EVAPORATIVE EMISSION CONTROL DEVICE FOR AN INTERNAL COMBUSTION ENGINE
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United States of America Patent
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Issued Date -
Jan 10, 2013
app pub date -
Jul 6, 2012
filing date -
Jul 7, 2011
priority date (Note) -
Abandoned
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Abstract
A leakage judgment with respect to a fuel tank is carried out. If the fuel tank is not leaking, a leakage judgment with respect to a canister is carried out. If there is a possibility of leakage in the fuel tank, a leakage judgment with respect to the fuel tank and the canister is carried out. If it is judged that there is leakage in the fuel tank and the canister, the leakage judgment with respect to the canister is carried out.
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