为考察曲轴轴颈和轴瓦在运行中的磨损规律并确定影响上述零件磨损的因素而进行的研究具有科学的和实际的意义。在图1和表1中列出了工作容积V_(si)=2.445(A)和4.25((?))升的发动机的曲轴轴承中轴颈磨损和磨损不均匀性、间隙和间隙不均匀的数据。用系数ε_(?)和ε_(?)评价主轴颈和连杆颈的磨损不均匀性,用系数ε_(kp)和ε_(?)评价主轴承和连杆轴承中的间隙〔1〕。可以看出,对于发动机A和(?),在其数学期望值为66和78um的情况下,主轴颈磨 It is of scientific and practical significance to study the wear rules of crankshaft journal and bearing bush during operation and to determine the factors affecting the wear of the above components. In Table 1 and Table 1, the journal wear and wear unevenness of the crankshaft bearings in engine crankshaft with working volume V Si = 2.445 (A) and 4.25 ((?)) Liters are listed with non-uniform gap and gap data. The coefficient of wear ε_ (?) And ε_ (?) To evaluate the main journal and connecting rod neck wear unevenness, with the coefficient ε_ (kp) and ε_ (?) Evaluation of the main bearing and connecting rod bearing clearance [1]. It can be seen that for the engines A and (?), With their mathematical expectations of 66 and 78 um, the main journal mill