We previously reported that BMW has plans to expand its TwinPower Turbo technology to its entire future 4-cylinder engine range. Word now comes from BMW AG that the future 3-cylinder engine range (gasoline and diesel) will also receive the TwinPower Turbo treatment.
The TwinPower Turbo package combines a single twin-scroll turbocharger, direct injection and full variable valvetronic. It first debuted on the N55 motor in the 5-series GT in 2009 and most recently on the first 4-cylinder motor, with the 2.0L N20 gasoline engine (full N20 details) in the X1 xDrive28i. The use of this technology allows for increased horsepower while decreasing CO2 emissions. As an example, the N20 outputs 245hp compared to just 156hp from the naturally aspirated version.
No timing yet on when the first TwinPower … CONTINUED
The auto industry is going the way of forced induction and BMW is no exception. Autocar is reporting that BMW will be turbocharging its entire range of 4-cylinder engines in the near future and that the 4-cylinder turbo motors will be used for all models up to 241 horsepowers. Beyond that power threshold, the inline 6-cylinder will be the motor of choice.
All 4-cylinder turbo engines will be based on same new-generation 2.0L aluminum block, with each variant achieving different power outputs with their varied turbocharger units and engine management software maps. This new 2.0L block gets a new type of cylinder lining, which sees iron sprayed on at a thickness of just 0.3mm, instead of using conventional 1.5mm thick cast iron liners.
The range-topping 241bhp version (N20B20) … CONTINUED