徐继东1，阮寅生1, 2，王磊1，臧加伦1，白书战2*
1.潍柴动力股份有限公司发动机技术研究院，山东潍坊261061；2.山东大学能源与动力工程学院，山东济南250061
摘要：基于有限元研究气门与气门座圈在热-机耦合作用下的滑移情况，分析气门落座力、缸内爆发压力、气门锥角以及气门和座圈的密封宽度对气门和座圈密封面上节点滑移量的影响。结果表明，气门和座圈密封面上节点的平均滑移量随着气门锥角、爆压、气门落座力的增大而增大，随着密封宽度的增加而减小。为减小气门和座圈的磨损，应尽可能减小气门的落座力，对气门锥角和密封宽度等进行优化设计。
关键词：气门；气门座圈；热机耦合；滑移量
Abstract:Based on the finite element method, the slippage of valve and valve seat under the action of thermalmechanical coupling is studied.The influence of valve seating force, cylinder pressure, valve cone angle and sealing width of valve and slip on sealing surface of valve and seat ring is analyzed.The results show that the slip increases with the increase of valve cone angle, detonation pressure, seating force and the decrease of sealing width.In order to reduce the valve and seat ring wear,the seat force of the valve should be reduced as far as possible,and the valve cone angle and sealing width should be optimized.
Keywords:valve; valve seat; thermalmechanical coupling;slip
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