volkswagen-new-diesel-engine

At the Vienna Motor Symposium in May, Volkswagen announced, amongst others, a new 240 PS 2.0 litre twin-turbo diesel engine and a 10-speed DSG. That engine will be found under the bonnet of the new Passat, but VW has now unveiled a version of that motor equipped with electric turbocharging.

Thanks to the addition of a two-stage electrically-driven turbo and a new variable valve timing system, the four-cylinder BiTDI now makes 272 PS, and we suppose, more than the 500 Nm the Passat is blessed with. No word yet on which VW model will get it first.

The principle behind electrically-driven forced induction is that the turbines can be spooled up quickly, minimising turbo lag. All known efforts (Audi, Kia, Volvo) so far concentrate on diesel engines.

Audi has done it to its 3.0 BiTDI V6, replacing one of the conventional turbos with a electrically-driven one. Kia’s Optima T-Hybrid concept has a 1.7 litre diesel engine that features a conventional turbo and an electric supercharger. Volvo’s “High Performance Drive-E Powertrain Concept,” however, sees two parallel turbos fed by an electrically-driven compressor to result in “no less than 450 hp”!

Volkswagen has also said that its upcoming 10-speed DSG, code-named DQ551, will be able to handle up to 550 Nm of torque. An evolution of the six-speed DQ250 wet-clutch unit, the gearbox will feature a coasting function and a new regenerative braking system.

Other new technologies mentioned include Stop-start 2.0 (engine shuts off below 7 km/h), infrared-reflecting dashboard, infrared-rejecting sunroof glass, a range manager for electric vehicles, need-based air-conditioning and Predictive Navigation (learns the driver’s routes and commutes).