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WO2022038620A1 - Système de freinage pour véhicule à moteur - Google Patents

Système de freinage pour véhicule à moteur Download PDF

Info

Publication number
WO2022038620A1
WO2022038620A1 PCT/IN2020/050939 IN2020050939W WO2022038620A1 WO 2022038620 A1 WO2022038620 A1 WO 2022038620A1 IN 2020050939 W IN2020050939 W IN 2020050939W WO 2022038620 A1 WO2022038620 A1 WO 2022038620A1
Authority
WO
WIPO (PCT)
Prior art keywords
brake
synchronous
brake lever
braking unit
braking
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/IN2020/050939
Other languages
English (en)
Inventor
Mohan Shanmugam
Venkata Mangaraju KARANAM
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TVS Motor Co Ltd
Original Assignee
TVS Motor Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by TVS Motor Co Ltd filed Critical TVS Motor Co Ltd
Priority to EP20824356.8A priority Critical patent/EP4200172A1/fr
Publication of WO2022038620A1 publication Critical patent/WO2022038620A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • B60T7/00—Brake-action initiating means
    • B60T7/02—Brake-action initiating means for personal initiation
    • B60T7/04—Brake-action initiating means for personal initiation foot actuated
    • B60T7/06—Disposition of pedal
    • 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
    • B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
    • B60T11/10—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic
    • B60T11/101—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic equalising arrangements
    • 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
    • B60T8/26—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
    • B60T8/32—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
    • B62L3/04—Brake-actuating mechanisms; Arrangements thereof for control by a foot lever
    • 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
    • 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
    • B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
    • B60T11/04—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting mechanically
    • B60T11/046—Using cables

