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Document Title Motor Cycle Definition and Regulation in Japan
Reference Number EPPR-02-09
Date
25 Apr 2013
Source(s) MLIT
Rulemaking Area(s) GTR No. 2 WMTC, UN R40 Motorcycle Emissions, and UN R47 Moped Emissions
Meeting(s)
Downloads
UNECE server .pdf format
Excerpts from session reports related to this document
EPPR | Session 2 | 25-26 Apr 2013

Document EPPR-02-04 and EPPR-02-09 were presented by Japan.

Document EPPR-02-04 provides an update of the Future Emission Reduction Measures for Motorcycles.

Document EPPR-02-09 explains how 2-, 3- and 4-wheel vehicles are categorized and tested for pollutant emissions in Japan.

Although the emission regulation of the 2006 Standard is applied, the amount of HC and CO emissions per distance travelled is still much higher than those of four‐wheeled vehicles.

Although the tailpipe emission standard has been implemented for the first time in 1998 and then reinforced in 2006, the relative contribution of evaporative gas within the emission has been higher.

It is important to control the amount of emission through monitoring the in‐use malfunction of emission reduction systems.

Considering the new EURO 4 becoming effective from 2016 and allowing adequate time for due technological development by motorcycle manufacturers, it is considered appropriate that application of new regulation in Japan occurs by the end of 2016. Japan explained that new regulation will apply by the end of 2016 for new type approvals by end of 2016, but the mandatory date for all new vehicles (‘current production’/registration) was not decided yet.

The motorcycle evaporative emission regulation is modeled after the CA Evaporative Emission Test, with the permissible limit of 2.0 g/test.

With regards to the reference to the regulation in California for evaporative emissions, TLR asked whether Japan meant the current or future regulation. Japan confirmed they meant current regulation.

For Japan the OBD equipment that monitors malfunctions caused by a short‐circuit or open electric circuits is now mandated. The implementation will occur by the end of 2016.

Regarding the OBD II that monitors malfunctions caused by deterioration of systems, components or units, it is difficult to determine the validity at this point and will be considered once the technical prospect is confirmed in the future.

It was explained that Japan would like EPPR to give priority to L3, evaporative emissions and OBD.

To a question by India and TRL, Japan explained that L7-vehicles would need to be tested in their country according to cycle for cars (JC07/WLTP).