Classifications

• • 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
  • B60T1/00—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles
  • B60T1/02—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels
  • B60T1/10—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels by utilising wheel movement for accumulating energy, e.g. driving air compressors
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
  • B60L7/00—Electrodynamic brake systems for vehicles in general
  • B60L7/10—Dynamic electric regenerative braking
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
  • B60L7/00—Electrodynamic brake systems for vehicles in general
  • B60L7/24—Electrodynamic brake systems for vehicles in general with additional mechanical or electromagnetic braking
  • B60L7/26—Controlling the braking effect
• • 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
  • 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
  • B60T13/10—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 with fluid assistance, drive, or release
  • B60T13/58—Combined or convertible systems
  • B60T13/585—Combined or convertible systems comprising friction brakes and retarders
  • B60T13/586—Combined or convertible systems comprising friction brakes and retarders the retarders being of the electric type
• • 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
  • B60T8/1701—Braking or traction control means specially adapted for particular types of vehicles
  • B60T8/1706—Braking or traction control means specially adapted for particular types of vehicles for single-track vehicles, e.g. motorcycles
• • 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
• • 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
  • B60T8/26—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force characterised by producing differential braking between front and rear wheels
  • B60T8/261—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force characterised by producing differential braking between front and rear wheels specially adapted for use in motorcycles
• • 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
  • B60T8/26—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force characterised by producing differential braking between front and rear wheels
  • B60T8/266—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force characterised by producing differential braking between front and rear wheels using valves or actuators with external control means
  • B60T8/267—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force characterised by producing differential braking between front and rear wheels using valves or actuators with external control means for hybrid systems with different kind of brakes on different axles
• • 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
  • B60T8/321—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 deceleration
  • B60T8/3225—Systems specially adapted for single-track vehicles, e.g. motorcycles
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • B62L—BRAKES SPECIALLY ADAPTED FOR CYCLES
  • B62L3/00—Brake-actuating mechanisms; Arrangements thereof
  • B62L3/02—Brake-actuating mechanisms; Arrangements thereof for control by a hand lever
  • B62L3/023—Brake-actuating mechanisms; Arrangements thereof for control by a hand lever acting on fluid pressure systems
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • B62L—BRAKES SPECIALLY ADAPTED FOR CYCLES
  • B62L3/00—Brake-actuating mechanisms; Arrangements thereof
  • B62L3/08—Mechanisms specially adapted for braking more than one wheel
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
  • F16D61/00—Brakes with means for making the energy absorbed available for use
• • 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
  • B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
  • B60T17/18—Safety devices; Monitoring
  • B60T17/22—Devices for monitoring or checking brake systems; Signal devices
• • 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
  • B60T2270/00—Further aspects of brake control systems not otherwise provided for
  • B60T2270/60—Regenerative braking
  • B60T2270/604—Merging friction therewith; Adjusting their repartition
• • 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
  • B60T2270/00—Further aspects of brake control systems not otherwise provided for
  • B60T2270/82—Brake-by-Wire, EHB
• • 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
  • B60T7/00—Brake-action initiating means
  • B60T7/02—Brake-action initiating means for personal initiation
  • B60T7/08—Brake-action initiating means for personal initiation hand actuated
• • 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
  • B60T7/00—Brake-action initiating means
  • B60T7/02—Brake-action initiating means for personal initiation
  • B60T7/08—Brake-action initiating means for personal initiation hand actuated
  • B60T7/10—Disposition of hand control
  • B60T7/102—Disposition of hand control by means of a tilting lever
• • 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
  • B60T8/88—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 with failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means
  • B60T8/92—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 with failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means automatically taking corrective action

Definitions

• a brake system for a saddle-ride type vehicle there has been, for example, a brake system for a motorcycle whose rear wheel is driven by an electric motor, which is configured to include a regenerative braking mechanism that applies regenerative torque to the rear wheel by making the electric motor function as a generator due to rotation of the rear wheel, and a friction brake mechanism that generates a frictional force on the front wheel in response to operation of the brake lever by the rider to brake the front wheel (see, for example, Patent Document 1).
