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BMW Technology Explained

xDrive – The BMW all-wheel drive system, xDrive, ensures your BMW has the best possible traction at all times, enhancing agility and keeping you safely on track, even on fast bends.

xDrive is the permanent all-wheel drive system from BMW: under normal circumstances, it distributes driver power between the front and rear axles in a 40:60 ratio, and changes this figure variably when the road surface or overall driving conditions change.

sDrive – BMW’s only rear wheel drive cars.

Efficient Dynamics – BMW Efficient Dynamics is an innovative programme to reduce fuel consumption and CO2 emissions while enhancing dynamic performance and driving pleasure. It consists of many technologies used to achieve this goal. Some of them are: Engine Auto Start/Stop Function, Brake Energy Regeneration, Electric Power Steering and others.



TwinPower Turbo – The multiple award-winning petrol and diesel engines with BMW TwinPower Turbo technology are among the innovations from BMW EfficientDynamics. They combine the latest fuel injection systems, fully-variable performance control and innovative turbocharger technology.

Active Steering – Technology which lets you do less movements with steering wheel while driving at lower speeds.  And to ensure smoothness at higher speeds, as of around 120 to 140 km/h (depending on the model) Active Steering becomes more indirect. Continue reading

How BMW’s 2 litre petrol engine evolved during the years

One of the most popular BMW engines was and still are 2 litre engines especially in countries where taxes are high.

Many people choose 2 litre engine because of the final car price including customs clearance and due to less fuel consumption.

Let’s see how BMW’s 2 litre engine changed during the years.

1965–1976: M05 1,990 cc (121.4 cu in) 90 kW (122 PS; 121 hp) 167 N·m (123 lb·ft). Used in BMW 2000, 2000C and 2002.

1974: M31 engine (based on M10) is 4 cylinder inline petrol engine by BMW with 1990cc which produced 170 hp (125 kW) and 177 lb·ft Torque 240 Nm at 4000 rpm.


BMW M31 (M10)

1977-1981: M20B (90 kW (120-125 hp) @6000). There was a few modifications of this engine: M20B20, M20Kat, M20B20 L-jetronic and M20B20 Motronic.

1987: S14 engine was made. It was based on M10 block and had 1990cc which produced 192HP.

There were a few versions of S14 with different power and target-countries.

Different S14 modifications were used on BMW M3 E30.

For example S14B20 was sold in Portugal and Italy only fitted on BMW E30, 320iS.

S14 combines the basic four-cylinder block from the M10 family with a four-valve head derived from the one used on the six-cylinder M88 and S38 motors. Special features of this engine include individual throttle plates for each cylinder, machined intake and exhaust ports, and a crankshaft with eight counterweights. (C)

1990-1995: M50 6 cylinder inline DOHC 24v petrol engine. 1991cc with 110 kW / 150 HP at 5900 rpm. I remember my E34 520i had this engine. I enjoyed it a lot even there was a lack of power, at least now I think so 🙂

1991: M43(4 cylinder inline SOHC 8v petrol engine) with a few modifications. M43/1 which at 1990 cm3 provided 80 kW / 109 HP at 5800 rpm.
M43TU B19 1895 cm3 77 kW / 105 HP at 5300 rpm and 3rd one M43TU B19 1895 cm3 87 kW / 118 HP at 5500 rpm.

bmw m43 engine


1994-2001 M52 6 cylinder inline DOHC 24v VANOS petrol engine. With 1991cc it provided 110 kW (150 hp) @ 5900. I remember good old times when my brother in law had an E39 520i. Very nice memories of that car.

2004: N46B20 (4 cylinder inline DOHC 16v Valvetronic petrol engine) 1995cc four versions of this engine are available with output power ranging from 127 to 148 HP. Used in E46, E85, E87, E90, E84 and E60 where 116 kW and 200 N·m (148 lb·ft) version was used.

2006: N45B20S 130 kW (177 PS; 174 hp) @ 7000 210 N·m (155 lb·ft) @ 4250. This engine was used in 2006 E90 320si.

2007: N43 features direct injection and at 1995cc had 2 modifications with different output power and these are: N43 B20 00 with 125 kW / 170 HP at 6700 rpm (remember E60 520i 2007?) and N43 B20 UO with 105 kW / 143 HP at 6000 rpm.

2011: N20 The inline-four cylinder engine with 1997 cc and since 2011 evolved from 184 HP to 245Hp. This engine placed in Ward’s 10 Best Engines List in 2012 and in 2013. Currently five models feature the 2.0-liter TwinPower Turbo 4-cylinder – Z4 sDrive28i, 528i Sedan, 328i Sedan, X3 xDrive28i and more recently, the X1 sDrive28i/xDrive28i.

2012: N26 Due to some emissions restrictions in some countries BMW had to made this engine which is Super Ultra Low Emission Vehicles) turbocharged straight-4 cylinder with 1997cc and provides 180 kW (245 PS; 241 hp) @ 6500. This engine is used in BMW 328i, 528i, X1 x/sDrive 28i, X3 xDrive 28i,Z4 sDrive28i.



REFERENCES: For references were used wikipedia and many other web-sites. If you see any mistakes or wrong information please contact me so I can correct it. Thank you beforehand.