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:
Dec. 02, 1986
Filed:
Apr. 24, 1985
Takanori Onishi, Toyota, JP;
Abstract
The engine load signal, the engine speed signal, and the engine warm-up signal are directed to an electric control unit. The electric control unit issues an output signal depending on the engine condition; in the stage of engine warm-up, the output signal is issued from the first EGR MAP which does not permit EGR under idling of the engine and after full warm-up, it is issued from the second EGR MAP which permits EGR even under idling. Upon receiving the output signal, the electric vacuum regulating valve acts to adjust the opening degree of the EGR valve, thereby preventing the erosion and wear of the cylinder bore and the piston ring and reducing the generation of NOx.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile