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Número de publicaciónCN105221731 A
Tipo de publicaciónSolicitud
Número de solicitudCN 201510676766
Fecha de publicación6 Ene 2016
Fecha de presentación13 Oct 2015
Fecha de prioridad13 Oct 2015
Número de publicación201510676766.6, CN 105221731 A, CN 105221731A, CN 201510676766, CN-A-105221731, CN105221731 A, CN105221731A, CN201510676766, CN201510676766.6
Inventores李延斌, 方立辉, 卢洪英, 丁麟, 丁帮伟, 王惠, 赵志旭, 辛海霞, 郝美刚, 沙洲, 郭凤男, 杨金民, 张新亮
Solicitante哈尔滨东安汽车发动机制造有限公司
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Enlaces externos:  SIPO, Espacenet
Backwashing control strategy for VFS valve of automatic transmission
CN 105221731 A
Resumen
The invention relates to the field of a control strategy for automatic transmissions, in particular to a backwashing control strategy for a VFS valve of an automatic transmission, and aims at solving the problem that due to impurity sediment, an existing VFS valve of an automatic transmission is clamped, and gear shifting cannot be achieved. The backwashing control strategy comprises the following steps that firstly, the VFS valve is controlled to obtain the steady pressure of the VFS valve, and the bound current of the VFS valve is obtained through the steady pressure; secondly, the VFS valve is kept for 5 s at the steady pressure; thirdly, the current of the VFS valve is controlled to fluctuate between 0 A and the bound current, and the fluctuation time is 1 s; and fourthly, the VFS valve is controlled to be periodically switched between the state in the second step and the state in the third step. The backwashing control strategy is simple in operation process and suitable for VFS valves of various automatic transmissions.
Reclamaciones(5)  traducido del chino
1.一种自动变速器VFS阀的反冲洗控制策略,其特征在于:包括以下步骤: 步骤一、对VFS阀进行控制得到VFS阀的稳态压力,通过稳态压力得到VFS阀的边界电流; 步骤二、将VFS阀在稳态压力情况下保持5s ; 步骤三、控制VFS阀的电流,使其电流在OA与所述边界电流之间或在边界电流与IA之间进行波动,波动时间为Is ; 步骤四、将控制VFS阀在步骤二和步骤三两种状态之间周期性切换。 An automatic transmission VFS valve backwash control policy, characterized by: comprising the following steps: Step 1, to obtain VFS VFS valve control valve steady pressure to give the boundary current VFS valve through steady pressure; Step Second, the VFS valve under steady pressure keeping 5s; step three, VFS valve control current to the current border between OA and the boundary between the current or currents IA were fluctuations, fluctuations in time is; step four, the control VFS valve periodically switch between steps two and step three states.
2.根据权利要求1所述一种自动变速器VFS阀的反冲洗控制策略,其特征在于:所述稳态压力的确定方法包括:在自动变速箱控制VFS阀油路的油压使该VFS阀对应的离合器传递扭矩在ONm至INm之间,选取此时的油路压力值的50%作为边界控制稳态压力。 According to claim 1, wherein an automatic transmission VFS valve backwash control strategy, wherein: the method of determining the steady-state pressure include: automatic gearbox control VFS valve manifold so that the hydraulic valve VFS corresponding clutch transmits torque between ONm to INm, select 50% at this time as the boundary line pressure control value steady pressure.
3.根据权利要求1所述一种自动变速器VFS阀的反冲洗控制策略,其特征在于:所述通过稳态压力得到VFS阀的边界电流的方法包括:根据VFS阀的“电流-压力”特性,确定稳定状态下,稳态压力值对应的边界电流。 According to claim 1, wherein an automatic transmission control VFS valve backwash policy, wherein: said pressure by the steady-state current obtained boundary of VFS valve comprising: a valve according to the VFS "Current - Pressure" feature under determine the steady state, steady pressure value corresponding to the current boundary.
4.根据权利要求3所述一种自动变速器VFS阀的反冲洗控制策略,其特征在于:所述稳定状态为通过PWM信号控制VFS阀电流保持不变时,VFS阀油压压力保持稳定时的状态。 According to claim 3, one of said automatic transmission control VFS valve backwash policy, wherein: said steady state signal by a PWM control VFS valve current remains unchanged, the hydraulic valve VFS pressure was kept constant during the status.
5.根据权利要求1所述一种自动变速器VFS阀的反冲洗控制策略,其特征在于:所述VFS阀电流的波形为1Hz的方波,方波的最大电流和最小电流分别为边界电流和OA或IA和边界电流。 5. The backwash control strategy for an automatic transmission according to claim VFS valve, wherein: the VFS valve current waveform is a square wave of 1Hz square wave current maximum and minimum currents of current and boundary OA or IA and boundary currents.
Descripción  traducido del chino
一种自动变速器VFS阀的反冲洗控制策略 Backwash control strategy for an automatic transmission valve VFS

