Bosch Improves Fuel Economy, Boost Gas Mileage, Finer Atomization of the Fuel and Reduced Emissions

Modern diesels are cleaner than ever before, and to show how efficient they are, the latest generation made its debut on the racetrack, proving that even under rigorous full race driving conditions the diesel vehicles remain clean and green — and highly fuel efficient! Thirty of the new VW Jetta Diesel TDIs, powered by a 2.0-liter four cylinder that produces 170 hp and 258 lb.-ft. of torque, tackled some of the top road racing courses in North America in the Volkswagen Jetta Diesel TDI Cup, a multi-race series of basically stock Jetta 'clean diesels' racing hard at major road tracks from Lime Rock to Road Atlanta. "What we have here are virtually stock diesel passenger cars that raced hard throughout the summer and fall, averaging fuel mileage in the mid-twenties and running absolutely clean under very tough full road race conditions. This is green personified," says Wolfgang Hustedt, Motorsports Manager for Bosch, which supplies the advanced fuel system that helps make these vehicles fuel efficient and 'green.' 'Common Rail' Key to Efficiency The heart of these clean, highly efficient engines is a Bosch common-rail fuel injection system that uses fast, precise Bosch piezoelectric fuel injectors, instead of a traditional mechanical system. This technology permits higher injection pressures, which better atomize the fuel, enhances performance and makes it easier to control pollution. READ MORE