PowerfullyEfficient Digital Displacement® hydraulics

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Start your journey on Digital Displacement® hydraulics by downloading a number of specialist papers presenting the vast depth of technology advancement.

This section provides you with first-rate, market-leading intelligence. An innovation with the simplicity of access and ease of operation at its very heart to make changes for a better future.

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Heavy off-road vehicles using conventional hydraulic systems waste significant energy through the throttling of fluid to control the motion of their actuators. This paper demonstrates how Digital Displacement ® Pump Motors (DDPMs) can be used to enable efficient hydraulic energy recovery systems for these vehicles by controlling the motion of actuators directly without the need of throttling... Read more

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Environmental and economic factors are driving the development of lower emission and more fuel efficient off off-highway vehicles. While a great deal of this development is focused on hybrid technology and novel system architectures, the simple application of a Digital Displacement ® Pump (DDP) in place of a conventional pump can deliver significant fuel fuel savings and productivity benefits, whilst also acting as an enabler for more radical future development.

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There is a long trend in off-highway vehicles toward higher energy efficiency and electro-hydraulic control. Digital pumps and motors are poised to become a significant enabling technology in this trend... Read more

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Reducing the energy consumption of off-highway machinery due to poor system efficiency is an urgent challenge. Several advanced and innovative architectures have been proposed over the years to tackle this problem, but very few of them found fertile ground for commercial applications due to increased complexity and cost... Read more

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The apparent volumetric displacement of digital displacement pumps and motors is reduced with increasing fluid pressure. So-called pump shrinkage has been documented in previous publications, where fluid compressibility effects were assumed to affect input and output power equally. In this paper, the authors derive the torque and flow rate of an ideal digital displacement pump.... Read More

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System architecture

Active damping using Digital Displacement® - improving control in off-highway and material handling machines. Download the case study

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Digital Displacement rail project

The final report of an RSSB-funded project examining the potential of Digital Displacement to reduce emissions and fuel consumption in non-passenger rail.

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A Digital Displacement® pump will become an Excavator machine’s connected, beating heart, unlocking a host of benefits. Learn more from our latest Excavator Case Study.

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Demonstration of a Digital Displacement® hydraulic hybrid bus

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