Powerful and compact trends

Published 10/10, 2018 at 15:29

Since the Intermat show earlier this year, the market has seen the launch of a large number of new wheel loader models. This special feature looks at some of them, with a particular emphasis on the new ‘futuristic’ Volvo compact wheel loaders.

Doosan launches New DL280-5 wheel loader

Doosan has launched the new DL280-5 wheel loader, designed for waste and recycling and general industrial applications, and is the latest development in the high performance Doosan wheel loader range, which comprises of 13 models ranging from 12t to 36t. The DL280-5 offers high performance and productivity as well as breakout force, tipping load and enhanced output.  The front lift arm is powered by a closed centre hydraulic system with a 210 l/min axial piston pump.  This system facilitates hydraulic performance, without producing excess capacity, thus saving on fuel, as well as extending the lifetime and reliability of vital components.

The DL280-5 features Z-bar kinematics with a simple lifting piston system designed for heavy duty applications.  The breakout force of 145kN is combined with a constant bucket angle that is maintained throughout the range of movement.  Bucket angles are also optimised in the travelling position, and at ground level. The lift arm benefits from an automatic load isolation system’ (LIS) – often called ride control – a standard feature which significantly improves the wheel loader’s ride quality, and operator comfort, by ensuring a smooth ride over rough terrain, thereby reducing cycle times owing to improved vehicle stability when moving.  This also provides higher productivity and better fuel efficiency when performing load and carry applications, with the speed for automatic activation of the LIS system being fully adjustable.

The DL280-5 is powered by the proven 5.9 l Doosan DL06 diesel engine which provides high torque, performance and durability in this, and other models, in the Doosan range.  It features a cooled exhaust gas recirculation (EGR), enhanced turbo charger technology and selective catalytic reduction technology (SCR) without having to use a diesel particulate filter (DPF). This feature is of particular interest to the waste and recycling industries, with the DL06 engine being compliant with Stage IV/Tier 4 Final emission regulations.

Engine power is managed via three different working modes: ‘Eco’, ‘Normal’ and ‘Power’, to ensure the best torque and power to handle even the toughest work conditions, with the best fuel efficiency. As standard, an auto shut down reduces the idle time of the engine, to prevent the over consumption of fuel and wasted operating time.  Operators can easily set the timing for this function via the LCD display in the cab. The operator environment is state of the art, with a modern and attractive work space offering generous headroom, with full seat movement providing plenty of leg room.  A comfortable ‘Grammer’ comes as standard with vertical and horizontal suspension, heating and full adjustability.

Inside the cab, there is a new ergonomic joystick control with a progressive thumb wheel added for the auxiliary hydraulic line (3rd valve), often used to power high tip buckets and grapples commonly used in the waste and recycling industries.  The progressive thumb wheel ensures that no additional lever is needed, providing the easiest combination of movements to manage the 3rd valve operations.  FNR control has been relocated on the back of the joystick, via a three position rocker switch, which is more convenient and intuitive to use.  



Komatsu Europe launches two new compact wheel loaders

The new Komatsu WA100M-8 compact wheel loader is designed to enhance low cost operations with a powerful EU Stage IV engine, the proven Komatsu selective catalytic reduction (SCR) system, a new ergonomic design, a high level of standard specifications and an array of new options. This makes the loader ideal for construction sites, the recycling industry or for agricultural jobs. It comes with a hydraulic quick coupler, easy fork kinematic and a wide range of available attachments, making it a reliable and versatile tool. “The WA100M-8 is built on the strong base of the WA100M-7,” says Sebastian Zienau, product manager at Komatsu Europe. “With its many new features and options, it opens up a whole new range of versatility. We’re really looking forward to offering such a flexible machine to our customers.”

Komatsu Europe has also launched the ‘all-rounder’, WA200-8 wheel loader, a utility performer for most worksites, with an attachment friendly quick coupler, an EU Stage IV engine, delivering up to 4% lower fuel consumption. Encompassing the recognised benefits of its predecessor, the Komatsu WA200-8 offers customers a combination of stability, breakout power and tractive effort. Engine acceleration has been increased with boom raising time improved for higher productivity and fuel savings.

A fourth generation hydrostatic transmission’ (HST) helps prolong brake life, while ‘S-Mode’ gives the operator maximum control in slippery conditions. “A focus for the development of the WA200-8 was to make it reliable on any type of surface and efficient in all applications,” says Dadgar Shayan, product manager for wheel loaders. “And with its new high lift boom it can also load dump trucks with a side wall of over 4m, with outstanding stability for its class.”

