| 摘要 |
The invention relates to turbochargers (10) with a waste gate valve (14), a compressor (12), a turbine (16), a turbine housing (18), a bypass channel (22) for bypassing the turbine (16), a bypass channel portion (23) which is formed in the turbine housing (18), an actuator housing (36), an electric motor (54) which is arranged in the actuator housing (36), a transmission (46) which is arranged in the actuator housing (36), an output shaft (32) of the transmission (46), and a regulating element (26) which is coupled to the output shaft (32) and controls an opening cross-section of the bypass channel (22). In order to increase the service life of such turbochargers, the actuator housing (36) is formed separately and is secured to the turbine housing (18), said actuator housing (36) having a separate coolant channel (88, 92, 94, 96, 98, 100) with a coolant inlet nozzle (84) and a coolant outlet nozzle (86). In this manner, a reliable controllable cooling function of the electric components of the waste gate valve is ensured. |
