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Apparatus and method for operating a clutch in a transmission

A technology for clutches and transmissions, which is applied in clutches, mechanical equipment, transportation and packaging, and can solve problems such as vibrations

Inactive Publication Date: 2015-12-16
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the case of wet clutches, judder is more likely when the fluid degrades

Method used

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  • Apparatus and method for operating a clutch in a transmission
  • Apparatus and method for operating a clutch in a transmission
  • Apparatus and method for operating a clutch in a transmission

Examples

Experimental program
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Embodiment Construction

[0078] Referring now to the drawings, which are shown for the purpose of illustrating certain exemplary embodiments only and not for the purpose of limiting said exemplary embodiments, figure 1 is a schematic diagram of an exemplary six-speed dual clutch transmission (DCT) 10 in accordance with the present invention. The DCT 10 selectively interconnects a torque machine 7 , such as an internal combustion engine or an electric motor, to the vehicle's powertrain to provide tractive effort to propel the vehicle. A DCT includes a range of gear ratios representing torque multiplication factors for supplying a certain amount of torque to the powertrain. A DCT can have multiple forward and reverse gears. DCT10 can be called by the number of forward gears. Thus, for the six-speed DCT 10 , the DCT 10 has six forward gears with representative sequentially higher gear numbers from first to sixth, respectively, and a single reverse gear. The torque multiplication factor decreases as th...

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PUM

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Abstract

A method to control a clutch in a transmission includes monitoring a frequency response of the clutch including monitoring a response repeating one time per revolution of the clutch a response repeating more than one time per revolution of the clutch. A ratio of the response repeating more than one time per revolution of the clutch to the response repeating one time per revolution of the clutch is determined and compared to a first threshold ratio. A likely shudder condition is indicated based upon the comparing.

Description

technical field [0001] The present invention relates to a friction based torque transfer device. Background technique [0002] The statements in this section merely provide background information related to the present disclosure. Accordingly, such statements are not intended to constitute an admission of prior art. [0003] In a vehicle, there are multiple devices, or clutches, that utilize friction plates to rotatably interconnect members to transmit torque from one device to another. A selectable ratio transmission transfers torque from a torque machine, such as an engine or a motor, to a powertrain to provide motive power for a vehicle. Transmissions offer multiple gear ratios to increase or decrease the amount of torque delivered to the powertrain. [0004] The transmission may have manually selectable gears, typically referred to as a manual transmission, or have automatically selected gears, typically referred to as an automatic transmission. In vehicles equipped ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H61/02F16H61/12F16H61/688
CPCF16H61/12B60Y2300/186F16D48/06F16D2500/1045F16D2500/1086F16D2500/30403F16D2500/30421F16D2500/30814F16D2500/3163F16D2500/50293F16D2500/7041F16D2500/70426F16D2500/70428F16D2500/7101F16H61/688F16H2061/1208
Inventor G.莫杜霍维奇M.B.维奥拉
Owner GM GLOBAL TECH OPERATIONS LLC