Abstract: The vehicular brake device includes a determination unit, a ratio setting unit, and the control unit. The determination unit determines the operating condition of a vehicular brake device. The ratio setting unit sets, on the basis of the result of determination by the determination unit, a first ratio which is the ratio of a wheel pressure generated by a piston drive unit to a target wheel pressure, and a second ratio which is the ratio of a wheel pressure generated by a hydraulic pressure adjusting unit to the target wheel pressure. The control unit controls the piston drive unit and the hydraulic pressure adjusting unit on the basis of the first ratio and the second ratio.

Abstract: The pressure sensor functions as a first detection portion for detecting hydraulic pressure set according to operation of a brake pedal. The control unit detects the hydraulic pressure acting on the second piston portion through the pipe. The control unit controls differential pressure in the detected hydraulic pressure to a target value set according to vehicle speed.

Abstract: A braking device for the motorcycle is configured to permit actuation control in an interlocking manner of a rear-wheel brake caliper and a front-wheel brake caliper based on an operation of a brake pedal. The braking device includes a hydraulic pressure detector for detecting rear-wheel brake hydraulic pressure caused by the operation of the brake pedal; a determining portion that determines whether or not a detected value by the hydraulic pressure detector is a predetermined value or more; and a hydraulic pressure controller that, when it is determined by the determining portion that the detected value is the predetermined value or more, changes a rising rate of the rear-wheel brake hydraulic pressure to a value lower than a rising rate during a period until the time when the rear-wheel brake hydraulic pressure reaches the predetermined value to control the rear-wheel brake hydraulic pressure, and also controls front-wheel brake hydraulic pressure.

Abstract: To prevent deterioration of sports driving performance due to the actuation of an ABS in a front-wheel and rear-wheel interlocking brake system of a brake-by-wire system. A brake interlock determining portion starts a front-wheel brake when input hydraulic pressure by a brake operation (pedal operation) on a rear-wheel becomes equal to or greater than an interlocking brake starting pressure value. A threshold selecting switch allows switching of the interlocking brake starting pressure value between when the ABS is active and when the ABS is inactive. When the ABS is active, a lower pressure value is selected as the interlocking brake starting pressure value. When the ABS is inactive, an upper pressure value is selected as the interlocking brake starting pressure value.

Abstract: In a motorcycle including a vehicle body frame, an engine supported by the vehicle body frame, an air cleaner box arranged above of the engine, and an ABS module capable of decompressing brake pressures of front and rear wheels, the ABS module is arranged at a position above the engine, rearward of the air cleaner box, in proximity to the left inlet port and a right inlet port of the air cleaner box for sucking outside air, and in suction routes of the left inlet port and the right inlet port. Therefore, a cooling effect with respect to an ABS module to suppress a thermal influence on the ABS module can be secured.

Abstract: A brake device 10 for a motorcycle is capable of electrically performing driving so as to control a front wheel brake caliper 16 and a rear wheel brake caliper 18 in response to each operation of a brake lever 12 and a brake pedal 14 and is configured so that the rear wheel brake caliper 18 and the front wheel brake caliper 16 can be combined based on the operation of the brake pedal 14. The brake device 10 performs correction of a target hydraulic pressure acting on the front wheel brake caliper 16 using a prescribed preset function in such a manner as to give a braking force smaller than a braking force corresponding to an additional operation of the brake lever 12 when the brake lever 12 is additionally operated in the state where the brake pedal 14 is operated and the front wheel brake caliper 16 is generating braking force in combination with the rear wheel brake caliper 18.

Abstract: A brake system is disclosed. The brake system includes a front brake, a rear brake, a right brake lever for operating the front brake, and a left brake lever for operating the rear brake. The brake system also includes a brake pedal for operating the front brake and rear brake such that the front brake and rear brake work in an interlocked manner.

