• 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:
    The present invention has a hydraulic pump 18 and a high pressure-hydraulic accumulator 24 for power braking, which is used as a braking force-setting value transmitter for power braking and for the operation of a braking device per muscle force in the event of a power braking device failure. A hydraulic vehicle braking device with a customary main cylinder 10 is provided. The present invention proposes to connect the suction side of the hydraulic pump 18 to the low pressure-hydraulic accumulator 20 in which the braking liquid flows in the wheel braking cylinder 16 when the wheel braking pressure is lowered. The invention has the advantage that it is not necessary to connect to the reservoir 12 of the main cylinder 10 of the hydraulic pump 18, which threatens the function of the power-assisted braking system as well as the power-operated braking system in case of leakage. .
    公开号:KR20000064535A
    申请号:KR1019980706627
    申请日:1997-11-06
    公开日:2000-11-06
    发明作者:디르크 호프만；위르겐 빈더；마르틴 파우；에베르하르트 슝크
    申请人:클라우스 포스, 게오르그 뮐러；로베르트 보쉬 게엠베하；
    IPC主号:
    专利说明:

    Hydraulic vehicle braking system
    This kind of vehicle braking system is known from S. A. E.-Paper 96 0991. Known vehicle braking devices present a main brake cylinder connected to a wheel braking cylinder at least in an associated circuit of a block valve. Other known vehicle braking devices present a hydraulic pump which draws the braking fluid from the reservoir and supports it into a high-pressure accumulator. The high pressure hydraulic accumulator, together with the external energy accumulator, the high pressure hydraulic accumulator, constitutes a hydraulic pump and an external energy source. Brake pressure configuration The wheel braking cylinder is connected to the pressure side of the high-pressure accumulator or hydraulic pump. Brake pressure drop valves, which are always reconnected over the wheel brake cylinder, can connect the reservoir and the wheel brake cylinder.
    The invention relates to a hydraulic vehicle braking device having a power-actuating device and a muscle-assisted braking device, in the kind of the main claim.
    1 shows a first embodiment of a vehicle braking apparatus of the present invention;
    2 shows a second embodiment of a vehicle braking apparatus of the present invention.
    At least the block valve is shut off and the braking pressure component valves open for power braking, so that the braking fluid in the pressure flows into the wheel braking cylinder in the high-pressure hydraulic accumulator. The intended wheel braking pressure and the braking moments produced in the wheel braking cylinder can be adjusted and changed in a known manner using braking pressure configuring valves and braking pressure drop valves. The main brake cylinder, which is hydraulically separated from the wheel brake cylinder with one block valve, shut off during power braking, is thus used only as a brake moment-setting value transmitter, and the wheel brake pressure is adjusted according to its operation.
    For example, in the event of a failure of an external energy source, the primary cylinders can be moved in their shut-off position in the usual way, for example by means of self-operating opening of the block valves and returning of the braking pressure compensating valves and the braking pressure drop valves for auxiliary braking. Braking.
    Reference will now be made in detail to the accompanying drawings, in which embodiments of the invention are shown.
    The vehicle braking device of the present invention depicted in FIG. 1 presents a Tandem-main braking cylinder 10 with a braking fluid-storage 12 mounted, with two braking cycles connected. The main cylinder 10 is again connected to a block valve 14 which is open in its basic position in each braking cycle, and the wheel braking cylinder 16 is hydraulically applied to the main cylinder 10 above it. Is connected.
    The vehicle braking device of the present invention, depicted in FIG. 1, presents a hydraulic pump 18 with a pump motor 19, the suction side of which is provided to the low pressure-hydraulic accumulator 20 and to the non-return valve 22. The high pressure-hydraulic accumulator 24 is connected to the pressure side under the linkage circuit. The wheel braking cylinders 16 are blocked in their default position and towards the pressure of the hydraulic pump 18 via the braking pressure-constituting valve 26, with the differential pressure valve 28 integrated therein, and the high pressure-hydraulic. It is connected to the accumulator 24. The braking pressure drop valves 30, which are disconnected in their basic positions, which are connected again on the wheel braking cylinder 16, allow the wheel braking cylinder 16 to be connected to the suction side of the low pressure-hydraulic accumulator 20 and the hydraulic pump 18. It is hydraulically connected.
