EXHAUST SYSTEM FOR AN INTERNAL COMBUSTION ENGINE
First Claim
1. An exhaust system for an internal combustion engine, having a first exhaust tract and having a second exhaust tract, wherein a first silencer device is arranged in an end section of the first exhaust tract and a second silencer device is arranged in an end section of the second exhaust tract, and the two exhaust tracts are connected in an inter-communicating manner at a crosstalk point, and, in the first or second exhaust tract downstream of the crosstalk point, there is provided a valve for the selective closure of the respective exhaust tract, wherein a distance between the valve and the crosstalk point is dimensioned such that, at a pre-determined rotational speed or speed range of the internal combustion engine, an exhaust line path between the valve and the crosstalk point serves as a quarter lambda resonator such that, at said rotational speed of the internal combustion engine, disturbing noises of the exhaust system are reduced.
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Accused Products
Abstract
An exhaust system for an internal combustion engine, having a first exhaust tract and a second exhaust tract, wherein a first silencer device is arranged in an end section of the first exhaust tract and a second silencer device is arranged in an end section of the second exhaust tract, and the two exhaust tracts are connected in an inter-communicating manner by a crosstalk point, and, in the first or second exhaust tract downstream of the crosstalk point, there is provided a valve for the selective closure of the respective exhaust tract, wherein a distance between the valve and the crosstalk point is dimensioned such that, at a particular rotational speed of the engine, an exhaust line path between the valve and the crosstalk point serves as a quarter lambda resonator such that, at the rotational speed of the internal combustion engine, disturbing noises of the exhaust system are reduced.
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Citations
6 Claims
- 1. An exhaust system for an internal combustion engine, having a first exhaust tract and having a second exhaust tract, wherein a first silencer device is arranged in an end section of the first exhaust tract and a second silencer device is arranged in an end section of the second exhaust tract, and the two exhaust tracts are connected in an inter-communicating manner at a crosstalk point, and, in the first or second exhaust tract downstream of the crosstalk point, there is provided a valve for the selective closure of the respective exhaust tract, wherein a distance between the valve and the crosstalk point is dimensioned such that, at a pre-determined rotational speed or speed range of the internal combustion engine, an exhaust line path between the valve and the crosstalk point serves as a quarter lambda resonator such that, at said rotational speed of the internal combustion engine, disturbing noises of the exhaust system are reduced.
Specification