Turbocharger with cooled turbine housing, cooled bearing housing, and a common coolant supply

摘要

A turbocharger has a turbine housing and a bearing housing that is connected to the turbine housing. Coolant is supplied to the bearing housing via the turbine housing.

主权项

1. An exhaust-gas turbocharger, comprising:
a turbine housing formed with a coolant inlet, a cooling jacket inside said turbine housing, and a coolant outlet; a bearing housing connected to said turbine housing, said bearing housing having a coolant inlet, a cooling jacket inside said bearing housing, and a coolant outlet; a coolant inlet duct formed inside said turbine housing between said coolant inlet and said cooling jacket in said turbine housing; a coolant branch duct branching off from said coolant inlet duct and connected to said coolant inlet of said bearing housing, said coolant branch duct formed inside said turbine housing; a coolant outlet duct formed inside said turbine housing between said cooling jacket and said coolant outlet in said turbine housing; a coolant return duct formed inside said turbine housing and connected to said coolant outlet of said bearing housing; and said coolant return duct issuing into said coolant outlet duct formed inside said turbine housing between said cooling jacket and said coolant outlet thereof.