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Exhaust smoke emissions
On November 7, 2018, the Ministry of Ecology and Environment (MEE) issued China’s first exhaust smoke emissions standard, GB 36886-2018. It set limits for exhaust smoke emissions from all domestically produced and imported non-road machinery.
New non-road machinery diesel engines, manufactured domestically or imported, shall pass the smoke intensity inspection test. Under this test, an engine must pass the Ringelmann test before the smoke opacity test is conducted. The MEE sets three types of limitations for non-road machinery:
    •Type I: Non-road machinery meets the China I or II non-road machinery exhaust emissions standard, GB 20891-2007
    •Type II: Non-road machinery meets the China III or IV non-road machinery exhaust emissions standard, GB 20891-2014 and GB 20891-201
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Exhaust smoke emissions