技术领域 TECHNICAL FIELD

[0001 ] 本发明涉及一种自动变速器控制策略领略,具体涉一种自动变速器VFS阀的反冲洗控制策略,属于自动变速器控制住技术领域。 [0001] The present invention relates to an automatic transmission control strategy taste, particularly relates to an automatic transmission VFS backwash valve control strategies, are automatic transmission control technology.

背景技术 Background technique

[0002] 在自动变速器的工作过程中,需要由VFS阀控制变速器结合或分离相应的离合器或制动器以完成换档。 [0002] During operation of the automatic transmission, the transmission control valve required by the VFS combination or separation of the corresponding clutch or brake to complete the shift. 在自动变速器保持某一档位工作时,只有该档位对应的VFS阀工作以调节供给油压,其它VFS阀均处于非工作状态。 When the automatic transmission gear holding a job, only that gear corresponding VFS valve operates to regulate the supply of oil, other VFS valves are in an inactive state. 当长时间处于非工作状态的VFS阀进入工作状态,即由静止状态变为动作状态,VFS阀可能会由于杂质的沉积造成卡滞而无法实现换档。 When a long time in a non-operational state VFS valve into operation, that is, from the stationary state to the operation state, VFS valve may be due to the deposition of impurities caused by catching a shift can not be achieved. 现有自动变速箱VFS阀如果没有自清洁功能,出现卡滞故障时,只能将VFS阀从变速箱中拆下,进行人工清洗,极其不便。 Existing automatic transmission VFS valve if there is no self-cleaning function, there catching fault, only the VFS valve removed from the gearbox, manual cleaning is extremely inconvenient.

发明内容 SUMMARY

[0003] 本发明的目的是为了解决现有的自动变速器的VFS阀因杂质的沉淀造成卡滞而无法换挡的问题。 [0003] The object of the present invention is to solve the conventional automatic transmission VFS valve due to precipitation of impurities caused by catching and can not shift the problem.

[0004] 本发明的技术方案是:一种自动变速器VFS阀的反冲洗控制策略,包括以下步骤: [0004] aspect of the present invention are: an automatic transmission VFS valve backwash control strategy, including the steps of:

[0005] 步骤一、对VFS阀进行控制得到VFS阀的稳态压力,通过稳态压力得到VFS阀的边界电流; [0005] a step of VFS valve control valve VFS get steady pressure to give the boundary current VFS valve through steady pressure;

[0006] 步骤二、将VFS阀在稳态压力情况下保持5s ; [0006] Step two, the VFS valve under steady pressure keeping 5s;

[0007] 步骤三、控制VFS阀的电流,使其电流在OA与所述边界电流之间或在边界电流与IA之间进行波动,波动时间为Is ; [0007] Step three, control VFS valve current to the current border between OA and the boundary between the current or currents IA were fluctuations, fluctuations in time Is;

[0008] 步骤四、将控制VFS阀在步骤二和步骤三两种状态之间周期性切换。 [0008] Step four, the control VFS valve periodically switch between steps two and Step three states.

[0009] 电流和压力不会有太大偏差,微小的偏差对控制及表现没有影响。 [0009] Current and pressure will not be much deviation slight deviation has no effect on the control and performance. 压力表现是电流控制出来的。 Pressure performance is out of the current control.

