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:
Apr. 11, 1978
Filed:
Sep. 22, 1976
Akira Ohata, Susono, JA;
Toyota Jidosha Kogyo Kabushiki Kaisha, Toyota, JA;
Abstract
An apparatus for controlling the vacuum ignition timing of an internal combustion engine provided with an exhaust gas recirculation system is disclosed. The apparatus comprises a vacuum advancer having at least one diaphragm therein which forms a chamber on a side of the diaphragm. The chamber is connected to a port in the carburetor for controlling the vacuum ignition timing of the engine by the carburetor vacuum during the exhaust gas recirculation operation. The apparatus further comprises means for preventing the ignition timing from being too advanced when the engine is operating at a high rotational speed. As a result, the required ignition timing during such operation is obtained.