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:
Aug. 10, 1999
Filed:
Jul. 07, 1997
Applicant:
Inventors:
Futoshi Nishioka, Hiroshima, JP;
Katsuhiko Sakamoto, Hiroshima, JP;
Hiroshi Takamatsu, Hiroshima, JP;
Masanobu Kotoku, Hiroshima, JP;
Assignee:
Mazda Motor Corporation, Hiroshima, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01M / ;
U.S. Cl.
CPC ...
731173 ; 731181 ;
Abstract
Detection of abnormalities of an idle speed control system is performed based on whether a deviation of an on-idle engine speed from a target engine speed is within a critical range which is changed so as to make the idle speed control system harder to be judged abnormal when the engine is in a lapped state where the engine is apt to change speed than when in a green state where the engine is hardly changeable in speed.