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:
Dec. 02, 2014
Filed:
Aug. 10, 2011
Daisuke Sato, Wako, JP;
Hidetaka Maki, Wako, JP;
Hiroyuki Ohnishi, Wako, JP;
Masatoshi Endo, Wako, JP;
Yoshikazu Oshima, Wako, JP;
Daisuke Sato, Wako, JP;
Hidetaka Maki, Wako, JP;
Hiroyuki Ohnishi, Wako, JP;
Masatoshi Endo, Wako, JP;
Yoshikazu Oshima, Wako, JP;
Honda Motor Co., Ltd., Tokyo, JP;
Abstract
A failure determination device capable of performing failure determination for a shutter device of a vehicle with accuracy in a short time period. In an engine room of a vehicle, a condenser for a refrigeration cycle for an aircon is provided and at a front grille of the vehicle, a grille shutter device is provided for introducing ambient air for cooling the condenser into the engine room by opening a grille shutter. According to the failure determination device of the shutter device, a pressure of the refrigerant discharged from the condenser is detected as a refrigerant pressure. A failure of the grille shutter device is determined based on the refrigerant pressure, which changes at a large rate according to the opening/closing of the grille shutter, enabling failure determination with accuracy in a short time period.