Vario Transmission The Vario transmission was first developed in the 1970s, but due to excessive noise of the hydraulic portion of the transmission and lack of engineering production methods that had not yet been invented, it was not seen on a production tractor until 1995, when Fendt launched the revolutionary Fendt 926 Vario. This was the first ever stepless transmission to be launched in the tractor market, and is patented to be the only truly stepless transmission when it was first developed. Competitors were unable to make a transmission as advanced as a Fendt Vario at the time with a
hydrostatic transmission as the only real competition, however, these soon fell out of favor. Since its initial announcement and release, manufacturers such as
ZF,
John Deere and
CNH group have also developed their own versions of this type of transmission. Fendt's
infinitely variable transmission (IVT) differs from a
continuously variable transmission (CVT) as an IVT can be traveling at 0.0 km/h whilst the transmission is engaged and not in neutral. The IVT/CVT gearbox is widely regarded as one of the most fuel-efficient gearbox types on the agricultural market prompting nearly all other major manufacturers to develop their own system as it is able to combine more precise ground speed selection by the user with an increase in fuel-efficiency. Variations can be found on other AGCO tractor brands such as
Massey Ferguson. The gearbox may be the same however the individual brands have different controls/ joysticks and may have different ECU software. The first generation of Vario transmissions were named for their primary inventor, Hans Marschall and the different classes of the transmission were labeled in honor of him using the format of "MLxxx" where the x characters would indicate how many
kilowatts of power could be transferred through the transmission. (i.e., the original Fendt 926 Favorite Vario featured an ML200 Vario Transmission which could transfer 200 kW or 268 maximum
horsepower through it)
Tractor Management System In 2004, following the paradigm-shift of the Vario transmission, the next large innovation that Fendt delivered was the ability for the tractor gearbox/transmission and the engine to communicate with one another based on parameters set by the operator that allowed the machine to command only as much engine power as needed to complete the commanded task; a concept that was branded as Vario TMS or Tractor Management System.
VarioGrip Fendt pioneered the idea and implementation of the first tire pressure monitoring and control system for use on an agricultural tractor. It was developed in the late 1980s and first released in an open-loop feedback system offering in 2015 on the Fendt 800, 900, and 1000 Vario Series tractors.
Fendt iD Low Engine Speed Concept Beginning with the 1000 series tractor in 2015, Fendt created and implemented the use of the low engine speed concept which was also a world-first for any size agricultural tractor. While most
diesel tractor engines operate at a rated engine RPM of 2000–2300, Fendt engineered the machine to work at its optimum between 1100 and 1500 RPM with a max RPM of 1730. The results from this innovation resulted in lower fluid consumption, longer service intervals, and longer overall machine life due to less component wear. With the success of Fendt iD on the 1000 series, it is also now utilized on the 900 Vario Gen 6 and newer series, the 900 Vario MT series, the 1100 Vario MT series, and the 700 Vario Gen 7 and newer series.
The Trisix 2007 Fendt released a prototype of a new concept tractor at
Agritechnica 2007, in
Hanover, Germany, called the TriSix nicknamed "Mobydick" and boasting and six-wheel drive. The front axle and the rearmost steer the tractor, and as the speed of the tractor increases, the amount of steering input on the rear axle reduces to make it safer. It also completely locks out when in transport mode and with some implements. To handle the horsepower the Trisix has two of the company's trademark Vario transmissions, which push the machine up to a top speed of 60 km/h (38 mph). Fendt has not confirmed the production of this machine, and it remains in the prototype stage. The axles and backbone tube are from
Tatra 815 series trucks and the 6x6 Tatra-based tractor concept was patented in 1997 by
Farma Josef Dvorak of
Tábor, Czech Republic. == Appearances in media ==