BMW F97, Техническое учебное пособие

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F97/F98�Complete�Vehicle
3.�Body
15
3.2.4.�Underbody�and�thermal�protection
Underbody
The�stiffening�plate�has�been�carried�over�from�the�G01/G02.�The�engine�underguard�is�a�new�part
with�an�integrated�air�outlet�for�the�additional,�horizontal,�forward-mounted�engine�oil�cooler.�The�air
ducting�for�the�brake�system�has�been�adapted�on�the�F97/F98,�featuring�new�air�ducts�between�the
bumper�panel�and�the�inner�wheel�arch�liner.
In�order�to�achieve�an�additional�optimization�in�terms�of�reducing�the�lift�on�the�F97/F98,�M-specific
air�guides�in�front�of�the�front�wheels�that�differ�geometrically�from�the�G01/G02�have�been�developed
in�a�wind�tunnel.
The�center�underbody�trim�panel�has�been�adapted�specifically�for�the�M�model�to�achieve�optimum
airflow�over�the�protruding�cooling�fins�of�the�aluminum�transmission�sump�(BMW�AG�base�model:
plastic�oil�sump).
Thermal�protection
• Additional�heat�insulation�on�the�right�engine�subframe�(turbocharger)
• Exhaust�system�heat�insulation�as�a�new�part�to�the�right�of�the�automatic�transmission
• Additional�exhaust�system�heat�insulation�for�fuel�tank�and�the�front�prop�shaft�universal�joint
• Additional�exhaust�system�heat�insulation�above�the�rear�silencer.