WO2005054025A1 - 車両用制動装置 - Google Patents
車両用制動装置 Download PDFInfo
- Publication number
- WO2005054025A1 WO2005054025A1 PCT/JP2004/017679 JP2004017679W WO2005054025A1 WO 2005054025 A1 WO2005054025 A1 WO 2005054025A1 JP 2004017679 W JP2004017679 W JP 2004017679W WO 2005054025 A1 WO2005054025 A1 WO 2005054025A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- braking
- pressure
- vehicle
- valve
- electric machine
- Prior art date
Links
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B60L1/00—Supplying electric power to auxiliary equipment of vehicles
- B60L1/003—Supplying electric power to auxiliary equipment of vehicles to auxiliary motors, e.g. for pumps, compressors
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- B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
- B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
- B60L15/2009—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed for braking
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- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
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- B60T8/52—Torque sensing, i.e. wherein the braking action is controlled by forces producing or tending to produce a twisting or rotating motion on a braked rotating member
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- B60W20/00—Control systems specially adapted for hybrid vehicles
- B60W20/10—Controlling the power contribution of each of the prime movers to meet required power demand
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F16D65/16—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake
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- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
- B60K6/48—Parallel type
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K7/00—Disposition of motor in, or adjacent to, traction wheel
- B60K7/0007—Disposition of motor in, or adjacent to, traction wheel the motor being electric
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- B60W20/00—Control systems specially adapted for hybrid vehicles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F16D2121/00—Type of actuator operation force
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- F16D2127/00—Auxiliary mechanisms
- F16D2127/08—Self-amplifying or de-amplifying mechanisms
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/62—Hybrid vehicles
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
Definitions
- the present invention relates to a vehicle braking device capable of constantly applying the same braking force regardless of a difference in friction coefficient of a braking means when hydraulic braking torque by a hydraulic brake is applied to driving wheels.
- the regenerative braking torque acts directly as a braking force on the wheels, whereas the hydraulic braking torque by the hydraulic brake is applied to, for example, a disc brake.
- This is a mechanism that converts the friction torque between the disc and the pad to work as a braking force, so that even if the fluid pressure is the same, the friction coefficient between the disc and the pad changes (water drops during rainy running). The braking force will change depending on whether it adheres or wears out over a long period of use.
- the present invention has been made in view of the above problem, and in a hydraulic brake, regardless of a change in a friction coefficient between a rotating body and a braking means, a change in a braking force applied to wheels is reduced.
- An object of the present invention is to provide a vehicular braking device that can be suppressed.
- a vehicle braking device including a braking unit that applies a braking force according to a braking hydraulic pressure to a rotating body fixed to wheels.
- a decompression device that applies a reaction force input from the rotating body to the braking device when the braking force is applied, in a direction to reduce the braking fluid pressure.
- the vehicle braking device of the present invention includes a braking unit that applies a braking force according to the braking fluid pressure to the rotating body fixed to the wheel. Since the rotating body force also acts on the reaction force input to the braking means in the direction of reducing the braking fluid pressure, the braking fluid pressure having a magnitude proportional to the reaction force input to the braking means can be reduced. Therefore, when the coefficient of friction between the rotating body and the braking means is a high coefficient of friction and the braking force applied by the braking means to the rotating body is large, the reaction force is also increased, and the braking fluid pressure is reduced accordingly. Becomes larger.
- the friction coefficient between the rotating body and the braking means is a low friction coefficient and the braking force applied to the rotating body by the braking means is small
- the reaction force is also small, and the braking hydraulic pressure is reduced accordingly.
- the magnitude of the braking fluid pressure that is reduced is determined by the magnitude of the reaction force, regardless of the change in the friction coefficient between the rotating body and the braking means, the braking force applied to the wheels is reduced. Changes can be suppressed.
- FIG. 1 is an overall system diagram showing a vehicle braking device according to a first embodiment.
- FIG. 2 is an overall system diagram showing a vehicle braking device according to a second embodiment.
- FIG. 3 is an overall system diagram showing a vehicle braking device according to a third embodiment.
- FIG. 4 is an overall system diagram showing a vehicle braking device according to a fourth embodiment.
- FIG. 5 is an overall system diagram showing a vehicle braking device according to a fifth embodiment.
- FIG. 6 is a block diagram showing a control system of a vehicle braking device according to a fifth embodiment.
- FIG. 7 is a flowchart showing a flow of a motor control operation executed by an integrated control module according to a fifth embodiment.
- FIG. 8 is an overall system diagram showing a vehicle braking device according to a sixth embodiment.
- FIG. 9 is a view showing an anti-power detection mechanism of a vehicle brake system according to a sixth embodiment.
- FIG. 10 is a view showing a relationship characteristic between a reaction force and a load cell detection value and a relationship characteristic between a solenoid current and a load cell detection value in the vehicle braking device of the sixth embodiment.
- FIG. 11 is an overall system diagram showing a vehicle braking device according to a seventh embodiment.
- FIG. 12 is an overall system diagram showing a vehicle braking device according to an eighth embodiment.
- Body side cylinder case (body side member)
- Embodiment 1 the best mode for realizing the vehicle braking device of the present invention will be described based on Embodiment 1 and Embodiment 8 shown in the drawings.
- FIG. 1 is an overall system diagram illustrating a vehicle braking device according to a first embodiment.
