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Published in:
1983 | OriginalPaper | Chapter
Hydraulic Transmissions
Authors : A. B. Barr, B.Sc., C.Eng., M.I.Mech.E., D. F. G. Hampson, C.Eng., M.I.Mech.E., W. Y. Harper, B.Sc., M.I.Mech.E., A.M.I.R.T.E.
Published in: Lubrication in Practice
Publisher: Macmillan Education UK
Included in: Professional Book Archive
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There are two basic forms of hydraulic power transmission — hydrostatic and hydrodynamic (or hydrokinetic). The hydrostatic drive employs a positive displacement pump and delivers oil to a hydraulic motor, power being transmitted by fluid pressure without great changes in fluid velocity. In the hydrodynamic system a centrifugal-type pump circulates large amounts of oil driving a turbine-type hydraulic motor. Power is transmitted by changes in the fluid velocity.