发明名称 |
Method and apparatus for controlling engine exhaust sound for vehicles |
摘要 |
<p>An exhaust sound controlling method including reducing a flow rate of exhaust gas that passes through an exhaust path, to a first flow rate in accordance with increase in engine speed in a first engine speed region, and increasing the flow rate of exhaust gas to a second flow rate in accordance with increase in engine speed in a second engine speed region higher in engine speed than the first engine speed region. An exhaust sound controlling apparatus including a baffle plate and a valve that is operated to open a communication passage that communicates upstream and downstream sides of the baffle plate in an engine starting region, close the communication passage in an idling region and a low engine speed region, and open the communication passage and increase an opening of the valve as the engine speed rises in a high engine speed region.
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申请公布号 |
EP1978216(A3) |
申请公布日期 |
2009.09.30 |
申请号 |
EP20080005826 |
申请日期 |
2008.03.27 |
申请人 |
NISSAN MOTOR CO., LTD. |
发明人 |
MAEDA, KAZUSHIGE;SASAKI, AKIRA |
分类号 |
F01N1/08;F01N1/16;F01N13/08 |
主分类号 |
F01N1/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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