An innovative cruise control system dubbed "Predictive Cruise Control (PCC)" is showcased in the Freightliner New Innovation Truck study
Auto industry world premiere at Mid-America Trucking Show
PCC system guarantees fuel-efficient operations
Stuttgart, Louisville/ Kentucky – Daimler Trucks North America showcased the innovative "Predictive Cruise Control (PCC)" system in the "Freightliner New Innovation Truck" study at the Mid-America Trucking Show (MATS). This assistance system using map and satellite-based route previews is a world premiere for the automotive industry, and was developed jointly by engineers from Daimler Research in Stuttgart and Portland. The PCC system saves substantial amounts of fuel.
PCC helps save fuel
Unlike a conventional cruise control system that tries to maintain a preset speed, regardless of how the terrain changes, the PCC system looks for its route a mile in advance and adjusts engine output to the uphill and downhill gradients ahead. Based on this information, the on-board computer calculates – using the same algorithms the driver will have learned during a driver training course – the optimum speed in terms of fuel economy. The insights gained from driver training are actually integrated insofar as the system on the PCC-managed truck mimics the theory of "letting it roll over the brow of a hill" and "utilising peak momentum driving downhill". The fuel saving is achieved by adapting the preset cruise control speed without reducing the average speed. Because what the truck loses in terms of speed going uphill, is offset by the momentum going downhill. All of which saves a substantial amount of fuel. It will be available as an option from July 2009, marketed as RunSmart Predictive Cruise, in Freightliner Cascadia trucks with a 72-inch raised roof and DD15 engine.
The maps were commissioned by Daimler Trucks North America from the market leader for digital maps, NAVTEQ. NAVTEQ provides 3-D maps covering more than 200,000 miles (approx. 350,000 km) of the roads most widely used by trucks in the 48 states in continental USA.