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X1 - E84 (2009 - ...) - Drivetrain:More Power, More Diversity, More Efficiency.

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Drivetrain:More Power, More Diversity, More Efficiency.

• BMW X1 sDrive18d offering best-in-class fuel economy and CO2 emission control.
• Straight-six with 190 kW/258 hp right at the top.
• Wide range of BMW EfficientDynamics including Auto Start Stop.
“Introducing the BMW X1, we offer greater efficiency and dynamics also in this segment – and the best combination of both of these benefits in each model.” Wolfgang Hall, Head of Diesel Engine Development BMW X models offer a particular rendition of the Sheer Driving Pleasure so typical of the BMW brand – and the BMW X1 combines this unique experience with a standard of efficiency quite unparalleled in its segment: The BMW X1 sDrive20d and the BMW X1 sDrive18d are the first cars of their kind to emit less than 140 grams per kilometre of CO2 in the EU test cycle. The other model variants also offer an unusually positive balance of driving pleasure and fuel economy thanks to their engine with an unusually high standard of efficiency and the wide range of BMW EfficientDynamics technologies naturally featured as standard in an appropriate combination on each model.
These technologies include Brake Energy Regeneration, optimised aerodynamics, intelligent lightweight engineering, final drive with optimised warm-up behaviour as well as ancillary units operating on demand such as the electrical fuel pump and the detachable a/c compressor. The manual gearbox models, in turn, come with an Auto Start Stop function and a gearshift point indicator.
BMW has developed a new power divider with optimised efficiency for the xDrive all-wheel-drive system, and the power unit in the BMW X1 xDrive28i comes in addition with a map-controlled oil pump.
Last but certainly not least, all variants of the BMW X1 naturally fulfil the EU5 emission standard.

Top-of-the-range power unit: straight-six with composite magnesium/aluminium crankcase and VALVETRONIC.
The BMW X1 xDrive28i with its straight-six gasoline engine developing maximum output of 190 kW/258 hp at an engine speed of 6,600 rpm is definitely the top performer in its segment. At the same time this 3.0-litre develops its peak torque of 310 Newton-metres/221 lb-ft between 2,600 and 3,000 rpm. Featuring a composite magnesium/aluminium crankcase, fully variable VALVETRONIC valve management and infinite double-VANOS camshaft control, this outstanding power unit excels furthermore through its low weight, superior running smoothness and free-revving performance so typical of a BMW six-cylinder, as well as optimised response at low engine speeds.
The use of magnesium on the crankcase as well as lightweight camshafts with VANOS units made of aluminium makes the six-cylinder unusually light for an engine of its class. VALVETRONIC has already made a great name for itself worldwide as a particularly effective technology for enhancing efficiency in a wide range of BMW engines. Infinitely controlling valve lift on the intake valves, VALVETRONIC makes the conventional throttle butterfly used on former engines absolutely superfluous, reducing throttle losses in the charge process to a minimum.
Engine response is also optimised in this way, since the air mass required for combustion in the engine is masterminded by and within the engine itself, and does not require exterior control with wasted volume.
All this serves to capitalise on the efficient use of energy in the fuel consumed, providing a “beefy” torque curve and ensuring optimum engine response. And last but not least, double-VANOS camshaft control with its infinite spread of intake and exhaust valve angles provides high torque right from the start at low engine speeds.
The BMW X1 xDrive28i accelerates from a standstill to 100 km/h in 6.8 seconds and reaches a top speed of 205 km/h or 127 mph (230 km/h or 143 mph with optional high-speed set-up). Through this outstanding efficiency and the wide range of technologies used to reduce fuel consumption and emissions, average fuel consumption in the EU cycle is just 9.4 litres/100 kilometres (equal to 30.0 mpg imp) and the CO2 rating is 219 grams per kilometre.