- the first embodiment is driven by a regenerative braking torque TBe by a wheel-in-motor type rotary electric machine 1 and a hydraulic braking torque TBp by a disk brake type hydraulic brake 2 (braking means).
- This is a vehicle braking device that applies a braking torque to wheels 3.
- the rotating electrical machine case 4 (braking counterforce detecting means) of the rotating electrical machine 1 is supported by a body-side cylindrical case 5 (body-side member) via a ball 6 so as to be relatively rotatable.
- a master cylinder pressure chamber 7 (required braking fluid pressure chamber), a wheel cylinder pressure chamber 8 and a return pressure chamber 9 are formed in the vehicle body side cylindrical case 5, and the master cylinder pressure chamber 7 and the wheel cylinder pressure chamber 8 are formed.
- An orifice 11 is provided in the communication hydraulic pressure passage 10 of the vehicle, and a wheel cylinder pressure regulating valve 13 (valve means) is provided in a valve hole 12 (communication hydraulic pressure passage) between the wheel cylinder pressure chamber 8 and the return pressure chamber 9. I have.
- the wheel cylinder pressure regulating valve 13 is provided with a regenerative braking torque TBe in the valve opening direction that is adjusted via an operation arm 14 provided in the rotating electric machine case 4 and a hydraulic pressure based on the wheel cylinder pressure Pw.
- a first feedback mechanism 15-1 mechanical feedback mechanism that regulates the wheel cylinder pressure Pw so as to balance the required control torque TB * in the valve closing direction based on the master cylinder pressure Pm is provided. I have.
- the rotating electric machine 1 is a wheel-in motor with a reduction gear of a caliper body type in which a motor M and a reduction gear G are disposed inside a rotation electric machine case 4 fixed to a brake caliper 17 in a driving wheel 16.
- the motor M has a rotor having a motor shaft 18 and a stator fixed to the rotating electric machine case 4
- the speed reducer G has a sun gear fixed to the motor shaft 18 and a rotating electric machine case.
- a ring gear fixed to 4 and a pinion carrier that supports a pinion that meshes with the sun gear and the ring gear.
- a drive wheel 12 together with a brake disc 20 is fixed to a speed reducer output shaft 19 fixed to the pinion carrier.
- the wheel cylinder pressure regulating valve 13 has an end face disposed in the master cylinder pressure chamber 7, is connected to a piston 13a that receives a torque in a valve closing direction when the master cylinder pressure Pm is generated, and is connected to the piston 13a.
- a valve member 13b for opening and closing a valve hole 12 formed in a partition wall between the wheel cylinder pressure chamber 8 and the return pressure chamber 9 is provided.
- the first feedback mechanism 15-1 is provided with a combined torque TBt in the valve opening direction that is applied to the piston 13a via an operating arm 14 provided on the rotary electric machine case 4, and a master cylinder pressure Pm.
- Required braking torque TB * in the valve closing direction based on the product of the effective pressure receiving area of the piston 13a Adjust the wheel cylinder pressure Pw so that
- the synthetic torque TBt is the sum of the regenerative braking torque Tbe and the hydraulic braking torque TBp.
- the regenerative braking torque Tbe is obtained by multiplying the stator reaction force (meaning including the reduction gear reaction force) by the regenerative braking by the motor M and the reduction gear G by the distance from the wheel center point to the operation point of the operation arm 14. Torque.
- the hydraulic braking torque TBp is obtained by multiplying the distance between the working force of the working arm 14 and the caliber force acting on the rotary electric machine case 4 via the brake caliper 17 and the wheel center point force as a reaction force of the wheel cylinder pressure Pw during braking.
- the required braking torque TB * is a torque obtained by multiplying the required braking force, which is the product of the master cylinder pressure Pm and the effective pressure receiving area of the piston 13a, by the distance from the wheel center point to the required braking force acting center point. Note that an elastic member 21 for preventing a tapping sound is interposed between the working arm 14 and the piston 13a.
- the master cylinder pressure chamber 7 has a master cylinder pressure Pm force generated by the master cylinder 24 by the output of the booster 23 when a brake operation is performed on the brake pedal 22 (brake operation means). Guided through 25.
- the wheel cylinder pressure chamber 8 and the wheel cylinder pressure chamber 26 in the brake caliper 17 are connected by a wheel cylinder hydraulic pressure path 27. Further, the return pressure chamber 9 and the reservoir 28 are communicated by a return hydraulic pressure path 29.
- the master cylinder pressure Pm generated by the master cylinder 24 is applied to the master cylinder hydraulic passage 25 ⁇ master cylinder pressure chamber 7 ⁇ communication hydraulic pressure passage 10 ⁇ wheel cylinder pressure chamber 8 ⁇ wheel cylinder.
- the hydraulic pressure passage 27 is guided to the wheel cylinder pressure chamber 26, and the brake disk 20 of the hydraulic brake 2 is pinched to apply a hydraulic braking torque to the drive wheel 3.
- the required braking force due to the product of the master cylinder pressure Pm and the effective pressure receiving area of the piston 13a is controlled from the wheel center point.
- the required braking torque TB * multiplied by the distance to the power action center acts in the valve closing direction, and the wheel force and the wheel force acting on the rotating electric machine case 4 via the brake caliper 17 as a reaction force of the wheel cylinder pressure Pw.
- Hydraulic braking torque TBp which is the center point force multiplied by the distance to the working point of the working arm 14, acts in the valve opening direction to provide the required braking. As long as the torque TB * remains larger than the hydraulic braking torque TBp, the closed state of the wheel cylinder pressure regulating valve 13 is maintained.
