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1. 发明授权

US5062050A Continuously variable transmission line pressure control 失效
标题翻译：连续可变传动线压力控制
公开(公告)号：US5062050A
公开(公告)日：1991-10-29
申请号：US422588
申请日：1989-10-17
申请人： Werner P. Petzold , William P. Umlauf
发明人： Werner P. Petzold , William P. Umlauf
IPC分类号： F16H9/00 , F16H59/72 , F16H61/00 , F16H61/02 , F16H61/04 , F16H61/06 , F16H61/10 , F16H61/662
CPC分类号： F16H61/66254 , F16H61/0021 , F16H61/66272 , F16H2061/0078 , F16H59/72 , Y10T477/6203 , Y10T477/624
摘要： A line pressure control system for a continuously variable transmission which includes a continuously variable member, a clutch and a pressure transducer for providing a feedback signal for both closed loop line pressure and closed loop clutch control. The line pressure control system includes a closed loop control strategy and an open loop control strategy which operate independently, and initial conditions are determined and set to prevent discontinuities in the output. The closed loop control strategy includes proportional and integral gain terms. The control system is adaptable to utilize of a variety of different open loop control strategies to provide a schedule response to a desired line pressure or a maximum or minimum line pressure when appropriate. The control system also optionally provides for a transition from closed loop control to open loop control and vice versa in response to the output parameters generated.

2. 发明授权

US5206805A Continuously variable transmission clutch control system including special start mode operation 失效
标题翻译：连续可变变速箱离合器控制系统包括特殊启动模式运行
公开(公告)号：US5206805A
公开(公告)日：1993-04-27
申请号：US377747
申请日：1989-07-06
申请人： Werner P. Petzold , William P. Umlauf
发明人： Werner P. Petzold , William P. Umlauf
IPC分类号： B60W10/02 , B60W30/18 , F16D48/08 , F16H61/66 , F16H61/662
CPC分类号： F16H61/66 , B60W10/02 , B60W10/101 , B60W30/18 , F16H61/66254 , B60W2510/0283 , B60W2510/0604 , B60W2510/0638 , B60W2710/021 , B60W2710/1005 , F16H63/46
摘要： The system provides an improved clutch control system for use in a continuously variable transmission system. The system provides for generation of a clutch pressure setpoint to re-engage the clutch during special conditions in which the torque created by the vehicle inertia would tend to drive the engine to an undesirable operating point. Clutch slip speed is monitored as a difference value and integrated to provide a gradually decreasing error signal to return the clutch input speed to the clutch output speed, at which time clutch lockup will occur. Additionally, throttle position is monitored and a maximum torque schedule used to provide a maximum torque signal to prevent driver demand from undesirably racing the engine in similar conditions. A filtered output of the maximum torque schedule provides a pressure setpoint signal representative of actual driver demand which may be added to the clutch slip speed error signal to generate the clutch pressure setpoint. In this fashion, an engine may be loaded by an increase in the clutch pressure at the same time that the clutch input speed is returned to the clutch output speed to restore clutch lock up. Addition of a constant value to the clutch slip speed error signal ensures positive clutch lockup.
摘要翻译：该系统提供了一种用于无级变速器系统的改进的离合器控制系统。该系统提供产生离合器压力设定点以在特定条件下重新接合离合器，在特殊情况下，由车辆惯性产生的扭矩将倾向于将发动机驱动到不期望的操作点。将离合器滑差速度作为差值进行监控并集成以提供逐渐减小的误差信号，以将离合器输入速度返回到离合器输出速度，此时将发生离合器锁定。此外，监控节气门位置，并且使用最大扭矩调度表来提供最大转矩信号，以防止驾驶员在类似条件下不期望地使发动机起飞。最大扭矩计划的过滤输出提供表示实际驾驶员需求的压力设定点信号，其可以被添加到离合器滑差速度误差信号以产生离合器压力设定点。以这种方式，可以通过增加离合器压力来加载发动机，同时离合器输入速度返回到离合器输出速度以恢复离合器锁定。为离合器滑差速度误差信号增加一个恒定值可确保离合器锁定正常。

3. 发明授权

US5189611A Temperature compensation technique for a continuously variable transmission control system 失效
标题翻译：一种无级变速器控制系统的温度补偿技术
公开(公告)号：US5189611A
公开(公告)日：1993-02-23
申请号：US488436
申请日：1990-02-27
申请人： Werner P. Petzold , William P. Umlauf
发明人： Werner P. Petzold , William P. Umlauf
IPC分类号： F16H59/72 , F16H61/00 , F16H61/662
CPC分类号： F16H61/66254 , F16H2061/0078 , F16H59/72 , Y02T10/84 , Y10T477/653
摘要： Temperature compensation techniques are utilized to provide consistent system response in a continuously variable transmission system or other control system over a range of expected operating temperatures. Variations in the independent transfer functions for various control functions, such as ratio control, line pressure control and clutch control are monitored or measured. Appropriate modifications to system operating parameters are scheduled based upon the measured, simulated or predicted variations in the transfer functions as previously determined. In operation, the disclosed system senses temperature and provides the appropriate compensation and gain parameter modifications in accordance with the selected schedules.
摘要翻译：温度补偿技术用于在一系列预期工作温度下在无级变速器系统或其他控制系统中提供一致的系统响应。监控或测量各种控制功能的独立传递功能的变化，如比率控制，管路压力控制和离合器控制。基于如先前确定的传递函数中的测量，模拟或预测的变化来调度对系统操作参数的适当修改。在操作中，所公开的系统感测温度，并根据所选择的时间表提供适当的补偿和增益参数修改。

