中文摘要：

液压约束活塞发动机（HCPE）是一种新型的将燃料在发动机缸内燃烧产生的热能转化成流体压力能的动力装置,其运转平稳性是设计分析和性能评价的重要依据。针对假定曲轴等角速度转动研究发动机的工作平稳性的方法与实际不符,基于CAD/CAE软件建立了三缸轴向HCPE的仿真模型,提出不动点迭代的转速调控方法可使曲轴很快收敛到某一工作转速。假定瞬时角速度可变进行了仿真研究,结果表明,三缸轴向HCPE的运转不均匀度为4.75%,可以满足使用要求。

英文摘要：

Hydraulic confined piston engine（HCPE） is a new type of power system to transform the thermal energy from fuel combustion in cylinder into hydraulic energy directly.Its running stability is an important basis of design analysis and performance evaluation.Previous research achievement on running stability of engine was based on a hypothesis that the angle-velocity of the crankshaft is a constant before,and this method was not based on actual conditions.In this paper,the simulation model of HCPE is built in software CAD/CAE,and it supposes the instantaneous angle-velocity is variable.The angle-velocity of the crankshaft can be converged to a working speed by a new way,controlling the rotated speed by fixed point iteration method.The running stability can reach 4.75% by this way,and it satisfies the requirements.