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Tire Rolling Resistance Test System
WEB-TYREROLL

This system complies with ISO 28580:2018 and can accurately measure the rolling resistance of various individual tires. In addition to simultaneously measuring tire loss resistance and rolling resistance coefficient for each run using mode operation (JC08, WLTC), it can also perform bench coasting tests, constant acceleration/deceleration tests, and transient mode tests. Furthermore, with optional additions, it can verify the effects of temperature changes in rollers and tires on tire loss. Applicable standards: ISO 28580:2018 (MOD), JASOE015

System Configurations

  • Features

  • Roller motors allow for control of running resistance (similar to a chassis dynamometer).

  • Driven by a motor for rollers, speed control is possible.

  • Driven by a motor for the tires, speed control is performed, and mode operation is possible.

  • Rolling resistance and work loss can be calculated from two axial torque sensors.

  • The pressing force can be varied using an air cylinder to follow changes in speed.

Specification

Laura
diameter
2,000 mm
surface
smooth
Width
400 mm
load
  
9,000 N
Measurement accuracy
Tire load
 Whichever is greater: ±10 N or ±0.5% FS
air pressure
±1 kPa
Axial force
±0.05% FS
Input Torque
±0.1%FS
distance
±0.5mm
temperature
±0.15 + 0.002t℃
surface speed
±0.1 km/h
time
±0.01s
angular velocity
±0.1%
environmental temperature
standard
23±1℃

*Please contact us for detailed specifications.

Case Studies

Measurement of rolling resistance coefficient by steady-state testing

The tire is rotated at a constant speed of 80 km/h, and the rolling resistance coefficient is measured from the driving torque. Similar measurements can be taken at any desired rotational speed.

  • Measurement of rolling resistance coefficient by steady-state testing

Measurement of rolling resistance coefficient by coasting test

The rolling resistance coefficient can be measured using the coasting method, similar to how it is measured on a chassis dynamometer.

Measurement points: 80, 60, 40, 20 km/h
Load condition: 3826 N
Warm-up conditions: 60 km/h for 30 minutes before the test.

  • Measurement of rolling resistance coefficient by coasting test

Calculation of rolling resistance

  • Calculation of Rolling Resistance No. 1
  • Calculation of Rolling Resistance No. 2
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