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:
Mar. 17, 1981
Filed:
Jul. 21, 1978
Applicant:
Inventors:
Takayoshi Nakatomi, Susono, JP;
Keiji Aoki, Susono, JP;
Assignee:
Toyota Jidosha Kogyo Kabushiki Kaisha, Aichi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02P / ;
U.S. Cl.
CPC ...
123415 ; 123417 ; 123423 ;
Abstract
An optimum spark timing angle, i.e. spark advance or spark advance angle, is computed for an automobile internal combustion engine by a computing unit on the basis of at least two operational parameters of an engine. An intake manifold vacuum signal during an intake stroke of one cylinder of the engine is stored or delayed a given time, and then an intake manifold vacuum signal and a rotational speed signal of the engine are delivered to a computing unit which computes a spark advance for the specific cylinder.