公开(公告)号：US5597292A

公开(公告)日：1997-01-28

申请号：US490360

申请日：1995-06-14

申请人： Seong K. Rhee ,  Alistair G. Taig ,  Kenneth S. Towers

发明人： Seong K. Rhee ,  Alistair G. Taig ,  Kenneth S. Towers

IPC分类号： B60T8/26 ,  B60T8/40 ,  B60T8/44 ,  F04B17/00 ,  F04B43/04

CPC分类号： B60T8/441 ,  B60T8/4018 ,  B60T8/4031 ,  B60T8/447 ,  F04B17/003 ,  F04B43/04

摘要： An ultrasonic pump having a first housing connected to a second housing to create a cavity therebetween. The first housing has a central stem that extends into the cavity with a passage for connecting the cavity with an outlet port. The second housing has an inlet port for communicating hydraulic fluid to the cavity. A plurality of piezoelectric disc are located on the stem by a first diaphragm to defined a actuation chamber within the cavity. The first diaphragm engages the first housing and stem to isolate the piezoelectric disc from hydraulic fluid supplied to the cavity and place a predetermined axial force on the piezoelectric disc. A second diaphragm located in the first and second housing has first and second surfaces which are substantially equal distances from the passage and the inlet port. Thereafter, air is bleed from the cavity to assure that only hydraulic fluid is present in the cavity. The piezoelectric disc are connected to a source of electrical energy and in response to an excitation signal develop a fluctuating force. The fluctuating force has an axial component and a radial component and the axial component alone is communicated to the first diaphragm. After the axial component of the fluctuating force overcomes the predetermined axial force, the fluid pressure of the hydraulic fluid in the cavity changes as a function of the axial component force. This change in fluid pressure causes sequential movement of first and second surfaces of the second diaphragm toward the inlet port and passage and as a result hydraulic fluid is transmitted from the cavity through the passage to the outlet port.

摘要翻译： 一种超声波泵，其具有连接到第二壳体的第一壳体，以在它们之间形成空腔。 第一壳体具有中心杆，其延伸到腔体中，具有用于将腔体与出口端口连接的通道。 第二壳体具有用于将液压流体连通到腔的入口。 多个压电盘通过第一隔膜位于杆上，以在空腔内限定致动室。 第一隔膜接合第一壳体和杆，以将压电盘与供应到空腔的液压流体隔离，并将预定的轴向力放置在压电盘上。 位于第一和第二壳体中的第二隔膜具有与通道和入口基本相等的距离的第一和第二表面。 此后，空气从空腔排出，以确保只有液压流体存在于空腔中。 压电盘连接到电能源并且响应于激励信号产生波动的力。 波动力具有轴向分量和径向分量，并且单独的轴向分量连通到第一隔膜。 在波动力的轴向分量克服预定的轴向力之后，空腔中的液压流体的流体压力作为轴向分力的函数而变化。 流体压力的这种变化导致第二隔膜的第一和第二表面顺序地移动到入口和通道，结果液压流体从空腔通过通道传送到出口。

公开(公告)号：US20110254359A1

公开(公告)日：2011-10-20

申请号：US12763816

申请日：2010-04-20

申请人： Milan Klimes ,  Timothy J. Albert ,  Gregory P. Goodzey ,  Kevin Johnson ,  Kenneth S. Towers

发明人： Milan Klimes ,  Timothy J. Albert ,  Gregory P. Goodzey ,  Kevin Johnson ,  Kenneth S. Towers

IPC分类号： B60T13/68 ,  B60T13/16

CPC分类号： B60T7/20 ,  B60T7/042 ,  B60T8/4081 ,  B60T13/662 ,  B60T13/686

摘要： A system for use in a vehicle with a brake pedal and a brake circuit which includes a master cylinder assembly, a sensor assembly configured to generate a pedal position signal indicative of position of the brake pedal, an electronic control unit configured to (i) generate a brake request signal in response to generation of the pedal position signal, and (ii) generate a selector control signal, and a selector valve assembly operable in a first mode and a second mode, the selector valve assembly being moved from the first mode to the second mode in response to generation of the selector control signal, the master cylinder assembly is (i) isolated from fluid communication with the brake circuit when the selector valve assembly is positioned in the first mode, and (ii) in fluid communication with the brake circuit when the selector valve assembly is positioned in the second mode.

