Abstract: A starting operation for a vehicle is carried out in two phases, specifically in a first phase, the input rotational speed is led to a desired rotational speed, and in a following second phase, a rotational speed difference signal formed from the difference between the input rotational speed and the output rotational speed is led to the zero value according to a predetermined desired course. The first phase begins when the starting device is not completely closed and the position of the power control element is below a limit value. The desired rotational speed is first determined as a function of the position of the power control element, the time variation of the position, and a signal describing the driver's driving style. With the determined desired rotational speed, a desired curve of a control signal for an actuator of the starting device is then determined in such a manner that, in the case of the actual position of the power control element, this desired rotational speed is definitely reached.

Abstract: A vehicle power transmission apparatus is provided for maintaining a constant power output when driving a vehicle regardless of the change in the frictional force of the belt in a belt type stepless speed change device. A belt type stepless speed change device is used with a vehicle driving, prime motor on board a vehicle. The apparatus provides a flat characteristic segment covering at least a part of the power output characteristic relative to the revolutions of the vehicle driving prime motor. The apparatus allows the vehicle to be driven by a constant power output within the segment of the flat power output characteristic regardless of changes in the frictional force of the belt in the belt type stepless speed change device.

Abstract: Transmission between electric motor and tool shaft, for instance for hand tools such as an electric screwdriver and the like, which transmission is provided with an adjustable breaking coupling for discontinuing the drive torque on the tool shaft when a predetermined resistance moment on this tool shaft is exceeded, wherein the breaking coupling in the form of two mutually slidable parts is provided with a signal generator for controlling a member influencing the motor feed, which signal generator comes into operation as soon as the two parts slide relative to one another when the set torque is exceeded, so that a disengagement takes place between motor and tool shaft immediately after the desired resistance moment is exceeded, wherein the inertia of the rotating parts no longer has any effect on the tool shaft so that it stops immediately.

Abstract: An electric vehicle drive train includes an electric motor and an associated speed sensor, a transmission operable in a speed reduction mode or a direct coupled mode, and a controller responsive to the speed sensor for operating the transmission in the speed reduction mode when the motor is below a predetermined value, and for operating the motor in the direct coupled mode when the motor speed is above a predetermined value. The controller reduces the speed of the motor, such as by regeneratively braking the motor, when changing from the speed reduction mode to the direct coupled mode. The motor speed may be increased when changing from the direct coupled mode to the speed reduction mode. The transmission is preferably a single stage planetary gearbox.

Abstract: To smoothly perform a shift change by the actuator with a simple structure, a drive motor M as a running drive source is connected with a drive motor electronic motor unit 103 through a FET driver 107. A change motor 61 for driving a shift drum 62 is connected with a change motor electronic control unit 111 through a FET driver 112. When a drive motor electronic control unit 103 outputs the speed change signal on the basis of the detection signal of an accelerator opening sensor 106 and a drive motor rotational speed sensor 104, the output of the driver motor M is temporarily reduced or stopped to release the meshing surface pressure of the gear trains of the transmission T, and during the period thereof, a shift drum 62 is driven by the change motor 61 for performing the shift change. After completion of the shift change, the output of the drive motor M is smoothly increased.

Abstract: A control apparatus of a motor drive vehicle includes a unit for generating a target vehicle speed; a speed instruction unit for generating a target motor rotational speed of the motor based upon a preset motor control pattern in response to the target vehicle speed; a power circuit for operating the motor at the target motor rotational speed upon receipt of the target motor rotational speed; a variable transmission unit for converting a drive output from the motor into a transmission ratio for instructing a rotational speed of the drive output, and transferring the converted transmission ratio to a drive shaft of the motor drive vehicle; and a transmission ratio calculating unit for determining the transmission gear ratio based on the target vehicle speed and the target motor rotational speed thereby to instruct the determined transmission gear ratio to the variable transmission unit.