WO2017169476A1 - 車両用ブレーキ液圧制御装置 - Google Patents
車両用ブレーキ液圧制御装置 Download PDFInfo
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- WO2017169476A1 WO2017169476A1 PCT/JP2017/007927 JP2017007927W WO2017169476A1 WO 2017169476 A1 WO2017169476 A1 WO 2017169476A1 JP 2017007927 W JP2017007927 W JP 2017007927W WO 2017169476 A1 WO2017169476 A1 WO 2017169476A1
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- brake
- pressure
- vehicle
- control device
- vehicle body
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
- B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
- B60T8/50—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition having means for controlling the rate at which pressure is reapplied to or released from the brake
- B60T8/5006—Pressure reapplication by pulsing of valves
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/17—Using electrical or electronic regulation means to control braking
- B60T8/176—Brake regulation specially adapted to prevent excessive wheel slip during vehicle deceleration, e.g. ABS
- B60T8/1763—Brake regulation specially adapted to prevent excessive wheel slip during vehicle deceleration, e.g. ABS responsive to the coefficient of friction between the wheels and the ground surface
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/17—Using electrical or electronic regulation means to control braking
- B60T8/176—Brake regulation specially adapted to prevent excessive wheel slip during vehicle deceleration, e.g. ABS
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/17—Using electrical or electronic regulation means to control braking
- B60T8/176—Brake regulation specially adapted to prevent excessive wheel slip during vehicle deceleration, e.g. ABS
- B60T8/1761—Brake regulation specially adapted to prevent excessive wheel slip during vehicle deceleration, e.g. ABS responsive to wheel or brake dynamics, e.g. wheel slip, wheel acceleration or rate of change of brake fluid pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
- B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
- B60T8/343—Systems characterised by their lay-out
- B60T8/344—Hydraulic systems
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
- B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
- B60T8/48—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition connecting the brake actuator to an alternative or additional source of fluid pressure, e.g. traction control systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
- B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
- B60T8/48—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition connecting the brake actuator to an alternative or additional source of fluid pressure, e.g. traction control systems
- B60T8/4809—Traction control, stability control, using both the wheel brakes and other automatic braking systems
- B60T8/4827—Traction control, stability control, using both the wheel brakes and other automatic braking systems in hydraulic brake systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T2210/00—Detection or estimation of road or environment conditions; Detection or estimation of road shapes
- B60T2210/10—Detection or estimation of road conditions
- B60T2210/12—Friction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/17—Using electrical or electronic regulation means to control braking
- B60T8/172—Determining control parameters used in the regulation, e.g. by calculations involving measured or detected parameters
Definitions
- the invention according to claim 2 is the vehicle brake fluid pressure control device according to claim 1, wherein the pressure increase control is control for repeatedly increasing and maintaining the brake fluid pressure between the master cylinder and the wheel brake. Increase the brake fluid pressure increase amount by increasing the time to open the arranged inlet control valve, and shorten the holding time to hold the brake fluid pressure, so that the pressure increase rate is increased It is characterized by that.
- the invention according to claim 1 includes a wheel speed acquisition unit that acquires the wheel speed, and a vehicle body deceleration calculation unit that calculates the vehicle body deceleration based on the wheel speed.
- a wheel speed acquisition unit that acquires the wheel speed
- a vehicle body deceleration calculation unit that calculates the vehicle body deceleration based on the wheel speed.
- the predetermined threshold value is set based on the target vehicle body deceleration, it is possible to appropriately determine whether or not a deceleration equivalent to the target deceleration has occurred.
- FIG. 1 is a hydraulic circuit diagram of a vehicle brake hydraulic pressure control device according to the present invention. It is a block diagram which shows the structure of a determination part. It is a flowchart which raises a pressure increase rate. It is a phase figure of time, deceleration, speed, and pressure concerning an example.
- FIG. 5 is a correlation diagram between a target vehicle speed and a certain time.