- the pressure adjustment operation of the wheel cylinder pressure Pw is performed by an electric feedback control system using an electric signal.
- the required braking force, the regenerative braking force, and the hydraulic braking force are not controlled by the wheel cylinder pressure regulating valve 13.
- This is performed by a mechanical feedback mechanism that replaces the signal force applied to the wheel cylinder pressure control valve. For example, even if an electrical system trouble occurs when all the components are electrically regenerated and the regenerative braking force becomes zero, the wheel cylinder pressure regulator 13
- the braking is switched to hydraulic braking torque only by the automatic mechanical operation that closes the valve, and fail-safe is established even if the hydraulic braking torque is not always kept.
- the cooperative brake control uses the torque TBe as much as possible and compensates for the shortage with the hydraulic braking torque TBp.
- the rotating electric machine 1 is a wheel-in motor with a reduction gear of a caliper body type in which a motor M and a reduction gear G are arranged inside a rotating electric machine case 4 fixed to a brake caliper 17 in a driving wheel 16. Fluctuation of friction coefficient of brake friction material of hydraulic brake 2 The actual braking force including the regenerative braking force and the hydraulic braking force can be fed back to the wheel cylinder pressure regulating valve 13 by one working arm 14 that does not depend. That is, the first feedback mechanism 15-1 is effective when the rotating electric machine 1 is a wheel-in motor type as in the first embodiment.
- the wheel cylinder pressure regulating valve 13 can be constituted by a simple poppet valve, and the reliability of the first feedback mechanism 15-1 is improved. improves.
- a vehicle braking device provided with a braking means for applying a braking force according to a braking fluid pressure to a rotating body fixed to wheels
- the braking means is applied from the rotating body when the braking force is applied.
- Pressure reducing means for applying the reaction force input to the wheel in the direction of reducing the braking hydraulic pressure is provided, so that in the hydraulic brake, regardless of the change in the coefficient of friction between the rotating body and the braking means, it is applied to the wheels. A change in the applied braking force can be suppressed.
- the pressure reducing means has valve means capable of switching between maintaining and reducing the brake fluid pressure, and the pressure input to the brake means in a direction to reduce the brake fluid pressure of the valve means. Since the force is applied, the pressure of the brake fluid can be reduced according to the reaction force input to the braking means by a valve operation for switching between maintaining and reducing the brake fluid pressure.
- the braking reaction detecting means is provided so as to be swingable relative to the vehicle body, and is provided with a braking means so that a reaction force input to the braking means is converted into a swinging motion. Since the braking reaction force detection means is provided integrally, the reaction force input to the braking means can be easily detected by the swinging momentum.
- a driving device (rotating electric machine 1) for applying a driving force to the wheels is provided, and the braking reaction detecting means is provided as a driving device case (rotating electric machine case 4) for housing the rotating electric machine 1. Therefore, it is possible to detect the braking reaction with a simple configuration using the drive case. Wear.
- the rotating electric machine 1 for applying regenerative braking force to the wheels is provided, and the braking reaction detecting means is the rotating electric machine case 4 for housing the rotating electric machine 1, the rotating electric machine case 4
- the braking reaction can be detected with a simple configuration utilizing
- a vehicular braking apparatus that applies a braking torque to the drive wheels 3 by the regenerative braking torque TBe of the rotating electric machine 1 and the hydraulic braking torque TBp of the hydraulic brake 2, wherein the rotating electric machine case 4 of the rotating electric machine 1
- the vehicle body side cylindrical case 5 is supported so as to be rotatable relative to the vehicle body side cylindrical case 5, and the vehicle body side cylindrical case 5 is provided with a required braking hydraulic pressure chamber, a wheel cylinder pressure chamber 8, and a return pressure chamber 9, and the required braking hydraulic pressure is formed.
- An orifice 11 is provided in a communication hydraulic pressure passage 10 between the pressure chamber 8 and the wheel cylinder pressure chamber 8, and a wheel cylinder pressure regulating valve 13 is provided in a communication hydraulic pressure passage between the wheel cylinder pressure chamber 8 and the return pressure chamber 9.
- the means includes a valve opening direction regenerative braking torque TBe applied to the wheel cylinder pressure regulating valve 13 via an operating arm 14 provided on the rotary electric machine case 4, and a valve opening direction based on the wheel cylinder pressure Pw.
- Liquid Summation with braking torque TBp Mechanical feedback mechanism that adjusts wheel cylinder pressure Pw to balance required braking torque TB * in valve closing direction based on required braking fluid pressure.
- the rotating electric machine 1 is a caliper-type reduction gear in which a motor M and a reduction gear G are arranged inside a rotation electric machine case 4 fixed to a brake carrier 17 in a driving wheel 16.
- the wheel cylinder pressure regulating valve 13 has an end face disposed in the required braking fluid pressure chamber, and receives a piston 13a that receives torque in a valve closing direction when the required braking fluid pressure is generated, and a piston 13a.
- a valve member 13b connected to and opening and closing a valve hole 12 formed in a partition wall between the wheel cylinder pressure chamber 8 and the return pressure chamber 9.
- the mechanical system feedback mechanism includes the rotary electric machine case 1.
- the required braking torque TB in the valve closing direction based on the product of the required valve opening direction torque applied to the piston 13a through the working arm 14 provided on the piston 13a and the required braking fluid pressure and the effective pressure receiving area of the piston 13a.
