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. 29, 2003
Filed:
Nov. 16, 2001
Brett M. Bailey, Peoria, IL (US);
Caterpillar Inc, Peoria, IL (US);
Abstract
A piston-pumped EGR system for an internal combustion engine includes first and second stationary regenerators. Alternating flow through the first and second stationary regenerators is controlled by a regenerator directional flow control valve in fluid communication with at least one check valve disposed between the regenerator directional flow control valve and an exhaust manifold of the engine. Flow through the stationary recuperators is controlled so that exhaust gas and cooling bleed flow are alternatingly directed through the stationary recuperators whereby heat is removed from the recirculated exhaust gas prior to reintroduction into an intake manifold and one of the stationary regenerators is cooled by bleed air, which is subsequently discharged into the exhaust manifold of the engine.