某汽油机低刚度气门弹簧的设计

Design of Low Stiff Valve Spring for a Gasoline Engine

气门弹簧是为了满足配气机构的需求,保证气门及时关闭、平稳落座。同时,抵消配气机构在工作过程中的惯性力,防止传动件之间的脱落。通过设计低刚度气门弹簧,可以有效改善配气机构所带来的振动,提高发动机的舒适性;改善传动件之间的受力情况,降低传动件之间磨损程度;同时也可以降低凸轮驱动力矩,减小驱动能耗,保证发动机输出更高的有效能量。显然,气门弹簧在配气机构中起到了至关重要的作用。

The function of a valve spring is to satisfy the requirement of a valve train. The spring can ensure a valve to close on time and seat smoothly. Meanwhile, it can counteract the inertia force during the movement of valve train components and prevent contacting bodies in the system from loosing contact. A low addition, the new spring also can lower cam drive torque, thus decreasing power consumption. Obviously, a valve spring can play an important part in a valve train.