1934-01-01

An Analysis of the Lysholm-Smith Hydraulic Torque-Converter 340092

THIS converter is based on the turbine principle. The major parts consist of a pump wheel and a turbine wheel mounted to rotate in a common working chamber in a stationary casing in which the hydraulic or working fluid is circulated in a closed path of flow. The turbine wheel is usually provided with three rings or stages of blading working in conjunction with two rings of stationary guide blades carried by the casing.
Some of the statements made by Mr. Marble in connection with his description of the construction and performance of the converter are that one form, with reverse gear, is designed to transmit power continuously through the hydraulic mechanism; that reverse is effected mechanically, by spur gears, in one of the designs; that the chamber in which the working fluid circulates is maintained completely filled with fluid at all times during the converter's operation; that various fluids may be used as the working fluid; that the converter efficiency is relatively high over a comparatively wide range of speeds; and that the hydraulic efficiency reaches approximately 90 per cent.
After going further into construction detail and quoting performance data obtained from actual foreign service and service in buses of the International Railway Co., Buffalo, N. Y., Mr. Marble concludes his paper with performance statements made by the master mechanic of this company, Mr. Kunz, following block tests and operating tests of the converter.

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