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从日本引进的AMR-370、AMR-600空压机上分别安装着6DB10P和DH21P柴油发动机,这些发动机具有转速高(1800转/分)、压缩比大(18∶1)、额定功率大(6DB10P为110马力,DH21P为165马力)等特点。以前这些发动机的配件都从日本进口,近几年来国家为了节约外汇开支,以国产件代替了进口件,可是在某些配件的质量上达不到进口件的性能指标,影响发动机的功率。如缸体与缸盖结合处的汽缸床的密封问题,一直没有较好地解决,我们在修理中按一定的顺序和规定的扭矩(6DB10P为27.5kg·
The AMR-370 and AMR-600 air compressors imported from Japan are equipped with 6DB10P and DH21P diesel engines. These engines have high speed (1800 rpm), high compression ratio (18:1), and high power rating (6DB10P). 110 horsepower, DH21P 165 horsepower). In the past, these engine parts were imported from Japan. In recent years, the state has replaced imported parts with homemade parts in order to save foreign exchange expenses. However, the quality of certain parts has not reached the performance specifications of imported parts and has affected the power of the engine. For example, the sealing of the cylinder bed at the joint between the cylinder block and the cylinder head has not been well solved. We have fixed the order and the specified torque (27.5kg for 6DB10P) during repairs.