- the vehicle brake hydraulic pressure control device 10 is mounted on a bar handle vehicle and is applied to, for example, a front wheel of a two-wheeled vehicle.
- the vehicle brake hydraulic pressure control device 10 is provided between the master cylinder 12 and the wheel brake 14, and mainly includes a hydraulic pressure unit 40 and a control device 50.
- the vehicular brake hydraulic pressure control device 10 includes a master cylinder 12 that generates hydraulic pressure of hydraulic fluid in response to an operation of a brake lever operator 11, a reservoir 13 that temporarily stores hydraulic fluid, An inlet control valve 15 which is a normally open solenoid valve and an outlet control valve 16 (control valve means 15, 16) which is a normally closed solenoid valve provided between the master cylinder 12 and the wheel brake 14; And a check valve 18 which is provided in parallel and allows only the flow to the master cylinder 12 side.
- the vehicular brake hydraulic pressure control device 10 sucks the hydraulic fluid stored in the reservoir 13 and returns it to the master cylinder 12 side, an actuator 22 that drives the pump unit 21, and the actuator 22
- the control part 30 which performs drive control and opening / closing control of the inlet control valve 15 and the outlet control valve 16, and the determination part 31 which determines whether the pressure increase rate in pressure increase control is raised are provided.
- a wheel speed sensor 25 for detecting the wheel speed is provided in the vicinity of the wheel 23, and a signal detected by the wheel speed sensor 25 is sent to the determination unit 31, and the determination unit 31 determines the wheel speed, the estimated vehicle body speed, and the like. Vehicle deceleration is acquired.
- the wheel speed, estimated vehicle body speed, and vehicle body deceleration signals from the determination unit 31 are sent to the control unit 30, and the control unit 30 executes ABS control or the like according to the pressure increase rate. For this reason, when the vehicle body deceleration is low, the pressure increase rate in the pressure increase control can be increased.
- the normal state is a state in which the master cylinder 12 and the wheel brake 14 are communicated (the inlet control valve 15 is opened) and the wheel brake 14 and the reservoir 13 are shut off (the outlet control valve 16 is closed).
- the operation element 11 When the operation element 11 is operated, the hydraulic fluid pressure from the master cylinder 12 acts on the wheel brake 14 via the inlet control valve 15, and the wheel is braked.
- the decompression state during the ABS control is a state in which the master cylinder 12 and the wheel brake 14 are disconnected (the inlet control valve 15 is closed) and the wheel brake 14 and the reservoir 13 are communicated (the outlet control valve 16 is opened). .
- the hydraulic fluid that communicates with the wheel brake 14 flows into the reservoir 13 through the outlet control valve 16, and the hydraulic fluid pressure acting on the wheel brake 14 is reduced.
- the holding state during the ABS control is a state where the master cylinder 12 and the wheel brake 14 and the wheel brake 14 and the reservoir 13 are shut off (the inlet control valve 15 and the outlet control valve 16 are closed).
- the pump 20 is stopped, the hydraulic fluid is confined in the flow path closed by the wheel brake 14, the inlet control valve 15, the outlet control valve 16, and the pump 20, and the hydraulic fluid pressure acting on the wheel brake is kept constant. Be drunk.
- the pressure increasing state at the time of ABS control is a state in which the wheel brake 14 and the reservoir 13 are disconnected while communicating between the master cylinder 12 and the wheel brake 14.
- the control unit 30 (the vehicle brake hydraulic pressure control device 10) blocks between the wheel brake 14 and the reservoir 13 while communicating between the master cylinder 12 and the wheel brake 14 in the pressure increase control. Specifically, the inlet control valve 15 is opened and the outlet control valve 16 is closed. The hydraulic fluid generated in the master cylinder 12 increases the hydraulic fluid of the wheel brake 14.
- the vehicle brake hydraulic pressure control device 10 can control the hydraulic pressure of the brake hydraulic pressure acting on the wheel brake 14 by repeating the control cycle including at least the pressure reduction, holding, and pressure increasing states. .
