Patent ID: 6435144
Filing Date: 2002-08-20
Classification: B60H,B60K,F01P

Abstract:
A system for controlling air flow through a a refrigerant condenser core for an air conditioner and ventilating an engine compartment in a work machine comprising:a fan positioned adjacent one end portion of the engine compartment downstream from the condenser core; signal generating means associated with the air conditioner, the signal generating means being operable to output a signal indicative of a desired fan speed based upon operation of the air conditioner; at least one sensor positioned in the engine compartment for determining the air temperature thereof; an electronic controller coupled with the signal generating means and with the at least one sensor for receiving signals therefrom, the controller being operable to receive a signal from the signal generating means indicative of a desired fan speed for operation of the air conditioner, and a signal from the at least one sensor indicative of the temperature of the engine compartment; the controller being further operable to determine a desired fan speed for ventilating the engine compartment based upon the signal received from the at least one sensor indicative of the temperature within the engine compartment; and the controller outputting a signal to the fan to control the speed thereof, the output signal being indicative of the highest fan speed dictated by the signals received from the signal generating means and from the at least one sensor.