Water injection system for an internal combustion engine of a marine propulsion system
AssigneeBrunswick Corporation
InventorsThomas J. Walczak, Stephen B. Riese
Life of this patent
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Abstract
A marine propulsion system is provided with a pump, a filter, and a water injector for injecting a spray or mist of water into the charge air of an internal combustion engine. Water is drawn from a body of water in which a marine propulsion system is operated, in conjunction with a marine vessel, and the water is pumped through a filter before being injected into the charge air of the engine. The filter can be a reverse osmosis device. The engine can be a turbo-charged or normally aspirated engine. The water injection system is suitable for use in association with the 4-cycle or 2-cycle engines.
Claims20
A marine propulsion system, comprising:
- an internal combustion engine;
- a water injector for directing water into a combustion chamber of said internal combustion engine;
- and
- a pump for causing a stream of water to flow from a body of water in which said marine propulsion system is operated to said water injector.
A marine propulsion system, comprising:
- an internal combustion engine;
- a water injector for directing water into a combustion chamber of said internal combustion engine;
- a pump for causing a stream of water to flow from a body of water in which said marine propulsion system is operated to said water injector;
- and
- a water filter disposed in fluid communication between said pump and said water injector.
A method for operating a marine propulsion system, comprising the steps of:
- providing an internal combustion engine;
- pumping a stream of water from a body of water in which said marine propulsion system is operated;
- and
- injecting said stream of water into a combustion chamber of said internal combustion engine.
Dependencies are inferred from the claim text.