摘要翻译： 一种用于具有制动踏板和制动回路的车辆的系统，包括主缸组件，构造成产生指示制动踏板位置的踏板位置信号的传感器组件;电子控制单元，被配置为（i）产生 响应于所述踏板位置信号的产生而产生制动请求信号，以及（ii）产生选择器控制信号，以及可在第一模式和第二模式下操作的选择阀组件，所述选择阀组件从所述第一模式移动到 响应于选择器控制信号的产生的第二模式，主缸组件（i）当选择阀组件位于第一模式时与（1）与制动回路的流体连通隔离，并且（ii）与 当选择阀组件位于第二模式时，制动回路。

公开(公告)号：US5553929A

公开(公告)日：1996-09-10

申请号：US524272

申请日：1995-09-06

申请人： Robert M. Rivard ,  Michael J. Schneider ,  Tamas I. Pattantyus ,  Kenneth S. Towers ,  Jack R. Phipps

发明人： Robert M. Rivard ,  Michael J. Schneider ,  Tamas I. Pattantyus ,  Kenneth S. Towers ,  Jack R. Phipps

IPC分类号： B60T8/72 ,  B60T8/1763 ,  B60T8/44 ,  B60T8/66 ,  B60T8/32

CPC分类号： B60T8/17636 ,  B60T8/445 ,  Y10S303/04

摘要： Improvements in vehicle antilock braking systems of the type having an operator controlled master cylinder (11) and a second source (55, 57) of pressurized hydraulic fluid for selectively supplying rebuild pressure after an antilock event are disclosed. The improved system is selectively operable in one of three braking modes, a normal braking mode (119) where braking force is proportional to an operator brake pedal pressure, an enhanced anti-skid braking mode (69) where braking force may be maintained at a maximum nonskid level, and a conventional anti-skid braking mode (71) where braking force follows a cyclic pattern of fluid pressure bleed and build. The system includes circuitry (17, 19, 35, 37, 93, 95) for determining the speed of each wheel and an arrangement (59) operable independently of any vehicle wheels for determining vehicle deceleration. This comparison normally invokes the enhanced anti-skid braking mode. In the enhanced mode, the system is continually searching for an optimum wheel speed reference (39) by determining (119) on which side of the peak of a mu-slip curve the vehicle is operating, for example, by calculating the sign of the slope of the mu-slip curve at the current vehicle operating point, and then incrementing (88) a prior wheel speed reference by a value (79) which changes the wheel speed reference toward the peak (75) of the mu-slip curve thereby calculating an updated wheel speed reference to control appropriately the braking system. The accuracy of the determined vehicle deceleration, and in particular, of the accelerometer is confirmed by comparison (63) to an expected deceleration based on operator brake pressure, and the conventional anti-skid braking mode is substituted for the enhanced anti-skid braking mode in the event the determined vehicle deceleration is determined to be inaccurate. The enhanced anti-skid mode utilizes a pulse width modulated solenoid actuated two position valve (41, 43) operable in one position to provide a fluid flow path from the braking device, and in the other position to provide a fluid flow path from a second source to the braking device.

