VT-4/B2 Modular Dynamometer

Two axle dyno, equipped with two eddy current brakes with maximal braking torque 2000 Nm. It allows the measurement of power and torque in both inertial and braked modes, measurement of power on wheels in constant rpm mode and road-mode testing of the car. The dyno is normally equipped with a mechanical system of axle synchronisation. A possibility of a further upgrade to the VT-4/B4 version. The dyno is offered in a standalone version or pit version.

VT-4/B2 Modular Dynamometer

Technical data

Type braked, synchronized [1]
Size (L x W) [mm] 5500 x 3800 [2]
Max/min wheelbase [mm] 3300/2300
Max/min track [mm] 2200/900
Minimum tyre diameter [mm] 400
Max weight per axle [kg] 3000
Number of axles 2
Brakes 2 x eddy current brake
Vmax [km/h] 300
Test mode inertial, dynamic load, road test, constant RPM
Pmax [HP] - internal mode 450 [3]
Pmax [HP] - dynamic load and road test modes 1250 [3]
Pmax [HP] - constant RPM mode (power on wheels) 540 [4]
Power measurement accuracy [%] 0.1
Power measurement accuracy, braked mode [%] 1
Power supply (without cooling and exhaust fans) min. AC 400V / 40A
Required compressed air min. 6 bar
Basic composition in-pit / surface-mounted
Additional accessories turbo pressure sensor, AFR sensor, cooling fan, exhaust fan, exhaust pipes, OBD/CAN interface for live data acquisition
[1] Mechanical connection between front and rear axles (synchronization) gives you an opportunity to measure modern AWD cars equipped with high tech systems controlling torque distribution between front and rear wheels, also 2WD cars equipped with advanced traction control system in which all the wheels must rotate in equal speed (otherwise car ECU will not be able to measure the car).
[2] 4600x3800 in surface-mounted version.
[3] Maximum power depends on engine torque characteristic and engine rotations. Cars with higher engine power can be measured with lower accuracy.
[4] Maximum power depends on eddy current brake rotations.