An internal combustion engine is coupled to an electric power generator. An exhaust manifold for the engine includes an exhaust gas conduit. A housing includes a catalyst in fluid communication with the conduit to receive exhaust produced by the engine. The catalyst is operable to reduce one or more
An internal combustion engine is coupled to an electric power generator. An exhaust manifold for the engine includes an exhaust gas conduit. A housing includes a catalyst in fluid communication with the conduit to receive exhaust produced by the engine. The catalyst is operable to reduce one or more constituents of the exhaust.
대표청구항▼
1. An apparatus, comprising: a marine genset including an internal combustion engine and an electric power generator mechanically driven by the engine;an exhaust manifold for the engine including an exhaust gas conduit; andan exhaust emission aftertreatment device including an exhaust passage in flu
1. An apparatus, comprising: a marine genset including an internal combustion engine and an electric power generator mechanically driven by the engine;an exhaust manifold for the engine including an exhaust gas conduit; andan exhaust emission aftertreatment device including an exhaust passage in fluid communication with the conduit to receive exhaust therefrom, the exhaust emission aftertreatment device including a catalyst in the exhaust passage to reduce one or more exhaust constituents;an exhaust muffler including a container having a coolant inlet to receive coolant, the container further including an exhaust inlet in fluid communication with the exhaust passage to receive exhaust therefrom, the container further including an exhaust outlet to allow exhaust to flow from the container, wherein exhaust flows into the container below a coolant level; andan exhaust cooler located downstream of the catalyst and upstream of the exhaust muffler, wherein the coolant inlet is in fluid communication with the exhaust cooler to receive coolant therefrom. 2. The apparatus of claim 1, further comprising means for preventing the exhaust from mixing with the coolant before the exhaust and coolant flow into the container. 3. The apparatus of claim 1, wherein the exhaust is substantially dry when the exhaust flows into the container. 4. The apparatus of claim 1, wherein the exhaust emission aftertreatment device further includes thermal insulation fixed about the catalyst to reduce an outer temperature of the device while maintaining a desired temperature of the catalyst during operation of the engine. 5. The apparatus of claim 1, further comprising a watercraft to carry the genset, the manifold, the exhaust emission aftertreatment device, the exhaust cooler, and the exhaust muffler. 6. The apparatus of claim 1, further comprising a sound shield including the genset. 7. The apparatus of claim 1, further comprising a processing device operatively coupled to the engine, the processing device being structured to execute operating logic to control an air-to-fuel ratio of the engine. 8. The apparatus of claim 7, wherein the processing device is further structured to operate the engine at a relatively constant speed. 9. A method, comprising: operating an internal combustion engine at a speed;driving an electrical power generator with the engine;reducing one or more constituents of an exhaust stream received from the engine with a catalyst;muffling noise from the engine and the exhaust stream with an exhaust muffler downstream of the catalyst by injecting a substantially dry exhaust stream into the exhaust muffler, including coolant, below a coolant level; andcooling the exhaust stream with an exhaust cooler located downstream of the catalyst and upstream of the exhaust muffler. 10. The method of claim 9, further comprising preventing the exhaust stream from mixing with the coolant before the exhaust stream and coolant flow into the container. 11. The method of claim 9, further comprising receiving coolant at the exhaust muffler from the exhaust cooler. 12. The method of claim 9, further comprising carrying the engine, the generator, the catalyst, and the exhaust muffler in a watercraft. 13. The method of claim 9, further comprising controlling an air-to-fuel ratio of the engine. 14. An apparatus, comprising: means for generating electrical power including an internal combustion engine mechanically driving an electrical power generator;means for reducing one or more constituents of an exhaust stream received from the generating means with a catalyst;means for muffling noise from the engine and the exhaust stream with an exhaust muffler downstream of the catalyst by injecting a substantially dry exhaust stream into the exhaust muffler, including coolant, below a coolant level; andmeans for controlling a temperature of the catalyst with thermal insulation. 15. The apparatus of claim 14, further comprising means for preventing the exhaust stream from mixing with the coolant before the exhaust stream and coolant flow in to the container. 16. The apparatus of claim 14, further comprising means cooling the exhaust stream with an exhaust cooler. 17. The apparatus of claim 14, further comprising carrying the engine, the generator, the catalyst, and the exhaust muffler in a watercraft.
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이 특허에 인용된 특허 (62)
Poirier Randall J. (Sheboygan WI) Haugstad Scott J. (Sheboygan WI) Heinrich Martin W. (Cedar Grove WI), Acoustic enclosure for marine engine generator set.
Holtermann Theodore J. (Brookfield WI) Lassanske George G. (Nashota WI) Woodward Lee A. (Racine WI), Marine propulsion device with improved catalyst support arrangement.
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