中文摘要：

根据热力学第一定律和双燃料发动机燃烧的特点，提出了一个描述双燃料发动机燃烧特性的多区模型，建立了求解双燃料发动机放热规律的微分方程式，基于Windows界面开发了计算双燃料发动机燃烧放热规律的软件，并应用于一台生物质制气一柴油双燃料发动机。研究结果表明，双燃料发动机与燃用纯柴油时的发动机相比，着火延迟期增加，最大放热率升高，燃烧持续期延长。

英文摘要：

A new multi-zone combustion and heat release model has been developed based on the first law of thermodynamics and combustion characteristics of dual-fuel engine. Also the differential equations calculated the heat release rate of the combustion have been deduced and applied on a biogas diesel dual-fuel engine. The research results showed that the top heat release rate of dualfuel engines was larger than that of the original diesel engines, however the ignition delay period and the combustion duration increased.