文档介绍：西华大学硕士学位论文
摘要
在发动机应用中,pressed Natural Gas)燃料较之于汽油燃
料具有良好的排放性和经济性优势。G 燃料在汽车上的应用
研究虽然已有一定的基础,G 燃料发动机尚不多见;G 加气站等
配套设施也还不完善,不能完全满足实际应用的需求。因此,利用传统燃油汽车进行燃
气系统匹配研究,G 和汽油两用燃料汽车,发挥天然气清洁燃料的优势,具有
十分重要的现实意义。
本文通过分析工业产品的开发流程,将双向工程理论应用于燃气汽车研发过程,参
G 两用燃料轿车燃气系统的匹配研究工作,使
整车的排放水平达到国Ⅳ排放法规要求,并通过了高寒、高温和高原地区的可靠性考核,
为实现两用燃料汽车的研发奠定了基础。
在论文中,G 两用燃料汽车双向开发总体方案,分析了国外两用燃料
汽车燃气系统部件的功能原理、布置要求、工作条件以及燃气系统与燃油系统之间的逻
辑关系、切换条件等,并结合目标工程需求,确定了具体研发过程。在此基础上,对该
汽油轿车进行燃气系统匹配、布置,并进行优化设计。为使整车运行综合性能达到应用
要求,G 进行基础标定,以及整车驾驶性、排放性和极限工况的标定。
为验证各种需求目标,进行了一系列发动机性能试验以及整车排放、道路验证试验。
通过对排放结果、主观驾驶感觉等试验结果的比较可知,G 两用
燃料汽车燃气系统的匹配是成功的。为此,可得出如下结论:采用双向工程理论,可为
整个燃气汽车的研发过程提供统筹思路,使项目能够快捷实施,实现有序的研发过程,
从而节省大量的研发时间及研发成本。

关键词:两用燃料汽车;双向工程;标定;控制策略;排放控制

I
G 两用燃料汽车燃气系统匹配研究
Abstract
bustion engines for vehicles can be used G (Compressed Natural Gas)
which can contribute to better emissions and lower running costs.
Natural gas reserves are abundant in our country, and research and application G as
an automotive fuel is ing more popular. G refueling infrastructure is not
sufficiently developed, G engines are seldom used due to its limits on practical
applications. Therefore, the base gasoline vehicles are usually used as the basis for the
development of bi-fuel G vehicles that can take full advantage of the natural gas
and are viable for practical applications.
In this paper, a two-direction engineering theory was applied G vehicle project
development process after analyzing industrial product development process. The research
work involved a G bi-fuel vehicle that was essfully development based on one
sedan. The vehicle emission has met State emissions regulations IV, and passed validation
assessment on cold, heat and high altitude areas, which has created a strong basis for the bi-fuel
vehicle development.
In the paper, according to the overall program of gasoline / CNG bi-fuel vehicle on
two-direction development, operating principle of gas ponents, layout requiremen