Turbocharger comprising a regulating unit
A turbocharger has a regulating unit for controlling the output of the turbocharger. The regulating unit can be adjusted by an actuator. The actuator is connected to the regulating unit by way of an actuating member and a lever. The actuating member and the lever are interconnected by way of a screw-nut element.
1. An exhaust-gas turbocharger assembly, comprising:
an exhaust-gas turbocharger;
a regulating unit for regulating a power of said exhaust-gas turbocharger, said regulating unit having an operation lever assigned thereto and mounted for pivoting about a first articulated connection;
an actuator for operating said regulating unit, said actuator having a thrust rod for operating said regulating unit via said operation lever, said thrust rod being formed with an external thread;
an adjustment member connecting said thrust rod with said operation lever, said adjustment member having an attachment element, being formed with an internal thread and being coupled to said operation lever by way of a second articulated connection, and a screw-nut element;
said screw-nut element having a first threaded region coupling said screw-nut element to said attachment element, and a second threaded region coupling said screw-nut element to said thrust rod; and
said first threaded region being an external thread formed on a projection piece of said screw-nut element meshing with the internal thread of said attachment element and said second threaded region being an internal thread formed in a passage bore of said screw-nut element meshing with the external thread of said thrust rod.
2. The exhaust-gas turbocharger assembly according to claim 1 , wherein said screw-nut element is formed with an operation region configured for the engagement of a tightening tool.
3. The exhaust-gas turbocharger assembly according to claim 1 , wherein said each of said internal thread in the passage bore and said external thread on the projection piece of the screw-nut element has a codirectionally running thread formed with the same pitch or with different pitch.
4. The exhaust-gas turbocharger assembly according to claim 1 , wherein said actuator is an electromechanical actuator and wherein a pitch of said internal thread of said screw-nut element equals a pitch of said external thread of said screw-nut element.
5. The exhaust-gas turbocharger assembly according to claim 3 , wherein said actuator is a pneumatic actuator, and wherein a pitch of said internal thread of said screw-nut element is different from a pitch of said external thread of said screw-nut element.
6. The exhaust-gas turbocharger assembly according to claim 1 , which comprises a lock nut bracing said screw-nut element.
7. The exhaust-gas turbocharger assembly according to claim 1 , wherein said attachment element is fixedly connected to a threaded piece disposed to mesh with said external thread formed on said projection piece of said screw-nut element.
8. The exhaust-gas turbocharger assembly according to claim 7 , wherein said threaded piece is a nut.
9. The exhaust-gas turbocharger assembly according to claim 1 , wherein said screw-nut element is braced by a locking nut, said locking nut being connected to said thrust rod.