| 摘要 |
A method and system for reducing noise associated with an internal combustion engine comprises operating an engine at an initial speed. An exhaust system has a resonant cavity to attenuate exhaust noise. A microphone detects a sound level at or near an exhaust system of the engine operated the initial speed. A controller controls or adjusts the initial speed to a revised speed if the detected sound level does not meet or fall below a desired sound level.
|
