潍柴动力股份有限公司，山东 潍坊 261000
Abstract：Finite element analysis and discrete Fourier transform are used to analyze the cylinder bore deformation caused by the shaping honing tooling and the cylinder head assembly on the cylinder block of a medium-duty diesel engine, and the correlation coefficient method is used to analyze the consistency and difference between them. The cylinder bore deformation test and bench durability test are carried out on the cylinder block samples. The analysis and test results show that the consistency coefficient of the two is less than 1 ± 5%, the system deviation is about 0, and the correlation coefficient is greater than 0.95, indicating that the rigidity of the honing tooling is very close to that of the cylinder head, which can be applied to the shaping honing of the cylinder block. The shaping honing technology can greatly reduce the cylinder hole deformation and reduce the carbon emission and pollutant emission level of diesel engine.
Keywords:diesel engine；crankcase；form honing; bore deformation