Abstract: A method for reducing the braking distance for a vehicle having an anti-lock braking mechanism (ABS) and a hydraulic braking system detects a brake pressure requested by the vehicle's driver (Prequested), and calculates the brakes pressure values at which the wheels of the vehicle lock. A maximum brake pressure value of these different brake pressure values is then compared with the driver's requested brake pressure value (Prequested). If the requested brake pressure value is much higher than the maximum brake pressure value, then the actual brake pressure applied at different wheels (Pactual) is set to a level below the requested brake pressure (Prequested), but still higher than the maximum brake pressure value. This reduces the amount of work required to be done by the ABS in pumping the excessive brake fluid out of the braking system of the vehicle, and allows for precise control of ABS mechanism during wheel slip conditions.

Abstract: A brake control device for a brake system. The control device can perform both an interlocking brake control and an antilock brake control. The brake system includes a front-wheel hydraulic circuit, a front-wheel-side braking part; a rear-wheel hydraulic circuit, a rear-wheel-side braking part; and an electrically-operated pump which pressurizes the brake fluid. The brake control device includes a usual voltage mode where the interlocking brake control or the anti-lock brake control is performed when the supply voltage is a first voltage or more, and a low voltage mode where at least one of the interlocking brake control and the anti-lock brake control is performed in a limited manner when the supplied voltage is a second, lower voltage. An operation mode is changed from the usual voltage mode to the low voltage mode when it is determined that the supply voltage becomes lower than the first voltage.

Abstract: A brake apparatus that can achieve front-rear distribution in accordance with a traveling environment variation. At an intermediate point from a start point of a second mode, first interval to an end point of a second mode, second interval, the increasing rate of braking force for a front wheel with respect to an operation amount is changed. The increasing rate of the operation amount prior to the intermediate point can be represented by a first inclination of a curve while the increasing rate of the operation amount after the intermediate point is represented by a second inclination of the curve. The first inclination is less than the second inclination. Setting the increasing rate after an intermediate point to be higher than the increasing rate before the intermediate point, the vehicle body generation deceleration can be caused to increase in a linear proportion to the operation amount.

Abstract: A lean angle detection sensor detects a lean angle of a vehicle. A storage portion stores a second relationship that represents a ratio of a braking force of a front wheel brake to a target braking force for each lean angle and/or a third relationship that represents a relationship with a ratio of the braking force of a rear wheel brake to a target braking force for each lean angle. A ratio setter determines which second relationship to refer to among the second relationships stored in the storage portion based on a detection result input to a detection result input portion and/or determines which third relationship to refer to among the third relationships stored in the storage portion based on a detection result input to a detection result input portion. The ratio setter sets a ratio of the braking force of the front wheel brake and the braking force of the rear wheel brake based on the second relationship and/or the third relationship.

Abstract: An interlocking brake system structure provides braking force in response to a force caused by operation of brake levers even when disk brakes are used for both front and rear wheel brakes. A saddle riding type vehicle includes an interlocking brake lever on a second handle from among the left handle and the right handle to interlock a front wheel brake device and a rear wheel brake device. An operation force distributor distributes operation force, caused by an operation of the interlocking brake lever, between the front wheel brake device and the rear wheel brake device. An interlocking wire receives and transmits the operation force distributed at the operation force distributor to the front wheel brake device.

Abstract: A motorcycle sets a target slip value based on an accelerator operation by a driver, and prevents a significant decrease in the output torque of the drive power source during execution of traction control to provide a comfortable ride. The motorcycle includes a target slip value calculating section that calculates a target slip value, based on an accelerator operation by a driver; and an actual slip value calculating section that calculates an actual slip value, based on the difference between the rotation speed of the front wheel and the rotation speed of the rear wheel. The motorcycle further includes a drive power source controller arranged and programmed to reduce the output torque of the drive power source, based on the difference between a criterion value different from the target slip value and the actual slip value when the actual slip value is lower than the target slip value.

Abstract: A standard foot-operated rear brake system on a motorcycle is converted to a hand-operated brake assist system by mounting a pneumatic cylinder in close proximity to the rear brake foot pedal such that, when pressurized, the piston of the pneumatic cylinder extends to depress the rear brake foot pedal. The pneumatic cylinder is controlled by a switch on the handlebar.

