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ZF Friedrichshafen AG

Car Powertrain Technology Division - ZF’s 9-speed Automatic Transmission

ZF has introduced a 9 speed automatic transmission for transverse mounted front wheel drive vehicles with a focus on ensuring that the engine is always in optimum operating range. The unique packaging requirements of the transmission within the vehicle, due to space limitations, was accomplished through the innovative use of nesting gears combined with the clever utilization of dog clutches. The outcome: less weight (due to the elimination of one gear set), better torque, improved driving dynamics all resulting in a significant improvement in fuel consumption of between 10% and 16% as compared to current 6 speed transmissions.