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Micro-slip control system for wet double clutch automatic transmission

A wet dual clutch, automatic transmission technology, applied in transmission control, transmission parts, gear lubrication/cooling, etc., can solve the problem of excessive target slip and actual slip, clutch stuck, clutch ablation and other problems, to achieve the effect of easy implementation, convenient data collection, and easy application

Active Publication Date: 2019-01-15
ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a micro-slip control method for a wet dual-clutch automatic transmission to solve the problems in the prior art that the gap between the target slip and the actual slip is too large, resulting in clutch sticking or clutch ablation.

Method used

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  • Micro-slip control system for wet double clutch automatic transmission
  • Micro-slip control system for wet double clutch automatic transmission
  • Micro-slip control system for wet double clutch automatic transmission

Examples

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Embodiment Construction

[0047] The technical solution of the present invention is described in detail below through the examples, and the following examples are only exemplary and can only be used to explain and illustrate the technical solution of the present invention, rather than being interpreted as a limitation to the technical solution of the present invention.

[0048] A micro-slip control method for a wet dual-clutch automatic transmission, such as figure 1 As shown, including initialization control, torque down control, torque up control and micro-slip grinding control.

[0049] Before the gearbox is controlled, it is first judged whether the gearbox meets the micro-slip control conditions. The micro-slip control conditions include that the gearbox is not creeping, it is not starting, it is not shifting, the clutch is not Open and not in failure mode.

[0050] After judging, if it matches, then proceed to the initialization control stage.

[0051] Under the initial control condition, it is...

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Abstract

The invention relates to a micro-slip control system for a wet double clutch automatic transmission. The micro-slip control system performs micro-slip control on a transmission to make the actual slipfrequency of the transmission reach a target slip frequency and isolate a power train from the vibration of an engine through the micro-slip clutches. As for the control, the ability to isolate the vibration must be considered, as well as the clutch wear and fuel consumption. The goal of the control is to avoid the slip frequency being too low that causes the clutches to be stuck and the failureto achieve the purpose of isolation vibration; and to avoid the slip frequency being too high that causes the temperature of the clutches to rise too fast. The algorithm of the application is easy toimplement, easy to apply, strong in operability, and convenient in data collection.

Description

technical field [0001] The invention belongs to the technical field of gearboxes, in particular to a micro-slip control method for a wet dual-clutch automatic gearbox. Background technique [0002] When the oil temperature of the gearbox is within the normal working range, if the slip of the gearbox is too large during the gearbox control, the clutch temperature will rise too fast, resulting in clutch ablation, high fuel consumption and clutch wear. If the difference is too low, the clutch will be stuck and the purpose of vibration isolation cannot be achieved, and other wet dual clutches in China currently do not have a slip control system. Contents of the invention [0003] The purpose of the present invention is to provide a micro-slip control method for a wet dual-clutch automatic transmission to solve the problems in the prior art that the gap between the target slip and the actual slip is too large, resulting in clutch sticking or clutch ablation. [0004] The prese...

Claims

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Application Information

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IPC IPC(8): F16H57/04F16H57/028F16H59/14
CPCF16H57/028F16H57/04F16H59/14
Inventor 徐瑞雪尹良杰
Owner ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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