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:
Jun. 13, 1978
Filed:
Feb. 23, 1977
Applicant:
Inventors:
Teruyuki Nakano, Tokyo, JA;
Syoichi Otaka, Miyoshi, JA;
Assignee:
Honda Giken Kogyo Kabushiki Kaisha, Tokyo, JA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F02P / ;
U.S. Cl.
CPC ...
1231 / ;
Abstract
An ignition timing control system for internal combustion engines during warm-up utilizes opposed chambers separated by a flexible diaphragm to control movement of a rod to advance or retard the ignition timing. Temperature responsive electric switches energize electromagnetic valves to control vacuum pressures in said chambers, so that as a cold engine warms up, the ignition timing changes from advance to retard in a series of steps.