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CN105805186A - Oil charging accurate control method for wet clutch - Google Patents

Oil charging accurate control method for wet clutch Download PDF

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Publication number
CN105805186A
CN105805186A CN201610265052.0A CN201610265052A CN105805186A CN 105805186 A CN105805186 A CN 105805186A CN 201610265052 A CN201610265052 A CN 201610265052A CN 105805186 A CN105805186 A CN 105805186A
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China
Prior art keywords
pressure
oil
clutch
filled
stage
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Granted
Application number
CN201610265052.0A
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Chinese (zh)
Other versions
CN105805186B (en
Inventor
曹龙
熊杰
赵彬
张广辉
张荣辉
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FAW Group Corp
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FAW Group Corp
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Priority to CN201610265052.0A priority Critical patent/CN105805186B/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D48/00—External control of clutches
    • F16D48/02—Control by fluid pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control 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
    • F16H61/04—Smoothing ratio shift
    • F16H61/06—Smoothing ratio shift by controlling rate of change of fluid pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control 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
    • F16H61/04—Smoothing ratio shift
    • F16H61/06—Smoothing ratio shift by controlling rate of change of fluid pressure
    • F16H61/061—Smoothing ratio shift by controlling rate of change of fluid pressure using electric control means
    • F16H2061/062—Smoothing ratio shift by controlling rate of change of fluid pressure using electric control means for controlling filling of clutches or brake servos, e.g. fill time, fill level or pressure during filling

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Transmission Device (AREA)

Abstract

The invention relates to an oil charging accurate control method for a clutch in the gear shifting process of a wet double-clutch automatic transmission. The oil charging process of the clutch is divided into four stages. In the first stage, oil is rapidly charged into the clutch, the oil charging pressure satisfies the equation that P1=P0+delta P1, P0 is the target pressure, and the most appropriate delta P1 value under each oil temperature and gear shifting type is found out through an experiment mode by considering the influences of the oil temperature of a gear box and the gear shifting type. In the second stage, oil charging compensation is carried out on the clutch subjected to rapid oil charging, the oil charging pressure satisfies the equation that P2=P0+delta P2, and the most appropriate delta P2 value under each gear shifting type and system pressure is found out through an experiment mode by considering the influences of the gear shifting type and system pressure. In the third stage, oil charging waiting is carried out on the clutch, the oil charging pressure satisfies the equation that P3=P0, and the third stage is ended when the pressure of the clutch reaches 95% of the target pressure. In the fourth stage, oil charging is finished. By controlling the pressure of each stage, rapid and accurate response of the pressure of the oil charging process of the clutch can be realized, and impact caused by pressure overshoot of the clutch is avoided.

