Fluid control valve

A valve, comprising:

• a housing having a main bore, inlet and outlet ports in communication with the main bore, and an end portion;
• a poppet slidably mounted in the main bore, the poppet having:
• a sealing end;
• an opposite end;
• a longitudinal central bore open at the sealing end and terminating in a pressure wall;
• and
• a radial cross bore providing fluid communication between the central bore and the outlet port;
• a valve seat sized to receive the sealing end of the poppet and prevent fluid communication between the inlet port and the central bore when the sealing end of the poppet is in contact with the valve seat;
• means for biasing the poppet so that the sealing end contacts the valve seat and the opposite end is spaced apart from the end portion of the housing, the space between the opposite end of the poppet and the end portion of the housing forming a damping chamber;
• means for channeling fluid between the central bore and the damping chamber;
• and
• an actuator operable in response to an input current to produce a magnetic flux path tending to move the poppet out of contact with the valve seat;
• wherein the valve seat is formed in a sealing ring and the sealing ring is capable of limited radial movement relative to the housing.

A valve, comprising:

• a housing having a main bore, inlet and outlet ports in communication with the main bore, and an end portion;
• a poppet slidably mounted in the main bore, the poppet having:
• a sealing end;
• an opposite end;
• a longitudinal central bore open at the sealing end and terminating in a pressure wall;
• and
• a radial cross bore providing fluid communication between the central bore and the outlet port;
• a valve seat sized to receive the sealing end of the poppet and prevent fluid communication between the inlet port and the central bore when the sealing end of the poppet is in contact with the valve seat;
• means for biasing the poppet so that the sealing end contacts the valve seat and the opposite end is spaced apart from the end portion of the housing, the space between the opposite end of the poppet and the end portion of the housing forming a damping chamber;
• means for channeling fluid between the central bore and the damping chamber;
• and
• an actuator operable in response to an input current to produce a magnetic flux path tending to move the poppet out of contact with the valve seat;
• wherein:
• the housing includes an expanded bore portion;
• the valve further includes an armature fastened to the poppet and movable within the expanded bore portion;
• and
• the magnetic flux path of the actuator passes through the armature.

A valve, comprising:

• a housing having a main bore, inlet and outlet ports in communication with the main bore, and an end portion;
• a poppet slidably mounted in the main bore, the poppet having:
• a sealing end;
• an opposite end;
• a longitudinal central bore open at the sealing end and terminating in a pressure wall;
• and
• a radial cross bore providing fluid communication between the central bore and the outlet port;
• a valve seat sized to receive the sealing end of the poppet and prevent fluid communication between the inlet port and the central bore when the sealing end of the poppet is in contact with the valve seat;
• means for biasing the poppet so that the sealing end contacts the valve seat and the opposite end is spaced apart from the end portion of the housing, the space between the opposite end of the poppet and the end portion of the housing forming a damping chamber;
• means for channeling fluid between the central bore and the damping chamber;
• and
• an actuator operable in response to an input current to produce a magnetic flux path tending to move the poppet out of contact with the valve seat;
• wherein the means for channeling fluid between the central bore and the damping chamber includes a sensing pin fastened to the pressure wall of the poppet and projecting into the central bore, the sensing pin having conduits to provide fluid communication between the central bore and the damping chamber.

A valve, comprising:

• a housing having a main bore and inlet and outlet ports in communication with the main bore;
• a poppet slidably mounted in the main bore, the poppet having:
• a sealing end;
• an opposite end positioned within a damping chamber;
• a longitudinal central bore open at the sealing end and terminating in a pressure wall, the pressure wall having an opening therethrough;
• and
• a radial cross bore providing fluid communication between the central bore and the outlet port;
• a valve seat sized to receive the sealing end of the poppet and prevent fluid communication between the inlet port and the central bore when the sealing end of the poppet is in contact with the valve seat;
• a sensing pin mounted within the opening through the pressure wall, the sensing pin having conduits to provide fluid communication between the central bore and the damping chamber;
• means for biasing the poppet so that the sealing end contacts the valve seat;
• and
• an actuator operable in response to an input current to produce a magnetic flux path tending to move the poppet out of contact with the valve seat.

A valve, comprising:

• a housing having a main bore, an enlarged bore and inlet and outlet ports in communication with the main bore;
• a poppet slidably mounted in the main bore, the poppet having:
• a sealing end;
• an opposite end;
• a longitudinal central bore open at the sealing end and terminating in a pressure wall;
• and
• a radial cross bore providing fluid communication between the central bore and the outlet port;
• a valve seat sized to receive the sealing end of the poppet and prevent fluid communication between the inlet port and the central bore when the sealing end of the poppet is in contact with the valve seat;
• a cap member secured to the housing;
• means for biasing the poppet so that the sealing end contacts the valve seat and the opposite end is spaced apart from the cap member, the space between the opposite end of the poppet and the cap member forming a damping chamber;
• an armature secured around the poppet and movable within the enlarged bore, the armature having an orifice passing through the armature and being in communication with the damping chamber;
• and
• an actuator operable in response to an input current to produce a magnetic flux path passing through the armature and tending to move the poppet out of contact with the valve seat.