汽油加生物添加剂对发动机废气排放的影响研究

通过发动机的台架试验，系统研究了将一种热带植物提取物作为添加剂加入到不同成分的汽油中对汽油机废气排放特性的影响．结果表明：对于93^#高清洁汽油和93^#成分汽油，除了未燃碳氢(HC)略有上升外，其他排放物如氮氧化物NOx、一氧化碳等有所减少，CO2排放有明显的改善．对于乙醇汽油，则HC和CO2略有上升．

The effects of bio-additives for gasoline on engine emissions

One type of bio-additives produced from tropic plant was added into different kinds of gasoline to investigate on the effect of the additive on engine emissions. On testing bench, the engine exhaust emission qualities with and without the additive in the fuels were compared and analyzed. The results showed that when the bio-additives were added into the super-clean gasoline and known components gasoline with the same 93# octane number, the engine emissions like carbon monoxide (CO) and nitric oxide (NO_x) were reduced, except unburned hydrocarbon (HC) increased slightly. Furthermore, the bio-additives also showed its remarkable characteristic in decreasing CO_2 emissions from gasoline engines. For the ethanol-gasoline, when adding the bio-additives into gasoline, the NO_x emissions remained the same level as conventional fuel, but HC and CO_2 were increased compared with the basic fuel.