The demands made of a modern, infinitely variable transmission are clear – high tractive force with a low hydrostatic involvement, maximum economy and, most importantly, user convenience. The transmission of the Agrotron TTV, which DEUTZ-FAHR developed in collaboration with ZF, has entered new dimensions in stepless transmission technology: Practical operating convenience, maximum efficiency and exemplary economy are the main characteristics.
High mechanical efficiency
A hitherto unsurpassed efficiency for a stepless transmission is possible due to the use of state-of-the-art technology. In each of the four working ranges the maximum driving power is mechanically transferred. The hydrostatic share is reduced to a minimum, ensuring maximum efficiency, without hydraulic losses at low speeds during fieldwork.
Intelligent transmission design
The stepless, performance-graded transmission of the Agrotron TTV comprises four main components – planetary transmission, the hydrostatic unit, the shuttle clutches and the electronic control unit. The high degree of efficiency is ensured due to the direct power flow from engine to the, planetary transmission, shuttle transmission, PTO and axle.
Infinitely variable from 0 to 50 km / h
The transmission comprises four planetary trains. The entire speed range is practically divided into the four working ranges by the planetary trains. The speed is steplessly varied within each working range by a hydrostatic unit. This gives you the possibility of infinitely variable travel speeds from 0-50 km / h, using the combination of the planetary trains and the hydrostatic unit. The planetary trains are inter-connected by maintenance-free long life multi-plate clutches.
Ideally coordinated
The hydrostatic variable displacement pump is directly driven, via the main shaft, from the engine. The variable displacement pump determines the oil flow rate and therefore, the speed of the fixed output motor. The less oil pumped, the lower the speed of the fixed output motor and therefore the lower the hydrostatic power share.