Major assemblies: revolutionary engines, light trailer axles
Services: looking at the future of telematics
Stuttgart – Daimler commercial vehicle brands will be presenting a great number of premieres at the International Motor Show for Commercial Vehicles (IAA) in Hanover in September this year. Whether trucks, buses or vans: the main focus for all brands and models will be on more environmentally-friendly, economically-efficient and safer vehicles and major assemblies. Whether trucks from Mercedes-Benz and Fuso, buses from Mercedes-Benz and Setra, vans from Mercedes-Benz or major assemblies and services – they all represent Daimler's innovative leadership.
More economic despite Euro VI: developers come up with brilliant ideas
The joint aim uniting all brands and product ranges is to produce both extremely efficient and at the same time very eco-friendly transport vehicles: Daimler supplies the cleanest and most economical trucks and buses with Euro VI emissions standards as well as extremely economically-efficient and eco-friendly vans. For instance, the new trucks and buses have lower fuel consumption than their predecessors despite the Euro VI emissions standards – a brilliant engineering achievement. And last but not least, numerous new features are increasing our lead in the field of safety and assistance systems.
Thus Daimler commercial vehicle brands are once more emphasising their leading role in environmental technology (Clean Drive) and safety (Safe Drive) as part of the new strategy for "Shaping future transportation".
Mercedes-Benz Trucks: world premiere for the Antos
The Mercedes-Benz Antos is celebrating its world premiere at the IAA for commercial vehicles. With its new engines in accordance with Euro VI emissions standards as well as other tailor-made solutions, it is the first truck to be specially designed as a vehicle for heavy-duty short-radius distribution and is perfectly equipped for a wide variety of uses. The new volumer and loader versions achieve record figures for payload and loading height. At the same time, the Antos is a premium truck setting new standards in safety and comfort for deliveries and distribution.
Actros: new versions, unique technical features
The new Mercedes-Benz Actros continues to be the most economically-efficient truck for long-distance hauls. It is increasing its lead with the third generation of the unique Active Brake Assist. The new Predictive Powertrain Control (PPC) links GPS information about routes with the transmission system, making it a perfect assistant for foresighted and fuel-efficient driving. The Actros is also appearing with additional versions as volumer and loader. New engines are expanding its operative spectrum. A show truck will be showing the great variety of ways in which the new Actros can be customised.
Unimog: the implement carrier of tomorrow
Mercedes-Benz Special Trucks is allowing a first view of the future of the Unimog with an exciting technological packhorse – one more world premiere for the IAA for commercial vehicles. The headline for the Unimog of tomorrow simply reads Euro VI, under which a completely new generation of implement carriers U300 to U 500 with fascinating technical features will become visible.
Fuso: the new Canter Eco Hybrid really pays
On the basis of the new light Canter truck, the Japanese Daimler subsidiary Fuso has once more quite clearly refined the hybrid drive. The new Canter Eco Hybrid will also be produced in Europe from the third quarter of 2012 on and will be the first truck in its class with hybrid drive. Fuso has managed to make sure that the hybrid drive pays off after only a few years – a great stride forward for alternative drive systems.
Mercedes-Benz Vans: world premiere for the nippy Citan
Mercedes-Benz Vans has expanded into a full-line supplier with the new city van Citan. The Citan is a further world premiere at the IAA for commercial vehicles. Behind the attractive look typical of the brand there are the corresponding technical features: whether it is the drive, chassis, interior or the great variety of different versions and equipment, the new Mercedes-Benz Citan provides an attractive and economically-efficient answer to the questions raised by city logistics.
Sprinter: even more comfortable, dynamic and efficient
The Mercedes-Benz Sprinter will be coming to the IAA with a new seven-speed automatic transmission which is unique in the van class – it combines comfort with economic efficiency and dynamics. BlueEfficiency technology is setting new standards in economic efficiency and cleanliness. With the additional functions of the ESP safety system, it is noticeably increasing its lead in this sector.
