System and method for controlling an operating frequency of a purge valve to improve fuel distribution to cylinders of an engine
First Claim
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1. 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.
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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.
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Citations
22 Claims
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1. A system comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 21)
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11. A method comprising:
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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. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 22)
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Specification