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Heating apparatus for vehicle

  • US 5,852,995 A
  • Filed: 09/24/1997
  • Issued: 12/29/1998
  • Est. Priority Date: 10/01/1996
  • Status: Expired due to Term
First Claim
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1. A heating apparatus for heating a passenger compartment of a vehicle having a water-cooled engine, comprising:

  • a heating heat exchanger for heating said passenger compartment by performing heat-exchange between cooling water having cooled said water-cooled engine and air to be blown into said passenger compartment;

    a heat-generating unit using a shearing force, said heat-generating unit including a rotor which rotates when a driving force is applied thereto and a heat-generating chamber for sealing therein viscous fluid which generates heat for heating said cooling water circulating between said engine and said heating heat exchanger when a shearing force generated by a rotational force of said rotor is applied to said viscous fluid;

    a clutch unit for intermitting a transmission of the driving force from said engine to said rotor;

    heating instruction means for giving an instruction for heating said cooling water by said heat-generating unit; and

    a heating control unit which controls said clutch unit to transmit the driving force of said engine to said rotor after increasing a rotational speed of said engine when said heating instruction means gives the instruction for heating said cooling water, said heating control unit including means for detecting a temperature of said cooling water, said rotational speed of said engine being set to a first speed when said temperature of said cooling water is lower than predetermined temperature and said rotational speed of said engine being set to a second speed when said temperature of said cooling water is higher than the predetermined temperature, said second speed being lower than said first speed.

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