Vito E-CELL crewbus: E-drive for passenger transport
The Vito E-CELL crewbus is the first seven-seater with a purely electric drive and it is the next stage in the evolution of the successful Vito E-CELL. It will go into series production, will be offered in 16 countries throughout Europe, has no exhaust emissions and is therefore extremely suitable for carrying people especially in areas that are particularly emissions-sensitive.
Daimler Buses: world premiere of the Setra ComfortClass 500
The next world premiere is contributed by Daimler Buses with its Setra brand: the new Setra ComfortClass 500 will make its debut at the IAA for commercial vehicles. The product range is raising the business segment for coaches to a new level: aerodynamically perfected in every detail and with an emotive design full of new ideas for both the passenger area and the driver's cockpit, as well as an abundance of safety systems and a new economical drive with Euro VI emissions standards, the new ComfortClass 500 underlines the well-known Setra motto: "Best in Class".
Citaro: series production bus conforming to Euro VI emissions standard
The Mercedes-Benz Citaro, a world best-seller among regular-service buses, shines with a new drive system which upholds the Euro VI standards as well as attractive features which offer a comfortable ride. A great number of improvements have helped counteract the increased weight and lower the fuel consumption to a previously unreached level.
Major assemblies: revolutionary engines, light trailer axles
One of the prerequisites for producing environmentally friendly and efficient vehicles is the same across all brands and models: a perfect power train. An outstanding example: the generation of BlueEfficiency Power engines. In the space of one year, Mercedes-Benz has completely renewed its engines for the heavy-duty and medium-duty sectors. This was started with the OM 471 and further included the OM 470 and OM 934/936 model series. Their technical finesse includes the revolutionary injection system X-PULSE (OM 470/471) and the first adjustable camshaft in a diesel engine (OM 934/936). All the engines are already available as Euro VI versions.
However, Daimler is not only interested in improving the efficiency of motorised vehicles alone. Mercedes-Benz TrailerAxleSystems, the specialists for the axles of towed vehicles, are also the technical pioneers in this branch. TrailerAxleSystems will be proving this once again at the IAA with its weight-optimised axles for towed units.
Services: looking at the future of telematics
At the heart of the wide range of service offers are the services of the FleetBoard telematics system. Parallel to the introduction of the new Mercedes-Benz Antos, FleetBoard is presenting customised solutions for short-radius distribution applications. Trailer-management and extended operational analysis for bus and coach fleets assist companies in increasing their efficiency.
FleetBoard also allows a glance into the future with the innovative study of an open telematics platform and the prototype of an informative App for drivers. Based on FleetBoard, the Truck maintenance management and Telediagnosis functions allow expensive downtime to be minimised, thus also making this a tool for improving efficiency.
Economic, clean, highly efficient: a perfectly tuned drivetrain in trucks, vans and buses
Complete engine range conforms to Euro VI emissions standard
Exhaust system for Euro VI: a complex technology lab
Gearbox: PowerShift for short-radius distribution and long-distance haulage
Axles: driving dynamics and comfort combine with efficiency
Carefully tuned components for a high-efficiency drivetrain – one of the unmatched strengths of all Daimler Group trucks, vans and buses. The result is the highest degree of economy through low fuel consumption, longevity and extraordinarily long maintenance intervals. And the environmental compatibility is just as outstanding: as the world's first manufacturer to offer an entire engine range conforming to the Euro VI emissions standard in the heavy-duty and medium-duty field, Mercedes-Benz once again takes on a pioneering role.
Engines compliant with Euro VI emissions standard
The headline reads BlueEfficiency Power: as the first manufacturer to do so, Mercedes-Benz is offering turbo diesel engines conforming to the coming Euro VI emissions standard across all common output ranges. The engines are all completely new designs. They impress through the highest degree of economy, environmental compatibility, powerful thrust, smooth running and innovative technology. The new BlueEfficiency Power generation sets the standard and emphasises Mercedes-Benz competence in the field of diesel engines.
