USING analogies based on our everyday experience with hydraulic phenomena, Mr. Deimel gives here a simple explanation of the operation of an increasingly important mechanism - the hydraulic transmission.
The author then discusses the various problems involved in adopting hydraulic transmissions - both the hydraulic coupling and the torque converter - to motor vehicles; for best performance can be obtained only if the transmission is tailored to the engine and the conditions under which the vehicle operates.
Finally, he describes a special arrangement for testing hydraulic transmissions, because the accuracy required is much higher than that needed in testing engines.