A controlling apparatus for an electric shift-by-wire system is disclosed. The apparatus includes a shift stage sensor detecting information on a target shift stage according to the operation of the shift lever; a position sensor detecting information on a position of the motor; and a controller configured to receive the detected information from the shift stage sensor and the position sensor, when the target shift stage is a P stage, determine whether the P stage is likely to be released using the position information of the motor, and when it is determined that the P stage is likely to be released, limit rotation of the motor.

A method for shifting a transmission in a machine. The method includes detecting a request for a directional shift of the transmission and determining a ground speed of the machine in response to the request. The method further includes overriding the request if the ground speed is above a ground speed threshold. Further, the method includes preparing the machine for the directional shift by limiting an output speed of a power source of the machine and by issuing a command to a brake unit of the machine to reduce the ground speed of the machine. Furthermore, the method includes validating and raising the request to the transmission to execute the directional shift if the ground speed is below the ground speed threshold.

A method for shifting a transmission in a machine. The method includes detecting a request for a directional shift of the transmission and determining a ground speed of the machine in response to the request. The method further includes overriding the request if the ground speed is above a ground speed threshold. Further, the method includes preparing the machine for the directional shift by limiting an output speed of a power source of the machine and by issuing a command to a brake unit of the machine to reduce the ground speed of the machine. Furthermore, the method includes validating and raising the request to the transmission to execute the directional shift if the ground speed is below the ground speed threshold.

A control device for automatic transmission of the present invention includes a transmission mechanism and a park lock device. The park lock device has a rod member and a lock mechanism. The lock mechanism restricts movement of the rod member when being in a locked state. If a CPU reset (reset of a CPU constituting an ATCU) occurs, the control device maintains the locked state of the lock mechanism after a return from the CPU reset.

A control device for automatic transmission of the present invention includes a transmission mechanism and a park lock device. The park lock device has a rod member and a lock mechanism. The lock mechanism restricts movement of the rod member when being in a locked state. If a CPU reset (reset of a CPU constituting an ATCU) occurs, the control device maintains the locked state of the lock mechanism after a return from the CPU reset.

A working machine includes a machine body, a prime mover, a traveling device mounted on the machine body, a traveling motor to provide a power to the traveling device and to switch between a first speed and a second speed higher than the first speed, a traveling pump to be driven by the prime mover and to supply operation fluid to the traveling motor, and a controller device including an automatic shifter to automatically shift the traveling motor to the first speed or to the second speed, a timer to count an elapsed time from the automatically shifting, and a shift prohibitor to prohibit the automatically shifting by the automatic shifter when the elapsed time counted by the timer is less than a threshold.

A working machine includes a machine body, a prime mover, a traveling device mounted on the machine body, a traveling motor to provide a power to the traveling device and to switch between a first speed and a second speed higher than the first speed, a traveling pump to be driven by the prime mover and to supply operation fluid to the traveling motor, and a controller device including an automatic shifter to automatically shift the traveling motor to the first speed or to the second speed, a timer to count an elapsed time from the automatically shifting, and a shift prohibitor to prohibit the automatically shifting by the automatic shifter when the elapsed time counted by the timer is less than a threshold.

A method for operating an idling automatic transmission of a motor vehicle having a torque converter, wherein the torque converter comprises at least one pump wheel and a turbine wheel which are designed to transmit a torque hydrodynamically from one to the other. The method comprises at least the following steps: determinating (12) a rotation speed of the turbine wheel; determinating (14) a load on the motor of the motor vehicle; and recognizing (16) whether there is a blockage in the drive-train of the motor vehicle or whether the torque converter is running dry, as a function of the turbine rotation speed and the motor load detected. The invention also relates to a monitoring device (10).

A method for operating an idling automatic transmission of a motor vehicle having a torque converter, wherein the torque converter comprises at least one pump wheel and a turbine wheel which are designed to transmit a torque hydrodynamically from one to the other. The method comprises at least the following steps: determinating (12) a rotation speed of the turbine wheel; determinating (14) a load on the motor of the motor vehicle; and recognizing (16) whether there is a blockage in the drive-train of the motor vehicle or whether the torque converter is running dry, as a function of the turbine rotation speed and the motor load detected. The invention also relates to a monitoring device (10).

A manual shift lever system may be provided that includes: a shift lever which includes a rod and a stopper formed on the rod; a shift lock unit which limits a movement of the rod; and a control unit which, when a speed of a vehicle is greater than a critical speed of a predetermined gear limits the movement of the rod in a shift direction of the predetermined gear. The shift lock unit includes: at least one shift lock cam part including a main cam, a sub-cam, a shaft which functions as a rotating shaft of the main cam and the sub-cam, and a spring which connects the main cam and the sub-cam; a permanent magnet which is connected to the shift lock cam part; and an electromagnet arranged to have a polarity arrangement opposite to that of the permanent magnet.