Garrett Transportation I Inc.

Xiaolei Jin

Yunbin Gong

Huan Wang

Bin Zhu

Xinlei Qiu

John Gong

Henry Guo

Jinjiang Shao

Judy Wang

A waste gate assembly for a turbocharger includes a valve member formed by a valve shaft and an arm attached to an end of the shaft, the arm defining a through bore, an inner surface of the through bore defining an arm groove therein. A poppet for the valve has a pin whose outer surface defines a pin groove. A generally polygonal retaining ring of elastically deformable wire is installed partially in the arm groove and partially in the pin groove to retain the poppet on the pin, thereby attaching the poppet to the arm of the valve member. An anti-rotation feature prevents relative rotation of the poppet about the pin axis. Vertices of the retaining ring are in the arm groove, while sides of the retaining ring are in the pin groove. Once the retaining ring is pre-installed in the arm groove of the arm, the arm can be assembled to the poppet by a push-to-connect process.

Turbocharger waste gate poppet valve connected to rotary valve shaft by arm and retaining ring

A crank and linkage assembly for a component of a turbocharger includes a linkage having an end defining a through bore, an inner surface of the through bore defining a linkage groove therein. The crank has a pin whose outer surface defines a pin groove. A generally polygonal retaining ring of elastically deformable wire is installed partially in the linkage groove and partially in the pin groove to retain the linkage on the pin while allowing the linkage to rotate about the pin axis. Vertices of the retaining ring are in the linkage groove, while sides of the retaining ring are in the pin groove. Once the retaining ring is pre-installed in the linkage groove, the assembly can be assembled by a push-to-connect process.

Push-to-connect crank and linkage assembly for a turbocharger, and associated assembly method

A turbocharger system includes a wastegate with a bypass passage and a valve assembly. The valve assembly includes a poppet with an axis. The valve assembly also includes an arm that is attached to the poppet and that supports movement of the poppet between a closed position and an open position. Additionally, the valve assembly includes a plurality of biasing members that are disposed within a joint between the poppet and the arm. The plurality of biasing members provides a biasing force directed in a radial direction relative to the axis. The plurality of biasing members is disposed substantially symmetrically with respect to a first radial line of symmetry and a second radial line of symmetry.

Wastegate valve assembly with biasing members

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Shanghai, China

Xiaolei Jin