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:
Sep. 02, 1980
Filed:
May. 16, 1979
Applicant:
Inventors:
Kazuo Tomita, Gotenba, JP;
Nobuo Habu, Susono, JP;
Assignee:
Toyota Jidosha Kogyo Kabushiki Kaisha, Toyota, JP;
Primary Examiner:
Int. Cl.
CPC ...
F02P / ; F02M / ;
U.S. Cl.
CPC ...
123411 ; 123568 ;
Abstract
An ignition timing control device for an internal combustion engine incorporating exhaust gas recirculation and vacuum advancing of ignition timing, the device including a check valve which holds the largest vacuum which appears in the vacuum port during opening process of the intake throttle valve for the vacuum advancer and a delay means which delays transmission of the largest vacuum to the vacuum advancer.