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. 11, 1990
Filed:
Feb. 06, 1990
Shuji Miyama, Kaisha, JP;
Hiroya Ohkumo, Kaisha, JP;
Fuji Jukogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
A plurality of reference pressures for pressures in an intake passage of the engine are stored in a memory so as to be derived in accordance with speed of the engine and opening degree of a throttle valve of the engine. A reference pressure is derived from the memory in accordance with the engine speed and the corrected opening degree. The reference pressure is delayed. Pressure in an intake pipe is compared with the delayed reference pressure. An abnormality signal is generated when the intake pipe pressure is higher than the delayed reference pressure.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile