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公开(公告)号：US5056354A
公开(公告)日：1991-10-15
申请号：US563158
申请日：1990-08-06
申请人： Kazutaka Kuwana , Kuniaki Okamoto , Tsuyoshi Yoshida , Hiroyuki Ichikawa , Masaru Kamikado , Nobuyasu Nakanishi , Tatsuo Sugitani , Kazunori Sakai
发明人： Kazutaka Kuwana , Kuniaki Okamoto , Tsuyoshi Yoshida , Hiroyuki Ichikawa , Masaru Kamikado , Nobuyasu Nakanishi , Tatsuo Sugitani , Kazunori Sakai
IPC分类号： B60G17/00 , B60G17/018 , B60G23/00 , B60T8/00 , B60T8/172 , B60T8/173 , B60T8/1763 , B60T8/1764 , B60T8/58 , B60W10/00 , B60W10/18 , B60W10/188 , B60W10/22 , G01N19/02 , G01P1/12
CPC分类号： B60T8/1764 , G01N19/02 , G01P1/127
摘要： The invention is directed to an arrangement for monitoring a road condition which determines the coefficient of friction of the road surface on the basis of a signal corresponding to an acceleration of a vehicle detected by an acceleration sensor. The signal is converted into one of at least two predetermined values by conversion means in response to a magnitude of the acceleration every cycle of a predetermined time period. The converted value is summed up by summing means by a predetermined number of consecutive cycles to provide a total value in the last cycle thereof which is stored in memory means. Then, in determination means, one of at least two standard values is selected in response to the condition of increase or decrease of the total value in the present cycle provided by the summing means as compared with the total value in the previous cycle stored in the memory means. And, the total value in the present cycle is compared with the above one of at least two standard values to produce a road condition signal corresponding to a result of comparison which represents the coefficient of friction of the road surface. The present system is applicable to an anti-skid control system for an automotive vehicle.
摘要翻译： 本发明涉及一种用于监测道路状况的装置，其根据与由加速度传感器检测到的车辆的加速度相对应的信号确定路面的摩擦系数。 响应于每个预定时间周期的加速度的大小，转换装置将信号转换成至少两个预定值中的一个。 转换后的值通过加法装置相加预定数量的连续周期，以提供其存储在存储装置中的最后周期中的总值。 然后，在确定装置中，响应于由求和装置提供的当前周期中的总值的增加或减少的条件与至少两个标准值中的至少两个标准值中的一个相比，存储在 记忆手段 并且，将本周期中的总值与至少两个标准值中的上述值进行比较，以产生对应于表示路面的摩擦系数的比较结果的道路状况信号。 本系统适用于机动车辆的防滑控制系统。
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公开(公告)号：US5046787A
公开(公告)日：1991-09-10
申请号：US563143
申请日：1990-08-06
申请人： Kazutaka Kuwana , Kuniaki Okamoto , Tsuyoshi Yoshida , Hiroyuki Ichikawa , Masaru Kamikado , Nobuyasu Nakanishi , Tatsuo Sugitani , Kazunori Sakai
发明人： Kazutaka Kuwana , Kuniaki Okamoto , Tsuyoshi Yoshida , Hiroyuki Ichikawa , Masaru Kamikado , Nobuyasu Nakanishi , Tatsuo Sugitani , Kazunori Sakai
CPC分类号： B60T8/172
摘要： The anti-skid control system is provided with wheel velocity sensors only for the driving wheels and is capable of performing the anti-skid control through its accurate estimation of the vehicle speed and proper compensatory control even when sharp braking occurs immediately upon the release of the accelerator after the occurrence of acceleration slip. The anti-skid control system is capable of starting the anti-skid control with certainty even when the braking operation is not detected because of a failure in the operation of the brake switch. The system is provided with a fluid pressure generating device, a fluid pressure controlling device, a brake operation detecting device, an acceleration detecting device, a wheel velocity detecting device, a braking force controlling device, a first estimated vehicle speed setting device and a second estimated vehicle speed setting device.
