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. 15, 1988
Filed:
Apr. 24, 1987
Applicant:
Inventors:
Kazuhiko Norota, Toyota-shi, Aichi-ken, JP;
Takashi Hattori, Toyota-shi, Aichi-ken, JP;
Nobuyuki Kobayashi, Toyota-shi, Aichi-ken, JP;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02P / ;
U.S. Cl.
CPC ...
123416 ; 123417 ; 123423 ; 123493 ;
Abstract
An engine having a fuel injector for normally feeding a lean air-fuel mixture into the engine cylinders. Ignition timing is determined so that it is suitable for the lean air-fuel mixture. The gear changing operation of the transmission of the engine is detected from the change in the engine speed and the change in the absolute pressure in the intake passage. When the gear changing operation is carried out, a rich air-fuel mixture is fed into the engine cylinders, and the ignition timing is retarded.