• the regenerative braking mechanism functions as a generator by inputting the rotational force of the rear wheels to the rotating shaft of the electric motor, and the rear wheels of the saddle-riding vehicle are braked by the regenerative torque generated during power generation. Therefore, for example, when the rotational speed of the rear wheels to which the electric motor is connected is low or when the rotation of the rear wheels is stopped, the regenerative braking force that the regenerative braking mechanism can generate may be insufficient relative to the target value.
• FIG. 1 A diagram for explaining a saddle-type vehicle of embodiment 1.
• FIG. 1 A diagram for explaining the brake system of embodiment 1.
• FIG. 3j A diagram for explaining the hydraulic pressure adjusting unit of embodiment 1.
• FIG. 4j A diagram for explaining the system configuration of the brake system of embodiment 1.
• FIG. 5j A diagram for explaining the brake system of embodiment 2.
• a first brake fluid pressure sensor 82 for detecting the pressure of brake fluid in master cylinder 23 is provided in an area of main fluid path 25c closer to master cylinder 23 than switching valve 38a, and a second brake fluid pressure sensor 83 for detecting the pressure of brake fluid in wheel cylinder 27a is provided in an area of main fluid path 25c closer to wheel cylinder 27a than inlet valve 32.
• the pump 35b is driven by a motor 36 common to the pump 35a.
• the first control unit 61 outputs a command signal corresponding to the target braking force to be generated on the front wheels 3 to the drivers of the inlet valve 32, the release valve 33, the switching valve 38a, the booster valve 39, and the motor 36 by wire or wirelessly.
• the second control unit 62 outputs a command signal corresponding to the target braking force to be generated on the rear wheels 4 to the drivers of the relief valve 38b and the motor 36, and a control device that controls the power to charge the power storage device by wire or wirelessly.
• the rear wheel rotation speed sensor 91 detects the rotation speed of the rear wheel 4.
• the rear wheel rotation speed sensor 91 is held by the body 1, for example.
• the rear wheel rotation speed sensor 91 may detect another physical quantity that can be substantially converted into the rotation speed of the rear wheel 4.
• the fluid pressure regulating unit 30 may be configured to include only either the first brake fluid pressure sensor 82 or the second brake fluid pressure sensor 83, for example, the fluid pressure regulating unit 30 may be configured to include only the first brake fluid pressure sensor 82 and estimate the fluid pressure of the brake fluid in the wheel cylinder 27a based on the fluid pressure detected by the first brake fluid pressure sensor 82 or another physical quantity that can be substantially converted into the fluid pressure of the brake fluid in the master cylinder 23, for example, the fluid pressure regulating unit 30 may be configured to include only the second brake fluid pressure sensor 83, The hydraulic pressure or wheel cylinder pressure detected by the second brake hydraulic pressure sensor 83 Alternatively, the hydraulic pressure regulating unit 30 may be configured not to include both the first brake hydraulic pressure sensor 82 and the second brake hydraulic pressure sensor 83, but to estimate the hydraulic pressure of the brake fluid in the wheel cylinder 27 a based on another physical quantity that can be substantially converted into the hydraulic pressure of the brake fluid in the master cylinder 27 a, and may be configured to estimate the hydraulic pressure of the brake fluid in the master cylinder
• the first control unit 61 and the second control unit 62 are housed in the housing 37 of the hydraulic pressure adjustment unit 30 and are unitized with the hydraulic pressure adjustment mechanism (e.g., the inlet valve 32, the release valve 33, the motor 36, the switching valve 38a, the booster valve 39, etc.).
• the hydraulic pressure adjustment mechanism e.g., the inlet valve 32, the release valve 33, the motor 36, the switching valve 38a, the booster valve 39, etc.
