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公开(公告)号：US3727992A
公开(公告)日：1973-04-17
申请号：US3727992D
申请日：1971-03-15
Applicant: GEN MOTORS CORP
CPC classification number: B60T8/173 , B60T2210/14
Abstract: An anti-lock brake control system has a brake pressure modulator operated by a single solenoid controlled on-off valve which effects brake apply, brake release, and brake pressure hold modes. The hold mode is achieved by dithering the solenoid valve. An electronic circuit responsive to rotation of a braked wheel supplies signals to the solenoid valve to effect the various modes. The circuit includes a wheel speed recovery circuit for supplying to the valve during wheel recovery an operating signal for dithering the valve at a first level of wheel acceleration and for producing a brake apply signal above a higher value of wheel acceleration.
Abstract translation: 防抱死制动控制系统具有由单个电磁控制开关阀操作的制动压力调节器，其实现制动施加，制动释放和制动压力保持模式。 保持模式通过使电磁阀抖动来实现。 响应于制动轮的旋转的电子电路向电磁阀提供信号以实现各种模式。 该回路包括车轮速度恢复电路，用于在车轮回收期间向阀提供操作信号，该操作信号用于在第一级车轮加速度下使阀颤动，并产生高于车轮加速度的制动应用信号。
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公开(公告)号：US3715145A
公开(公告)日：1973-02-06
申请号：US3715145D
申请日：1971-09-30
Applicant: GEN MOTORS CORP
CPC classification number: B60T8/32
Abstract: The invention utilizes a wheel speed proportional pressure generated by a transmission governor and a vehicle ground speed pressure provided by a vehicle ground speed computer and provides a hydraulic anti-lock brake system including a fluid pressure operated wheel brake, an operator actuated master cylinder, a low speed cutout valve which communicates the master cylinder pressure directly to the wheel brake at vehicle speeds below some predetermined level, a control valve which modulates the governor pressure to provide a control pressure proportional to the amount by which master cylinder pressure exceeds the brake pressure and a clutch modulator which acts at vehicle speeds above the threshold of the low speed cutout valve to provide a brake pressure proportional to the control pressure. The transmission governor is modified to receive the vehicle ground speed pressure and apply a force proportional thereto to the governor valve spool so that during wheel slip the governor pressure is a function of both wheel speed and ground speed, or, in other words, a function of the magnitude of wheel slip.
Abstract translation: 本发明利用由变速调速器产生的车轮速度比例压力和由车辆地面速度计算机提供的车辆地面速度压力，并提供液压防抱死制动系统，其包括流体压力操作的轮式制动器，操作者致动的主缸， 低速切断阀，其以低于某一预定水平的车辆速度将主缸压力直接传递到车轮制动器;控制阀，其调节调速器压力以提供与主缸压力超过制动压力的量成比例的控制压力;以及 离合器调节器，其行驶速度高于低速切断阀的阈值，以提供与控制压力成比例的制动压力。 传动调速器被修改以接收车辆地面速度压力并且向调速阀阀芯施加与其成比例的力，使得在车轮打滑期间调速器压力是车轮速度和地面速度的函数，或者换句话说，功能 的车轮滑移的大小。
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公开(公告)号：US3720447A
公开(公告)日：1973-03-13
申请号：US3720447D
申请日：1971-09-30
Applicant: GEN MOTORS CORP
Inventor： HARNED J , JOHNSTON L
CPC classification number: B60T8/32
Abstract: The invention utilizes a wheel speed proportional pressure generated by a transmission governor or equivalent means and a vehicle ground speed pressure provided by a vehicle ground speed computer and provides a hydraulic anti-lock brake system including a fluid pressure operated wheel brake, an operator actuated master cylinder, a hydraulic actuator which determines the level of brake pressure at the wheel brake, a control valve which modulates the wheel speed pressure to provide a regulated pressure proportional to the amount by which the master cylinder pressure exceeds the brake pressure, and a servo valve which amplifies the regulated pressure to provide a control pressure which operates the hydraulic actuator. The servo valve also compares the regulated pressure with the vehicle ground speed pressure and varies the control pressure in response to the wheel slip condition so as to provide a nearly constant wheel slip.