- the apparatus for acquiring the wheel speed includes a wheel speed sensor 25 that detects the wheel speed, and a wheel speed acquisition unit 33 that acquires the wheel speed detected by the wheel speed sensor 25.
- the determination unit 31 includes a wheel speed acquisition unit 33, an estimated vehicle body speed calculation unit 34 that calculates an estimated vehicle body speed based on the wheel speed acquired by the wheel speed acquisition unit 33, and a vehicle body that calculates a vehicle body deceleration based on the wheel speed. And a deceleration calculation means 35.
- the vehicle body deceleration calculation means 35 satisfies the condition that the state where the vehicle body deceleration is not occurring or below a predetermined threshold value has continued for a certain period of time, and increases the pressure increase rate in the pressure increase control when the vehicle body deceleration is low. A signal is issued.
- the determination unit 31 uses a step number (hereinafter referred to as ST) 01, and the wheel speed acquisition unit 33 acquires the wheel speed VW based on a signal from the wheel speed sensor 25. .
- ST step number
- the vehicle body deceleration calculating means 35 calculates the vehicle body deceleration dVW based on the wheel speed VW.
- the region deceleration region Gn is acquired from the vehicle body deceleration dVW.
- the determination unit 31 determines whether or not the ABS control is stopped. When the ABS control is not stopped (ST04: NO), the process proceeds to ST05, and when it is stopped (ST04: YES), the process ends.
- the determination unit 31 determines whether the pressure increasing mode has been started. If it has started (ST05: YES), the process proceeds to ST06, and if it has not started (ST05: NO), the process ends. In ST06, the time TmG6 of the deceleration region G6 in which the vehicle body deceleration is equal to or less than a predetermined threshold, that is, the deceleration region G6 where the deceleration is least generated is calculated.
- ST07 if the time TimG6 of the region G6 continues for a predetermined time tsn or longer (ST07: YES), the process proceeds to ST08, and if it is less than the predetermined time tsn (ST07: NO), the process ends.
- the fixed time tsn is an arbitrary fixed value.
- the determination unit 31 generates a signal for increasing the pressure increase rate and ends.
- the response of the brake when the brake is re-operated by the driver during the ABS control can be improved, and the driver's discomfort can be alleviated.
- FIG. 4A is a correlation diagram of time and deceleration in the embodiment, and shifts to the pressure increasing mode after the pressure reducing mode.
- the deceleration region is divided into six stages G6 to G1, and indicates that the deceleration region G6 has the lowest deceleration and the deceleration region G1 has the highest deceleration.
- the deceleration area is changed from the deceleration area G6 to the deceleration area G5 and the deceleration area G4.
- the vehicle body deceleration dVR is substantially constant in the deceleration region G6, and the vehicle body deceleration dVR is suddenly changed as the vehicle body shifts to the deceleration region G5 and the deceleration region G4.
- FIG. 4B is a correlation diagram of time and speed in the embodiment.
- the vehicle body speed VR decreases as the wheel speed VW decreases.
- FIG. 4C is a correlation diagram of time, brake fluid pressure (CAL pressure), and master cylinder pressure (M / C pressure) in the embodiment. Even if the driver releases the brake operator input, the ABS control continues, and if the driver re-operates the brake operator during the pressure increasing mode, it becomes constant after the master cylinder pressure increases. . On the other hand, with respect to the brake fluid pressure, the pressure increase rate increases step by step, but since the holding time tact at each step is relatively short and the pressure increase amount ⁇ P1 is large, the brake fluid pressure becomes equal to the master cylinder pressure. Time (tc-t0) is shortened.
- the brake pressure of the comparative example increases in a stepwise manner. Since the holding time ⁇ t2 at each stage is long and the pressure increase amount ⁇ P2 is also small, the time (tb ⁇ t0) until the brake fluid pressure becomes equal to the master cylinder pressure becomes relatively long. For this reason, the response of the brake is lowered and the driver feels uncomfortable.