Description

The oil-filled accuracy control method of wet clutch
Technical field
The present invention relates to variator automatic control technology field, relates to the oil-filled accuracy control method of clutch of a kind of wet type double-clutch automatic gearbox.
Background technology
Joint and the separation of clutch are realized gearbox shifting by controlling the oil-filled and draining realization of clutch by wet type double-clutch automatic gearbox then, and oil-filled and draining process the quality of clutch directly affects shift quality.The oil-filled too high meeting of clutch causes shift shock, affects clutch service life, and oil-filled too low meeting causes response slack-off and engine speed raises up during gearshift.
At publication number CN103089986A, denomination of invention: in the Chinese invention patent application of " automatic transmission clutch control method ", by making described clutch arrive described linkage dotted state to twice of clutch is oil-filled, and control clutch pressure by increasing clutch pressure or oil-filled time in second time Oil feeding process.But, this patent does not consider the factor impacts on clutch pressure control such as TOT Transmission Oil Temperature, system pressure, shifting type.
At publication number CN103438124A, denomination of invention: in the Chinese invention patent of " the oil-filled control method of dual-clutch transmission clutch ", by making clutch pressure reach linkage point pressure to twice of clutch is oil-filled, and carry out pre-oiling according to current TOT Transmission Oil Temperature, to improve promptness and the ride comfort of clutch operating in shift process.But, this patent application does not consider electromagnetic valve current sluggishness and the running of hydraulic power oil impact on valve core of the electromagnetic valve resistance；Whole control process is also without considering the impact on the oil-filled time of the precharge pressure size.
Summary of the invention
In order to solve the problems referred to above, it is an object of the invention to overcome disadvantages mentioned above, consider the factor impacts on clutch pressure such as TOT Transmission Oil Temperature, shifting type, system pressure, electric current sluggish, oil-filled time, clutch oil pressure in Oil feeding process is accurately controlled, realize the quick and accurate of clutch Oil feeding process, it is to avoid shift shock.
A kind of oil-filled accuracy control method of automatic wet-type clutch of the present invention, clutch Oil feeding process is divided into four-stage by the method: quickly compensation oil-filled, oil-filled, oil-filled wait, oil-filled complete, and each stage control is as follows:
Stage one: clutch is carried out quickly oil-filled, precharge pressure P1=P0+ΔP1, P0For goal pressure, Δ P1Consider the impact of gear box oil gentleness shifting type, obtain Δ P the most suitable by testing1Value, selection principle is fastest for not having pressure overshoot and pressure to set up；
Stage two: the clutch after quickly oil-filled is carried out oil-filled compensation, precharge pressure P2=P0+ΔP2, Δ P2Consider the impact of shifting type and system pressure, obtain Δ P the most suitable by testing2Value, selection principle is the shortest time not having pressure overshoot and pressure to arrive 90% goal pressure；
Stage three: clutch is carried out oil-filled wait, precharge pressure P2=P0, keep the scheduled time；
Stage four: oil-filled complete.
Described clutch goal pressure P0, i.e. Half engagement point pressure, clutch is about to transmission moment of torsion at this pressure, to ensure that clutch can quick and precisely respond when having a torque request.
Described system pressure refers to the working connection pressure of system；Shifting type is divided into four kinds of patterns: dynamic upshift, unpowered upshift, dynamic downshift and unpowered downshift.
The oil-filled time that stage one sets is determined according to current system pressure and shifting type.
When the actual pressure of clutch and the deviation of order pressure are in default scope, the stage two exits.
The clutch precharge pressure that stage two sets keeps the setting time to be decreased to goal pressure again with fixed value, or is decreased to goal pressure with a certain slope.
In the stage three, when clutch pressure reaches 95% goal pressure, the phase III exits.
Beneficial effects of the present invention:
1. at clutch quickly oil-filled and oil-filled compensated stage, with oil-filled to clutch more than the control mode of goal pressure, it is possible to improve the response speed of oil pressure, shorten the oil-filled time；
2. clutch oil-filled each stage has considered the different factor impact on clutch pressure such as TOT Transmission Oil Temperature, system pressure, shifting type, it is ensured that under multiple applying working condition, clutch Oil feeding process is quick and precisely.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the oil-filled accuracy control method of clutch of the present invention.
Detailed description of the invention
Below with reference to accompanying drawing, technical solution of the present invention is further elaborated.
In FIG, whole Oil feeding process is divided into four-stage:
Stage one: clutch is carried out quickly oil-filled, precharge pressure P1=P0+ΔP1, P0For the goal pressure that clutch finally to reach, Δ P1It is quickly oil-filled in order to realize so that the additional command pressure that clutch pressure is quickly set up and increased on goal pressure basis.Different TOT Transmission Oil Temperatures and different shifting type can affect quickly oil-filled effect, and therefore the size of this pressure is tabled look-up acquisition according to gear box oil gentleness shifting type, for instance shown in following table；The oil-filled time is determined according to current system pressure and shifting type, and this stage mainly improves electromagnetic valve response speed,
-30℃△P1Table look-up
0℃△P1Table look-up
Stage two: the effect in stage one is quickly oil-filled, if but the persistent period in stage one long easily caused by oil-filled overshoot phenomenon, the effect in stage two is in order to avoid oil-filled overshoot and oil pressure can be made quickly to set up desired value and to goal pressure P0Basis on make order pressure compensation.Precharge pressure P2=P0+ΔP2, Δ P2Consider the impact of shifting type and system pressure, table look-up acquisition according to shifting type and system pressure, as shown in the table；
System pressure 8bar △ P2Table look-up
System pressure 12bar △ P2Table look-up
Second stage, owing to, in Oil feeding process, having the flowing of hydraulic oil in valve core of the electromagnetic valve, the spool of electromagnetic valve can be produced drag effect by this flowing, it is necessary to the clutch after quickly oil-filled is carried out oil-filled compensation, precharge pressure P2=P0+ΔP2, Δ P2Table look-up acquisition according to TOT Transmission Oil Temperature, clutch precharge pressure can keep the setting time to be decreased to goal pressure again with fixed value, can also being decreased to goal pressure with a certain slope, after the actual pressure of clutch and the deviation of order pressure are in default scope, this stage exits；
Phase III, clutch is carried out oil-filled wait, wait until that oil pressure is stable at Half engagement point.Precharge pressure P3=P0, until exiting the phase III when clutch pressure reaches 95% goal pressure.This stage needs wait for a period of time, and main cause has two: the first wait clutch pressures steady, and second has certain delaying due to the oil pressure foundation at clutch place relative to the oil pressure at electromagnetic valve place, it is therefore desirable to wait for a period of time.
Fourth stage, oil-filled completes, and keeps clutch pressure constant, until quickly responding when having torque request.

