| 摘要 |
The evaporative emissions control device comprises a housing having an inlet connectable to a vent port of an evaporative emissions control canister and an outlet for venting to the atmosphere, the housing containing a carbon filter, a bypass passage, and a valve for selectively closing the bypass passage and/or outlet. In a first operating state the valve closes the bypass passage and opens the outlet, whereby gases from the vent port of the canister pass through the adsorbent material before the air is released via the outlet port. In a second operating state the valve opens both the outlet and the bypass passage, whereby the gases can bypass the adsorbent material to provide a high flow rate, for example during refuelling. In a third operating state the valve closes both the outlet and bypass passage, preventing the release of any fuel vapour through the outlet and into the atmosphere.
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