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Control method for improving gear shifting smoothness based on AMT (automated mechanical transmission)

A technology of automatic transmission and control method, applied in the direction of transmission control, elements with teeth, belt/chain/gear, etc. The corresponding speed is fast, the effect of eliminating the periodic oscillation of the rotational speed and reducing the power interruption time

Active Publication Date: 2012-07-11
CHANGSHA CRRC INTELLIGENT CONTROL & NEW ENERGY TECH CO LTD
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Problems solved by technology

[0009] The purpose of the present invention is to propose a control method based on the AMT automatic transmission to improve the smoothness of shifting in view of the existing AMT gearboxes of public transport vehicles that have relatively large shifting impact and poor shifting speed and smoothness , realize the accurate determination of the driving slope, change the shift strategy in time, and improve the power performance and reliability of climbing

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  • Control method for improving gear shifting smoothness based on AMT (automated mechanical transmission)
  • Control method for improving gear shifting smoothness based on AMT (automated mechanical transmission)
  • Control method for improving gear shifting smoothness based on AMT (automated mechanical transmission)

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Embodiment 1

[0031] It can be seen from the accompanying drawings that the present invention relates to a control method based on an AMT automatic transmission to improve the smoothness of shifting, based on the combination of torque and speed control, and decomposing the shifting process into multiple real-time control stages, and in the At each stage, based on the actual torque and speed feedback of the engine and motor, the fast response characteristics of the motor are used to achieve fast gear shifting and effective torque compensation; The output torque does not produce long-term and large fluctuations compared with the total demand torque; the impact of the whole vehicle is reduced as much as possible, and the purpose of improving the smoothness and comfort of shifting is achieved.

[0032] According to the analysis of the running test, it is found that the fundamental principle of improving the smoothness of shifting is to shorten the shifting time and reduce the shock of shifting. ...

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Abstract

A control method for improving gear shifting smoothness based on an AMT (automated mechanical transmission) is characterized in that torque control and rotating speed control are combined, a gear shifting process is decomposed into a plurality of real-time control stages, rapid gear shifting and effective torque compensation are realized by the aid of rapid response of a motor on the basis of the actual torque and rotating speed feedback of an engine and the motor at the stages, the actual output torque of a transmission system has no long-time large fluctuation as compared with overall needed torque by means of dynamic coordinated control during actual running of a vehicle, and the impact of the whole vehicle is decreased as far as possible, so that gear shifting smoothness and comfortableness are improved.

Description

technical field [0001] The present invention relates to a kind of shifting mode of automobiles, in particular to a control method for improving the smoothness of shifting based on parallel hybrid power of bus AMT automatic transmission; Transmission parallel hybrid system. Background technique [0002] The AMT automatic transmission is an automatic transmission system controlled by a microcomputer on the basis of a dry clutch and a gear transmission. It can determine the best gear position according to parameters such as vehicle speed, accelerator, and driver's operation instructions, and control the clutch separation, combination, shifting, shifting, and shifting of the joystick, as well as the throttle opening of the engine, which should have been done manually in traditional vehicles. The operation process such as the synchronous adjustment of the speed, and finally realizes the operation automation of the shifting process. AMT maintains the basic mechanism of the orig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H61/04
Inventor 刘文洲李明哲席力克裴海灵谢勇波王文明盛旺李晟
Owner CHANGSHA CRRC INTELLIGENT CONTROL & NEW ENERGY TECH CO LTD
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