It is shown though the result that the problem of reverse pressure difference is solved by adopting the Venturi tube with appropriate proportion between intake and throat. Adopting appropriate EGR ratio at different conditions can not only guarantee diesel engine's performance but also decrease the amount of NO.

研究表明欧美第一区在线，采用帶有合適的進(jìn)、喉口比例尺寸的文丘里管解決了進(jìn)排壓逆差問題国产精品国产三级传区网站，不同工況下采用合適的EGR率保障了柴油機(jī)的工作性能无码毛片一区,二区,…，并有效降低了NO的排放。

According to analysis the speciality of HR engine block and compare machine process from difference maker,this paper decides the technology specification of the machine line and give the machine process,it introduces how choose machine equipment specification and what new technology are used.

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Then, the compression engine box body is to bear the weight of this pressure and links every component and part, Require that the box body is able to bear pressure therefore, and box body comparing with other component and part hermetic sealing, before work out when processing handicraft , ask accuracy and form and location common difference etc.

壓縮機(jī)箱體則是承載這個壓力和連接各零部件，因此要求箱體能夠承受壓力精品欧美日韩一区二区麻豆91，以及箱體與其他零部件的密封性欧美一级aa黄片系列精品99，在編制加工工藝時，要考慮到各個接觸面的各項精度以及形狀與位置公差等色哟脚在线观看视频。