Products / Tractor range / T Series tractors / Engine

Reliable and extremely strong AGCO Sisu Power engines

All T Series tractors are powered by AGCO Sisu Power common-rail engines. AGCO Sisu Power tractor engines are off-road engines that are designed for use with demanding implements. This can be seen in their sturdy structure, durability, reliability and extremely strong torque.

Low idle

A new Valtra innovation is low idle for Common Rail engines. The ordinary idling speed is 850 rpm. When the tractor is parked and the hand brake engaged, the engine speed drops to a pleasantly quiet 650 rpm further reducing fuel consumption. When starting driving again the control lever must be lifted to N position, and the idling speed is immediately increased to 850 rpm to make use of the high start-up torque of the engine.

Engine Power and Torque

Ecopower

The EcoPower function lowers the maximum engine speed by approx. 400 rpm. This reduces fuel consumption by up to 10 percent. At the same time, the average piston speed is reduced by 20 percent, which also extends the life of the engine by around 20 percent.

Lower engine speeds also lower engine noise by several decibels, which in turn improves driving comfort. Another new property in EcoPower is the chance to switch between the efficient Eco Mode and the standard Power mode.

Two tractors in one

EcoPower has many new exciting features. Two driving modes can be selected:

Eco mode with genuine EcoPower features: 

  • Rated speed 1800 rpm
  • Fuel savings up to 10 %
  • Lower noise level
  • Lower piston speed, increased engine life
  • Very high torque, even at 1000 rpm
  • Wide, constant torque range

Eco mode is recommended:

  • For maximising fuel efficiency
  • For soil preparation
  • For all utility work

Power mode offering approximately the same power but including transport boost

  • Rated speed 2200 rpm
  • Transport boost 11 hp (8 kW)
  • Top speed 50 km/h or 40 km/h EcoSpeed depending on specification
  • High PTO power

Power mode is recommended:

  • For heavy PTO work
  • For high average speeds in hilly conditions
  • For high hydraulic output

 

Cruise control

Cruise control allows the driver to set the desired driving speed or PTO speed. The pre-set speed is maintained automatically regardless of changes in load.

When turning in the headland or stopping work, the speed can be temporarily be returned to idle or other pre-set speed at the push of a button. The working speed is then regained automatically by pushing the button again.

Cruise control makes daily work simpler and faster. The quality and productivity of work are also improved.

Common-rail engines

In common-rail engines the fuel can be delivered in up to five stages during a single ignition. The electronic engine management can analyse and adjust the amount of fuel needed by the engine over 100 times per second. The multi-stage fuel injection plays a major role in lowering emissions. At the same time, optimal fuel efficiency can be maintained.

Advantages:

  • Engine reacts quickly to changes in load
  • High fuel injection pressure, precise fuel injection timing and efficient intercooling help manage emissions
  • Exceed Tier III emissions standards
  • Strong torque achieved at low rpm. Torque remains high even if engine speed drops during work, making work efficient and improving fuel efficiency
  • Basic construction of AGCO Sisu Power engines offers long life: 
    • intercooler 
    • wet cylinder liners, centrally supported
      • reduces cylinder liner vibration
      • minimises wear on cylinder liners and pistons
      • low oil consumption 
    • fuel system located on cold side of engine
    • fuel filters can be easily changed without tools and without leaking fuel.
    • easy access to maintenance components
  • Optimal ignition thanks to common-rail preinjection
    • lower noise levels
    • new and pleasant engine sound
  • Four-valve-per-cylinder technology improves fuel flow through cylinders and reduces heat load around cylinders.

Transport boost

Models with Common Rail fuel injection offer extra power boost for
transport driving, which enables efficient transports. The power increase is 5-6 percent at field speeds. Transport boost offers extra power in gears H2, H3 and H4. The power bulge is also available in transport boost mode.

Permatorque

SisuDiesel engines feature Permatorque, which offers a torque reserve (A) from the rated rpm to the rpm of the maximum torque. In the T Series the maximum torque is achieved at 1500 rpm (EcoPower 1100 rpm). Permatorque (B) means that the torque remains constant until 1000 rpm. High torque at low rpm (C) enables a smooth start up during PTO work and moving off with heavy loads.

Power bulge

Power bulge means that the engine delivers the maximum power at lower
rpm than the rated speed. T Series CR engines have a rated speed of 2200 rpm, but the maximum power is achieved at 2000 rpm. The power bulge is approximately 3-4 hp.

Benefits
• Improved fuel efficiency
• Reduced noise levels
• Less downshifting
• Increased productivity

Special output with Sigma Power

Sigma Power models are ideal for use with implements that require a lot of PTO power, such as power harrows, rotary tillers, mulchers and shredders.

The T191, T182 and T202 models increase productivity with Valtra's unique Sigma Power, providing even more power when using PTO.