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:
Aug. 23, 1983
Filed:
Feb. 06, 1981
Tsuneomi Yano, Tokyo, JP;
Nissan Motor Company, Limited, Kanagawa, JP;
Abstract
There is provided a warm up control system for an internal combustion engine which controls the engine speed, spark ignition timing and the spark advance in order to keep the engine operating condition in desirable for maximizing the warm up efficiency and minimizing of exhaust emission and fuel consumption. The control system include an electronic controlled storing tables respectively representative of a target engine speed, a required maximum engine warm up rate and a required engine stability in relation to an engine temperature and a crank revolution angle as a representative of the engine speed. In the system, the engine speed, spark ignition timing and the spark advance are controlled so that the engine operating condition adapts the determined target engine speed, the maximum engine warm up rate and the maximum engine stability.