Patent ID: 8612116

Claim:
A throttle control system for a throttle-by-wire (TBW) system, the throttle control system comprising: a target throttle opening degree change amount calculating unit configured to calculate a change amount of a target throttle opening degree, wherein the target throttle opening degree is calculated in accordance with an operation opening degree of a throttle operating device, and a throttle valve is driven by a motor in accordance with the target throttle opening degree, wherein the throttle operating device comprises a throttle grip on a steering handlebar of a motorcycle, wherein the throttle control system is configured to perform a throttle valve control at a time of rapid closing operation of the throttle valve, the throttle valve being provided to a throttle body having a full-close stopper defining a fully closed position of the throttle valve, wherein the target throttle opening degree change amount calculating unit is configured to calculate the change amount of the target throttle opening degree on the basis of a difference between a calculated value of the target throttle opening degree at the last time and a calculated value of the target throttle opening degree at this time when the throttle operating device is operated in such a direction that the throttle valve is closed, wherein, when the target throttle opening degree is not more than a predetermined value and when the change amount of the target throttle opening degree becomes not less than a predetermined control start threshold, a limitation is provided on the change amount of the target throttle opening degree, so that the change amount of the target throttle opening degree is set to be smaller than a predetermined normal change amount of the target throttle opening degree, wherein the limitation made on the change amount of the target throttle opening degree is maintained until a time point when the change amount of the target throttle opening degree falls below a predetermined control termination threshold, wherein after a limitation process on the change amount of the target throttle opening degree is terminated, the change amount of the target throttle opening degree is converged to an idling opening degree, wherein the larger the target throttle opening degree, the larger a value the change amount is set to, and wherein the smaller the target throttle opening degree, the smaller a value the change amount is set to.