• the control device 60 acquires, for example, the braking force requested by the rider based on the amount of operation of the operation element 11 (hereinafter, sometimes referred to as the requested braking force), driving information (for example, speed, inclination of the body, etc.) related to the driving state of the motorcycle 10, and capacity information related to the capacity of the power storage device of the power supply unit 6 that can store electric power. Then, based on the driving information and the capacity information, the control device acquires the regenerative braking force that can be generated by the electric motor 5, which is the regenerative braking mechanism, and compares the regenerative braking force with the requested braking force.
• driving information for example, speed, inclination of the body, etc.
• capacity information related to the capacity of the power storage device of the power supply unit 6 that can store electric power.
• control device 60 controls the friction type front wheel brake mechanism 21a to generate a braking force that exceeds the requested braking force as a friction braking force, and controls the electric motor 5 to generate a regenerative braking force.
• a predetermined ratio is set based on the driving state of the motorcycle 10.
• the target braking force of the front wheel braking unit 20 and the target braking force of the rear wheel braking unit 40 are obtained when distributing the required braking force at a ratio (for example, a ratio of the braking force at the front wheel 3 and the braking force at the rear wheel 4 that does not reduce the driving stability of the motorcycle 10).
• the first control unit 61 acquires information about the regenerative braking force that can be generated based on the power storage state of the power supply unit 6, and compares the target braking force of the rear wheel braking unit 40 with the regenerative braking force that can be generated by the rear wheel braking unit 40. If the target braking force of the rear wheel braking unit 40 is within the range of the regenerative braking force that can be generated by the rear wheel braking unit 40, the first control unit 61 performs friction braking force control to generate the target braking force of the front wheel braking unit 20 as the friction braking force of the friction type braking mechanism.
• the first control unit 61 performs frictional braking force control so as to generate, in addition to the target braking force of the front wheel braking unit 20, a braking force that is the difference between the target braking force of the rear wheel braking unit 40 and the regenerative braking force that can be generated by the rear wheel braking unit 40 (hereinafter, sometimes referred to as insufficient braking force) as the frictional braking force of the friction type front wheel braking mechanism 21a.
• the inlet valve 32, the release valve 33, and the switching valve 38a are controlled to be in an energized state
• the booster valve 39 is controlled to be in a non-energized state
• the motor 36 is controlled to be in a driven state.
• the hydraulic pressure of the brake fluid in the wheel cylinder 27a supplied from the master cylinder 23 by the movement of the operation element 11 is released within a predetermined range, and the master cylinder 23 is reduced to a predetermined value, so that the target braking force of the front wheel braking unit 20 and the above-mentioned insufficient braking force are generated as the friction braking force of the friction imparting device 22a.
• the front wheel braking unit 20 the friction braking force imparted to the front wheel 3 by the friction imparting device 22a is generated according to the movement of the operation element 11 during the execution of the interlocking brake control.
• the second control unit 62 controls the power to charge the power storage device within a range that can be generated based on the traveling conditions (e.g., speed, inclination, etc.) of the motorcycle 10 and the power storage condition, and within a range up to the target braking force of the rear wheel braking unit 40, so as to generate a regenerative braking force by the regenerative braking mechanism.
• the traveling conditions e.g., speed, inclination, etc.
• the first control unit 61 controls the inlet valve 32 and the release valve 33 to an energized state, and drives the motor 36 with a drive amount according to the output signals of the first brake fluid pressure sensor 82 and the second brake fluid pressure sensor 83.
• the hydraulic pressure of the brake fluid in the wheel cylinder 27a is reduced, thereby reducing the friction braking force applied by the friction applying device 22a.
• the front wheel brake unit 20 when the interlocking brake control is executed, the friction braking force applied to the front wheel 3 by the friction applying device 22a is reduced regardless of the movement of the operating element 11.
• control device 60 may execute a lock control operation, a slip control operation, a stop assist control operation, and an emergency braking control operation, which will be described later.
• the first control unit 61 controls the inlet valve 32 and the release valve 33 to an energized state, and drives the motor 36 with a drive amount corresponding to the output signals of the first brake fluid pressure sensor 82 and the second brake fluid pressure sensor 83.
