The Future of Forestry

cPOWER – Higher performance and less fuel consumption

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High loads, continuously variable speeds, and therefore comfortable manoeuvring – the cPOWER power-split CVT technology combines these characteristics with improved fuel consumption of up to 30 percent (fig. 1). Being in series production for forwarders since more than two years now, the fully power-split, continuously variable transmission offers significant consumption benefits and productivity increases for the vehicle owner (fig. 2). It operates at low engine speeds, thus increasing efficiency and driver comfort in forestry equipment like forwarders and skidders even more. The gain in tractive power through the innovative transmission system is particularly beneficial for the user when driving on challenging terrain types, like steep slopes or soft ground.

The continuously variable transmissions clearly demonstrate their benefits in all ranges of the typical forestry machinery operating cycle, i.e., during transporting or loading.

In this process, the percentage of hydrostatic power is kept low whereby; an optimal degree of efficiency can be achieved.

Already in the start-up process there is a power split between mechanical and hydrostatic drive. The share of the mechanical power increases with the vehicle speed up to 100%. Even in very short loading cycles, the utility of the CVT technology becomes noticeable in reduced fuel consumption.

The application of an elaborate hydraulic transmission-control unit and transmission-integrated on-board electronic unit optimally completes driving functions. The application of these units is done with reference to sensitivity and driving comfort and realizes an aligned power management.

The cPOWER series deploys well-known and -proven construction kit modules and benefits from ZF competence in transmission and vehicle system engineering.

Main features:

• Continuously variable drive over the whole drive range forward and reverse

• Hydrostatic-mechanical power splitting in all driving ranges, including the frequently used range up to 10 km/h

• Reduction of diesel motor speed independent of driving speed

• No wear through heavy loads as there is no mechanical connection between engine and driveline

If cPOWER is combined with the ZF EFFICIENCY PACKAGE, the fuel savings increase by a further 5%.

The EFFICIENCY PACKAGE with cPOWER CVT technology ensures a reduction of emissions and fuel consumption while increasing efficiency and productivity, all without compromising on comfort.

As one of the worlds innovation and technology leaders, ZF is up to many more projects in the field of forestry, seeking also into electric drive solutions already today.

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Thanks to many years of experience, a unique customer approach and inhouse know-how, ZF provides customized solutions based on standard industrial gearbox designs. The company is not just a component supplier, but a partner. The partnership starts at the first contact, with an idea and a unique concept. Off course, it doesn’t stop after development or installation. Then the team is there for the partners with exceptional services.

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