Patent ID: 7740007
Filing Date: 2010-06-22
Classification: F02B,F02D,F02M,Y02T

Abstract:
1. A system for a vehicle, comprising: a diesel engine having an intake system and an exhaust system; a first EGR loop coupled between said intake system and said exhaust system and having a first valve and a first cooler located therein; a second EGR loop coupled between said intake system and said exhaust system and having a second valve and a second cooler located therein; and a control system operating the first and second valves in a first condition where both valves provide EGR flow to the intake system of the engine, and operating the first and second valve to at least temporarily increase flow in the first EGR loop and decrease flow in the second EGR loop to decrease solid build up in a second condition where EGR flow is decreased.