Patent ID: 7213582
Filing Date: 2007-05-08
Classification: B60K,F02M,Y10T

Abstract:
1. A vent valve for a fuel tank including: a valve housing, at least one switchable element in the valve housing and operable to provide at least first and second switching positions, and at least first, second and third connections on the valve housing comprising a first connection for at least indirect connection to the fuel tank, a second connection to a filling pipe of the fuel tank and a third connection to atmosphere, the valve housing including at least one first filter chamber which includes a fuel vapor filter, the arrangement being such that a first switching position of the switchable element provides for operational venting of the fuel tank in which a flow path between the first connection and the third connection is enabled and a second switching position of the switchable element provides for refuelling venting of the fuel tank in which a flow path between the first and second connections is enabled with the fuel vapor filter being bypassed.