Claims (7)

1. the oil-filled accuracy control method of automatic wet-type clutch, it is characterised in that
Clutch Oil feeding process is divided into four-stage by the method: quickly compensation oil-filled, oil-filled, oil-filled wait, oil-filled complete, and each stage control is as follows:
Stage one: clutch is carried out quickly oil-filled, precharge pressure P1=P0+ΔP1, P0For goal pressure, Δ P1Consider the impact of gear box oil gentleness shifting type, obtain Δ P the most suitable by testing1Value, selection principle is fastest for not having pressure overshoot and pressure to set up；
Stage two: the clutch after quickly oil-filled is carried out oil-filled compensation, precharge pressure P2=P0+ΔP2, Δ P2Consider the impact of shifting type and system pressure, obtain Δ P the most suitable by testing2Value, selection principle is the shortest time not having pressure overshoot and pressure to arrive 90% goal pressure；；
Stage three: clutch is carried out oil-filled wait, precharge pressure P3=P0, keep the scheduled time；
Stage four: oil-filled complete.
2. the oil-filled accuracy control method of automatic wet-type clutch described in claim 1, it is characterised in that
Described clutch goal pressure P0, i.e. Half engagement point pressure, clutch is about to transmission moment of torsion at this pressure.
3. the oil-filled accuracy control method of automatic wet-type clutch described in claim 1, it is characterised in that
Described system pressure refers to the working connection pressure of system；Shifting type is divided into four kinds of patterns: dynamic upshift, unpowered upshift, dynamic downshift and unpowered downshift.
4. the oil-filled accuracy control method of automatic wet-type clutch described in claim 1, it is characterised in that
The oil-filled time that stage one sets is determined according to current system pressure and shifting type.
5. the oil-filled accuracy control method of automatic wet-type clutch described in claim 1, it is characterised in that when the actual pressure of clutch and the deviation of order pressure are in default scope, the stage two exits.
6. the oil-filled accuracy control method of automatic wet-type clutch described in claim 1, it is characterised in that the clutch precharge pressure that the stage two sets keeps the setting time to be decreased to goal pressure again with fixed value, or is decreased to goal pressure with a certain slope.
7. the oil-filled accuracy control method of automatic wet-type clutch described in claim 1, it is characterised in that phase III when clutch pressure reaches 95% goal pressure in stage three exits.
CN201610265052.0A 2016-04-26 2016-04-26 The oil-filled accuracy control method of wet clutch Active CN105805186B (en)

