ISOLATION VALVE WITH FAST DEPRESSURIZATION FOR HIGH-PRESSURE FUEL TANK

摘要

The shielding valve 20 is disposed within the passage 56 and includes a piston 52 having a first orifice 49 and a flow restrictor 50 having a pressure reducing valve 50a with a second orifice 50b . The valve 20 also includes a coil 46 selectively excited by a signal from the controller 14 and a coil 46 for selectively opening and closing the first orifice 49 and / And a solenoid valve assembly 40 having an armature 42 movable between a first position and a second position. When the coil 46 is energized, the armature 42 is moved to the second position to allow steam to flow through the first orifice 49 and to selectively open the pressure reducing valve 50a to open the twelfth orifice 49 ), The second orifice 50, or both. The two orifices 49, 50b work together to provide a controlled vapor flow.