• the hydraulic pressure of the brake fluid in the wheel cylinder 27a is reduced, and the friction material (not shown) of the friction applying device 22a is separated from the disc rotor 3a.
• the second control unit 62 reduces the power charging the power storage device of the power supply unit 6.
• the electrical load on the electric motor 5 functioning as a generator is reduced, and the regenerative braking force generated by the electric motor 5 is lowered.
• the regenerative braking force applied to the rear wheels 4 by the electric motor 5 changes by controlling the power charging the power storage device regardless of the movement of the operating element 11.
• a motorcycle 1 ⁇ is in a state where the front wheel 3 and rear wheel 4 are slipping more than the standard value.
• the control device 60 executes a slip control operation to suppress slipping.
• the slip control operation includes, for example, an operation of executing antilock brake control for each wheel, an operation of executing anti-slip control for each wheel, an operation of executing skid suppression control for each wheel, and the like.
• the control device 60 may control other systems mounted on the motorcycle 10 in addition to the brake system 100. The control device 60 executes the slip control operation regardless of the movement of the operator 11.
• the slippage occurring in the front wheel 3 and the rear wheel 4 of the motorcycle 10 and the possibility of the occurrence of slippage can be determined by a well-known method using the output signals of the front wheel rotational speed sensor 81 and the rear wheel rotational speed sensor 91.
• the friction braking force applied to the front wheel 3 by the friction applying device 22a changes regardless of the movement of the operating element 11 due to the control of the inlet valve 32, the release valve 33, and the motor 36 by the control device 60.
• the output signals of the first brake fluid pressure sensor 82 and the second brake fluid pressure sensor 83 command signals to the driver of the inlet valve 32, the release valve 33, and the motor 36 transmitted by the first control section 61 immediately before that may be used.
• the friction braking force applied to the front wheel 3 by the friction applying device 22a is generated and increased by the control of the inlet valve 32, the release valve 33, the switching valve 38a, the pressure increase valve 39, and the motor 36 by the control device 60, regardless of the movement of the operating element 11.
• the reduction can be compensated for by the increase in the friction braking force at the front wheel.
• the control device 60 executes a stop assist control operation to generate a braking force at least on the front wheel 3 to assist the motorcycle 10 in transitioning to and maintaining a stopped state.
• the control device 60 may control other systems mounted on the motorcycle 10 in addition to the brake system 100.
• the stop maintenance assist control operation is released, for example, when it is determined that the rider's hand is released from the control device 11 and the operation is terminated.
• the first control unit 61 controls the inlet valve 32 and the release valve 33 to a non-energized state, controls the switching valve 38a and the pressure increase valve 39 to a conductive state, and drives the motor 36 with a drive amount according to the output signal of the second brake fluid pressure sensor 83.
• the hydraulic pressure of the brake fluid in the wheel cylinder 27a increases, and the friction material (not shown) of the friction applying device 22a is pressed against the disc rotor 3a.
• the control device 60 executes an emergency braking control operation to generate a friction braking force at least on the front wheel 3.
• the control device 60 may control other systems mounted on the motorcycle 10 in addition to the brake system 100.
• the control device 60 may execute the above-mentioned linked brake control to distribute the braking force for urgently slowing down or stopping the motorcycle 10 to the target braking force of the front wheel braking unit 20 and the target braking force of the rear wheel braking unit 40 to generate a braking force.
• the first control unit 61 controls the inlet valve 32 and the release valve 33 to a non-energized state, controls the switching valve 38a and the pressure increase valve 39 to a powered state, and drives the motor 36 with a drive amount corresponding to the output signal of the second brake fluid pressure sensor 83.
• the hydraulic pressure of the brake fluid in the wheel cylinder 27a increases, and the friction material (not shown) of the friction applying device 22a is pressed against the disc rotor 3a.
