BMW 5 Series ‘clean sheet’

5-series | March 31st, 2010 by 2
bmw_5_series_2010_3

Our close friend Richard Aucock is back again with more news around the new 5 Series. This new episode ties into the one published yesterday …

Our close friend Richard Aucock is back again with more news around the new 5 Series. This new episode ties into the one published yesterday when Jos van As, BMW Group Driving Dynamics Director, talked about the ride quality in the new 5 Series Sedan.

Here is an excerpt:

“BMW’s new F10 5 Series may be closely associated with the 7 Series and 5 Series GT, but this doesn’t mean it’s simply a modified version of those cars.

‘In terms of driving dynamics, we always start from a clean sheet,’ explained Jos van As. But how, given the interrelation of components? By starting from the start, not working backwards.

BMW 5 Series ‘clean sheet’

Van As talks through the methodology, showing the 5 is more than a scaled down 7 (or, indeed, a 1/6th-price Rolls-Royce Ghost…). His work begins before a CAD pixel is created, through a logical build-up process:

  • DNA – ‘Here, we define proportions, weight distribution, drive concept, aero effects such as lift coefficient front and rear, and so on’
  • Suspension – Spring and damper rates are decided upon (‘ride quality was the focus with F10’)
  • Tyres – Design of car, weight of car under different load conditions (‘for example, we can decide what size wheels we can fit, and what pressures we need’)
  • Steering – Ratio, speed of response (‘the 5 Series has EPAS, like the 7 Series, but the ratio is faster’)

Once you have all this, you can begin setting up the standard suspension. With the 5 Series, says van As, ‘a team of 4 engineers set up the standard car.

‘This standard car is the base; we add on dynamic features to this platform, all controlled by ICM.’

Continued here

  • http://www.facebook.com/profile.php?id=100000404206443 Misha Nikolich

    Very interesting read. Thanks, H.

  • michael

    the wheels look very similar to the flame wheels on the mini
    they’re beautiful!

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