Fuel pump (unloading pump, high viscosity pump, asphalt pump) gear wear and tear parts mainly is the tooth meshing, involute face and gear ends plane.
燃油泵(卸油泵，高粘度泵，沥青泵)齿轮的磨损部位主要是齿的啮合、渐开线工作面和齿轮两端平面。
After improvement, the fuel consumption has been reduced, the performance at low load and the life of main parts have been improved, furthermore, the high viscosity heavy fuel can be used.
通过这些改进降低了燃油消耗率，并且能够燃烧高粘度重油，改善了低负荷性能，提高了主要零件的使用寿命。
It's the most advanced heavy-duty engine oil yet developed by Shell and provides high protection even at the low-viscosity levels required for optimal fuel economy.
这是最先进的重型发动机油尚未开发的壳牌公司，并提供高度保护，甚至在低粘度所需的水平最佳的燃油经济性。
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