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Twin fan control system and method

  • US 6,463,891 B2
  • Filed: 12/04/2000
  • Issued: 10/15/2002
  • Est. Priority Date: 12/17/1999
  • Status: Expired due to Fees
First Claim
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1. A control system for controlling the speed of a plurality of fans for cooling a plurality of fluids in a work machine, each of said plurality of fluids being operative between a predetermined minimum threshold temperature and a predetermined maximum threshold temperature, said control system comprising:

  • a plurality of sensors positioned to sense the temperature of each of the plurality of fluids, each sensor being operable to output a signal indicative of the temperature of that particular fluid;

    an electronic controller coupled with said plurality of sensors for receiving signals therefrom, said controller being operable to receive a signal from each of said plurality of sensors indicative of a temperature for each of the plurality of fluids;

    said controller being further operable to determine a desired fan speed for each of said plurality of fans based upon signals received from said plurality of sensors; and

    said controller outputting a signal to each of said plurality of fans to individually control the speed thereof, each output signal being indicative of a desired fan speed for a particular fan and each output signal being based upon a comparison of at least some of the signals received from said plurality of sensors.

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