Our full range of Turbocharged Direct Injection (TDI) engines to common rail engines are responsive and fun to drive, as well as being superbly efficient, cleaner and quieter.
The new common rail TDI engines from Volkswagen use less fuel and have lower emissions. And compared to the unit injector principle, common rail technology means less engine noise, so you'll enjoy a quieter drive. Our engine technology consistently helps our cars receive great reviews for refinement and driving pleasure.
The common rail system is a type of high-pressure fuel direct injection system. with pressure being generated continuously by an independent pump that can be fitted anywhere on the engine. This pressure is stored in the distributor rail, a high-pressure fuel reservoir known as the 'common rail'. Lines connect all the cylinder injectors to the common rail in parallel, ensuring that all injectors have an uninterrupted supply of constant pressure.
The majority of our TDI engines are turbocharged using variable turbine geometry. An intercooler is also incorporated into the system, lowering the temperature of the hot compressed gas leaving the turbo and enhancing power and efficiency. The combination of TDI and common rail technology is a major step forward in advancing our environmental and sustainability strategy.
Article source: www.volkswagen.co.uk