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:
Nov. 06, 1984
Filed:
Oct. 12, 1982
Applicant:
Inventors:
Shinichi Kato, Toyota, JP;
Katsuhiko Motosugi, Toyota, JP;
Masatami Takimoto, Toyota, JP;
Haruo Yamada, Toyota, JP;
Kisaburo Mizuno, Aichi, JP;
Mitsuyoshi Teramura, Toyota, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02M / ; F01L / ;
U.S. Cl.
CPC ...
1231 / ; 123440 ; 123478 ; 123489 ;
Abstract
An internal combustion engine having a helically-shaped intake port. When the intake manifold vacuum is in the range of about -500 through -250 mmHg, a super lean mixture is fed into the cylinders of the engine. When the intake manifold vacuum is in the range of about -250 through -100 mmHg, a fuel mixture, having the stoichiometric air-fuel ratio, is fed into the cylinders of the engine. When the intake manifold vacuum is smaller than about -100 mmHg, a rich mixture is fed into the cylinders of the engine.