    The hydraulic conduit leading from the pressure side to the suction side of the hydraulic pump 18 is in turn equipped with two pedal passage valves 32 and 24 which are shut off at their basic positions, between which a floating piston-moving space is located. In the depicted implementation of the displacement space, the movement space of the main cylinder 10 is connected.
    In the depicted embodiment, the wheel braking cylinders 16 of the vehicle wheels of one vehicle axle are also connected to the braking cycle in the moving chamber of the tandem-main braking cylinder 10. That is, the wheel braking cylinders 16 of the rear wheels are connected to a floating piston-shifting chamber, which is further connected between the pedal valves 32 and 34 as already introduced. The braking tube leading from the block valve 14 to the wheel braking cylinder 16 is equipped with an adjustment valve 36 which is open in its basic position, over which the wheel braking cylinder 16 of the vehicle wheels of a vehicle axle is mounted. ) Are hydraulically coupled to one another and can be separated from one another through the blocking of the regulating valve 36.
    According to the vehicle braking device of the present invention, the wheel pressure sensor 38 is connected to each wheel braking cylinder 16, the external pressure sensor 40 is connected to the high-pressure hydraulic accumulator 24, and each of the main cylinders 10 is moved. A pressure passage 42 for the chamber and a pedal passage sensor 44 for the brake pedal 46, in which the main cylinder 10 can be operated, are presented. Wheel rotation sensors 48 are then provided on each vehicle wheel.
    The entire valves 14, 26, 30, 32, 34, 36 are formed as 2 / 2-pass magnetic valves in the depicted embodiment. The pressure build-up and pressure drop valves 28, 30 can be replaced (not depicted) with a 3 / 3-pass magnetic valve as well as the pedal passage valves 32, 34. The braking pressure configuration—and the braking pressure drop valves 28 and 30 and the pedal passage valves 32 and 34 are formed as proportional valves to improve the regulation quality. Pedal passage valves may also be formed with proportional pressure valves 50, 52, as depicted in FIG. 2. In addition, the vehicle braking device of the present invention depicted in FIG. 2 is configured identically to the vehicle braking device depicted in FIG. 1 and operates in the same manner. In that regard, FIG. 2 is instructed to refer to the relevant implementation of FIG. 1. The control of the valves 14, 26, 30, 32, 34, 36 and pump motor 19 is electronically signaled by the pressure sensors 38, 40, 42, the pedal passage sensor 44 and the wheel rotation sensor 48. It is executed using the controller 54.
    Power braking
    The block valve 14 is shut off for external energy braking, that is, the main cylinder 10 is separated from the hydraulic wheel braking cylinder 16. The main cylinder 10 acts as a braking force-setting value-transmitter for power braking. The pressure is measured in the moving chamber using a pressure sensor 42 connected to the moving chamber of the main cylinder 10. This pressure depends on the force, which causes the brake pedal 46 to wear out, and these two pressure sensors 42 are thus represented as pedal force sensors in the following. One of the two pedal force sensors 42 is involved for power braking, and the second pedal force sensor 42 is provided for safety when one pedal force sensor 42 fails. .
    The hydraulic pump 18 and the high pressure-hydraulic accumulators 24 constitute an external energy source, an external energy accumulator of the high pressure-hydraulic accumulator 24, the pressure of which is measured using an external pressure sensor 40 connected thereto. The braking fluid flows out of the high pressure-hydraulic accumulator 24 for power braking. Using the hydraulic pump 18, the high pressure-hydraulic accumulator 24 is put in pressure, with refilling sometimes being sufficient. In other words, the hydraulic pump 18 is occasionally powered.
    Brake pressure configuration—and wheel brake pressures with brake pressure drop valves 26, 30 depend on the pressure produced in the main cylinder 10 through the wear of the brake pedal 46, wheel brake cylinder 16. Adjusted in Since each wheel braking cylinder 16 is provided with a braking pressure configuration—and braking pressure drop valves 26 and 30, the wheel braking pressure can be individually adjusted after the adjustment valve 36 is shut off. Leakage control is possible using brake pressure configuration—and brake pressure drop valves 26 and 30 through wheel brake pressure modulation in a known manner. Unless wheel individual pressure adjustments are made, the wheel braking pressure is applied in some wheel braking cylinders 16 or in all wheel braking cylinders 16, such as in wheel braking cylinders 16 of vehicle wheels of one vehicle axle. It can be adjusted with the braking pressure configuration—and the braking pressure drop valves 26, 30.