摘要翻译： 防滑控制系统仅提供用于驱动轮的车轮速度传感器，并且能够通过其对车速的准确估计和适当的补偿控制来执行防滑控制，即使在释放后立即发生急剧制动时 加速器发生加速滑动后。 即使由于制动开关的操作失败而没有检测到制动操作，防滑控制系统也能够确定地启动防滑控制。 该系统设置有流体压力生成装置，流体压力控制装置，制动操作检测装置，加速度检测装置，车轮速度检测装置，制动力控制装置，第一推定车速设定装置和第二 估计车速设定装置。
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公开(公告)号：US4842344A
公开(公告)日：1989-06-27
申请号：US100447
申请日：1987-09-24
CPC分类号： B60T8/5037 , B60T8/4275
摘要： An antiskid apparatus including a changeover valve disposed in a line connecting a master cylinder and a wheel brake, the changeover valve being changed over between a first mode for cutting off the wheel brake from the master cylinder and connecting the wheel brake to a reservoir, and a second mode for alternately connecting the wheel brake to a pump and the reservoir when an antiskid operation is performed, a pressure increase control valve connected between the pump and changeover valve with wheel brake pressure serving as a control signal pressure, and a pressure decrease control valve connected between the wheel brake and reservoir with wheel brake pressure serving as a control signal pressure. The pressure increase control valve decreases an amount of pressurized oil flow from the pump to the wheel brake when wheel brake pressure decreases and increases the amount of pressurized oil flow from the pump when wheel brake pressure increases. The pressure decrease control valve increases an amount of pressurized oil flow from the wheel brake to the reservoir when wheel brake pressure decreases and decreases the amount of pressurized oil flow from the wheel brake when wheel brake pressure increases. The pressure increase and decrease control valves are formed integral.
摘要翻译： 一种防滑装置，包括设置在连接主缸和车轮制动器的线中的切换阀，切换阀在从主缸切断车轮制动器的第一模式和将车轮制动器连接到储存器之间切换，以及 用于在进行防滑操作时将车轮制动器交替地连接到泵和储存器的第二模式，连接在泵和切换阀之间的增压控制阀，其中车轮制动压力用作控制信号压力，以及减压控制 连接在车轮制动器和油箱之间的阀门用作制动压力作为控制信号压力。 当车轮制动压力降低时，增压控制阀减少从泵到车轮制动器的加压油流量，并且当车轮制动器压力增加时增加来自泵的加压油流量。 当车轮制动压力降低时，减压控制阀增加从车轮制动器到储油器的加压油流量，并且当车轮制动器压力增加时减小来自车轮制动器的加压油流量。 压力增减控制阀形成一体。
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公开(公告)号：US4838621A
公开(公告)日：1989-06-13
申请号：US160339
申请日：1988-02-25
CPC分类号： B60T8/346 , B60T8/328 , B60T8/4225 , B60T8/441 , B60T8/447
摘要： An anti-skid apparatus for installation in a vehicle braking system having a regulator valve for producing a hydraulic power pressure in accordance with a hydraulic braking pressure from a master cylinder. A control cylinder is disposed in a hydraulic circuit connecting the master cylinder to a wheel brake cylinder, and comprises a cylinder body having a cylinder bore defined therein and a piston axially slidably disposed within the cylinder bore. This piston forms at its one end a pressure chamber communicating with the wheel brake cylinder, and is applied at its the other end with the hydraulic power pressure from the regulator. Disposed in the control cylinder is a normally open cut-off valve which normally permits the flow of the hydraulic braking pressure from the master cylinder into the pressure chamber and blocks the flow of the hydraulic braking pressure when the piston moves to an extent more than a predetermined distance from its initial position for decreasing the volume of the pressure chamber. And, a changeover valve is disposed between the regulator valve and the control cylinder, and applies the hydraulic power pressure to the piston or discharges it from the control cylinder.
摘要翻译： 一种用于安装在车辆制动系统中的防滑装置，具有用于根据来自主缸的液压制动压力产生液压动力压力的调节阀。 控制缸设置在将主缸连接到车轮制动缸的液压回路中，并且包括具有限定在其中的缸孔的缸体和可轴向滑动地设置在缸孔内的活塞。 该活塞在其一端形成与车轮制动缸连通的压力室，并且在其另一端处施加来自调节器的液压动力压力。 在控制气缸中设置的是常开截止阀，其通常允许从主缸的液压制动压力流入压力室，并且当活塞移动到大于等于的程度时阻止液压制动压力的流动 与其初始位置预定的距离，用于减小压力室的体积。 并且，在调节阀和控制缸之间设置有切换阀，并且将液压动力压力施加到活塞或者从控制缸排出。
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公开(公告)号：US4800289A
公开(公告)日：1989-01-24
申请号：US4707
申请日：1987-01-20
申请人： Yoshiharu Adachi , Takumi Nishimura , Hiroaki Takeuchi , Noboru Noguchi , Nobuyasu Nakanishi , Hiromu Kuromitsu
发明人： Yoshiharu Adachi , Takumi Nishimura , Hiroaki Takeuchi , Noboru Noguchi , Nobuyasu Nakanishi , Hiromu Kuromitsu
CPC分类号： B60T8/445 , Y10S303/90
摘要： An anti-skid apparatus for installation in a vehicle braking system between a master cylinder and a wheel brake cylinder. The anti-skid apparatus includes a hydraulic power pressure source connected to a fluid reservoir of the master cylinder to produce a hydraulic power pressure higher than a braking pressure applied to the wheel brake cylinder from the master cylinder, a regulator valve connected to the pressure source to control the power pressure in dependence upon a hydraulic pressure created in the master cylinder in braking operation, a first switchover valve disposed within a braking circuit connecting the master cylinder to the wheel brake cylinder and being arranged to be intermittently activated when a road wheel tends to be locked, the first switchover valve being connected to the reservoir to connect the wheel brake cylinder to the reservoir in its activated condition, a second switchover valve disposed within the braking circuit between the master cylinder and the first switchover valve and being arranged to be activated when the road wheel tends to be locked, a second switchover valve being connected to the regulator valve to interrupt the flow of pressurized fluid from the master cylinder and permit the flow of pressurized fluid from the regulator valve to the wheel brake cylinder through the first switchover valve.
