After inspection, small power, lowexhaust pressure than the prototype of the new product prototype doesn't do type test.
检验合格后,比该样机功率小、排出压力低的新产品样机可不做型式检验。
2
Because of lowexhaust temperature of the urban bus engine, a diesel fueled burner was installed on the trap to regenerate thermally the ceramic element.
With the more and more strict exhaust emission regulation in the world, the lowexhaust emission has been the first object in the engine control technology.