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:
Jul. 07, 1981
Filed:
Nov. 26, 1979
Applicant:
Inventor:
Kazuhiro Higashiyama, Atsugi, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02B / ; F02M / ;
U.S. Cl.
CPC ...
123571 ;
Abstract
In an internal combustion engine having an exhaust recirculation system including a combination of a vacuum-operated recirculation rate control valve and a solenoid-operated vacuum compensating valve, the vacuum compensating valve is controlled by pulse signals delivered from a microcomputer responsive to predetermined operational parameters, such as the revolution speed of the engine and the load on the engine, for modifying the pulse signals depending upon, for example, the accelerating and non-accelerating conditions of the engine.