[0010] 所述稳态压力的确定方法包括:在自动变速箱控制VFS阀油路的油压使该VFS阀对应的离合器传递扭矩在ONm至INm之间,选取此时的油路压力值的50%作为边界控制稳态压力。 [0010] The method of determining the steady-state pressure include: automatic gearbox control VFS valve manifold so that the hydraulic valve VFS corresponding clutch transmits torque between ONm to INm, select the line pressure value at this time 50% of the steady-state border control pressure.

[0011] 通过稳态压力得到VFS阀的边界电流的方法包括:根据VFS阀的“电流-压力”特性,确定稳定状态下,稳态压力值对应的边界电流。 [0011] Boundary current obtained by the steady-state pressure valve VFS method comprising: the VFS valve "Current - pressure" characteristics, to determine the steady state, the pressure value corresponding to the steady-state boundary current.

[0012] 所述稳定状态为通过PffM信号控制VFS阀电流保持不变时,VFS阀油压压力保持稳定时的状态。 Stabilizing the [0012] state is maintained by PffM signal control VFS valve current, VFS valve hydraulic pressure to maintain the stable state.

[0013] 所述电流的波动波形为1Hz的方波,方波的最大电流和最小电流分别为边界电流和OA或IA和边界电流。 [0013] The current fluctuation waveform is a square wave of 1Hz square wave maximum current and minimum current boundary currents are and OA or IA and boundary currents. 当电流电流以5s — Is — 5s — Is的周期性变化时,导致压力也随着周期性变化,用这种周期性变化的压力对VFS阀进行冲洗。 When the current is current to 5s - Is - 5s - Is when the cyclical changes, resulting in cyclical changes with pressure, pressure that changes periodically to flush valve VFS.

[0014] 本发明与现有技术相比具有以下效果:本发明的控制策略将自动变速器中非工作的VFS阀通以周期性变化的控制电流,该电流可将VFSVFS阀控制在工作区间的边界以维持较低的油压,同时周期性的充放油以对阀芯进行冲洗,防止杂质的沉积导致的VFS阀卡滞,本发明的控制策略方法对变速器的非工作VFS阀进行冲洗,操作过程简单,适用于任何自动变速器的VFS阀。 [0014] The present invention over the prior art has the following effects: the control strategy of the present invention will VFS valve automatic transmission Central Africa through a periodically varying control current, which can be VFSVFS control valve in the working range boundary to maintain a low oil pressure, while periodically charging and discharging of oil to flush the valve body, to prevent deposition of impurities VFS valve is stuck cause hysteresis control strategy of the present invention is a method for the transmission of non-working VFS flushing valve, the operation process is simple, applicable to any automatic transmission VFS valve.

附图说明 BRIEF DESCRIPTION

[0015] 图1,常低VFS阀策略控制及油压响应示意图,a为控制电流波形示意图,b为油路压力变化示意图; [0015] FIG. 1, very low VFS policy control valve and hydraulic schematic response, a schematic diagram of the control current waveform, b schematic changes to line pressure;

[0016] 图2,常高VFS阀策略控制及油压响应示意图,a为控制电流波形示意图,b为油路压力变化示意图。 [0016] FIG. 2, often high-VFS and hydraulic valve control strategy in response to a schematic, a schematic diagram of the control current waveform, b schematic changes oil pressure.

具体实施方式 detailed description

[0017] 实施例一:结合附图1说明本发明的具体实施方式,自动变速器的VFS常低阀,其控制过程包括: [0017] Embodiment 1: 1 binding illustrate specific embodiments of the present invention, the automatic transmission is very low VFS valve drawings, the control process comprising:

[0018] 1、通过PffM信号控制自动变速器中的VFS阀来控制油路的油压,将变速箱置于台架上,台架电机为变速器输入轴提供动力维持一定转速稳定运转,控制VFS阀缓慢提升所控油路油压,使对应离合器由打开状态逐渐向闭合状态变化,检测电机扭矩发生突变时的对应离合器的压力,离合器传递扭矩处在O-1Nm时,此时油压刚好压紧VFS阀所控离合器回位弹簧,测量此时回位弹簧的压力,所述回位弹簧的压力值因自动变速设计的不同而不同,需要通过实验获取,本实施方式的回位弹簧的压力为lbar,选取该压力值的50%为稳态压力值。 [0018] 1, to control the hydraulic oil through PffM signal controlling the automatic transmission in the VFS valve, with the transmission in the carriage, the carriage motor to power the transmission input shaft speed to maintain a certain stability operation, the control valve VFS the road gradually increased hydraulic oil control, so that the corresponding clutch gradually from the open state to the closed state change detecting abrupt changes in motor torque corresponding to the clutch pressure of the clutch transmission torque at O-1Nm time, when the oil pressure just pressing VFS the clutch control valve return spring, this time measuring the pressure of the return spring, the return spring pressure values vary automatic transmission designed and different, need to experiment to obtain the present embodiment, the return spring pressure lbar select 50% of the pressure value for steady-state pressure.

