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Clutch control method and system for wet-type dual-clutch transmission under idling working condition

A wet dual-clutch, clutch control technology, applied in clutch, transmission control, components with teeth, etc., can solve the problems of engine torque consumption, higher fuel consumption of the whole vehicle, fuel consumption, etc., to reduce engine load, reduce The effect of vehicle fuel consumption and fuel saving

Active Publication Date: 2020-08-11
CHONGQING CHANGAN AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The wet dual-clutch transmission will keep the clutch in a semi-engaged state at idle speed for the starting response and crawling response. Due to the hardware characteristics, the gap between the friction plate and the steel plate of the clutch is very small, and there will be lubricating oil between the friction plate and the steel plate due to lubrication. Existence, when the whole vehicle is at idle speed, it will consume engine torque due to drag caused by lubricating oil. This torque is not effective work and is lost in the form of heat; thus it will bring unnecessary fuel consumption and make the whole vehicle Higher fuel consumption

Method used

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  • Clutch control method and system for wet-type dual-clutch transmission under idling working condition
  • Clutch control method and system for wet-type dual-clutch transmission under idling working condition
  • Clutch control method and system for wet-type dual-clutch transmission under idling working condition

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Embodiment Construction

[0013] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0014] Such as figure 1 The clutch control method of the wet dual-clutch transmission shown in the idling condition is executed by the transmission controller (ie TCU). The TCU can obtain the clutch status signal, the target gear signal, the transmission oil temperature signal, the brake pedal status signal, Brake master cylinder pressure signal, vehicle speed signal, accelerator opening signal, engine speed signal, slope signal, transmission fault light signal and brake master cylinder pressure fault signal, and judge and process them.

[0015] Such as figure 1 As shown, the clutch control method includes:

[0016] In the first step, the TCU judges whether the clutch is at the half-engagement point, if so, executes the second step, otherwise executes the fifth step;

[0017] In the second step, the TCU judges whether the clutch complete disengagement condition is...

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Abstract

The invention discloses a clutch control method and system of a wet-type dual-clutch transmission under an idling working condition. The clutch control method is executed by a gearbox controller and comprises the steps that under the condition that a clutch is located at a semi-joint point, if a clutch complete separation condition is met, the clutch is controlled to be completely separated, and if the clutch complete separation condition is not met, maintaining the clutch in a semi-joint state is carried out; and under the condition that the clutch is completely separated, if the clutch complete separation quitting condition is met, the clutch is controlled to be at the semi-joint point, and if the clutch complete separation quitting condition is not met, the clutch is kept in a completeseparation state. By adopting the clutch control method and system of the wet-type dual-clutch transmission under the idling working condition, the starting and climbing response can be ensured, and meanwhile, the fuel consumption increased due to the dragging load of the clutch during idling can be reduced.

Description

technical field [0001] The invention belongs to the field of transmission control, and in particular relates to a clutch control method and system of a wet dual-clutch transmission under idle speed conditions. Background technique [0002] Vehicle idling is an indispensable and widely used working condition in the driving cycle. The wet dual-clutch transmission will keep the clutch in a semi-engaged state at idle speed for the starting response and crawling response. Due to the hardware characteristics, the gap between the friction plate and the steel plate of the clutch is very small, and there will be lubricating oil between the friction plate and the steel plate due to lubrication. Existence, when the whole vehicle is at idle speed, it will consume engine torque due to drag caused by lubricating oil. This torque is not effective work and is lost in the form of heat; thus it will bring unnecessary fuel consumption and make the whole vehicle Fuel consumption becomes higher...

Claims

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Application Information

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IPC IPC(8): F16D48/10F16H61/02F16H61/04
CPCF16D48/10F16H61/02F16H61/04
Inventor 向光军黄辉韩涌波
Owner CHONGQING CHANGAN AUTOMOBILE CO LTD
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