- the amount of increase in the brake fluid pressure is ⁇ P2 ⁇ P1.
- the holding time of the brake fluid pressure is ⁇ t2 ⁇ tact.
- the time until the brake fluid pressure becomes equal to the master cylinder pressure is (tc ⁇ t0) ⁇ (tb ⁇ t0). That is, in the embodiment, compared with a general comparative example, the amount of increase in brake fluid pressure is large and the holding time is short, so the time until the brake fluid pressure becomes equal to the master cylinder pressure is also shortened.
- the amount of increase in the brake fluid pressure is increased by increasing the time for opening the inlet control valve 15 disposed between the master cylinder 12 (see FIG. 1) and the wheel brake 14, and the brake fluid is increased. Reduce the holding time for holding pressure. For this reason, it is possible to appropriately increase the pressure increase rate and improve the responsiveness. Furthermore, since the pressure increase rate is changed stepwise, the pressure increase rate can be appropriately increased without giving the driver a sense of incongruity, and a natural feeling can be achieved.
- Example although the example which provided the brake fluid pressure control apparatus for wheels only in the front wheel was shown, it may provide only in a rear wheel or it may provide in both wheels.
- the control unit 30 and the determination unit 31 are provided separately.
- the functions may be divided internally.
- the operating element 11 is a brake lever.
- the operating element 11 is not limited to this, and the operating element 11 may be a brake pedal.
- the pump 20 is configured by the actuator 22 and the pump unit 21.
- the actuator 22 may be a solenoid and the pump 20 may be a solenoid pump including the solenoid and the pump unit 21.
- the actuator 22 may be a motor.
- the apparatus for acquiring the wheel speed includes the pulsar ring 24 and the wheel speed sensor 25 as constituent elements, but is not limited thereto, and may detect the rotation of the wheel 23 with a gear.
- the present invention is suitable for a brake fluid pressure control device mounted on a motorcycle.
- SYMBOLS 10 Brake hydraulic pressure control apparatus for vehicles, 11 ... Operator, 12 ... Master cylinder (M / C), 14 ... Wheel brake, 15 ... Inlet control valve, 30 ... Control part, 31 ... Determination part, 33 ... Wheel speed Acquiring unit, 35 ... vehicle deceleration calculation means, VW ... wheel speed, dVR ... vehicle deceleration, Gn ... deceleration region, G6 ... deceleration region where vehicle deceleration is below a predetermined threshold value, tsn ... fixed time ( Retention time), tact ... pressure increase time.
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Abstract
