• 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:
    Die Erfindung befaßt sich mit der Aufgabe, bekannte Oberlast-Schutz- und/oder -Warneinrichtungen für eine bremsdruckbetätigbare Fahrzeugbremse derart zu verbessern, daß sie eine Überlast-Warnanzeige bzw. einen Oberlastschutz gewährleisten, die weitgehend verzögerungsfrei erfolgen. In einer Ausführungsform schlägt die Erfindung vor, mittels einer Vergleichseinrichtung einen von der auf eine Betätigungseinrichtung der Fahrzeugbremse einwirkenden Stellgröße sowie von Betriebsdaten des Fahrzeugs und/ oder von den Auslegungsdaten der Bremse und der Zuspanneinrichtung bestimmten Rechnungs-Bremsdruck pRech mit dem Ist-Bremsdruck pist zu vergleichen und ein Warnsignal zu geben, wenn pist um einen vorbestimmten Wert von pRech abweicht. In einer anderen Ausführungsform schlägt die Erfindung vor, das Warnsignal abzugeben, wenn die von dem anstehenden Bremsdruck erzeugte Ist-Bremskraft um einen vorgestimmten Wert von einer aus dem Bremsdruck und den Auslegungsdaten der Bremse und der Zuspanneinrichtung bestimmten Rechnungs-Bremskraft abweicht.
    公开号:SU1540651A3
    申请号:SU864009779
    申请日:1986-01-21
    公开日:1990-01-30
    发明作者:Фельдманн Иоахим；Шульт Манфред
    申请人:Вабко Вестингхауз Фарцойгбремзен Гмбх (Фирма)；
    IPC主号:
    专利说明:

    This invention relates to the automotive industry.
    The purpose of the invention is to improve the reliability of the device.
    The drawing shows a block diagram of the brake system, in which the adjustable parameter forms the braking force or braking torque.
    The brake system has a drive circuit for brake mechanisms 1 and 2 of the front wheels with brake mechanisms for each side of the vehicle. The expanding device for each brake mechanism I and 2 is loaded through its own solenoid valve 3 and 4 by pressure from receiver 5.
    The brake system has, in addition to this, the brake circuit
    Gears 6 and 7 rear wheels. The expansion devices of the brakes 6 and 7 are loaded through the own solenoid valve 8 or 9 by pressure from the receiver 10.
    The existing brake actuator pressure in expander devices is measured using the appropriate pressure sensors 11-14 in the brake drive system, which, depending on the pressure in the brake drive system, produce electrical output signals in the form of a sequence of actual pressure signals in the brake drive system.
    With each brake mechanism il, 2, 6 and 7 are matched to each other
    cl
    4i
    ABOUT
    about
    SP

    s
    The braking force sensors 15-18, which measure the braking force created by the corresponding mating braking mechanism of the car, and depending on its magnitude, produce output signals, which are signals of the actual braking force. Actual braking force signals can also be evaluated as actual braking torque signals,
    In addition, a load sensor 19 couples to the rear brake drive circuit, which measures the load on the rear axle and generates load signals dependent on it.
    An electrical control device is provided as a drive device for each brake mechanism of the vehicle and, consequently, of the brake system, the adjustable value of which is the braking force. This regulating device consists of a sensor 20, a control unit 21, which, together with the brake force sensors 15-18 and the load sensor 19, forms an electronic regulating equipment.
    Comparison unit 22 is coupled with the front wheel brake actuator circuit, another unit of comparison 23 is coupled with the rear wheel brake actuator circuit.
    Comparison blocks 22 and 23 can be combined either with each other, or in whole or in part with block 21. Comparative blocks 22 and 23 each are connected to block 21. In addition, comparison block 22 is connected to pressure sensors 11 and 12 in the braking system drive in the front wheel drive brake circuit, and the comparison unit 23 is connected to pressure sensors 13 and 14 in the brake drive system, rear brake wheel drive circuit.
    The alarm unit 24 is connected to the outputs of the comparison units 22 and 23.
