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US 7,311,624 B2Granted
Apparatus for controlling speed of a water pump
AssigneeHyundai Motor Company
InventorChong Won Lee
Life of this patent
Estimating the term…
Abstract
For enhancement of heating performance of a vehicle, operating speed of a water pump of an engine is varied in accordance with engine operation conditions, so a speed of a coolant temperature increase can be accelerated when needed.
Claims4
An apparatus for controlling speed of a water pump of an engine, comprising:
- a variable pulley including first and second bodies slidably formed on an exterior side of a driving shaft of the water pump;
- a belt wound between the first and second bodies, for connecting the variable pulley to a crank pulley;
- actuators disposed at both sides of the variable pulley, for activating sliding operation of the first and second bodies such that a wound height of the belt is varied, the wound height being an operating radius of the variable pulley;
- and
- an electronic control unit for controlling the actuators such that the operating radius of the variable pulley is varied in accordance with condition of a heater switch and the engine.
2 more elements
Dependencies are inferred from the claim text.