In this paper , a model for working process simulation of small two - stroke si engines is developed . therefore , the working process of si engine can be described on theoretical basis . the results of the simulation are agreed perfectly with that of test . thus it can provide support for design and structure modification of small two - stroke si engines 本文建立了用于小型二冲程汽油机的缸内工作过程计算模型，应用理论计算方法对缸内工作过程进行了较为详尽的描述，计算结果与试验结果基本吻合，为小型二冲程汽油机的设计提供了较好的依据。
Exhaust gas emission of the gasoline engines is the main source which causes air pollution moreover , the emission is interrelated to the combustion of gasoline engines in order to reduce the amount of the emission , it is necessary to study the relationship between ignition parameters and the emission 汽油机的废气排放是大气污染的主要污染源，而废气排放与燃烧过程紧密相关。为了减少废气排放，有必要研究汽油机点火参数与废气排放的关系，因此研制一种可连续测量的车载废气检测仪是十分必要的。
4 . analysing the data of test result acquiring by the ecu monitoring software , the fuel injection base map and related correction curves are roughly delivered , the fuel injection control strategy for this type of engine is developed , and the flow chart of ecu control program for fuel injection control is also designed 4 、分析监测软件所采集的数据,分析电控燃油喷射系统工作参数之间的关系,得出比较粗略的基本喷油map图和各种相关修正曲线,最后制定了适用于该小型二冲程汽油机的喷油控制策略,并给出了ecu喷油控制程序的流程图。
The result from the theorys and the experiments show that , compared with the carburetor engine , the electronic fuel injection wj1e68fm2 gasoline engine has obviously improve on the fuel economy and exhaust emission . standard . there will make a solid foundation for the survival and development of the wj1e68fm2 gasoline engine 试验结果表明，电喷wj1e68fm _ 2型汽油机与化油器式汽油机相比，在燃油经济性和排放指标两方面都有明显的改善。为wj1e68fm _ 2型汽油机的继续生存和发展奠定了基础。
Fea technology is used to analysis the structural strength , stiffness and temperature field of the cylinder block of model b3e gasoline engine . the precise 3 - d geometry model of cylinder block is built with unigraphics , a professional cad modeling software . the boundary conditions are obtained by analytic method , and the model is submitted to fem program msc 利用有限元分析技术对b3e型汽油机的机体进行了结构强度、刚度以及温度场的分析计算，利用专业的计算机辅助设计三维造型软件unigraphics建立了较为精确的机体三维几何模型，用解析法获得边界条件，用msc
On the basis of advanced electric control technology , my works are carry on analysis and design about the hardware and software of ecu . the idle speed control aim is make gasoline keep well property under the low rotation . in accordance with 465q gasoline specific conditions , we take use of fuzzy control theory on idle speed control of gasoline , and make step - motor to idling executive body . appling intel 80c196kb chip , we program idling the main order , software time implement break sub - order and delay sub - order in compilation language 怠速控制的目的则是保证在较低的转速下保持汽油机具有良好的性能，我们在分析465q汽油机的具体情况的基础上，把模糊控制理论用在汽油机怠速控制方面，用步进电机作为怠速执行机构，并以intel的80c196kb单片机为主芯片设计了怠速控制系统的软硬件，用intel汇编语言设计了怠速主程序，软件定时器中断服务程序，三相单三拍步进电机正反转子程序，延时子程序汇编软件。
The results of the experiments show that the soot emission decreased greatly and the nox emission was improved , while co and hc emission increased but still lowered than gasoline engine , the power output and torque of the engine have not been influenced and the specific energy consumption was improved 试验结果显示，这种新型的燃烧模式不仅改善了发动机的碳烟排放，而且no排放也得到了改善，而hc 、 co排放则较原机严重，但还是低于汽油机的排放水平；发动机的动力性能未受影响，能耗率有所改善。
Technological development of gasoline ecu promote the whole vehicle industry . taking use of technology of ecu can effective improve power , economic and emission of gasoline . it ' s one of the most effective methods that can make gasoline realize high - efficiency , low - pollution 汽油机电子控制技术的发展给整个汽车工业带来了巨大的生命力，采用电子控制技术能有效的改善汽油机的动力性、经济性及排放指标，是迄今为止实现汽油机高效率、低污染的最有效的、最简洁的途径之一。
Our company adopts the metal honeycomb or the metal network board carrier , with special coating coating technology and processing technology , prepare different forms , the all kinds of catalysiseses of specification , used in petrol exhaust . with the characteristic of light in low temp , purification efficiency high and long life etc . main technological schemes as below 通用汽油机净化器我公司采用金属蜂窝或金属网板载体，通过特殊的涂层涂覆技术及加工工艺，可制备不同形状规格的各类催化净化器，用于汽油机的排气净化，具有起燃温度低净化效率高使用寿命长等特点。
Abstract : in this paper , a model for working process simulation of small two - stroke si engines is developed . therefore , the working process of si engine can be described on theoretical basis . the results of the simulation are agreed perfectly with that of test . thus it can provide support for design and structure modification of small two - stroke si engines 文摘:本文建立了用于小型二冲程汽油机的缸内工作过程计算模型，应用理论计算方法对缸内工作过程进行了较为详尽的描述，计算结果与试验结果基本吻合，为小型二冲程汽油机的设计提供了较好的依据。
