Abstract: A fluid actuated normally closed coolant control valve. The valve comprises a valve housing, an inlet port, the inlet port configured for fluid communication with either a coolant source or a heat exchanger of a DEF tank; an outlet port configured for fluid communication with the other of the heat exchanger of a DEF tank or the coolant source; a valve chamber, a valve and an actuator configured to actuate the valve. The actuator is a fluid actuated piston. The valve is biased to a closed condition in which the flow of coolant from the inlet port to the outlet port is prevented by the valve. The valve is actuatable to an open condition in which the flow of coolant from the inlet port to the outlet port is permitted, and the valve is withdrawn from the valve chamber, wherein the flow factor for the valve is greater than 1.5.

Abstract: An example system includes a valve assembly having: (i) a plurality of ports including an inlet port, an outlet port, and a vent port, (ii) a solenoid coil having a cavity therein, (iii) an armature slidably accommodated in the cavity of the solenoid coil, (iv) a magnet fixedly disposed within the solenoid coil, wherein the magnet applies a magnetic force on the armature in a distal direction, and (v) a spring applying a biasing force on the armature in a proximal direction; and a controller sending a signal having a particular polarity to the solenoid coil such that the signal is applied to the solenoid coil for a particular period of time, and resending the signal periodically every particular time interval.

Abstract: An example valve assembly includes a mounting plate having an inlet port configured to be fluidly coupled to a source of fluid; a pilot supply valve mounted to the mounting plate, wherein the pilot supply valve comprises (i) an inlet port fluidly coupled to the inlet port of the mounting plate, and (ii) a first outlet port configured to be fluidly coupled to a pilot port of a main valve; and a pilot exhaust valve mounted to the mounting plate, wherein the pilot exhaust valve comprises (i) a vent port, (ii) a second outlet port that is fluidly coupled to the first outlet port of the pilot supply valve.

Abstract: An example method includes receiving, at a first frequency, sensor information indicative of an actual pressure level of a pilot fluid signal in a pilot line connecting an outlet port of a pilot supply valve to a pilot port of a main valve; determining an estimated pressure for the pilot fluid signal in the pilot line at a second frequency greater than the first frequency; determining a pressure estimate error based on comparing the actual pressure level to the estimated pressure; determining a pressure level error based on comparing the estimated pressure to a commanded pressure value; and operating the pilot supply valve in an open state to provide the pilot fluid signal to the pilot port of the main valve until the pressure level error is less than a threshold value.

Abstract: A fluid actuated normally closed coolant control valve. The valve comprises a valve housing, an inlet port, the inlet port configured for fluid communication with either a coolant source or a heat exchanger of a DEF tank; an outlet port configured for fluid communication with the other of the heat exchanger of a DEF tank or the coolant source; a valve chamber, a valve and an actuator configured to actuate the valve. The actuator is a fluid actuated piston. The valve is biased to a closed condition in which the flow of coolant from the inlet port to the outlet port is prevented by the valve. The valve is actuatable to an open condition in which the flow of coolant from the inlet port to the outlet port is permitted, and the valve is withdrawn from the valve chamber, wherein the flow factor for the valve is greater than 1.5.

Abstract: A method of forming a flapper assembly (200) for a throttle valve (100) is provided. The method includes steps of forming a flapper (110) comprised of hub (112) having an opening (114) and at least one vane (116a,b) coupled to the hub (112), disposing a shaft (210) in the opening (114), and pressing a punch (P) into an outer surface (112a) of the hub (112) such that a torque dimple (118) extends from the hub (112) into the shaft (210) to fasten the flapper (110) to the shaft (210).

Abstract: A solenoid (30) is provided. The solenoid (30) includes a magnetic core (304). The solenoid (30) also includes a pole piece (305) positioned substantially coaxially with the magnetic core (304). An over-molded component (303) is provided that is over-molded around at least a portion of the magnetic core (304) and at least a portion of the pole piece (305).

Abstract: A fluid pressure regulator is provided. The fluid pressure regulator includes a housing and a cavity extending between a first end surface and a second end surface of the housing. A divider is arranged within the housing and configured to divide the cavity into a first chamber, extending between the divider and the first end surface, for receiving a first pressurized fluid and a second chamber, extending between the divider and the second end surface, for receiving a second pressurized fuel. A liquid fluid inlet is connected to the first chamber and adapted for introduction of a pressurized liquid fluid into the first chamber and a gaseous fluid inlet connected to the second chamber and adapted for introduction of a pressurized gaseous fluid into the second chamber. A sensor device configured to monitor the position of the divider within the cavity of the housing.

Abstract: A method of forming a flapper assembly (200) for a throttle valve (100) is provided. The method includes steps of forming a flapper (110) comprised of hub (112) having an opening (114) and at least one vane (116a,b) coupled to the hub (112), disposing a shaft (210) in the opening (114), and pressing a punch (P) into an outer surface (112a) of the hub (112) such that a torque dimple (118) extends from the hub (112) into the shaft (210) to fasten the flapper (110) to the shaft (210).

Abstract: An inlet throttle (100) in provided. The inlet throttle (100) comprises a housing (110) with an aperture (112) adapted to channel a flow stream through the housing (110), a flapper (120) disposed inside the aperture (112) and rotatably coupled to the housing (110) along an axis of rotation (X), and two actuators (130a,b) with drive shafts (132a,b) coupled to opposite ends of the flapper (120) such that the drive shafts (132a,b) rotate coaxial with the axis of rotation (X).

