Bayerische Motoren Werke AG – BMW is developing a new family of modular turbocharged engines, which will be used across the company’s entire range of cars, including Minis, from 2014-15.
The engines have been designed around the concept of a single cylinder of ‘about 500cc’, that will serve as a building block for upcoming three, four, and in-line six cylinder gasoline and diesel engines.
Three-cylinder engines will therefore have a capacity of 1.5 litres, the four-cylinders will be 2.0-litre units and the six-cylinders will be 3.0s. A variety of power outputs will be possible by using single or twin turbochargers.
Along with turbocharging, all EfficientDynamics engines will use direct injection and the Valvetronic variable valve-lift system. BMW is branding that technology trio TwinPower Turbo, much in the way Ford uses EcoBoost to describe turbocharged, direct-injected engines.
Moreover, all three and four-cylinder petrol and diesel engines developed according to this principle offer the prerequisites for both longitudinal and transverse installation in future BMW or MINI models respectively. Additional efficiency in development and production is achieved through standardised interfaces between power units originating from the BMW modular engine system and each specific vehicle.
The idea is that this common cylinder architecture allows for significant shared componentry. It accounts for 60% shared components among gasoline variants and a like percentage among diesel variants, with 40% commonality between the diesel and gasoline variants.
Power: Gasoline: 60-100 Nm, 30-50 kW; Diesel: 75-100 Nm, 20-40 kW
While the U.S. market will receive the N20 turbocharged inline four-cylinder in 2012, that engine is not one of the new modular powertrains. The first EfficientDynamics engine should arrive in three to four years.