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:
Sep. 05, 2006
Filed:
Sep. 13, 2002
Teruo Wakashiro, Shioya-gun, JP;
Atsushi Matsubara, Utsunomiya, JP;
Shinichi Kitajima, Utsunomiya, JP;
Kan Nakaune, Nasu-gun, JP;
Yasuo Nakamoto, Utsunomiya, JP;
Toshinari Shinohara, Utsunomiya, JP;
Teruo Wakashiro, Shioya-gun, JP;
Atsushi Matsubara, Utsunomiya, JP;
Shinichi Kitajima, Utsunomiya, JP;
Kan Nakaune, Nasu-gun, JP;
Yasuo Nakamoto, Utsunomiya, JP;
Toshinari Shinohara, Utsunomiya, JP;
Honda Motor Co., Ltd., Tokyo, JP;
Abstract
A failure detection device for a vehicle having a deceleration deactivatable engine, by which failure detection, performed primarily by monitoring the oil pressure of operation oil, is ensured. The failure detection device is provided for a vehicle having a deceleration deactivatable engine in which it is possible to deactivate at least one cylinder by closing both of intake and exhaust valves thereof by applying the oil pressure of operation oil to a passage for deactivation execution via an actuator, and also it is possible to cancel the closed state of both of the intake and exhaust valves by applying the oil pressure of the operation oil to a passage for deactivation cancellation. The failure detection device includes an oil pressure condition judgement section (steps Sand S) which determines whether the oil pressure of the operation oil measured by a POIL sensor satisfies threshold conditions, and an abnormality judgement section (steps Sand S) which determines that abnormality exists when it is determined, by the oil pressure condition judgement section, that the oil pressure of the operation oil does not satisfy the threshold conditions.