摘要翻译： 一种用于安装在主缸和车轮制动缸之间的车辆制动系统中的防滑装置。 防滑装置包括连接到主缸的流体储存器的液压动力源，以产生高于从主缸施加到车轮制动液压缸的制动压力的液压动力压力;连接到压力源的调节阀 根据在制动操作中的主缸中产生的液压来控制功率压力;第一切换阀，设置在将主缸连接到车轮制动缸的制动回路中，并且布置成当车轮趋于 被锁定，第一切换阀连接到储存器，以将轮制动缸连接到储存器处于其启动状态;第二切换阀，设置在主缸和第一切换阀之间的制动回路内，并被布置为 当车轮倾向于被锁定时被激活，第二切换阀是 连接到调节阀以中断来自主缸的加压流体的流动，并允许通过第一切换阀将加压流体从调节阀流动到车轮制动缸。
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公开(公告)号：US4799048A
公开(公告)日：1989-01-17
申请号：US60959
申请日：1987-06-10
申请人： Takahiro Goshima , Yoshiyuki Hattori , Hiroji Kinbara , Hiromi Otsuki , Yoshihisa Nomura , Nobuyasu Nakanishi
发明人： Takahiro Goshima , Yoshiyuki Hattori , Hiroji Kinbara , Hiromi Otsuki , Yoshihisa Nomura , Nobuyasu Nakanishi
CPC分类号： F15B1/24 , F15B1/04 , B60T8/4068 , F15B2201/21 , F15B2201/312 , F15B2201/411 , F15B2201/515
摘要： An accumulator has a piston axially slidably disposed in a cylinder mounted in a casing, the cylinder and the piston jointly defining a reservoir communicating with an inlet/outlet port in the casing. A piston rod axially movably disposed in the casing has an end slidably fitted in the cylindrical hole of the piston. The piston rod is normally urged by a spring to force the piston into the reservoir. The accumulator also includes a switch mechanism for detecting the position of the piston in the cylinder. The switch mechanism may comprise a reed switch, a light-sensitive switch, a pressure-sensitive switch, or a pushbutton switch.
摘要翻译： 蓄能器具有轴向可滑动地设置在安装在壳体中的气缸中的活塞，气缸和活塞联合地限定与壳体中的入口/出口连通的储存器。 轴向可移动地设置在壳体中的活塞杆具有可滑动地装配在活塞的圆柱形孔中的端部。 活塞杆通常由弹簧推动以迫使活塞进入储存器。 蓄能器还包括用于检测活塞在气缸中的位置的开关机构。 开关机构可以包括舌簧开关，感光开关，压敏开关或按钮开关。
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公开(公告)号：US4720152A
公开(公告)日：1988-01-19
申请号：US881700
申请日：1986-07-03
CPC分类号： B60T8/4225 , B60T8/38 , B60T8/44 , Y10S303/90
摘要： An anti-skid device for motor vehicles provided with a hydraulic circuit for connecting the brake master cylinder with the wheelbrake cylinder has a valve dividing the hydraulic circuit into a brake master cylinder side section and a wheelbrake cylinder side circuit section, the two circuit sections being arranged so as to act against each other. Two floating pistons make slidable reciprocating movement respectively according to the pressure difference between the two hydraulic circuit sections and the spring force. The anti-skid device causes the brake pedal to generate a vibration of adequate degree at the time of anti-skid operation in any road condition so that the drive can recognize the actuation of anti-skid.
摘要翻译： 一种用于机动车辆的防滑装置，其具有用于将制动主缸与轮刹车缸连接的液压回路，具有将液压回路分为制动主缸侧部和车轮制动缸侧回路部的阀，所述两个回路部为 安排为相互作用。 两个浮动活塞根据两个液压回路段之间的压差和弹簧力分别进行滑动往复运动。 防滑装置使得制动踏板在任何道路状况下在防滑操作时产生足够程度的振动，使得驱动器能够识别防滑动作。
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公开(公告)号：US4846535A
公开(公告)日：1989-07-11
申请号：US100459
申请日：1987-09-24
CPC分类号： B60T8/4291 , B60T8/5037
摘要： An antiskid apparatus for an automotive vehicle including a cut-off valve having an inlet side to which a master cylinder is connected and an outlet side to which a wheel cylinder is connected for cutting off a supply of pressurized oil from the master cylinder to the wheel cylinder when an antiskid operation is performed, and a pump connected between the cut-off valve and wheel cylinder for supplying pressurized oil to the wheel cylinder when an antiskid operation is performed. The master cylinder and wheel cylinder being brought into slight communication via a microgroove in the spool of the cut-off valve when the spool is at a closed position. Pedal shock at antiskid operation is alleviated.
