The fracture surface of a failed injection valve nut of diesel engine high pressure oil pump was investigated by visual and SEM.

对断裂的汽车柴油机高压出油阀紧座的宏观、微观断口及显微组织进行了研究。

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The noise of 4110Q diesel engine and its oil pan, flywheel cover, oil pump, valve chamber has been studied by the analysis system of B&K3560 in the normal Semi-anechoic chamber.

在标准半消声室，用B&K3560噪声测量分析系统对4110Q柴油机整机和油底壳、飞轮壳、喷油泵、摇臂罩等零部件的噪声进行了台架试验研究。

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Long service life of diesel engines in pump station determines the availability and maintainability of the engine, the pipeline safe operation as well as the realization of oil transport targets.

输油泵站柴油机组使用寿命的长短，不但影响着机组的利用率和维护保养费用，而且影响着管道的安全运行和输送任务的完成。

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This month's fall in inflation also reflects the sharp drop in the price of oil since the start of the year, which has meant falling petrol and diesel prices at the pump.

BBC: Wet weather helps Bank's inflation forecast