Piloted fuel tank vapor isolation valve

Piloted fuel tank vapor isolation valve

  • CN 102,165,174 B
  • Filed: 08/25/2009
  • Issued: 04/22/2015
  • Est. Priority Date: 08/26/2008
  • Status: Active Grant
First Claim
Patent Images

1. one kind for the steam separating valve (10) of fuel tank (12), comprising:

  • The first chamber (16) be 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) allowing described first chamber (16) to be communicated with the fluid between described second chamber (18), and can move between barrier film open position and barrier film closed position;

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

    AndPilot valve (30), it is arranged between described second chamber (18) and described 3rd chamber (20), and optionally can move between pilot valve open position and pilot valve closed position, described pilot valve open position is configured to allow described second chamber (18) to be communicated with the fluid between described 3rd chamber (20), described pilot valve closed position is configured to block described second chamber (18) and is communicated with the fluid between described 3rd chamber (20)Wherein, described steam separating valve (10) communicates with control system (32), and described pilot valve (30) is configured to respond and moves between described pilot valve open position and described pilot valve closed position from the electronic signal of described control system (32),Wherein, described control system (32) communicates with one of pressure transducer (38) with case fuel table sensor (36), and is configured to monitor fuel level during fueling event,Wherein said pilot valve (30) is configured to respond the electronic signal indicating fueling event to complete and moves to described pilot valve closed position, andThe electronic signal that wherein said instruction fueling event completes reaches the fuel level of predeterminated level by the responses of one of described case fuel table sensor (36) and described pressure transducer (38) and produces.

View all claims
    ×
    ×

    Thank you for your feedback

    ×
    ×