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While the transmission is in gear, as engine speed increases, torque is transferred from the engine to the input shaft by the motion of the fluid, propelling the vehicle. In this regard, the behaviour of the fluid coupling strongly resembles that of a mechanical clutch driving a manual transmission .
The transmission fluid will quickly overheat, not to mention the repeated impacts on the stator clutch (next topic). Also, overheating transmission fluid causes it to lose viscosity and damage the transmission. Such abuse can in rare cases cause the torque converter to leak and eventually stop functioning due to lack of fluid.
A transmission control unit (TCU), also known as a transmission control module (TCM), or a gearbox control unit (GCU), is a type of automotive ECU that is used to control electronic automatic transmissions. Similar systems are used in conjunction with various semi-automatic transmissions, purely for clutch automation and actuation.
It consisted of a single torque converter for the start-up phase and a fluid coupling for the travel phase which were both mounted on a common shaft. A key feature of this turbo transmission was the filling and emptying of the hydrodynamic circuit, a principle which was first used in Föttinger marine transmissions.
The torque tube consists of a large diameter stationary housing between the transmission and rear end that fully encloses a rotating tubular steel or small-diameter solid drive shaft (known colloquially in the U.S. as a "rope drive" [1]) that transmits the power of the engine to a regular or limited-slip differential. [2]
The size of the tabs or perforations, the number of plates, and the fluid used will determine the strength and onset of this mechanical transfer. This type of device essentially differs from fluid couplings such as torque converters by using the viscosity of the medium to transfer torque, rather than its momentum. This makes it potentially ...
Torsional vibration is the angular vibration of an object - commonly a shaft - along its axis of rotation. Torsional vibration is often a concern in power transmission systems using rotating shafts or couplings, where it can cause failures if not controlled. A second effect of torsional vibrations applies to passenger cars.
Automatic transmission fluid. Automatic transmission fluid (ATF) is a hydraulic fluid that is essential for the proper functioning of vehicles equipped with automatic transmissions. Usually, it is coloured red or green to differentiate it from motor oil and other fluids in the vehicle.
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