Warming intake air using EGR cooler in dual-throttle boosted...

Power plants – Fluid motor means driven by waste heat or by exhaust energy... – With supercharging means for engine

Reexamination Certificate

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C123S568120, C701S108000

Reexamination Certificate

active

08056339

ABSTRACT:
A method for providing intake air to an engine in a vehicle comprises delivering compressed fresh air and EGR to the engine via first and second throttle valves coupled to an intake manifold of the engine. During a higher engine-load condition, an EGR exhaust flow is cooled in a heat exchanger and the cooled EGR exhaust flow is admitting to the intake manifold. During a lower engine-load condition, fresh air is warmed in the heat exchanger, and the warmed fresh air is admitted to the intake manifold.

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Ulrey, Joseph Norman et al., “Exhaust Heat Recovery for Engine Heating and Exhaust Cooling,” U.S. Appl. No. 12/793,447, filed Jun. 3, 2010, 23 pages.
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