New Holland goes variable!

By Jim Breen

Following the now-established common platform strategy, New Holland has introduced an additional range of tractors - complete with continuously variable transmissions. The new range is called the TVT series.

As you might have already guessed, these tractors are re-badged versions of Case-IH CVX and Steyr CVT models. In fact, practically all of the TVT's components are identical to those fitted to the Case-IH and Steyr equivalents.

Nevertheless, these tractors are new to New Holland - and all wear a striking blue livery. Taking their styling from the TS-A series, these tractors are claimed to ‘marry comfortable cabs with powerful, efficient engines and flexible transmissions'. The result, says New Holland, is ‘a whole new level of productivity'.

The TVT is reportedly straightforward to operate. The AutoController joystick is built into the adjustable right armrest and offers control of travel speed, the rear hitch, the remote valves and Headland Turn Sequencing (HTS).

New Holland is keen to point out that there are no complex operating menus to scroll through. The firm says that ‘everything has been designed with the operator in mind'.

Driving the TVT is a relatively simple affair; simply select your direction of travel using the AutoController shuttle and press either the ‘speed increase' button on the AutoController keypad or the accelerator pedal. The result, says New Holland, is seamless access to all operating speeds - from standstill to maximum.

You decide how fast you want to go and the Auto Command transmission does the rest, selecting the optimum engine speed and gear ratio to maintain the chosen travel speed, irrespective of the terrain. With creeper gears and a smooth shuttle action that facilitates progressive direction changes under speed and load, the Auto Command transmission gives the operator the choice of three speed ranges (0-max, 0-25kph and 0-14kph) and three driving modes (Drive mode, PTO mode and Manual mode).

Whatever work you're doing the TVT can adapt to the conditions. On the road it will automatically switch to Drive mode and will adjust the gear ratios and engine speed to minimise fuel consumption. For example, the TVT can achieve 40kph at just 1510rpm, while 50kph is available at 1890rpm.

In the field, when PTO speed is most important, PTO mode will maintain the engine speed and adjust the gear ratio to provide the desired travel speed. As a result, says New Holland, operating big balers, root crop harvesters and other PTO-dependent machinery has never been easier. The TVT simply ‘takes the hard work out of maximising productivity'.

The Auto Command transmission also comes with several safeguards. Active StopStart automatically holds the tractor stationary on gradients of up to 30 degrees - even with a 32-tonne load. An automatic parking lock and four-wheel braking with multiple wet discs complete an ‘impressive safety and convenience package'.

To further boost efficiency, the TVT's cab helps to minimise fatigue during a long day at the wheel - or so says New Holland. The ‘highly comfortable' cab is available with Comfort Ride suspension as well as a fully adjustable air-suspension seat.

Tilting and telescoping steering is standard, helping operators to find a comfortable driving position. Climate control is standard across the range, helping drivers keep cool in even the warmest summers. Interior noise levels have been minimised to a claimed figure of just 72dBA.

The instrument panel features a performance monitor. A second monitor is built into the right-hand A-pillar, ensuring that the information you need is easily accessible whatever task the tractor is undertaking.

The five models of the TVT series are powered by 6.6-litre, six-cylinder diesel engines.

All of these motors are sourced from Sisu. Turbo-charged, intercooled and featuring electronic fuel injection, these power units meet the latest Tier II emissions standards and offer anywhere from 137 to 192hp (ISO 14396) at a rated speed of 2,100rpm.

Designed to develop high torque levels, these engines are claimed to combine excellent fuel efficiency with longevity and low whole-life operating costs. As well as engine speed reduction for efficient headland turns and exhaust aspirated air filtration, which come as standard, the TVT can also be specified with a variable-pitch cooling fan.

This innovative technology matches the angle of the blades to the cooling effort required, ensuring that power - and fuel - is not wasted.

A closed centre hydraulic system incorporating a load-sensing pump with an output of 105 litres per minute is fitted to the TVT135, TVT145 and TVT155 as standard.

A MegaFlow pump (130 litres per minute) can be specified on these models as an extra-cost option but is fitted to the TVT170 and TVT190 as standard.

Up to five electronically-controlled proportional remote valves are available, all of which can be programmed into the Headland Turn Sequencing (HTS) system for automatic operation in conjunction with the tractor's hitch, differential locks, engine speed reduction and Auto PTO.

Maximum claimed lift at the rear linkage is 9,900kg. A front linkage with a capacity of 4,000kg, PTO and dedicated hydraulic services is also available.

The TVT is fitted with a four-speed independent rear PTO as standard. With the ability to be engaged under full load, the PTO is claimed to transmit the engine's power in a ‘highly efficient manner'. As well as the standard 540 and 1000 speeds the system offers economical 540E and 1000E settings, which can lead to fuel savings of up to 15% by providing the same PTO speeds but at just 65% of full power.

An ISO-compatible CAN BUS acts as the tractor's nervous system, providing an electronic communications pathway for operator instructions. The IntelliView ISO-BUS monitor is used to operate compatible equipment without the need for a separate control box. The TVT is expected to arrive in Ireland in the coming months. Prices have not yet been announced.