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US 11,634,201 B1Granted
Marine drives and idle relief exhaust systems for marine drives
AssigneeBrunswick Corporation
InventorsAndrew S. Waisanen, Jong Hoe Huh
Life of this patent
Estimating the term…
Abstract
A marine drive is configured to propel a marine vessel in a body of water. The marine drive has an engine; a primary exhaust conduit receiving exhaust gases from the engine and discharging the exhaust gases to a primary exhaust outlet discharging the exhaust gases to the body of water; an idle relief exhaust outlet discharging exhaust gases to atmosphere, above the body of water; a primary idle relief muffler receiving exhaust gases from the primary exhaust conduit; a secondary idle relief muffler receiving exhaust gases from the primary idle relief muffler; and a tertiary idle relief muffler configured to receive exhaust gases from the secondary idle relief muffler and discharges exhaust gases to atmosphere via the idle relief exhaust outlet.
Claims24
A marine drive configured to propel a marine vessel in a body of water, the marine drive comprising:
- an engine,
- a primary exhaust conduit receiving exhaust gases from the engine and discharging the exhaust gases to a primary exhaust outlet discharging the exhaust gases to the body of water,
- an idle relief exhaust outlet discharging a portion of the exhaust gases to atmosphere, above the body of water,
- a primary idle relief muffler receiving exhaust gases from the primary exhaust conduit,
- a secondary idle relief muffler receiving exhaust gases from the primary idle relief muffler,
- a tertiary idle relief muffler configured to receive exhaust gases from the secondary idle relief muffler and discharges exhaust gases to atmosphere via the idle relief exhaust outlet, and
- an inlet boss in the primary idle relief muffler, the inlet boss configured to redirect flow of exhaust gases towards an interior wall of the primary idle relief muffler to promote separation of water.
4 more elements
A marine drive configured to propel a marine vessel in a body of water, the marine drive comprising:
- an engine,
- a primary exhaust conduit receiving exhaust gases from the engine and discharging the exhaust gases to a primary exhaust outlet discharging the exhaust gases to the body of water,
- an idle relief exhaust outlet discharging a portion of the exhaust gases to atmosphere, above the body of water,
- a primary idle relief muffler receiving exhaust gases from the primary exhaust conduit,
- a secondary idle relief muffler receiving exhaust gases from the primary idle relief muffler,
- a tertiary idle relief muffler configured to receive exhaust gases from the secondary idle relief muffler and discharges exhaust gases to atmosphere via the idle relief exhaust outlet, and
- a conduit through which exhaust gases are conveyed from the secondary idle relief muffler to the tertiary idle relief muffler, wherein the conduit comprises a bellows.
4 more elements
A marine drive configured to propel a marine vessel in a body of water, the marine drive comprising:
- an engine,
- a primary exhaust conduit receiving exhaust gases from the engine and discharging the exhaust gases to a primary exhaust outlet discharging the exhaust gases to the body of water,
- an idle relief exhaust outlet discharging a portion of the exhaust gases to atmosphere, above the body of water,
- a primary idle relief muffler receiving exhaust gases from the primary exhaust conduit,
- a secondary idle relief muffler receiving exhaust gases from the primary idle relief muffler, and
- a tertiary idle relief muffler configured to receive exhaust gases from the secondary idle relief muffler and discharges exhaust gases to atmosphere via the idle relief exhaust outlet,
- wherein the tertiary idle relief muffler comprises a large chamber that receives exhaust gases from the secondary idle relief muffler and a relatively smaller chamber via which exhaust gases are discharged to the idle relief exhaust outlet.
4 more elements
A marine drive configured to propel a marine vessel in a body of water, the marine drive comprising:
- an engine,
- a primary exhaust conduit receiving exhaust gases from the engine and discharging the exhaust gases to a primary exhaust outlet discharging the exhaust gases to the body of water,
- an idle relief exhaust outlet discharging a portion of the exhaust gases to atmosphere, above the body of water,
- a primary idle relief muffler receiving exhaust gases from the primary exhaust conduit,
- a secondary idle relief muffler receiving exhaust gases from the primary idle relief muffler,
- a tertiary idle relief muffler configured to receive exhaust gases from the secondary idle relief muffler and discharges exhaust gases to atmosphere via the idle relief exhaust outlet, and
- a bypass conduit that conveys exhaust gases from the primary idle relief muffler to the tertiary idle relief muffler without traveling through the secondary idle relief muffler.
4 more elements
A marine drive configured to propel a marine vessel in a body of water, the marine drive comprising:
- an engine,
- a primary exhaust conduit receiving exhaust gases from the engine and discharging the exhaust gases to a primary exhaust outlet discharging the exhaust gases to the body of water,
- an idle relief exhaust outlet discharging a portion of the exhaust gases to atmosphere, above the body of water,
- a primary idle relief muffler receiving exhaust gases from the primary exhaust conduit,
- a secondary idle relief muffler receiving exhaust gases from the primary idle relief muffler,
- a tertiary idle relief muffler configured to receive exhaust gases from the secondary idle relief muffler and discharges exhaust gases to atmosphere via the idle relief exhaust outlet,
- a primary drain that drains condensation from the primary idle relief muffler, and
- a secondary drain that drains condensation from the secondary idle relief muffler, wherein the secondary drain drains the condensation from the secondary idle relief muffler to the primary drain via the primary idle relief muffler.
5 more elements
A marine drive configured to propel a marine vessel in a body of water, the marine drive comprising:
- an engine,
- a primary exhaust conduit receiving exhaust gases from the engine and discharging the exhaust gases to a primary exhaust outlet discharging the exhaust gases to the body of water,
- an idle relief exhaust outlet discharging a portion of the exhaust gases to atmosphere, above the body of water,
- a primary idle relief muffler receiving exhaust gases from the primary exhaust conduit,
- a secondary idle relief muffler receiving exhaust gases from the primary idle relief muffler, and
- a tertiary idle relief muffler configured to receive exhaust gases from the secondary idle relief muffler and discharges exhaust gases to atmosphere via the idle relief exhaust outlet,
- wherein the marine drive is an outboard motor having a powerhead compartment and a midsection that is separate from the powerhead compartment, and wherein the primary idle relief muffler and the secondary idle relief muffler are located in the midsection and the tertiary idle relief muffler is located in the powerhead compartment.
4 more elements
An exhaust system for a marine drive having an engine that produces exhaust gases, the exhaust system comprising:
- a primary exhaust conduit receiving exhaust gases from the engine and discharging the exhaust gases to a primary exhaust outlet discharging the exhaust gases to a body of water in which the marine drive is operated,
- an idle relief exhaust outlet discharging exhaust gases to atmosphere, above the body of water,
- a primary idle relief muffler receiving exhaust gases from the primary exhaust conduit,
- a secondary idle relief muffler receiving exhaust gases from the primary idle relief muffler,
- a tertiary idle relief muffler configured to receive exhaust gases from the secondary idle relief muffler and discharges exhaust gases to atmosphere via the idle relief exhaust outlet, and
- a bypass conduit that conveys exhaust gases from the primary idle relief muffler to the tertiary idle relief muffler without traveling through the secondary idle relief muffler.
3 more elements
Dependencies are inferred from the claim text.