Many Merlo machines have the advantages of a ‘Load-sensing’ hydraulic system, both on construction and increasingly on farm handlers.

The simpler gear pump driven systems are perfectly satisfactory for many low production applications. However, the increasing size and performance of telehandlers and the use of more and more attachments that require continuous hydraulic flow has led to a need for greater flow rates.

It would be very wasteful to have a huge engine merely to drive the hydraulics, so ‘Load-sensing’ is the answer. A much larger flow pump can be used (150 l/min in the case of many Turbofarmers), which means that speed of operation is much increased.

However, when a load is applied, a management system reduces the flow rate to match the available power of the engine.

Other advantages include a smoother, lower engine speed operation and a reduction in fuel consumption, even when idling. A further refinement is ‘Flow-sharing’ which matches an electronic valve block ensuring positive and proportional control, whatever the load demands of individual circuits.

LS - a high quality variable flow axial piston pump feeds a manual control valve block with proportional flow to two main services.

LSFS - the same pump feeding a ‘Flow-
sharing’ valve block with fully electronic and proportional control of all services. Motion mirrors exactly the movement of the controls, whatever the load imposed on any service.

FASTER - SMOOTHER - PROPORTIONAL FLOW - MORE EFFICIENT - LESS FUEL

Load-sensing and Flow-sharing hydraulic systems

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