Description
圧制御における増圧レートを高くすることができるので、キャリパ側のブレーキ液圧(CAL圧)をマスタシリンダ側の液圧(M/C圧)付近まで素早く近づけることができる。このため、ABS制御中に運転者によってブレーキが再操作された際のブレーキの応答性を向上でき、運転者の違和感を緩和できる。
ABS制御時の減圧状態は、マスタシリンダ12と車輪ブレーキ14の間を遮断する(入口制御弁15が閉)とともに、車輪ブレーキ14とリザーバ13を連通する(出口制御弁16が開)状態である。車輪ブレーキ14に通じる作動液が、出口制御弁16を通ってリザーバ13に流入し、車輪ブレーキ14に作用している作動液圧が減圧される。
制御部30(車両用ブレーキ液圧制御装置10)は、増圧制御では、マスタシリンダ12と車輪ブレーキ14との間を連通しつつ、車輪ブレーキ14とリザーバ13の間を遮断する。具体的には、入口制御弁15が開かれ、出口制御弁16が閉じられる。マスタシリンダ12で発生した液圧により車輪ブレーキ14の作動液が増圧される。
図2に示すように、車輪速度を取得する装置は、車輪速度を検出する車輪速度センサ25と、車輪速度センサ25で検出された車輪速度を取得する車輪速度取得部33とを備えている。
図3に示すように、ABS制御時において判定部31は、ステップ番号(以下、STと記す。)01で、車輪速度取得部33は、車輪速度センサ25からの信号により車輪速度VWを取得する。
ST03で、車体減速度dVWから領減速度領域Gnを取得する。
ST04で、判定部31はABS制御が停止しているか判定し、停止していない場合(ST04:NO)はST05に進み、停止している場合(ST04:YES)は終了する。
ST06で、車体減速度が所定のしきい値以下である減速度領域G6の時間、すなわち減速度が最も出ていない減速度領域G6の時間TimG6を計算する。
ST08で、判定部31は増圧レートを上げる信号を発生し終了する。
図4(a)は実施例における時間と減速度の相関図であり、減圧モードの後に増圧モードへ移行している。例えば減速度領域は、G6~G1の6段階に分かれており、減速度領域G6が最も減速度が低く、減速度領域G1が最も減速度が高いことを示す。減速度領域G6から減速度領域G5、減速度領域G4へと減速度領域が変更されている。車体減速度dVRは、減速度領域G6でほぼ一定であり、減速度領域G5、減速度領域G4へと移行するにつれて、車体減速度dVRが急に変更される。
図5に示されるように、車体減速度が高ければ減速度領域はG1であり、車体減速度が低くなるにつれて減速度領域がG2、G3・・・、G6となることを示す。所定のしきい値は任意の値であり、減速度領域G6は、車体減速度が所定のしきい値以下の領域である。
Claims (4)
- 車輪速度を取得する車輪速度取得部と、前記車輪速度に基づき車体減速度を算出する車体減速度算出手段とを備え、車輪ブレーキに作用するブレーキ液圧の液圧制御可能な車両用ブレーキ液圧制御装置であって、
前記車体減速度が出ていない所定のしきい値以下である状態が一定時間継続したという条件を満たした場合、増圧制御における増圧レートを、前記条件を満たす前よりも高くなるように変更することを特徴とする車両用ブレーキ液圧制御装置。 - 請求項1記載の車両用ブレーキ液圧制御装置において、
前記増圧制御は、ブレーキ液圧の増圧・保持を繰り返す制御であって、
マスタシリンダと前記車輪ブレーキの間に配置された入口制御弁を開ける時間を増大させることで前記ブレーキ液圧の増圧量を増大させるとともに、前記ブレーキ液圧を保持する保持時間を短くすることによって、増圧レートが高くなるように変更することを特徴とする車両用ブレーキ液圧制御装置。 - 請求項1又は請求項2記載の車両用ブレーキ液圧制御装置において、
前記所定のしきい値は、目標車体減速度に基づき設定されることを特徴とする車両用ブレーキ液圧制御装置。 - 請求項1~3のいずれか1項記載の車両用ブレーキ液圧制御装置において、
前記条件を満たした後、段階的に増圧レートが高くなるように変更することを特徴とする車両用ブレーキ液圧制御装置。
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US16/082,831 US10994714B2 (en) | 2016-03-31 | 2017-02-28 | Vehicle brake hydraulic control device |
EP17774021.4A EP3437946B1 (en) | 2016-03-31 | 2017-02-28 | Vehicle brake hydraulic control device |
CA3016426A CA3016426C (en) | 2016-03-31 | 2017-02-28 | Vehicle brake hydraulic control device |
AU2017242181A AU2017242181B2 (en) | 2016-03-31 | 2017-02-28 | Vehicle brake hydraulic control device |
JP2018508830A JP6646729B2 (ja) | 2016-03-31 | 2017-02-28 | 車両用ブレーキ液圧制御装置 |
ES17774021T ES2849957T3 (es) | 2016-03-31 | 2017-02-28 | Dispositivo de control hidráulico del freno de un vehículo |
BR112018069986-1A BR112018069986B1 (pt) | 2016-03-31 | 2017-02-28 | Dispositivo de controle de pressão de fluido de freio para um veículo |
Applications Claiming Priority (2)
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US (1) | US10994714B2 (ja) |
EP (1) | EP3437946B1 (ja) |
JP (1) | JP6646729B2 (ja) |