公开(公告)号：US5553930A

公开(公告)日：1996-09-10

申请号：US524271

申请日：1995-09-06

申请人： Robert M. Rivard ,  Michael J. Schneider ,  Tamas I. Pattantyus ,  Kenneth S. Towers ,  Jack R. Phipps

发明人： Robert M. Rivard ,  Michael J. Schneider ,  Tamas I. Pattantyus ,  Kenneth S. Towers ,  Jack R. Phipps

IPC分类号： B60T8/72 ,  B60T8/1763 ,  B60T8/44 ,  B60T8/66 ,  B60T8/32

CPC分类号： B60T8/17636 ,  B60T8/445 ,  Y10S303/04

摘要： Improvements in vehicle antilock braking systems of the type having an operator controlled master cylinder (11) and a second source (55, 57) of pressurized hydraulic fluid for selectively supplying rebuild pressure after an antilock event are disclosed. The improved system is selectively operable in one of three braking modes, a normal braking mode (119) where braking force is proportional to an operator brake pedal pressure, an enhanced anti-skid braking mode (69) where braking force may be maintained at a maximum nonskid level, and a conventional anti-skid braking mode (71) where braking force follows a cyclic pattern of fluid pressure bleed and build. The system includes circuitry (17, 19, 35, 37, 93, 95) for determining the speed of each wheel and an arrangement (59) operable independently of any vehicle wheels for determining vehicle deceleration. This comparison normally invokes the enhanced anti-skid braking mode. In the enhanced mode, the system is continually searching for an optimum wheel speed reference (39) by determining (119) on which side of the peak of a mu-slip curve the vehicle is operating, for example, by calculating the sign of the slope of the mu-slip curve at the current vehicle operating point, and then incrementing (88) a prior wheel speed reference by a value (79) which changes the wheel speed reference toward the peak (75) of the mu-slip curve thereby calculating an updated wheel speed reference to control appropriately the braking system. The accuracy of the determined vehicle deceleration, and in particular, of the accelerometer is confirmed by comparison (63) to an expected deceleration based on operator brake pressure, and the conventional anti-skid braking mode is substituted for the enhanced anti-skid braking mode in the event the determined vehicle deceleration is determined to be inaccurate. The enhanced anti-skid mode utilizes a pulse width modulated solenoid actuated two position valve (41, 43) operable in one position to provide a fluid flow path from the braking device, and in the other position to provide a fluid flow path from a second source to the braking device.

公开(公告)号：US5222787A

公开(公告)日：1993-06-29

申请号：US616149

申请日：1990-11-20

申请人： William C. Eddy ,  Kenneth S. Towers

发明人： William C. Eddy ,  Kenneth S. Towers

IPC分类号： B60T8/26

CPC分类号： B60T8/4072 ,  B60T8/266

摘要： A braking system (8) comprising: a master cylinder (10); rear brakes (12a,b) communicated to the master cylinder (10); front brakes (14a,b) hydraulically isolated from the rear brakes; an isolation valve (16; 16') interposing the master cylinder (10) and the front brakes (14a,b) having a first state communicating the master cylinder to the front brakes and a second state isolating the master from the front brakes and connecting a pump (42) to the front brakes; a motor (44) for powering the pump (42); a reservoir (54) communicated to an inlet of the pump (42); a control unit (40) for causing front brake pressure to follow rear brake pressure comprising: a first pressure sensor (30) for generating a signal indicative of rear brake pressure; electric proportioning device (94) for generating a commanded front brake pressure signal (P.sub.C); a second pressure sensor (32) for generating a signal of actual front brake pressure (P.sub.A); a comparator (96) for comparing the command brake pressure signal to the actual brake pressure signal and for generating an error signal (P.sub.E); a motor control circuit responsive to an error signal for activating the motor and for powering the pump (42).