Abstract: A brake control system includes at least a pair of brake systems respectively connected to a pair of brake operating members L1, L2, and a control unit 10 for controlling the brake forces of the pair of brake systems interlockingly according to a predetermined distribution ratio by operating one of the pair of brake operating members L1, L2. The control unit 10 executes a decreasing control on the brake forces in such a manner that, when releasing the pair of brake operating members L1, L2, the control unit 10 decreases both of the brake forces together, even in a state where the control unit performs the interlocking control so as to decrease the brake force of one of the brake system as the brake force of the other of the brake system is increased in accordance with the predetermined distribution ratio.

Abstract: A braking device of a saddle-ride type vehicle that can reduce a load acting on a joint is provided. A joint 200 at a front-wheel brake output side which connects a metal pipe and a flexible brake hose is mounted on a body frame 2 via a mount rubber 260 under a floating state.

Abstract: The invention relates to a hydraulic brake system and a method for controlling a hydraulic brake system for a land vehicle having a predetermined holding capacity for hydraulic fluid and at least one wheel brake. The invention is characterized by detecting if a current holding capacity of the brake system has increased in relation to the predetermined holding capacity and, if so, by feeding hydraulic fluid to the at least one wheel brake in a controlled manner and an amount corresponding at least to the increase in capacity.

Abstract: A master cylinder for a hydraulic brake or clutch system, in particular, a handlebar steered vehicle, in particular a bicycle, comprises a housing containing a cylinder chamber, in which are disposed a piston slidable therein and a pressure chamber. A compensation chamber is connected with the pressure chamber through at least one compensation bore. Also provided is a cover closing the housing and a counterpart for mounting the master cylinder on a handlebar tube. Further provided is at least one connecting device for connecting the counterpart with the housing of the master cylinder. Included with the connecting device is a first connecting portion for connecting the cover with the housing of the master cylinder and a second connecting portion for connecting the counterpart with the master cylinder and for mounting the master cylinder on a handlebar tube.

Abstract: A reduction in size, weight and cost of a brake system of a motorcycle provided with a circulating-type ABS is achieved by a brake system provided with a circulating-type ABS and a by-wire-type brake system. In the brake system, solenoid valves, hydraulic pressure sensors, accumulators and pumps are integrated into a unit, and concurrently stroke simulators are attached to the unit as separate bodies.

Abstract: A brake apparatus for a two-wheeled vehicle includes a hydraulic brake, which receives a hydraulic force to thereby generate a braking force, and a braking force control unit, which controls the braking force by increasing or decreasing the hydraulic pressure. The two-wheeled vehicle includes an engine disposed between a front wheel and a rear wheel. The engine includes a crankcase disposed downward thereof and a cylinder extending upwardly from a front portion of the crankcase. The braking force control unit is disposed in a space surrounded by the cylinder at a position forward thereof and the crankcase at a position downward thereof, respectively. The brake apparatus for a two-wheeled vehicle is capable of promoting enhanced maneuverability, achieving sufficient durability performance, and improving electric connection performance.

Abstract: The present invention provides a motorcycle braking device which can perform a control which does not give discomforts to a rider in a front and rear wheel interlocking brake control by taking a manipulation of the rider into consideration. In the motorcycle braking device according to the present invention, in a front and rear wheel interlocking brake control, an additional target pressure associated with a brake input pressure of one of a front wheel hydraulic circuit and a rear wheel hydraulic circuit is applied to another wheel driven by the front wheel hydraulic circuit or the rear wheel hydraulic circuit.

Abstract: A braking system includes first pressure sensors 35, 35 which are provided to braking pipes 41, 41 which constitute first input-side pressure sensors for detecting a liquid pressure on a front-wheel-master-cylinder-25 side and a rear-wheel-master-cylinder-82 side, and second pressure sensors 36, 36 which are provided at positions closer to a stroke-simulator-28 side than second solenoid-operated valves 31, 31 of braking pipes 27,27 which constitute second input-side pressure sensors for detecting a liquid pressure on the stroke-simulator-28 side.

Abstract: In a brake system for a motorcycle in which a pressure-regulating unit is interposed between a wheel brake and fluid pressure generating unit capable of generating a fluid pressure independently of an operation of a brake operating element is controlled by a control unit based on a value detected by an operating amount detector which detects an operating amount of the brake operating element. To prevent adverse influences of not only vibrations from an engine, but also heat from the engine, from being exerted on the pressure-regulating unit, such is floatingly supported by a support supported on a body frame of the motorcycle through an elastic case covering the pressure-regulating unit.

