| 摘要 |
An exhaust system 10, for a combustion engine E, comprises an exhaust pipe 20, a fan 30, a venturi duct 40 and a bypass pipe 50. The exhaust pipe and the bypass pipe are connected with the venturi duct. In operation, the fan ventilates the venturi duct which generates a pressure drop within the exhaust pipe and drives the exhaust fumes towards a tail pipe 70. The fan may be located upstream of the venturi duct, in the bypass pipe, or downstream of the venturi duct, in the tail pipe. Ambient air may be fed to the bypass duct. The fan may be electric. The bypass duct may be connected to the compressor of a turbocharger. A fan bypass 50 may be provided. Also disclosed is an exhaust system comprising a fan located in an exhaust pipe, downstream from a combustion engine. |
