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:
Dec. 22, 1987
Filed:
Apr. 23, 1986
Shigeki Imazu, Hiroshima, JP;
Mazda Motor Corporation, Hiroshima, JP;
Abstract
The disclosure is directed to a control device for an internal combustion engine for a motor vehicle such as an automobile or the like, having a control valve disposed in a by-pass passage for opening and shutting the by-pass passage which communicates the upstream side and the downstream side of an intake passage by by-passing a throttle valve, in which the engine speed in idling operating condition is controlled to a target speed. This control device is characterized in that the ignition timing is rather advanced than ordinary idling ignition timing during a certain period from the instance when the engine has entered into the idling operating condition after having received a signal detecting the idling operating condition of the engine.