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:
May. 18, 1982
Filed:
Apr. 07, 1980
Tatehito Ueda, Susono, JP;
Kunihiko Hiyama, Chiryu, JP;
Toyota Jidosha Kogyo Kabushiki Kaisha, Toyota, JP;
Abstract
In a diesel engine which includes an air intake system, an exhaust system, and an exhaust gas recirculation passage which recirculates part of the exhaust gases produced by the engine from the exhaust system to the air intake system, a control system for the recirculation of exhaust gases and the flow of intake air, having an intake air flow control valve mounted in the air intake passage, and a recirculated exhaust gas flow control valve, mounted in the exhaust gas recirculation passage, these two control valves being so coupled together that, as one of them opens progressively, the other closes progressively, and vice versa, so that exhaust gas recirculation ratio alters in substantially direct proportion to the amount of opening of the exhaust gas recirculation flow control valve.