• the friction braking force applied to the front wheel 3 by the friction applying device 22a changes regardless of the movement of the operator 11 due to the control of the inlet valve 32, the release valve 33, the switching valve 38a, the pressure increase valve 39, and the motor 36 by the control device 60.
• command signals to the driver for the inlet valve 32, the release valve 33, the switching valve 38a, the pressure increase valve 39, and the motor 36 transmitted immediately before by the first control section 61 may be used.
• the control device 60 may be configured to allocate a part or the whole of the target braking forces of the front wheel braking unit 20 and the rear wheel braking unit 40 to the frictional braking force of the friction-type rear wheel braking mechanism 21 b, for example, in the above-mentioned interlocking brake control, lock control operation, slip control operation, stop assist control operation, emergency braking control operation, etc.
• the control device 60 includes an acquisition unit 63 that acquires abnormality information related to an abnormality in the front wheel braking unit 20 described above, and an execution unit 64 that executes control of the relief valve 38 b and the pump 35 b, which serve as actuators, based on the abnormality information.
• the acquisition unit 63 monitors, for example, the output of the rear wheel rotation speed sensor 91 and the remaining battery sensor 92, and determines at a predetermined cycle whether the electric motor 5 as the regenerative braking mechanism can function as a generator to generate regenerative braking force based on the output of these sensors. If it is determined that the regenerative braking mechanism can generate regenerative braking force, the acquisition unit 63 sets regenerative information indicating that the regenerative braking force can be generated in the storage means of the control device 60, and continues monitoring and determination.
• the acquisition unit 63 sets regenerative information indicating that the regenerative braking force cannot be generated in the storage means of the control device 60.
• abnormality information indicating that an abnormality has occurred in the front wheel braking unit 20 is set in the memory means of the control device 60.
• the execution unit 64 determines based on the regenerative information set in the storage means of the control device 60 that a regenerative braking force cannot be generated, the execution unit 64 operates the pump 35b and the relief valve 38 as actuators, and executes control to generate, increase, decrease and eliminate the frictional braking force by the friction type rear wheel brake mechanism 21b based on, for example, the running state of the motorcycle 10, the operation state of the operation element 11, etc.
• the execution unit 64 activates the pump 35 b and the relief valve 38 b as actuators, and executes control to generate, increase, decrease and eliminate the frictional braking force of the friction-type rear wheel braking mechanism 21 b based on, for example, the running state of the motorcycle 10 and the operation state of the operator 11.
• the brake system 100 of this embodiment is a brake system for a rear-wheel drive motorcycle 10, and includes a front wheel braking unit 20 that brakes the front wheel 3 of the motorcycle 10, a rear wheel braking unit 40 that brakes the rear wheel 4 of the motorcycle 10, and an operating element 11 that is operated by a rider of the motorcycle 10.
• the front wheel braking unit 20 includes a friction-type front wheel braking mechanism 21a that is hydraulically connected to the operating element 11 and brakes the front wheel 3 with a friction force according to the hydraulic pressure.
• the rear wheel braking unit 40 includes a regenerative braking mechanism 5 that generates a regenerative braking force in the rear wheel 4 according to the rotation of the rear wheel 4, and a friction-type front wheel braking mechanism 21a that is not hydraulically connected to the operating element 11.
• the configuration includes a by-wire friction rear wheel braking mechanism 21b that brakes the rear wheels 4 with frictional force according to the control of a pump 35b on the rear wheel side and a relief valve 38b as an actuator.
• the brake system 100 of this embodiment is a brake system for a motorcycle 10 which is a rear-wheel drive saddle-ride vehicle, and includes a front wheel braking unit 20 which brakes a front wheel 3 of the motorcycle 10, a rear wheel braking unit 40 which brakes a rear wheel 4 of the motorcycle 10, and an operating element 11 which is operated by a lighter of the motorcycle 10.
