COOLANT PUMP FOR INTERNAL COMBUSTION ENGINE

摘要

An internal combustion engine (2) relies on a liquid coolant to dissipate heat that is produced by combustion within the engine. A coolant pump (16), which is driven by the engine itself, circulates the coolant through passageways (14) in the engine. The pump includes a clutch, such as a magnetic particle clutch (36) or a magnetorheological clutch, that relies on a magnetic field to control the speed at which the pump operates and the rate that it circulates the coolant, so that a variable speed ratio exists between the speed of the engine and the speed of the pump.