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Method and device for controlling AMT gear selecting and shifting executing mechanism

A technology of executive mechanism and control method, which is applied in the field of auto parts, can solve problems such as inability to take remedial measures, and achieve the effect of reducing the risk of traffic accidents

Active Publication Date: 2014-09-03
WEICHAI POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the present invention provides a control method and device for an AMT gear selection actuator to solve the above-mentioned technical problem that remedial measures cannot be taken after the position sensor is found to be faulty

Method used

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  • Method and device for controlling AMT gear selecting and shifting executing mechanism
  • Method and device for controlling AMT gear selecting and shifting executing mechanism
  • Method and device for controlling AMT gear selecting and shifting executing mechanism

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] see figure 1 , the control method of the AMT gear selection actuator provided in Embodiment 1 of the present invention includes the following steps:

[0074] S11. Determine that the gear shift has failed:

[0075] It should be noted that, in the process of selecting and shifting gears, the gear shifting finger is driven by the driving mechanism, and if it works normally, it will reach a predetermined position within a certain period of time. The predetermined position includes a position in a gear selection direction and / or a position in a gear engaging direction.

[0076] However, if the shift finger is stuck during the movement or the position sensor breaks down, and the shift finger has not reached the predetermined position after driving for a long time, it is considered that the shift has failed.

[0077] In order to prevent the gear shift finger from being stuck during the movement or the correct gear shift cannot be achieved due to the failure of the position s...

Embodiment 2

[0126] The control method of the AMT gear selection actuator provided by the second embodiment has many similarities with the control method provided by the first embodiment. For the sake of brevity, the second embodiment only focuses on the differences. For the similarities, please refer to See the description of Example 1.

[0127] see image 3 , to describe the control method provided in Embodiment 2 in detail.

[0128] Steps S31 to S35 are the same as Steps S11 to S15 in Embodiment 1, and Steps S32' to S34' are the same as Steps S12' to S14' in Embodiment 1. For the sake of brevity, please refer to Embodiment 1. describe.

[0129] The control method provided by the present embodiment is after the gear is completed, that is, after step S35 and / or step S33', it also includes:

[0130] Step S36, judging whether the angular acceleration of the input shaft of the AMT gearbox is within the preset range:

[0131] In this embodiment, the power source outputs a small torque to ...

Embodiment 3

[0142] combine Figure 4 The control device of the AMT gear selection actuator in the third embodiment will be described. The AMT gear selection actuator adopted in the present invention is an AMT gear selection actuator commonly used in the art, which includes a gear selection mechanism, a gear shift mechanism and a gear shift finger, and the AMT gear selection actuator also includes a A gear selection position sensor for the position of the shift finger in the gear selection direction and a gear shift position sensor for detecting the position of the shift finger in the gear selection direction. It should be noted that the control device is used in the process of selecting and shifting gears.

[0143] like Figure 4 As shown, the control unit includes the following units:

[0144] A determination unit 41, configured to determine a gear shift failure;

[0145] The first judging unit 42 is used to judge whether the gear selection position sensor fails;

[0146] The first ...

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Abstract

The invention provides a method and device for controlling an AMT gear selecting and shifting executing mechanism. The method and device are applied in the gear selecting and shifting process, and the control method includes the steps of determining that gear shifting is failed, judging whether a gear selecting position sensor breaks down or not, controlling a gear shifting finger to move to the position, corresponding to a target gear, of the gear shifting finger in the gear selecting direction in a first driving time mode to complete the gear selecting process if the gear selecting position sensor breaks down, judging whether a gear engaging position sensor breaks down or not, and controlling the gear shifting finger to move to the position, corresponding to the target gear, of the gear shifting finger in the gear engaging direction in a second driving time mode to complete the gear engaging process if the gear engaging position sensor breaks down. In this way, by means of the control method, whether the position sensor breaks down or not can be timely found, remedial actions can be taken after it is found that the position sensors break down, the gear of a vehicle can be engaged in time, the problem that the gear of the vehicle cannot be engaged for a long time, so that power is off is solved, and the risk of road accidents is reduced.

Description

technical field [0001] The invention relates to the field of auto parts, in particular to a control method and device for an AMT gear selection and shift actuator. Background technique [0002] With the improvement of people's requirements for the comfort of driving vehicles, commercial vehicles are gradually using automatic transmissions instead of manual transmissions to reduce the labor intensity of drivers. Most commercial vehicles are equipped with AMT transmission (mechanical automatic transmission). [0003] AMT transmission is developed on the basis of MT (manual transmission). In AMT transmission, an automatic gear selection actuator is used instead of manual operation to change gears. The automatic gear selection and shifting actuator includes a position sensor, which is the source of the current gear recognition and the basis for judging whether the execution of each sub-action of the gear shift is in place. But the position sensor is easily damaged under the ac...

Claims

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Application Information

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IPC IPC(8): F16H59/02F16H61/02
CPCF16H61/0213F16H61/12F16H2061/1216F16H2061/1232F16H2061/1284F16H2302/06F16H2306/40
Inventor 韩尔樑王庆来周之光
Owner WEICHAI POWER CO LTD
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