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US 2014/0158093 A1Published application
Deceleration fuel shut off for carbureted engines
AssigneePinnacle Engines, Inc.
InventorsJames M. Cleeves, Michael Hawkes
Life of this patent
Estimating the term…
Abstract
Fuel efficiency of small carbureted engines can be improved through the use of a fuel shut off valve that ceases fuel flow in the carburetor upon determination that the engine throttle has been closed and the engine is not at or near an idle condition.
Claims22
A system comprising:
- at least one sensor, the at least one sensor detecting an idle condition and a throttle closed condition for an internal combustion engine;
- and
- a fuel shut off valve, the fuel shut off valve shutting off fuel flow to a carburetor of the internal combustion engine when the throttle closed condition occurs without the idle condition and allowing fuel flow to the carburetor when either the throttle closed condition is not present or the idle condition is present.
A method comprising:
- detecting an engine throttle closed condition for an internal combustion engine;
- determining whether an idle condition is present in the internal combustion engine;
- activating a fuel shut-off valve to cease fuel flow when engine throttle closed condition exists and the idle condition is not present;
- and
- deactivating the fuel shut-off valve to resume fuel flow when either the idle condition is present or the engine throttle closed condition does not exist.
2 more elements
Dependencies are inferred from the claim text.