第34卷(2012)第3期性能与排放
柴油机 Diesel Engine
Vol.34(2012)No. 3
喷油提前角对非道路移动机械用柴油机性能的影响
邹强，李旭聪，姚春德”
（1.广西玉柴机器股份有限公司试验室，广西玉林537005； 2.天津大学内燃机燃烧学国家重点实验室，天津300072）
摘要：以一台四缸非道路移动机械用荣油机为试验发动机，在喷油提前角为3℃A、1℃A和-1℃A条件下，对发动机的外特性、经济特性以及排放特性进行了研究。研究表明：喷油提前角的推迟，对发动机动力性影响不大；但对柴油机的经济性影响比较大，尤其是发动机运行在中高转速时；喷油提前角对排放电有较大影响，随着喷油提前角的推迟，CO和HC挑放增加，NO, 排放得到一定程度的改善；喷油提前角3℃A下的八工况点比排放得到大幅改善。固此，通过调
整喷油提前角可使该非道路用柴油机达到拟国3排放法规的要求。关键词：非道路用柴油机；喷油提前角；性能
中图分类号：TK421*.2
文献标识码：A
文章编号：10014357(2012)03001404
Effect of Fuel Injection Timing on the Performance of Diesel Engines Used by Off-Road Mobile Machinery
Zou Qiang',Li Xucong,YaoChunde
(1. Laboratory of Yuchai Machinery Co. , Lid. , Guangxi Yulin 537005 2. State Key Laboratory of Engines, Tianjin University, Tianjin 300072)
Abstract: Based on one experimental diesel engine with four cylinders used by non-road mobile machin-ery , the extemal characteristics, economic performance and engine emission were studied deeply with dif ferent fuel injection timing of 3 °C A, 1 °CA and 1 °C A. The results indicated : the delaying of fuel in-jection timing has not much effect on dynamic characteristic of diesel engine, while economic characteris-tic of engine closely relates to fuel injection timing, especially when running at medium and high speed. The emission characteristic of engine is also Influenced by fuel injection timing. CO and HC emission of engine increases with delaying of fuel injection timing, while the tendency of NO, emission is different to that of CO and HC emission, improved to a certain extent. Emission quantity under eight operating modes with fuel injection timing 3 °C A drops greatly. Moreover, diesel engine with poor emission performance o seaeaoenarossaoaaaraaeeaaaiioeoroaen changing fuel injection timing.
Keywords : off-road diesel engine; fuel injection timing; performance
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引言
非道路移动机械用柴油机在我国使用面广，主
要应用于农业和工程机板，但其使用领域限制了柴
收稿日期：2011-11-01；修回日期：2012-03-08
基金项目：国家863项目资助，编号：2009AA045104
油机的生产成本，许多高新技术在非道路柴油机上得不到大力推广应用。随着人们节能减排意识的不断提高，环境间题也成为全球化问题。非道路用柴油机的经济性和排放也已成为广泛关注的焦点，为
作者简介：邹强（1972-），男，工程师，主要研究方向为发动机产品研发与试验，E-mail；souqiang@yuchai.en。