METHOD AND APPARATUS FOR DETECTING LEAKAGE OF FUEL EVAPORATIVE GAS
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United States of America Patent
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Issued Date -
Nov 19, 2015
app pub date -
May 15, 2015
filing date -
May 16, 2014
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Abstract
Disclosed is an apparatus and method for detecting a leakage of fuel evaporative gas in a vehicle fuel system. When preset condition information is satisfied during operation of a vehicle, the apparatus and method may control a canister purge valve, and generate detection information on a leakage of fuel evaporative gas based on switch state information of a pressure switch provided in a natural vacuum leakage detection (NVLD) module, thereby detecting a leakage of the fuel evaporative gas during operation.
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