【作者】 江楠；

【导师】 陆辰；

【作者基本信息】 山东大学 ， 动力机械及工程， 2013， 硕士

【摘要】 本课题是关于“柴油／天然气双燃料发动机改造设计和试验研究”,它是由山东大学能源与动力工程学院内燃机研究所和淄博柴油机总公司合作开发项目。随着石油燃料的紧缺和大气污染的加剧,人们越来越重视燃用石化燃料的发动机给人们带来的影响,因此,寻找石油燃料的替代能源,研究降低发动机排放的各种方法成为了当务之急。本文首先介绍了天然气理化性质,当前双燃料发动机技术的各种应用,国内外针对于双燃料发动机的改造技术背景和应用。然后按照双燃料发动机开发改造项目要求对原柴油机燃料供给系统进行改造设计,增加了一套新的天然气供给系统,并对这套供给系统进行了介绍。而后介绍了双燃料发动机电子控制系统设计,列举了双燃料发动机电子控制系统中几种重要的传感器、执行器以及电子控制系统中硬件电路,包括核心处理器,信号采集处理电路,执行器驱动电路和通讯电源电路。同时也介绍了模块化软件设计,包括了信号采集处理软件模块,通讯模块,执行器控制模块,以及一些软件控制算法。最后介绍了一些试验研究结果和性能评价,包括发动机在双燃料模式工作的燃油替代率,双燃料和纯柴油两种模式下的缸内压力、压力升高率等基本燃烧参数的对比分析,两种模式下的缸内燃烧状态,如循环变动以及各缸燃烧不均匀性的对比分析,以期更好地为进行双燃料发动机电子控制提供试验数据支持。更多还原

【Abstract】 This topic is about "design transformation and experimental investigation on diesel and natural gas dual fuel engine". It is a cooperation project by Internal Combustion Engine Institute of School of Energy and Power Engineering in Shandong University and Zibo Diesel Company. With the shortage of petroleum fuel and the air pollution, people pay more and more attention to influence on life that engines burning fossil fuels bring to us. Therefore, It has been urgent affairs to search for alternative fuel to oil and to study on the various methods to reduce engine emission.At first, this paper introduces the physical and chemical properties of natural gas, the various current application of the dual fuel engine technology, reforming technology background and application of dual fuel engine at home and abroad. Then, the original diesel engine fuel supply system was reformed and designed according to requirements of the dual fuel engine development and design project. A set of natural gas supply system was added and introduced in papers. And then the dual fuel engine electronic control system design was introduced several kinds of important sensors,actuators and hardware circuit including the core processor, signal collection and processing circuit, actuator drive circuits, communication circuit and power supply circuit were enumerated in the dual fuel electronic control system. Also the modular software design including the signal collection and processing software module, communication module, the actuator control module, as well as some software control algorithm was introduced. Finally some experimental study results and performance evaluation was introduced, including the engine fuel replacement rate of the engine working in dual fuel mode, contrast analysis of basic combustion parameters such as cylinder pressure and rate of pressure rise in two different combustion mode, combustion state such as contrast analysis of cycle variation and cylinder-by-cylinder variations in two different combustion mode. So that experimental data support can be provided for dual fuel engine electronic control better.更多还原