摘要翻译： 一种制动系统（8），包括：主缸（10）; 后制动器（12a，b）传递到主缸（10）; 前制动器（14a，b）与后制动器液压隔离; 设置主缸（10）和前制动器（14a，b）的隔离阀（16; 16'）具有使主缸与前制动器相通的第一状态，以及将主制动器与前制动器隔离并连接 向前制动器的泵（42）; 用于给泵（42）供电的马达（44）; 与所述泵（42）的入口连通的贮存器（54）; 用于使前制动压力跟随后制动压力的控制单元（40），包括：用于产生指示后制动压力的信号的第一压力传感器（30） 电动配重装置（94），用于产生指令的前制动压力信号（PC）; 用于产生实际前制动压力（PA）的信号的第二压力传感器（32）; 比较器（96），用于将指令制动压力信号与实际制动压力信号进行比较，并产生误差信号（PE）; 电动机控制电路，其响应于用于启动电动机并为泵（42）供电的误差信号。

公开(公告)号：US4584488A

公开(公告)日：1986-04-22

申请号：US670687

申请日：1984-11-13

申请人： Kenneth S. Towers ,  William C. Eddy

发明人： Kenneth S. Towers ,  William C. Eddy

IPC分类号： B62D5/06 ,  B62D5/10 ,  H03K5/151 ,  H03K7/08 ,  H03K3/00

CPC分类号： B62D5/06 ,  B62D5/10 ,  H03K5/151 ,  H03K7/08 ,  Y10T74/20256

摘要： An electronic controller for generating a pair of mutually exclusive pulse train signals. The controller having an offset generator for biasing the input signal about a midpoint value, a first and second difference amplifier for generating a first and second difference signal, one difference signal corresponding to the difference between the biased input signal and the midpoint value and the other difference signal corresponding to the inverted difference between the biased input signal and the midpoint value, a saw tooth wave generator generating a saw tooth wave having its valleys clipped to a predetermined value, and a pair of comparators, one generating a pulse train signal in response to the saw tooth wave and the first difference signal and the other generating the second pulse train signal in response to the saw tooth wave and the second difference signal.

摘要翻译： 一种用于产生一对相互排斥的脉冲串信号的电子控制器。 所述控制器具有用于偏置所述输入信号关于中点值的偏移发生器，用于产生第一和第二差分信号的第一和第二差分放大器，对应于所述偏置输入信号和所述中点值之间的差的一个差分信号， 差分信号对应于偏置输入信号和中点值之间的反相差，锯齿波发生器产生锯齿波，其锯齿波被限制到预定值，以及一对比较器，一个响应地产生脉冲串信号 相对于锯齿波和第一差分信号，另一个响应于锯齿波和第二差分信号产生第二脉冲串信号。

公开(公告)号：US08936322B2

公开(公告)日：2015-01-20

申请号：US12763833

申请日：2010-04-20

申请人： Milan Klimes ,  Timothy J. Albert ,  Gregory P. Goodzey ,  Kevin Johnson ,  Kenneth S. Towers

发明人： Milan Klimes ,  Timothy J. Albert ,  Gregory P. Goodzey ,  Kevin Johnson ,  Kenneth S. Towers

IPC分类号： B60T13/74 ,  B60T13/66 ,  B60T7/04 ,  B60T7/20 ,  B60T8/40 ,  B60T13/68 ,  B60T8/42

CPC分类号： B60T13/662 ,  B60T7/042 ,  B60T7/20 ,  B60T8/4081 ,  B60T13/686

摘要： A system for use in a vehicle with a brake pedal and a brake circuit. The system includes a master cylinder assembly configured to pressurize fluid therein in response to movement of the brake pedal, a sensor assembly configured to generate a pedal position signal indicative of position of the brake pedal, an electronic control unit configured to (i) generate a brake request signal in response to generation of the pedal position signal, and (ii) generate a selector control signal, and a selector valve assembly being moved from a first mode to a second mode in response to generation of the selector control signal, the master cylinder assembly is (i) isolated from fluid communication with the brake circuit when the selector valve assembly is positioned in the first mode, and (ii) in fluid communication with the brake circuit when the selector valve assembly is positioned in the second mode.