Mercedes-Benz covers the heavy-duty and medium-duty segments for trucks and buses with two entirely new engine ranges. The inline engines with four and six cylinders range from a capacity of 5.1 litres to 12.8 litres and a power from 115 kW (156 hp) to 375 kW (510 hp). They all share state-of-the-art technology, featuring four valves per cylinder, a cross-flow cylinder head, double overhead camshafts, common-rail injection, high combustion and injection pressures, exhaust gas recirculation, SCR technology with AdBlue injection and particle filters. And add numerous technical tricks to the mix.
The result is also common to them all: low fuel consumption, maximum endurance under continuous operation, the highest reliability, long maintenance intervals, easy maintenance, outstandingly smooth performance, impressive thrust and a fantastic driving experience. Another impressive feature is their longevity: 90 percent of the engines achieve a mileage of 1.2 million kilometres (OM 47x model series) or 750,000 kilometres (OM 93x) before requiring an overhaul.
The new BlueEfficiency Power engine generation by Mercedes-Benz thus combines the highest standards of economy, environmental compatibility and performance.
The OM 471: ideal for heavy-duty work
The first to be released one year ago was the Mercedes-Benz engine OM 471. Its 12.8-litre capacity and output variants from 310 kW (421 hp) to 375 kW (510 hp) allow it to meet the requirements of heavy trucks in long-distance haulage and short-radius distribution as well as those of three-axle long-distance touring coaches. Its outstanding characteristics include resilience and longevity. The design is based around a rigid crankcase and single-part steel pistons. The high-strength cylinder head is made of compacted graphite iron (CGI).
The key features of the OM 471 include the new X-PULSE injection system with pressure boosters in the individual injectors. This unique technology facilitates free forming of the fuel injection resulting in quiet running and smooth engine performance, significantly low fuel consumption and minimised exhaust gas emissions.
An asymmetrical exhaust gas turbocharger with fixed turbine geometry results in a spontaneous response to accelerator pedal movements while the turbocharged three-stage decompression engine brake provides astounding performance.
The four output and torque levels of the OM 471:
310 kW (421 hp) at 1,800 rpm
2,100 Nm at 1,100 rpm
330 kW (449 hp) at 1,800 rpm
2,200 Nm at 1,100 rpm
350 kW (476 hp) at 1,800 rpm
2,300 Nm at 1,100 rpm
375 kW (510 hp) at 1,800 rpm
2,500 Nm at 1,100 rpm
The OM 470: a lightweight, powerful and robust jack-of-all-trades
The heavy-duty engines also include the new Mercedes-Benz OM 470 with a capacity of 10.7 litres. Presented in spring, this engine will now be employed in the new Mercedes-Benz Antos, in the Actros and in Mercedes-Benz and Setra buses. The engine is based on the OM 471 but offers its own character. For instance, the OM 470's weight of only 990 kg makes it ideally suited for weight-sensitive trucks and buses in accordance with DIN 70020-A.
With an eye to typical deployment scenarios and gearboxes with a broad ratio spread, the new OM 470 has been tuned even more consistently to drivability: the engine achieves a full 95 percent of its maximum torque at only 800 rpm. In terms of resilience, the new OM 470 is just as impressive as its older brother. However, the quiet and efficient gears driving the two camshafts as well as any auxiliary units are a completely new, weight-optimised design.
The OM 470 also employs the innovative X-PULSE injection system with pressure boosters. The injectors' nozzles have been tailored to the technology of the drivetrain. Both the asymmetrical turbocharger and the high-performance engine brake correspond in their effect to those of the larger engine. The engine also shares the same maintenance interval of 150,000 km for long-distance haulage, as does the particle filter at 450,000 km.
The new four- and six-cylinder engines of the medium-duty series also set standards. With a capacity of 5.1 and 7.7 litres and nine finely graduated outputs from 115 kW (156 hp) to 260 kW (354 hp), they cover a broad spectrum for short-radius distribution and long-distance haulage trucks as well as public-transport buses. For buses in particular, horizontal versions are also manufactured (OM 936h).
