TC中英文说明书(涡轮增压器).pptx

Turbo Charger Contents General summary Characteristics of the assembly System Auxiliary equipment Service experience Turbo ChargerIn internal combustion engines a turbocharger is a turbine driven forced induction compressor powered by heat from exhaust gases. General (operating condition)Turbine side Temp. ; up to 650℃Compressor side Temp. ; over 200℃The high temperatures lead to extreme thermal loads of the material at many locationsThe centrifugal forces are extremely high ; Forces of several hundred KN can easily apply at the foot of the turbine blade.Centrifugal stress at the foot of the turbine blade Load on connections and FlangesConnection of the Exhaust Gas Pipe (Engine Side)Connection of the Exhaust Gas Pipe (System Side)Connection of the Charge Air Pipes Structure silencerpatented diffusorsealing air, oil pipingand venting systemcontainment areacasings nozzle ringcompressor wheelturbine bladesthrust bearingplain bearingsflow cross sections AirExhaust gasCharacteristics of the Assemblies1. Compressor Wheel and Turbine Rotor Characteristics of the Assemblies1. Compressor Wheel and Turbine RotorThe highly stressed, one-part compressor wheel consists of a forged and milled-to-shape aluminum block that withstands the high circumferential velocities of up to 560 m/s.The compressor wheel and the turbine rotor are both seated together on the rotor shaft.The rotor shaft runs in plain bearings which enable precise centering of the rotor shaft.They have a high damping effect due to the hydraulic oil film, and are also insensitive to vibrations and imbalance. In order to ensure quiet running even at high speeds, both radial bearings are designed as floating bearings. Characteristics of the Assemblies2. Turbine Blades and nozzle ringTurbine blade ; converse velocity energy into kinetic energyNozzle ring ; the direction of the exhaust gas turn to the turbine blade Nozzle ringTurbine bladeThe development of all casings and flow parts is supported by 3D Nervier-Stokes