- the highly accurate actual braking force can be feed knocked to the wheel cylinder pressure regulating valve 13.
- the wheel cylinder pressure regulating valve 13 Since the required brake fluid pressure chamber is the master cylinder pressure chamber 7 that guides the master cylinder pressure Pm generated by the master cylinder 24 by the brake operation on the brake pedal 22, the wheel cylinder pressure regulating valve 13 is It can be configured with a simple poppet valve, and the reliability of the first feedback mechanism 15-1 in a severe operating environment is improved.
- the second embodiment is an effective example in a system including a vehicle-mounted motor that reduces unsprung load.
- the brake caliper 17 in the driving wheel 16 and the rotating electric machine case 4 are arranged in a separated state.
- This is an on-board motor with a reduction gear of a caliber separation type in which a motor M and a reduction gear G are arranged in the rotary electric machine case 4.
- the p-on carrier of the speed reducer G and the speed reducer output shaft 19 are connected by a drive shaft 31 having universal joints 30 at both ends.
- the wheel cylinder pressure regulating valve 13 has an end face disposed in the master cylinder pressure chamber 7 and receives a torque in the valve closing direction when the master cylinder pressure PM is generated. And a valve member 13b connected to the first piston 13a and opening and closing a valve hole 12 formed in a partition wall between the first wheel cylinder pressure chamber 8 and the return pressure chamber 9.
- a second wheel cylinder pressure chamber 33 having a second piston 32 is formed in the vehicle body side cylindrical case 5 at a position circumferentially separated from the wheel cylinder pressure regulating valve 13, and
- the electric case 4 is provided with a second working arm 35 that receives torque from the piston rod 34 of the second piston 32 in the valve opening direction when the wheel cylinder pressure Pw is generated.
- the mechanical system feedback mechanism includes a torque in a valve opening direction applied to the first piston 13a via a first working arm 14 provided on the rotary electric machine case 4, a master cylinder pressure Pm, The required braking torque in the valve closing direction based on the product of the effective pressure receiving area of the first piston 13a.
- the second feedback mechanism 15-2 adjusts the wheel cylinder pressure Pw so as to balance the torque TB *.
- Other configurations are the same as those of the first embodiment, and the corresponding components are denoted by the same reference numerals and description thereof will be omitted.
- the hydraulic braking force is obtained by the caliber force
- the second feedback mechanism 15-2 is used.
- the only difference is that the rotary electric machine 1 is obtained by multiplying the wheel cylinder pressure Pw and the effective pressure receiving area of the second piston 32 by using the in-vehicle motor as the rotating electric machine 1.
- the vehicle braking device of the second embodiment has the following effects in addition to the effects of (1)-(7) and (9) of the first embodiment.
- the brake caliper 17 in the drive wheel 16 and the rotating electric machine case 4 are arranged in a separated state, and the motor M and the reduction gear G are arranged in the rotating electric machine case 4.
- An on-board motor with a reduction gear of a caliper separation type, the wheel cylinder pressure regulating valve 13 has an end face disposed in the master cylinder pressure chamber 7 and receives a torque in the valve closing direction when the master cylinder pressure PM is generated.
- a second wheel cylinder pressure chamber 33 having a second piston 32 is formed in the body side cylindrical case 5 at a position circumferentially away from the wheel cylinder pressure regulating valve 13.
- the second working arm 35 is provided with a torque from the piston rod 34 of the second button 32 in the valve opening direction, and the mechanical feedback mechanism connects the first working arm 14 provided on the rotary electric machine case 4 to the second working arm 35.
- the third embodiment is, like the second embodiment, an effective example of a system provided with an in-vehicle motor that reduces the unsprung load.
- the brake caliper 17 in the driving wheel 16 and the rotating electric machine case 4 are arranged in a separated state.
- This is an on-board motor with a reduction gear of a caliber separation type in which a motor M and a reduction gear G are arranged in the rotary electric machine case 4.
- the p-on carrier of the speed reducer G and the speed reducer output shaft 19 are connected by a drive shaft 31 having universal joints 30 at both ends.
- the wheel cylinder pressure regulating valve 13 has an end face disposed in the master cylinder pressure chamber 7, receives a torque in the valve closing direction when the master cylinder pressure PM is generated, and the wheel cylinder pressure chamber 8.
- the second piston 13c receives torque in the valve opening direction when the wheel cylinder pressure Pw is generated, and is connected to the pistons 13a, 13c to form a first wheel cylinder pressure chamber 8 and a return pressure chamber 9 And a valve member 13b for opening and closing the valve hole 12 formed in the partition wall.
- the mechanical system feedback mechanism includes a regenerative braking torque TBe in the valve opening direction that is applied to the first piston 13a via a first working arm 14 provided in the rotating electric machine case 4, and a wheel cylinder pressure. Pw and the sum of the hydraulic braking torque TBp in the valve opening direction based on the product of the effective pressure receiving area of the second piston 13c and the valve closing based on the product of the master cylinder hydraulic pressure Pm and the effective pressure receiving area of the first piston 13a.
- the third feedback mechanism 15-3 adjusts the wheel cylinder pressure Pw so that the required braking torque TB * in the direction is balanced.
- Other configurations are the same as those of the first embodiment, and the corresponding components are denoted by the same reference numerals and description thereof will be omitted.
