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US 11,149,617 B2Granted
System and method for low CO emission engine
AssigneeKohler Co.
InventorsEric Pekrul, Martin L. Radue
Life of this patent
Estimating the term…
Abstract
In one aspect, a system is provided and includes an engine including an exhaust valve, an exhaust manifold downstream of the exhaust valve and a muffler downstream of the exhaust manifold. The system also includes a catalyst positioned downstream of the exhaust valve.
Claims24
A system, comprising:
- an engine including an exhaust valve, an exhaust manifold downstream of the exhaust valve and a muffler downstream of the exhaust manifold;
- a catalyst positioned downstream of the exhaust valve;
- a fuel injector;
- and
- a controller connected with the fuel injector, the controller comprising a processor connected to a memory device storing instructions which cause the processor to perform dithering to run the engine rich/lean for a determined period of time;
- wherein a chamber is disposed upstream of the catalyst, the chamber sized for improved exhaust flow distribution to the catalyst, and a volume of the catalyst is 0.25 to 0.75 of a volume of the chamber.
3 more elements
Dependencies are inferred from the claim text.