• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A hydro-dynamic brake system of the type having a volumetric pump circulating brake fluid to a reservoir, and a modulating valve in the output of the pump acting under the control of the brake pedal to constrict the pipeline thereby increasing the pressure at the output of the pump. This pressure is fed to a distributor controlled by a solenoid valve and also receiving an input directly from a master cylinder which is also controlled by the brake pedal. Each wheel has a speed sensor feeding a processing and control circuit which produces an output signal to a solenoid valve which controls various transfer ports of the distributor. The distributor has a series of cylindrical cavities housing pistons which control valves in passages linking the chambers into which each cavity is separated by its piston. These pistons control the flow of brake fluid to the brake actuators so that upon skidding the brakes are released in a rapid but controlled manner, and likewise reapplication of the brakes after skidding is progressive so that there is no "snatching" which might lead to a loss of control.
    公开号:SU858553A3
    申请号:SU762417008
    申请日:1976-11-05
    公开日:1981-08-23
    发明作者:Бертоне Антонио；Риветти Энрико；Каттанео Маурицио
    申请人:Фиат Сочиета Пер Ациони (Фирма)；
    IPC主号:
    专利说明:

    the rum is equipped with a second valve ball, the fourth channel, which communicates the rod cavity of the third chamber with the first outlet hole and the fifth channel connecting the shock chamber of the third chamber with the first inlet hole made coaxially with the third valve stem; and connected to the second inlet, the hydrolines, connecting the rodless cavity of the first chamber with the solenoid valve, are equipped with a regulating device, made in the form of o in a separate chamber of the valve with a rod dividing the indicated camera into rodless and rod end cavities, the first of which are connected to the rodless cavity of the first chamber, and through a ball valve in contact with the rod of the valve, to an electromagnetic valve a channel with a throttle and a channel separated by a check valve from the rodless chamber of the spool chamber, having a radial outlet to the bore communicated with the solenoid valve.
    FIG. 1 schematically depicts the brake system of a car with a hydraulic distribution unit; on FI1. 2 — An embodiment of the distribution node; in fig. 3 is a plot of change in brake pressure P over time T.
    Hydraulic distribution units 1 are installed in the brake system of the car {Fig. 1) having wheels 2, wherein the brake system includes reservoir 3 connected via pump 4 to brake master cylinder 5 operated by a pedal b.
    The cylinder 5 is connected to the nodes 1 by means of the tubes 7. The nodes 1 include solenoid valves 8, Each node 1 has a first outlet 9, connected by the brake tube 10 to the working brake cylinders 11 of the wheels 2 of the front or rear axle, respectively, and the first inlet the opening 12 serves to connect to the master cylinder 5, the second inlet 13 is connected by a tube 14 connected to a line connecting the pump 4 to the modulating valve 15 communicated with the reservoir 3 via the tube 16.
    The modulating valve 15 is connected to the brake pedal b by means of a mechanical lever (shown on the drawing lines) and limits the flow of fluid between the outlet of the pump 4 and the reservoir 3 depending on the force applied to the brake pedal 6, thereby increasing the pressure in tube 14, proportional to the pressure on the brake pedal. Each node 1 also has a second outlet 17, which is connected via tube 18 to reservoir 3,
    A wheel 19 is connected to each wheel 2 to determine the wheel speed. At the same time, the outputs of the sensors 19 are connected to a unit 20 processing the signals of the sensors in order to determine the dynamic state of the wheels and ensure the regulation of the operation of the valves 8.
    Each node 1 (Fig. 1) is associated with brake cylinders 11 of both wheels of the respective axle, however, it is possible to install four nodes separately connected with the corresponding cylinder 11,
    Each assembly 1 has a housing within which there are four cylindrical chambers 21-24, in each of which are respectively pistons 25-27 and a spool 28,
    Each of the pistons, as well as the spool 28, divides the corresponding chamber into two cavities. The chamber 21 accommodates a piston 25, which divides it into the rod end of cavity 29 and into rodless cavity 30, cavity 29 communicates with inlet 12 through channel 31, which is coaxial with chamber 21. Channel 32 passes across chamber 21, connecting chamber 22 with an orifice 9. The piston 25 a rod 33, the free end of which has a conical shape for opening and closing the channel 31. The cavity 30 communicates through the channel 34 with the internal opening 35 leading to the valve 8 and through the filter 36 to the opening 13.
     The chamber 22 accommodates a piston 26, which divides it into a rod cavity 37 and a rodless cavity 38. Cavity 37 communicates through valve 39, and channel 40 connects to cavity 29. Valve 39 includes a ball 41 placed in chamber 42 and connected to the piston rod 43 of the piston 26, the cavity 38 is connected to the cavity 30 by means of the channel 44. °
    The chamber 23 accommodates a piston 27 which separates it into a rod cavity 45 and a rodless cavity 46. The cavity 45 communicates through channel 47 with cavity 37 and through the ball valve 48 and channel 49 with channel 31. The valve 48 includes a ball 50 in contact with the end of the rod 51 of the piston 27. The cavity 46 is connected via a regulating device 52 with a bypass hole 53j communicating with the valve 8.