Definitions

  • the present subject matter described herein in general relates to a motor vehicle and more particularly to a braking system for the motor vehicle.
  • the braking system for slowing or stopping the vehicle.
  • the braking system usually, comprises a front wheel brake and a rear wheel brake for a front wheel and a rear wheel, respectively.
  • each of the front wheel brake and the rear wheel brake is connected to at least one brake lever for actuation.
  • the brake lever enables actuation of the wheel brake.
  • the brake lever is connected to the wheel brake for applying friction to each wheel of the two-wheeled vehicle, as and when required.
  • the brake lever can be connected to the wheel brake in a variety of ways.
  • the brake lever can be connected to the wheel brake by means of a cable.
  • one end of the cable may be secured to the wheel brake, and the other end of the cable may be secured to the brake lever. Consequently, actuation of the brake lever may result in actuation of the brake assembly and subsequently, the brake may be applied. Nevertheless, the brake assembly can be connected to the lever by means of hydraulic system also. Furthermore, in some applications, combination of the cable and the hydraulic means is used.
  • FIG. 1 illustrates a right-side view of an exemplary motor vehicle, in accordance with an embodiment of the present subject matter.
  • FIG. 2 (a) illustrates a schematic block diagram of a braking system for a motor vehicle, in accordance with an embodiment of the present subject matter.
  • Fig. 2 (b) illustrates a schematic view of the braking system for a motor vehicle, in accordance with an embodiment of the present subject matter.
  • FIG. 2 (c) illustrates a schematic view of a braking system for a motor vehicle, in accordance with an embodiment of the present subject matter.
  • FIG. 3 (a) illustrates a schematic block diagram of a braking system for a motor vehicle, in accordance with a second embodiment of the present subject matter.
  • FIG. 3 (b) illustrates a schematic view of the braking system 200, in accordance with a second embodiment of the present subject matter.
  • FIG. 4 illustrates a schematic block diagram of a braking system, in accordance with a third embodiment of the present subject matter.
  • FIG. 5 illustrates a schematic block diagram of a braking system, in accordance with a fourth embodiment of the present subject matter.
  • FIG. 6 illustrates a schematic block diagram of a braking system, in accordance with a fifth embodiment of the present subject matter.
  • a disc brake or a drum brake is provided to operate as a front wheel brake and a drum brake or a disc brake is provided to operate as a rear wheel brake.
  • the disc brake is provided as front wheel brake for effective braking and the disc brake or the drum brake is provided on the rear wheel brake depending on the application.
  • two- or three-wheeled motor vehicles use only independent and separate brake controls for front wheels and rear wheels unlike other vehicles like passenger cars, trucks and buses etc.
  • the rear wheel brake is pre -dominantly used when compared to the front wheel brake, which would provide poor braking performance.
  • Such a practice stems from the apprehensions the novice riders have in operating the front wheel brake.
  • the stopping distance is higher, as compared to independently applying front wheel brake or applying both front wheel and rear wheel brakes together.
  • weight transfer towards the front wheel causes the front wheel to brake abruptly, and the rider may experience a sudden jerk or wheel lift-off creating discomfort.
  • the sudden jerk may affect the ride quality and may disturb the balance and stability of the vehicle leading to accident.
  • the rider may operate the front wheel brake with excessive force.
  • ABS anti-lock brake system
  • ABS system may comprise an extra ABS channel (a third channel).
  • the front wheel brake receives a signal channel from front brake and channel signal from the combined brake. This again requires a multi pot caliper (three or more) making the caliper bulkier.
  • the assembly is complex and expensive.
  • additional internal child parts are used (additional valves in ABS unit), which increases the weight, size and complexity of the braking system.
  • a delay valve is also is used in such system increasing part count and cost. Due to the presence of child parts and the additional parts like the delay valve, the additional channel, the assembly time and servicing processes become complex. Some of these systems consume high power, as three channels have to operated, and whereby life of battery of the motor vehicle is reduced. This may lead to poor customer satisfaction as the servicing requires trained personnel and replacement, servicing costs are higher in such system. With any advanced braking system, gaining customer perceiving value is another great challenge. [00017] Hence, there is a need for a braking system that is aimed at addressing the aforementioned and other problems in the prior art, without increasing the cost of the system. The braking system should be capable of utilizing an existing ABS unit without the need for migrating to a specialized ABS unit, which would be expensive. Thus, the present subject matter provides a braking system that addresses the aforementioned and other problems in the prior arts.
  • the braking system for the motor vehicles comprises one or more front wheel brake(s) corresponding to one or more front wheel(s) and one or more rear wheel brake(s) corresponding to one or more rear wheel(s).
  • one front wheel brake and one rear wheel brake corresponding to one front wheel and one rear wheel is considered for brevity of explanation and not by way of limitation.
  • the one or more front wheel brake(s) is at least partially mounted on the one or more front wheel(s).
  • the one or more rear wheel brake(s) is at least partially mounted on the one or more rear wheel(s).