The low consumption values for fuel, engine oil and AdBlue are among the medium-duty series' outstanding characteristics. The excellent economy is further enhanced by high mileages and long service intervals. Specific output of up to 34 kW (46 hp) per litre of engine capacity propels the power units to a performance class previously only achieved by larger-capacity engines. It is this downsizing that provides one of the prerequisites for the favourable exhaust emissions and consumption values and the excellent power-to-weight ratios.
Besides the new engines' nominal data, it is their ease-of-driving that impresses. At an engine speed of only 1,600 rpm, roughly 90 percent of the maximum torque is already available. At the same time, the engines also display dynamic thrust at low revs: a high power output is available at speeds below 1,000 rpm. Like many of their other properties, this power generation is also reminiscent of engines with a far greater capacity.
At a maximum output of 170 kW (four-cylinder engine) or 300 kW (six-cylinder engine) respectively, the multi-stage decompression engine brake also displays high performance.
Bore, stroke and cylinder spacing of the four and six-cylinder engines is identical throughout. The cylinder head and crankcase are made of grey cast iron with lamellar graphite. The technical tricks include VCP (Variable Camshaft Phaser). The term refers to an adjustable exhaust camshaft, the first ever of its kind in a diesel engine. The lightweight aluminium pistons are robust, as is the gear drive. Maximum injection pressure lies at an impressive 2,400 bar.
Turbocharging is perfectly tailored to the output variant and type. Single and two-stage charging as well as an asymmetrical exhaust gas turbocharger are used. At 495 kg (four-cylinder engine) and 650 kg (six-cylinder engine, each compliant with DIN 70020-A), the power-to-weight ratio is good despite the high resilience.
The following variants of the four-cylinder Mercedes-Benz OM 934 are available:
115 kW (156 hp) at 2,200 rpm
650 at 1,200 - 1,600 rpm
130 kW (177 hp) at 2,200 rpm
750 at 1,200 - 1,600 rpm
155 kW (211 hp) at 2,200 rpm
850 at 1,200 - 1,600 rpm
170 kW (231 hp) at 2,200 rpm
950 at 1,200 - 1,600 rpm
The Mercedes-Benz OM 936 is available in five output and torque levels:
175 kW (238 hp) at 2,200 rpm
1,000 at 1,200 - 1,600 rpm
200 kW (272 hp) at 2,200 rpm
1,100 at 1,200 - 1,600 rpm
220 kW (299 hp) at 2,200 rpm
1,200 at 1,200 - 1,600 rpm
235 kW (320 hp) at 2,200 rpm
1,300 at 1,200 - 1,600 rpm
260 kW (354 hp) at 2,200 rpm
1,400 at 1,200 - 1,600 rpm
Exhaust system for Euro VI: a complex technology lab
Mercedes-Benz acting as a pioneer in terms of environmentally friendly commercial vehicles has a long tradition – at the International Motor Show for Commercial Vehicles (IAA) in 2004, the brand with the star presented for the first time BlueTec technology with SCR and AdBlue injection as well as the oxidation catalytic converter. Today, this technology is widely used by manufacturers of commercial vehicle engines throughout Europe, North America and Asia.
With the introduction of the Euro VI emissions standard, an additional particle filter, as is already widely used by urban buses such as the Mercedes-Benz Citaro or by vans such as the Sprinter and the Vito, becomes indispensable. For the new heavy and medium-duty engines, Mercedes-Benz uses a compact one-box system for the entire exhaust system. Depending on the engine, the system features one or two branches. Low-optimised exhaust routing minimises the counterpressure responsible for increasing fuel consumption.
With its oxidation catalytic converter, diesel particle filter and SCR catalytic converter, the complex structure is reminiscent of a mobile technology lab. Thanks to regular automatic regeneration via the separate HC dosing unit in the exhaust system, the particle filter requires only the absolute minimum maintenance. The interval ranges from 120,000 km or every two years for the urban bus up to 450,000 km for long-distance haulage.