Walvoil Dieci EIMA International. We’re talking about a prize here, practically a mile away. Do you know an application entirely ‘zero kilometer’ made? Walvoil and Dieci have succeeded. Both in the province of Reggio Emilia, in the Italian Motor Valley, a few dozen kilometres from Bologna, home of the EIMA International exhibition centre. Let’s read the official.

Walvoil Dieci EIMA International

Walvoil Dieci EIMA International: a glocal trio

Dieci and Walvoil were awarded with “Technical Innovation 2020-21Award, dedicated to machines and devices with features of ABSOLUTE INNOVATION, and the “Blu Award 2020-21”, attributed to the solutions that outstand for environmental aspects.

The winning project of this collaboration is the ALS – ADAPTIVE LOAD SENSING system; a system that minimizes the dispersion of energy in the hydraulic system of telehandlers, considerably improving the efficiency of the vehicle and consequently obtaining a reduction in wear and consumption.

In which context the solution designed by the synergy between Walvoil and Dieci was born and developed?

Hydraulic systems are an essential part of the most modern and widespread agricultural machinery, especially for telehandlers, which have now become irreplaceable for most companies.

Walvoil Dieci EIMA International
This image predate the obligations to wear face masks and to keep safe distance (editor’s note)

In order to ensure the simultaneous control of movements in these systems, the hydraulic pump generates a pressure higher than what is really necessary, a predetermined value called “Stand-by pressure differential” which  has been considered acceptable until now, but  which implies a considerable loss of energy, limiting the overall performance of the vehicle and unnecessarily increasing wear and consumption, to the detriment of efficiency and environmental impact.

To give a solution to this problem, Walvoil has created the ADAPTIVE LOAD SENSING, a system able to MODULATE the “Stand-by pressure” value according to the REAL WORKING NEEDS of the machine, automatically varying it only when and how required.

ALS System on AGRIPLUS telehandler

In partnership with Dieci, the ALS system has been successfully tested on an AGRIPLUS telehandler, one of the top machines in the Dieci range for Agriculture.

ALS is made of a directional control valve, an electronic joystick, and an electronic control unit, with customizable modular software developed by Walvoil. The control unit collects information from the operations on the controls and from the machine sensors, and acts on the Load Sensing device, adapting the hydraulic pressure differential to the maximum efficiency value required by the vehicle.

The differential pressure value can also be selected by means of two push buttons on the joystick, the “Precision Function“, which increases the movement controllability and precision, and the “Boost Function“, which increases the pressure value for a higher movement speed without need to install pumps with higher flow rates.

During the tests, the Walvoil-Dieci Technical Team found on the Agri Plus a drop in energy dispersion values equal to 28% during boom operations, and up to 45% during traveling phases, with a significant improvement in the overall machine performance at various speeds.

Walvoil Dieci EIMA International

The tests highlighted also further important advantages, first of all in terms of Safety: by acting directly on the hydraulic signal, the ALS avoids the functional complexity associated with the digital signal. Furthermore, in case of failures, the original operation is automatically restored, avoiding machine downtime. Then in terms of Stability: the control of the pressure value allows to improve the machine stability, with a consequent more comfortable use.
And finally, in terms of Modernization (Retrofit): the few elements of the ALS kit can be easily installed even on older telehandlers, extending their operational life and improving their performance.

TASC, “Smart and Clean Agricultural Tractors Project”

The development of the ALS system takes advantage of the collaboration of TASC, “Smart and Clean Agricultural Tractors Project”, a project including the participation of the main university research laboratories of the Emilia Romagna Region, created with the aim of minimizing the environmental impact of agricultural mechanization.


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