- the hydraulic braking torque TBp in the valve opening direction is
- wheel cylinder pressure Pw and the effective pressure receiving area of the second piston 32 provided separately from the wheel cylinder pressure regulating valve 13 are obtained by multiplying them, the hydraulic braking torque TBp in the valve opening direction is obtained.
- Wheel cylinder pressure Pw and wheel cylinder pressure regulating valve 13 The only difference is that the effective pressure receiving area of the second piston 13c provided is obtained by a force obtained by multiplying the effective pressure receiving area by the effective pressure receiving area.
- the vehicle braking device of the third embodiment has the following effects in addition to the effects (1)-(7) of the first embodiment.
- a brake carrier 17 in a driving wheel 16 and a rotating electric machine case 4 are arranged in a separated state, and a motor M and a reduction gear G are disposed in the rotating electric machine case 4.
- the wheel cylinder pressure regulating valve 13 has an end face disposed in the master cylinder pressure chamber 7 and receives a torque in the valve closing direction when the master cylinder pressure PM is generated.
- An end face is arranged in one piston 13a, the wheel cylinder pressure chamber 8 and receives a torque in the valve opening direction when the wheel cylinder pressure Pw is generated, and a second piston 13c is connected to the two pistons 13a and 13c.
- a valve member 13b for opening and closing a valve hole 12 formed in a partition wall between the wheel cylinder pressure chamber 8 and the return pressure chamber 9, and the mechanical system feedback mechanism is provided in the rotary electric machine case 4.
- a third feedback mechanism that regulates the wheel cylinder pressure Pw so that the sum of TBp and the required braking torque TB * in the valve closing direction based on the product of the master cylinder hydraulic pressure Pm and the effective pressure receiving area of the first piston 13a is balanced.
- the regenerative braking force and hydraulic braking force do not require the use of separate pistons as in the second embodiment, while using the rotating electric machine 1 as an in-vehicle motor that reduces the unsprung load and facilitates suspension setting.
- the actual braking force including the above can be fed back to the wheel cylinder pressure adjusting valve 13.
- the required brake fluid pressure is replaced with the master cylinder pressure Pm of the first and second embodiments, and an anti-lock 'braking' system (hereinafter abbreviated as “ABS”) provided downstream of the master cylinder.
- ABS anti-lock 'braking' system
- the required braking hydraulic chamber is located downstream of the master cylinder 24.
- An ABS brake pressure chamber 37 for guiding the ABS brake pressure PABS from the provided ABS Fig. 4 shows the ABS hydraulic pressure source for one wheel excluding the control valve etc.).
- the ABS hydraulic pressure source for one wheel includes a reservoir 38, a first check valve 39, an oil pump 40, and a second check valve 41, and The suction side of the pump 40 and the return pressure chamber 9 are communicated via the return hydraulic pressure path 29, and the discharge side of the oil pump 40 is connected to the ABS brake pressure oil path 42.
- an accumulator 38 for accumulating brake fluid pressure a first check ball valve 41, a hydraulic pump 40 for discharging high-pressure brake fluid, and a second check ball valve 39, a second solenoid valve 43 for producing ABS brake hydraulic pressure PABS, and an ABS brake hydraulic passage 42 connected downstream of the master cylinder passage 25.
- the master cylinder pressure passage 25 and the solenoid valve 43 communicate with each other via a supply passage 42a, and the solenoid valve 43 and the return passage 29 communicate with each other via a discharge charge passage 42b.
- the return passage 29 communicates the accumulator 38 with the return chamber 9.
- the first check valve 41 allows the brake fluid to flow only in the direction of the force from the hydraulic pump 40 to the second solenoid valve 43, and the second check valve 39 only allows the direction of the force from the accumulator 38 to the hydraulic pump 40. Allow brake fluid flow.
- the second solenoid valve 43 is switched in a plurality of modes.In the normal mode, the master cylinder pressure Pm is transmitted from the master cylinder pressure passage 25 to the ABS brake hydraulic pressure chamber 37, and in the pressure increase mode, the ABS hydraulic pressure PABS is The pressure increases and is supplied from the hydraulic pump 40 to the ABS brake hydraulic chamber 37.In the hydraulic pressure holding mode, the ABS hydraulic pressure PABS in the wheel cylinder ABS hydraulic chamber 38 is held, and in the depressurizing mode, the wheel cylinder ABS hydraulic pressure is maintained. The ABS hydraulic pressure PABS in the pressure chamber 38 is reduced. Other configurations are the same as in the first embodiment.
- the oil released to the return pressure chamber 9 by the pressure adjusting operation by the wheel cylinder pressure adjusting valve 13 passes through the return hydraulic pressure passage 29.
- the other operation is the same as that of the first embodiment by replacing the master cylinder pressure Pm with the ABS brake pressure PABS, and thus the description is omitted.
- the required brake fluid pressure chamber is the ABS brake pressure chamber 37 provided downstream of the master cylinder 24 for guiding the ABS brake pressure PABS from the ABS
- the APS hydraulic pressure source is used as a return pump.
- the oil pump 40 can be used in common, and a configuration without a separate pump is possible.
- the fifth embodiment is an example in which the regenerative braking is stopped during the operation of the ABS, so that the ABS can be safely applied.
- the ABS provided downstream of the master cylinder 24 includes a pressure increasing solenoid valve 43a and a pressure increasing solenoid valve in addition to the ABS hydraulic pressure source.
- a solenoid valve 43 by a pressure reducing solenoid valve 43b and a third check valve 44 are provided.