  • the braking system comprises an independent brake lever configured to actuate braking force on one of the one or more front wheel brake(s) and the one or more rear wheel brake(s).
  • a synchronous brake lever is configured to actuate braking force on both the one or more front wheel brake (s) and the one or more rear wheel brake(s).
  • the braking system comprises a brake module constituted by a synchronous braking unit and an anti-lock braking unit.
  • the synchronous braking receives input from the independent brake lever and the synchronous brake lever.
  • the input from the independent brake lever and synchronous brake lever can be one of a mechanical, by way of cable, and a hydraulic, by way of hose, or a combination thereof.
  • At least one intermediate output from the synchronous braking unit is applied to the anti-lock braking unit for actuating the one or more front wheel brake(s) and the one or more rear wheel brake(s) by one of a simultaneous actuation of the one or more front wheel brake(s) and the one or more rear wheel brake(s) and an independent operation of one of the one or more front wheel brake(s) and the one or more rear wheel brake(s), depending on brake lever actuated, and preventing locking of the one or more front wheel brake(s) and the one or more rear wheel brake(s) during braking.
  • the number of intermediate outputs depends on channels from the anti-lock braking unit and number of corresponding brakes connected to the channels.
  • the one of the simultaneous actuation of the one or more front wheel brake(s) and the one or more rear wheel brake(s) and the independent operation of one of the one or more front wheel brake(s) and the one or more rear wheel brake(s) is performed depending on actuation of the independent brake lever and the synchronous brake lever.
  • Application of the independent brake lever provides a single output to the anti-lock braking unit to actuate one of the one or more front wheel brake(s) and the one or more rear wheel brake(s).
  • Application of the synchronous brake lever provides two outputs from the synchronous braking unit to the anti-lock braking unit for actuating both the one or more front wheel brake(s) and the one or more rear wheel brake(s).
  • the present subject matter is configured to use a standard anti-lock braking unit without the need for any specialized ABS unit with additional channels.
  • the present subject matter utilizes on two- channel anti-lock braking unit.
  • the at least one intermediate output of the synchronous braking unit is hydraulic for both the one or more front wheel brake (s) and the one or more rear wheel brake(s) irrespective of the configuration of the independent brake lever and the synchronous brake lever.
  • the present subject can be implemented in any motor vehicle configuration, which has levers operating hydraulic master cylinder or levers operating brake cables.
  • the synchronous braking unit comprises one of at least one pressure control valve.
  • the hydraulic output of the pressure control valve acts as the intermediate output that is applied to the anti-lock braking unit.
  • the present subject matter provides a simple circuitry, from the levers to the wheel brake(s), for preforming simultaneous operation of the front wheel brake(s) and the rear wheel brake(s) and preventing locking of wheel(s) thereby providing safe and cost-effective braking system.
  • the synchronous braking unit comprises at least one master cylinder and the at least one master cylinder is connected to the anti-lock braking unit through an output hose.
  • the at least one master cylinder of the synchronous braking unit receives a mechanical input through a cable or the like and the mechanical input is converted to hydraulic input to be applied to the anti- lock braking unit.
  • the synchronous braking unit comprises a first master cylinder and a second master cylinder when an output of the independent brake and an output of the synchronous brake lever are non-hydraulic, say cable operated or the like.
  • the first master cylinder and said second master cylinder are coupled to the independent brake lever and the synchronous brake lever, respectively, through cables or the like.
  • the first master cylinder the second master cylinder that form part of the synchronous braking unit are disposed away from the independent brake lever and the synchronous brake lever, respectively.
  • the master cylinders can be disposed away from the levers without disturbing the existing configuration of the levers and making the braking system of the present subject matter adaptable to any existing brake configuration.
  • the synchronous braking unit comprises a first master cylinder and a second master cylinder functionally integrated with corresponding independent brake lever and the synchronous brake lever, when an output of both the independent brake lever and the synchronous brake lever are hydraulic.
  • the brake lever and the master cylinder can be disposed in proximity for one to operate other and can be mounted on the handlebar assembly or near to a rider foot-rest.
  • the braking system is not limited to hand-operated or foot-operated type braking system and the synchronous brake lever is one of a hand-operated brake lever mounted to a handlebar assembly and a foot-operated brake lever disposed in proximity to a rider foot-rest.
  • the synchronous braking unit is configured to receive input from the independent brake lever and the synchronous brake lever, either simultaneously or one after another, and the synchronous braking unit actuates the one or more front wheel brake(s) through any one input from the independent brake lever and the synchronous brake lever thereby eliminating excessive braking due to application of both brake levers.
  • the synchronous braking unit is in the form of suspension responsive harmonized braking system. Depending upon dynamic condition of the suspension, the synchronous braking unit responds dynamically.
  • the synchronous braking unit can be based on outer cable reaction system that uses reaction from an outer cable/sheath during operation of one brake lever corresponding to one wheel brake to actuate another wheel brake.
