Garrett Transportation I Inc.

Alexandre Wirtzler

Cedric Karwat

Romain Guillot

Scott Grover Aguilar

Raphael Hettinger

Vincent Eumont

Bruno Weber

A foil bearing system includes a journal member with an internal groove and a foil arrangement. The foil arrangement includes at least one biasing foil and a top foil insert member. The at least one biasing foil is received between the journal member and the shaft in a radial direction with respect to the axis. The top foil insert member includes a top foil and a spine insert. The top foil includes an arcuate portion that is disposed between the at least one biasing foil and the shaft in the radial direction and that extends in a circumferential direction about the axis. The top foil includes an end that extends from the arcuate portion. The spine insert is received within the internal groove, and the spine insert is fixedly attached to the end of the top foil.

Journal foil bearing system with top foil insert member

A bypass valve assembly for a turbocharger includes a bypass valve having a valve stem rotatable about a valve stem axis for opening and closing the valve. The end of a first crank of an articulated two-bar linkage is connected to the valve stem. The end of a second crank of the linkage is connected to a cam follower engaged with a guide cam. An actuator provides motive force to the cam follower to proceed along the guide cam, which is configured to advance the cam follower along a guide path that is non-linear and non-circular arc, causing the two-bar linkage to rotate the valve stem. Valve stem angular displacement versus actuator stroke can be altered by modification of the shape of the guide path.

Turbocharger bypass valve and actuator assembly therefor having guided toggle

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Golbey, France

Alexandre Wirtzler