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. 29, 1984
Filed:
Sep. 30, 1982
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
In a diesel engine exhaust gas recirculation system wherein an exhaust gas recirculation control valve operated by an operating air pressure controls the flow resistance of the exhaust gas recirculation passage according to variation of the operating air pressure effected by an operating air pressure control valve according to the load on the engine so as to replace most of the excess air part of the intake air by recirculated exhaust gases, an atmospheric pressure responsive air pressure control valve is provided so as to supply an air pressure which has been beforehand controlled so as to compensate for such changes of atmospheric pressure as caused by changes of altitude to the operating air pressure control valve as an operating air pressure source.