ZF launches new transmission system for heavy trucks
By admin October 13, 2012 7:11 am IST
German powertrain specialist ZF introduced its new automatic transmission system for heavy trucks. With a completely new basic transmission and a modular concept, TraXon meets the demand of the commercial vehicle market for a versatile solution for a broad range of applications.
The innovative transmission offers more torque, without compromises with regard to the power-to-weight ratio; it has a higher gear spread while the noise quality was improved; and, depending on the application, it can not only be driven by a dry clutch but also by a hybrid module, dual-clutch module, or a torque converter clutch. Furthermore, it can be combined with an engine-dependent PTO. For the new transmission, ZF developed the revolutionary PreVision GPSshifting strategy which works in an anticipatory and especially fuel-saving way thanks to GPS connection and an interface to navigation data.
It is this space-saving design in combination with the newly designed gearsets that turns the TraXon into a benchmark in terms of the power-to-weight ratio. The new ZF transmission can transmit torques considerably above 3,000 newton metres and is therefore also attractive for markets where trucks with a gross vehicle weight of 60 tonnes are used. TraXon can be obtained with 12 or 16 speeds – both are available as Direct Drive or Overdrive versions – the latter with a particularly long ratio of the highest speed. All versions of the TraXon basic transmission have a very high transmission spacing, enabling the driver to manoeuvre the truck in a balanced and comfortable way without the transmission becoming more prone to wear, e.g. due to excessive load on the clutch.
ZF development engineers managed to considerably reduce the noise development of the TraXon compared to the AS Tronic by an average of 6 dB by introducing a new gearing design, innovations for the transmission housing, and by integrating an anti-rattling damper.
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