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.

Date of Patent:
Oct. 06, 1987

Filed:

Nov. 12, 1985
Applicant:
Inventor:

Kazuhiro Umehara, Hamamatsu, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02P / ; F02P / ;
U.S. Cl.
CPC ...
123335 ; 1231 / ;
Abstract

A rotating speed control apparatus for controlling the rotating speed of an internal combustion engine includes: an ignition circuit of a capacitive discharge ignition (CDI) system; an overspeed preventing circuit having a rotating speed detecting circuit for reducing the rotating speed of the engine to a restricted value in response to an overspeed condition; and a cut-off circuit which temporarily inhibits the control of the engine speed by way of an overspeed prevention inhibiting operation and which is automatically returned to a condition in which it can control the engine speed during restarting of the engine after a stop of the engine. The overspeed preventing circuit is cut off by turning on the cut-off circuit when the engine is driven, so that the overspeed preventing function is inhibited. This cut-off circuit is automatically returned to its off-state when restarting the engine after a stop of the engine, thereby allowing an overspeed of the engine to be prevented.


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