摘要翻译： 一种用于具有制动踏板和制动回路的车辆的系统。 该系统包括：主缸组件，其构造成响应于制动踏板的运动而加压其中的流体;传感器组件，被配置为产生指示制动踏板位置的踏板位置信号;电子控制单元，其被配置为（i） 响应于踏板位置信号的产生而产生制动请求信号，以及（ii）产生选择器控制信号，并且选择阀组件响应于选择器控制信号的产生而从第一模式移动到第二模式，主器件 气缸组件是（i）当选择阀组件位于第一模式时与制动回路的流体连通隔离，以及（ii）当选择阀组件位于第二模式时与制动回路流体连通。

公开(公告)号：US20110254360A1

公开(公告)日：2011-10-20

申请号：US12763833

申请日：2010-04-20

申请人： Milan Klimes ,  Timothy J. Albert ,  Gregory P. Goodzey ,  Kevin Johnson ,  Kenneth S. Towers

发明人： Milan Klimes ,  Timothy J. Albert ,  Gregory P. Goodzey ,  Kevin Johnson ,  Kenneth S. Towers

IPC分类号： B60T13/68 ,  B60T13/16

CPC分类号： B60T13/662 ,  B60T7/042 ,  B60T7/20 ,  B60T8/4081 ,  B60T13/686

摘要： A system for use in a vehicle with a brake pedal and a brake circuit. The system includes a master cylinder assembly configured to pressurize fluid therein in response to movement of the brake pedal, a sensor assembly configured to generate a pedal position signal indicative of position of the brake pedal, an electronic control unit configured to (i) generate a brake request signal in response to generation of the pedal position signal, and (ii) generate a selector control signal, and a selector valve assembly being moved from a first mode to a second mode in response to generation of the selector control signal, the master cylinder assembly is (i) isolated from fluid communication with the brake circuit when the selector valve assembly is positioned in the first mode, and (ii) in fluid communication with the brake circuit when the selector valve assembly is positioned in the second mode.

摘要翻译： 一种用于具有制动踏板和制动回路的车辆的系统。 该系统包括：主缸组件，其构造成响应于制动踏板的运动而加压其中的流体;传感器组件，被配置为产生指示制动踏板位置的踏板位置信号;电子控制单元，其被配置为（i） 响应于踏板位置信号的产生而产生制动请求信号，以及（ii）产生选择器控制信号，并且选择阀组件响应于选择器控制信号的产生而从第一模式移动到第二模式，主器件 气缸组件是（i）当选择阀组件位于第一模式时与制动回路的流体连通隔离，以及（ii）当选择阀组件位于第二模式时与制动回路流体连通。

公开(公告)号：US08523294B2

公开(公告)日：2013-09-03

申请号：US12763816

申请日：2010-04-20

申请人： Milan Klimes ,  Timothy J. Albert ,  Gregory P. Goodzey ,  Kevin Johnson ,  Kenneth S. Towers

发明人： Milan Klimes ,  Timothy J. Albert ,  Gregory P. Goodzey ,  Kevin Johnson ,  Kenneth S. Towers

IPC分类号： B60T8/42

CPC分类号： B60T7/20 ,  B60T7/042 ,  B60T8/4081 ,  B60T13/662 ,  B60T13/686

摘要： A system for use in a vehicle with a brake pedal and a brake circuit which includes a master cylinder assembly, a sensor assembly configured to generate a pedal position signal indicative of position of the brake pedal, an electronic control unit configured to (i) generate a brake request signal in response to generation of the pedal position signal, and (ii) generate a selector control signal, and a selector valve assembly operable in a first mode and a second mode, the selector valve assembly being moved from the first mode to the second mode in response to generation of the selector control signal, the master cylinder assembly is (i) isolated from fluid communication with the brake circuit when the selector valve assembly is positioned in the first mode, and (ii) in fluid communication with the brake circuit when the selector valve assembly is positioned in the second mode.

