Patent ID: 8246123

Claim:
A brake control system for a motorcycle, comprising: front and rear wheel speed sensors respectively provided by front and rear wheels of the motorcycle; front and rear wheel braking force control devices that control braking liquid pressures respectively applied to the front and rear wheels; and a control unit that includes: a vehicle running speed calculating section that calculates an estimated running speed of the motorcycle based on an output from the front wheel speed sensor; a skid rate calculating section that calculates a skid rate of each of the front and rear wheels based on a deviation between the estimated running speed of the motorcycle and each of the outputs from the front and rear wheel speed sensors; an anti-lock braking control section that outputs a pressure reduction instruction to at least one of the front and rear wheel braking force control devices when the calculated skid rate of the corresponding front and/or rear wheel is equal to or larger than a predetermined skid rate threshold value; and a skid rate threshold value changing section that keeps a threshold value for the skid rate for the rear wheel to a second skid rate threshold value in a period from a time when the ignition of an engine of the motorcycle is switched on to a time just before a time when a predetermined condition is established and changes the threshold value for the skid rate for the rear wheel to a first skid rate threshold value when the predetermined condition is established, the second skid rate threshold value being larger than the first skid rate threshold value.