AU (1) | AU2017242181B2 (ja) |
CA (1) | CA3016426C (ja) |
ES (1) | ES2849957T3 (ja) |
WO (1) | WO2017169476A1 (ja) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH10278765A (ja) * | 1996-09-10 | 1998-10-20 | Denso Corp | 車両用ブレーキ装置 |
JPH1134844A (ja) * | 1997-07-17 | 1999-02-09 | Denso Corp | アンチスキッド制御装置 |
JPH11208434A (ja) * | 1998-01-26 | 1999-08-03 | Aisin Seiki Co Ltd | 車両の制動制御装置 |
JP2007022404A (ja) * | 2005-07-19 | 2007-02-01 | Advics:Kk | アンチスキッド制御装置 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS60128054A (ja) * | 1983-12-13 | 1985-07-08 | Nissan Motor Co Ltd | アンチスキッド制御装置 |
US5368373A (en) * | 1989-10-13 | 1994-11-29 | Lucas Industries Public Limited Company | Method for controlling the brake pressure in an anti-lock brake system of a dual-track vehicle |
JP3456840B2 (ja) * | 1996-07-03 | 2003-10-14 | 日信工業株式会社 | 車両用アンチロックブレーキ制御装置 |
JP3597672B2 (ja) * | 1997-06-05 | 2004-12-08 | 三菱電機株式会社 | アンチスキッドブレーキ制御装置 |
JP4233959B2 (ja) * | 2003-09-03 | 2009-03-04 | 日信工業株式会社 | 車両のアンチロックブレーキ制御装置 |
JP4705519B2 (ja) * | 2005-07-28 | 2011-06-22 | 日信工業株式会社 | 車両用ブレーキ圧制御装置 |
JP2015123842A (ja) * | 2013-12-26 | 2015-07-06 | 日信工業株式会社 | ブレーキシステム |
-
2017
- 2017-02-28 EP EP17774021.4A patent/EP3437946B1/en active Active
- 2017-02-28 US US16/082,831 patent/US10994714B2/en active Active
- 2017-02-28 CA CA3016426A patent/CA3016426C/en active Active
- 2017-02-28 ES ES17774021T patent/ES2849957T3/es active Active
- 2017-02-28 JP JP2018508830A patent/JP6646729B2/ja active Active
- 2017-02-28 WO PCT/JP2017/007927 patent/WO2017169476A1/ja active Application Filing
- 2017-02-28 AU AU2017242181A patent/AU2017242181B2/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10278765A (ja) * | 1996-09-10 | 1998-10-20 | Denso Corp | 車両用ブレーキ装置 |
JPH1134844A (ja) * | 1997-07-17 | 1999-02-09 | Denso Corp | アンチスキッド制御装置 |
JPH11208434A (ja) * | 1998-01-26 | 1999-08-03 | Aisin Seiki Co Ltd | 車両の制動制御装置 |
JP2007022404A (ja) * | 2005-07-19 | 2007-02-01 | Advics:Kk | アンチスキッド制御装置 |
Non-Patent Citations (1)
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See also references of EP3437946A4 * |
Also Published As
Publication number | Publication date |
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EP3437946B1 (en) | 2020-11-18 |
CA3016426C (en) | 2020-09-22 |
CA3016426A1 (en) | 2017-10-05 |
BR112018069986A8 (pt) | 2022-07-05 |
AU2017242181B2 (en) | 2019-06-06 |
EP3437946A4 (en) | 2019-11-06 |
EP3437946A1 (en) | 2019-02-06 |
ES2849957T3 (es) | 2021-08-24 |
JP6646729B2 (ja) | 2020-02-14 |
BR112018069986A2 (pt) | 2019-02-05 |
JPWO2017169476A1 (ja) | 2018-12-20 |
US20190100176A1 (en) | 2019-04-04 |
AU2017242181A1 (en) | 2018-09-13 |
US10994714B2 (en) | 2021-05-04 |
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