• the front wheel braking section 20 includes a friction type front wheel braking mechanism 21a (comprised of a friction imparting device 22a, a master cylinder 23, a reservoir 24a, a hydraulic passage 25, a wheel cylinder 27a, a hydraulic pressure adjusting unit 30, a control device 60, etc.) that generates a friction braking force only on the front wheels 3, and can generate a friction braking force according to the movement of the operating element 11 during normal braking, for example.
• the rear wheel braking section 40 includes an electric motor 5 that functions as a generator as a regenerative braking mechanism that generates a regenerative braking force on the rear wheels 4 and generates a regenerative torque that acts as a regenerative braking force.
• the front wheel braking section 20 is configured to be able to increase and decrease the frictional braking force provided by the friction type front wheel braking mechanism 21a (comprised of the friction providing device 22a, master cylinder 23, reservoir 24a, hydraulic path 25, wheel cylinder 27a, hydraulic pressure adjusting unit 30, etc.) in, for example, interlocking brake control, lock control operation, slip control operation, stop assist control operation, emergency braking control operation, etc., executed by the control device 60, regardless of the movement of the operating element 11.
• the friction type front wheel braking mechanism 21a (comprised of the friction providing device 22a, master cylinder 23, reservoir 24a, hydraulic path 25, wheel cylinder 27a, hydraulic pressure adjusting unit 30, etc.) in, for example, interlocking brake control, lock control operation, slip control operation, stop assist control operation, emergency braking control operation, etc., executed by the control device 60, regardless of the movement of the operating element 11.
• the brake system 100 of this embodiment includes a single operator 11 common to the front wheel braking unit 20 and the rear wheel braking unit 40.
• the control device 60 executes linked brake control to distribute the braking force required by the rider, obtained based on the amount of operation of the operator 11, to a target braking force of the front wheel braking unit 20 and a target braking force of the rear wheel braking unit 40, and thus generates braking forces by the front wheel braking mechanism and the rear wheel braking mechanism.
• the brake system 100 of this embodiment is configured to include a single operator 11 that is common to the front wheel braking unit 20 and the rear wheel braking unit 40 and is operated by the rider's hand.
• brake systems for rear-wheel drive saddle-type vehicles in which the rear wheel is driven by an electric motor include a regenerative braking mechanism that causes the electric motor to function as a generator by the rotation of the rear wheel to generate regenerative torque, which acts on the rear wheel to brake it, and a friction brake mechanism that generates frictional force on the front wheel in response to the rider's operation of the brake lever.
• the regenerative braking mechanism inputs rotational force to the shaft of the electric motor to cause it to function as a generator, and brakes the wheels of the saddle-type vehicle with the regenerative torque generated during power generation.
• the regenerative braking mechanism there are cases where the braking force that the biobraking mechanism can generate is insufficient relative to the target value, or where the mechanism is unable to generate braking force at all, which may result in the motorcycle being unable to be stopped from a traveling state or to be maintained in a stopped state.
• the motorcycle 10 of this embodiment is a rear-wheel drive saddle-ride type vehicle in which the rear wheel 4 is driven by an electric motor 5, and the brake system 100 of the motorcycle 10 is a brake system of a rear-wheel drive motorcycle 10, and includes a front wheel braking unit 20 that brakes the front wheel 3 of the motorcycle 10, a rear wheel braking unit 40 that brakes the rear wheel 4 of the motorcycle 10, and at least one operating element 11 operated by a rider of the motorcycle 10, the front wheel braking unit 20 is hydraulically connected to the operating element 11 and includes a friction-type front wheel braking mechanism 21a that brakes the front wheel 3 with a friction force according to the hydraulic pressure, and the rear wheel braking unit 40 is a friction-type front wheel braking mechanism 21a that brakes the rear wheel 4 of the motorcycle 10 with a friction force according to the hydraulic pressure.
• the rear wheel braking unit 40 is provided with a friction-type rear wheel braking mechanism 21b that is different from the friction-type front wheel braking mechanism 21a of the front wheel braking unit 20. Therefore, even if, for example, an abnormality occurs in the friction-type front wheel braking mechanism 21a of the front wheel braking unit 20 and the front wheel braking unit 20 is unable to brake the front wheel 3, the rear wheel braking unit 40 can brake the rear wheel 4, thereby improving safety when braking the motorcycle 10.
