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. 18, 2014
Filed:
Mar. 01, 2012
Naoki Fujii, Anjo, JP;
Takeyoshi Hirao, Okazaki, JP;
Naoki Fujii, Anjo, JP;
Takeyoshi Hirao, Okazaki, JP;
Denso Corporation, Kariya, JP;
Abstract
A signal processing circuit inputs a signal from a rotation speed sensor for detecting a rotation speed of the engine. The signal processing circuit further inputs at least one of a noise signal, which is from a noise detection unit for detecting a noise caused by combustion in an engine equipped to a vehicle, a control signal, which is for controlling a fuel injection valve and/or an igniter of the engine, and a combustion state signal, which is from a combustion state sensor for detecting a combustion state of the engine. A distinction circuit distinguishes a vehicle rank of the vehicle equipped with the engine, according to the rotation speed and the at least one of the noise signal, the control signal, and the combustion state signal.