Variable exhaust system for V-engines II

Details Variable exhaust system for V-engines II Variable exhaust system for V-engines II

1998-07-09

1999-09-28

Look, Edward K.

Power plants

Internal combustion engine with treatment or handling of...

By means producing a chemical reaction of a component of the...

60323, 60284, 60287, F01N 310

Patent

active

059569492

ABSTRACT:
An exhaust system is provided for a motor vehicle having a V-type internal combustion engine forming two banks of cylinders. The exhaust system includes first and second exhaust manifolds, the first manifold connected to the first cylinder bank and the second manifold connected to second cylinder bank. A pair of catalytic converters communicate exhaust from the exhaust manifolds. An exhaust pipe communicates exhaust from each manifold. The first exhaust pipe extends from a first side of the vehicle to a second side of the vehicle. The second exhaust extends from the second side of the vehicle first side of the vehicle. A NOx trap receives exhaust from the second exhaust pipe. A third exhaust pipe communicates exhaust between the first catalytic converter and the NOx trap. The third exhaust pipe does not extend to the second side of the vehicle. A control valve selectively blocks exhaust flow through the first pipe to direct the exhaust through the third exhaust pipe.

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