Internal-combustion engines – Charge forming device – Exhaust gas used with the combustible mixture
Reexamination Certificate
2007-09-24
2009-02-17
Wolfe, Jr., Willis R (Department: 3747)
Internal-combustion engines
Charge forming device
Exhaust gas used with the combustible mixture
C060S278000
Reexamination Certificate
active
07490595
ABSTRACT:
An exhaust gas system for an internal combustion engine includes an intake system and an exhaust outlet interconnected by an exhaust gas recirculation line having an exhaust treatment unit and a heat exchanger. The heat exchanger has a first back pressure and the exhaust treatment unit has a second back pressure, smaller than the first back pressure. The exhaust treatment unit is disposed at such a first distance from the heat exchanger in flow direction that, during operation, a gas flow entering the exhaust treatment unit is homogenized. The exhaust gas system permits an advantageous configuration of a heat exchanger and an exhaust treatment unit, such as for example a honeycomb body in the exhaust gas recirculation line, in which both the heat exchanger and the exhaust treatment unit can have a smaller structure than in conventional systems. This reduces costs considerably for equipping such a system.
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Brück Rolf
Geskes Peter
Maucher Ulrich
Ruckwied Jens
Scheeder Andreas
Behr GmbH & Co. KG
Emitec Geseelschaft fur Emissionstechnologie MBH
Greenberg Laurence A.
Locher Ralph E.
Stemer Werner H.
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