    If the main cylinder 10 is not operated, if necessary, the high-pressure hydraulic accumulator 24 uses the hydraulic pump 18 to draw the suction side of the hydraulic pump 18 from the reservoir 12 of the main cylinder 10. It can be replenished through the opening of the pedal passage valve 34 mounted above. Replenishment of the high pressure-hydraulic accumulator 24 may be necessary, for example, when the braking fluid is brought into the reservoir 12 from the high pressure-hydraulic accumulator 24 through thermal expansion.
    The two pedal passage valves 32 and 34 together with the two hydraulic accumulators 20 and 24 and the hydraulic pump 18 constitute an active pedal passage simulator for power braking: the block valves 14 shut off during power braking. No braking liquid can be moved from the main brake cylinder 10 in the direction of the wheel braking cylinder 16. Nevertheless, in order to obtain a pedal passage, the pedal passage valve 34 mounted on the suction side of the hydraulic pump 18 is opened until the desired pedal passage is reached. The pedal passage valve 32 mounted on the pressure side of the hydraulic pump 18 is opened for the return of the brake pedal 46 so that the braking fluid flows from the high-pressure hydraulic accumulator 24 into the main cylinder 10. This is returned to the original place together with the brake pedal 46.
    The pedal path measured using the pedal path sensor 44 is adjusted depending on the pressure produced in the main cylinder 10, and this pressure can be measured by the wear of the brake pedal 46 and the pedal force sensor 42. Depends on the power In this way, each desired pedal force / path-characteristic curve can be adjusted. The pedal force / path-characteristic curve can also be varied simply by changing the adjustment calculation method in which the electronic controller 54 controls the pedal passage valves 32 and 34. No change of the hydraulic components of the vehicle braking system is necessary. This allows a simple way of applying the vehicle braking device to different vehicles. It is also conceivable to apply the pedal force / path-characteristic curve to each driver's wishes.
    The active pedal passage simulator 18, 20, 24, 32, 34 also utilizes proportional pressure valves 50, 52 instead of proportional passage valves 32, 34, as illustrated in FIG. 2, as shown in FIG. 2. Can be realized.
    Auxiliary braking system
    In the event of a failure of the actuating power braking device, the vehicle braking device of the invention can be operated with an auxiliary braking device per muscle force: for that the entire valves 14, 26, 30, 32, 34, 36 are in their basic positions. Keep it. As the brake pedal 46 wears out, the main cylinder 10 is operated as in actuation braking. The braking liquid moved from the moving chamber of the main cylinder 10 reaches all the wheel braking cylinders 16 through the open block valve 14 and the open regulating valve 36. The realization of an active pedal aisle-simulator, which does not act on muscular braking, does not receive any of the braking fluid moved from the main-brass cylinder 10 during muscular braking using the two pedal aisle valves 32, 34. No pedal passage is lost by not extending the passage, and the braking liquid moved from the main cylinder 10 has the advantage of flowing in except the wheel braking cylinder 16. In other words, the pedal passage is used completely when braking muscles.
    The vehicle braking device of the present invention is redundant and has the advantage of safety against failure in particular. In the vehicle braking system, when any hydraulic mounting component fails, it can be operated with muscle power at least with the auxiliary braking system.
    In the present invention, the vehicle braking device with the features of the main claims presents a low pressure-hydraulic accumulator, and when the braking pressure drop valve is opened for the reduction of the wheel braking pressure, the hydraulic pump from the low pressure-hydraulic accumulator is brake fluid. And the braking fluid flows from the wheel braking cylinder into the low pressure-hydraulic accumulator. By using a low-hydraulic accumulator, it is always possible to abandon the brake fluid reservoir for the power brake system, the hydraulic pump is not connected to the brake fluid reservoir of the main brake cylinder and no brake fluid is applied in the wheel brake cylinder during power brake. It does not flow back into the cylinder or into its reservoir. The power brake system constitutes a blocked system that ensures strong safety against failure. It eliminates the need for any hydraulic connection to the reservoir of the main cylinder and as a suction conduit for the hydraulic pump and as a return converter of the wheel braking cylinder. This has the advantage that existing main cylinders with mounted brake fluid reservoirs can be used without first installing a connection to the reservoir. In addition, those types of connections and hydraulic conduits have the advantage of requiring a risk of leakage. Leakage in either the reservoir or one of these connections of the hydraulic conduit mentioned affects not only the power- but also the muscle-braking system, which can have fatal consequences for the failure of the whole vehicle brake system. In the present invention, the vehicle braking device is also provided with their power-operated braking device and their muscle-assisted braking device redundantly, and also has the advantage of significantly increased safety against failure.
