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US 2014/0174075 A1Published application
Actuator shaft boot
AssigneeBorgWarner Inc.
InventorAlexandre Garcia Alcaraz
Life of this patent
Estimating the term…
Abstract
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.
Claims15
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).
1 more element
Dependencies are inferred from the claim text.