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    • 4. 发明授权
    • Slip-controlled brake system for all-wheel driven automotive vehicle
    • 用于全轮驱动的汽车的滑动制动系统
    • US4746173A
    • 1988-05-24
    • US914341
    • 1986-10-02
    • Helmut FennelHans WupperGunther BuschmannNorber Ehmer
    • Helmut FennelHans WupperGunther BuschmannNorber Ehmer
    • B60T8/172B60T8/1763B60T8/1769B60T8/32B60T8/58B60T8/66B60T8/26
    • B60T8/58B60T8/1769B60T8/322Y10S303/06
    • A slip-controlled hydraulic brake system for all-wheel driven motor vehicles equipped with lockable differentials (2, 3) is provided with sensors (S.sub.1 -S.sub.4, 33-36) for measuring the rotational behavior of the wheels. Electronic circuits (44) are provided for logic combining and processing the sensor signals, and for generating braking pressure control signals by way of which the brake pressure in the individual wheel brakes (16-19) is variable in response to the rotational behavior of the wheels and to a reference variable. To compensate the increased moments of inertia as a result of the moments transmission, by way of the lockable differentials (2, 3) in this brake system the brake pressure in the rear-wheel brakes (18, 19), can be modulated at a lower control frequency as compared with the brake pressure in the front-wheel brakes (16, 17). The reduction in the control frequency of the rear-wheel brake pressure is determined by driving-dynamic criteria, for example, by the average motor vehicle deceleration or by the motor vehicle speed.
    • 配备有可锁定差速器(2,3)的全轮驱动机动车辆的滑动控制液压制动系统设有用于测量车轮旋转行为的传感器(S1-S4,33-36)。 提供电子电路(44)用于逻辑组合和处理传感器信号,并且用于产生制动压力控制信号,通过该制动压力控制信号,单个车轮制动器(16-19)中的制动压力可响应于 车轮和参考变量。 为了通过扭矩传递来补偿增加的惯性矩,通过该制动系统中的可锁定差速器(2,3),后轮制动器(18,19)中的制动压力可以在 与前轮制动器(16,17)中的制动压力相比较低的控制频率。 后轮制动器压力的控制频率的降低由驾驶动力学标准确定,例如通过机动车辆的平均减速度或机动车辆速度来确定。
    • 5. 发明授权
    • Circuit configuration for controlling the braking pressure of a
slip-controlled brake system for all-wheel driven automotive vehicles
    • 用于控制用于全轮驱动的机动车辆的滑动控制制动系统的制动压力的电路配置
    • US4736994A
    • 1988-04-12
    • US914647
    • 1986-10-02
    • Helmut FennelHans WupperGunther BuschmannNorbert Ehmer
    • Helmut FennelHans WupperGunther BuschmannNorbert Ehmer
    • B60T8/172B60T8/1761B60T8/1763B60T8/1769B60T8/32B60T8/58B60T8/66B60T8/72
    • B60T8/58B60T8/17616B60T8/1769B60T8/322B60T2250/04
    • To control the braking pressure in the wheel brakes of a slip-controlled hydraulic brake system for automotive vehicles with all-wheel drive and with lockable or automatically locking differentials (2, 3), a circuit configuration is provided which influences the variation of the vehicle reference speed (v.sub.REF). This is to say, in the event of the wheel (v.sub.Rn) which is momentarily decisive for the formation of references becoming instable, the reference speed (v.sub.REF) will first be declined with a relatively flat gradient which corresponds to a vehicle deceleration at a low frictional coefficient. A decrease of the vehicle reference speed (v.sub.REF) with a very steep gradient will follow after a predetermined period of time (T.sub.1). This decrease is continued until the vehicle reference speed (v.sub.REF) reaches the decisive wheel speed again or falls thereunder. To avoid oscillations, the change-over of the reference (v.sub.REF) after the attainment of the wheel speed curves (v.sub.Rn) will not be effected until after a predetermined time of delay (T.sub.2 or T.sub.3).
