
2016年第2期
文章编号:10094687(2016)02000905
车辆与动力技术 Vehicle & Power Technology
内燃机排放测量CVS系统控制软件设计
总第142期
郝利君,梁卿,袁应涛,王丽清,谭建伟,葛蕴珊
(1.北京理工大学机械与车辆学院,北京100081;2.陕西柴油机重工有限公司,兴平713105)
摘要:以AVL-CVS定容稀释取样系统作为开发对象,编写CVS系统控制程序,控制方案为集中式控制系统主控计算机与CVS系统硬件端口间的审行通讯采用AVL公司排放设备之间的通讯协议一AK协议为基础构建 CVS控制软件采用面向对象的可视化编程语言Delphi语言开发,实现了对CVS系统硬件设备的调节和控制,满
足了内燃机气态排放污染物及颗粒物的采样和测量的要求。关键词:内燃机;排放;CVS;控制软件;Delphi
文献标识码:A
中图分类号:U467.5+2
DesignofCvSSystemControlSoftwareforInternal-combustion
EngineEmissionsMeasurement
YUAN Ying-tao"”,
HAO Li-jun',LIANG Qing',
TAN Jian-wei',CE Yun-shan'
WANG Li-qing'
(1. School of Mechanical Engineering, Beijing Institute of technology, Beijing100081, China;
2. Shanxi Diesel Engine Heavy Industry CO. , LTD, Xingping, 713105, China)
Abstract: The control program of a CVS system was developed based on its dilution constant volume sampling system in AVL-CVS. The control scheme was designed by taking the AVL-CVS system as a distributed control system. The Serial communication between the host computer and CVS system hardware port was built on the AK communication protocol, the one between emissions equipments in AVL. The CVS control software was designed by using the object-oriented visual programming language, Delphi. The regulation and control of CVS system hardware are realized, and the requirement of sampling and testing is satisfied for the intemal combustion engine gaseous pollutants and particulate matter emissions.
Key words: intermnal combustion engines; emissions; CVS; control software; Delphi
随着经济的快速发展,我国汽车保有量也呈现出井喷式增长.2014年,全国汽车产销量分别为 2372万辆和2349万辆1),汽车数量剧增带来的汽车尾气排放对环境造成巨大影响,为了准确评估汽车发动机的排放性能,采用何种排放检测技术和检测方法显得尤为重要目前,世界各国的排放法规中规定机动车排放测试采用定容取样(CVS)系
收稿日期:2015-9-30
统取样,即将发动机的全部排气排入稀释通道中,用经过空气滤清器过滤的环境空气稀释,形成恒定容积流量的稀释排气。测试时的情况模拟汽车排气尾管出口处排气在环境空气中的扩散情况,这时稀释排气取样袋采集的气样中含有的污染物量与排气污染物总量的比例保持不变.因此,测试循环结束后,测量气袋中各污染物的浓度,乘上CVS系统
基金项目:国家环保公益项目(201409013)资助
作者简介:帮利君(1968-),男,副教投,研究方向为内燃机排放检测控制技术的研究。万方数据