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:
Feb. 06, 1990

Filed:

Mar. 01, 1989
Applicant:
Inventors:

Sachito Fujimoto, Wako, JP;

Takuya Sugino, Wako, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02M / ;
U.S. Cl.
CPC ...
123571 ;
Abstract

An exhaust gas circulation control method for an internal combustion engine in which an exhaust gas recirculating valve is arranged across an exhaust gas recirculating passage extending between the exhaust and intake passages. The opening of the valve is controlled in response to operating conditions of the engine. The exhaust gas circulation is inhibited when the engine load exceeds a predetermined value set in response to the engine temperature such that it is set to a smaller value as the engine temperature is lower.


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