Systems and methods for reducing vehicle valve degradation
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United States of America
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Feb 4, 2020
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N/A
app pub date -
Nov 13, 2018
filing date -
Nov 13, 2018
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Abstract
Methods and systems are provided for reducing degradation and issues related to noise, vibration and harshness (NVH) for a canister purge valve configured to regulate a flow of fuel vapors from a fuel vapor canister to an engine in response to a request to purge the fuel vapor canister of fuel vapors. In one example, a method may include purging the fuel vapor canister by synchronizing a timing of opening and closing events of the canister purge valve to correspond with instances where a pressure difference across the canister purge valve is lower as compared to higher in terms of pressure oscillations across the canister purge valve during the purging. In this way, higher loads and stress on the canister purge valve may be avoided, thus reducing degradation and NVH issues.
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