BMW N20 Engine For Sale
This engine, introduced in March 2011, is part of the BMW EfficientDynamics program, wanted by the Bavarian company and started a few years earlier in order to build engines and adopt other technical solutions in order to reduce consumption and polluting emissions, while safeguarding the performance of the cars. Among the directives of this program there is obviously also the so-called “downsizing” process, which means replacing the engines in use with others, newer and with a displacementmore contained, but with similar performance and designed to reduce fuel consumption and toxic emissions. This is the context of the birth of the N20 engine, a 2-liter four-cylinder engine supercharged by a twin-scroll turbocharger, that is, with a split duct turbine.
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This engine intends to replace the 3-liter N52 and N53 engines over time, compared to which it stands out for its greater lightness (15 kg less), thanks to the massive use of aluminum alloy, and for lower average consumption (on average 1.5 liters less every 100 km).
These are the characteristics of the N20B20 engine:
Front “naked” view of BMW N20 engine
4- cylinder in- line architecture ;
monobloc, base and head in aluminum alloy;
bore and stroke : 84×90.1 mm ;
displacement: 1997 cm³ ;
cylinder head with 4 valves per cylinder;
distribution with two overhead camshafts ;
variable bi-VANOS timing with Valvetronic device for variation of the lift ;
power supply: High Precision Injection direct injection;
turbocharging by twin scroll turbocharger ;
crankshaft on 5 main bearings.
It should be noted that, although the maximum power is lower than that of the 258 HP 3-liter N53, the peak of 245 HP is reached at 5000 rpm instead of 6600, and how the maximum torque is significantly increased, going from 310 to 350 Nm Especially this last figure gives an idea of the lower stresses the engine undergoes and its higher efficiency, factors that converge in a significant reduction in consumption. This last feature is also due to the contribution of the Start & Stop device integrated into the engine itself. The N20 engine made its debut in March 2011 under the hood of the BMW X1 xDrive28i, and in the 245 HP version, but six months later it was joined by a weakened version, capable of developing 184 HP. In 2012the family is further expanded with the arrival of an intermediate version capable of delivering up to 218 hp.