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1. 发明申请

WO2014012293A1 INTERNAL-COMBUSTION ENGINE CONNECTING ROD HAVING HARD BASE AND SOFT STRUCTURE 审中-公开
标题翻译：内燃机连杆具有坚硬的底座和柔软的结构
公开(公告)号：WO2014012293A1
公开(公告)日：2014-01-23
申请号：PCT/CN2012080791
申请日：2012-08-30
申请人： DONGFENG COMMERCIAL VEHICLE CO LTD , JIANG MING , SU HONGJI , CHEN XIAOXUN , LI WEIGUO , WU HONGLIANG
发明人： JIANG MING , SU HONGJI , CHEN XIAOXUN , LI WEIGUO , WU HONGLIANG
IPC分类号： F16C7/02
CPC分类号： F02B75/04 , F16C7/023 , F16C9/00 , F16C9/04 , F16C17/02 , F16C33/1065 , F16C2240/18 , F16C2240/42 , F16C2240/70 , F16J1/16 , F16J7/00
摘要： An internal-combustion engine connecting rod having a hard base and a soft structure includes a connecting rod small end (1) and a connecting rod body (2), a connecting rod small end hole (3) being arranged in the connecting rod small end (1). The connecting rod small end has a hard base and soft structure, that is, the connecting rod small end uses a steel material or an alloy material having a tensile strength of sigmab>=700MPa as the hard-base material, and the connecting rod small end (1) has a flexible structure in which, under the action of cylindrical pressure through a piston pin (4), the elastic deformation Delta2 generated by the connecting rod small end hole (3) in the axial direction is adaptive to the bending deformation Delta1 generated by the piston pin (4) in the axial direction, said piston pin (4) being matched with the connecting rod small end hole (3). This allows the connecting rod small end hole to be well matched with the piston pin under all operating conditions, and the friction performance between the connecting rod small end hole and the piston pin is completely improved.
摘要翻译：一种具有坚硬底座和软结构的内燃机连杆，包括连杆小端（1）和连杆体（2），连杆小端（3）设置在连杆小端（1）。连杆小端具有坚硬的底座和柔软的结构，即连杆小端采用钢材或抗拉强度σ> 700MPa的合金材料作为硬质基材，连杆小（1）具有柔性结构，其中在通过活塞销（4）的圆柱形压力的作用下，连杆小端孔（3）沿轴向产生的弹性变形量Δ2适应于弯曲变形所述活塞销（4）沿轴向方向产生的所述活塞销（4）与所述连杆小端孔（3）相配合。这使得连杆小端孔在所有工作条件下都能与活塞销良好配合，从而完全改善连杆小端孔与活塞销之间的摩擦性能。

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