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:
Aug. 25, 1981
Filed:
Dec. 19, 1979
Yasuo Takahara, Oobu, JP;
Shigeo Hayashi, Okazaki, JP;
Shizuo Yamada, Kariya, JP;
Norio Shibata, Susono, JP;
Nippondenso Co., Ltd., , US;
Abstract
An exhaust gas recirculation system for an internal combustion engine in which an exhaust gas control valve and a pressure regulating valve is constructed as one body to facilitate the mounting of the system on the engine and to improve the response characteristic of the system. Also, the chamber of the pressure regulating valve opposite to the chamber for receiving the exhaust gas is subjected to a pressure which is controlled in corresponding to the state of engine operation such as load, engine speed or the like, so that the rate of the exhaust gas recirculation is controlled in accordance with the state of engine operation.