Numerous new features, including Scania Active Prediction, have been integrated free-of-charge with Scania Opticruise into a predictive powertrain control system that provides fuel savings of 4-5 percent. Specialised perform-ance modes have been developed to boost efficiency in different applications. A basic version of Scania Opticruise is an additional option for maximum fuel economy. With limited functionality, it further simplifies economical driving.
The new Economy mode is tuned for maximum fuel saving in long-haulage. Scania Opticruise, Scania Active Prediction and the new Economy mode provide combined fuel savings of up to 4-5 percent. Further significant savings are obtained from the aerodynamic refinements introduced with Scania Streamline, low-drag gearboxes and the second generation 450 and 490 hp Euro 6 engines.
Scania Active Prediction is a predictive cruise control system that uses GPS and topographical map data to finely regulate the cruising speed. It is fully integrated in the new functionality, using different fuel-saving strategies in different performance modes. The new version of Scania Ecocruise is fitted in markets where no topo-graphical map data is available.
The new performance modes enable customers to tailor the vehicle’s performance to suit each type of operation, as well as to individual preferences regarding functio-nality and driver influence. All settings can be altered or fine-tuned by a Scania workshop.
The new features are integrated in existing controls – i.e. the steering wheel buttons for Scania Active Prediction and the steering wheel lever for Scania Opticruise. Switching between modes is done by toggling the ring switch and the modes available are shown in the central display.
Customised performance – up to three modes on each truck
Up to three performance modes can be specified on vehicles with Scania Opticruise. Several other parameters can be set individually according to customer needs and all settings can be altered by a Scania workshop if required.
- Standard mode is an all-round mode optimised to provide good fuel economy, while still delivering good hill performance. The system strives to run the engine at maximum torque during hillclimbing. Scania Active Prediction is fully integrated in the functionality, increasing speed slightly to gain momentum before entering an uphill section. Before entering a descent, the vehicle starts coasting to save fuel, and gains downhill speed using the momentum of the vehicle. The system works within a speed window of 6 percent below and 4 percent above the set cruising speed (–6%, +4%).
- Economy mode is tuned to consume as little fuel as possible with some sacrifice in terms of trip time. Engine response is soft (with Euro 6 engines). Alternative speed limiter settings of 85 or 80 km/h can be chosen, which engage automatically when switching to Economy mode. Kickdown is disabled. Scania Active Prediction uses a special economy strategy. The speed window spans from 12 percent below up to the set cruising speed (–12%, 0%). The minimum adjustable offset for downhill speed control with a retarder is 5 km/h above cruising speed in Economy mode (3 km/h in other modes).
- Power mode is intended for runs where transport time is at a premium. Engine response is aggressive (Euro 5 with XPI, Euro 6 engines) and uphill performance is optimised by running the engine at maximum power, with slightly quicker gearchanges than in Standard mode. Scania Active Prediction is not available and the cruise control has normal functionality.
- Off-road mode is suitable for driving in rough terrain and on surfaces with high rolling resistance. Vehicles specified for off-road driving have Off-road mode and it can be specified for other applications as well, for example forestry. Engine response is soft (Euro 5 with XPI, Euro 6 engines) to promote smooth progress.
The system strives to keep the clutch engaged as much as possible to avoid interruptions in power delivery and traction. The number of gearchanges is minimised by allowing the engine to work over a wider rev band. Gearchanges are faster with a priority on gearchanging speed over comfort. Scania Active Prediction is not operating, normal cruise control functionality applies.
Basic version of Scania Opticruise with limited functionality
Scania has also developed a simplified gearchanging system that limits the possibilities for the driver to influence gearchanging. This shortcut to even better fuel economy is requested in particular by large fleet owners, whose drivers frequently drive different brands.
Scania Opticruise Basic for long-haulage:
- Fully automated Scania Opticruise (with automatic clutch).
- Standard and Economy mode.
- Scania Active Prediction (or Scania Ecocruise).
- Speed limiter set at 85 km/h or 80 km/h.
- Kickdown disabled.
- Manual gearchanging disabled (above 50 km/h).