三角活塞旋转式发动机（以下简称转子发动机）与往复式发动机相比，在升功率、比重量、比体积等方面具有明显优势；在无需作结构改变的情况下，转子发动机既可燃用柴油、航空煤油等多种石油燃料，也可燃用醇类、天然气等代用燃料（包括人造合成燃料）；多种燃料转子发动机采用高压燃油喷射和点火相结合的控制方式，其燃烧过程具有压燃式和点燃式内燃机的双重特点，是多种燃料转子发动机的技术核心。转子发动机的电控技术研究在国内尚处于起步阶段。本论文的主要工作是多种燃料转子发动机控制策略和软件的设计及试验研究，对提高我国转子发动机技术水平，具有重要意义。 论文首先分析了气道喷射式汽油转子发动机的工作时序，以此设计电控系统软件的基本时序框架。然后通过调研和查阅文献，研究分析发动机的燃油喷射系统、点火系统及润滑系统，明确其工作特点及控制要求，设计点火控制程序、喷油控制程序和计量泵控制程序。完成电控系统软硬件研制后，在样机上进行了台架试验，实现了对转子发动机的控制，初步掌握转子发动机的工作特点，并获取了基本的控制参数。 论文工作的重点是研制多种燃料转子发动机的电控系统。本课题的转子发动机主要燃用柴油，针对其燃烧同时具有点燃和压燃的特点，安装了多火花点火系统和高压共轨系统，并设计了相应的控制程序。在调研和查阅文献，了解柴油转子发动机的燃烧机理的基础上，论文研究分析了点火、喷油和燃烧室形状等关键因素对燃烧过程的影响，根据试验样机不同的燃烧室及所能提供的条件设计了多种控制方案及其相应的控制策略和点火、喷油控制程序；通过发动机的台架试验，对多种控制方案进行了比较，根据试验结果对控制策略进行了分析研究，从而改进电控系统的软硬件。台架试验验证了电控系统的软硬件功能，柴油转子发动机能够稳定的工作。 论文的最后对现已完成的工作进行了总结，并就今后的工作提出了意见。

Wankel rotary engines, in which the major moving part is a triangular rotor instead of a piston in reciprocating engines, have significantly fewer parts, more power output per liter and lower weight to power ratio than reciprocating engines. Rotary engines can operate on a wide variety of liquid and gaseous fuels from usual petroleum fuel (diesel, gasoline, aviation kerosene, et al) to Alternative Fuel (natural gas, methanol fuel, biomass producer gas, et al), without modifying the engine structure. The multi-fuel rotary engine combines high-pressure fuel injection system with spark ignition, hence it has combustion characteristics of both compression ignition engines and spark ignition engines, which is the core of control technology of multi-fuel rotary engines. In this thesis, design and experimental investigation on control strategy and software for multi-fuel rotary engine is described. The development of the electronic control technology on rotary engines is still at an initial stage in our country, so it is important to improve domestic control technology on rotary engines. First, the cyclic timing of the gasoline rotary engine, which is the base of engine control, is analyzed in this thesis. Then, by studying the fuel injection system, spark ignition system and lubrication system that assembled on the gasoline rotary engine, the demand on the system control is realized. The software program for the fuel injection, spark ignition and metering oil pump control is designed, where after the experiment on a trial engine was conducted to validate the function of the electronic control system. The main object of this thesis is to build an electronic control system for the multi-fuel rotary engine, which is fed on diesel mainly. The diesel rotary engine has combustion characteristics of both compression ignition engines and spark ignition engines, by assembled with multi-spark ignition system and high-pressure common rail system. Referring to the combustion theory of rotary engine, the key factors of spark ignition parameters, fuel injection parameters and the geometries characteristic of the combustion chamber, which affect the combustion process much, are study and analyzed. Aimed at the point of the different combustion chamber and based on the conditions provided by the trial engine, several cases of control strategies and relative software are designed. With the results of the times of experiments, different strategies were compared with each other, and the software was improved. Through experiment on the testing bed, the credibility of the electronic control system is confirmed. At the end of the thesis, the work on the multi-fuel rotary engine project is summarized, and the aspects to be improved in the future are indicated.