Again the compact size of this device, the user-friendly logic and the versatility of its software, as well as the accuracy of assessments make Dynorace the ideal machine for servicing both workshops willing to integrate a diagnostic graph and tuning/developing centers involved in motorsport.

The possibility to recreate working defects/problems occurred on the road and the repeatability of the tests performed (which involves the stability of the measured data) have always been pursued as primary target in the development of the device. The consequence of this approach is the continuous improvement of our range of dynamometers in the past few years which also means the highest trustworthiness of the results acquired during the tests.

The use of eddy current brakes (theoretical braking power over 500 Hp for each axle) allows dynamic tests like:

  • Test of duration
  • Regenerative procedure of  diesel particulate filter
  • Test of  fuel consumption
  • Research and development on vehicles
  • Test of vehicle’s working and quality
The mechanical reliability of the dynamometer is determined by the use of high quality parts, laser technology and lower tolerance in the production process. This method - although remarkably expensive - allows to offer a superior quality and a more performing range of dynamometers. Therefore, the mechanical maintenance of the dyno is reduced, less frequent and simplified. This is valid also for the hydraulic system offered in the HLS® version: as a term of comparison, dynamometers with belts to transfer the traction between front/rear axle require a careful technical monitoring every 40 hours of use and frequent inspections to verify the correct set-up.

The version supplied with HLS® system (Hydraulic Link System) allow the hydraulic link between front/rear axles to determine the same revolution speed: this is why tests on vehicles, that could not be dynoed otherwise (because of their four wheel drive with electronic/mechanical system distributing engine torque between front/rear axles in a non-proportional way), can be safely carried out with HLS® system. This feature therefore constrains electronic systems like traction, srtability and braking control so making the test possible. 

DYNORACE is the only dynamometer with the possibility to link or disconnect front/rear axles thanks to this HLS® system, in case of vehicles that do not require this link or when this link can be even dangerous. The choice of the hydraulic system rather than toothed belts or driving shafts was preferred to guarantee maximum safety during tests with high torque and high revolution of the rollers. 

This also allows to use rollers with smaller diameter so having a more compact size of the whole dyno, that can anyway be adapted to the vehicle being tested thanks to a motorized reducer. 
Moreover, all dynamometers of the DYNORACE line are mechanically engineered to support max 2.500 kg per axle and are equipped with a blocking and lifting system of the rollers in order to make this operation easier and again, safer.

Finally, Dynorace line is accessoried by items that can better support or complete its tests. The electric and electronic part managing the working of the dyno is common to all versions (a panel next to the dynamometer), while the software managing is carried out through a Personal Computer. 

The data acquired can be integrated by additional parameters made available by the analog acquisition system and a kit to assess the wide band oxygen value.

Lastly, the centrifugal fan is important to avoid the increase of temperature of the intake air and therefore overheating of the engine. This fan can be connected to an inverter to link the air speed to the one of the vehicle being tested, so to better simulate road conditions.

TECHNICAL SPECIFICATIONS DF4IS
(inertial)
DF4FS
(braked)
DF4FSHLS
(braked)
DIMENSIONS
Dyno dimension (mm) 3190x4120x400 3190x4120x400 3190x4120x400
Roller width (mm) 650 650 650
Distance between rollers (mm) 550 550 550
Roler diameter (mm)
318 318 318
Carriageway (mm) 850-2.100 850-2.100 850-2.100
Wheelbase (mm) 2.000-3.040 2.000-3.040 2.000-3.040
Lifting and blocking pneumatic pneumatic pneumatic
Weight (kg) 2.700 2.300 2.450
PERFORMANCE
Max speed (km/h) 300 300 300
Max power at wheel (kW) per axle 400 400 400
Max theoretical torque at wheel per axle (kgm) - 160 160
max tractive force (kN) - 15 15
Max revolution (rpm) 5.000 5.000 5.000
Max weight per axle (kg) 2.500 2.500 2.500
Wheel dimension (inches) 13-23 13-23 13-23
 
Axle link
// // hydraulic
DATA MANAGEMENT
Roller rev. measurement (RPM/min) 6.000 (encoder) 6.000 (encoder) 6.000 (encoder)
Power measurement (N) - 5.000 strain gauge 5.000 strain gauge
Brake management (vcc) - 192V / PWM 12 bit 192V / PWM 12 bit
Exhaust gas temperature (K) 1.000 1.000 1.000
Oil temperature (°C) / H2O (°C) 0 - 150 0 - 150 0 - 150
Boost pressure sensor (bar) -1.00 + 3.00 -1.00 + 3.00 -1.00 + 3.00
Oxygen sensor (AFR-λ-Custom) Si Si Si

Measurement data are collected and standardized through an integrated barometric unit in accordance with the following regulations:: DIN 70020, EGW 80/1269, ISO 1585, SAE J1349, JIS D1001

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