Braking device for motorcycle

A braking device for a motorcycle allowing interlocking control comprising:

• a rear-wheel brake adapted to be operatively connected to a rear-wheel;
• a front-wheel brake adapted to be operatively connected to a front-wheel;
• a rear-wheel operating unit operatively connected to the rear-wheel for providing interlocking control of said rear-wheel brake and said front-wheel brake based on an operation of the rear-wheel brake operating unit;
• a first pressure sensor on an output side of a caliper of the rear-wheel brake;
• a second pressure sensor on an output side of the rear-wheel brake operating unit;
• an electronic control unit (ECU) which includes:
• a manipulated variable detector for receiving a detection signal from the second pressure sensor;
• an electromagnetic valve controller for controlling an opening and a closing of on-off valves of the braking device;
• a hydraulic pressure detector for detecting a rear-wheel brake caliper pressure from the first pressure sensor caused by the operation of the rear-wheel brake operating unit;
• a determining portion;
• and
• a hydraulic pressure controller,
• wherein when an unintentional operation of the rear-wheel brake operating unit is performed, which causes the determining portion to determine that a first rising rate (Pr0) is either equal to a first predetermined value (Pr1) or is more than the first predetermined value (Pr1), and also causes the rear-wheel brake caliper pressure to exceed a predetermined value (P1) at a time point (t1) with respect to a control of the front-wheel and rear-wheel brakes after the time point (t1), and
• causes the hydraulic pressure controller to change the first rising rate (Pr0) of the rear-wheel brake caliper pressure to a second rising rate (Pr2) which is a value lower than the first rising rate (PT0), and then controls actuation of a hydraulic pressure modulator on a rear wheel, which causes the rear-wheel brake caliper pressure to show a behavior with fluctuations after the time point (t1), and
• causes a front-wheel brake caliper pressure to rise, after the time point (t1), at third rising rates (Pr3, Pr3′) which are lower relative to a fourth rising rate (Pr4) of the front-wheel brake caliper pressure which would result if there were no pressure rising rate filter control of the front-wheel brake caliper pressure,
• thereby improving a brake control performance and an operational performance of the rear-wheel brake operating unit.

A braking device for rear and front wheels a motorcycle allowing interlocking control comprising:

• a rear-wheel brake;
• a front-wheel brake;
• a rear-wheel operating unit operatively connected to the rear-wheel for providing interlocking control of said rear-wheel brake and said front-wheel brake based on an operation of the rear-wheel brake operating unit;
• a first pressure sensor on an output side of a caliper of the rear-wheel brake;
• a second pressure sensor on an output side of the rear-wheel brake operating unit;
• an electronic control unit (ECU) which includes:
• a manipulated variable detector for receiving a detection signal from the second pressure sensor;
• an electromagnetic valve controller for controlling an opening and a closing of on-off valves of the braking device;
• a hydraulic pressure detector for detecting a rear-wheel brake caliper pressure from the first pressure sensor caused by the operation of the rear-wheel brake operating unit;
• a determining portion;
• and
• a hydraulic pressure controller,
• wherein when an unintentional operation of the rear-wheel brake operating unit is performed, which causes the determining portion to determine that a first rising rate (Pr0) is either equal to a first predetermined value (Pr1) or is more than the first predetermined value (Pr1), and also causes the rear-wheel brake caliper pressure to exceed a predetermined value (P1) at a time point (t1) with respect to a control of the front-wheel and rear-wheel brakes after the time point (t1), and
• causes the hydraulic pressure controller to change the first rising rate (Pr0) of the rear-wheel brake caliper pressure to a second rising rate (Pr2) which is a value lower than the first rising rate (Pr0), and then controls actuation of a hydraulic pressure modulator on a rear wheel, which causes the rear-wheel brake caliper pressure to show a behavior with fluctuations after the time point (t1), and causes a front-wheel brake caliper pressure to rise, after the time point (t1), at third rising rates (Pr3, Pr3′) which are lower relative to a fourth rising rate (Pr4) of the front-wheel brake caliper pressure which would result if there were no pressure rising rate filter control of the front-wheel brake caliper pressure,
• thereby improving a brake control performance and an operational performance of the rear-wheel brake operating unit,
• wherein the first rising rate (PT0) of the rear-wheel brake caliper pressure is prestored as a function or a map.