EXHAUST TUNING SYSTEM AND METHOD
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United States of America Patent
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Issued Date -
Jul 22, 2021
app pub date -
Jan 22, 2020
filing date -
Jan 22, 2020
priority date (Note) -
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status (Latency Note)
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Abstract
Methods and systems are provided for adjusting a position of an exhaust valve that regulates engine exhaust noise. In one example, the position of the exhaust valve is adjusted according to a road grade estimate. The road grade estimate may be based on a vehicle's present position on a road or a position that is a distance away from the vehicle's present position.
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