Abstract: A configurable actuation-orientation valve (100) includes a valve body (120) including a valve bore (126) and a coil (180), a first port (101) and a third port (103) located at a first end (111) and a second port (102) located at a second end (112), a pole piece (138), an armature (130) configured to move in response to energization of the coil (180), and a biasing device (135) between the pole piece (138) and the armature (130). When the biasing device (135) is selected to provide a normally-closed biasing force to the armature (130) then the configurable actuation-orientation valve (100) comprises a normally-closed (NC) valve and when the biasing device (135) is selected to provide a normally-open biasing force to the armature (130) then the configurable actuation-orientation valve (100) comprises a normally-open (NO) valve.

Abstract: A solenoid (30) is provided. The solenoid (30) includes a magnetic core (304). The solenoid (30) also includes a pole piece (305) positioned substantially coaxially with the magnetic core (304). An over-molded component (303) is provided that is over-molded around at least a portion of the magnetic core (304) and at least a portion of the pole piece (305).

Abstract: A valve (103) is provided. The valve (103) comprises a housing (104) defining an internal bore (209) and a plurality of fluid ports (107a, 107b, 108a, 108b). The valve (103) further comprises a rotatable spool (210) positioned within the internal bore (209) and rotatable about a longitudinal axis (X-X). A first canted seal (217) is provided that is positioned on the rotatable spool (210) at an angle (?) with respect to the longitudinal axis (X-X). A second canted seal (218) is also provided that is positioned on the rotatable spool (210) at an angle (?) with respect to the longitudinal axis (X-X).

Abstract: A tire pressure control system (100) for a self-inflating tire includes a left coupling conduit (128) in fluid communication with a left tube end (104) of a peristaltic pump tube (102), a right coupling conduit (129) in fluid communication with a right tube end (105), a bypass conduit (130) extending between and coupling the left coupling conduit (128) and the right coupling conduit (129), and a bypass valve (150) configured to block the bypass conduit (130) when the tire pressure is less than a predetermined target pressure. When the bypass valve (150) substantially blocks the bypass conduit (130), then pressurized air generated in the peristaltic pump tube (102) is forced into the self-inflating tire. When the bypass valve (150) does not block the bypass conduit (130), then air is allowed to circulate within the peristaltic pump tube (102).

Abstract: A parking brake interlock is provided according to the invention. The parking brake interlock includes a parking brake inlet configured to receive a parking brake air supply, a service brake inlet configured to receive a service brake air supply, an exhaust port, and an interlock valve mechanism in communication with the parking brake inlet, the service brake inlet, and the exhaust port. The interlock valve mechanism is configured to exhaust the parking brake air supply if the service brake air pressure is not received. The interlock valve mechanism is further configured to hold the parking brake air supply in order to generate a parking brake air pressure if the service brake air pressure is received.

Abstract: A lift axle control valve (200) for controlling a vehicle lift axle is provided. The valve (200) includes a vehicle port (103) configured to receive a vehicle pressure and a suspension port (106) configured to receive a suspension pressure. The valve (200) is configured to receive a lift axle control signal, actuate the lift axle control valve (200) to connect one or more lift bag output ports (121) to the vehicle port (103) and to connect one or more load bag output ports (131) to the vent port (118) if the lift axle control signal comprises a lift command, and actuate the lift axle control valve (200) to connect the one or more load bag output ports (131) to the suspension port (106) and connect the one or more lift bag output ports (121) to the vent port (118) if the lift axle control signal comprises a load command.

Abstract: A valve (103) is provided. The valve (103) comprises a housing (104) defining an internal bore (209) and a plurality of fluid ports (107a, 107b, 108a, 108b). The valve (103) further comprises a rotatable spool (210) positioned within the internal bore (209) and rotatable about a longitudinal axis (X-X). A first canted seal (217) is provided that is positioned on the rotatable spool (210) at an angle (?) with respect to the longitudinal axis (X-X). A second canted seal (218) is also provided that is positioned on the rotatable spool (210) at an angle (?) with respect to the longitudinal axis (X-X).

Abstract: The present invention relates to a leveling valve including a first port, a second port, a third port, a valve, and a clutch. The clutch is provided with an engaged position and a disengaged position. At least a portion of the clutch may move relative to the valve when the clutch is in the disengaged position. The clutch moves the valve when the clutch is in the engaged position. The valve is movable between a first position, a second position, and a third position. When the valve is in the first position, the valve blocks a first pathway, which extends from the first port, from connecting with a second pathway, which extends from the second port. When the valve is in the second position, the valve allows the first pathway to connect with the second pathway. When the valve is in the third position, the valve allows the second pathway to connect with a third pathway, which extends from the third port.

Abstract: A force amplifier comprising a housing is provided. The force amplifier includes a force assembly positioned in the housing. The force assembly comprises an input force component, an output force component, and an intermediate force component rigidly coupling the input force component to the output force component. An assist piston is positioned in the housing. The assist piston is coupled to the force assembly. A regulating piston is positioned in the housing. The regulating piston is coupled to the force assembly. The regulating piston controls the supply of a pressurized fluid acting on the assist piston.

Abstract: A lift axle control valve (200) for controlling a vehicle lift axle is provided. The valve (200) includes a vehicle port (103) configured to receive a vehicle pressure and a suspension port (106) configured to receive a suspension pressure. The valve (200) is configured to receive a lift axle control signal, actuate the lift axle control valve (200) to connect one or more lift bag output ports (121) to the vehicle port (103) and to connect one or more load bag output ports (131) to the vent port (118) if the lift axle control signal comprises a lift command, and actuate the lift axle control valve (200) to connect the one or more load bag output ports (131) to the suspension port (106) and connect the one or more lift bag output ports (121) to the vent port (118) if the lift axle control signal comprises a load command.