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:
Nov. 25, 2008
Filed:
Apr. 23, 2007
Mitsuo Hashizume, Saitama, JP;
Kentaro Onuma, Saitama, JP;
Takahide Mizuno, Saitama, JP;
Shusuke Akazaki, Saitama, JP;
Mitsuo Hashizume, Saitama, JP;
Kentaro Onuma, Saitama, JP;
Takahide Mizuno, Saitama, JP;
Shusuke Akazaki, Saitama, JP;
Honda Motor Co., Ltd., Tokyo, JP;
Abstract
An engine control unit includes pressure detector provided in a combustion chamber of the engine. A motoring pressure of the engine is estimated. A combustion starting time is detected when the difference between an internal pressure detected by the pressure detector and the pressure estimated by the ECU exceeds a predetermined value. When the internal pressure detected by the pressure detector reaches its peak after the combustion starting time has been detected, the crank angle at this time point is determined to correspond to the maximum internal cylinder pressure that is generated by combustion.