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Synchronizer oil charge self-adaptive control method and device

A technology of self-adaptive control and synchronizer, applied in transmission control, clutch, components with teeth, etc., can solve problems such as poor oil filling effect, and achieve the effect of improving oil filling effect

Pending Publication Date: 2022-05-03
GUANGZHOU AUTOMOBILE GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem of poor oil filling effect in the prior art, the present disclosure provides a synchronizer oil filling self-adaptive control method and device to improve the oil filling effect

Method used

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  • Synchronizer oil charge self-adaptive control method and device
  • Synchronizer oil charge self-adaptive control method and device
  • Synchronizer oil charge self-adaptive control method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] see figure 1 , a synchronizer oil filling adaptive control method, comprising:

[0063] Step S1: In response to the received gear-engaging action command, determine the current gear position according to the pre-calibrated fixed oil-charging pressure of different gear positions, different oil temperatures, and different main pressures and the maintenance time of the fixed oil-charging pressure of gear-engaging , the current oil temperature and the current main pressure of the fixed oil charge pressure in gear and the maintenance time of the fixed oil charge pressure in gear;

[0064] Step S2: Based on the determined fixed oil filling pressure for in-gear and the maintenance time of the fixed oil-fill pressure for in-gear, control the oil filling of the synchronizer, and then control the oil pressure for in-gear of the synchronizer based on the variable pressure of the in-gear until the shift fork moves, and record The gear change pressure maintenance time, wherein, the...

Embodiment 2

[0105] see image 3 , a synchronizer oil filling adaptive control device, comprising:

[0106] The first determining module 1 is configured to respond to the received gear-engagement action instruction, according to the pre-calibrated gear-shifting fixed oil-charging pressure and gear-shifting fixed oil-charging pressure maintenance time under different gear positions, different oil temperatures and different main pressures , to determine the current gear position, current oil temperature and current main pressure, the fixed oil charge pressure in gear and the maintenance time of the fixed oil charge pressure in gear;

[0107] The first control module 2 is used to control the oil filling of the synchronizer based on the determined fixed oil charging pressure and the maintenance time of the fixed oil charging pressure of the gear, and then control the oil pressure of the synchronizer based on the variable pressure of the gear until the shift fork A movement occurs, and the tim...

Embodiment 3

[0145] First, the parameters in this embodiment are described:

[0146] P 1 : The first stage oil filling pressure, divided into the first stage gear oil filling pressure P 1_apply , Oil filling pressure P in the first stage 1_release ;

[0147] P 1_apply : The oil filling pressure in the first stage, the initial value of the pressure is the calibration value, which distinguishes different gears, oil temperature and main pressure;

[0148] P 1_release : In the first stage, the gear is removed and the oil filling pressure is selected. The initial value of the pressure is the calibration value, which distinguishes different gears, oil temperature and main pressure;

[0149] P' 1 : The first-stage oil-filling pressure corrected based on the shifting time of the shift fork;

[0150] k1: correction coefficient of oil filling pressure in the first stage;

[0151] T 1 : The maintenance time of the oil filling pressure in the first stage, which is divided into the maintenance...

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Abstract

The invention provides a synchronizer oil charge self-adaptive control method and device. The method comprises the steps that the current gear, the current oil temperature, the gear engaging fixed oil charge pressure under the current main pressure and the gear engaging fixed oil charge pressure maintaining time are determined; controlling the synchronizer to charge oil based on the determined gear-engaging fixed oil charge pressure and the gear-engaging fixed oil charge pressure maintaining time, and controlling the gear-engaging oil pressure of the synchronizer based on the gear-engaging variable pressure until the shifting fork moves; and on the basis of the gear shifting pressure maintaining time and preset first reference time, gear shifting fixed oil charging pressure and / or gear shifting fixed oil charging pressure maintaining time which are / is calibrated in advance are / is corrected. The gear-engaging fixed oil charging pressure and / or the gear-engaging fixed oil charging maintaining time are / is automatically corrected, so that oil charging is carried out through the corrected gear-engaging fixed oil charging pressure and / or the gear-engaging fixed oil charging maintaining time, self-adaption to the oil temperature, the main pressure, the sizes of piston cavities and oil ways of different gears and the change of the whole transmission along with durability is achieved, and the oil charging effect is improved.

Description

technical field [0001] The present disclosure relates to the field of automatic transmission control, in particular to a synchronizer oil filling self-adaptive control method and device. Background technique [0002] Synchronizers in the prior art control the oil-filling stage and are controlled with the same fixed pressure. In the process of realizing the present invention, the inventor found that there are at least the following problems in the prior art: failure to fully consider the volume of the piston cavity and the oil passage in different gears , the influence of main pressure and oil temperature, and cannot cover the process level, resulting in differences in piston chambers, oil circuits and self-locking forces of different transmissions, as well as differences in the positioning pin of the same transmission with piston wear and durability mileage, resulting in poor oil filling effect, such as easy Insufficient oil filling or overfilling of oil, too fast initial sp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D48/02F16H61/02
CPCF16D48/02F16H61/0262F16H2061/0087
Inventor 张苏文熊杰李晓波邓云飞刘学武
Owner GUANGZHOU AUTOMOBILE GROUP CO LTD
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