The new Scania V8 – prepared for the future

Buslovers Combining high performance with strict environmental standards was the focus of Scania’s development work for the new V8 engine.

Create the truck engine of the future: a V8 with the highest possible performance that meets Euro 5 requirements and is prepared for later environmental standards. This was the task facing Scania’s engine developers as they began work on the new V8. Five years later, the project has now achieved these objectives.

“Without compromising on fuel consumption, we have succeeded in building a very powerful engine,” says Björn Westman, head of engine development at Scania. Westman leads the V8 development teams.

Lighter and stronger
To achieve 3,500 Nm and 730 horsepower, Scania’s engineers built new features into the engine. The engine block is cast from compacted graphite iron − lighter and stronger than before − and the swept volume has increased from 15.6 to 16.4 litres.

The new engine is also Scania’s first V8 featuring variable turbo geometry and Scania XPI common rail extra-high-pressure fuel injection. Variable turbo geometry ensures uniform high torque at low revs. With the Scania XPI, fuel injection timing and injection pressure can be adjusted with great precision regardless of engine speed. These choices of technology enable the engine to meet the strict EEV standard (enhanced environmentally friendly vehicle), which is tougher than Euro 5, without a particulate filter.

Modular approach
The emission control system is based on selective catalytic reduction (SCR) technology.
“We regard SCR as a technology of the future for this type of engine operation, and we have developed a new advanced engine management system that includes the dosage of AdBlue additive,” says Robert Hedström, project coordinator at Scania’s engine development unit. “The system is also Euro 6-ready.”

Both Westman and Hedström emphasise the new V8’s continuity and affinity with the rest of Scania’s engine range, despite the innovations. All parts and components in the new engine belong to the Scania modular product system.

“By building on our modular philosophy, for example we can use the same cylinder diameter as in other newly developed Scania engines,” says Westman. “This gives our customers reliable access to parts and to tried-and-tested technology.”

Gentle power
The powertrain has been adapted to the new engine and is equipped with the new, fully automated Scania Opticruise gearchanging system. But no major changes were needed. A V8 engine is “gentle” to the powertrain, since it provides more uniform torque to the transmission and drive axle.

A Scania V8 is associated with power, good fuel economy and long service life – since a V8 does not have to work as hard. But, explains Westman, powerful engines will also be required to enable the transport industry to contribute to a more sustainable society.

“We expect more powerful engines to be needed to carry heavier and larger payloads,” he says. “A rig that can haul more cargo is better for society, and fewer large trucks are better than many small ones. This will mean lower overall fuel consumption and CO2 emissions.”

Engine Facts

R 500, R 560, R 620 R 730
Swept volume 15.6 litres 16.4 litres
Power and torque 500 hp 2500 Nm 730 hp 3500 Nm
560 hp 2700 Nm
620 hp 3000 Nm
Emissions Euro 5 Euro 5 and EEV
Emission control Scania SCR Scania SCR
Fuel Injection Scania PDE Scania XPI
Gearbox options 12+2-speed range-splitter 12+2-speed range-splitter
Manual gearchanging Scania Opticruise
Scania Opticruise Scania Retarder
Scania Retarder

More information about Scania’s new V8 range at:

We expect more powerful engines to be needed to carry heavier payloads.”
Björn Westman, head of engine development

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VOLVO 7900 Information System

Air and brake System
Separate circuits for front wheels, drive axle wheels, tag/pusher wheels. Park brake circuit acting on drive axle wheels. Volvo
disc brakes combined with electronic braking system EBS 5,which controls ABS/
ASR functions. Available features:brake blending, dual retarder control, drag torque control, hill start aid,brake temperature warning, poor brake performance warning, doo brake, brake assistant, automatic diff lock, lining wear sensing and analysis, automatic
calibration after brake pad change.
System operating pressure ……….10.8bar
Compressor capacity at 10 bar and engine
speed 33 r/s (2000 r/m)………….16,5 dm3/s (1000 l/m)
Compressor ratio …………………………1.35:1

Air tanks standard

– Primary………………………………2×30 dm3(l)
– Front circuit…………………………..30 dm3(l)
– Rear circuit……………………………30 dm3(l)
– Park circuit…………………………….30 dm3(l)
Compressed air system can easily be filled from external circuit.
Air operated spring brake acting directlyon the rear wheels. Application is infi nitely variable by means of a control on the fascia.
Vehicle Structure
The body is based on the patented Volvo Bus concept,where an aluminium alloy providing superior corrosion resistance is used. The structure is made of extruded aluminium profi le. Chassis floor structure built-up by steel RHS-profiles, welded together with open c-profile cross-members. The combined aluminium and steel frame combines good stability with low weight and gives long service life and increased loading capabilities. Rigidity provides good stability and driving.