The operating weight of the WA200-8 ranges from 11,715kg to 12,015 kg, with its ‘powerful and clean’ Komatsu SAA4D107E-3 engine providing output of 94kW. Komatsu’s diesel oxidation catalyst (KDOC), and other after treatment components, work together with the engine for improved efficiency and longer life. A new integrated elective catalytic reduction (SCR) system further reduces NOx emissions by 80% using AdBlue®. The engine’s advanced electronic control system manages the air flow rate, fuel injection, combustion parameters and after treatment functions along with optimised low emission performance; advanced diagnostic capabilities are also provided.

An ‘auto idle shutdown’ system prevents unnecessary fuel consumption, as it automatically shuts the engine off, and applies the parking brake and hydraulic lock after a pre-set idle time limit. The redesigned digging bucket further improves penetration and is easier to fill, with a longer bucket bottom, a modified shape of the back and side walls, and a new design of the spill guard. The engine is designed to operate at high efficiency thanks to precise engine control, reduction of the exhaust gas recirculation (EGR) rate and an upgraded variable geometry turbocharger (VGT). A new engine controller and advanced injection timing help to increase productivity and also reduce fuel consumption, whatever the job.



Volvo CE unveils electric compact wheel loader concept

Volvo Construction Equipment (Volvo CE) recently unveiled its latest concept machine, known as the LX2, to industry specialists, policymakers, media and academics at its innovation summit. The electric compact wheel loader prototype delivers zero emissions, significantly lower noise levels, improved efficiency and reduced operational costs, when compared to its conventional counterparts.

Volvo Group’s 4th innovation summit was held in Berlin, Germany, alongside autonomous and electro-mobility innovations from across the Volvo Group. The event focused on infrastructure and transport in cities of the future, as well as how new concepts can have a positive impact on society through increased transport efficiency, reduced environmental impact and improved traffic safety. At the summit, Volvo CE also demonstrated its EX2 fully electric compact excavator prototype, and presented the company’s electric site research project.

The LX2 itself is a second generation prototype that is part of a research project, and is not commercially available. To make the machine electric, the combustion engine has been replaced with a lithium ion battery. This stores enough electric energy to operate the machine for eight hours in its most common applications, such as light infrastructure construction and landscaping. The LX2 also incorporates two dedicated electric motors, one for the drivetrain, and one for the hydraulics. Decoupling the subsystems has led to higher efficiency in both the systems and the entire machine.

“The LX2 is a revolutionary zero emissions prototype that offers improved efficiency, and lower operational costs, without compromising on machine performance,” says Ulrich Faß, emerging technologies manager. “It incorporates the latest advanced chemistry battery technology. As it’s electric, no particulate matter, nitrogen oxide or carbon dioxide are released into the environment. This, together with the fact that it has extremely low noise levels, makes it ideal for use in cities and densely populated areas, as it can be used without disturbing people. This is the same for the EX2 100% electric compact excavator, therefore the machines would be ideally suited to working alongside each other.”

Like the LX2, the EX2 is also part of a research project and is not commercially available. The prototype machine delivers zero emissions, 10 times higher efficiency, 10 times lower noise levels and reduced total cost of ownership when compared to its conventional counterparts. Volvo CE also presented its electric site research project which aims to transform the quarry and aggregates industry by reducing carbon emissions by up to 95% and total cost of ownership by up to 25%. 

Volvo CE together with its customer Skanska Sweden, are currently testing the electric site solution in a real production environment for 10 weeks at Skanska’s Vikan Kross quarry, near Gothenburg, Sweden. The system incorporates prototype electric and autonomous machines including the HX2 autonomous battery electric load carrier, the LX1 hybrid wheel loader and the EX1 cable connected excavator. These machines are part of a research project and are not commercially available.

“The electrification of construction equipment will produce cleaner, quieter and more efficient machines – this represents the future of our industry,” concludes Patrik Lundblad, senior vice president of technology at Volvo CE. “We are currently in a period of exponential technology growth, and are at the start of a paradigm shift. At Volvo CE we are developing technologies connected to electro-mobility, automation and connectivity that will benefit our customers and the environment by contributing to increased machine performance, productivity, efficiency, safety and sustainability. Our future products and services will play an important part in building a sustainable society.”


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