A method for controlling a transmission of a vehicle includes: determining whether a controller receives an acceleration pedal off signal corresponding to a lift foot up (LFU) shift request signal from an acceleration pedal sensor; determining whether an output signal value of a brake pedal sensor detecting a position value of a brake pedal is less than a brake reference value when the acceleration pedal off signal is received; determining whether a gear shifting progressing rate of the transmission performing a LFU shift in response to the LFU shift request signal is less than a progressing rate reference value when an output signal value of the brake pedal sensor is equal to or greater than the brake reference value; and controlling the transmission to hold the LFU shift when the gear shifting progressing rate of the transmission is less than the progressing rate reference value.

A method for controlling a transmission of a vehicle includes: determining whether a controller receives an acceleration pedal off signal corresponding to a lift foot up (LFU) shift request signal from an acceleration pedal sensor; determining whether an output signal value of a brake pedal sensor detecting a position value of a brake pedal is less than a brake reference value when the acceleration pedal off signal is received; determining whether a gear shifting progressing rate of the transmission performing a LFU shift in response to the LFU shift request signal is less than a progressing rate reference value when an output signal value of the brake pedal sensor is equal to or greater than the brake reference value; and controlling the transmission to hold the LFU shift when the gear shifting progressing rate of the transmission is less than the progressing rate reference value.

A method of controlling a transmission of a vehicle, includes determining, by a controller, whether a shift prohibition condition for preventing overheating of the transmission of the vehicle in a terrain mode, which is a rough road driving mode of the vehicle, is satisfied; determining, by the controller, whether a shift operation of the transmission corresponding to a busy shift phenomenon of the transmission is detected when the shift prohibition condition is satisfied; and prohibiting, by the controller, shifting of the transmission when the shift operation of the transmission corresponding to the busy shift phenomenon of the transmission is detected.

A method of controlling a transmission of a vehicle, includes determining, by a controller, whether a shift prohibition condition for preventing overheating of the transmission of the vehicle in a terrain mode, which is a rough road driving mode of the vehicle, is satisfied; determining, by the controller, whether a shift operation of the transmission corresponding to a busy shift phenomenon of the transmission is detected when the shift prohibition condition is satisfied; and prohibiting, by the controller, shifting of the transmission when the shift operation of the transmission corresponding to the busy shift phenomenon of the transmission is detected.

A vehicle comprises an autonomous driving system and a vehicle platform that controls the vehicle in response to a command received from the autonomous driving system. In the vehicle, when a first signal indicates an autonomous mode, the vehicle platform performs a shift change requested through a first command only while the second signal indicates a standstill.

A working vehicle includes: a vehicle body; a linkage device configured to link a working device to the vehicle body; a prime mover provided on the vehicle body; a traveling device configured to cause the vehicle body to travel; a transmission device configured to transmit power from the prime mover to the traveling device and perform a speed change process to change a speed of the vehicle body; an increase-in-speed detection device configured to detect an increase in speed of the vehicle body; and a speed change restraint unit configured such that, during the speed change process performed by the transmission device, when the increase in speed detected by the increase-in-speed detection device has become equal to or greater than a threshold, the speed change restraint unit stops the speed change process performed by the transmission device.

A working vehicle includes: a vehicle body; a linkage device configured to link a working device to the vehicle body; a prime mover provided on the vehicle body; a traveling device configured to cause the vehicle body to travel; a transmission device configured to transmit power from the prime mover to the traveling device and perform a speed change process to change a speed of the vehicle body; an increase-in-speed detection device configured to detect an increase in speed of the vehicle body; and a speed change restraint unit configured such that, during the speed change process performed by the transmission device, when the increase in speed detected by the increase-in-speed detection device has become equal to or greater than a threshold, the speed change restraint unit stops the speed change process performed by the transmission device.

A method of controlling an automatic transmission connected to an engine in a motor vehicle includes receiving an input signal generated via an application of force by a switch inside the vehicle. The switch has a predetermined travel and is configured to request a transmission speed-ratio change via an output signal indicative of the received input signal. The output signal is received via a controller programmed with a permitted engine speed range. The transmission is commanded to execute a change from a currently selected speed-ratio to another speed-ratio if the requested speed-ratio change would generate an engine speed within the permitted engine speed range. The switch is commanded to execute full travel under the application of force if the speed-ratio change in the transmission was commanded. Alternatively, the switch is commanded to execute partial travel under the application of force if the speed-ratio change in the transmission was not commanded.

A method of controlling an automatic transmission connected to an engine in a motor vehicle includes receiving an input signal generated via an application of force by a switch inside the vehicle. The switch has a predetermined travel and is configured to request a transmission speed-ratio change via an output signal indicative of the received input signal. The output signal is received via a controller programmed with a permitted engine speed range. The transmission is commanded to execute a change from a currently selected speed-ratio to another speed-ratio if the requested speed-ratio change would generate an engine speed within the permitted engine speed range. The switch is commanded to execute full travel under the application of force if the speed-ratio change in the transmission was commanded. Alternatively, the switch is commanded to execute partial travel under the application of force if the speed-ratio change in the transmission was not commanded.

A transmission arrangement for a travel drive includes a transmission input that is configured to be coupled to a working machine and a transmission output that is configured to be coupled to an output drive. The transmission arrangement further includes a hydrostatic transmission and a manual transmission coupled in series for the transmission of power between the transmission input and the transmission output. The manual transmission has changeable transmission stages at least when the transmission output is at a standstill. A control device is configured to change the transmission stages.