BMW has announced its next-generation of modular three and four-cylinder engines that are expected to debut in the next-generation 3 Series in late 2017.
The new engines are said to be more efficient, along with being more smoother and powerful than BMW's current line of three and four-cylinder engines.
The new engines, claim BMW, produce on an average 7bhp and around 20Nm of torque more than the existing engines that they will replace.
CO2 emissions are down by five percent. BMW claims that there is a significant decrease in Nitrous Oxide emissions and particulate pollutant levels, thanks to a new cylinder cooling system, along with Selective Catalytic Reduction (SCR) exhaust gas treatment.
The three-cylinder diesel engines will push out either 95bhp and 220Nm of torque or 114bhp and 270Nm of torque. The four-cylinder engines will be available in three variants producing 147bhp and 350Nm of torque, 188bhp and 400Nm of torque, and 231bhp and 450Nm of torque respectively. No power or torque outputs for the petrol engines have been provided.
The three-cylinder engines will receive new balancer shafts, which are said to improve NVH levels. The four-cylinder engines, on the other hand, will feature twin-scroll turbocharging, formerly reserved for high-performance BMWs like the M division cars. Both types of engines will also get higher fuel-injection pressure levels, which will max out at 2,700 bar.
The new engines will eventually be found in every BMW from the 1 Series hatchback to the 5 series sedan, and will also be seen under the hoods of every Mini except the new Countryman which is expected to arrive before the engines do.
Source - AutoExpress