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Diesel
The following table shows the current emissions standards for new heavy-duty diesel vehicles registered in Japan. The same standards would usually be implemented for in-use vehicles one year after the enforcement year stated in the table.
Current emissions standards for new heavy-duty diesel vehicles
Test mode
Parameter
Enforcement year
Limit(1)
WHTC(2) and WHSC(3) (g/kWh)
Carbon monoxide
2016(4)
2.95 (2.22)
Non-methane hydrocarbons
0.23 (0.17)
Nitrogen oxides
0.7 (0.4)
Particulate matter
0.013 (0.010)
Note:
(1) The value outside the bracket indicates the maximum permissible limit for the vehicle, and the value inside the bracket indicates the average value for the vehicle type
(2) WHTC: World Harmon
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Diesel