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Double-clutch gearbox gear knocking noise optimization method

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: 2021-08-13
智新科技股份有限公司
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  • Abstract
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  • 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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  • Double-clutch gearbox gear knocking noise optimization method
  • Double-clutch gearbox gear knocking noise optimization method
  • Double-clutch gearbox gear knocking noise optimization method

Examples

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Embodiment approach

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

[0096] Through the noise evaluation of the vehicle on this road, vibration and noise data and corresponding TCU data, the gear knocking noise threshold L under this working condition is calibrated according to the above method 32 8rpm. According to this threshold, set the calibration value here in the gearbox TCU of this project, so that when the wheel speed difference MD of the left and right driving wheels is greater than or equal to 8rpm, the gearbox TCU is instructed to activate the preselection neutral strategy; when the wheel speed difference MD of the driving wheels 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 ge...

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Abstract

The invention relates to the technical field of gearbox vibration noise analysis, in particular to a double-clutch gearbox gear knocking noise optimization method. The optimization method comprises the steps of calibrating a minimum driving wheel speed range capable of causing gear knocking noise under each pre-selected gear working condition; and according to the calibrated minimum driving wheel speed range of each pre-selected gear, judging whether a pre-selected gear strategy is changed or not when the gear is pre-selected so as to eliminate the gear knocking noise. The correlation between the driving wheel speed range and the gear knocking noise of the double-clutch gearbox is established through calibration, the corresponding driving wheel speed range threshold value is counted and can be integrated into a gearbox TCU, gear shifting strategy optimization is guided, and the gear knocking noise quality is improved. The method can solve the problem that gearbox gear knocking noise can be caused by double-clutch gearbox pre-shifting strategy cannot be solved in prior art.

Description

technical field [0001] The invention relates to the technical field of gearbox vibration and noise analysis, in particular to a method for optimizing the knocking noise of gears of a dual-clutch gearbox. Background technique [0002] Gear knocking noise is one of the main noises of gearboxes. It mainly occurs in non-loaded gear pairs. Because the driving gear is excited by input speed / torque fluctuations, the idle driven gear with backlash under the "no load" condition cannot be strictly controlled. Gear rattle occurs following the transient rotational speed fluctuations of the drive 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 think that the gearbox is faulty. The solution to this problem directly affects vehicle quality and NVH. [0003] NVH is the English abbreviation of noise, vibration and harshness (Noise, Vibrat...

Claims

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Application Information

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Patent Type & Authority Applications(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