Control method for gear selecting and shifting of automatic gearbox and vehicle applying control method

A gear shifting control and automatic shifting technology, which is applied in transmission control, components with teeth, belts/chains/gears, etc., can solve the problems of cost increase and achieve the effect of improving work stability

Inactive Publication Date: 2013-09-04
WEICHAI POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The first method is to precisely control the pressure relief speed at both ends of the cylinder, which requires hardware such as solenoid valves to have extremely high control precision, and will greatly improve the design and processing accuracy of the cylinder, and the cost will increase

Method used

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  • Control method for gear selecting and shifting of automatic gearbox and vehicle applying control method
  • Control method for gear selecting and shifting of automatic gearbox and vehicle applying control method
  • Control method for gear selecting and shifting of automatic gearbox and vehicle applying control method

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Embodiment Construction

[0026] The core of the present invention is to provide a control method for gear selection and shifting of an automatic transmission, so as to reduce the overall control cost while taking into account the working stability, and at the same time effectively improve the service life of functional components. The present embodiment will be described in detail below in conjunction with the accompanying drawings.

[0027] See image 3 , which is a flow chart of the automatic transmission gear selection and shift control method according to this embodiment.

[0028] The method proceeds sequentially as follows:

[0029] S1. After the gear removal is completed, the speed adjustment of the transmission input shaft is performed; after the gear position change command is obtained, the gear removal is performed, and then the speed adjustment of the transmission input shaft is performed. Wherein, it is preferable to use a speed regulating motor arranged between the clutch and the gearbox...

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Abstract

The invention discloses a control method for gear selecting and shifting of an automatic gearbox. The control method includes the following steps: adjusting speeds of an input shaft of the gearbox after gear removal, starting adjustment of working positions of a gear selecting cylinder on the condition that a rotating speed difference of the input shaft and an output shaft of the gearbox satisfies a range of threshold, and engaging a gear. Preferably, when the gear selecting cylinder is adjusted to be positioned in the middle, power sources at two ends of the gear selecting cylinder are kept connected; and gear shifting refers to that a gear shifting position is shifted to coincide with a side shifting-fork guide block along the direction of gear selecting, and the power sources at two ends of the gear selecting cylinder are disconnected. Preferably, before step 3, the rotating speed difference of the input shaft and the output shaft of the gearbox is controlled in real time to satisfy the range of the threshold. Compared with the prior art, the control method has the advantages that improved design of a control strategy is made, so that overall control cost can be greatly reduced, and service lives of function components can be prolonged effectively. On the basis, the invention further provides a vehicle applying the control method for gear selecting and shifting.

Description

technical field [0001] The invention relates to the technical field of vehicle power control, in particular to a method for controlling gear selection and shifting of an automatic transmission and a vehicle using the method. Background technique [0002] AMT (Automated Mechanical Transmission) is improved on the basis of the traditional manual gear transmission. It retains most of the original assembly components, and only the shift lever part of the manual operating system , Changed to an electrical control actuator, good production succession, less investment in transformation. According to the power source, the actuators of AMT have three structures: electro-hydraulic, electro-pneumatic and electro-electric. Hydraulic cylinders, cylinders and electric motors are used as power sources respectively. Gear changes need to go through two actions: gear selection and gear shifting. The gear selection action is used to select the gear to be pushed through the shift finger 5, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H61/28F16H59/38F16H59/46
Inventor 韩尔樑王庆来陈国涛周之光桂经良
Owner WEICHAI POWER CO LTD
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