    • 为了控制具有全轮驱动和可锁定或自动锁定差速器(2,3)的机动车辆的滑动控制液压制动系统的车轮制动器中的制动压力,提供了影响车辆变化的电路配置 参考速度(vREF)。 也就是说,如果轮对(vRn)对于形成基准变得不稳定而暂时具有决定性,则参考速度(vREF)首先将以相对平缓的梯度下降,这对应于低速下的车辆减速度 摩擦系数。 在预定时间段(T1)之后,将跟随具有非常陡梯度的车辆基准速度(vREF)的减小。 直到车辆参考速度(vREF)再次达到决定性车轮速度或下降为止,才会持续下降。 为了避免振荡,在达到车轮速度曲线(vRn)之后,直到经过预定的延迟时间(T2或T3)之后才会进行参考(vREF)的转换。
    • 6. 发明授权
    • Circuit configuration for a brake system having an anti-lock control
    • 具有防抱死控制的制动系统的电路配置
    • US5265947A
    • 1993-11-30
    • US730936
    • 1991-07-30
    • Hans WupperHelmut FennelGunther BuschmannIvica BatisticNorbert EhmerRobert Schmidt
    • Hans WupperHelmut FennelGunther BuschmannIvica BatisticNorbert EhmerRobert Schmidt
    • B60T8/58B60T8/174B60T8/1761B60T8/64B60T8/00
    • B60T8/17616Y10S303/04
    • The circuit configuration for a brake system having an anti-locking control generates pulse-type brake pressure control signals. For pressure rebuild-up after a pressure decrease, brake pressure is applied first at a steep and subsequently at a flatter gradient, this being achieved by a variable pulse (P1) and by short fixed pulses (P2) succeeding one another at a large interval. Circuits are provided rendering dependent the pulse and pulse break times (T.sub.1, T.sub.2, T.sub.k) determining the pressure build-upon the duration of the pressure build-up (T.sub.1) during the steep-rise build-up in the preceding cycle,on the duration (T.sub.1 +nT.sub.2) of the entire pressure build-up in the preceding cycle, andon the duration (T.sub.o) of the preceding pressure decrease, with the pulse times being so dimensionedthat, at a constant coefficient of friction and at a constant static pressure, the locking limit of the wheel is rereached after a predetermined period of time or after a predetermined pulse number. The duration of the variable and of the fixed pressure build-up pulses is computed from the pressure build-up of the preceding pressure or determined from a stored Table.
    • PCT No.PCT / EP90 / 00046 Sec。 371日期1991年7月30日 102(e)1991年7月30日PCT PCT 1990年1月10日PCT公布。 WO90 / 08681 PCT出版物 1990年8月9日。具有防抱死控制的制动系统的电路结构产生脉冲式制动压力控制信号。 对于压力降低后的压力重建,制动压力首先以陡峭的方式施加,然后以较平坦的梯度施加,这是通过可变的脉冲(P1)和短的固定脉冲(P2)以大的间隔彼此相继地实现的 。 电路提供依赖于脉冲和脉冲中断时间(T1,T2,Tk),确定在前一周期陡峭崛起期间压力累积(T1)持续时间内的压力增加, 在前一循环中的整个压力累积的持续时间(T1 + nT2)以及先前压力的持续时间(To)减小,脉冲时间被确定为在恒定的摩擦系数和 恒定的静压力,在预定的时间段之后或者在预定的脉冲数之后重新开始车轮的锁定极限。 变量和固定压力累积脉冲的持续时间是根据先前压力的压力积分计算的,或者由存储的表确定。
    • 10. 发明授权
    • Hydraulic brake system with slip control
    • 具有滑差控制的液压制动系统
    • US4634190A
    • 1987-01-06
    • US828571
    • 1986-02-10
    • Hans Wupper
    • Hans Wupper
    • B60T8/44B60T8/1761B60T8/1766B60T8/48B60T8/50B60T13/14B60T8/32B60T13/12
    • B60T8/5031B60T13/146Y10S303/90
    • A hydraulic brake system with slip control for motor vehicles is provided. The system includes a master cylinder with a hydraulic brake booster arranged in front of the master cylinder. There is at least one static brake circuit connected to the master cylinder and a dynamic brake circuit connected to the pressure chamber of the hydraulic booster. Valves are connected in the brake circuits for the control of the wheel cylinder pressures during slip control. A gasket at the master cylinder piston acts as check valve via which pressure medium may be supplied from the dynamic brake circuit into the static brake circuit by pressurization of the pedal-close front face of the master cylinder piston. The pedal-close front face of the master cylinder piston may be alternatively connected to the dynamic brake circuit or to an unpressurized return reservoir by an electromagnetic switch-over valve. A pressure dependent throttle valve provides passage between the booster pressure chamber and the dynamic brake circuit or a throttle between the booster pressure chamber and the dynamic brake circuit. In this way, there will be a reduction of the pressure gradient of the stage of pressure build-up during control, without the pressure gradient in the initial stage of braking being influenced. In this way, there will be a reduction of the pressure gradient of the stage of pressure build-up during control, without the pressure gradient in the initial stage of braking being influenced.
    • 提供了一种具有机动车辆滑动控制的液压制动系统。 该系统包括具有设置在主缸前面的液压制动助力器的主缸。 至少有一个静态制动回路连接到主缸,以及连接到液压助力器的压力室的动态制动回路。 阀门连接在制动回路中,用于在滑差控制期间控制轮缸压力。 主缸活塞上的垫圈用作止回阀,压力介质可以通过主动缸活塞的踏板关闭前表面的加压从动态制动回路供给静态制动回路。 主缸活塞的踏板关闭前面可以通过电磁开关阀替代地连接到动态制动回路或非压缩回油储存器。 压力依赖节流阀提供增压压力室和动态制动回路之间的通道或助力器压力室与动态制动回路之间的节气门。 以这种方式,在控制期间压力增加阶段的压力梯度将降低,而在制动初始阶段的压力梯度受到影响。 以这种方式,在控制期间压力增加阶段的压力梯度将降低,而在制动初始阶段的压力梯度受到影响。