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Automotive magnetic shield

A technology of motor vehicle and shielding system, which is applied in the direction of magnetic field/electric field shielding, mechanical drive clutch, non-mechanical drive clutch, etc., and can solve the problem of incorrect measurement flux of sensors

Active Publication Date: 2015-11-04
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in some environments it is possible that other nearby components emit magnetic flux, which causes the sensor to incorrectly measure the flux emanating from a given magnet
While current linear displacement sensors are useful for their intended purpose, there is room in the prior art to improve linear displacement sensor systems that reduce or eliminate magnetic flux disturbances in areas of the transmission where different components may exhibit magnetic properties

Method used

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  • Automotive magnetic shield
  • Automotive magnetic shield
  • Automotive magnetic shield

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Embodiment Construction

[0070] The following description is merely exemplary in nature and is not intended to limit the invention, application or use.

[0071] Referring to FIG. 1 , a torque transmitting device for a dual input transmission (not shown) is indicated generally at 10 . The torque transmitting device 10 is, for example, a dual clutch arranged in a powertrain of a vehicle. Typically, a vehicle powertrain includes an engine and a transmission. In the present embodiment, the transmission is a dual input transmission in which torque is transmitted from the engine via an input member such as the crankshaft 11 to the transmission including a first input shaft 12 and a second input shaft 14 through selective operation of the torque transmitting device 10 the two input shafts. The second input shaft 14 is a cylindrical (or hollow) shaft coaxial with the first input shaft 12 and covering the first input shaft 12 . The torque transmitting device 10 is arranged in a transmission housing or bell ...

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PUM

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Abstract

A linear magnetic sensor shield system comprises first and second shield parts. The system may include first and second field sensor assemblies, each having field sensors disposed therein. The first shield part may be disposed adjacent to a first side and a third side of the first field sensor assembly, and the second shield part may be disposed adjacent to a second side of the second field sensor assembly. The shield parts may be formed of mu metal, by of example, or they may have a curved shape or a thickness in the range of about 0.015 inch to about 0.030 inch. A torque transmitting device is also provided.

Description

technical field [0001] The present invention relates to magnetic sensor systems, and more particularly to shielding systems for magnetic sensor systems in automotive applications. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and may or may not constitute prior art. [0003] Transmissions and other powertrain components in motor vehicles are complex mechanisms controlled by hydraulic systems and electronic control modules. In order to provide proper control, it is desirable to have feedback on the operating conditions and performance of the transmission while the transmission is operating. function. For example, it is often desirable to determine the engagement conditions of clutches used in torque transmitting devices such as dual clutch transmissions. Accordingly, one or more linear displacement sensors are used to measure the relative position of the clutch to determine the engagemen...

Claims

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Application Information

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IPC IPC(8): H05K9/00
CPCG01R33/0076F16D21/06F16D2021/0669F16D2300/18G01D5/14G01R33/0047G01D5/145G01D5/24433F16D25/082F16D25/083F16D25/10
Inventor D.T.斯塔克D.J.史密斯T.A.佩里J.C.索特纳
Owner GM GLOBAL TECH OPERATIONS LLC