    In the following claims, developments and advantageous forms of the invention presented in the main claims to this subject are shown.
    权利要求:
    Claims (9)
    [1" claim-type="Currently amended] At least one of the power-operated braking system and the muscle-assisted braking system, the main braking cylinder with at least one wheel braking cylinder connected over the isolation valve, the high pressure-hydraulic accumulator and the wheel braking cylinder over the braking pressure component valve A device with a connected hydraulic pump and a brake pressure drop valve reconnected to the wheel brake cylinder, wherein the vehicle brake system, along with its suction side, brakes the hydraulic pump 18 and over the brake pressure drop valve 30. A hydraulic vehicle braking device, characterized in that it presents a low pressure-hydraulic accumulator (20) to which a cylinder (16) is connected.
    [2" claim-type="Currently amended] 2. A hydraulic vehicle braking device according to claim 1, characterized in that the braking pressure component valve (26) and the braking pressure drop valve (30) are formed as proportional valves.
    [3" claim-type="Currently amended] 2. The main brake cylinder (10) according to claim 1, characterized in that the main brake cylinder (10) is formed as a tandem-main braking cylinder (10) to which two braking cycles are always connected which present at least one wheel brake cylinder (16). Hydraulic vehicle braking system.
    [4" claim-type="Currently amended] 4. A hydraulic vehicle braking device according to claim 3, characterized in that the wheel braking cylinders (16) on the vehicle wheels of the vehicle axle are connected to the braking cycle and are interconnected over the regulating valves (36).
    [5" claim-type="Currently amended] 2. A hydraulic vehicle braking device according to claim 1, characterized in that the vehicle braking device presents a brake slide control device (26, 30, 48, 54).
    [6" claim-type="Currently amended] The main cylinder (10) according to claim 1, wherein the main cylinder (10) presents a pedal force sensor (42) and a pedal passage sensor (44) and two pedal passage valves (32, 34; 50, 52), wherein the pedal passage valve ( One of the 34; 52 is in the main cylinder 10 and on the suction side of the hydraulic pump 18 or in the low pressure-hydraulic accumulator 20 and the other of the pedal passage valves 32; Hydraulic vehicle braking device, characterized in that it is inserted into the cylinder (10) and on the pressure side of the hydraulic pump (18) or in the high-pressure hydraulic accumulator (24).
    [7" claim-type="Currently amended] 7. A hydraulic vehicle braking device according to claim 6, wherein the pedal passage valves are formed of proportional passage valves (32, 34).
    [8" claim-type="Currently amended] 7. A hydraulic vehicle braking device according to claim 6, characterized in that the pedal passage valves are formed of proportional pressure valves (50, 52).
    [9" claim-type="Currently amended] 2. A hydraulic vehicle braking device according to claim 1, characterized in that the main cylinder (10) presents two pedal force sensors (42) which are independent of each other.
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    同族专利:
    公开号 | 公开日
    JP4070819B2|2008-04-02|
    KR100572496B1|2007-12-07|
    US6149247A|2000-11-21|
    WO1998031576A1|1998-07-23|
    DE59701967D1|2000-08-10|
    EP0889815A1|1999-01-13|
    JP2000507188A|2000-06-13|
    EP0889815B1|2000-07-05|
    DE19701070A1|1998-07-16|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    1997-01-15|Priority to DE19701070.9
    1997-01-15|Priority to DE1997101070
    1997-11-06|Application filed by 클라우스 포스, 게오르그 뮐러, 로베르트 보쉬 게엠베하
    1997-11-06|Priority to PCT/DE1997/002567
    2000-11-06|Publication of KR20000064535A
    2007-12-07|Application granted
    2007-12-07|Publication of KR100572496B1
    优先权:
    申请号 | 申请日 | 专利标题
    DE19701070.9|1997-01-15|
    DE1997101070|DE19701070A1|1997-01-15|1997-01-15|Hydraulic vehicle brake system|
    PCT/DE1997/002567|WO1998031576A1|1997-01-15|1997-11-06|Hydraulic brake system|
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