ACCUDRIVE

Perhaps the most intelligent feature of the Challenger 1000 series is a powertrain unlike anything you’ve seen before. Simply put, the Accu-VT powertrain maximizes engine power at slow speeds. So you can pull the heaviest implements through the toughest conditions, with maximum torque and minimum fuel usage. The key is the tractor’s ability to drive both axles independently.

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MAN Engine

The six-cylinder, 12.4-liter displacement, MAN engine is ideal for heavy draft work, delivering an impressive 1,770 ft. lbs. of torque at 1,100 RPM. The Variable Turbine Geometry (VTG) turbocharger unleashes enormous power at low engine speed, so you can operate continuously in a maximum torque range while still delivering the lowest specific fuel consumption.

The high-torque-at-low-engine-speed principle ensures that all vehicle components—engine, transmission, fan and hydraulics—work precisely at maximum capacity, even at these low engine speeds. This delivers maximum performance and efficiency 365 days a year.

Accu-VT

The Accu-VT is engineered with a hydraulic pump and two hydraulic motors that enable ideal torque distribution, as needed, independently on the front and rear wheels. The rear axle is supplied with the hydrostatic mechanical power-splitting. The continuously variable operation allows for 65 feet per hour to 31 mph all in ONE range without any intervention by the operator, for easier operation.

Torque Vectoring: Amazingly Unconventional

Conventional four-wheel drives use a fixed-torque ratio between the front and rear axle. Not these tractors. Our unique Challenger Torque Vectoring enables a variable four-wheel drive, where torque is distributed over two transmission outputs, independently on both axles for tremendous pulling power. An intelligently controlled four-wheel drive clutch controls the torque so it can be shifted between the axles, according to need, with reduced frictional loss and wear. As speed increases, a clutch completely decouples the front axle drive at 15.5 mph, eliminating drag losses in the drive train and further increasing efficiency.

Pull-In-Turn Effect

Since there is no fixed-drive ratio with the variable four-wheel drive, the front-wheel drive can actively pull the tractor into a curve. This “pull-in-turn” effect reduces the turning circle in the field by up to 10%. For a high-horsepower tractor, you get nimble maneuverability in tight spots. Better yet, the usual front tire wear and tear caused by cornering on firm surfaces is reduced, so you don’t have to change expensive tires as often.