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AIR CONDITIONER FOR VEHICLE

  • US 20120253573A1
  • Filed: 03/26/2012
  • Published: 10/04/2012
  • Est. Priority Date: 03/28/2011
  • Status: Active Grant
First Claim
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1. An air conditioner for a vehicle having an in-vehicle equipment which outputs heating energy for heating air to be blown into a vehicle compartment of the vehicle, in which a temperature of the in-vehicle equipment is adjusted to be within a predetermined standard range, and an operational efficiency (η

  • e) of the in-vehicle equipment is controlled such that a fuel consumption of the in-vehicle equipment approaches a smallest amount when the in-vehicle equipment is operated, the air conditioner comprising;

    a first heating portion arranged in a circulation circuit through which a heat medium heated by waste heat of the in-vehicle equipment circulates, the first heating portion heating air to be blown into the vehicle compartment by using the heat medium as a heat source;

    a second heating portion configured to heat the blown air by using the heating energy outputted from the in-vehicle equipment;

    a determination portion configured to determine a target heat amount ratio that is a target value of a heat amount ratio (hm2/hm1), the heat amount ratio (hm2/hm1) being a ratio of a second heat amount (hm2) used for heating the blown air in the second heating portion to a first heat amount (hm1) used for heating the blown air in the first heating portion; and

    a heating adjustment portion configured to adjust at least one of the first heat amount (hm1) and the second heat amount (hm2) such that the heat amount ratio (hm2/hm1) approaches the target heat amount ratio, whereinthe determination portion causes the target heat amount ratio to be increased in accordance with an increase of the operational efficiency (η

    e).

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