Abstract translation: 本发明利用由变速调速器或等效装置产生的车轮速度比例压力和由车辆地面速度计算机提供的车辆地面速度压力，并提供液压防抱死制动系统，其包括流体压力操作的车轮制动器，操作者致动的主人 气缸，确定车轮制动器处的制动压力水平的液压致动器;调节轮速压力以提供与主缸压力超过制动压力的量成比例的调节压力的控制阀;以及伺服阀 其放大调节压力以提供操作液压致动器的控制压力。 伺服阀还将调节压力与车辆地面速度压力进行比较，并根据车轮滑动条件改变控制压力，以提供几乎恒定的车轮滑移。
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Patent Agency Ranking
公开(公告)号：US3718375A
公开(公告)日：1973-02-27
申请号：US3718375D
申请日：1971-09-30
Applicant: GEN MOTORS CORP
CPC classification number: B60T8/32
Abstract: A vehicle brake system includes a master cylinder, a regulating valve which modulates pump generated fluid pressure to provide a regulated pressure proportional to the master cylinder pressure, and a hydraulic actuator which provides a brake pressure proportional to the regulated pressure. The wheel slip condition is sensed by a transmission governor providing a wheel speed proportional pressure and a vehicle ground speed computer providing a vehicle ground speed proportional pressure. A control logic circuit including a hysteresis switching valve, a bypass valve, and a ball check valve functions to modify the regulated pressure in accordance with the difference between wheel speed pressure and vehicle ground speed pressure causing the hydraulic actuator to vary the wheel slip to continuously seek out the peak value of wheel-to-road friction coefficient.
Abstract translation: 车辆制动系统包括主缸，调节泵产生的流体压力以提供与主缸压力成比例的调节压力的调节阀，以及提供与调节压力成比例的制动压力的液压致动器。 轮滑条件由提供车轮速度比例压力的变速调速器和提供车辆地面速度比例压力的车辆地面速度计算机感测。 包括滞后切换阀，旁通阀和球止回阀的控制逻辑电路用于根据车轮速度压力和车辆地面速度压力之间的差异来改变调节压力，导致液压致动器使车轮滑动连续变化 找出车轮对路面摩擦系数的峰值。
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公开(公告)号：US3787094A
公开(公告)日：1974-01-22
申请号：US3787094D
申请日：1971-09-30
Applicant: GEN MOTORS CORP
Inventor： HARNED J , JOHNSTON L
CPC classification number: B60T8/4095 , B60T8/50
Abstract: A brake control system includes a pressure operated wheel brake, a master cylinder, a positive displacement pump drivingly connected to the wheel, a brake actuator providing a brake pressure to the wheel brake in proportion to the pump generated pressure, an orifice exhausting the pump generated pressure at a rate which prevents the pump generated pressure from operating the actuator throughout the range of vehicle speeds, and a slip control valve in series connection with the orifice and providing a variable restriction to exhaustion of the pump generated pressure in proportion to the difference between the master cylinder and wheel brake pressures. The flow area presented by the variable restriction of the slip control valve decreases at a decreasing rate as the differential between master and wheel brake pressures increases.
Abstract translation: 制动控制系统包括压力驱动的车轮制动器，主缸，驱动地连接到车轮的容积式泵，与泵产生的压力成比例地向车轮制动器提供制动压力的制动致动器;排出所产生的泵的孔 压力以防止泵产生的压力在车辆速度范围内操作致动器的速率，以及与孔口串联连接的滑动控制阀，并且提供与泵的产生压力成比例的可变限制， 主缸和车轮制动压力。 随着主制动压力和车轮制动压力之间的差值的增加，滑差控制阀的可变限制所呈现的流动面积以减小的速度减小。
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公开(公告)号：US3718377A
公开(公告)日：1973-02-27
申请号：US3718377D
申请日：1971-09-30
Applicant: GEN MOTORS CORP
Inventor： HARNED J , JOHNSTON L
CPC classification number: B60T8/32
Abstract: A vehicle ground speed computer provides a hydraulic pressure signal proportional to the vehicle speed relative to the ground and includes a transmission governor or equivalent means providing a source of hydraulic pressure proportional to the vehicle wheel speed, an accumulator which is charged by the wheel speed pressure source, a flow responsive valve which isolates the accumulator from the wheel speed pressure source whenever the flow therethrough from the accumulator to the wheel speed pressure source is indicative of a wheel deceleration rate in excess of a predetermined value, and a decelerometer actuated valve which exhausts pressure from the accumulator in proportion to the vehicle linear deceleration whereby the pressure remaining in the accumulator is proportional to the vehicle ground speed irrespective of wheel slip caused by excessive braking.
