F97/F98�Complete�Vehicle
5.�Chassis�and�Suspension
65
5.4.3.�Integrated�actuation�(longitudinal�transverse�dynamics)
What�is�known�as�integrated�actuation�is�used�on�the�F97/F98.�The�integrated�actuation�in�the�M�DSC
comprises�the�DSC,�which�is�responsible�for�the�longitudinal�dynamics,�and�an�transverse�dynamics
management�control�unit�(QDM)�integrated�in�the�DSC�control�unit.�This�means�that�the�current
driver's�choice�is�distributed�to�the�appropriate�actuator�via�this�M�DSC�control�unit.�That�results�in�the
following�benefits�when�driving�the�F97/F98:
•
Excellent�traction,�especially�on�low�coefficients�of�friction
•
M-specific�agility�and�playfully�intuitive�control�of�the�vehicle
•
Superiority�in�every�day�use
•
Variable�functions�of�the�M�xDrive�are�possible,�depending�on�the�driver's�choice.
The�actuator�and�control�units�that�are�used�depending�on�the�driver's�choice�are:
•
M�Servotronic�(M�EPS)
•
M�VDP�Electronic�Damper�Control�(EDC)
•
M�regulated�M�rear�axle�differential�lock�(M�GHAS)
•
M�Dynamic�Stability�Control�(M�DSC)
•
M�transfer�box�(M�VTG)
•
Digital�Motor�Electronics�(DME)
The�transverse�dynamics�management�control�unit�QDM�is�not�a�separate�control�unit,�but�is
integrated�in�the�M�DSC.�It�therefore�cannot�be�replaced�separately.
