滑油冷却器的作用是冷却润滑油，保持油温在正常工作范围之内。在大功率的强化发动机上，由于热负荷大，必须装用滑油冷却器。发动机运转时，由于机油粘度随温度升高而变稀，降低了润滑能力。因此，有些发动机装用了滑油冷却器，其作用是降低机油温度，保持润滑油一定的粘度。滑油冷却器布置在润滑系循环油路。
通过对新型混合管束式双流程滑油冷却器的大量实验研究，发现其具有很强的换热能力。
Lots of experimental research has been done on the new double-flow lubricating-oil cooler which has mixed tube bundles, and it is found that such cooler has very strong heat transfer ability.
在实验研究的基础上，针对试验过程中发现的问题，本文对新型滑油冷却器结构优化及进一步研究提出了建议。
And, based on experiments research, aiming at the problems to the new oil cooler in experiment, some Suggestions are given for structure optimization of the new oil cooler and further developing.
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