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. 30, 1984

Filed:

May. 03, 1983
Applicant:
Inventors:

Shumpei Hasegawa, Niiza, JP;

Noriyuki Kishi, Itabashi, JP;

Takashi Koumura, Iruma, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02D / ; F02D / ;
U.S. Cl.
CPC ...
123339 ; 123588 ;
Abstract

An idling rpm control method for feedback control of a control valve for controlling the quantity of supplementary air being supplied to the engine in response to a difference between actual engine idling rpm and desired idling rpm. At the start of the engine, the control valve is continuously opened for a predetermined period of time from the time the engine rpm has increased above a predetermined value lower than the desired idling rpm, thereby maintaining the engine rpm at a value higher than the above desired idling rpm. The above predetermined period of time may desirably be set to a value as a function of engine temperature, preferably detected immediately after the engine rpm has exceeded the above predetermined value of engine rpm.


Find Patent Forward Citations

Hasegawa, Shumpei. (1984). Method for controlling engine idling rpm immediately after the start of (U.S. Patent No. 4479471). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4479471

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Loading…