Abstract: In a brake system for a motorcycle in which the operation of a pressure-regulating unit interposed between fluid pressure generator and a wheel brake is controlled by a control unit on the basis of a value detected by operating amount detector for detecting an operating amount of a brake operating element, to prevent the influence of vibrations transmitted from an engine from being exerted on the pressure-regulating unit. A support member for supporting the pressure-regulating unit is flexibly supported, though elastic members, by a pair of frame sections which are arranged on both the left and right sides of an engine body and by a crossmember which connects both the frame sections to each other on the rear side of the engine body so as to constitute a part of a body frame F together with the frame sections.

Abstract: To improve brake force in front and rear combined brake control, a brake control device includes a front wheel brake caliper having at least two front wheel cylinders, and a rear wheel brake caliper having a rear wheel cylinder. A front wheel brake conduit is disposed between a front wheel master cylinder and one of the front wheel cylinders, and a rear wheel brake conduit is disposed between a rear wheel master cylinder and the rear wheel cylinder. A pressure amplification conduit branches from a first position in the rear wheel brake conduit and merges with the rear wheel brake conduit at a second position downstream of the first position. A combined brake conduit branches from a third position in the rear wheel brake conduit positioned downstream of the first position and is coupled to the other of the front wheel cylinders. A first switch control valve is disposed between the first position and the third position in the rear wheel brake conduit.

Abstract: A brake control system of a motorcycle is provided which can suppress a malfunction of an anti-lock braking system applied to a rear wheel which would be caused by an abnormal speed difference between the front and rear wheels. A threshold value for a skid rate for the rear wheel is kept to a second skid rate threshold value until a time when a predetermined condition is established. The second skid rate threshold value is larger than a first skid rate threshold value that is usually employed.

Abstract: A brake apparatus that can achieve front-rear distribution in accordance with a traveling environment variation. At an intermediate point from a start point of a second mode, first interval to an end point of a second mode, second interval, the increasing rate of braking force for a front wheel with respect to an operation amount is changed. The increasing rate of the operation amount prior to the intermediate point can be represented by a first inclination of a curve while the increasing rate of the operation amount after the intermediate point is represented by a second inclination of the curve. The first inclination is less than the second inclination. Setting the increasing rate after an intermediate point to be higher than the increasing rate before the intermediate point, the vehicle body generation deceleration can be caused to increase in a linear proportion to the operation amount.

Abstract: A hydraulic motorcycle brake system whose brake circuits are provided with a valve circuit which prevents the pressure which can be generated by the pump from reacting on the manually activated or foot-activated master brake cylinder.

Abstract: An object of the invention is to provide a braking control system of a two-wheeled motor vehicle, by which when a front-and-rear-wheel-interlocked brake operates, operation feeling of a brake lever is improved, and consequently more natural operation feeling may be provided. A braking control system of a two-wheeled motor vehicle according to the invention performs front-and-rear-wheel-interlocked braking control that allows a front-wheel brake and a rear-wheel brake to operate in an interlocked manner. The front-wheel brake is configured of a front-wheel first brake and a front-wheel second brake. ECU 400 controls a front-wheel hydraulic circuit 100 so that the first brake operates according to the front-and-rear-wheel-interlocked braking control. Furthermore, the ECU 400 controls the front-wheel hydraulic circuit 100 so that the front-wheel second brake receives hydraulic pressure caused along with operation of a brake lever 101 during performing the front-and-rear-wheel-interlocked braking control.

Abstract: A method and a device for detecting the initiation of a starting process of a motorcycle are disclosed. The method includes the step of acquiring a throttle valve angle (?), an engine speed (nengine) or both the throttle valve angle (?) and the engine speed (nengine). The method further includes the step of analyzing the throttle valve angle (?), the engine speed (nengine) or both the throttle valve angle (?) and the engine speed (nengine) to detect the initiation of the starting process of the motorcycle. The device includes both a means for acquiring and a means for analyzing the throttle valve angle (?), the engine speed (nengine) or both the throttle valve angle (?) and the engine speed (nengine).

