Vapor fuel processing device
Number of patents in Portfolio can not be more than 2000
United States of America
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Apr 26, 2022
Grant Date -
Sep 16, 2021
app pub date -
Jul 1, 2019
filing date -
Jul 1, 2019
priority date (Note) -
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status (Latency Note)
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Abstract
A vapor fuel processing includes a canister for absorbing vapor fuel, a purge pipe, a purge control valve, a pump, a pressure sensor, and a determination unit. The pump may be provided on the purge pipe upstream of the purge control valve. The pressure sensor may be provided between the purge control valve and the pump. The determination unit may determine a state of a purge path by comparing a first detected value of the pressure sensor detected when the pump is driven with the purge control valve in a cutoff state with a first reference value and then comparing a second detected value of the pressure sensor detected when the pump is driven with the purge control valve in the communicated state with a second reference value.
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