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:
Mar. 07, 2000
Filed:
Nov. 20, 1997
Nissan Motor Co., Ltd., Yokohama, JP;
Abstract
A throttle opening degree detection apparatus installed to an engine of a vehicle comprises a idle-up section which directly changes a throttle value opening degree to improve an engine starting characteristic under an engine cold condition and a sensor device which detects the operation of the idle-up section. The apparatus further includes a first learning section which updates a full close reference value under inoperative condition of the idle-up section and a second learning section which updates the full close reference value under idle-up section operating condition. The apparatus calculates a throttle opening degree on the basis of a difference between a throttle detection signal of a throttle sensor and the full close reference value.