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1. CN111810627 - Double-clutch coasting downshift control method

Office
China
Application Number 202010651760.4
Application Date 08.07.2020
Publication Number 111810627
Publication Date 23.10.2020
Grant Number 111810627
Grant Date 27.08.2021
Publication Kind B
IPC
F16H 61/04
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
HGEARING
61Control functions within change-speed- or reversing-gearings for conveying rotary motion
04Smoothing ratio shift
F16H 59/24
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
HGEARING
59Control inputs to change-speed- or reversing-gearings for conveying rotary motion
14Inputs being a function of torque or torque demand
24dependent on the throttle opening
F16H 59/56
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
HGEARING
59Control inputs to change-speed- or reversing-gearings for conveying rotary motion
50Inputs being a function of the status of the machine, e.g. position of doors or safety belts
56dependent on signals from the main clutch
CPC
F16H 61/04
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
HGEARING
61Control functions within ; control units of; change-speed- or reversing-gearings for conveying rotary motion ; ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
04Smoothing ratio shift
F16H 59/24
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
HGEARING
59Control inputs to ; control units of; change-speed-, or reversing-gearings for conveying rotary motion
14Inputs being a function of torque or torque demand
24dependent on the throttle opening
F16H 59/56
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
HGEARING
59Control inputs to ; control units of; change-speed-, or reversing-gearings for conveying rotary motion
50Inputs being a function of the status of the machine, e.g. position of doors or safety belts
56dependent on signals from the main clutch
F16H 2061/0474
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
HGEARING
61Control functions within ; control units of; change-speed- or reversing-gearings for conveying rotary motion ; ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
04Smoothing ratio shift
0474by smoothing engagement or release of positive clutches; Methods or means for shock free engagement of dog clutches
Y02T 10/60
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
10Road transport of goods or passengers
60Other road transportation technologies with climate change mitigation effect
Applicants CHINA FAW GROUP CORPORATION
中国第一汽车股份有限公司
Inventors ZHU GUIQING
朱桂庆
CAO LONG
曹龙
WANG XINYU
王歆誉
ZHANG XUEFENG
张学锋
SUN FEI
孙飞
Agents 北京远智汇知识产权代理有限公司 11659
Title
(EN) Double-clutch coasting downshift control method
(ZH) 一种双离合器滑行降挡控制方法
Abstract
(EN) The invention provides a double-clutch coasting downshift control method. The method comprises the steps that whether clutches are in an oil charging stage or not is judged in the coasting downshift process of a vehicle; if the clutches are not in the oil charging stage, whether accelerator opening degree is larger than accelerator limit value or not is detected; if the accelerator opening degreeis larger than the accelerator limit value, whether the power mode of the vehicle is in a power state or not is continuously judged; if the power mode of the vehicle is in the power state, the operation of switching coasting downshift to power downshift and simultaneously controlling rotating speed and torque is executed; and when the sliding downshift is converted into the power downshift and therotating speed and the torque are simultaneously controlled, first torque of the high-gear clutch is equal to max { first minimum torque of the high-gear clutch, first total torque of the clutch * first coefficient}, and first torque of the low-gear clutch is equal to first total torque of the clutch * (1-the first coefficient). According to the embodiment, the torque of the high-gear clutch is controlled not to be smaller than the minimum torque of the high-gear clutch in the coasting downshift stage, so that the smoothness of the vehicle in the shifting process is ensured.
(ZH) 本发明提供了一种双离合器滑行降挡控制方法,该方法包括:在车辆滑行降挡过程中判断离合器是否处于充油阶段;若离合器不处于充油阶段,则检测油门开度是否大于油门限值;若油门开度大于油门限度值,则继续判断车辆的动力模式是否是动力状态;若车辆动力模式为动力状态,则执行滑行降挡转换到动力降挡且转速扭矩同时控制的操作;滑行降挡转换到动力降挡且转速扭矩同时控制时,高挡位离合器第一扭矩=max{高挡位离合器第一最小扭矩,离合器第一总扭矩*第一系数};低挡位离合器第一扭矩=离合器第一总扭矩*(1‑第一系数),本发明实施例在滑行降挡阶段控制高挡位离合器的扭矩不小于高挡位离合器的最小扭矩,从而保障车辆在换挡过程中保持平顺性。
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