    Sensor 20 has an actuator, for example a pedal. The brake system parameter sensor is actuated by actuating an actuator. When actuated, the sensor 20 outputs a dependent on linear or angular movement of the actuating element or on the acting
    on it a driving force signal, which is hereinafter referred to as an S-signal or simply S.
    The device works as follows.
    The operation of the brake system is primarily explained by the brake mechanism and related devices. Block 21, on the basis of the applied S-signal, calculates the signal corresponding to the actual value of the braking force. Unit 21 compares the signal issued by brake force sensor 5 corresponding to the actual braking force value with the signal corresponding to the specified braking force value, and holds valve 3 in the open position until pressure is transmitted from receiver 5 to the brake unclamping device. which corresponds to the actual braking force, will with a predetermined accuracy correspond to the signal corresponding to the given braking force. If, after closing valve 3, a change in braking force appears and, consequently, a deviation of the corresponding braking force corresponding to the actual value of the signal, unit 21 controls valve 3 depending on the type of deviation in terms of decreasing or increasing pressure PcpaKr until the corresponding signal of the braking force recovers actual braking force.
    At the same time, block 21, on the basis of the corresponding predetermined braking force of the signal, calculates the calculated signal of the braking force, which is characterized by the calculated pressure determined by the general formula in the braking drive systems
    R . FpQC4 - d
    (ABOUT
    where A is a constant characterizing the design parameters of the brake mechanism and expanding device (internal identification signal, working area of the expanding device, gear ratio of the braking drive and efficiency);
    Bj0fr specified by the block 21 signal corresponding to the nominal value of the braking force.
    Unit 21 compares the signal supplied by sensor 11, which corresponds to the actual pressure in the brake actuator system, with the signal corresponding to the calculated pressure in the brake actuator system. If the signal corresponding to the actual pressure in the brake-drive system exceeds the signal corresponding to the calculated pressure in the brake-drive system by a predetermined value (7 Rasci) i, then block 21 issues a warning signal, which includes 24 isolations, giving a visual or sound signal. However, unit 24 can also be designed as a brake unloading device in such a way that when it receives a warning signal in the manner described earlier it acts on the control system of valve 3. To this end, unit 24 can be directly connected to unit 21 (not shown).
    In accordance with the above description, the S-signal-specifying value is the adjustable amount of the braking force and the value of the control device that controls the actual pressure in the brake drive system.
    When calculating the corresponding nominal braking signal strength, as well as the calculated signal for the drive circuit of the brake mechanisms 6 and 7 of the rear wheels corresponding to the pressure in the brake-drive system, unit 21 takes into account the level of load on the rear axle. The calculation of the specified parameter for the wheel brakes of the rear axle includes the iALb coefficient obtained using the signal sensor 19 of the load, which characterizes the level of load on the rear axle, so that unit 21 also functions as a load-dependent pressure regulator in the brake actuator system (ALB). Besides
    0651
    Rrasch. dd4 front wheels
    In, that. D "AERISh A d / 10 nepfAHui wheels (
    (2)
    ten
    and for the design pressure in the system (driving the rear wheel brake mechanisms to
    VEOD.AL zadshi A dsc zodimg CLASS
    R rasi.dll eadnmk suffered
    ABOUT)
    When setting B for front wheels and B ead. for the rear wheels, unit 21 takes into account the signal from load sensor 19.
    权利要求:
    Claims (1)
    [1]
    Invention Formula
    A device for preventing an overload of an electro-pneumatic brake actuator of a motor vehicle comprising an electronic control unit for a solenoid valve for controlling the supply of working medium from the receiver to the brake chamber depending on the mismatch of the signals supplied to the control unit inputs from the control state sensor and the change sensor the parameter characterizing the operation of the brake mechanism, with the signal generated in the control block characterizing the specified action The brake actuator and the pressure sensor in the brake chamber, characterized in that, in order to increase the reliability of the device, it is equipped with a comparison unit and an alarm unit, the sensor measuring the parameter characterizing the operation of the brake mechanism is a brake force or braking torque sensor, The state sensor of the control is a linear or angular displacement sensor, a control or force sensor on the control, and a control unit for calculating the permissible value is built into the control unit. aleni
    five
    Moreover, depending on the signal from the sensor in the brake chamber for a given load nipple 19, the wheel brakes 1 and 2 of the front axle can be adjusted simultaneously.
