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Electronically controlled viscous fan drive with bushing

An electronic control, rotor technology, used in the control of coolant flow, clutch, engine components, etc.

Active Publication Date: 2011-05-18
BORGWARNER INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The present invention overcomes potential problems with existing viscous shear type fluid connections and provides an electronically controlled viscous fan drive system that prevents the system from being undesirably locked in the "on" state

Method used

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  • Electronically controlled viscous fan drive with bushing
  • Electronically controlled viscous fan drive with bushing
  • Electronically controlled viscous fan drive with bushing

Examples

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Embodiment Construction

[0019] Referring now to these drawings (which are not intended to limit the invention), figure 1 One preferred form of one type of fluid connection device 10 ("viscous fan drive") employing the present invention is shown. The fluid connection device 10 includes a cover member 12 and a body member 14 secured together by bolts, washers, or other securing means 16 to form a housing 20 having an interior cavity 22 . The body and cover member can also be secured together by a flip of the periphery of the cover member, as is well known in the art.

[0020] The fluid connection device 10 is attached to a bracket member 18 which is used to mount the fluid connection device at a desired location on the engine or other part of a vehicle or automobile. Electrical leads 19 are used to provide electrical power to the actuator 25 to actuate it.

[0021] The fluid connection device 10 is adapted to be driven by a liquid-cooled engine, which in turn drives a radiator cooling fan, neither o...

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PUM

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Abstract

A viscous shear fan drive mechanism for a cooling fan. A moveable valve disk is provided which controls the quantity of fluid in the operating chamber. An electronic actuation system activates piston and shaft members which move the valve disk against the bias of a return spring to open the fill holes, allow fluid communication between the reservoir and working chambers, and allow rotation of the cooling fan. Without activation of the electronic actuation system, the flow of fluid to the working chamber is prevented. A non-magnetic or insulating bushing member adjacent the piston and shaft members prevents the system from sticking in the actuation condition when power is eliminated.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to Application Serial No. 61 / 052,643, filed May 13, 2008, and entitled "Electronically Controlled Viscous Fan Drive With Bushing," which application is incorporated herein by reference. technical field [0003] The present invention relates to fan drive systems, and more particularly to electronically controlled viscous fan drive systems. Background technique [0004] The invention relates to a fluid connection device of the type comprising both a fluid operating chamber and a fluid reservoir chamber, and a valve arrangement for controlling the amount of fluid in the working chamber. [0005] Although the present invention may be used advantageously in a variety of fluid connections having different configurations and applications, it is particularly advantageous for use in connections of the type used to drive radiator cooling fans of internal combustion engines, and will incorporate ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01P5/04F01P7/08F16D35/02F04D25/02
CPCF01P7/042F04D25/022F16D35/024
Inventor J·P·梅
Owner BORGWARNER INC
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