  • the synchronous braking unit can be based on a pivot reaction system that uses a pivot reaction at a pivot during operation of one brake lever corresponding to one wheel brake to operate another wheel brake.
  • the synchronous braking unit comprises an equalizer acting as a force distribution member for actuation of two-wheel brakes.
  • the brake module is formed by the integration of synchronous braking unit with the anti-locking braking unit.
  • the anti-lock braking unit comprises a channel connected to front wheel brake(s). During independent brake lever operation and during synchronous brake lever operation, the front wheel brake(s) is operated through the same channel. Need for an additional channel or a caliper unit with multiple caliper (corresponding to additional channel) is avoided saving cost and providing simple circuity.
  • the brake module comprising the synchronous braking unit and the anti- lock braking unit provides an effective braking that provides shorter stopping distance and preventing wheel locking through the same brake module.
  • the present subject matter utilizes a simple anti-lock braking unit, which optimally utilizes battery as the number of channels to be operated are optimal thereby avoiding excessive drainage of battery.
  • FIG. 1 illustrates a right-side view of an exemplary motor vehicle, in accordance with an embodiment of the present subject matter.
  • the motor vehicle 100 comprises a front wheel 101.
  • the front wheel 101 is rotatably connected to a front suspension 132.
  • the front wheel 101 is capable of being steered by a handlebar assembly 122.
  • the front wheel 101 is provided with a front wheel brake 102.
  • a rear wheel 103 is rotatably supported by a swing arm 146.
  • the swing arm 146 is connected to a rear suspension 140.
  • a rear wheel brake 104 is supported on the rear wheel 103.
  • the motor vehicle 100 may include one or more front wheel(s) and one or more rear wheel(s) & one or more front wheel brake(s) and one or more rear wheel brake(s).
  • the one or more front wheel(s) and the one or more rear wheel(s) & the one or more front wheel brake(s) and the one or more rear wheel brake(s) are referred to in singular form viz. ‘front wheel’, ‘rear wheel’, ‘front wheel brake’, & ‘rear wheel brake’ not by way of limitation but for brevity of explanation.
  • the front suspension 132 and the rear suspension 140 are supported by a frame assembly 150.
  • the frame assembly 150 comprises a head tube (not shown) disposed at a front portion of the motor vehicle 100, a main frame 151 extending rearwardly downward from the head tube.
  • the motor vehicle 100 includes a fuel tank 136 mounted to the frame assembly 150 and disposed rearward to the handlebar assembly 122. Further, in one embodiment, a seat assembly 138 is provided for a rider to operate the motor vehicle in a seated condition. A power unit 144 including an engine assembly and/ or an electric motor is disposed below the fuel tank 136. A front fender 134 is provided to at least partially cover the front wheel 101. Likewise, a rear fender 142 is disposed at a rear portion of the motor vehicle 100.
  • the motor vehicle 100 comprises a braking system 200 (shown in Fig. 2 (a)).
  • the braking system 200 includes an independent brake lever 205 to operate the front wheel brake 102.
  • a synchronous brake lever 210 is provided to synchronously operate the front wheel brake 102 and the rear wheel brake 104.
  • the independent brake lever 205 is disposed on the handlebar assembly 122 and the synchronous brake lever 210 is disposed near rider foot-rest.
  • Fig. 2 (a) illustrates a schematic block diagram of a braking system 200 for a motor vehicle, in accordance with an embodiment of the present subject matter.
  • the braking system 200 comprises an independent brake lever 205 configured to operate a first master cylinder 206.
  • a synchronous brake lever 210 is configured to operate a second master cylinder 211.
  • the first master cylinder 206 and the second master cylinder 211 are connected to a brake module 230 through a first input brake hose 215 and a second input brake hose 220, respectively.
  • a front wheel brake 102 and a rear wheel brake 104 are connected to output of the brake module 230 through a front brake output hose 245 and a rear brake output hose 250 respectively.
  • the synchronous brake lever 210 is a foot-operated brake lever. The foot-operated brake lever 210 is disposed in proximity to the rider foot-rest in order for the rider to actuate the same through foot.
  • the brake module 230 is configured to actuate the front wheel brake 102 upon application of the independent brake lever 205.
  • the brake module 230 is configured to synchronously actuate the front wheel brake 102 and the rear wheel brake 104 upon application of the synchronous brake lever 210.
  • the brake module 230 comprises a synchronous braking unit 235 and an anti-lock braking unit 240.
  • the first input brake hose 215 and the second input brake hose 220 are connected to the synchronous braking unit 235 and an output of the synchronous braking unit 235, referred to as intermediate output 290, 291, which is applied to the anti-lock braking unit 240 for actuating the front wheel brake 102 or both the front wheel brake 102 and the rear wheel brake 104 simultaneously, depending on lever being actuated, preventing locking of the front wheel 101 and the rear wheel 103 during their braking operation.
  • the anti-lock braking unit 240 performs actuation of the front wheel brake 102, or actuation of both the front wheel brake 102 and the rear wheel brake 104 in a controlled manner depending on the lever being actuated.
  • the at least one intermediate output 290, 291 of the synchronous braking unit 235 is hydraulic corresponding to both the front wheel brake 102 and the rear wheel brake 104 and the at least one intermediate output 290, 291 is fed as input to the anti-lock braking unit 240.
