AMT transmission gear-shifting meshing point position self-learning method

A self-learning method and meshing point technology, applied in transmission control, components with teeth, belts/chains/gears, etc., can solve problems such as reduced efficiency, increased cost, weak starting and climbing power, etc., to achieve guaranteed Smoothness, the effect of eliminating the deviation of the meshing point

Active Publication Date: 2017-06-20
南京奥联新能源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the current electric commercial vehicles, the use of direct drive systems has the problems of weak starting and climbing power, while the use of high-torque motors faces the problems of increased costs and reduced efficiency

Method used

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  • AMT transmission gear-shifting meshing point position self-learning method
  • AMT transmission gear-shifting meshing point position self-learning method
  • AMT transmission gear-shifting meshing point position self-learning method

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Embodiment 1

[0029] This embodiment provides a self-learning method for the position of the shifting mesh point of an AMT transmission, which is applied to a system composed of a motor + a mechanical automatic transmission. There is a synchronizer in this system, but there is no clutch separation mechanism, and the MCU motor controller The torque and speed control of the motor is realized. The VCU vehicle controller collects information such as the accelerator and brake of the vehicle, calculates the required torque of the vehicle, and realizes the coordinated control of the vehicle. The TCU transmission controller calculates the required gear based on the information of the accelerator and vehicle speed. And complete the gear shifting operation through the gear shift actuator (electric actuator or hydraulic actuator). In this embodiment, the structure of the system is as follows figure 1 shown.

[0030] The methods include:

[0031] S10. The TCU transmission controller judges the current...

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Abstract

The invention discloses an AMT transmission gear-shifting meshing point position self-learning method. An AMT transmission comprises a synchronizer and does not comprise a clutch. The method includes the steps that after meshing is completed, whether the AMT transmission enters a meshing point for self cleaning is carried out or not is judged according to a set self-learning triggering condition, meshing point self cleaning is started according to the self-learning recognition condition, whether the current shifting fork position is a qualified meshing point or not is judged, and meshing point position modification is carried out according to a certain step length if the current shifting fork position is not the qualified meshing point. According to the mechanical automatic transmission gear-shifting meshing point self-learning method applied to an electric car, the automatic transmission is provided with the synchronizer structure, in the gear-shifting process, meshing point deviations caused by mechanical manufacturing are eliminated through meshing point position self learning, and smoothness of the gear shifting process is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of AMT transmissions, and in particular relates to a method for self-learning the positions of shifting meshing points of AMT transmissions. Background technique [0002] Mechanical automatic transmission, referred to as AMT (Automatic Manual Transmission), is improved from the traditional manual gear transmission. By adding sensors and actuators to the traditional manual gear transmission, the automatic shifting function is realized. In the current electric commercial vehicles, the use of direct drive systems has the problems of weak starting and climbing power, while the use of high-torque motors faces the problems of increased costs and reduced efficiency. This problem can be solved well by matching the AMT transmission, and improving the shift smoothness of the AMT transmission is a technical problem that needs to be solved. Contents of the invention [0003] The purpose of the present invention is to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H61/04
CPCF16H61/04
Inventor 张广辉
Owner 南京奥联新能源有限公司
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