Method of pinched line detection for an evaporative emission con

Measuring and testing – Simulating operating condition – Marine

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73 497, G01M 1500

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active

056168365

ABSTRACT:
A method of pinched line detection for an evaporative emission control system to determine if a pinched line is present within the system includes the steps of pulsing a leak detection pump at a predetermined rate and determining if a last pump period is less than a predetermined possible pinched line period limit. The method also includes the steps of concluding a possible pinched line if the last pump period is not less than the possible pinched line period limit and concluding that there is not a possible pinched line if the last pump period is greater than or equal to the possible pinched line period limit.

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