Gear Shifting - Porsche 2015 911 GT3 Cup Technical Manual

Powertrain
2
2.4.5
1 2
2.4.4
911 GT3 Cup (991)
54
Advantages of the system
• Gear shifting with both hands on the steering wheel
Automatic double de-clutching when down-shifting
•
• Focusing on braking and steering
Over-revving of the engine is less probably*
•
1
• Gearbox protection due to consistent gear shifting
*Blocking of the rear wheels during the braking process, may still allow over-revving.
Therefore avoid blocked wheels.
Connenction of the components
Valve block (2.4.3):
1 = Upshift
2 = Downshift
Shift cylinder (2.4.4):
1 = Upshift
2 = Downshift
2.4.1
Gear shifting is initiated by the paddles on the steering wheel. Different parameters
(e.g. velocity, rpm) are checked by means of the CAN bus to determine whether gear
shifting is possible. If this is the case, the pneumatic gear shift cylinder on the
gearbox is actuated. The gear shift drum turns, actuates the shift forks and engages
the desired gear.
MY 2015

Gear shifting

Version: 16.12.2014