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zhe liang gen qu zhou wei he ru ci duan ming
Author(s): 
Pages: 20
Year: Issue:  2
Journal: Farm Machinery

Keyword:  机油压力连杆轴颈沟痕主轴颈敲击声机检早期磨损底壳热磨合半干摩擦;
Abstract: <正> 一台江淮-50型拖拉机配套的495型发动机,大修后5个月,机油压力即由原来的正常值逐渐下降到49千帕(0.5千克力/厘米~2),发动机工作时伴有沉重的敲击声。拆机检修时发现,该机各系统技术状态均好,但大修时更换的曲轴主轴颈、连杆轴颈和轴瓦均已严重磨损,主轴颈和连杆轴颈表面产生许多环状沟痕。经测量,磨损最严重的一
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