Based on the 175F type swirlprechamber air cooling diesel engine, through redesigning cylinder head and piston etc. , new 175F type direct injection air cooling diesel engine is formed.

在175F涡流预燃室风冷柴油机的基础上更换气缸盖、活塞等零件，改成新的175F直喷式燃烧室风冷柴油机。

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To reduce emissions in existing combustors, fuel is premixed with a large amount of swirling air flow prior to injection into the combustor.

现行的燃烧室要想减少排放量，必须在燃料注入燃烧室之前就通过大量的空气流将燃料混合好。

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Summarized some important experience on designing injection mould of plastic air intake manifold.

总结出了在设计塑料进气歧管注塑模具时要注意的几个问题。

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Initial results were good, as the air injection almost immediately flattened the well's natural decline and later boosted production from 460 barrels a day to 650.

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