摘要翻译： 一种用于机动车辆的防滑装置，包括具有连接主缸的入口侧的截止阀和连接有轮缸的出口侧，用于切断从主缸向车轮供应的加压油 当执行防滑操作时，连接在截止阀和轮缸之间的泵，用于在执行防滑操作时将加压油供应到轮缸。 当阀芯处于关闭位置时，主缸和轮缸通过截止阀的阀芯中的微槽略微连通。 防滑操作的脚踏休克得到缓解。
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公开(公告)号：US4834468A
公开(公告)日：1989-05-30
申请号：US99728
申请日：1987-09-22
CPC分类号： B60T8/4291
摘要： The present invention relates an antiskid apparatus for an automotive vehicle. The apparatus includes a cut-off valve which is connected between a master cylinder and a wheel cylinder and provides communication therebetween in response to wheel cylinder pressure and cuts off pressurized hydraulic fluid from the master cylinder when an antiskid operation is performed by the control system. A solenoid valve is positioned in a conduit which connects the wheel cylinder to the cut-off valve. The solenoid valve is also connected to a discharge side of a pump which circulates pressurized oil. When the solenoid is in a normal position, the wheel cylinder is connected to the cut-off valve in the discharge side of the pump. When changed over from the normal position, the solenoid valve disconnects the wheel cylinder from the cut-off valve and the discharge side of the pump and connects the wheel cylinder to a reservoir connected to an intake side of the pump.
摘要翻译： 本发明涉及一种用于机动车辆的防滑装置。 该装置包括连接在主缸和轮缸之间的截止阀，并且当由控制系统执行防滑操作时，响应于轮缸压力提供连通，并且在主缸中切断加压液压流体。 电磁阀位于将轮缸连接到截止阀的导管中。 电磁阀也连接到循环加压油的泵的排放侧。 当螺线管处于正常位置时，轮缸连接到泵的排放侧的截止阀。 当从正常位置切换时，电磁阀将轮缸与截止阀和泵的排出侧分离，并将轮缸连接到连接到泵的进气侧的储存器。
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公开(公告)号：US4624508A
公开(公告)日：1986-11-25
申请号：US637719
申请日：1984-08-06
申请人： Yoshiharu Adachi , Asao Kozakai , Shingo Watanabe , Nobuyasu Nakanishi , Hiroyuki Oka , Fumio Nakagawa
发明人： Yoshiharu Adachi , Asao Kozakai , Shingo Watanabe , Nobuyasu Nakanishi , Hiroyuki Oka , Fumio Nakagawa
CPC分类号： B60T8/341 , B60T8/328 , B60T8/4054 , B60T8/4225
摘要： A regulator valve for a hydraulic anti-skid apparatus and which includes a housing provided with a first inlet port for connection to a fluid pump and the anti-skid apparatus, a second inlet port for connection to a master cylinder, and an outlet port for connection to a fluid reservoir, a regulator piston reciprocably disposed within the housing to form a first fluid chamber in open communication with the first inlet and outlet ports and a second fluid chamber in open communication with the second inlet port, and a spring loaded annular valve seat member arranged within the first fluid chamber to cooperate with a valve part of the piston so as to control the fluid flow from the first inlet port to the outlet port in response to the difference in pressure between the fluid chambers. A support member is arranged within the first fluid chamber formed therein with an axial bore in which a large diameter portion of the piston is slidably disposed to form a third annular fluid chamber. The support member is further formed with an orifice for effecting the fluid flow between the first and third fluid chambers in response to axial movement of the piston.
摘要翻译： 一种用于液压防滑装置的调节阀，其包括壳体，其具有用于连接到流体泵的第一入口端口和防滑装置，用于连接到主缸的第二入口端口和用于 连接到流体储存器，调节器活塞可往复地设置在壳体内以形成与第一入口和出口开口连通的第一流体室和与第二入口端开口连通的第二流体室，以及弹簧加载的环形阀 座部件布置在第一流体室内以与活塞的阀部分配合，以响应于流体室之间的压力差来控制从第一入口到出口的流体流动。 支撑构件布置在其中形成有第一流体室中的轴向孔中，活塞的大直径部分可滑动地布置在其中，以形成第三环形流体室。 支撑构件还形成有孔，用于响应于活塞的轴向运动而实现第一和第三流体室之间的流体流动。
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