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. 03, 2013
Filed:
Aug. 26, 2011
Takashi Hashizume, Wako, JP;
Shigeru Saito, Wako, JP;
Takashi Hashizume, Wako, JP;
Shigeru Saito, Wako, JP;
Honda Motor Co., Ltd., Tokyo, JP;
Abstract
In an apparatus for discriminating a piston stroke of a general-purpose internal combustion engine connectable to an operating machine to be used as a prime mover of the machine and having a four-stroke operating cycle comprising intake, compression, expansion and exhaust, the operating cycle is discriminated based on intake air temperature detected by an intake air temperature sensor whether a stroke next to a predetermined crank angular position at which a crank angle sensor produces an output is the intake stroke or the expansion stroke, when operation of the engine is determined to be under a stable condition. With this, it becomes possible to discriminate the four-stroke operating cycle of the general-purpose engine without using an expensive pressure sensor.