TWO-WHEELED MOTOR VEHICLE BRAKE CONTROL METHOD AND SYSTEM
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Accused Products
Abstract
To reliably control and prevent rear wheel lifting caused by an abrupt brake operation.
An amount of change in vehicle body deceleration is computed on the basis of detection signals of wheel velocity sensors 45 and 46 (S102), it is determined whether or not that computed value exceeds a predetermined value K1 (S104), and when it is determined that the computed value exceeds the predetermined value K1, then it is determined that there is the potential for rear wheel lifting, reduction of a pressure increase gradient of wheel cylinder pressure is performed (S106) until the amount of change in vehicle body deceleration falls below the predetermined value K1, and lifting of the rear wheel is reliably controlled.
26 Citations
49 Claims
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1-25. -25. (canceled)
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26. A two-wheeled motor vehicle brake control method comprising:
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determining whether or not the value of a predetermined parameter that has been preselected as an index for predicting the potential for lifting of a rear wheel exceeds a predetermined value; and reducing a pressure increase gradient of wheel cylinder pressure when it has been determined that the predetermined parameter exceeds the predetermined value. - View Dependent Claims (30, 34)
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27. A two-wheeled motor vehicle brake control method comprising:
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determining whether or not the value of a predetermined parameter that has been preselected as an index for predicting the potential for lifting of a rear wheel exceeds a predetermined value; and maintaining wheel cylinder pressure at a constant pressure when it has been determined that the predetermined parameter exceeds the predetermined value. - View Dependent Claims (28, 31, 32, 35, 36)
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27-1. A two-wheeled motor vehicle brake control method comprising:
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determining whether or not the value of a predetermined parameter that has been preselected as an index for predicting the potential for lifting of a rear wheel exceeds a predetermined value; and reducing wheel cylinder pressure by a certain amount when it has been determined that the predetermined parameter exceeds the predetermined value.
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37. A two-wheeled motor vehicle brake control system configured to be capable of transmitting oil pressure arising in a front brake master cylinder in response to operation of a first brake operator to a front wheel cylinder via an oil pressure system, capable of transmitting oil pressure arising in a rear brake master cylinder in response to operation of a second brake operator to a rear wheel cylinder via an oil pressure system, and capable of discharging brake fluid of the front wheel cylinder to a front reservoir as desired.
wherein the brake control system is configured to determine whether or not the value of a predetermined parameter that has been preselected as an index for predicting the potential for lifting of a rear wheel exceeds a predetermined value, and discharge the brake fluid of the front wheel cylinder such that a pressure increase gradient of the front wheel cylinder pressure becomes smaller when it has been determined that the predetermined parameter exceeds the predetermined value.
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38. A two-wheeled motor vehicle brake control system configured to be capable of transmitting oil pressure arising in a front brake master cylinder in response to operation of a first brake operator to a front wheel cylinder via an oil pressure system, capable of transmitting oil pressure arising in a rear brake master cylinder in response to operation of a second brake operator to a rear wheel cylinder via an oil pressure system, and capable of discharging brake fluid of the front wheel cylinder to a front reservoir as desired,
wherein the brake control system is configured to determine whether or not the value of a predetermined parameter that has been preselected as an index for predicting the potential for lifting of a rear wheel exceeds a predetermined value, and block off communication between the front brake master cylinder and the front wheel cylinder and maintain the front wheel cylinder pressure at a constant pressure when it has been determined that the predetermined parameter exceeds the predetermined value.
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39. A two-wheeled motor vehicle brake control system configured to be capable of transmitting oil pressure arising in a front brake master cylinder in response to operation of a first brake operator to a front wheel cylinder via an oil pressure systems capable of transmitting oil pressure arising in a rear brake master cylinder in response to operation of a second brake operator to a rear wheel cylinder via an oil pressure system, and capable of discharging brake fluid of the front wheel cylinder to a front reservoir as desired,
wherein the brake control system is configured to determine whether or not the value of a predetermined parameter that has been preselected as an index for predicting the potential for lifting of a rear wheel exceeds a predetermined value, and discharge the brake fluid of the front wheel cylinder such that the front wheel cylinder pressure is reduced by a certain amount when it has been determined that the predetermined parameter exceeds the predetermined value.
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49. A two-wheeled motor vehicle brake control system that features the structure made so as to determine a possibility of rear-wheel lifting when the pressure of the front-wheel cylinder, which is detected by a pressure sensor, becomes or exceeds the prescribed value.
Specification