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Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106286814A (en) * 2016-10-28 2017-01-04 安徽江淮汽车股份有限公司 A kind of oil-filled control method of wet-type dual-clutch and system
CN106438763A (en) * 2016-12-14 2017-02-22 安徽江淮汽车集团股份有限公司 Self-learning method and system for pressure-current characteristics of wet clutch
CN106499750A (en) * 2016-11-24 2017-03-15 安徽江淮汽车集团股份有限公司 A kind of automobile wet-type double-clutch Half engagement point self-learning method and system
CN106641238A (en) * 2016-12-13 2017-05-10 安徽江淮汽车集团股份有限公司 Wet type dual-clutch transmission oil charging control method and system
CN107504171A (en) * 2017-09-22 2017-12-22 中国第汽车股份有限公司 The half hitch chalaza determination methods and system of a kind of hydraulic automatic speed variator clutch
CN108518478A (en) * 2018-04-08 2018-09-11 吉泰车辆技术（苏州）有限公司 Double-clutch speed changer main oil pressure self-adaptation control method and system
CN109882589A (en) * 2019-03-28 2019-06-14 世倍特科技投资(中国)有限公司 For adjusting the method and vehicle of the pressure of putting into gear of double-clutch speed changer
CN111473068A (en) * 2019-01-24 2020-07-31 联合汽车电子有限公司 Lockup pressure control method for lockup clutch in torque converter
CN111677855A (en) * 2020-08-04 2020-09-18 盛瑞传动股份有限公司 Control method for oil filling height of automatic transmission in quick oil filling stage
CN111981058A (en) * 2019-05-21 2020-11-24 上海汽车集团股份有限公司 Wet clutch pressure control method and system
CN112098075A (en) * 2020-09-14 2020-12-18 广州汽车集团股份有限公司 Oil filling test method and device for synchronizer and rack test system
CN112334687A (en) * 2018-06-20 2021-02-05 标致雪铁龙汽车股份有限公司 Control of torque transmitted during gear shifting in an automatic transmission of a vehicle
CN112413110A (en) * 2019-12-30 2021-02-26 盛瑞传动股份有限公司 Control method for oil filling time of automatic transmission in quick oil filling stage
CN112443657A (en) * 2021-02-01 2021-03-05 北京航空航天大学 Main oil circuit pressure control method for preventing clutch from slipping in quick oil filling stage
CN112555298A (en) * 2020-12-09 2021-03-26 江苏新能源汽车研究院有限公司 Optimized oil charge control method for clutch for hybrid new energy vehicle
CN112628394A (en) * 2021-02-18 2021-04-09 雷沃工程机械集团有限公司 Control strategy for clutch of planetary gearbox of loader
CN113048161A (en) * 2021-03-08 2021-06-29 重庆青山工业有限责任公司 Regulation control method for oil filling process of wet DCT (double clutch transmission) clutch
CN113075890A (en) * 2020-01-06 2021-07-06 广州汽车集团股份有限公司 Double-clutch oil filling control method and system, computer equipment and medium
CN113339423A (en) * 2021-05-31 2021-09-03 重庆青山工业有限责任公司 Method for preventing output pressure of wet DCT clutch from being overlarge
CN113565895A (en) * 2020-04-29 2021-10-29 蜂巢传动科技河北有限公司 Oil filling method for clutch and vehicle
CN113819159A (en) * 2021-08-18 2021-12-21 东风汽车集团股份有限公司 Pressure control method and system of clutch
CN114458705A (en) * 2022-02-09 2022-05-10 索特传动设备有限公司 Oil filling control method and device for clutch
CN114483819A (en) * 2021-12-14 2022-05-13 中国北方车辆研究所 Oil charging pressure compensation method for automatic transmission clutch under high-temperature working condition
CN114542700A (en) * 2021-12-14 2022-05-27 中国北方车辆研究所 Low-temperature oil charge control method for wet clutch
CN114776727A (en) * 2022-04-15 2022-07-22 潍柴动力股份有限公司 Control method and control device for oil filling of wet clutch and controller of vehicle
CN114962634A (en) * 2022-07-29 2022-08-30 盛瑞传动股份有限公司 Clutch oil charge control method and device, gearbox controller and storage medium
CN115574015A (en) * 2022-09-26 2023-01-06 重庆长安汽车股份有限公司 Wet-type double-clutch oil filling control method and system, electronic equipment and vehicle
CN116085402A (en) * 2023-04-06 2023-05-09 蜂巢传动科技邳州有限公司 Oil charge control method and device, electronic equipment and vehicle
WO2024164760A1 (en) * 2023-02-06 2024-08-15 浙江吉利控股集团有限公司 Gear-shifting control method, vehicle controller, and hybrid vehicle

