Patent ID: 9376194
Filing Date: 2016-06-28
CPC Classification: B63H,F01N,F02B

Claim Text:
1. An idle relief muffler configured to discharge exhaust gases from an outboard motor to atmosphere surrounding the outboard motor when an internal combustion engine of the outboard motor is operated at idle and at low speeds, the idle relief muffler comprising: an idle relief muffler housing having an open interior, an inlet port configured to convey the exhaust gases to the open interior, and an outlet port configured to discharge the exhaust gases from the open interior; and an exhaust grommet connected to the outlet port, wherein the exhaust grommet comprises a body that is configured to engage with a cowl of the outboard motor and an extension that is configured to extend through the outlet port and protrude into the open interior of the idle relief muffler housing, wherein the extension and the body together define a through-bore that is configured to convey the exhaust gases from the open interior to the atmosphere.