Sound attenuating air intake systems for marine engines
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United States of America Patent
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Oct 10, 2017
Issued Date -
N/A
app pub date -
Jun 3, 2016
filing date -
Jun 3, 2016
priority date (Note) -
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Abstract
An air intake system for a marine engine has a throttle body and a throttle plate that is rotatably supported within the throttle body. The throttle plate is rotatable to regulate air flow through the throttle body from a first region on a first side of the throttle plate to a second region on a second side of the throttle plate. An air conduit has an air conduit inlet and an air conduit outlet. A noise cancelling device comprises a pass-though chamber. The pass-through chamber has a chamber inlet that receives the air flow from the air conduit, a chamber outlet that discharges the air flow to the idle air control valve, and a pass-through interior between the chamber inlet and chamber outlet. The pass-though chamber is configured to cancel noise emanating from the idle air control valve.
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