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Vehicle heater control apparatus and method for controlling the same

  • US 7,070,119 B2
  • Filed: 12/31/2003
  • Issued: 07/04/2006
  • Est. Priority Date: 10/11/2003
  • Status: Expired due to Fees
First Claim
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1. A heater control apparatus for a vehicle provided with a heater core case, a temperature control lever, a temperature control lever angle sensor, an interior temperature sensor, wherein said vehicle heater control apparatus comprises:

  • a cooling water bypass extending between a cooling water inlet conduit and a cooling water outlet conduit in the heater core case, the cooling water inlet conduit being in fluid communication with the cooling water outlet conduit through the cooling water bypass;

    an engine control part for outputting a control signal in order to control an opening mode of the conduits comparing a signal generated from the temperature control lever angle sensor and a signal generated from the interior temperature sensing sensor with reference to corresponding set-point values;

    wherein the engine control part outputs a control signal corresponding to a normal state of the conduits when the control signal generated from the temperature control lever angle sensor is higher than 0°

    C., and simultaneously the control signal generated from the interior temperature sensing sensor is above 20°

    C.;

    and wherein the engine control part outputs a control signal corresponding to the opening mode of the cooling water bypass when the control signal generated from the temperature control lever angle sensor is below 0°

    C., and simultaneously the control signal generated from the interior temperature sensing sensor is below 20°

    C. in order to bypass the cooling water without passing through the heater core;

    a relay controlled in accordance with the control signal generated from the engine control part; and

    a cooling water conduit control part for allowing the cooling water to be bypassed via the cooling water bypass in accordance with the control signal generated from the engine control part after the relay is turned on, the cooling water conduit control part being installed in the cooling water bypass.

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