Rolls-Royce to Produce Torque Converter
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THREE sizes of torque converter for L use with oil engines from 60 b.h.p. to 600 h.lap. will shortly be in production by Rolls-Royce, Ltd. They will be built under licence to the Twin Disc Clutch Co., of America.
The torque converter works on the hydro-dynamic principle with a centrifugal fluid pump or impeller driven by the engine and a centripetal motor or turbine driven by the fluid. It is of the three-stage type, in that its turbine has three separate sets of vanes upon which
the jets of fluid impinge in turn. The guide vanes are attached to the stationary casing of the unit.
Torque multiplication at stall of the turbine can be as great as 5,3 times the input torque and its torque htiooutput to input—can vary from 5.3 to I to I to 1 progressively as the speed of the output shaft grows from zero to maximum.
It is important that the converter should be matched both to the engine and to the intended application.