- the software configuration of the ABS system includes an ABS controller 50, an integrated controller module 51, a motor controller 52, and a notter controller module unit 53. Having.
- the integrated control module 51 includes a brake depression force signal from a brake depression force sensor 57, an accelerator depression amount signal from an accelerator depression amount sensor 58, a vehicle speed signal and an ABS signal from the ABS controller 50, and a battery.
- the control unit 53 receives the knowledge state signal from the control unit 53 and outputs a motor torque signal to the motor controller 52.
- the motor controller 52 transmits a motor torque signal from the integrated control module 51. And a motor status signal from the motor M, and outputs a motor drive command to the inverter 60 using the notch 59 as a DC power supply.
- the power and regeneration of the three-phase AC motor M are controlled according to a motor drive command from the inverter 55.
- the ABS system differs from the fourth embodiment in the following points. That is, the master cylinder passage 25 and the ABS hydraulic pressure passage 42 are communicated via the shut-off valve 46 and the third check valve 47.
- the shut-off valve 46 is opened when the ABS system does not operate, and communicates the master cylinder hydraulic passage 25 with the ABS hydraulic chamber 37 formed in the vehicle body side cylindrical case 5 to operate the ABS system. In some cases, the communication is interrupted.
- the third check valve 47 allows the flow of the brake fluid only in the direction of the force from the master cylinder hydraulic pressure passage 25 to the fourth check valve 44.
- the fourth check valve 44 allows the flow of the brake fluid only in the direction of the force from the shut-off valve 46 to the ABS hydraulic pressure chamber 37.
- a hydraulic pressure increasing solenoid valve 45a is provided in parallel with the fourth check valve 44 to increase the ABS hydraulic pressure PABS supplied to the ABS hydraulic chamber 8, and a hydraulic pressure reducing solenoid valve 45b is provided to increase the ABS hydraulic pressure.
- the pressure chamber 37 is also designed to reduce the ABS brake fluid pressure PABS.
- the hydraulic pressure reducing solenoid valve 45b is connected to a return passage 29 that connects the return chamber 9 and the accumulator 38.
- Other configurations are the same as in the fourth embodiment.
- the shut-off valve 46 shuts off the connection between the master cylinder passage 25 and the ABS hydraulic passage 42, and the hydraulic pump 40 supplies hydraulic fluid to the hydraulic pressure increasing solenoid valve 45a, thereby turning on the ABS system. Let it work. During this ABS operation, the hydraulic pressure increasing solenoid valve 45a and the hydraulic pressure reducing solenoid valve 45b raise, hold, and reduce the ABS hydraulic pressure PABS supplied to the ABS hydraulic chamber 37 according to the condition of the wheels. I do.
- the other components in FIG. 5 are the same as those in the first embodiment, and the corresponding components are denoted by the same reference numerals and description thereof will be omitted. Next, the operation will be described.
- FIG. 7 is a flowchart showing a flow of the motor control operation executed by the integrated control module 51. Each step will be described below (braking control means).
- step S 1 a brake depression force signal from the brake depression force sensor 57, an accelerator depression amount signal from the accelerator depression amount sensor 58, a vehicle speed signal from the ABS controller 50, and a battery from the nottery control unit 53 And a motor torque signal to be output to the motor controller 52.
- step S2 it is determined whether or not the ABS signal from the ABS controller 50 is ON. If YES, the process proceeds to step S3, and if NO, the process proceeds to step S4.
- step S3 the motor torque based on the output motor torque signal is set to zero, and the routine goes to step S4.
- step S4 when the ABS signal from the ABS controller 50 is OFF, a normal motor torque signal is output to the motor controller 52, and when the ABS signal from the ABS controller 50 is ON, the motor controller 52 A motor torque signal with zero motor torque is output to.
- step Sl the flow proceeds from step Sl to step S2 to step S3 to step S4 in the flowchart of FIG. 7, and in step S4, the motor torque signal of zero motor torque, that is, the regenerative braking by the motor M is stopped. Is done.
- the braking control means for stopping the regenerative braking by the motor M is provided at the time of the ABS operation, even if the tire lock at the time of the ABS operation is caused by the electric braking torque, the ABS can be safely released. Can be effective.
- the sixth embodiment is an example in which an electrical feedback circuit that electrically detects the braking reaction force and controls a solenoid pressure reducing valve that reduces the brake fluid pressure.
- the braking force detecting means is installed at a position between the rotating electrical machine case 4 and the vehicle body side cylindrical case 5, and the brake caliper is provided.
- a load cell 70 torque sensor that electrically detects the reaction force of the hydraulic braking force input to 17 is used.
- the motor M and the speed reducer G are arranged inside the rotating electric machine case 4 fixed to the brake calipers 17 in the drive wheel, as in the first embodiment. It is a wheel-in motor with a reduction gear of a caliper type.
- the pressure reducing means is an electric feedback circuit for controlling a solenoid pressure reducing valve 71 (valve means) for reducing the brake fluid pressure in accordance with the torque detection value from the load cell 70.
- the electric feedback circuit includes a wheel cylinder hydraulic pressure path 27 that guides the ABS brake pressure from the anti-locking / braking system that is provided downstream of the master cylinder 24 to the wheel cylinder via the ABS brake pressure oil path 42.
- a solenoid pressure reducing valve 71 is provided between the return hydraulic pressure line 29 connected to the pump suction side of the antilock braking system, and the solenoid pressure reducing valve 71 is operated in accordance with a torque detection value from the load cell 70. Control.