4. 发明授权

US4982822A Control system for controlling the line pressure in a continuously variable transmission 失效
标题翻译：用于控制无级变速器中的管路压力的控制系统
公开(公告)号：US4982822A
公开(公告)日：1991-01-08
申请号：US936527
申请日：1986-12-01
申请人： Werner P. Petzold , William P. Umlauf
发明人： Werner P. Petzold , William P. Umlauf
IPC分类号： B60W10/02 , B60W30/18 , F16H59/06 , F16H61/00 , F16H61/66 , F16H61/662
CPC分类号： B60W30/18 , B60W10/02 , B60W10/101 , F16H61/66 , F16H61/66259 , B60W2050/0008 , B60W2050/0012 , B60W2050/0052 , B60W2050/0058 , B60W2510/107 , B60W2510/1075 , B60W2710/1005 , F16H63/46 , Y10T477/6203
摘要： A pressure transducer, which senses clutch pressure and effects closed loop clutch control in a continuously variable transmission, is used after the clutch is fully engaged to provide closed loop line pressure control to a desired setpoint, which line pressure regulates the tension on the belt in the transmission. Only a single transducer is needed since there is a known relationship between the clutch and line pressures when the clutch is locked up. Prior to lockup, the line pressure is governed by an open loop controller which establishes the line pressure at a level higher than that called for by the setpoint. This ensures that the line pressure will be high enough to provide the required tension on the belt so that it will not slip. After the clutch is engaged, the closed loop line pressure controller (which includes both the open loop line pressure controller and the closed loop clutch controller) establishes the line pressure at the setpoint. For stable operation, the closed loop controller responds only to relatively slow changes of the setpoint. In response to fast changes, the closed loop controller is made ineffective so that the line pressure will be determined only by the open loop controller and will be greater than the level called for by the setpoint.
摘要翻译：在离合器完全接合之后，使用感测离合器压力并实现闭环离合器控制的压力传感器，以提供闭环线路压力控制到期望的设定点，该线路压力调节带上的张力传输。只需要一个传感器，因为当离合器被锁定时离合器和管路压力之间存在已知的关系。在锁定之前，管路压力由开环控制器控制，该控制器将管路压力设置在高于设定值所要求的水平。这确保线路压力将足够高以在带上提供所需的张力，使得其不会滑动。在离合器接合之后，闭环线压力控制器（其包括开环管路压力控制器和闭环离合器控制器）建立设定点处的管路压力。为了稳定运行，闭环控制器只响应设定点相对较慢的变化。响应快速更改，闭环控制器无效，因此线路压力将仅由开环控制器确定，并将大于设定值所要求的电平。

5. 发明授权

US5106053A Solenoid operated hydraulic control valve 失效
标题翻译：电磁式液压控制阀
公开(公告)号：US5106053A
公开(公告)日：1992-04-21
申请号：US612069
申请日：1990-11-09
申请人： Alan L. Miller , George H. Studtmann , Todd L. King , Kenneth R. Gallaher , Jerome J. Zawada , William P. Umlauf
发明人： Alan L. Miller , George H. Studtmann , Todd L. King , Kenneth R. Gallaher , Jerome J. Zawada , William P. Umlauf
IPC分类号： F16F9/46
CPC分类号： F16F9/46 , B60G2202/24 , B60G2500/106
摘要： A solenoid operated hydraulic control valve system including a solenoid operated valve having a specially ported spool valve to statically balance spool forces in the opened and closed positions.
摘要翻译：一种电磁操作的液压控制阀系统，其包括具有专门阀芯的电磁阀，以在打开和关闭位置静态平衡阀芯力。

6. 发明授权

US4947970A Dual clutch control system 失效
标题翻译：双离合器控制系统
公开(公告)号：US4947970A
公开(公告)日：1990-08-14
申请号：US268786
申请日：1988-11-08
申请人： Alan L. Miller , Susan W. Schultz , William P. Umlauf
发明人： Alan L. Miller , Susan W. Schultz , William P. Umlauf
IPC分类号： B60W10/02 , B60W10/04 , B60W10/10 , F16D48/02 , F16D48/06
CPC分类号： F16D48/066 , B60W2710/0644 , F16D2500/1026 , Y10T477/40 , Y10T477/6425
摘要： A control system for a vehicle drive train includes a controller which is responsive to a throttle signal from a throttle position sensor and which controls a clutch unit to control speed and acceleration and to obtain optimum driver "feel". The system is responsive to advancing movement of a throttle to a more open position to efficiently utilize rotating energy of engine parts for more rapid vehicle acceleration.
摘要翻译：用于车辆传动系的控制系统包括响应于来自节气门位置传感器的油门信号并控制离合器单元以控制速度和加速度并获得最佳驾驶员“感觉”的控制器。该系统响应于将节气门的运动推进到更开放的位置，以有效地利用发动机部件的旋转能量来实现更快速的车辆加速。