[0019] 2、根据VFS阀的“电流-压力”特性,利用现有的电磁阀电流-压力测试方法,确定稳定条件下,稳态压力值对应的边界电流,该边界电流的电流值,一般在0.1-0.3A左右,本实施方式的边界电流值为0.2A。 [0019] 2. The VFS valve "Current - Pressure" feature, the current use of conventional solenoid valves - Pressure test methods to determine the stability under conditions of steady-state boundary current pressure value corresponding to the current value of the current boundary, the general about 0.1-0.3A, the current boundary of the present embodiment is 0.2A.

[0020] 3、稳态压力保持时间保持5s,以保证VFS阀附近的油流出整个油路,控制电流拨动 [0020] 3, the steady-state pressure holding time keeping 5s, to ensure that the VFS valve near the outflow of the entire oil circuit, the control current slide

[0021 ] 4、控制VFS阀的电流,使其电流在OA与所述边界电流之间进行波动,该方波的振动频率为10Hz,方波的高低电流分别为边界电流、0A,波动时间在Is ; [0021] 4, the current control VFS valve, so that the current at the boundary between the OA and current fluctuations in the vibration frequency of the square wave of 10Hz, the current level of the square wave current boundaries respectively, 0A, fluctuations in time Is;

[0022] 5、控制VFS阀在步骤3和步骤4两种状态之间周期性切换. [0022] 5, the control VFS valve periodically switch between steps 3 and 4 two states.

[0023] 实施例二:结合图2说明本实施方式,本实施例与实施例一的区别在于:VFS阀的边界电流在0.9A至IA之间,控制VFS阀的电流在边界电流和IA之间波动,波动频率为10Hz,波动时间为ls,本实施方式的边界电流为0.9A,。 [0023] Example II: in conjunction with FIG. 2 illustrates the present embodiment, the present embodiment differs from the example embodiment in that a: Boundary current VFS valve between 0.9A to IA, VFS valve control current at the boundary of the current and IA fluctuated, the fluctuation frequency of 10Hz, fluctuations time ls, the current boundary of the present embodiment is 0.9A ,.

[0024] 由图1和图2可见,保持稳态压力5s,波动Is,周期性控制,在Is的波动时间内,电磁阀在开关两种状态反复切换,产生振动,将电磁阀通道内的杂质震落,在5s的稳态时间内进行充油,用油将电磁阀附近带有杂质的油冲离电磁阀。 [0024] seen from Figure 1 and Figure 2, to maintain the steady-state pressure 5s, Is fluctuations, periodic control, the fluctuation in the time Is, the solenoid valve switch two states repeatedly switch, vibration, the passage of the electromagnetic valve impurities fear of falling, oil-filled conducted in steady time 5s, oil near the oil solenoid valves with impurities washed from the solenoid valve.

Citas de patentes
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CN1210215A *2 Sep 199810 Mar 1999本田技研工业株式会社Control system for automatic vehicle transmission
CN101096972A *27 Jun 20072 Ene 2008通用汽车公司Self cleaning logic valve assembly
CN102841550A *6 Sep 201226 Dic 2012安徽江淮汽车股份有限公司Washing control system for double-clutch automatic gearbox
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Otras citas
Referencia
1 *王迎: "重型车辆自动变速器液压操纵系统换挡过程研究", 《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》
Clasificaciones
Clasificación internacionalF16H61/02, F16H57/00
Eventos legales
FechaCódigoEventoDescripción
6 Ene 2016C06Publication
3 Feb 2016C10Entry into substantive examination