摘要
通过在QM50QW和QS90二冲程摩托车上加装进气旋流器、催化器以及采取扫气道、排气口引入二次空气和活塞裙部钻排气回流孔等措施 。
By installing inlet air swirl generator, catalytic convertor and adopting secondary air injection to inlet port, exhaust port, and a exhaust gas recirculation hole in the piston skirt at two types of two stroke motorcycles\_QM50QW and QS90, the tailpipe emissions of the motorcycles were greatly decreased.\;