    In view of the above, the general formula (1) for the design pressure in the drive system of the brake mechanisms of the front wheels can be converted to the formula
    five
    This means that the control unit, taking into account the performance characteristics of the vehicle and / or design data of the brake mechanism, in this case, a pressure sensor in the brake chamber is connected to one input of the comparison unit, the output of the calculation unit is connected to another input, and the output of the comparison unit is connected to the input of the alarm unit .
    With
    fc S
    Midrange |
    类似技术:
    公开号 | 公开日 | 专利标题
    SU1540651A3|1990-01-30|Device for preventing overload of brake mechanism of automotive vehicle with electropneumatic brake actuation
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    US5816667A|1998-10-06|Method of controlling the braking pressure as a function of the rate of pedal actuation
    US4861115A|1989-08-29|Electrically-controlled motor vehicle brake system
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    US5549364A|1996-08-27|Method and device for adjusting the brake force distribution between a towing vehicle and a trailer
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    US5402345A|1995-03-28|Method for estimating speed of a braked vehicle
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    JPH02279410A|1990-11-15|Ground clearance control device
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    US7062369B2|2006-06-13|Method and device for determination of a wheel brake parameter
    同族专利:
    公开号 | 公开日
    EP0188685A2|1986-07-30|
    EP0188685B1|1991-05-15|
    EP0188685A3|1988-10-05|
    DE3502825A1|1986-07-31|
    DE3582878D1|1991-06-20|
    JP2694436B2|1997-12-24|
    US4708225A|1987-11-24|
    JPS61175165A|1986-08-06|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US3235036A|1962-10-31|1966-02-15|Research Corp|Brake control system|
    US3402972A|1966-08-11|1968-09-24|Gen Electric|Continuous pressure control system|
    US3433536A|1967-10-11|1969-03-18|Gen Motors Corp|Regulated anti-lock braking system|
    DE1961039A1|1969-12-05|1971-06-16|Bosch Gmbh Robert|Vehicle brake system with anti-lock protection|
    CS202725B1|1978-04-28|1981-01-30|Vladimir Auska|Connection for evaluation of the rises ans falls of pressure in the braking systems|
    DE3018188A1|1980-05-13|1981-11-19|Daimler-Benz Ag, 7000 Stuttgart|Monitor for brake condition on individual wheels - gives display of assessed state or defect warning signal on dashboard|
    US4361825A|1980-05-16|1982-11-30|Southern Railway Company|Automatic train-line air brake pressure monitoring system|
    DE3119153A1|1981-05-14|1982-12-02|Robert Bosch Gmbh, 7000 Stuttgart|ARRANGEMENT FOR DETERMINING THE ADHESIVE VALUE OF A TRAMWAY|
    EP0114821A1|1982-07-14|1984-08-08|MICHAEL, Shawky Shafeek|Modified brake shoe pads|
    JPS6339466B2|1983-01-12|1988-08-05|Sumitomo Electric Industries|
    JPS59230856A|1983-06-14|1984-12-25|Mazda Motor Corp|Controller of electromobile|DD257734A3|1986-01-27|1988-06-29|Zwickau Ing Hochschule|MULTI-CIRCULAR SAFETY DEVICE, ESPECIALLY IN COMPRESSED AIR BRAKING SYSTEMS OF MOTOR VEHICLES|
    US4804237A|1987-04-27|1989-02-14|Eaton Corporation|Tractor-trailer brake control system|
    DE3742996A1|1987-12-18|1989-06-29|Wabco Westinghouse Fahrzeug|OVERLOAD WARNING DEVICE FOR A TRAILER BRAKE|
    DE3805831A1|1988-02-25|1989-09-07|Teves Gmbh Alfred|Brake pressure control device|
