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US 7,395,816 B2Granted
Evaporative emissions control device for a vehicle fuel system
AssigneeDelphi Technologies, Inc.
InventorRemi B Loevenbruck
Life of this patent
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AssigneeDelphi Technologies, Inc.
InventorRemi B Loevenbruck
Estimating the term…
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.
An evaporative emissions control device for controlling the venting of gases from a carbon canister of a vehicle evaporative emissions control system, the control device comprising a housing having an inlet port connectable to the vent port of the carbon canister and an outlet port for venting the housing to the atmosphere, the housing defining a chamber containing an adsorbent material located in a flow path between the inlet port and outlet port and capable of adsorbing fuel vapour, wherein the device includes a bypass passage communicating with the inlet port and the outlet port, bypassing the adsorbent material, and valve means for controlling the flow of air through the bypass passage and for controlling the flow of gases through the outlet port.
Dependencies are inferred from the claim text.