- An orifice 72 for separating the ABS brake pressure P1 (original pressure) and the wheel cylinder pressure P2 (the pressure reduced by the load cell detection value) is provided between the ABS brake pressure oil passage 42 and the wheel cylinder pressure passage 27. Is provided.
- the solenoid pressure reducing valve 71 is a valve that switches between a shut-off position and a communication position.
- the oil pressure and the panel force due to the ABS brake pressure P1 act on the valve spool in the shut-off direction.
- the hydraulic pressure and the solenoid force due to the wheel cylinder fluid pressure P2 act in the direction in which the valve operates, and the valve operates by the balance of these forces.
- Other configurations are the same as those of the first embodiment and the third and fourth embodiments, and the corresponding components are denoted by the same reference numerals and description thereof will be omitted.
- the operation will be described.
- the regenerative braking torque input to the rotary electric machine case 4 by the load cell 70 in the wheel-in motor type rotary electric machine of the first embodiment is described.
- the brake fluid pressure is reduced by solenoid current control for the pressure reducing valve 71.
- a load cell detection value is output as shown in FIG. 10 (a) according to the reaction force input from the brake disc 20 to the brake caliper 17, and the load cell detection value is input.
- the controller outside the figure outputs a solenoid current corresponding to the load cell detection value to the solenoid pressure reducing valve 71 as shown in FIG. Therefore, at the start of the brake operation, the solenoid pressure reducing valve 71 maintains the shut-off position due to the relationship of the ABS brake pressure Pl> the wheel cylinder fluid pressure P2, and thereafter, the wheel cylinder fluid pressure P2 increases, and the ABS brake pressure is increased.
- the following effects can be obtained in addition to the effects (1) and (2) of the first embodiment.
- the braking reaction detecting means is a load cell 70 for electrically detecting the reaction force of the hydraulic braking force input to the brake carrier 17, and the pressure reducing means is a load cell from the load cell 70. Since this is an electrical feedback circuit that controls the solenoid pressure reducing valve 71 that reduces the brake fluid pressure in accordance with the torque detection value, electrical control is performed by the valve operation of the solenoid pressure reducing valve 71 that switches between maintaining and reducing the brake fluid pressure. Pressure reduction control of the brake fluid pressure can be performed based on the detection of the power reaction.
- the rotating electric machine 1 is a caliper-type reduction gear in which a motor M and a reduction gear G are arranged inside a rotation electric machine case 4 fixed to a brake carrier 17 in a driving wheel.
- a wheel-in motor with an anti-lock brake system provided downstream of the master cylinder 24, a wheel cylinder hydraulic pressure path 27 for guiding ABS brake pressure to the wheel cylinder, and an anti-lock
- a braking pressure reducing valve 71 is provided between the braking fluid and the return hydraulic pressure passage 29 connected to the pump suction side of the system, and the solenoid pressure reducing valve 71 is controlled in accordance with a torque detection value from the load cell 70.
- high-precision cooperative brake control that improves the energy regeneration rate without being affected by the electric regeneration state is easily performed by electric control based on the braking reaction force. Can be achieved.
- the seventh embodiment is basically the same as the sixth embodiment in that the force is the same as that of the sixth embodiment.
- the sixth embodiment is an example of application to a wheel-in motor with a reduction gear of a caliper type, while This is an example of application to an in-vehicle motor with a speed gear.
- the rotating electric machine 1 is configured such that the brake carrier 17 in the drive wheel and the rotating electric machine case 4 are arranged separately, and the motor M and the reduction gear G is an on-board motor with a caliber-separated type reduction gear, and the electric feedback circuit guides ABS brake pressure from the anti-lock brake system provided downstream of the master cylinder 24 to the wheel cylinder.
- a solenoid pressure reducing valve 71 is provided between the wheel cylinder hydraulic pressure line 27 and the return hydraulic pressure line 29 connected to the pump suction side of the antilock / braking system, and responds to the torque detection value from the load cell 70.
- the solenoid pressure reducing valve is controlled. Note that other configurations and operations are the same as those in the sixth embodiment, and a description thereof will not be repeated.
- the following effects can be obtained by adding the effects of (1) and (2) of the first embodiment and the effect of (14) of the sixth embodiment. .
- the rotary electric machine 1 has a brake caliper 17 in the drive wheel and the rotary electric machine case 4 arranged in a separated state, and a motor M and a speed reducer G arranged in the rotary electric machine case 4.
- This is an in-vehicle motor with a speed reducer of the river separation type, and the electric feedback circuit includes an anti-lock 'braking' system provided downstream of the master cylinder 24 and a wheel system.
- a solenoid pressure reducing valve 71 is provided between the wheel cylinder hydraulic pressure line 27 that guides the ABS brake pressure to the Linda and the return hydraulic pressure line 29 that connects to the pump suction side of the antilock 'braking' system.
- a vehicle equipped with a vehicle-mounted motor with a caliber-separated reduction gear is highly accurate to improve the energy regeneration rate without being affected by the electric regeneration state.
- Cooperative brake control can be easily achieved by electric control based on braking reaction force.
- Example 8 is an example in which the rotating electric machine is omitted in Example 1 and only the starting device is provided on the wheels.
- a disk brake type hydraulic brake 2 (braking means) for applying a hydraulic braking force to the wheels is provided.
