Exhaust gas recirculation system

Details Exhaust gas recirculation system Exhaust gas recirculation system

2008-01-29

2008-01-29

Trieu, Thai-Ba (Department: 3748)

Power plants

Fluid motor means driven by waste heat or by exhaust energy...

With supercharging means for engine

C123S568110

Reexamination Certificate

active

11207291

ABSTRACT:
An internal combustion engine includes an exhaust gas recirculation (EGR) system. The EGR system includes an air-to-gas EGR cooler, an air inlet line communicating cooling inlet air to the EGR cooler, an EGR supply line communicating exhaust to the EGR cooler, a venturi in the exhaust circuit, and an air outlet line communicating heated air from the EGR cooler to the venturi. Flow of exhaust through the venturi draws cooling air through the EGR cooler. The EGR system also includes a turbocharger having an exhaust turbine and an inlet air compressor. A compressor outlet circuit communicates air from the compressor to an engine air intake. A valve is located in the compressor outlet circuit. An EGR venturi in the compressor outlet circuit is connected in parallel with the valve. A cooled EGR line communicates cooled exhaust from the EGR cooler to a suction port of the EGR venturi.

REFERENCES:
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patent: 6543428 (2003-04-01), Blandino et al.
patent: 6609374 (2003-08-01), Feucht et al.
patent: 2006/0021327 (2006-02-01), Kiser et al.
patent: 869275 (1998-10-01), None

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