| 摘要 |
PURPOSE: An electromagnetic clutch for a water pump and an operation control method are provided to smoothly operate a water pump even if the revolution per minute(RPM) of an engine is high as the operation of a field coil assembly is differently controlled according to the temperature of cooling water and the RPM of the engine. CONSTITUTION: An electromagnetic clutch for a water pump comprises a pulley(100), a disc(20), a hub assembly(30), a permanent magnet(300), and a filed coil assembly(200). The pulley is connected to an engine and is rotated by receiving the driving force of the engine. The disc is rotated by the rotating force of the pulley while being selectively contacted to the pulley. The hub assembly is rotated by the rotation of the disc to operate a water pump. The permanent magnet is installed in the pulley to provide suction magnetic flux. The field coil assembly is installed in the pulley and selectively receives voltage according to the RPM of the engine and temperatures of cooling water. The field coil assembly selectively provides suction magnetic flux in a direction same as the suction magnetic flux of the permanent magnet. [Reference numerals] (AA) Front; (BB) Back |
