BMW introduces the B47 engine in the all-new BMW 220d Coupe. With a new four-cylinder diesel power unit under its bonnet and the optional 8-speed Steptronic transmission, the BMW 220d Coupe not only hits the 100 km/h mark in a mere 7 seconds, but also attains a CO2 emission level of less than 100 grams.
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The B47 2-liter diesel power unit is a member of the new BMW Group engine family and features the latest version of BMW TwinPower Turbo technology. It produces a maximum power output of 140 kW/190 hp and maximum torque of 400 Newton meters. The six-speed manual has also received an upgrade therefore the fuel consumption is a remarkable 3.8 to 4.1 liters per 100 km. A reduction in fuel consumption of up to 0.4 liters/100 km and of CO2 emissions by as much as 12 g/km.
Compared with the predecessor engine, the power unit deployed in the BMW 220d Coupe achieves a 5 kW increase in output and a 20 Nm higher maximum torque. Te weight of the new engine has dropped by around two kilograms. Advancements have also been made in terms of acoustic comfort and the starting behavior of the Auto Start Stop function.
The most significant attributes of the new four-cylinder diesel engine include the aluminum crankcase featuring thermally joined running bushes for reducing internal friction coefficients, integrated balanced shafts, enhanced thermodynamics, a map-controlled oil pump and an efficiency-optimized supercharger with variable intake geometry. Likewise optimized Common Rail Direct Injection features solenoid valve injectors that now guarantee a particularly accurately dosed fuel supply thanks to a maximum injection pressure of 2000 bar.
The new manual transmission of the BMW 220d Coupe offers control of power throughout the entire speed range, thereby optimizing the car’s dynamic acceleration characteristics as well as gear shift comfort. During the gear shift process, with the help of a gear selector sensor, engine speed and the transmission input shaft are synchronized in order to ensure smooth engaging of the clutch.
The latest version of the 8-speed Steptronic transmission offers increased spread, further optimized internal efficiency, further enhanced transmission control and a new vibration absorber. This results not only in improved acoustic and ride comfort but also in better shifting dynamics and efficiency.
Acceleration from 0-100 km/h has now improved by 0.1 seconds to 7.1 seconds (manual 6-speed transmission) and 7.0 seconds (8-speed Steptronic transmission) respectively.
Thanks to the increase in the engine’s power output, maximum trailer load of the BMW 220d Coupe is up by 300 to 1 500 kilograms.