CHALLENGE:
ACHIEVE ZERO EMISSION
Encompassing both traction and hydraulic power, optimized for a battery voltage set at 48 Vdc.
Ensuring a compact and efficient solution, offering the versatility of two distinct power levels to meet a wide range of operational requirements.
SOLUTION:
NX8M LOW-VOLTAGE MOTOR
Parker’s NX86HM for traction and NX82HM SAE A is the preferred choice for powering electrohydraulic pumps.
The system is completed by two associated GVI inverters, ensuring optimal power conversion and control.
BENEFITS:
REDUCED EMISSIONS AND NOISE POLLUTION
The solution offers unparalleled flexibility by utilizing the same type of motor and inverter for both functions.
In addition this solution is a combination of high power density, cost efficiency and quieter operation.
With more than 40 years of experience, Saraka Oy from Ulvila in Finland is the Nordics’ leading manufacturer of concrete mixers and pumps and telescopic drop chutes. Saraka’s products represent the cutting edge of the industry, due to its focus, from the very beginning, on developing the working methods of concrete professionals and providing the best equipment for them. Its collaboration with Parker has spanned decades.
“While there remains an economic gap between an electric application and one driven by an endothermic engine, the road to decarbonisation has been mapped out, and there will be an increasing demand for zero-emission machinery. Pitteri Violini, will be at the side of small-to-medium domestic manufacturers, supporting them in the transition to increasingly sustainable applications thanks to Parker and its broad product portfolio.”
Pitteri Violini
Pioneering an electric hybrid drive solution
As a pioneer in its sector, Saraka is also on the leading edge of innovations. For example, its electric hybrid drive superstructure for concrete is powered by a lithium battery system-based hybrid drive. This enables the vehicle’s on-board combustion engine to be shut down when it reaches the site and the work is carried out on a quiet electric drive. “Twenty trucks are now in use and our design specifications proved to be accurate and they perform as promised. The battery lasts the whole workday without charging and feedback from the worksites has been extremely positive”, says Karilainen.
Close co-operation creates the best solutions for customers
The brand-new product contains Parker’s electric motor and IQAN control systems.
“We weighed a few different options, but Parker was clearly the best match for our needs. They were already closely involved at the design phase, taking responsibility for calculating the size of the electric motor based on our specs and determining what components were needed.
The ideal operating temperature of the new component, i.e. batteries, is set at an entirely different level compared with traditional diesel engines or hydraulic systems. The ideal temperature for a battery in its current form and chemical composition is similar to that on a hot summer’s day in Finland.
As a result, the waste heat from the battery does not dissipate to the surroundings without a technical solution. The dimensioning of cooling and optimisation of efficiency become an important area in the engineering of hybrid and full electric machines. Also the optimisation of hydraulics becomes a necessity when combustion engines are retired as a source of power, replaced by batteries, inverters and an electric motor. The design principles for these solutions are quite different.
When we imagine a full electric machine of the future or the hybrids during the current transition period, system suppliers play a major role in alleviating the challenges and resources of OEMs. Parker maintains constant R&D efforts to meet these new customer challenges and develop new solutions for electric motor, inverter and cooling needs.
As a result of the project, the IQAN software was updated. They defined the required components and we provided the necessary technical solutions. Once again, successful collaboration and the merging of our areas of expertise culminated in the best possible end result”, says a pleased Karilainen.
Expertise in design and implementation of electrified equipment
Electrification brings its own challenges for manufacturers of mobile machinery. New technology, such as inverters, electric motors, batteries and battery management systems require new kinds of in-house expertise.
In the future, OEMs may need to have the required electrical installation permits in order to carry out independent installation work.
Electrical safety challenges are therefore one clear shift facing manufacturers of mobile machinery.
Another challenge is temperature control in machines.
Discover more about the products used on the Hybrid Power Application
Global Vehicle Inverter For Battery System - GVI
Pmac Mobile Motors For Mobile - GVM
Master Controllers - Iqan® MC4X
Axial Piston Variable Displacement Pumps - Series VP1
Want to find out more?
Learn more about Parker's Electrification solutions
“The first twenty trucks are in use and our design specifications proved to be accurate and they perform as promised. The battery lasts the whole workday without charging and feedback from the worksites has been extremely positive.”
Tomi Karilainen, Saraka Oy