摘要
介绍按应力波理论推导出的无推杆式低惯量喷油嘴的针问座面冲击应力的计算公式，该式不仅为此类喷油嘴的设计和启喷压力的选择提出了一个可靠的理论依据，也解决了长期以来此类喷油嘴用传统计算公式计算得到的允许启喷压力值与其实际应用的启喷压力值不一致的矛盾．
This paper presents a formula, which is derived from the theory of strain wave, to calculate the seating stress for the low-mass fuel injector without push-rod. It is illustrated that the calculating results by the formula well tally with those in practice. Therefore, the formula could be used as a basis to design a nozzle and to select the needle valve opening pressure for the fuel injector without push-rod. Meanwhile, the new formula presented in this paper also solves the contradiction that the needle valve opening pressure used in practice is not in accordance with the one calculated from the old formula.
出处
《力学与实践》
CSCD
北大核心
1999年第4期56-61,共6页
Mechanics in Engineering
