images

Volvo Technology Award given to an electro-hydraulic system

Volvo’s Construction Equipment’s Common Pressure Rail Hybrid system is breaking new grounds for hydraulic efficiency in excavators by improving performance while reducing CO2 emissions in line with Volvo Group’s net zero value ambitions by 2040. This electro-hydraulic solution is set to push fuel efficiency to new levels.

This system came about from an academic collaboration that manifested into a real-world solution through the collaborative workings of the Volvo teams from Sweden and South Korea, who worked closely with Finnish company Norrhydro. It is believed that this system is currently involved in ongoing customer trials in the field and is expected to accelerate the introduction of e-mobility across Volvo CE’s larger excavator platform and soon to be available in the excavator market in the near future.

In the new system architecture, the machine’s work functions are connected to a hydraulic energy storage via a common pressure rail, comprised by two or more pressure lines. The energy storage consists of hydraulic actuators and enables energy-efficient recovery of kinetic energy and peak power supply. For cylinder-driven functions, the smart actuators are used to achieve energy-efficient conversion from hydraulic power to a variable force and speed.

The system also allows energy recovery and performance increase of the machine’s rotating loads, such as the swing function through the introduction of variable hydraulic machines.

Due to the reduced energy losses and the power contribution from hydraulic accumulators, a smaller power source can be used and the need for cooling is reduced. With a higher available power, cycle times can be shortened such as when loading a truck and contributes to both efficiency increases and cost benefits for the customer.

The Volvo Technology Award is awarded to outstanding technical advances that contribute to the enhancement of the Volvo Group’s high-tech competitiveness and technology expertise.

Although this technology is not available in South Africa at the moment, Power Team SA knows the importance of growing hydraulic components and systems within various vehicles and equipment. By doing so power and energy can be increased without making any compromises. Power Team SA, through years of experience within the industry, understand the positive impact that hydraulics can make in various industries.