  • the number of intermediate output 290, 291 of the synchronous braking unit 235 corresponds to number of wheel brakes of the front wheel brake 102 and the rear wheel brake 104.
  • the number of intermediate outputs are two, as there is one front wheel brake 102 and one rear wheel brake 104 in the current embodiment.
  • Fig. 2 (b) illustrates a schematic view of the braking system 200, in accordance with an embodiment of the presents subject matter.
  • the brake module 230 comprises the synchronous braking unit 235 formed by a pressure control valve configured to actuate the rear wheel brake 104 and, or the front wheel brake 102 through the anti-lock braking unit 240.
  • the at least one intermediate output 290, 291 of the synchronous braking unit 235 is connected to the anti-lock braking unit 240 through hoses.
  • the synchronous braking unit 235 formed by the pressure control valve comprises a first input port 236 and as second input port 237.
  • the first input brake hose 215 is connected to the first input port 236 and the second input brake hose 220 is connected to the second input port 237.
  • the synchronous braking unit 235 comprises first output port 238 and a second output port 239.
  • the first output port 238 is connected to the first output hose 255 and the second output port 239 is connected to the second output hose 260.
  • the synchronous braking unit 235 comprises a piston assembly (not labelled).
  • Actuation of first master cylinder 206 or the second master cylinder 211 causes actuation of the piston assembly whereby the front wheel brake 104, or both the front wheel brake 102 and rear wheel brake 104 are actuated through the anti-lock braking unit 240, respectively.
  • the application of the independent brake lever 205 actuates the first master cylinder 206.
  • the first master cylinder 206 causes a change in hydraulic pressure or causes flow of hydraulic fluid in the first input hose 215.
  • the hydraulic fluid from the first input hose 215 causes actuation of the synchronous braking unit 235 through the first input port 236.
  • the first input port 236 is configured to actuate piston assembly so as to cause a hydraulic pressure change in the first output port 238.
  • the hydraulic pressure at the first output port 238 acts as an input to the anti-lock braking unit 240 corresponding to the front wheel brake 102.
  • the application of the synchronous brake lever 210 actuates the second master cylinder 211.
  • the second master cylinder 211 causes a change in hydraulic pressure or causes flow of hydraulic fluid in the second input hose 220.
  • the hydraulic fluid from the second input hose 220 causes actuation of the synchronous braking unit 235 through the second input port 237.
  • the second input port 237 is configured to actuate piston assembly so as to cause a hydraulic pressure change in the first output port 238 and the second output port 239.
  • the hydraulic pressure at the first output port 238 and the second output port 239 act as an input to the anti-lock braking unit 240 corresponding to the front wheel brake 102 and the rear wheel brake 104, respectively.
  • the present subject matter provides a synchronous brake operation through the anti-lock braking system 240 whereby effective and safe braking operation is achieved.
  • the synchronous braking unit 235 receives input from the independent brake lever 205 (the first master cylinder 206) and the synchronous brake lever 210 (the second master cylinder 211). However, the synchronous braking unit 235 is configured to deliver only one control (out of the independent brake lever 205 and the synchronous brake lever 210) for actuating the front wheel brake 102 through the anti-lock braking unit 240. As a result, application of single braking force by considering input from both the independent brake lever 205 and the synchronous brake lever 211 is achieved which otherwise can create excessive braking force on the front wheel brake 102, which is undesirable.
  • the anti-lock braking unit 240 comprises an electronic control unit 241 and a hydraulic control unit 242.
  • the electronic control unit 241 is configured to receive data related to wheel speed.
  • the hydraulic control unit 242 senses pressure applied through the first output hose 255 and the second output hose 260 that is analogous to the braking force applied by the rider, which act as input to the anti-lock braking unit 240.
  • a motor M of the hydraulic control unit 242 modulates the hydraulic pressure at the front brake output hose 245 and the rear brake output hose 250 by controlling operation of two pumps P.
  • FIG. 2 (c) illustrates a schematic view of a braking system 200, in accordance with an embodiment of the present subject matter.
  • a front wheel brake 102 is at least partially provided on a front wheel brake 102 and a rear wheel brake 104 is at least partially provided on a rear wheel 103.
  • the wheel brake is a disc brake, which has a disc mounted to the wheel and a caliper mounted to a suspension or a swing arm.
  • the front wheel brake 102 is formed by at least one-disc brake and the rear wheel brake 104 is formed by at least one-disc brake.
  • the front wheel brake 102 comprises a front disc 264 and a front caliper 262.
  • the rear wheel brake 104 comprises a rear disc 268 and a rear caliper 266.
  • the front disc 264 and the rear disc 268 rotate along with the front wheel 101 and the rear wheel 103 respectively.
  • the front brake output hose 245 and the rear brake output hose 250 coming from the braking unit 230 are connected to the front caliper 262 and the rear caliper 266 respectively.
  • the calipers 262, 266 are capable of applying frictional force on the disc 264, 268 during application of brake to slow the motor vehicle or to bring it to halt.
  • the front wheel 101 and the rear wheel 103 are provided with a wheel speed sensor (not shown), which is toothed wheel in an implementation.
  • the brake module 230 can be securely supported on a frame assembly 150 (shown in Fig. 1) of the motor vehicle and the brake hoses can be supported by at least a main frame 151 (shown in Fig. 1) of the frame assembly 150.