    EP0487507B1|1988-08-26|1995-10-18|ITT Automotive Europe GmbH|Method for monitoring a hydraulic brake system and a brake system for carrying out this method|
    EP0485367A3|1988-08-26|1992-05-27|Alfred Teves Gmbh|Method for monitoring a brake system and a brake system for carrying out this method|
    DE3833922A1|1988-10-05|1990-04-12|Knorr Bremse Ag|Bogie vehicle with electro-hydraulic brake and hydraulic suspension|
    GB8905311D0|1989-03-08|1989-04-19|Lucas Ind Plc|Electronic braking system|
    SE463554B|1989-04-21|1990-12-10|Vbg Prod Ab|SEAT AND DEVICE AT VEHICLE BRAKES|
    DE4036940A1|1990-02-17|1991-08-22|Bosch Gmbh Robert|BRAKE SYSTEM FOR A VEHICLE|
    EP0520048B1|1990-12-17|1994-10-05|ZBINDEN, Hugo|Electrohydraulic or electropneumatic braking control device for trailer axles having power brakes|
    JP2573252Y2|1991-07-15|1998-05-28|株式会社曙ブレーキ中央技術研究所|Brake control device|
    DE4131169A1|1991-09-19|1993-03-25|Wabco Westinghouse Fahrzeug|METHOD FOR BRAKING A VEHICLE|
    DE4210992C3|1992-04-02|2000-10-26|Telefunken Microelectron|Method for checking a pressure-operated braking device|
    GB9208208D0|1992-04-14|1992-05-27|Lucas Ind Plc|Improvements in hydraulic braking systems for vehicles|
    DE4215340A1|1992-05-09|1993-11-11|Wabco Westinghouse Fahrzeug|Method for monitoring the at least one motor vehicle brake of the motor vehicle of a vehicle train for overload|
    DE4215341A1|1992-05-09|1993-11-11|Wabco Westinghouse Fahrzeug|Method for monitoring the at least one trailer brake of the trailer of a vehicle train for overload|
    GB9215510D0|1992-07-22|1992-09-02|Grau Ltd|Braking systems|
    DE4242887A1|1992-12-18|1994-06-23|Wabco Westinghouse Fahrzeug|Brake system with at least one brake|
    JP2952798B2|1993-04-14|1999-09-27|本田技研工業株式会社|Failure detection method in fluid pressure system and fluid pressure brake system for vehicle|
    DE4317846A1|1993-05-28|1994-12-01|Wabco Vermoegensverwaltung|Procedure for setting a braking value to a target braking value|
    DE19628938C2|1995-10-26|1997-12-18|Hermann Ahlers|Device for conveying information in motor vehicles|
    EP0803424B1|1996-04-25|2003-07-30|Denso Corporation|Braking system for automotive vehicle|
    US5791441A|1996-11-25|1998-08-11|Matos; Anthony|Brake failure monitoring system|
    DE19755112B4|1996-12-21|2007-06-28|Volkswagen Ag|Method and monitoring device for determining a decrease in the braking effect of a motor vehicle brake|
    GB2345322B|1998-12-31|2002-12-11|Lucas Ind Plc|Driver warning of braking malfunction in electro-hydraulicbraking systems|
    DE10156607A1|2001-11-17|2003-05-28|Wabco Gmbh & Co Ohg|Method and device for monitoring braking processes of a motor vehicle|
    DE10219040A1|2002-04-29|2003-11-13|Wabco Gmbh & Co Ohg|Method and arrangement for applying brake energy in electronically controlled brake systems of vehicle combinations comprising at least one tractor and trailer vehicle|
    DE10219067A1|2002-04-29|2003-11-20|Wabco Gmbh & Co Ohg|Method and arrangement for applying brake energy in electronically controlled braking systems of vehicles|
    DE10219039A1|2002-04-29|2003-11-13|Wabco Gmbh & Co Ohg|Method and arrangement for monitoring vehicle brakes of electronically controlled brake systems of vehicles and vehicle combinations for overload|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE19853502825|DE3502825A1|1985-01-29|1985-01-29|OVERLOAD PROTECTION AND / OR WARNING DEVICE|
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