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为提高使用中的6120Q柴油机性能描标,本文基于试验结果,提出了合理选用喷油泵凸轮工作段,换装结构合理的进气管和加装齿杆限位器等项改进措施。单独或综合采用这些措施均得到了显著的节油消烟效果。小范围的推广使用表明,这些措施易行而有效,可使汽车百吨公里油耗下降10%左右。文中还根据试验和计算结果,阐述了采用这些措施改善柴油机性能的机理。
In order to improve the performance of 6120Q diesel engines in service, this paper presents some reasonable measures such as reasonable selection of fuel injection pump cam working section, reasonable installation of intake manifold and installation of rack bar stopper. These measures alone or in combination have yielded significant fuel-saving and smoke-reducing effects. The promotion of small-scale use shows that these measures are easy and effective, which can reduce the fuel consumption per 100 kilometers of cars by about 10%. Based on the test and calculation results, the paper also expounds the mechanism of using these measures to improve the performance of diesel engine.