Abstract: To enable, with respect to a vehicle whose vehicle body is easily lifted to a relatively large extent even in a relatively early stage when rear wheel lifting is detected, more rapid and reliable securement of the safety of the vehicle body with respect to that rear wheel lifting. When lifting of a rear wheel is detected, in contrast to what has conventionally been the case, pressure reduction of brake pressure of a front wheel is immediately started (S100, S102) regardless of whether or not there is occurrence of skidding of the front wheel, a stepwise reduction of brake pressure is performed while lifting of the rear wheel is being detected, and when the integrated amount of that amount of pressure reduction reaches a predetermined value, pressure reduction is ended even in a state where rear wheel lifting is being detected.

Abstract: An electronic brake system and a method for regulating the brake pressure in an electronically-controlled brake system of a motorcycle are provided. The method includes the step of actively building a brake pressure in a wheel brake circuit to prevent a motorcycle from moving. The method further includes the step of maintaining the brake pressure in the wheel brake circuit once (i) the motorcycle comes to a standstill or is at a standstill or is approximately at a standstill, and (ii) an activation condition is fulfilled.

Abstract: A brake system for a motorcycle includes a pressure-regulating unit interposed between a fluid pressure-generating unit and a wheel brake. The operation of a pressure-regulating unit is controlled by a control unit on based on a value detected by an operating amount detector. The fluid pressure-generating unit is arranged between an engine body mounted on a body frame and an exhaust pipe extending from the engine body. The exhaust pipe is connected to the front surface of a cylinder head of the engine body, and is extended downwardly from the cylinder head. A support member for supporting the fluid pressure-generating unit is supported, through elastic members, by the engine body and frame members of a body frame of the motorcycle. The body frame extends rearwardly downwards from a head pipe connected to the body frame at a front end portion thereof.

Abstract: In a brake system for a motorcycle in which the operation of a pressure-regulating unit interposed between fluid pressure-generating unit and a wheel brake so as to regulate an output fluid pressure of the fluid pressure-generating unit and to apply the regulated fluid pressure to the wheel brake is controlled by a control unit on the basis of a value detected by operating amount detector for detecting an operating amount of a brake operating element, to arrange the fluid pressure-generating unit in a location which is close to the pressure control unit disposed on the rear side of an engine body and in which an installation space is easy to secure. The fluid pressure-generating unit, laid out in plan view between a left-right pair of seat rails which constitute a part of a body frame and which support a riders' seat, is supported by the seat rails.

Abstract: A brake system for a motorcycle includes a pressure-regulating unit interposed between a fluid pressure-generating unit and a wheel brake. Operation of a pressure-regulating unit is managed and controlled by a control unit, based primarily on an applied force detected by an operating amount detector. The fluid pressure-generating unit is disposed between an engine body, mounted on a body frame, and an exhaust pipe which is connected to a front surface of a cylinder head of the engine body, and which extends downwardly from the cylinder head. The fluid pressure-generating unit is arranged on the body frame such that, during operation of the motorcycle, the fluid pressure-generating unit is substantially shielded and isolated from heat emitted by the engine body and the exhaust pipe.

Abstract: The present invention provides a hydraulic brake apparatus of a motorcycle, including a main frame having a pair of right and left frame members extending rearward from a head pipe, and equipment arranged in a space between the right and left frame members, the hydraulic brake apparatus further including at least one brake fluid pipe, wherein the at least one brake fluid pipe is arranged so as to extend rearward from near the head pipe along an upper surface at least one of the frame members.

Abstract: A vehicular brake hydraulic pressure control device has a first operation unit T1 including a first brake operation element; a first brake system K1 for braking a first wheel brake R corresponding to the first operation unit T1; and a first control valve unit A and B for controlling brake hydraulic pressure in the first brake system. In the device, the first operation unit T1 and the first brake system K1 are separated so as not to flow a brake fluid, and the device further comprises a brake fluid tank 30 having a reservoir function for supplying the brake fluid to the separated first brake system K1.

