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:
Jul. 29, 2003
Filed:
Feb. 08, 2002
Akira Shimoyama, Numazu, JP;
Kazuyoshi Kishibata, Numazu, JP;
Kokusan Denki Co., Ltd., Shizuoka-ken, JP;
Abstract
An operating state detecting method for an internal combustion engine for detecting whether the engine is in an accelerating state and/or whether it is in a decelerating state without detecting the opening degree of a throttle valve is to be provided. A plurality of rotational angle positions of a crankshaft of an internal combustion engine are specified as sampling positions, and pressures within an air intake pipe sampled at each sampling position are stored. Every time a pressure within the air intake pipe is sampled at each sampling position, the newly sampled pressure within the air intake pipe is compared with a previous pressure within the air intake pipe sampled at the same sampling position one combustion cycle before, and whether the engine is in an accelerating state and/or whether it is in a decelerating state is determined from the result of comparison.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile