Coolant pump for cooling circuit of internal combustion engine, has planetary gear arranged between pump shaft and belt drive, where planetary gear has internal gear which is connected with drive wheel of belt drive in fixed manner

摘要

The pump (1) has a pump shaft (4) connected with an impeller in a fixed manner, where the shaft is connected with a crankshaft of an internal combustion engine by using a continuous belt drive. A planetary gear (5) is arranged between the shaft and the drive. The planetary gear has an internal gear (7) which is connected with a drive wheel of the drive in a fixed manner. The planetary gear is coupled with an electrical driving motor (11). The motor drives a sun wheel (8) or a planet wheel carrier (9) of the planetary gear. A self-locking transmission is arranged between the motor and the gear.