Exhaust Injection Muffler
AssigneeCummins Power Generation IP, Inc.
InventorsMark E. Turpin, Clayton Smith, Gary A. Salmonson, Brian G. Haupt, Shawn John Kipka, Kurt Butz, Lee Severtson, David W. Strombeck
Life of this patent
Estimating the term…
Abstract
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.
Claims20
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;
- and
- an 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;
- and
- 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.
A method, comprising:
- operating an internal combustion engine at a speed;
- driving a electrical power generator with the engine;
- reducing one or more constituents of an exhaust stream received from the engine with a catalyst;
- and
- 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.
The method of claim 13, further comprising receiving coolant at the exhaust muffler from the exhaust cooler.
An apparatus, comprising:
- means for generating electrical power including an internal combustion engine mechanically driving a electrical power generator;
- means for reducing one or more constituents of an exhaust stream received from the generating means with a catalyst;
- and
- 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.
Dependencies are inferred from the claim text.