HORIBA, Ltd.'s Compact Emissions Measurement System MEXAcube has been certified by the Vehicle Certification Agency (VCA), the UK vehicle type approval authority, as an alternative analyzer under UN Regulation No. 168 (UNR168). UNR168 is an agreement regulation established by the United Nations (UN) for the approval of Real Driving Emission (RDE) tests for small passenger cars and commercial vehicles.
HORIBA has an on-board emissions measurement system, the OBS-ONE series, which uses the standard measurement principle specified in UNR168 as an analyzer. This certification recognizes that MEXAcube meets the requirements for an alternative analyzer with performance equal to or exceeding that of analyzers using the same principle, and it is now available for use in UNR168 certification tests conducted by VCA. Additionally, UNR168 is expected to be adopted as a measurement method for Euro 7*1.
HORIBA will continue to support our customers' certification tests while striving for further technological development and service enhancement.
About MEXAcube
MEXAcube is an engine exhaust gas measurement device that can be used under both laboratory conditions and on-board of vehicles, and can accurately measure nine different emission components, including ammonia (NH3), nitrous oxide (N2O), and formaldehyde (HCHO)*2, with a single device. It is equipped with HORIBA's proprietary infrared gas analysis technology, “IRLAM™*3,” developed in 2021, and offers high reliability that can withstand the harsh environmental fluctuations characteristic of RDE test.
Compared to our conventional motor exhaust gas analyzer (laboratory testing platform), the MEXA-ONE series, this environmentally friendly product reduces power consumption by approximately 80%*2 and is compatible with exhaust gases from carbon-neutral fuels such as hydrogen and ammonia, which contain high concentrations of moisture, contributing to the development of next-generation mobility, which is becoming increasingly diverse.
*1 Next European Union (EU) automotive emissions regulations (regulations for light vehicles such as passenger cars will begin at the end of November 2026, and regulations for heavy vehicles will begin at the end of May 2028).
*2 The measurable range and effects may vary depending on the method of use and conditions.
*3 Infrared Laser Absorption Modulation (IRLAM™). IRLAM™ is a registered trademark or trademark of HORIBA, Ltd. in Japan and other countries.