Abstract translation: 车辆地面速度计算机提供与车辆速度相对于地面成比例的液压信号，并且包括传动调速器或等效装置，其提供与车轮速度成比例的液压源，蓄能器由车轮速度压力 源，流量响应阀，其每当从蓄能器到轮速压力源的流量表示超过预定值的车轮减速度时，将蓄能器与车轮速度压力源隔离，并且减速计驱动阀排出 来自蓄能器的压力与车辆线性减速成比例，由此蓄积器中的压力与车辆地面速度成比例，而与由过度制动引起的车轮滑动无关。
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公开(公告)号：US3718376A
公开(公告)日：1973-02-27
申请号：US3718376D
申请日：1971-10-01
Applicant: GEN MOTORS CORP
CPC classification number: B60T8/4225 , B60T8/32
Abstract: An all hydraulic anti-lock brake control system includes an operator actuated master cylinder fluidly connected to a wheel brake, a brake pressure modulator interposed fluidly intermediate the master cylinder and wheel brake, a transmission governor providing a fluid pressure proportional to the wheel speed, vehicle ground speed computer providing a fluid pressure proportional to the vehicle linear speed and valve means providing a control pressure for operation of the brake pressure modulator as a function of the difference existing between wheel speed pressure and vehicle ground speed pressure. In the first embodiment of the invention a servo control valve varies the control pressure as a function of the difference between the wheel speed pressure and the vehicle ground speed pressure so as to maintain a substantially constant wheel slip at a high value of wheel-to-road friction coefficient. The second and third embodiments vary the control pressure so as to continuously seek out the peak value of wheel-to-road friction coefficient and thereby maintain a high average coefficient. The second embodiment includes a hysteresis switching valve in combination with the servo control valve while the third embodiment employs a hysteresis switching valve.
Abstract translation: 全液压防抱死制动控制系统包括流体连接到车轮制动器的操作者致动的主缸，在主缸和车轮制动器之间流体流动的制动压力调节器，提供与车轮速度成比例的流体压力的变速调速器 提供与车辆直线速度成比例的流体压力的地面速度计算机和根据车轮速度压力和车辆地面速度压力之间的差异的函数提供用于操作制动压力调节器的控制压力的阀装置。 在本发明的第一实施例中，伺服控制阀根据车轮速度压力和车辆地面速度压力之间的差异来改变控制压力，以便将车轮滑移保持在高的车轮 - 道路摩擦系数。 第二和第三实施例改变控制压力，以便连续寻找车轮对路面摩擦系数的峰值，从而保持较高的平均系数。 第二实施例包括与伺服控制阀组合的滞后切换阀，而第三实施例采用滞后切换阀。
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公开(公告)号：US3717384A
公开(公告)日：1973-02-20
申请号：US3717384D
申请日：1971-03-15
Applicant: GEN MOTORS CORP
Inventor： HARNED J
IPC: B60T8/1761 , B60T8/70 , B60T8/12
CPC classification number: B60T8/17613 , B60T2210/14
Abstract: An electronic control for an anti-lock brake control system provides different deceleration threshold reference signal levels for high and low coefficient surfaces. A coefficient select circuit is responsive to wheel acceleration during the period of wheel speed recovery in an anti-lock cycle and selects for use during the subsequent cycle one of the threshold values in accordance with the degree of wheel acceleration. Another circuit senses wheel hop during braking to further increase the threshold during wheel hop to desensitize the control to undesirable transients.
Abstract translation: 用于防抱死制动控制系统的电子控制为高和低系数表面提供不同的减速阈值参考信号电平。 系数选择电路响应于在反锁定循环中的车轮速度恢复期间的车轮加速度，并根据车轮加速度选择在随后的循环中使用一个阈值。 在制动期间，另一回路感测到车轮跳跃，以进一步增加车轮跳跃期间的阈值，以使控制脱敏以达到不期望的瞬变。
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