BorgWarner is supplying the advanced variable turbine geometry (VTG) turbochargers for the newly developed 1.4-liter three-cylinder diesel engines from the Volkswagen Group, for both the 55 kW (74 hp) and 66 kW (89 hp) variants. Both engines comply with Euro 6 emissions standards and improve fuel economy up to 21% compared with the predecessor vehicles.
|BorgWarner’s advanced VTG turbocharger for Volkswagen’s newly developed 1.4-liter three-cylinder diesel engine. Click to enlarge.|
Debuting in the VW Polo, the 55 kW diesel engine powers one of the most fuel-efficient 5-seat diesel cars in its segment and achieves an average fuel consumption up to 75.8 mpg (3.1 liters/100 km). Based on the modular diesel engine system, the fuel-efficient and low-emission engines will be available for several vehicles from Audi, Seat, Škoda and VW.
BorgWarner’s latest VTG turbocharging technology provides precise adjustment to the relevant engine operating points for optimum power output. To improve thermodynamics and engine response at very low rpm, BorgWarner’s patented S-shaped guide vanes regulate VTG turbine output by changing the inflow angle and speed at the turbine wheel inlet.
The new turbocharger significantly improves engine response and increases efficiency in the low rev band, resulting in increased combustion efficiency and reduced emissions.