Lewmar 2019

www.lewmar.com Pump Drives The real art of achieving an integrated system installation that is efficient and trouble-free is the design of the pump drive system. Lewmar have hundreds of designs that have been giving reliable service for years. The design of such a system is a very careful balance between the performance characteristics of the power source (main engine, gearbox or generator), choice of thruster drive motor, and set up of the control system. Lewmar specify variable displacement pump and fixed displacement pump drive systems dependant on system requirements. These systems offer fingertip control of power selection, are extremely energy efficient as you only generate the power demanded and generate less noise.The various types of drive offer different benefits, but all depend on correct engineering. A range of modular valve solutions are available to tailor the hydraulic power for precise control of any individual hydraulic function Careful consultation between Lewmar and the engine manufacturer will assure a pump drive that will give a good spread of power from idle to higher RPM. Obviously some engines are better suited than others but most of the higher torque models will offer good results. Lewmar recommend the fitment of an electromagnetic clutch in order that the pump can be disconnected when not required.This saves energy, heat and noise. A speed trip can also be fitted to ensure that the engine is not stalled at low RPM, or the pump is not damaged at high RPM. Main Engine Pump Drive - PTO (Power Take Off)