7. 发明授权

US4988967A Solenoid operated hydraulic control valve 失效
标题翻译：电磁式液压控制阀
公开(公告)号：US4988967A
公开(公告)日：1991-01-29
申请号：US262152
申请日：1988-10-14
申请人： Alan L. Miller , George H. Studtmann , Todd L. King , Kenneth R. Gallaher , Jerome J. Zawada , William P. Umlauf
发明人： Alan L. Miller , George H. Studtmann , Todd L. King , Kenneth R. Gallaher , Jerome J. Zawada , William P. Umlauf
IPC分类号： F16K31/06 , F16F9/46
CPC分类号： F16F9/46 , B60G2202/24 , B60G2500/106
摘要： A solenoid operated hydraulic control valve which has a specially ported spool valve to statically balance spool force in the opened and closed positions, and a specially designed solenoid operator which includes very small ratios of gaps to cross-sectional areas for the working and non-working gaps between the armature and stator.

8. 发明授权

US4793454A Continuously variable transmission clutch control system 失效
标题翻译：连续变速离合器控制系统
公开(公告)号：US4793454A
公开(公告)日：1988-12-27
申请号：US025391
申请日：1987-03-13
申请人： Werner P. Petzold , Alan L. Miller , William P. Umlauf
发明人： Werner P. Petzold , Alan L. Miller , William P. Umlauf
IPC分类号： B60W10/02 , B60W10/04 , B60W10/107 , B60W30/19 , F16D48/02 , F16D48/06 , F16H59/18 , F16H61/02 , F16H61/66 , F16H61/662 , F16H63/46 , B60K41/02 , B60K41/28
CPC分类号： B60W30/19 , B60W10/02 , B60W10/04 , B60W10/06 , B60W10/101 , B60W10/107 , B60W30/1819 , F16H61/66254 , B60W2510/0241 , B60W2710/0644 , B60W2710/0666 , F16H2059/183 , F16H59/18 , Y10T477/6203 , Y10T477/623 , Y10T477/624
摘要： A clutch control system provides and regulates pressure at a clutch for transmitting torque from an engine to a drive train through a continuously variable transmission. A positive torque value is determined for each throttle setting and provided as a pressure input signal. Engine speed is monitored through a closed loop feedback system to provide an error signal to the desired pressure setting. A pressure control loop monitors pressure at the clutch through a closed loop feedback system to maintain the pressure at the clutch at a desired level. Filtering is provided in the torque and engine speed loops to provide for a more realistic response to driver demand. Incorporation of belt ratio factor in the engine speed control loop further provides for consistent and accurate response to driver demand variations at differing transmission drive levels. Overall line pressure within the associated hydraulic system further controls a proportional gain in the pressure control loop to provide appropriate response. Phase compensation and integral dynamic phase factors in the pressure control loop further guarantee a zero level steady state error signal and the generation of accurate control over the pressure control valve.

9. 发明授权

US4811225A Ratio control technique for continuously variable transmission 失效
标题翻译：无级变速器比率控制技术
公开(公告)号：US4811225A
公开(公告)日：1989-03-07
申请号：US25389
申请日：1987-03-13
申请人： Werner P. Petzold , William P. Umlauf
发明人： Werner P. Petzold , William P. Umlauf
IPC分类号： B60W10/04 , B60W10/02 , B60W10/107 , B60W30/19 , F16H59/06 , F16H59/10 , F16H59/18 , F16H61/02 , F16H61/66 , F16H61/662 , F16H63/06 , F16H11/06 , F16H55/56
CPC分类号： F16H61/66254 , B60W10/02 , B60W10/04 , B60W10/101 , B60W10/107 , B60W30/1819 , B60W30/19 , B60W2510/0241 , B60W2510/0638 , B60W2540/10 , B60W2540/106 , B60W2710/023 , F16H2059/183 , F16H59/18 , Y10T477/6203 , Y10T477/62429
摘要： A ratio control system for use in a continuously variable transmission is disclosed in conjunction with an improved technique for operation thereof. Individual gain schedules provide proportional gain in response to a selected one of a number of modes dependent upon clutch input speed, transmission belt ratio, or engine set point. Engine speed set point is determined as a function of a set point schedule in conjunction with a limiter and a filter to provide a gradual response to rapid changes in a throttle input or driver demand signal and vehicle speed. The error signal generated as an output of any of the proportional gain loops is integrated and combined with a null signal to provide a signal to generate a duty cycle for a pulse width modulation controlled electrohydraulic control valve to control the pressure to the primary sheave in a continuously variable transmission system for modifying the belt ratio. An integration function may be used or bypassed at appropriate times to account for physical limitations in the possible range for the belt ratio. Full low and full overdrive conditions are provided through an open loop gain corresponding to maximum and minimum duty cycle signals.

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