Cross-exit exhaust system
AssigneeDaimlerChrysler AG
InventorsJohn D. Cathcart, James P. Salmonowicz
Life of this patent
Estimating the term…
Abstract
An exhaust system features first and second exhaust conduits fluidly coupled to first and second cylinder banks of an associated internal combustion engine. The first and second conduits cross over each other downstream of the engine and are coupled together by a common chamber. The common chamber allows pressure pulses in the first and second conduits flowing past the chamber in opposite directions to at least partially cancel each other, thereby reducing low frequency exhaust noise.
Claims6
An exhaust system for use in a vehicle having an internal combustion engine with first and second cylinder banks, each having respective first and second exhaust manifolds, the exhaust system comprising:
- a first conduit adapted to be coupled to the first manifold;
- a second conduit adapted to be coupled to the second manifold;
- said first and second conduits extending toward each other downstream of their respective manifolds to a cross-over point;
- and
- a common chamber in fluid communication with the first and second conduits substantially at the cross-over point, whereby exhaust gases and associated pressure pulses in the first conduit flow past the common chamber in a direction substantially opposite to flow of exhaust gases and associated pressure pulses in the second conduit.
An exhaust system adapted to be coupled to the first and second exhaust manifolds respectively associated with first and second cylinder banks of an engine having a drive shaft extending substantially parallel to a longitudinal axis of an associated vehicle, the exhaust system comprising:
- a first exhaust conduit adapted to be coupled for fluid communication with the first manifold;
- a second exhaust conduit adapted to be coupled for fluid communication with the second manifold;
- the first and second exhaust conduits positioned such that when coupled respectively to the first and second manifolds, the first and second exhaust conduits cross over one another at a crossing point downstream of the engine substantially on the longitudinal axis;
- and
- a common chamber fluidly connecting the first and second exhaust conduits at the crossing point, whereby exhaust gases and associated pressure pulses in the first conduit flow past the common chamber in a direction substantially opposite the flow of exhaust gases and associated pressure pulses in the second conduit.
Dependencies are inferred from the claim text.