  • Fig. 3 (a) illustrates a schematic block diagram of a braking system 300 for a motor vehicle, in accordance with a second embodiment of the present subject matter.
  • the braking system 300 comprises an independent brake lever 205 configured to operate a first master cylinder 206.
  • a synchronous brake lever 310 is configured to operate a second master cylinder 311.
  • the first master cylinder 206 and a second master cylinder 311 are mounted to a handlebar assembly 122 (shown in Fig. 1) of the motor vehicle.
  • the independent brake lever 205 is mounted on a right-hand side of the handlebar assembly 122 and the synchronous brake lever 310 is mounted on a left-hand side of the handlebar assembly 122.
  • the braking system 300 includes a brake module 230.
  • the brake module 230 comprises an anti-lock braking unit 240 that receives at least one intermediate output 290, 291 from a synchronous braking unit 235 of the brake module 230.
  • the first master cylinder 206 and the second master cylinder 311 are functionally connected to brake module 230 through a first input brake hose 215 and a second input brake hose 320.
  • the synchronous braking unit 235 comprises the first master cylinder 206 and the second master cylinder 311 functionally integrated with the corresponding independent brake lever 205 and the synchronous brake lever 310, respectively, when an output of both the independent brake lever 205 and the synchronous brake lever 310 are hydraulic.
  • the output of the independent brake lever or the synchronous brake lever being hydraulic implies that that the lever actuates a master cylinder and the output due to actuation in hydraulic.
  • the output of the independent brake lever or the synchronous brake lever being non-hydraulic implies that that the lever actuates a brake cable, and the output due to actuation of the lever is mechanical or the like.
  • the term ‘functionally integrated’ used herein indicates that, say, the first master cylinder 206 and the corresponding independent brake lever 205 are provided in functional proximity and one operating on another.
  • the independent brake lever 205 is configured to directly actuate a piston of the first master cylinder 206.
  • the brake module 230 is configured to actuate only the front wheel brake 102 upon application of the independent brake lever 205.
  • the brake module 230 is also configured to synchronously actuate both, the front wheel brake 102 and the rear wheel brake 104, upon application of the synchronous brake lever 310.
  • Fig. 3 (b) illustrates a schematic view of the braking system 200, in accordance with an embodiment of the presents subject matter.
  • the brake module 230 comprises the synchronous braking unit 235 formed by a pressure control valve configured to actuate the rear wheel brake 104 and, or the front wheel brake 102 through the anti-lock braking unit 240.
  • the at least one intermediate output 290, 291 of the synchronous braking unit 235 is connected to the anti-lock braking unit 240.
  • the synchronous braking unit 235 formed by the pressure control valve comprises a first input port 236 and a second input port 237.
  • the first input cable 215 is connected to the first input port 236 and the second input cable 320 is connected to the second input port 237.
  • the synchronous braking unit 235 comprises first output port 238 and a second output port 239.
  • the first output port 238 is connected to the first output hose 255 and the second output port is connected to the second output hose 260.
  • the synchronous braking unit 235 comprises a piston assembly. Actuation of first master cylinder 206 or the second master cylinder 311 causes actuation of the piston assembly whereby the front wheel brake 102 or both the front wheel brake 102 and the rear wheel brake 104 are actuated, respectively.
  • the application of the independent brake lever 205 actuates the first master cylinder 206.
  • the first master cylinder 206 causes a change in hydraulic pressure or causes flow of hydraulic fluid in the first input hose 215.
  • the hydraulic fluid from the first input hose 215 causes actuation of the synchronous braking unit 235 through the first input port 236.
  • the first input port 236 is configured to actuate piston assembly so as to cause a hydraulic pressure change in the first output port 238.
  • the hydraulic pressure at the first output port 238 acts as an input to the anti-lock braking unit 240 corresponding to the front wheel brake 102.
  • application of the synchronous brake lever 310 actuates the second master cylinder 311.
  • the second master cylinder 311 causes a change in hydraulic pressure or causes flow of hydraulic fluid in a second input hose 320.
  • the hydraulic fluid from the second input hose 320 causes actuation of the synchronous braking unit 235 through the second input port 237.
  • the second input port 237 is configured to actuate piston assembly so as to cause a hydraulic pressure change in the first output port 238 and the second output port 239.
  • the hydraulic pressure at the first output port 238 and the second output port 239 act as an input to the anti- lock braking unit 240 corresponding to the front wheel brake 102 and the rear wheel brake 104, respectively.
  • the anti-lock braking unit 240 comprises an electronic control unit 241 and a hydraulic control unit 242.
  • the anti-lock braking unit 240 is an electro-mechanical system powered by an on-board battery of the motor vehicle.
  • Fig. 4 illustrates a schematic block diagram of a braking system 400, in accordance with a third embodiment of the present subject matter.
  • the independent brake lever 205 is configured to actuate the first master cylinder 206.
  • a first input hose 415 connects the first master cylinder 206 to a brake module 430.
  • the brake module 430 of the present embodiment, comprises a synchronous braking unit 435.
  • the synchronous braking unit 435 works on the principle of brake force distribution by using an equalizer (not shown) or the like.
  • a synchronous brake lever 410 is functionally connected to a second brake cable 420.
