Volvo Truck Iron Knight catapulted his 4.5 t weight in just 4.6 seconds from 0 to 100 km/h. And for 1,000 m the truck needs just 21,29 seconds. Top speed: 276 km/h. What makes the truck so quick?
There are two records that in northern Sweden last week broke the Volvo Truck Iron Knight. On the closed test track at a former airfield, the “Iron Knight” and his pilot Boije Ovebrink new best time both the 500 m and the 1,000 m. For 1000 m, they needed 21,29 seconds at an average speed of 169 km/h. The truck made the 500-meter distance in 13.71 seconds at an average of 131 km/h.
Driver’s cab of the Iron Knight is particularly aerodynamic
While the Super truck according to the regulations of the Automobile Federation FIA had to two times each travel the distances. The average speeds were then calculated from two routes. The truck reached 276 km/h as maximum speed. Thus, the 65 year old pilot Boije Ovebrink, who more than 30 years experience in the car and truck racing who has broken his own record.
Ovebrink set 2012 the with the truck “Mean Green” by Volvo, at the time with an average speed of 236 km/h on the 1,000 meter distance.
Volvo engineers have built in manual work and yet once significantly changed the truck for the new record attempt. The Iron Knight has 1,000 kg lighter and “the driver’s cab is made of fiberglass and designed to reduce air resistance to an absolute minimum,” weighs now 4.5 t. explains Nigel Atterbury, Chief Designer at Volvo trucks.
The sides have large air ducts which supply the motor with cooling air. Also slimmed down the electrics and electronics system and reprogrammed the software.
Torque is preserved during gear changes
The centrally placed motor, a 12.8 liters large D13 six cylinder, has 600 horsepower more than its predecessor. Water-cooled charge air cooler and four turbochargers bring the six-cylinder on 2,400 Horsepower and 6,000 nm of torque. Last but not least this is also the hidden strength of the racing trucks.
The I-shift dual clutch transmission incorporates dual clutch, the Volvo in the FH series-produced models, got an adjustment and has been reinforced. The transmission keeps the torque to the rear wheel with gear changes, because while the vehicle is in a gang, the driver can choose to have the next gear.
“As a result of the Iron Knight can accelerate, without losing vital time for gear changes”, explains Niklas Öberg, test engineer at Volvo trucks. Volvo was the first manufacturer, had adapted this seamless shifting, there has already been for cars, also for large trucks in 2014.
But Volvo trucks are not only fast on the road. Together with Siemens, Volvo is already testing hybrid trucks on the highway.