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:
Jul. 23, 2002
Filed:
Nov. 28, 2000
Craig Savonen, Carleton, MI (US);
Phillip F. Rimnac, Saline, MI (US);
Richard M. Avery, Jr., West Bloomfield, MI (US);
Detroit Diesel Corporation, Detroit, MI (US);
Abstract
A system and method is provided for treating engine exhaust gases produced by an internal combustion engine. The internal combustion engine has an exhaust gas recirculation circuit which diverts engine exhaust gas from an engine exhaust gas manifold to an engine air intake manifold. An exhaust gas recirculation valve is further provided for controlling the amount of engine exhaust gas diverted toward the engine air intake manifold. Additionally, a small meter pump is provided to create a pressure differential sufficient to introduce a finely tunable and controllable amount of engine exhaust gas into the engine air intake manifold.