  • the second brake cable 420 is a mechanical cable comprising an inner cable (not shown) and a sheath.
  • the inner cable is slidable about the sheath.
  • the synchronous braking unit 430 comprises at least one master cylinder.
  • the synchronous braking unit 430 comprises a second master cylinder 411, which is disposed away from the synchronous brake lever 410, as per one implementation.
  • a first output hose 455 of the synchronous braking unit 435 is connected to a first input port (not shown) of the anti-lock braking unit 240.
  • An intermediate output cable 475 of the synchronous braking unit 435 is connected to the second master cylinder 411.
  • a first output hose 460 of the secondary master cylinder 411 is connected to a second input (not shown) of the anti-lock braking unit 240.
  • the first output hose 455 and the second output hose 460 form an intermediate output 290, 491 of the synchronous braking unit 435 that is applied to anti-lock braking unit 240.
  • the front brake output hose 245 and the rear brake output hose 250 connect the anti-lock braking unit 240 (of the brake module 430) to the front wheel brake 102 and the rear wheel brake 104, respectively.
  • the synchronous brake lever 410 is a hand-operated brake lever. In another implementation, the synchronous brake lever 410 is a foot- operated brake lever.
  • the number of intermediate output 290, 491 of the synchronous braking unit 435 corresponds to number of wheel brakes of the front wheel brake 102 and the rear wheel brake 104.
  • the number of intermediate outputs is two, as there is one front wheel brake 102 and one rear wheel brake 104 in the current embodiment.
  • Fig. 5 illustrates a schematic block diagram of a braking system 500, in accordance with a fourth embodiment of the present subject matter.
  • an independent brake lever 505 is functionally connected to a first brake cable 515.
  • a synchronous brake lever 410 is functionally connected to a second brake cable 420.
  • the first brake cable 515 and the second brake cable 420 are connected to a brake module 530.
  • the first brake cable 515 and the second brake cable 420 are mechanical cables comprising an inner cable (not shown) and a sheath.
  • the brake module 530 comprises a synchronous braking unit 535 and an anti-lock braking unit 240.
  • the first brake cable 515 and the second brake cable 420 are connected to the synchronous braking unit 535.
  • the synchronous braking unit 530 comprises at least one master cylinder.
  • the synchronous braking unit 530 comprises a first master cylinder 506 and a second master cylinder 411.
  • a first intermediate cable 485 of the synchronous braking unit 535 is connected to the first master cylinder 506 and a second intermediate cable 475 of the synchronous braking unit 535 is connected to a second master cylinder 411.
  • the output of the first master cylinder 506 and of the second master cylinder 411 are connected to a first and a second input (not shown) of the anti-lock braking unit 240 through the first output hose 555 and second output hose 460 respectively.
  • the output of the second master cylinder 411 forms part of an intermediate output 591 being applied to the anti-lock braking unit 240.
  • the synchronous braking unit 535 provides at least one intermediate output 590, 591, which is hydraulic fluid/pressure.
  • the intermediate outputs 590, 591 are fed to the anti-lock braking unit 240.
  • the front brake output hose 245 and the rear brake output hose 250 connect the anti-lock braking unit 240 (of the brake module 530) to the front wheel brake 102 and the rear wheel brake 104, respectively.
  • the independent brake lever 505 and the synchronous brake lever 410 are hand-operated brake levers.
  • Fig. 6 illustrates a schematic block diagram of a braking system 600, in accordance with a fifth embodiment of the present subject matter.
  • an independent brake lever 605 is configured to actuate a first master cylinder 606.
  • a secondary brake lever 607 is also configured to actuate the first master cylinder 606, which is independent of the independent brake lever 605.
  • the first master cylinder 606 is connected to a first input hose 615 at one end thereof and other end of the first input hose 615 is connected to a brake module 630.
  • the first input hose 615 in the present embodiment, acts as a first output hose 655.
  • a synchronous brake lever 610 is functionally connected to a distributor unit 612. Through the distributor unit 612, the synchronous brake lever 610 is connected to a second intermediate cable 675 and an additional cable 617. The second intermediate cable 675 is connected to a second master cylinder 611. The second master cylinder 611 is in turn connected to the brake module 630 through a second output hose 660.
  • the brake module 630 comprises a synchronous braking unit and an anti-lock braking unit 240.
  • the synchronous braking unit is formed by the distributor unit 612, the additional cable 617, and the secondary lever 607.
  • the additional cable 617 functionally connects synchronous brake lever 610 to the first master cylinder 606.
  • the additional cable 617 comprises an inner cable and an outer cable (not shown). One end of the inner cable is connected to the synchronous brake lever 610 and the other end of the inner cable is configured to actuate the first master cylinder 606.
  • the anti-lock braking unit 240 receives two inputs, which are intermediate outputs 690, 691 of the synchronous braking unit.
  • the anti-lock braking unit 240 has two outputs that are connected to the front wheel brake 102 and the rear wheel brake 104 through a front brake output hose 245 and a rear brake output hose 250.
  • the synchronous brake lever 610 is a hand-operated brake lever.
  • the synchronous brake lever can be a foot- operated brake lever and is disposed along with a distributor unit near the rider footrest.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Hydraulic Control Valves For Brake Systems (AREA)
  • Regulating Braking Force (AREA)

