Piloted fuel tank vapor isolation valve

Piloted fuel tank vapor isolation valve

  • CN 102,165,174 A
  • Filed: 08/25/2009
  • Published: 08/24/2011
  • Est. Priority Date: 08/26/2008
  • Status: Active Grant
First Claim
Patent Images

1. steam separating valve (10) that is used for fuel tank (12) comprising:

  • First chamber (16) that is communicated with described fuel tank (12) fluid;

    Second chamber (18) adjacent with described first chamber (16);

    Be arranged in the barrier film (24) between described first chamber (16) and described second chamber (18), described barrier film (24) has the barrier film aperture (26) that allows described first chamber (16) to be communicated with fluid between described second chamber (18), and can move between barrier film open position and barrier film closed position;

    Be arranged on described barrier film (24) the same side and the 3rd chamber (20) that is communicated with outlet passage (14) fluid with described first chamber (16), wherein said barrier film open position allows described first chamber (16) to be communicated with fluid between described the 3rd chamber (20), is communicated with fluid between described the 3rd chamber (20) and described barrier film closed position limits described first chamber (16) basically;

    AndPilot valve (30), it is arranged between described second chamber (18) and described the 3rd chamber (20), and can between pilot valve open position and pilot valve closed position, optionally move, described pilot valve open position is configured to allow described second chamber (18) to be communicated with fluid between described the 3rd chamber (20), and described pilot valve closed position is configured to block described second chamber (18) and is communicated with fluid between described the 3rd chamber (20).

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