John A Timmons

US Patent:

8297053, Oct 30, 2012

Filed:

Jul 31, 2008

Appl. No.:

12/222008

Inventors:

John R. Gladden - Lafayette IN, US
David Andrew Pierpont - Dunlap IL, US
John P. Timmons - Chillicothe IL, US

Assignee:

Caterpillar Inc. - Peoria IL

International Classification:

F02B 33/44

US Classification:

606052, 60612

Abstract:

An exhaust system for a use with a combustion engine is provided. The exhaust system may have a first exhaust manifold configured to receive exhaust from the engine, and a first turbocharger driven by exhaust from the first exhaust manifold. The exhaust system may also have a second exhaust manifold configured to receive exhaust from the engine in parallel with the first exhaust manifold, and a second turbocharger driven by exhaust from the second exhaust manifold and having a different flow capacity than the first turbocharger. The exhaust system may further have an exhaust gas recirculation circuit in fluid communication with the second exhaust manifold.