Supreme pulling force thanks to BMW TwinPower Turbo Technology on the four-cylinder diesel.
The four-cylinder diesel with BMW TwinPower Turbo and fourth-generation common-rail direct fuel injection in the BMW X1 xDrive23d combines impressive traction and pulling force with outstanding efficiency. The 2.0-litre all-aluminium power unit featured in this model delivers maximum output of 150 kW/204 hp at an engine speed of 4,400 rpm and peak torque of 400 Newton-metres/295 lb-ft from 2,000 to 2,250 rpm.
The charge system following the Variable Twin Turbo principle gives the engine a fascinating and direct response at all times. Applying this principle, a small turbocharger first cuts in at low engine speeds, developing superior power thanks to its low inertia right from the start and following the slightest movement of the gas pedal without any delay. Then, with engine speed increasing, the second, larger turbocharger also cuts in.
A turbine control flap divides the flow of exhaust gas variably among the two turbochargers, with the system being controlled and masterminded by particularly efficient engine electronics.
Piezo-injectors ensure particularly precise injection of fuel up to a pressure of 2,000 bar. Together with this unusually high injection pressure, the arrangement of the injectors and the valves guarantees efficient and very economical dosage of fuel as well as a smooth and consistent combustion process again making a significant contribution to clean emission management right from the start.
The BMW X1 xDrive23d accelerates from a standstill to 100 km/h in 7.3 seconds. Top speed is 205 km/h or 127 mph (223 km/h or 138 mph with the optional high-speed set-up). This sporting performance comes together with average fuel consumption of just 6.3 litres/100 kilometres (equal to 44.8 mpg imp) and a CO2 rating of 167 grams per kilometre in the EU test cycle.

x1_e84_white_wheel

The starting point for outstanding efficiency: four-cylinder diesel with turbocharger and common-rail direct fuel injection.
A turbocharger with variable intake geometry and common-rail fuel injection using piezo-injectors operating up to pressure of 1,800 bar gives the second four-cylinder diesel in the BMW X1 maximum output of 130 kW/177 hp at an engine speed of 4,000 rpm as well as maximum torque of 350 Newton-metres/258 lb-ft all the way from 1,750 to 3,000 rpm. Again displacing 2.0 litres, this all-aluminium diesel accelerates the BMW X1 xDrive20d to 100 km/h in 8.4 seconds, the BMW X1 sDrive20d completing the same exercise in an even faster 8.1 seconds.
Top speed in each case is 205 km/h or 127 mph, which may be raised with the optional high-speed set-up to 213 km/h (132 mph) in the X1 xDrive20d and, respectively, 218 km/h (135 mph) in the BMW X1 sDrive20d.
Fuel consumption and emissions are reduced to a minimum in both models: Average fuel consumption in the EU test cycle is 5.8 litres/100 kilometres (equal to 48.7 mpg imp) in the BMW X1 xDrive20d and 5.3 litres/100 kilometres (equal to 53.3 mpg imp) in the BMW X1 sDrive20d.
The corresponding CO2 ratings are 153 and, respectively, 139 grams per kilometre.
The 105 kW/143 hp version of the four-cylinder diesel featured in the BMW X1 xDrive18d and the BMW X1 sDrive18d provides an even more economical entry into the world of BMW X models. This engine again comes with common-rail direct fuel injection and a turbocharger with variable intake geometry, delivering peak torque of 320 Newton-metres/236 lb-ft between 1,750 and 2,500 rpm and reaching its maximum output at 4,000 rpm. Acceleration from a standstill to 100 km/h comes in 10.1 seconds in the BMW X1 xDrive18d and in 9.6 seconds in the BMW X1 sDrive18d, with top speed of 195 km/h (121 mph) and, respectively, 200 km/h (124 mph).
The BMW X1 xDrive18d consumes an average of just 5.7 litres/100 kilometres (equal to 49.6 mpg imp) in the EU test cycle and has a CO2 emission rating of 150 grams per kilometre. The absolute record in terms of fuel consumption and emissions is set by the BMW X1 sDrive18d with its average fuel consumption of 5.2 litres/100 kilometres (54.3 mpg imp) and a CO2 emission rating of 136 grams per kilometre.

Six-speed automatic transmission with short reaction and gearshift times.
Both the BMW X1 xDrive28i and the BMW X1 xDrive23d come as standard with six-speed automatic transmission. This automatic transmission also available as an option on the BMW X1 xDrive 20d instead of the six-speed manual gearbox featured as standard not only promotes driving comfort, but also enhances the agile behaviour of this compact BMW X model.
The sporting driving characteristics of all models within the BMW X1 range are attributable in particular to the direct connection to the engine, with the clutch closing immediately after setting off. A further important factor is the use of modern torque converter technology with an integrated torsion damper avoiding any unnecessary slip and loss of power. The result is a driving impression very similar to the typical character of a manual gearbox vehicle, the gas pedal responding immediately, with reaction and gearshift times reduced to a minimum. Even shifting back more than one gear does not require any more time thanks to direct access to the gear lane required.
And last but not least the Steptronic function on the automatic transmission gives the driver the option to shift manually.



Last Updated on Saturday, 01 May 2010 17:27  
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