US Patent 7846062 Control system and vehicle including the same

A motorcycle includes a transmission, a CPU, an engine, a load sensor and a notification lamp. The load sensor detects a shift operation by a driver. When the shift operation is performed by the driver, an output of the engine is adjusted by the CPU so that a torque (driving force) transmitted between the engine and the transmission is reduced. The CPU does not adjust the output when the torque is transmitted from the transmission to the engine when an up-shifting operation is performed by the driver. Moreover, a notification lamp is lit by the CPU when the torque having at least a predetermined value is transmitted from the transmission to the engine when the up-shifting operation is performed by the driver.