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106286814A (en) * 2016-10-28 2017-01-04 安徽江淮汽车股份有限公司 A kind of oil-filled control method of wet-type dual-clutch and system
CN106286814B (en) * 2016-10-28 2018-02-13 安徽江淮汽车集团股份有限公司 A kind of oil-filled control method of wet-type dual-clutch and system
CN106499750A (en) * 2016-11-24 2017-03-15 安徽江淮汽车集团股份有限公司 A kind of automobile wet-type double-clutch Half engagement point self-learning method and system
CN106641238B (en) * 2016-12-13 2019-02-19 安徽江淮汽车集团股份有限公司 The oil-filled control method of wet dual clutch transmission and system
CN106641238A (en) * 2016-12-13 2017-05-10 安徽江淮汽车集团股份有限公司 Wet type dual-clutch transmission oil charging control method and system
CN106438763A (en) * 2016-12-14 2017-02-22 安徽江淮汽车集团股份有限公司 Self-learning method and system for pressure-current characteristics of wet clutch
CN106438763B (en) * 2016-12-14 2019-02-19 安徽江淮汽车集团股份有限公司 A kind of self-learning method and system of wet clutch pressure-current characteristics
CN107504171A (en) * 2017-09-22 2017-12-22 中国第汽车股份有限公司 The half hitch chalaza determination methods and system of a kind of hydraulic automatic speed variator clutch
CN108518478A (en) * 2018-04-08 2018-09-11 吉泰车辆技术（苏州）有限公司 Double-clutch speed changer main oil pressure self-adaptation control method and system
CN108518478B (en) * 2018-04-08 2019-10-18 泰牛汽车技术(苏州)有限公司 Double-clutch speed changer main oil pressure self-adaptation control method and system
CN112334687A (en) * 2018-06-20 2021-02-05 标致雪铁龙汽车股份有限公司 Control of torque transmitted during gear shifting in an automatic transmission of a vehicle
CN112334687B (en) * 2018-06-20 2022-03-15 标致雪铁龙汽车股份有限公司 Control of torque transmitted during gear shifting in an automatic transmission of a vehicle
CN111473068A (en) * 2019-01-24 2020-07-31 联合汽车电子有限公司 Lockup pressure control method for lockup clutch in torque converter
CN109882589A (en) * 2019-03-28 2019-06-14 世倍特科技投资(中国)有限公司 For adjusting the method and vehicle of the pressure of putting into gear of double-clutch speed changer
CN109882589B (en) * 2019-03-28 2020-11-13 纬湃科技投资(中国)有限公司 Method and vehicle for adjusting the engagement pressure of a dual clutch transmission
CN111981058A (en) * 2019-05-21 2020-11-24 上海汽车集团股份有限公司 Wet clutch pressure control method and system
CN111981058B (en) * 2019-05-21 2022-03-25 上海汽车集团股份有限公司 Wet clutch pressure control method and system
CN112413110B (en) * 2019-12-30 2022-05-06 盛瑞传动股份有限公司 Control method for oil filling time of automatic transmission in quick oil filling stage
CN112413110A (en) * 2019-12-30 2021-02-26 盛瑞传动股份有限公司 Control method for oil filling time of automatic transmission in quick oil filling stage
CN113075890A (en) * 2020-01-06 2021-07-06 广州汽车集团股份有限公司 Double-clutch oil filling control method and system, computer equipment and medium
CN113075890B (en) * 2020-01-06 2022-07-15 广州汽车集团股份有限公司 Double-clutch oil filling control method and system, computer equipment and medium
CN113565895A (en) * 2020-04-29 2021-10-29 蜂巢传动科技河北有限公司 Oil filling method for clutch and vehicle
CN111677855A (en) * 2020-08-04 2020-09-18 盛瑞传动股份有限公司 Control method for oil filling height of automatic transmission in quick oil filling stage
CN112098075B (en) * 2020-09-14 2022-01-28 广州汽车集团股份有限公司 Oil filling test method and device for synchronizer and rack test system
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