摘要翻译： 一种用于具有制动踏板和制动回路的车辆的系统，包括主缸组件，构造成产生指示制动踏板位置的踏板位置信号的传感器组件;电子控制单元，被配置为（i）产生 响应于所述踏板位置信号的产生而产生制动请求信号，以及（ii）产生选择器控制信号，以及可在第一模式和第二模式下操作的选择阀组件，所述选择阀组件从所述第一模式移动到 响应于选择器控制信号的产生的第二模式，主缸组件（i）当选择阀组件位于第一模式时与（1）与制动回路的流体连通隔离，并且（ii）与 当选择阀组件位于第二模式时，制动回路。

公开(公告)号：US5487598A

公开(公告)日：1996-01-30

申请号：US353861

申请日：1994-12-12

申请人： Robert M. Rivard ,  Michael J. Schneider ,  Tamas I. Pattantyus ,  Kenneth S. Towers ,  Jack R. Phipps

发明人： Robert M. Rivard ,  Michael J. Schneider ,  Tamas I. Pattantyus ,  Kenneth S. Towers ,  Jack R. Phipps

IPC分类号： B60T8/72 ,  B60T8/1763 ,  B60T8/44 ,  B60T8/66 ,  B60T8/32

CPC分类号： B60T8/17636 ,  B60T8/445 ,  Y10S303/04

摘要： Vehicle antilock braking systems having an operator controlled master cylinder (11) and a second source (55, 57) of pressurized hydraulic fluid for selectively supplying rebuild pressure after an antilock event are disclosed. The system is selectively operable in one of three braking modes, a normal braking mode (119) where braking force is proportional to an operator brake pedal pressure, an enhanced anti-skid braking mode (69) where braking force may be maintained at a maximum nonskid level, and a conventional anti-skid braking mode (71) where braking force follows a cyclic pattern of fluid pressure bleed and build. The system includes circuitry (17, 19, 35, 37, 93, 95) for determining the speed of each wheel and an arrangement (59) operable independently of any vehicle wheels for determining vehicle deceleration. This comparison normally invokes the enhanced anti-skid braking mode, wherein the system is continually searching for an optimum wheel speed reference (39) by determining (119) on which side of the peak of a mu-slip curve the vehicle is operating, for example, by calculating the sign of the slope of the mu-slip curve at the current vehicle operating point, and then incrementing (88) a prior wheel speed reference by a value (79) which changes the wheel speed reference toward the peak (75) of the mu-slip curve thereby calculating an updated wheel speed reference to control approximately the braking system. The enhanced anti-skid mode utilizes a pulse width modulated solenoid actuated two position valve (41, 43) operable in one position to provide a fluid flow path from the braking device, and in the other position to provide a fluid flow path from a second source to the braking device.

摘要翻译： 公开了具有操作员控制的主缸（11）和加压液压流体的第二源（55,57）的车辆防抱死制动系统，用于在防锁事件之后有选择地提供重建压力。 系统可选择性地在三种制动模式中的一种中工作，其中制动力与操作者制动踏板压力成比例的正常制动模式（119），增强的防滑制动模式（69），其中制动力可以保持在最大值 以及常规的防滑制动模式（71），其中制动力遵循流体压力流出和构建的循环模式。 该系统包括用于确定每个车轮的速度的电路（17,19,35,37,99,95）以及用于确定车辆减速度的任何车辆车轮独立操作的装置（59）。 该比较通常调用增强的防滑制动模式，其中系统通过确定（119）在车辆正在操作的微滑曲线的峰值的哪一侧来不断寻找最佳车轮速度参考（39），以便 例如，通过计算当前车辆操作点上的μ滑动曲线的斜率的符号，然后将先前的车轮速度参考值增加（88）一个将车轮速度基准改变为峰值（75）的值（79） ），从而计算更新的车轮速度基准以近似地控制制动系统。 增强的防滑模式使用脉冲​​宽度调制电磁致动的两位置阀（41,43），其可在一个位置操作以提供来自制动装置的流体流动路径，并且在另一位置提供来自第二位置的流体流动路径 来源于制动装置。