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:
Sep. 14, 1982
Filed:
Oct. 22, 1980
Hiroshi Matsuda, Sakado, JP;
Nissan Diesel Kogyo Kabushiki Kaisha, Ageo, JP;
Abstract
A predetermined amount of exhaust gas recirculation is constantly provided through a first passageway (21) connected between an engine intake manifold (12) and an exhaust manifold (13). A vacuum actuated valve (19) constitutes a second passageway which is connected in parallel with the first passageway (21). The valve (19) is opened to allow exhaust gas recirculation through the second passageway except during idling and heavy load operation of an engine (11), thereby preventing excessive emission of smoke under these conditions.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile