Patent ID: 9706295
Date: 2017-07-11
CPC Classifications: F01N,H04R

Claim:
1. An anti-noise system for influencing exhaust noises propagating through a multi-flow exhaust system of a vehicle comprising at least two exhaust tracts, the anti-noise system comprising: a controller; a sound generator; at least one actuator disposed in the sound generator, the at least one actuator being in communication with the controller for receiving control signals, and the at least one actuator being configured for generating sound inside the sound generator; an error microphone that is in communication with the controller, wherein: the sound generator is connectable to at least two exhaust tracts of the multi-flow exhaust system of the vehicle simultaneously; the controller is configured to generate a control signal that prompts the at least one actuator disposed in the sound generator to cancel sound inside the at least two exhaust tracts of the vehicle's multi-flow exhaust system in amplitude at least in part or completely; the error microphone is adapted to measure sound inside the exhaust system and to output a corresponding measurement signal to the controller; the controller is configured to cancel measurement signals received from the error microphone by outputting the control signal to the at least one actuator at least in part or completely; the error microphone is connectable by an additional pipe to the at least two exhaust tracts of the vehicle's multi-flow exhaust system simultaneously at a position of the exhaust system located in a section of a fluid connection between the sound generator and the exhaust system.