A wastegate assembly for a turbocharger includes a valve element having a valve body and a shaft extending away from the valve body. A spindle is coupled to the shaft for moving the valve element between a first and a second position to control the flow of exhaust gas to a turbine housing interior of the turbocharger. A washer is coupled to the shaft such that the spindle is disposed between the valve body and the washer for retaining the spindle to the shaft. A biasing member is disposed between the spindle and the washer, has a trough portion extending toward the spindle, and has a crest portion extending toward the washer. At least one of the spindle and the washer define a seating groove and the biasing member extends at least partially into the seating groove to seat and prevent rotation of the biasing member.

A wastegate assembly for a turbocharger includes a valve element having a valve body and a shaft extending away from the valve body. A spindle is coupled to the shaft for moving the valve element between a first and a second position to control the flow of exhaust gas to a turbine housing interior of the turbocharger. A washer is coupled to the shaft such that the spindle is disposed between the valve body and the washer for retaining the spindle to the shaft. A biasing member is disposed between the spindle and the washer, has a trough portion extending toward the spindle, and has a crest portion extending toward the washer. At least one of the spindle and the washer define a seating groove and the biasing member extends at least partially into the seating groove to seat and prevent rotation of the biasing member.

An electronic expansion valve includes a valve component and a stator component; the valve component includes a valve body assembly, a valve core, a threaded transmission assembly and a rotor; the valve body assembly is provided with a valve port, and the valve core is driven by the threaded transmission assembly to control an opening of the valve port; a wear-resistant coating is arranged on a contact surface of at least one of components having relative movement of the electronic expansion valve, the wear-resistant coating is applied by spraying, and the wear-resistant coating has a thickness of 5 to 8 microns; and the material of the wear-resistant coating includes a molybdenum disulfide material and a polytetrafluoroethylene material.

An electronic expansion valve includes a valve component and a stator component; the valve component includes a valve body assembly, a valve core, a threaded transmission assembly and a rotor; the valve body assembly is provided with a valve port, and the valve core is driven by the threaded transmission assembly to control an opening of the valve port; a wear-resistant coating is arranged on a contact surface of at least one of components having relative movement of the electronic expansion valve, the wear-resistant coating is applied by spraying, and the wear-resistant coating has a thickness of 5 to 8 microns; and the material of the wear-resistant coating includes a molybdenum disulfide material and a polytetrafluoroethylene material.

A valve actuation mechanism comprises a housing, an actuation pin rotatably mounted within the housing and at least one torque spring coupling the actuation pin to the housing for biasing the actuation pin from a first, inoperative rotational position towards a second, operative rotational position. The mechanism further comprises an actuation pin retaining element for selectively retaining the actuation pin in its first position, the retaining element being engageable with the actuation pin and the housing when the retaining element is in a retaining position so as to prevent rotation of the actuation pin towards its second position, and selectively disengageable from the housing to permit rotation of the actuation pin towards its second position. A locking element is provided for selectively preventing disengagement of the retaining element from the housing.

A valve actuation mechanism comprises a housing, an actuation pin rotatably mounted within the housing and at least one torque spring coupling the actuation pin to the housing for biasing the actuation pin from a first, inoperative rotational position towards a second, operative rotational position. The mechanism further comprises an actuation pin retaining element for selectively retaining the actuation pin in its first position, the retaining element being engageable with the actuation pin and the housing when the retaining element is in a retaining position so as to prevent rotation of the actuation pin towards its second position, and selectively disengageable from the housing to permit rotation of the actuation pin towards its second position. A locking element is provided for selectively preventing disengagement of the retaining element from the housing.

A high vibration, high-cycle, pulse width modulated (PWM) solenoid actuated valve assembly includes a valve housing and a solenoid actuator. The solenoid actuator is coupled to the valve housing and includes a solenoid housing, a bobbin assembly, a coil, an armature, a glide structure, an actuation rod, and an anti-rotation guide structure. The glide structure is disposed at least partially within the armature and between the armature and the inner surface of the yoke. The actuation rod is coupled to, and is axially movable with, the armature, it also extends into the valve housing and has a ball valve integrally formed thereon. The anti-rotation guide structure is disposed within the valve housing and surrounds at least a portion of the actuation rod. At least the actuation rod and the anti-rotation guide each have structural features formed thereon that mate with each other and prevent rotation of the actuation rod and the armature.

A high vibration, high-cycle, pulse width modulated (PWM) solenoid actuated valve assembly includes a valve housing and a solenoid actuator. The solenoid actuator is coupled to the valve housing and includes a solenoid housing, a bobbin assembly, a coil, an armature, a glide structure, an actuation rod, and an anti-rotation guide structure. The glide structure is disposed at least partially within the armature and between the armature and the inner surface of the yoke. The actuation rod is coupled to, and is axially movable with, the armature, it also extends into the valve housing and has a ball valve integrally formed thereon. The anti-rotation guide structure is disposed within the valve housing and surrounds at least a portion of the actuation rod. At least the actuation rod and the anti-rotation guide each have structural features formed thereon that mate with each other and prevent rotation of the actuation rod and the armature.

A cage assembly for a valve includes a hollow first member having a first end for operably connecting to a valve body and an opposed second end for receiving a hollow second member. The assembly includes the second member having a third end for receiving a hollow third member, the second member including first openings formed through a sidewall, and the third member having a fourth end for operably connecting to the valve body. The assembly includes when assembled inside the valve body, the first member, the second member and the third member forming an aligned second opening therethrough, the second opening having a uniform cross section, for slidably receiving a valve closure element for controlling a flow of fluid through the first openings during operation of the valve.

A cage assembly for a valve includes a hollow first member having a first end for operably connecting to a valve body and an opposed second end for receiving a hollow second member. The assembly includes the second member having a third end for receiving a hollow third member, the second member including first openings formed through a sidewall, and the third member having a fourth end for operably connecting to the valve body. The assembly includes when assembled inside the valve body, the first member, the second member and the third member forming an aligned second opening therethrough, the second opening having a uniform cross section, for slidably receiving a valve closure element for controlling a flow of fluid through the first openings during operation of the valve.