按装汽车省油器之后会减低多少排放废气量？

How much reduction can the booster achieve in exhaust emission?

youdao

处理废气量大，可同时处理多个污染源所排放的废气。

It can reduce more air waste generated by various pollution sources than other exhaust system can dispose simultaneously.

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结果表明，通过调节排气门关闭正时，适当增大缸内残余废气量，可显著改善起动过程初始着火循环的着火燃烧性能和提高起动过程缸内燃烧的稳定性。

The results show that a proper increase of residual gas fraction could promote ignition and combustion stability of first firing cycle significantly during cold start.

youdao

Clearly, if I did nothing more, but I took every car, doubled its fuel economy, its emissions would go to 50% of what they are now, no other changes being made.

显然，如果我什么也不做，但是我把没量车的汽油价加倍，汽车废气排放量就会是现在的一半了，别的不会有什么改变。

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