Controls for Hydrostatic Transmissions-Present and Future

Simple displacement and pressure controls were satisfactory for hydrostatic transmissions in the past. Present demands for more work with smaller prime movers have spawned new controls wich improve efficiency and simplify the operator's job to attain it. Future applications have requirements that are as yet undefined, but will demand transmissions with control concepts that can respond to these requirements. Control element modules which may be built up to suit specific needs are one possible way to attain this capability.