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:
Mar. 20, 1979
Filed:
Jun. 08, 1977
Yutaka Tsukamoto, Johyoh, JP;
Tatsuro Nakagami, Kyoto, JP;
Mitsubishi Jidosha Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
An exhaust gas recirculation system comprising an exhaust gas recirculation passage means between an exhaust gas passage and an intake passage, first and second flow control valves provided in the recirculation passage means in parallel relationship with each other for regulating flows of the exhaust gas in response to two kinds of vacuum having different characeristics, and a third flow control valve provided in the recirculation passage means in series with said first and second valves for regulating a flow of the gas in response to opening of a throttle valve of a carburetor, thereby obtaining the appropriate amount of exhaust gas recirculation in light and medium loaded driving ranges.