A poppet valve with an integrated dampener is disclosed. In some embodiments, the valve includes a poppet guide with a stem and a hollow poppet is disclosed. The hollow poppet receives the poppet guide stem therein, thereby defining an internal cavity. The poppet is movable relative to the poppet guide to adjust the volume of the internal cavity. The poppet is also moveable relative to a valve seat between a seated position and an unseated position. The poppet may include a body with a seal groove and an elastic seal disposed within the seal groove. The seal is configured to engage the valve seat prior to the poppet body when the poppet moves toward the seated position. The valve may include a poppet guide pivot system that enables pivoting of the poppet guide and the poppet relative to an axial centerline of the valve.

A reciprocating piston pump includes a pumping chamber, an inlet valve through which fuel passes to enter the pumping chamber, a piston configured to pressurize the fuel entering the pumping chamber, an outlet valve through which the pressurized fuel passes to exit the pumping chamber, and a solenoid actuator assembly coupled to the piston. The solenoid actuator assembly includes a fixed stator, a coil, and a movable armature. The movable armature is configured to move toward a first end of the fixed stator in response to the coil being energized. The solenoid actuator assembly includes a magnetic flux path that passes substantially between the movable armature and the fixed stator via a radial gap and an axial gap that are defined at least in part by the first end of the stator. The movable armature is configured to move relative to the fixed stator to reduce the axial gap and to increase a magnetic flux through the radial gap such that a total axial force acting on the movable armature is substantially constant through a substantial portion of travel of the movable armature. The piston is configured to move to force the pressurized fuel out of the outlet valve in response to the axial gap changing in size as the movable armature moves relative to the fixed stator.

A lubrication system for an internal combustion engine includes a fluid flow control device at the outlet side of the pump that regulates pressure conditions at the outlet side of the pump upstream of the lubrication circuit in the engine. The fluid flow control device includes a chamber that is opened in response a fluid pressure exceeding a threshold to allow the fluid to pass from the outlet side of the pump back to the inlet side of the pump. The fluid flow control device also includes at least one elongated aperture in communication with the chamber for receiving fluid fed from the chamber and allowing the fluid in the chamber to flow to the inlet side of the pump.

A fluid end made of a housing and a plunger reciprocating therein. The plunger has a hollow bore formed therein, and a valve assembly situated on one end of the plunger. The plunger may have a sleeve situated within the bore that aids in the installation of the valve assembly. The plunger may have a second bore extending perpendicularly from the hollow bore. The first bore may be connected to an attachment piece which connects to a conduit. The conduit may then be connected to a manifold which is configured to provide a fluid to the plunger's bore. The housing may be made of a static section and a plurality of dynamic sections. The dynamic sections may thread into the housing. The static section may be made of two pieces to aid with installation of a dynamic seal.

Described herein are embodiments of systems and apparatuses that include a dart and/or a clutch for a dart plunger. In an exemplary embodiment, the clutch consists of a one-piece unit having a length, an outside diameter, and an inside diameter where at least a portion of the inside diameter is sized to create a frictional interface with a dart. The clutch may also include a gap, a slot, and/or a spiral cut. The dart may include a shaft having opposite ends and a shaft diameter that varies between the opposite ends.

A fluid end made of a housing and a plunger reciprocating therein. The plunger has a hollow bore formed therein, and a valve assembly situated on one end of the plunger. The plunger may have a sleeve situated within the bore that aids in the installation of the valve assembly. The plunger may have a second bore extending perpendicularly from the hollow bore. The first bore may be connected to an attachment piece which connects to a conduit. The conduit may then be connected to a manifold which is configured to provide a fluid to the plunger's bore. The housing may be made of a static section and a plurality of dynamic sections. The dynamic sections may thread into the housing. The static section may be made of two pieces to aid with installation of a dynamic seal.

A method is disclosed for removing/installing both the upper and lower valve seat in a fluid end for a high-pressure pump with a plurality of horizontal plunger bores and an equal amount of vertical suction bores. Vertical suction bore contains a valve seat below the plunger bore and a valve seat above the plunger bore. The lower valve seat can pass through the upper valve seat pocket and be removed from fluid end via plunger bore opening.

Described herein are embodiments of systems and apparatuses that include a dart and/or a clutch for a dart plunger. In an exemplary embodiment, the clutch consists of a one-piece unit having a length, an outside diameter, and an inside diameter where at least a portion of the inside diameter is sized to create a frictional interface with a dart. The clutch may also include a gap, a slot, and/or a spiral cut. The dart may include a shaft having opposite ends and a shaft diameter that varies between the opposite ends.

A piston pump configured to pump a fluid and including an inlet channel, an outlet channel, a piston, an armature, an elastic element, a first check valve, a piston chamber, a longitudinal axis, a winding support, and a coil. The piston is movably supported parallel to the longitudinal axis in a piston chamber and has a first face with a piston channel inlet, a second face with a piston channel outlet, and a piston channel connecting the piston channel inlet and the piston channel outlet. The piston is biased in a first axial direction by the elastic element. The first check valve is arranged in the piston channel. The coil has at least one winding arranged on the winding support. The inlet channel is configured to communicate with the piston channel inlet and the outlet channel is configured to communicate with piston channel outlet.

Described herein are embodiments of systems and apparatuses that include a dart and/or a clutch for a dart plunger. In an exemplary embodiment, the dart plunger includes a dart adapted to move between a first position and a second position and also between a maximum closed position and a minimum closed position. Varying diameters of the dart enable the clutch to variably retard movement of the dart between its first, second, maximum, and minimum positions.