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A gear knocking noise optimization method for dual-clutch gearboxes

A dual-clutch, optimization method technology, applied in the direction of gear vibration/noise attenuation, belt/chain/gear, instruments, etc., can solve the problem of gearbox gear knocking noise, etc., so as to improve the judgment accuracy and improve the gear knocking noise. quality effect

Active Publication Date: 2022-06-17
智新科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the defects existing in the prior art, the purpose of the present invention is to provide a method for optimizing the knocking noise of the gears of the dual-clutch gearbox, which can solve the problem that the pre-shift strategy of the dual-clutch gearbox will cause the knocking noise of the gearbox gears. click noise problem

Method used

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  • A gear knocking noise optimization method for dual-clutch gearboxes
  • A gear knocking noise optimization method for dual-clutch gearboxes
  • A gear knocking noise optimization method for dual-clutch gearboxes

Examples

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Embodiment approach

[0095] 1. A vehicle equipped with a dual-clutch gearbox is driving on the washboard road with a small accelerator at a speed of 20-30km / h (3 gears of the gearbox are preselected to 2nd gear), and there is obvious gear knocking noise.

[0096] Through the noise evaluation, vibration noise data and corresponding TCU data of the vehicle on this road, the gear knocking noise threshold L under this working condition is calibrated according to the above method 32 is 8rpm. Set the calibration value here in the gearbox TCU of this project according to this threshold, so that when the wheel speed range MD of the left and right driving wheels is greater than or equal to 8rpm, the gearbox TCU is instructed to activate the pre-selected neutral strategy; when the driving wheel speed range MD is less than At 8rpm, the gearbox TCU is instructed to maintain the original shift strategy, that is, to restore the pre-selection strategy, and the quality of the gear knocking sound is better improve...

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Abstract

The present invention relates to the technical field of gearbox vibration and noise analysis, in particular to a method for optimizing the gear knocking noise of a dual-clutch gearbox. Wheel speed extreme difference; according to the calibrated minimum driving wheel speed extreme difference of each pre-selected gear, judge whether to change the pre-selection strategy when the pre-selected gear is selected, so as to eliminate the gear knocking noise. Establish the correlation between the driving wheel speed range and the gear knocking noise of the dual-clutch gearbox through calibration, and calculate the corresponding driving wheel speed range threshold, which can be integrated into the transmission TCU to guide the optimization of shifting strategies and improve Gear rattling noise quality. It can solve the problem in the prior art that the pre-shift strategy of the dual-clutch gearbox can cause knocking noise of the gearbox gears.

Description

technical field [0001] The invention relates to the technical field of gearbox vibration and noise analysis, in particular to a method for optimizing gear knocking noise of a dual-clutch gearbox. Background technique [0002] Gear knocking noise is one of the main noises of the gearbox, which mainly occurs in the unloaded gear pair. Because the driving gear is stimulated by the input speed / torque fluctuation, the idle driven gear with backlash under the "no load" condition cannot be strictly Gear knock occurs following transient speed fluctuations of the driving gear. Gear knocking noise is different from other transmission system noises due to its obvious broadband noise characteristics, which can easily make drivers and passengers feel restless and mistakenly believe that the gearbox is faulty. The solution of this problem directly affects vehicle quality and NVH. [0003] NVH is the English abbreviation of Noise, Vibration and Harshness. This is a comprehensive issue to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M13/021G01M13/028F16H57/00
CPCG01M13/021G01M13/028F16H57/0006F16H2061/0075
Inventor 张飞兵杨波乔萌朱丽丹韩涛崔龙杰张章
Owner 智新科技股份有限公司