The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 24, 2007
Filed:
Mar. 06, 2003
Yoshiaki Takano, Kosai, JP;
Shun Kurata, Kariya, JP;
Yoshiaki Takano, Kosai, JP;
Shun Kurata, Kariya, JP;
DENSO Corporation, Kariya, JP;
Abstract
An automotive air conditioning system comprising a main heating unitfor heating air passing through an air conditioning ductwith cooling water of an engine E and a refrigeration cycle devicehaving a first refrigerant circulating circuitwhich is a cooler mode and a second refrigerant circulating circuitwhich is a heater mode and whose operation is controlled by an ECU, wherein while the automotive air conditioning system is operated in a heater mode functioning as auxiliary heating, in the event that a heating load is equal to or larger than a predetermined value, a refrigerant compressoris kept switched off until a predetermined time Thas elapsed after the engine E has started. In addition, a heating device is provided on the refrigerant compressor or an accumulator so that the refrigerant compressor or the accumulator is heated by the heating devices while the automotive air conditioning system is operated in the heater mode functioning as auxiliary heating.