- the braking force detecting means is a caliper member 17a provided integrally with the brake carrier 17 of the hydraulic brake 2.
- Other configurations are the same as those of the first embodiment, and the corresponding components are denoted by the same reference numerals and description thereof will be omitted.
- the braking force Fbra is
- ⁇ is a coefficient of friction between the disk and the pad.
- Embodiment 1 in Embodiment 5, in the fifth embodiment, an example in which an orifice having a fixed opening area is provided in the communication hydraulic pressure path between the required braking hydraulic pressure chamber and the wheel cylinder pressure chamber, for example, the required braking hydraulic pressure and the wheel
- an orifice may be used, or a hydraulic pressure path that directly connects the required braking fluid pressure and the wheel cylinder pressure and a communication fluid pressure path that has a fixed orifice may be provided in parallel to reduce the required braking fluid pressure and the wheel cylinder pressure.
- a mechanically controlled on-off valve may be provided in the directly connected hydraulic path to achieve both the initial braking response and the wheel cylinder pressure regulation performance.
- the brake torque reaction force acting on the brake caliper 17 by the piezoelectric element as in the sixth and seventh embodiments is reduced. Detection may be performed to reduce the reaction force by using a solenoid pressure reducing valve.
- the hydraulic brake is not limited to the disk type, but may be a drum brake type.
- the vehicle braking device of the present invention is applied to an electric vehicle, a fuel cell vehicle, a hybrid vehicle, or the like, in which a required braking force is obtained by the sum of a hydraulic braking force and a regenerative braking force.
- the present invention can be applied to an engine car having only a hydraulic brake on wheels.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Power Engineering (AREA)
- Combustion & Propulsion (AREA)
- Chemical & Material Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Automation & Control Theory (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Regulating Braking Force (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005515916A JP4816085B2 (ja) | 2003-12-01 | 2004-11-29 | 車両用制動装置 |
US10/581,454 US8042883B2 (en) | 2003-12-01 | 2004-11-29 | Braking device for vehicle |
EP04819795.8A EP1695883B1 (en) | 2003-12-01 | 2004-11-29 | Braking device for vehicle |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003-402172 | 2003-12-01 | ||
JP2003402172 | 2003-12-01 |
Publications (1)
Publication Number | Publication Date |
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WO2005054025A1 true WO2005054025A1 (ja) | 2005-06-16 |
Family
ID=34650005
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/017679 WO2005054025A1 (ja) | 2003-12-01 | 2004-11-29 | 車両用制動装置 |
Country Status (4)
Country | Link |
---|---|
US (1) | US8042883B2 (ja) |
EP (1) | EP1695883B1 (ja) |
JP (1) | JP4816085B2 (ja) |
WO (1) | WO2005054025A1 (ja) |
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JP2008120220A (ja) * | 2006-11-10 | 2008-05-29 | Toyota Motor Corp | 車両の回生/摩擦協調型制動制御装置 |
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CN103287248A (zh) * | 2013-04-28 | 2013-09-11 | 淄博正邦知识产权企划有限公司 | 一种能充分提升续航和刹车性能的电动汽车 |
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JP4758852B2 (ja) * | 2006-08-29 | 2011-08-31 | 本田技研工業株式会社 | ホイール回転装置のブレーキ構造 |
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DE102019209529B4 (de) * | 2019-06-28 | 2021-05-06 | Continental Teves Ag & Co. Ohg | Lamellenbremse für ein drehbares Element |
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US20230031252A1 (en) * | 2021-08-01 | 2023-02-02 | Vanderhall Motor Works, Inc. | Electric vehicle with combined motor and brake units |
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Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008120220A (ja) * | 2006-11-10 | 2008-05-29 | Toyota Motor Corp | 車両の回生/摩擦協調型制動制御装置 |
KR101261914B1 (ko) * | 2011-01-31 | 2013-05-08 | 현대자동차주식회사 | Abs 제동안정성 향상을 위한 전기자동차 구동계의 마찰력 생성 장치 |
CN103287248A (zh) * | 2013-04-28 | 2013-09-11 | 淄博正邦知识产权企划有限公司 | 一种能充分提升续航和刹车性能的电动汽车 |
CN103287248B (zh) * | 2013-04-28 | 2015-07-15 | 淄博正邦知识产权企划有限公司 | 一种能充分提升续航和刹车性能的电动汽车 |
CN110566604A (zh) * | 2019-09-23 | 2019-12-13 | 陕西法士特齿轮有限责任公司 | 一种缓速器主循环系统 |
CN110566604B (zh) * | 2019-09-23 | 2024-05-14 | 陕西法士特齿轮有限责任公司 | 一种缓速器主循环系统 |
CN113716025A (zh) * | 2021-08-30 | 2021-11-30 | 西安微电子技术研究所 | 一种无人机电静液刹车控制装置及动态保压方法 |
CN113716025B (zh) * | 2021-08-30 | 2023-05-16 | 西安微电子技术研究所 | 一种无人机电静液刹车控制装置及动态保压方法 |
Also Published As
Publication number | Publication date |
---|---|
EP1695883A1 (en) | 2006-08-30 |
JPWO2005054025A1 (ja) | 2007-06-28 |
JP4816085B2 (ja) | 2011-11-16 |
EP1695883B1 (en) | 2013-09-04 |
EP1695883A4 (en) | 2010-03-24 |
US20070247001A1 (en) | 2007-10-25 |
US8042883B2 (en) | 2011-10-25 |
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