Created for high output petrol engines, Nüral EcoTough® pistons provide a major reduction in wear on the piston surfaces in contact with the cylinder, due to their higher scuffing resistance. Extensive tests confirm a reduction of piston friction in the range of 10 to 18%. Fuel economy benefit of up to 0.8% in normal driving conditions, compared to conventional piston coatings.
The drive to decrease CO2 emissions and fuel consumption makes the reduction of parasitic friction losses between the piston and the cylinder bore a priority for vehicle manufacturers. At the same time, the power output per litre of engine displacement is increasing as engines are downsized and boosted, subjecting pistons to higher mechanical and thermal loads.