Abstract

La présente invention concerne un système de freinage (200) pour un véhicule à moteur. Le véhicule à moteur comprend un ou plusieurs frein(s) de roue avant (102) monté(s) sur une ou plusieurs roue(s) avant (101) et un ou plusieurs frein(s) de roue arrière (104) monté(s) sur une ou plusieurs roue(s) arrière (103). Un module de frein (230) est disposé, ledit module de frein (230) comprenant une unité de freinage synchrone (235) et une unité de freinage antiblocage (240). L'unité de freinage synchrone (235) reçoit une entrée à partir d'un levier de frein indépendant (205) et d'un levier de frein synchrone (210) pour actionner le ou les frein(s) de roue avant (102) et le ou les frein(s) de roue arrière (104), soit simultanément soit l'un quelconque d'entre eux de façon indépendante, et empêcher le blocage de la ou des roue(s) avant (101) et de la ou des roue(s) arrière (103) pendant leur opération de freinage. La présente invention procure un circuit simple avec moindre nombre de pièces.
PCT/IN2020/050939 2020-08-19 2020-11-08 Système de freinage pour véhicule à moteur Ceased WO2022038620A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20824356.8A EP4200172A1 (fr) 2020-08-19 2020-11-08 Système de freinage pour véhicule à moteur

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN202041035642 2020-08-19
IN202041035642 2020-08-19

Publications (1)

Publication Number Publication Date
WO2022038620A1 true WO2022038620A1 (fr) 2022-02-24

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PCT/IN2020/050939 Ceased WO2022038620A1 (fr) 2020-08-19 2020-11-08 Système de freinage pour véhicule à moteur

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024180265A1 (fr) * 2023-02-28 2024-09-06 Xiu Rdi, S.L. Système de frein combiné pour motocyclettes

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994012374A1 (fr) * 1992-11-28 1994-06-09 Peraves Aktiengesellschaft Systeme de freinage hydraulique mixte pour vehicules a deux roues et vehicule a deux roues equipe d'un tel systeme de freinage
JPH09309482A (ja) * 1996-05-21 1997-12-02 Nissin Kogyo Kk 自動二輪車用ブレーキ装置
EP2311699A1 (fr) * 2009-10-16 2011-04-20 Yamaha Hatsudoki Kabushiki Kaisha Système de freinage pour motocyclette
EP3037309A1 (fr) * 2014-05-22 2016-06-29 Yamaha Hatsudoki Kabushiki Kaisha Système et procédé de commande de l'angle de tangage et véhicule

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994012374A1 (fr) * 1992-11-28 1994-06-09 Peraves Aktiengesellschaft Systeme de freinage hydraulique mixte pour vehicules a deux roues et vehicule a deux roues equipe d'un tel systeme de freinage
JPH09309482A (ja) * 1996-05-21 1997-12-02 Nissin Kogyo Kk 自動二輪車用ブレーキ装置
EP2311699A1 (fr) * 2009-10-16 2011-04-20 Yamaha Hatsudoki Kabushiki Kaisha Système de freinage pour motocyclette
EP3037309A1 (fr) * 2014-05-22 2016-06-29 Yamaha Hatsudoki Kabushiki Kaisha Système et procédé de commande de l'angle de tangage et véhicule

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024180265A1 (fr) * 2023-02-28 2024-09-06 Xiu Rdi, S.L. Système de frein combiné pour motocyclettes

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