Overview
This system measures the rolling resistance of each tire accurately in accordance with ISO 28580:2018. In addition to the simultaneous measurement of tire loss resistance and rolling resistance coefficient for each drive by mode operation (JC08, WLTC), coasting test, constant acceleration/deceleration test and transient mode test are able to be performed.
Furthermore, the impact of tyre loss due to temperature changes in rollers and tyres can be verified by adding options.
Conforming standards: ISO 28580: 2018（MOD), JASOE015
Measurement system
Driving resistance control with the motor for roller (same as the chassis dynamometer)
Speed control while driving with the motor for roller
Mode operation while driving and controlling the speed with the motor for tire
Calculation of rolling resistance and loss work from two shaft torque detectors
System Configuration
| Roller | Diameter | 2,000 mm |
|---|---|---|
| Surface | Smooth | |
| Width | 400 mm | |
| Weight | 9,000 N | |
| Measurement accuracy | Tire weight | ±10 N or ±0.5% of FS, whichever is greater. |
| Air pressure | ±1 kPa | |
| Shaft force | ±0.05 % FS | |
| Input torque | ±0.1% FS | |
| Distance | ±0.5 mm | |
| Temperature | ±(0.15 + 0.002t) ℃ | |
| Surface speed | ±0.1 km/h | |
| Time | ±0.01 s | |
| Angular velocity | ±0.1% | |
| Environmental temperature | Standard | 23±1 ℃ |
*Please contact us for the detailed specification.
Measurement data examples
Measurement of rolling resistance coefficient in stationary test
Rotate tire with constant speed at 80 km/h and measure the rolling resistance coefficient from its driving torque. In a same manner, measure at any rotational speed.
Rolling resistance coefficient measurement in coasting test
Measure rolling resistance coefficient in coasting test same as the chassis dynamometer.
Measurement point: 80, 60, 40, 20 km/h
Weight condition: 3826 N
Warming up condition: 30 minutes at 60 km/h before the test
Calculation of running resistance
Applicable standard
JIS D 4234: 2009(JATMA), ISO 28580: 2009(MOD), JASOE015
Revised:2026/1/30
