RDE (Real Driving Emissions) Testing Services

We provide RDE (Real Driving Emissions) Testing Services that package everything from installing measuring devices to route planning, measurement, and data analysis.

RDE Testing Services

  • We provide total support for all processes required for emissions measurements while driving on the road, such as PEMS (Portable Emission Measurement System) installation on vehicles, planning and verification of driving routes, and measurement and analysis of the data.
  • Our experimental engineers manage everything from responding to test requests to explaining the results.
  • They design the driving route based on map information, and actually drive the test route to verify it in advance in order to confirm the influence on emissions from actual road conditions.
  • The same driver operates the emissions measurement test with the chassis dynamometer and the RDE testing.

RDE Testing Service Process

【Preparation】Selection of Test Routes for RDE Testing

The driving route is determined by following MLIT/MOE regulations.

It is also possible to test on a closed course (test course)

*Experimenters (drivers) are all skilled and hold a special test course driving license.

  • We first plan a route based on map information. (Testing available nationwide)
  • We drive the test route to verify it in advance in order to confirm the influence on emissions from actual road conditions.
Speed distance ratio 3 criteria
Speed tests 5 criteria
Acceleration tests 6 criteria
Time, Altitude, Gradient 3 criteria
Cold conditions 3 criteria

【Preparation】Installation of Measurement Equipment onto the Vehicle

Jig design for mounting

  • PEMS
    • Exhaust gas measurement / Nitrogen oxides (NOx), Carbon monoxide (CO), Carbon dioxide (CO2), Total hydrocarbons (THC)
    • Particle number (PN) measurement of particulate matter
  • Battery
  • Reference gas
  • Anti-vibration table is recommended by the measuring instrument manufacturer

Processing work for measurement preparation

  • Sampling probe mounted
  • Exhaust flow measurement preparation: Pitot tube installation
  • Holes are drilled into the car for installation

【Measurement】Real Driving Testing

Features of a Driving Test

Both the road driving test and the test on the chassis dynamo installed in the test room are driven by the same skilled driver.
As a result, it is possible to acquire highly accurate comparative data that eliminates variations due to the driver.

Original Real-Time Analysis Software

  • You can understand the driving condition in real time.
  • We can achieve a high success rate because the driving method can be adjusted according to the situation.
  • Since it is software developed in-house, it can be freely customized according to the test.

Original Real-Time Analysis Software

  • You can understand the driving condition in real time.
  • We can achieve a high success rate because the driving method can be adjusted according to the situation.
  • Since it is software developed in-house, it can be freely customized according to the test.

【Measurement】Chassis Dynamometer Testing

Chassis Dynamo (Our Own Equipment)

  • The same driver will carry out the chassis dynamo test and the RDE test to reduce the influence of different drivers on the test results.

PEMS (Our Own Equipment)

  • Correlation of measurement results between the stationary exhaust gas analyzer and PEMS (Portable Emission Measurement System) can be confirmed.