    权利要求:
    Claims (1)
    [1]
    1. Patent of Great Britain 1327589, cl. F 2 F, pub. 1973.
    类似技术:
    公开号 | 公开日 | 专利标题
    US4687259A|1987-08-18|Hydraulic brake system with slip control
    US4641895A|1987-02-10|Brake system with slip control for automotive vehicles
    US4316642A|1982-02-23|Control device for hydraulic brake systems incorporating antiskid control apparatus
    US4875741A|1989-10-24|Anti-skid braking control system for use on motor vehicle
    US4229049A|1980-10-21|Hydraulic pressure control system for split brake system
    SU858553A3|1981-08-23|Hydraulic distributing arrangement of car braking system
    GB1215988A|1970-12-16|Improvements in or relating to hydraulic braking systems
    US4838620A|1989-06-13|Traction system utilizing pump back based ABS system
    US4796958A|1989-01-10|Integrated anti-lock braking system
    US4480876A|1984-11-06|Antilock braking system
    GB2185299A|1987-07-15|Hydraulic servo brake system with slip control
    GB1183825A|1970-03-11|Improvements in or relating to Hydraulic Systems.
    SE455590B|1988-07-25|MANUAL DEVICE FOR A HYDRAULIC BRAKE SYSTEM WITH SLIR CONTROL WHICH IN THE MAIN CYLINDER HAS A TWO-PISTON PISTON WHICH IS SLIDELY STEERED IN A POSITIONING HOUSING
    US4576004A|1986-03-18|Braking device with oppositely movable diaphragms
    US3441319A|1969-04-29|Hydrostatic braking apparatus with servocontrol for tractor vehicle and its trailer
    US4828336A|1989-05-09|Skid-controlled brake system
    US4196592A|1980-04-08|Hydraulic brake booster
    GB1243323A|1971-08-18|A dual circuit brake system with antiskid control
    US3963277A|1976-06-15|Vehicle brake system
    US3889469A|1975-06-17|Tandem master cylinder with in-line check valves
    EP0130297A1|1985-01-09|Fast-fill master cylinder
    US4571943A|1986-02-25|Tandem brake booster with hydraulic mechanism for rear diaphragm force reversal
    SE456003B|1988-08-29|HYDRAULIC BRAKING SYSTEM FOR VEHICLES WITH A HYDRAULIC POWER AMPLIFIER AND A MAIN CYLINDER SPEC WITH A DOUBLE SITE VALVE PROVIDED BETWEEN THE MAIN CYLINDER RINGS AND EXPANSION CONTAINER
    US3173261A|1965-03-16|Fluid pressure braking systems
    US4805966A|1989-02-21|Slip-control hydraulic brake booster with braking-pressure responsive valve for fast-fill cylinder
    同族专利:
    公开号 | 公开日
    GB1545973A|1979-05-16|
    DE2650726C3|1979-04-26|
    DE2650726B2|1978-09-07|
    IT1050933B|1981-03-20|
    FR2330573B1|1978-06-30|
    FR2330573A1|1977-06-03|
    DE2650726A1|1977-05-18|
    JPS5284372A|1977-07-13|
    US4033638A|1977-07-05|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US3286734A|1964-11-16|1966-11-22|Goodyear Tire & Rubber|Three way pressure control servo valve|
    US3486801A|1968-08-01|1969-12-30|Goodyear Tire & Rubber|Brake pressure control valve|
    GB1268932A|1969-03-06|1972-03-29|Simms Group Res Dev Ltd|Improvements in or relating to braking apparatus|
    US3702713A|1970-09-16|1972-11-14|Itt|Anti-skid control device|JPS5633256B2|1976-08-21|1981-08-03|
    IT1091415B|1977-09-12|1985-07-06|Fiat Spa|ACTUATOR FOR ANTI-SLIP DEVICE|
    DE2804854A1|1978-02-04|1979-08-09|Bosch Gmbh Robert|EQUIPMENT FOR ANTI-SKID PROTECTION SYSTEMS FOR MOTOR VEHICLES|
    DE3051254C3|1979-02-23|1997-10-09|Lucas Ind Plc|Anti-lock brake control system|
    GB2045372B|1979-02-23|1983-09-14|Lucas Industries Ltd|Anti-skid brake control systems|
    JPS6345993B2|1979-02-23|1988-09-13|Lucas Ind Plc|
    WO1983001929A1|1981-12-04|1983-06-09|Garlock Inc|Anti-lock brake modulator, apparatus and method|
    JPS59209944A|1983-05-16|1984-11-28|Nissan Motor Co Ltd|Anti-skid control device|
    US4854649A|1987-01-14|1989-08-08|Nippon A B S, Ltd.|Anti-skid control apparatus for a vehicle braking system|
    GB8811013D0|1988-05-10|1988-06-15|Lucas Ind Plc|Improvements in hydraulic anti-lock braking systems for vehicles|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    IT6975175A|IT1050933B|1975-11-07|1975-11-07|HYDRAULIC SYSTEM FOR BRAKING EQUIPPED WITH AN ANTI-SLIP DEVICE|
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