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. 22, 2014
Filed:
Dec. 17, 2009
Kimihiko Tanaya, Chiyoda-ku, JP;
Takahiko Inada, Chiyoda-ku, JP;
Yumi Takaoka, Aioi, JP;
Takeshi Koda, Kobe, JP;
Kimihiko Tanaya, Chiyoda-ku, JP;
Takahiko Inada, Chiyoda-ku, JP;
Yumi Takaoka, Aioi, JP;
Takeshi Koda, Kobe, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
There is provided a combustion state detecting apparatus capable of detecting combustion-state abnormality in an internal combustion engine. A comparison timing is set to be advanced in terms of the rotation angle of the crankshaft of an internal combustion engine with respect to the ending timing of an electric quantity based on an ion that occurs when ignition is performed normally through a predetermined ignition signal among the plurality of ignition signals; in the case where, as a result of the comparison between the detected ending timing of an electric quantity based on an ion and the comparison timing, the ending timing is advanced in terms of the rotation angle of the crankshaft with respect to the comparison timing, it is determined that the combustion based on ignition through the predetermined ignition signal is abnormal.