EGR system for an internal combustion engine that feeds exhaust gas independent of intake air

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United States of America Patent

PATENT NO 8931462
SERIAL NO

13033982

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Importance

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Abstract

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An internal combustion engine of a motor vehicle has a multi-channel fresh gas system with a plurality of fresh gas lines leading to different cylinder groups. At least one shut-off element is connected in each of the fresh gas lines and coupled to a control and/or regulating device. A multi-channel exhaust system for the discharge of exhaust gas out of the cylinders has a plurality of exhaust lines leading away from the different cylinder groups. A multi-channel exhaust-gas recirculation system has exhaust-gas recirculation lines, for recirculating exhaust gas from the exhaust system to the fresh gas system. The method and device utilize crossed-channel exhaust-gas recirculation, in which the exhaust-gas recirculation lines branching off from the exhaust lines of a certain channel lead back in each case to fresh gas lines of a different channel. The shut-off elements of the individual fresh gas lines are actuated such that a fresh gas line which is shut off from the fresh gas supply by a shut-off element is supplied with exhaust gas from an exhaust line of a different channel, whose associated fresh gas line is not shut off from the fresh gas supply, via an exhaust-gas recirculation line.

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Patent Owner(s)

Patent OwnerAddress
MAN TRUCK & BUS AGMUNICH GERMANY

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Pappenheimer, Andreas Ellingen, DE 4 10

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