufficient to avoid overheating of the fuel system. An engine cooling motor-driven fan is driven when a temperature switch detects high temperature of the exhaust manifold after the main ignition key is turned off, so as to improve restarting and reacceleration performances of the vehicle.

대표청구항 ▼

An apparatus for cooling an internal combustion engine contained in a vehicle engine room, comprising: a motor; a fan driven by said motor; first circuit means for energizing said motor to drive said fan in a first direction to introduce fresh air into the engine room to cool the engine in response

An apparatus for cooling an internal combustion engine contained in a vehicle engine room, comprising: a motor; a fan driven by said motor; first circuit means for energizing said motor to drive said fan in a first direction to introduce fresh air into the engine room to cool the engine in response to a running condition of the engine when the engine room temperature is above a predetermined first temperature; means for reversing the direction of drive of the fan from said first direction in response to a stopped condition of the engine; and second circuit means connected to said reversing means for energizing said motor in response to a stopped condition of the engine when the engine room temperature is above a predetermined second temperature, whereby the fan is driven in said reverse direction to draw hot air from the engine room until the engine room temperature is lower than said predetermined second temperature.