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R175型柴油机是国内小型单缸机的主要机型之一,我们对R175柴油机降低油耗做了一些研试工作,使油耗显著下降。 1.改进活塞环的结构:提高了整组环的气密性与刮油效能。 2.改善活塞与气缸套的配合:减少气缸套的变形(包括提高机体刚度,合理选择封水圈的大小、严格控制气缸套封水圈槽的尺寸,正确装配气缸套等)。 3.控制进排气门低于气缸盖平面的下陷深度:此下陷值的大小,不仅直接影响着压缩比的大小,同时还影响着主燃烧室形状与进排气过程,从而影响燃烧效率。经反复试验证实,
The R175 diesel engine is one of the main models of the domestic small-size single-cylinder engine. We did some research on reducing the fuel consumption of the R175 diesel engine, resulting in a significant drop in fuel consumption. 1. Improve the structure of the piston ring: improve the ring of the whole group of air tightness and scraping oil performance. 2. Improve the cooperation of piston and cylinder liner: Reduce the deformation of cylinder liner (including improving the rigidity of the body, choosing the size of the sealing ring reasonably, strictly controlling the size of the cylinder ring seal groove, correctly assembling the cylinder liner, etc.). 3. Control of intake and exhaust valve below the plane of the cylinder head sag depth: The size of the sag value, not only directly affects the size of the compression ratio, but also affect the main combustion chamber shape and intake and exhaust process, thus affecting the combustion efficiency. After repeated tests confirmed that,