26 Mar How the leading manufacturers are making Diesel even better….
Leading manufacturers are introducing these great new innovations to making Diesel vehicles more efficient.
- The rediscovery of Steel: For decades, the pistons in the engine are usually made of aluminium. Mercedes but now wants to – use steel pistons – as in the early days of the diesel engine. This is to save fuel up to three percent. Although steel is heavier than aluminium, but it is a poorer conductor of heat – which is desirable in this case. Because then the temperature rise in the combustion chamber, and the efficiency is improved. The new pistons are soon to be used in four and six-cylinder diesel engines from Mercedes. Allegedly other manufacturers also on this solution. Mercedes Benz’s Mr Summer says: “The steel pistons for the passenger car diesel will soon become the industry standard.”
- More Pressure: VW development chief Heinz-Jakob Neußer announced for the new Passat is already the “strongest ever offered VW four-cylinder TDI” – a unit with two-liter displacement and 240 hp. This is due to a significant increase in pressure in all areas: Two turbochargers compress the air with up to 3.8 bar in the cylinder; the fuel is injected with up to 2500 bar. The combustion pressure in the cylinder rises to 200 bar. In order to withstand this load, the engine had to be considerably strengthened. Nevertheless, the consumption of the power plant can be reduced to an average of five leiters, according to VW.
- Electric Booster: According to Audi – the boundaries of what is possible in a diesel engine are not reached. The Germans just celebrated the 25th anniversary of the TDI engine with a prototype based on the RS5. Under the bonnet lies a V6 diesel, which is the first time combined with an electric turbocharger. This so-called E-Booster speeds within 200 milliseconds to 72,000 rpm and allows the engine to be able to react very spontaneously. By upgrading the three-liter engine delivers a maximum 385 hp. This performance however does not impact the consumption. It’s all technology: An electric turbocharger requires an electrical system with 48 volts. This is time consuming and expensive and is only worthwhile in the complete redevelopment of a car.
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