TURBO-SUPERCHARGER SUPERCHARGING PRESSURE LEVER MECHANISM ASSEMBLY UNIT, TURBO-SUPERCHARGER HOUSING FOR SUCH UNIT, VEHICLE OR ENGINE COMPRISING SUCH TURBO-SUPERCHARGER UNIT OR HOUSING

摘要

A turbocharger wastegate linkage assembly 100 having a wastegate valve 126 with valve closure 127 configured to selectively control the flow of exhaust gases through a turbocharger turbine, an actuator 140 to open or close the valve, and a wastegate linkage 145 configured to transfer movement of the actuator 140 to the valve 126, wherein the turbocharger wastegate linkage assembly 100 has an abutment 150 positioned such that a portion of the linkage 148 or the valve closure 127 abuts the abutment 150 when the wastegate valve 126 is in an open position, thereby reducing slack in the turbocharger wastegate linkage 145. The abutment 150 may be located on the turbocharger housing (160, Fig. 5), and the linkage 145 preferably comprises a link member 146 having the actuator 140 at one end 147a, the closure 127 at the other end 147b, and an intermediate pivot point 147c. The assembly may be activated by a magnet, preferably an electromagnet.