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open ended variable bleed solenoid (vbs) valve with inherent viscous damping

A viscous damping, solenoid technology, applied to elements with teeth, operating/release devices of valves, electromagnets with armatures, etc., can solve problems such as fluctuations in system parameter values, changes in flow opening size, instability, etc.

Inactive Publication Date: 2011-12-21
BORGWARNER INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When a pressure control solenoid responds to electrical and / or hydraulic system noise by being forced into an uncontrolled vibratory response, systems supplying fluid to vehicle components may become unstable and critical system parameter values may fluctuate in an undesired manner
Instabilities in system hydraulic vibrations can produce adverse valve performance characteristics that affect vehicle performance and / or reliability
For example, forces acting on a solenoid valve stem to destabilize it may cause variations in the size of the flow opening, resulting in irregular fluid flow through the valve and also irregular valve output pressure

Method used

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  • open ended variable bleed solenoid (vbs) valve with inherent viscous damping
  • open ended variable bleed solenoid (vbs) valve with inherent viscous damping
  • open ended variable bleed solenoid (vbs) valve with inherent viscous damping

Examples

Experimental program
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Effect test

Embodiment Construction

[0014] Figure 1 to Figure 1A A longitudinal cross-sectional view of a normally open, open ended, variable bleed solenoid valve 10 is depicted. The valve 10 has a solenoid portion 24b that includes a housing 104 that houses a bobbin 16 having a coil of wire wound on the bobbin 16. 18.

[0015] The wires are terminated on lugs or terminals 100 which are connected to the bobbin. The bobbin also includes features that allow a structural connection to a splice shield 102 that surrounds tabs 100 to protect them and isolate them from the rest of the helical tubing. Partially isolated to help prevent electrical short circuits. A housing 104 formed of steel with high magnetic permeability or another material surrounds the coil 18 and bobbin 16 and is used to transmit magnetic flux to the magnetic circuit when the solenoid valve is energized. other parts. When coil 18 is energized, a magnetic field is generated in solenoid portion 24b. The solenoid portion 24b also has a valve se...

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PUM

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Abstract

A solenoid valve (10) includes a solenoid portion (24b) and a hydraulic portion (24a) having a valve housing (26) connectable to the solenoid portion (24b). A valve stem (34) mounted on the housing (26) includes a first end in the solenoid portion (24b) and a second end in the hydraulic portion (24a). The valve stem (34) includes a passage (36) disposed therethrough to allow fluid flow through the valve stem (34). A valve (38) is positioned on the first end of the stem (34). When the stem (34) moves in a first direction, the valve (38) moves toward a closed position, and when the stem (34) moves in a second direction, the valve (38) moves toward an open position .

Description

technical field [0001] This invention relates to solenoid operated hydraulic control valves. Background technique [0002] The use of solenoid-operated hydraulic control valves in hydraulic control systems is well known. One application of such a valve is in electronically controlled automotive automatic transmissions. In an automatic transmission, a solenoid pressure control valve usually controls many important system parameters and the valve's behavior, which should be consistent and stable. [0003] When the valve is used in such an application, there are many potential sources of hydraulic and / or electromechanical "noise" in the fluid system that can induce or aggravate the system by, for example, causing harmonic resonance in related system components. of instability. When a pressure control solenoid responds to electrical and / or hydraulic system noise by being forced into an uncontrolled vibratory response, systems supplying fluid to vehicle components may become u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K31/06F16K51/00H01F7/16F16H61/00F16H57/02
CPCF16H61/0251H01F7/1607F16K31/0651
Inventor W.D.海恩斯M.T.奥尔伯特
Owner BORGWARNER INC