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Method for evaluating transmission gear rattling level using rattling exponential surface

A transmission gear and transmission technology, which is applied in the direction of instruments, electrical digital data processing, special data processing applications, etc., can solve the problem of not being able to evaluate the knocking level of the transmission body in advance

Active Publication Date: 2022-06-03
CHONGQING CHANGAN AUTOMOBILE CO LTD
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for evaluating the knocking level of transmission gears using a knocking exponential surface, which solves the problem that the knocking level of the transmission body cannot be evaluated in advance in the design stage of the transmission

Method used

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  • Method for evaluating transmission gear rattling level using rattling exponential surface
  • Method for evaluating transmission gear rattling level using rattling exponential surface
  • Method for evaluating transmission gear rattling level using rattling exponential surface

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Embodiment Construction

[0024] The application will be described in detail below in conjunction with the accompanying drawings.

[0025] see figure 1 , the method for evaluating the knocking level of transmission gears using knocking exponential surface shown, it includes the following steps:

[0026] S1. According to the gear layout and power transmission route of a certain gear of the transmission, establish a gear knocking mechanical model of the transmission in a certain gear, see figure 2 , in the established gear knocking mechanics model, only the speed ratio relationship is considered for the loaded gear pair 3 between the input shaft 1 and the intermediate shaft 2 of the transmission, and the moment of inertia, pitch circle diameter, tooth Parameters such as surface contact stiffness, damping, and drag torque. The contact of the non-loaded gear pair 4 adopts gap nonlinear stiffness and gap nonlinear damping, that is, in the non-contact area of ​​the tooth surface, the stiffness and damping...

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Abstract

The invention discloses a method for evaluating the gear knocking level of a transmission by using a knocking exponential surface, which comprises the following steps: S1, establishing a gear knocking mechanical model of a transmission in a certain gear position; S2, setting the actual operating speed range of the engine, etc. The interval is divided into multiple average speed points, and corresponding speed excitations are applied at different speed average points; S3, calculate the overall knock index curve of the transmission; S4, fit the overall knock index curve under multiple speed average points, and get The knock index surface of the overall knock index of the transmission in this gear is about the mean value of the speed and the fluctuation value of the speed; S5, repeat S1 to S4, and obtain the knock index surface under other gears; S6, combine the obtained knock index surface with The target surfaces are compared to quantitatively evaluate the level of transmission gear rattle. It solves the problem that the knocking level of the transmission body cannot be evaluated in advance in the transmission design stage.

Description

technical field [0001] The invention relates to a vehicle transmission, in particular to a method for evaluating the transmission gear knocking level by using a knocking index curved surface. Background technique [0002] With the continuous development of the automobile industry and consumption upgrades, consumers have higher and higher requirements for vehicle power and economy. The engine tends to develop in the direction of turbocharging and high torque, and the transmission tends to develop in the direction of more gears and dual clutches. The increase in the number of transmission gears and the dual-clutch pre-engagement strategy lead to greater sensitivity to transmission gear knocking, and at the same time, greater engine output torsional vibration excitation, which worsens the gear knocking noise in the car and affects the sound quality of the vehicle. [0003] At present, the evaluation of transmission rattling is mainly based on bench or vehicle test data to calc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/15G06F30/17G06F119/14
CPCG06F30/15G06F30/17G06F2119/14Y02T90/00
Inventor 张志军唐禹杨宪武田雄李瑶
Owner CHONGQING CHANGAN AUTOMOBILE CO LTD