BMW EfficientDynamics

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BMW 118d ( E87 from 2009) with 105 kW (143 PS) and 4.5 l / 100 km consumption according to ECE ( NEDC )

With the marketing name EfficientDynamics, the automobile manufacturer BMW is promoting a package of various technical measures for some models that are intended to reduce fuel consumption. The package was decided in 2003 and gradually brought into series production in early 2007. BMW indicates savings of up to 15%.

Some four-cylinder and six-cylinder gasoline engines ( N43 and N53 ) use second-generation direct injection ( High Precision Injection ); this enables combustion in stratified charge mode . A stoichiometric fuel ratio is only generated directly around the spark plug , which results in a significant increase in efficiency in partial load operation . In diesel engines , combustion is optimized by third and fourth generation common rail systems .

The 1 , 3 and X1 models with a four-cylinder engine and manual gearbox have a start-stop system as standard , which stops the engine when the vehicle is stationary as soon as a gear is not engaged and the clutch pedal is not pressed. As soon as the clutch is operated again, the engine is started without delay. This avoids idle times at traffic lights and level crossings, for example. In the 5-series models, it was initially offered as standard for the 520d model with manual transmission. With the 8-speed automatic transmission available as an option, the start-stop function is possible for the first time for various BMW models with automatic transmissions. The automatically switched ActiveHybrid X6 and ActiveHybrid 7 are also equipped with a start-stop function. The engine is switched off as soon as the vehicle has come to a standstill and the brake pedal is depressed. As soon as the brake pedal is released, the engine starts again.

In all manual transmission models, a shift point display shows the driver the optimum shift times; this can help to stay in the most efficient speed range possible.

The brake energy recovery ensures that the generator ( alternator ) charges the battery mainly in overrun mode . This optimizes the use of the kinetic energy of the vehicle compared to a vehicle without such a device. This technology is sometimes viewed as a micro-hybrid; this relates to the recuperation capability (the generator cannot take on a driving function).

The power steering is implemented electrically. The advantage over a conventional hydraulic system is the need-based control of the system only when steering. The technology does not consume any energy when driving straight ahead (e.g. on the motorway).

A radiator grille increases the drag of a car by swirling the air flow . Controlled air flaps behind the BMW kidney grille reduce this by only opening when the cooling capacity is required. The engine's warm-up phase is shortened and fuel consumption is reduced.

Other vehicle manufacturers also offer similar packages, for example BlueMotion from VW or BlueEFFICIENCY from Mercedes-Benz . However, (early / mid-2010s) these are reserved for specially designated models, while BMW uses the term EfficientDynamics for all models. In the case of the Mini brand models , the EfficientDynamics package is marketed under the name MINIMALISM .

Concept Vision Efficient Dynamics

In August 2008, the one millionth BMW with EfficientDynamics was delivered.

At the IAA 2009 in Frankfurt, BMW presented the Vision Efficient Dynamics concept vehicle . The study, which is equipped with two electric motors , is intended to embody BMW's efforts to integrate consumption and emission reductions into the vehicle range. This also includes the waiver of all-wheel drive in some versions of the BMW X1 ( sDrive ).

From 2010 BMW offered the 2 L diesel as the BMW 320d EfficientDynamics Edition . This variant, reduced in power to 163 hp, achieved CO 2 emissions of 109 g / km. From the end of 2011 such a model was also available in the BMW 5 Series.

From around 2013, three-cylinder B37 and B38 engines were introduced to save fuel .

Web links

Individual evidence

  1. ↑ presseportal.de motor presse stuttgart from January 30, 2008, Paul Pietsch Prize 2008 for BMW Efficient Dynamics , accessed on April 21, 2019.
  2. ↑ a b c n-tv.de of August 29, 2010, Unterwegs im Diesel-Blitz , accessed on April 21, 2019.
  3. ↑ a b BMW AG, August 2008, 1 millionth BMW delivered with EfficientDynamics , accessed on April 21, 2019.
  4. ↑ Tom Grünweg: The UFO from the planet (ambition) avarice. In: Spiegel Online from August 30, 2009, accessed on April 21, 2019.
  5. ↑ n-tv.de (dpa) of September 28, 2009, BMW intensifies austerity efforts , accessed on April 21, 2019.
  6. ↑ spiegel.de of August 4, 2012, weight loss with home cooking , accessed on April 21, 2019.
  7. ↑ adac.de from October 2011, test of the BMW 520d Edition EfficientDynamics (PDF, 697 kB), accessed on April 21, 2019.
  8. ↑ The new MINI (https://www.press.bmwgroup.com/deutschland/pressDetail.html?title=der-neue-mini&outputChannelId=7&id=T0164833DE&left_menu_item=node__5129) , January 2014, accessed on April 21, 2019.
  9. ↑ bimmertoday from July 21, 2015, BMW 3 Series Facelift 2015: Double interview on F30 ... , accessed on April 21, 2019.