These new tests can ensure better durability of engine at high temperature and high levels of soot in the crankcase.

这些新试验能确保提高发动机在高温和高烟炱工况下的耐久性。

youdao

So flow in diesel engine affects dynamic performance, fuel economy, burning noise and emission formation etc, moreover directly affects reliability and durability of diesel engine.

因此，柴油机的流动不仅关系到柴油机的动力性、经济性、燃烧噪音和有害废气生成，而且还直接影响到柴油机的可靠性和耐久性。

youdao

It is an important factor that affects power, economy, durability, reliability and emission of an engine.

因此，它是影响发动机动力性、经济性、耐久性、可靠性以及排放的重要因素。

youdao

The testing required to demonstrate that a novel engine can meet stringent emissions standards and durability requirements is expensive and time consuming.

WSJ: How to Make Better Car Engines

Indeed, many aviation experts believe AVIC is having problems developing an indigenous engine for the J-11B with the same thrust and durability as the original Russian ones.

WSJ: China Clones, Sells Russian Fighter Jets