Abstract: To predictively determine the occurrence of rear wheel lifting before actual lifting of a rear wheel occurs and enable control of brake force. Vehicle body deceleration is computed on the basis of wheel velocities obtained by wheel velocity sensors 45 and 46 (S102), and when it is determined that that computed value exceeds a predetermined value K1 (S104), then the pressure of a front wheel cylinder 3 is reduced by a predetermined pressure and held at that reduced pressure (S106), and when it is determined that vehicle body deceleration has fallen below a value that is, for example, lower by a predetermined value ? than the predetermined value K1 (S108), then the state of holding of the pressure of the front wheel cylinder 3 is released (S110) and brake control returns to normal brake control.

Abstract: The present invention provides a motorcycle braking device which can perform a control which does not give discomforts to a rider in a front and rear wheel interlocking brake control by taking a manipulation of the rider into consideration. In the motorcycle braking device according to the present invention, in a front and rear wheel interlocking brake control, an additional target pressure associated with a brake input pressure of one of a front wheel hydraulic circuit and a rear wheel hydraulic circuit is applied to another wheel driven by the front wheel hydraulic circuit or the rear wheel hydraulic circuit.

Abstract: A motorcycle with a disk brake device and an anti-dip device for improving the external appearance of the front forks and for simplifying the fixing of the hoses. A single hose includes a hydraulic passage k extending from a secondary master cylinder and one end of the hose is connected to one opening of a three-way opening coupling fixed to the front forks. One end of a single hose is supported by the secondary master cylinder and the other end is supported by the three-way opening coupling. Thus the hose clamps may be omitted, the number of components is conspicuously reduced and the arrangement is simplified. In comparison to extending two hoses from the secondary master cylinder, only a single hose is extended according to the present invention. Thus, the handling of the hoses is simplified and the outer appearance near the front forks is improved.

Abstract: In a dual-circuit hydraulic motorcycle brake system with two hand or foot-operated master cylinders, at the commencement of the pump operation in one of the brake circuits, the change-over valve (20) and/or the separating valve (19) of that brake circuit assume a switching position in which the pressure which can be generated by the pump (9) is prevented from causing a reactive effect on the associated hand-operated or foot-operated master brake cylinder (7, 13). To this end, the separating valve (19) in the brake line may be switched to a closed or throttling position, while the change-over valve (20) in the suction path is closed. Alternatively, both the change-over valve (20) and the separating valve (19) can be opened at the same time so that the pump conveys brake fluid in a circle.

Abstract: A locking mechanism for installing between a master cylinder and a brake line includes a housing having an internal bore, an inlet port, a passage, and an outlet port. A reciprocating piston is movable within the bore. A locking lever is coupled to the reciprocating piston for actuating the reciprocating piston. A fastener having an internal fluid passage for providing fluid communication between the passage and the master cylinder secures the housing to the master cylinder. The locking lever is moveable between a first position, wherein the hydraulic fluid can flow freely between the master cylinder and the brake line for engaging and disengaging the vehicle brake and a second position, wherein the hydraulic fluid is prevented from returning to the master cylinder for maintaining the vehicle brake in an engaged state.

Abstract: A braking device for a motorcycle for controlling a sudden increase in the braking force caused by a time lag from the time the amount of operation of a brake operating portion is detected until a change in hydraulic pressure of wheel braking means for improving the feel of braking. An input-side pressure sensor detects a master cylinder pressure and a hydraulic modulator creates a hydraulic pressure to be exerted on a brake caliper. A controller is provided for controlling the hydraulic pressure created by the hydraulic modulator in accordance with a detected signal provided from the input-side pressure sensor. In accordance with a change in the quantity per unit time of the detected signal provided from the input-side pressure sensor the controller limits a change speed of the hydraulic pressure created by the hydraulic modulator.

Abstract: A motorcycle includes front and rear brakes that respectively brake a front wheel and a rear wheel, an ABS unit that controls braking force of the brakes, pipes connecting each of the brakes and the ABS unit, a swing arm swingably supported on a body frame, and a rear cushion unit connecting the swing arm to the body frame and located in front of the rear wheel which is supported on a rear end portion of the swing arm. Further, the rear cushion unit is located on a body centerline, extending longitudinally while passing through the center in a vehicle width direction. Additionally, the ABS unit is located rearward of the rear cushion unit and on the body centerline.