Front and rear walls made from fi bre glass and ABS elements. External side panelling are made of a single sheet of aluminium under the window line combined with glass fibre plates and is fi nished of with a
aluminum lower skirt for the sides. Hatches are made of the same glass fibre panelling. Wheel arches of DCPD. Roof made of 1 mm thick single-piece aluminium sheet, glued to the roof frame. Mekra or Wilke external mirrors. Electrically or manually adjusted, heated or not. 3-piece bumpers. Top hinged service compartment hatches with snap or cylinder locks. Mounted outside wide angle mirror on the RHS, fl ag holder Available: school bus equipment, warning signalization when front hatch open, headlamp cleaner, exit light above door2, high rear direction indicator. 1 or 2 roof hatches, electrically or manually operated; with emergency exit mechanisms.
Doors and Door System
ISAF double doors inward gliding on all positions pneumatically powered with single bronze tinted glazing. Door operation available in a range of combinations. Control via button/joystick or both with various safety function combinations for door operation available. Can be fi tted with 8 mm square male or key cylinder locks for door1 locked from inside or outside.
Door confi gurations ………2+2+2; 2+2+0
Door buttons for driver right hand operated. External emergency valves at all doors. Mechanical or electrical access ramp at second door.

Materials fulfi l the European Directive 95/28, annex 4 and 5 concerning flam  mability. Step less, low fl oor throughout the interior, covered by antislip plastic Tarabus coverings. For the sidewall is usedlaminate and the fl oor is made of laminated plywood with noise damping properties in the engine area. Handrails in one standard colour : yellow RAL1021. Available light or heavy hammers with wire, which additionally can have signalization. On the front wheel box can be arranged a luggage rack. Partition walls are behind each door. Additional equipment: passenger barrier, fi re extinguisher 6 kg, fi rst-aid box, wheelchair safety wall, waste boxes for passengers, additional interior mirror.
Passenger and Courier Seat
Volvo seats. Modular, moulded construction. Cantilever mounted to the wall. Accessories: support handle, connections to support rail, bow-type handles, armrests, single and double seating places, seats for wheel arches and rear benches. Available foldable seats.
Space available to standing passengers:
7.7m2 for DL220, 8.8 m2 for DL222.

Drivers Seat and Station
Volvo dashboard available or instruments only supplied. Dashboard has two satellites on the right and the left side. Adjustable steering wheel, both height and tilt. Selfcanceling turn indicators.

Dashboard, mid module: speedometer,rev counter, Driver’s display, fuel gauge, coolant temperature, brakes, turbo and oil pressure, indicator and warning lamps Signalisation lamps.

Dashboard, right module: radio, 3 or 4-knob climate control unit. Dashboard, left module: emergency switch, tachograph, switches.

Right panel: gearbox selector, doorbrake knob, switches and signalisation lamps.

Left panel: Light Control Panel, exterior light switches, switches and signalisation lamps.

Roof panel: Digital tachograph, radio Instrumentation, behind engine. Selector for front or rear operation. These Controls enable engine operation from the tail of the vehicle during service work. ISRI driver’s seat, with optional 2 or 3-point safety belt.

Adjustment of: horizontal position, weight suppression, stroke, height and rake, seat cushion, backrest. The driver’s seat can have left side armrest, electrically heated seat/backrest, has air suspension with a swivel base. The driver’s compartment can have a low or high door with fi xed protection. Front 1-piece sunvisor can be manually or electrically operated. Side sun visor.

Main cut-off switch: electricity, engine or engine and fuel cut-off. Located on the dashboard left hand side.
Optional………………………..VDV Dashboard
Information System
ITS4mobility is an intelligent Transport S d i d f B i i System designed for Bus operations in public transport. It will assist the operator and driver with real time information about the traffi c and provide passenger inside the bus with information regarding next stop, following stop, route number, end destination and panic button for driver in case of emergency which will inform traffic control centre with position. A number of combinations combinations of hardware are available of hardware are available.

volvo 79001 122x300 VOLVO 7900 Information System

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