ACTUATOR SHAFT BOOT

摘要

Wastegated turbochargers all use actuators to manipulate the wastegate valve which controls turbine wheel bypass of exhaust gas energy. The diaphragms in these actuators are susceptible to foreign material damage. This damage is minimized by the addition of a boot around the actuator shaft, preventing ingress of foreign materials and fluids which could be detrimental to actuator life.

主权项

1. A turbocharger with
a turbine in a turbine housing (2), a device within the turbine housing, an actuator (40) located outside the turbocharger for actuating the device within the turbine housing, the actuator including an actuator housing and an actuator shaft (50) extending from said housing and moveable between an extended position and a retracted position relative to the actuator housing, said actuator shaft operatively connected to said device within the turbine housing for actuation of said device, and a bellows seal (66) having a larger diameter end sealingly attached to the actuator housing and a smaller diameter end sealingly attached to the actuator shaft (50).