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Viscous fan drive systems having fill and scavenge control

A technology of fluid flow and studio, applied in the direction of transportation and packaging, engine components, engine cooling, etc., can solve the problems of impact, fan drive regulation robustness limitation, fan driver lack of active control of viscous fluid, etc., to achieve regulation robustness short effect

Inactive Publication Date: 2009-09-16
BORGWARNER INC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Since engagement of the fan driver depends on the amount of viscous fluid entering the working chamber through the injection port(s) at a given input speed and the position of the valve arm, the regulatory robustness of the fan driver is inherently limited because the fan The drive lacks active control over the rate at which viscous fluid exits the fluid working chamber
As a result, the engagement, disengagement and pumping performance of the fan drive, especially at low input speeds, is adversely affected

Method used

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  • Viscous fan drive systems having fill and scavenge control
  • Viscous fan drive systems having fill and scavenge control
  • Viscous fan drive systems having fill and scavenge control

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Embodiment Construction

[0026] In the following figures, the same reference numerals will be used to refer to the same components. Although the invention can be advantageously used in clutch arrangements having different configurations and uses, it is particularly advantageous for use in an electronically and / or mechanically controlled fluid connection of the type used to drive a radiator cooling fan of an internal combustion engine. Although the fluid connection device of the present invention is described in connection with a cooling fan for simplicity, it should be understood that the present invention is not limited to these applications and configurations.

[0027] Furthermore, various other embodiments are contemplated having different combinations of the features of the invention described below, having some features other than those described herein, or even lacking one or more of these features. As such, it should be understood that the invention may be implemented in other and different sui...

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Abstract

An engagement system (10) for a fluid-coupling device (9) may include a first engagement member (31) and a second engagement member (15) that is in operation with the first engagement member (31). A working chamber (33) is disposed between and at least partially defined by the first engagement member (31) and the second engagement member (15). The working chamber (33) has an inlet port (118) and an outlet port (120). A fluid reservoir (35) is fluidically-coupled to the working chamber (33). A scavenge valve (11) is coupled between the working chamber (33) and the fluid reservoir (35) and adjusts the fluid flow through the outlet port (120). An engagement system (10) for a fluid-coupling device (9) may in addition to or alternatively include a working chamber (33) that includes a working chamber inlet port (118) that is along an outer perimeter (126) of the first engagement member (31). A valve (11) is coupled between the working chamber (33) and the fluid reservoir (35) and adjusts the fluid flow through the working chamber inlet port (118).

Description

technical field [0001] The present invention generally relates to fan drive systems. More particularly, the present invention relates to viscous fan drives and operative engagement and disengagement control techniques associated therewith. Background technique [0002] The invention relates to a fluid connection device of the type comprising both a fluid working chamber and a fluid storage chamber. These fluid connections typically have valve arrangements that control the amount of fluid flowing into and out of their working chambers. These devices may be electronically or mechanically controlled. [0003] Although the invention may be advantageously used in fluid connection arrangements having different configurations and uses, it is particularly advantageously used in connection arrangements of the type that drive a radiator cooling fan of an internal combustion engine, and the invention will be performed in connection with this type illustrate. [0004] Viscous shear ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D35/02
CPCF16D35/024F16D35/023Y10T137/0318F16D35/02F16D35/00F01P5/02
Inventor 里克·L·博耶
Owner BORGWARNER INC
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