Engine cooling system control apparatus for vehicles and method thereof

Abstract

An engine cooling system control apparatus for vehicles and a method thereof, wherein an operating load is determined by a throttle position of an engine and engine RPM, a pre-set temperature is determined in response to the operating load, and the pre-set temperature and the engine temperature are compared to control the opening and closing level of an electronic valve means for adjusting the circulating flow of cooling water, whereby the flow of cooling water can be accurately adjusted in response to the operating load condition and temperature of the engine, thereby ensuring optimal control of the cooling water temperature in response to the load condition of the engine and preventing thermal shock and instability in the cooling water temperature.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS [0001] This application claims priority of Korean Application No. 10-2003-0065368, filed on Sep. 20, 2003, the disclosure of which is incorporated fully herein by reference. FIELD OF THE INVENTION [0002] The present invention relates to an engine cooling system control apparatus for vehicles and method thereof and, more particularly, to an engine cooling system control apparatus for vehicles and method thereof configured to optimally control a coolant temperature and to prevent thermal shock of a cooling system. BACKGROUND OF THE INVENTION [0003] Generally, water-cooled cooling systems for vehicles are configured such that engine cooling water is ejected from a water pump to sequentially pass through a cylinder block of an engine and a cylinder head to absorb heat from the engine, and is discharged via an outlet in the cylinder head to pass through a heater or a radiator for transfer of the heat. The cooling water is again introduced into the ...

AI Technical Summary

Benefits of technology

[0005] Embodiments of the present invention provide an engine cooling system control apparatus for vehicles and a method thereof configured to optimally control cooling water temperature in response to the load condition of an engine and to prevent a thermal shock and inaccuracy in measuring cooling water temperature.

Problems solved by technology

However, there are drawbacks to the cooling system according to the prior art thus described in that a circulatory route of cooling water is switched with a predetermined temperature as a starting point regardless of the load condition of the engine.

The prior art cooling system causes a sudden flow of water when the thermostat opens to allow cooling water flow through the engine, resulting in a cooling water temperature drop for a preset time, making it impossible to control the cooling water temperature at a constant optimal level and causing thermal shock.

This sudden opening and closing of the thermostat also creates inaccuracy in measuring cooling water temperature.

Images