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US 9,316,166 B2Granted
System and method for controlling an operating frequency of a purge valve to improve fuel distribution to cylinders of an engine
AssigneeGM Global Technology Operations LLC
InventorsJon C. Miller, Scott Jeffrey, David Edward Prout
Life of this patent
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Abstract
A system according to the principles of the present disclosure includes an engine speed module and a valve control module. The engine speed module determines a speed of an engine based on a position of a crankshaft. The valve control module selectively adjusts an operating frequency of a purge valve based on the engine speed.
Claims22
A system comprising:
- an engine speed module that determines a speed of an engine based on a position of a crankshaft;
- and
- a valve control module that selectively adjusts an operating frequency of a purge valve to a first frequency when the engine speed corresponds to a harmonic of the operating frequency of the purge valve, wherein the engine speed does not correspond to a harmonic of the first frequency.
A method comprising:
- determining a speed of an engine based on a position of a crankshaft;
- and
- selectively adjusting an operating frequency of a purge valve to a first frequency when the engine speed corresponds to a harmonic of the operating frequency of the purge valve, wherein the engine speed does not correspond to a harmonic of the first frequency.
Dependencies are inferred from the claim text.