BMW to expand TwinPower Turbo package to 4- and 3-cylinder engines

Article by Christian A., on March 22, 2011

BMW AG will be expanding the use of its TwinPower Turbo package to 4- and 3-cylinder engines – comprising both gasoline and diesel variants. In 2009, this package, which features a combination of twin-scroll turbocharging, direct gasoline injection and fully variable Valvetronic valve management systems, had debuted in a 6-cylinder 3.0-liter gasoline engine that powered the 5-series GT midsized model.

At the recently held Geneva auto show, BMW displayed the first application of the TwinPower Turbo package in a 4-cylinder engine, the 2.0-liter gasoline unit that powers the BMW X1 medium SUV. BMW was able to reduce carbon dioxide emissions by 30 percent between 1995 and 2010 but the carmaker is committed to further cut this level by 25 percent more by 2020.

To accomplish this, Autonews says that BMW is expanding the TwinPower Turbo technology to a broader range of engines. In 2010, BMW group sales in Europe averaged 148 g/km of carbon dioxide emissions. This is equivalent to 5.4 liters per 100 km with diesel engines and 6.6 liters with gasoline models.

The BMW X1, which has been fitted with the TwinPower Turbo package, returns 7.9 liter/100km and it has a carbon dioxide emissions level of 183 grams per km. BMW claims that this is 16 percent lower than a larger displacement engine that offers the same performance.

However, this package raises max output by 43 percent to 245 hp over a normally aspirated 2.0-liter unit. BMW has yet to announce when the TwinPower Turbo package will be offered on a new family of 3-cylinder engines, which are meant to be used in the upcoming Mini subcompact and entry models of the BMW range.

Dubbed N20, the new 2.0-liter twin turbocharged four-cylinder engine will be making its debut in the 2011 BMW X1 xDrive28i, as introduced in March at the 2011 Geneva Motor Show. This new 2.0-liter twin turbocharged four-cylinder will also be found on the hood of BMW Z4 coupe cabriolet and even the BMW 5-Series later this year. Apparently, the new mill is considered as an indirect replacement for the least powerful version of the popular 3.0-liter in-line six-cylinder petrol engine.

This engine -- the first one to feature the BMW TwinPower Turbo technology – can deliver 180 kW (245 hp) of max output and 350 Nm of torque. With these power figures, the BMW X1 can sprint from zero to 100 km/h (62 mph) in just 6.1 seconds, or around 6.5 when the SUV is fitted with automatic transmission.

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Topics: bmw, engine

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