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随着柴油机功率的增大,热负荷和机械负荷相应增加,柴油机零件的结构也产生了较大的变化。机架是柴油机的主要部件,它承受着较高的燃气作用力、惯性力和倾覆力矩等作用,若设计不当,将使曲轴应力增大,其本身也会产生裂缝,严重者可直接影响柴油机的正常运转。对于设计大功率柴油机来说,机架的应力和变形已成为一个急待研究的问题。
As the power of diesel engine increases, the heat load and mechanical load increase correspondingly, and the structure of diesel engine parts also changes a lot. The frame is the main component of the diesel engine. It withstands high gas forces, inertial forces and overturning moments. If improperly designed, it will increase the stress on the crankshaft, which may also cause cracks in itself. In severe cases, it may directly affect the diesel engine The normal operation. For the design of high-power diesel engine, the stress and deformation of the rack have become an urgent problem to be studied.