A shift-by-wire system physically prevents shifting to the R/N/D gear position and shifting to the P gear position from being simultaneously performed. The shift-by-wire system includes a body configured to have a Hall sensor provided therein, a knob installed so as to be rotatable around an axis of the body, a button assembly moving in an axial direction of the body and having a magnet provided to sense rotated and moved states thereof using the Hall sensor and rotate together with the knob, and a concurrent operation limiting unit to mechanically limit movement of the button assembly in a state in which the knob is manipulated so as to be rotated, and to mechanically limit rotation of the knob in a state in which the button assembly is manipulated so as to be moved.

A shift-by-wire system physically prevents shifting to the R/N/D gear position and shifting to the P gear position from being simultaneously performed. The shift-by-wire system includes a body configured to have a Hall sensor provided therein, a knob installed so as to be rotatable around an axis of the body, a button assembly moving in an axial direction of the body and having a magnet provided to sense rotated and moved states thereof using the Hall sensor and rotate together with the knob, and a concurrent operation limiting unit to mechanically limit movement of the button assembly in a state in which the knob is manipulated so as to be rotated, and to mechanically limit rotation of the knob in a state in which the button assembly is manipulated so as to be moved.

An engine transmission is provided with an interference member that is configured to interfere with one of a low-gear clutch sleeve and a high-gear clutch sleeve so that when one of the low-gear clutch sleeve and the high-gear clutch sleeve is at an engagement position, the other one of the low-gear clutch sleeve and the high-gear clutch sleeve cannot move to an engagement position.

An engine transmission is provided with an interference member that is configured to interfere with one of a low-gear clutch sleeve and a high-gear clutch sleeve so that when one of the low-gear clutch sleeve and the high-gear clutch sleeve is at an engagement position, the other one of the low-gear clutch sleeve and the high-gear clutch sleeve cannot move to an engagement position.

A transmission device for a work vehicle includes an auxiliary transmission including forward gear shift stages for the work vehicle to move forward and a reverse gear shift stage for the work vehicle to move backward. The forward gear shift stages include a low-speed gear shift stage with a largest gear ratio among the plurality of forward gear shift stages, and a medium-speed gear shift stage with a gear ratio closest to a gear ratio of the reverse gear shift stage among the forward gear shift stages.

A method and system for preventing misoperation of an electronic transmission, may include monitoring an operation signal of a transmission and an operation signal of a manipulation device provided around the transmission, by a controller, and upon detecting the operation signal of the transmission immediately after the operation signal of the manipulation device is detected, controlling, by the controller, a gear stage by disregarding the operation signal of the transmission and maintaining a current gear stage.

A method and system for preventing misoperation of an electronic transmission, may include monitoring an operation signal of a transmission and an operation signal of a manipulation device provided around the transmission, by a controller, and upon detecting the operation signal of the transmission immediately after the operation signal of the manipulation device is detected, controlling, by the controller, a gear stage by disregarding the operation signal of the transmission and maintaining a current gear stage.

A vehicle includes an engine, an electric generator, a power transmission device, a clutch, and a power generation controller. The electric generator is coupled to the engine. The power transmission device is configured to transmit driving power of the engine to a vehicle's driving wheel. The clutch is provided in the power transmission device and switchable between an engaged state in which the driving power of the engine is transmitted to the driving wheel and a disengaged state in which the driving power of the engine is not transmitted to the driving wheel. The power generation controller is configured to drive the engine and cause the electric generator to generate electric power by using the driving power of the engine. The clutch is switched to the disengaged state when a driver who drives the vehicle is determined to intend to stop the vehicle for a predetermined period or longer.

A vehicle includes an engine, an electric generator, a power transmission device, a clutch, and a power generation controller. The electric generator is coupled to the engine. The power transmission device is configured to transmit driving power of the engine to a vehicle's driving wheel. The clutch is provided in the power transmission device and switchable between an engaged state in which the driving power of the engine is transmitted to the driving wheel and a disengaged state in which the driving power of the engine is not transmitted to the driving wheel. The power generation controller is configured to drive the engine and cause the electric generator to generate electric power by using the driving power of the engine. The clutch is switched to the disengaged state when a driver who drives the vehicle is determined to intend to stop the vehicle for a predetermined period or longer.

A gear shift (100) is described for a saddle vehicle (M) comprising a shift lever (110), a selecting element (130) actuated through the shift lever (110) and a selector drum (150) connected to the selecting element (130) and adapted to engage gears. The gear shift (100) further comprises a block device (140) functionally connected to the selector dmm (150) and configured so as to be switched between: a first configuration, wherein the block device (140) allows engaging a first gear (I) from a neutral gear (N) in a first change direction (Up), a second configuration, wherein the block device (140) inhibits the subsequent engagement of the neutral gear (N) from the first gear (I) in a second change direction (Dwn). Control means (120) of the block device (140) are further provided, actuated by a rider (G) so as to define a third configuration, wherein the block device (140) is disabled in order to allow engaging the neutral gear (N) from the first gear (I) in the second change direction (Dwn).