| 主权项 |
1. A capless fuel tank filler neck of a motor vehicle by which fuel is delivered to a fuel tank of the motor vehicle, where the capless fuel tank filler neck has an open fuel mouth and a throat through which the fuel flows to the fuel tank, and where the capless fuel tank filler neck has a closure being initially positioned across the throat thereof to block access to the fuel tank, and an insert to be removably attached to the capless fuel tank filler neck by which to couple a source of pressure or vacuum to the fuel tank so that the fuel tank can be tested for leaks, said insert comprising a hollow elongated flow tube to be inserted through the open fuel mouth and down the throat of the filler neck when said insert is attached to the filler neck, said hollow elongated flow tube having a length such that one end of said hollow elongated flow tube makes direct contact with and applies a pushing force to the closure in order to displace the closure initially positioned across the throat of the filler ck so as to unblock access to the fuel tank, said insert also comprising a base extending across said hollow elongated flow tube to cover and lay flush against the open fuel mouth of the filler neck, said hollow elongated flow tube extending from said base, such that said hollow elongated flow tube is suspended within the filler neck from said base, said base having an inlet opening formed therethrough and communicating with said hollow elongated flow tube, the inlet opening through said base coupled to the source of pressure or vacuum, whereby a flow path is established from the source of pressure or vacuum to the fuel tank by way of the hollow elongated flow tube of said insert and the filler neck when said closure has been displaced by said hollow elongated flow tube and access to the fuel tank is thereby unblocked. |
