TRANSMISSION CONTROL DEVICE OF MOTORCYCLE

摘要

A motorcycle's transmission control device is provided in which, in a case of a clutchless shift operation, disengagement of a fit of gears of a transmission and the fit of subsequent gears thereof can be smoothly achieved. A throttle operation unit controls the degree of opening of a throttle valve to become a first throttle opening-degree when a clutchless shifting unit determines that a clutchless down-shift operation can be implemented, and controls the degree of opening of the throttle valve to become a second throttle opening-degree when the clutchless shifting unit determines that a fit between shift gears is disengaged by the clutchless down-shift operation.

主权项

1. A transmission control device of a motorcycle, comprising:
a manual transmission including a plurality of shift gears for transmitting an output of an engine mounted on the motorcycle to a drive wheel of the motorcycle; a shift operation unit operated by a rider of the motorcycle, for controlling a selection of the plurality of shift gears and a fit between shift gears being selected, and for performing an up-shift operation or a down-shift operation of the manual transmission; a shift-operation detection unit for detecting a state of an up-shift operation or a down-shift operation performed by the shift operation unit; a gear-position determination unit for detecting a state of a selection of the shift gears, and a state of a fit between shift gears being selected; a clutch mounted between the engine and the manual transmission, for connecting or disconnecting between the engine and the manual transmission by an operation of the rider; a clutch connection-state detection unit for detecting a connection state of the clutch; a clutchless shifting unit for performing determination whether or not a clutchless down-shift operation, in which the rider achieves a down-shift operation without disconnecting the clutch based on information from the shift operation unit, the gear-position determination unit and the clutch connection-state detection unit, can be implemented, and for performing determination whether or not a fit between shift gears being selected is disengaged by the clutchless down-shift operation; a throttle operation unit for controlling an amount of intake air into the engine by adjusting a degree of opening of a throttle valve mounted in an intake pipe of the engine; a fuel-injection control unit for controlling an amount of fuel injection into the engine; and an ignition-timing control unit for controlling ignition-timing of the engine, wherein the throttle operation unit controls a degree of opening of the throttle valve to become a first throttle opening-degree when the clutchless shifting unit determines that a clutchless down-shift operation can be implemented, and controls a degree of opening of the throttle valve to become a second throttle opening-degree when the clutchless shifting unit determines that a fit between shift gears being selected is disengaged by the clutchless down-shift operation.