Torque Conversion ^[*]

A torque converter can be used where torque and speed have to be transmitted or controlled between a driving and a driven machine in a simple and economical way.

A torque converter is "open" to both sides. It absorbs torque from the driving machine and transmits it according to requirement to the driven machine. This process is governed by the "natural" characteristics of the converter, or can be controlled at will by varying the pitch of the guide blades (adjustable converter).

In both cases, the converter can be incorporated in a process control system. In this prospectus, the attempt is made with examples to concisely yet clearly describe the hydrodynamic torque converter, its characteristics, and its application possibilities.

The most important areas of application are listed in Fig. P-142. Note symbols in Fig. P-143.

Figure P-142: Torque conversion applications. (Source: J. M. Voith GmbH.)

Figure P-143: Symbols for a torque converter and an adjustable torque converter. (Source: J. M. Voith GmbH.)

When is it expedient to use a simple torque converter and when an adjustable one? This varies from case to case. The most important criteria in this decision are the characteristics of the prime mover and the load curve governed by the job to be handled.

What is regulated, what is controlled?

See Figs. P-144 through P-146.

Figure P-144: Using a motor of constant speed and a torque converter without adjustment mechanism, jobs such as startups can be undertaken smoothly and steplessly along the "natural" characteristic...