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. 22, 1998
Filed:
Aug. 27, 1997
Applicant:
Inventors:
Naoki Tomisawa, Atsugi, JP;
Seizi Suga, Atsugi, JP;
Assignee:
Unisia Jecs Corporation, Kanagawa-ken, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02D / ;
U.S. Cl.
CPC ...
123 9015 ; 123 9017 ; 60284 ;
Abstract
The timing for opening the exhaust valve is advanced by an angle that varies depending upon the load exerted on an engine and the rotational speed of the engine at the cold starting of the engine during a predetermined period of time after the complete combustion. The heat of combustion is positively discharged into an exhaust system and, hence, an oxygen sensor and a catalytic converter disposed in the exhaust system of the engine are activated more quickly.