The ALS project, developed by Walvoil in partnership with Dieci, has been awarded by EIMA as “Technical Innovation 2020-21” and with the “Premio Blu 2020-21“, prestigious acknowledgments dedicated to vehicles and devices that stand out for absolute innovation and environmental issues.
At the heart of Adaptive Load Sensing is an electro-hydraulic device, installed on the directional control valve, which minimizes energy dispersion in the hydraulic system of telescopic handlers, considerably improving the vehicle’s efficiency and reducing wear and fuel consumption.
Hydraulic systems are an essential part of telehandlers to ensure simultaneous control of movements. The hydraulic pump generates a higher pressure than is really needed, a set value called the stand-by margin, which constitutes a considerable loss of energy that limits the vehicle’s overall performance and unnecessarily increases wear and fuel consumption, thereby reducing efficiency and impacting the environment. The ADAPTIVE LOAD SENSING, instead, is capable of modulating the stand-by margin value depending on the vehicle’s actual work needs, automatically changing it only when and by the exact amount required.
ALS consists of a directional control valve, an electronic joystick and an electronic control unit, with customizable modular software developed by Walvoil. The control unit collates information from the operator’s actions on the machine’s controls and sensors, and acts on the load sensing device, adapting the hydraulic pressure differential to the maximum efficiency value required by the vehicle. Furthermore, the differential pressure value can be selected at will using two function buttons on the joystick: the “Precision Function”, which increases movement sensitivity and precision, and the Boost Function, which increases the pressure value to achieve faster movement without having to install pumps with a higher flow rate.