• friction type rear wheel braking mechanism 21b brakes rear wheel 4 with frictional force according to control of pump 35b and relief valve 38b on the rear wheel side. Therefore, with pump 35b and relief valve 38b as actuators that operate according to input of electrical control signals, friction type rear wheel braking mechanism 21b can be of a by-wire type, which makes it easy to install brake system 100 on motorcycle 10.
• the fluid paths 25C to 25E, the inlet valve 32, the release valve 33, the accumulator 34, the pump 35A, the motor 36, the switching valve 38A, and the booster valve 39 of the friction type front wheel braking mechanism 21A are provided on the base 31, and the fluid paths 26C, 26D, the pump 35B, and the relief valve 38B of the friction type rear wheel braking mechanism 21B are provided on the base 31. That is, That is, at least a portion of the front friction wheel braking mechanism 21 a and at least a portion of the rear friction wheel braking mechanism 21 b are provided on a common base body 31.
• the brake system 100 of this embodiment is configured to include one operator 11, which is operated by a rider, and is hydraulically connected to a friction-type front wheel braking mechanism 21 a of the front wheel braking unit 20.
• an operator 11 operated by a rider is configured as a brake lever provided on a handlebar 2, and is configured to be operated by the rider's hand.
• the rider can operate the brake system 100 by operating the operating element 11 with his or her hand. This allows for more precise operation than when the rider operates the brake system with his or her foot, thereby improving the operability of the brake system 100.
• the friction type front wheel braking mechanism 21a may be operated by the first operator, and the friction type rear wheel braking mechanism 21b and the regenerative braking mechanism 5 may be operated by the second operator.
• the first operating element may be operated by a first operating element, and the regenerative braking mechanism 5 may be operated by a second operating element.
• the first operating element and the second operating element operate the friction type front wheel braking mechanism 21 a, the friction type rear wheel braking mechanism 21 b, and the regenerative braking mechanism 5 corresponding to the operating elements, so that the rider can selectively use the friction type front wheel braking mechanism 21 a, the friction type rear wheel braking mechanism 21 b, and the regenerative braking mechanism 5 by selecting either the first operating element or the second operating element, thereby improving the operability of the brake system 100.
• the brake system 100 of this embodiment includes a control device 60 that controls the braking force applied by the friction type rear wheel braking mechanism 21b.
• the control device 60 includes an acquisition unit 63 that acquires abnormality information related to an abnormality in the front wheel braking unit 20, and an execution unit 64 that, when it is determined that an abnormality has occurred in the front wheel braking unit 20 based on the abnormality information, operates the movement device 73 of the friction type rear wheel braking mechanism 21b as an actuator to execute control to generate and increase a braking force on the rear wheel 4 by the friction type rear wheel braking mechanism 21b.
• Control device 6 ⁇ is configured to include an acquisition unit 63 that acquires regenerative information related to regenerative braking mechanism 5, and an execution unit 64 that, when it is determined based on the regenerative information that regenerative braking mechanism 5 is unable to generate regenerative braking force, operates moving device 73 of friction type rear wheel braking mechanism 21b as an actuator to execute control to generate and increase braking force on rear wheel 4 by friction type rear wheel braking mechanism 21b.

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• Engineering & Computer Science (AREA)
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• Fluid Mechanics (AREA)
• General Engineering & Computer Science (AREA)
• Power Engineering (AREA)
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• 2023
  • 2023-11-29 DE DE112023005386.3T patent/DE112023005386T5/de active Pending
  • 2023-11-29 CN CN202380089338.6A patent/CN120418135A/zh active Pending
  • 2023-11-29 WO PCT/IB2023/062005 patent/WO2024141827A1/ja not_active Ceased
  • 2023-11-29 JP JP2024566905A patent/JPWO2024141827A1/ja active Pending

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