Turbocharged Direct Injection
Turbocharged Direct Injection (TDI) diesel engines are responsive and fun to drive, as well as being very efficient. They offer more power, with great fuel economy, which all helps to lower emissions.
Why drive a TDI?
You’ll enjoy the savings. Economical fuel consumption, long service and maintenance intervals, plus low emissions, all combine to keep costs low.
You’ll love the drive. Our turbo diesel engines offer exceptional torque even at low revs. This results in tremendous fun at the wheel, thanks to their effortless acceleration and sparkling performance.
You’ll feel the power. High levels of pulling power over a wide rev range offer real driving pleasure.
TDI identifies all our advanced diesel engines using direct injection and a turbocharger. TDI engines are economical and smooth with high levels of torque (pulling power) and good energy efficiency.
Turbocharged Direct Injection How does it work?
Fuel needs oxygen to burn and the engine has to be supplied with huge quantities of air to get enough. You can solve this problem with a bigger engine – or you can solve it with a turbocharger – as in the TDI. Driven by the exhaust gases, it squeezes air more tightly into the cylinders.
After being drawn through the turbocharger the air is then cooled by passing it through an air to air intercooler (cool air takes up less space than hot air), before entering the combustion chamber where diesel is injected directly into the cylinders at very high pressure through a nozzle. It’s this intensive mixing of highly atomized fuel with the cooled compressed air that leads to better, more efficient combustion.
Your driving experience is quiet and refined because effective sound insulation keeps noise to a minimum, while hydraulic engine mounts ensure smooth, low-vibration running.