Coolant pump for internal combustion engine

Inactive Publication Date: 2007-02-01
THE TIMKEN CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But that often does not produce optimal cooling for the engine or best supply coolant to either the radiator or the heater.
For example, when an automobile engine operates at highway speeds for extended time and then is brought to idle at a stop, or to lower speeds in city driving, the flow of coolant may not be sufficient enough to dissipate the residual heat remaining from the high-speed operation.
Also, at start up the engine may not circulate enough coolant through the heater.

Method used

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  • Coolant pump for internal combustion engine
  • Coolant pump for internal combustion engine
  • Coolant pump for internal combustion engine

Examples

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Embodiment Construction

[0009] Referring now to the drawings, an internal combustion engine 2 includes (FIG. 1) a block 4 that contains cylinders 6 in which pistons 8 reciprocate, and the pistons 8 rotate a crankshaft 10 from which power is delivered from the engine 2. Fuel burns in the cylinders 6 beneath a head 10 to produce that power, but the combustion also produces excess heat, which must be dissipated to protect the engine from destruction. To this end, the block 4 and the head 10, contain coolant passageways 14 through which a liquid coolant, such as a mixture of water and ethylene glycol, flows.

[0010] Indeed, the engine 2 itself powers a coolant pump 16 which circulates the coolant through the passageways 14 to extract the excess heat produced in the cylinders 6. The power to operate the coolant pump 16 derives from the crankshaft 6, which is equipped with a pulley 18 over which a belt 20 is trained. The belt 20 delivers power to the coolant pump 16 and other accessories as well.

[0011] Actually,...

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Abstract

An internal combustion engine relies on a liquid coolant to dissipate heat that is produced by combustion within the engine. A coolant pump, which is driven by the engine itself, circulates the coolant through passageways in the engine. The pump includes a clutch such as a magnetic particle clutch 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.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS [0001] Not Applicable. STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH [0002] Not Applicable. BACKGROUND OF THE INVENTION [0003] This invention relates in general to pumps, and more particularly to a coolant pump for an internal combustion engine, to an engine equipped with such a pump, and to a method of dissipating heat from such an engine. [0004] Many internal combustion engines rely on liquid coolants to dissipate heat that would otherwise destroy such engines. In the typical engine coolant passageways surround the cylinders of the engine and a water pump, driven by the engine itself, circulates the coolant through the passageways. In most engines, particularly those used to power automotive vehicles, the water pump also circulates the coolant through a radiator where the heat is transferred to air passing through the radiator. The water pump for this type of engine may also circulate the coolant through an additional heat exchanger in th...

Claims

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Application Information

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IPC IPC(8): F01P7/02F01P5/10
CPCF01P5/04F01P5/12F01P7/164F04D13/027F16D37/02F16D2037/002F04D13/022F01P7/16F04D13/02
InventorGRADU, MIRCEASCHLERNITZAUER, TIMOTHY L.
OwnerTHE TIMKEN CO