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:
Nov. 04, 1980
Filed:
Apr. 25, 1979
Akiyasu Kuwahara, Ibaraki, JP;
Syozo Yanagisawa, Ibaraki, JP;
Hitachi, Ltd., , JP;
Abstract
An air intake system for a Diesel engine has an air intake passage defined by a tubular wall in which EGR openings are formed for the recirculation of engine exhaust gases. The rate of the flow of the exhaust gases through the EGR openings is controlled by EGR valve which is rotatable with a throttle valve disposed in the air intake passage. Either when the engine temperature is lower than a predetermined temperature level or when the vacuum in the air intake passage downstream of the throttle valve with the latter being in its idle position exceeds a predetermined vacuum level in absolute value, either a bypass passage is open or the throttle valve is moved from the idle position to a more opened position, whereby the engine intake air is increased.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile