eBSS – Electro-hydraulic demand flow control

Energy-efficient, responsive, forward-looking

We help with the electrification of your working machine!

Development goals

The development of eBSS was carried out in cooperation with the Chair of Mobile Machinery.

The general idea behind the project was to optimise the working hydraulics of mobile machines, especially to increase of efficiency of a forestry crane hydraulic system. By minimising principle-related losses of a load-sensing control, the goal was to save energy by more than 10% by using an electro-hydraulic demand flow control (eBSS).

The following objectives were defined:

• Reduction in fuel consumption
• Minimisation of cooling power requirement
• Reduced oil temperature » lifetime of organic oilsImproved cold start behaviour
• Active influence on vibration susceptibility
• Increased ease of use and productivity
  
  

Our contribution to the environment: energy savings > 10-20 % compared to load sensing systems

Functionality

The electro-hydraulic demand flow control (eBSS) is an innovative system to control pumps and valves in an open circuit. The system is suitableThe electro-hydraulic demand flow control (eBSS) is an innovative system to control pumps and valves in an open circuit. The system is suitablefor stationary and mobile applications.
The pump is controlled electronically and adjusted to the volumetric flow rate requirements of the valves. This results in very direct control of theconsumers and the energy consumption of the load sensing systems can be reduced noticeably.By controlling the pump without feedback, vibrations can be avoided and the reaction time is noticeably shorter compared to LS systems. For the driver, this increases operating comfort and the machine can be controlled more precisely and better.

Hydraulic system of the test machine

LS system before retrofit

• 2 x A10VO71…DFR
• 2 x A10VO71…DFR
• 2 x 130 l/min
• 2 x M4-15 control block for crane
• 1 x M4-12 control block for additional functions
• No oil cooler

eBSS after retrofit

• 2 x A10VO85…EP2DF
• 2 x A10VO85…EP2DF
• 2 x 150 l/min
• 2 x LVS12 control block with digital pilot head for crane
• 1 x M4-12 control block for additional functions
• No oil cooler

eBSS – Ein Förderprojekt der Deutschen Bundesstiftung Umwelt (DBU)

Electronics

Products for the construction of electrical and electronic systems in machines

• Operating elements

• Cable harnesses

• Switch cabinets and distributors

• Signal adapters

• Controllers

Cable harness production according to your requirements

We assemble customised cable harnesses, including labelling and connectors, individually and at short notice – to suit your controllers.

Your benefits:

• Fast and simple assembly is guaranteed
• We offer delivery of samples or small and large quantities
• Short delivery periods possible
• Individual fabrication

Service & support

Reliable service on site or via remote maintenance.

System solutions

Thanks to our long experience in the field of forestry machinery, we are your competent partner for the development of robust and reliable electrical and hydraulic systems for mobile machines and vehicles.

 Our engineering services include consulting, planning and design, component selection, circuit diagram preparation and PLC programming.
During the construction phase we procure all individual parts and install them in your machine. Needless to say, we only use components designed for mobile use under extreme conditions. Our services include switch cabinet construction, cabling and assembly of hydraulic systems.

Even after completion of the machine, you are still in good hands with us. We take care of commissioning, maintenance and service for you. You receive detailed documentation, operating instructions and a spare parts list.