Abstract: To detect a failure of a compressed air consumer circuit in a compressed air system for vehicles, pressure is continuously measured in compressed air consumer circuits and evaluated in an electronic control unit which compares the pressure values and/or determined negative pressure gradients of the compressed air consumer circuits with a respective threshold value and shuts off an air-consumer circuit if the pressure values and/or negative pressure gradients thereof satisfy a circuit-failure criterion. The circuit-failure criterion is satisfied when the pressure values and/or pressure gradients are below the respective threshold value for a time equal to or longer than the time of a dynamic pressure change or of a dynamic pressure collapse.

Abstract: To enhance a brake feel of a motorcycle adopting a combined brake system. In a braking device for adjusting hydraulic pressure supplied to a brake caliper at a rear wheel according to hydraulic pressure at a front wheel produced by a brake operation at the front wheel of a motorcycle, a pattern for adjusting a brake caliper pressure at the rear wheel is different between a case when a temporal increasing rate of master cylinder pressure at the front wheel is equal to or exceeds a predetermined value and a case when the temporal increasing rate is below the predetermined value. Further, to provide a braking device for a motorcycle wherein a variation of a vertical load of a rear wheel when a brake is applied at a front wheel is inhibited.

Abstract: A brake device 10 for a motorcycle is capable of electrically performing driving so as to control a front wheel brake caliper 16 and a rear wheel brake caliper 18 in response to each operation of a brake lever 12 and a brake pedal 14 and is configured so that the rear wheel brake caliper 18 and the front wheel brake caliper 16 can be combined based on the operation of the brake pedal 14. The brake device 10 performs correction of a target hydraulic pressure acting on the front wheel brake caliper 16 using a prescribed preset function in such a manner as to give a braking force smaller than a braking force corresponding to an additional operation of the brake lever 12 when the brake lever 12 is additionally operated in the state where the brake pedal 14 is operated and the front wheel brake caliper 16 is generating braking force in combination with the rear wheel brake caliper 18.

Abstract: To enable, with respect to a vehicle whose vehicle body is easily lifted to a relatively large extent even in a relatively early stage when rear wheel lifting is detected, more rapid and reliable securement of the safety of the vehicle body with respect to that rear wheel lifting. When lifting of a rear wheel is detected, in contrast to what has conventionally been the case, pressure reduction of brake pressure of a front wheel is immediately started (S100, S102) regardless of whether or not there is occurrence of skidding of the front wheel, a stepwise reduction of brake pressure is performed while lifting of the rear wheel is being detected, and when the integrated amount of that amount of pressure reduction reaches a predetermined value, pressure reduction is ended even in a state where rear wheel lifting is being detected.

Abstract: To predictively determine the occurrence of rear wheel lifting before actual lifting of a rear wheel occurs and enable control of brake force. Vehicle body deceleration is computed on the basis of wheel velocities obtained by wheel velocity sensors 45 and 46 (S102), and when it is determined that that computed value exceeds a predetermined value K1 (S104), then the pressure of a front wheel cylinder 3 is reduced by a predetermined pressure and held at that reduced pressure (S106), and when it is determined that vehicle body deceleration has fallen below a value that is, for example, lower by a predetermined value ? than the predetermined value K1 (S108), then the state of holding of the pressure of the front wheel cylinder 3 is released (S110) and brake control returns to normal brake control.

Abstract: A locking mechanism for installing between a master cylinder and a brake line includes a housing having an internal bore, an inlet port, a passage, and an outlet port. A reciprocating piston is movable within the bore. A locking lever is coupled to the reciprocating piston for actuating the reciprocating piston. A fastener having an internal fluid passage for providing fluid communication between the passage and the master cylinder secures the housing to the master cylinder. The locking lever is moveable between a first position, wherein the hydraulic fluid can flow freely between the master cylinder and the brake line for engaging and disengaging the vehicle brake and a second position, wherein the hydraulic fluid is prevented from returning to the master cylinder for maintaining the vehicle brake in an engaged state.