电涡流测功机在发动机稳态循环试验中的应用  

Application of Eddy Current Dynamometer in Engine Steady-state Cycle Test

作　　者：王勇 肖俊 WANG Yong;XIAO Jun(Qinghai Plateau Science and Technology Development Co.,Ltd.,Xining 810006,China;Qinghai Province Power Machinery Key Laboratory of Plateau Performance and Emission,Xining 810006,China)

机构地区：[1]青海省高原科技发展有限公司,西宁810006 [2]青海省内燃动力机械高原动力和排放重点实验室,西宁810006

出　　处：《内燃机与配件》2021年第20期3-5,共3页Internal Combustion Engine & Parts

基　　金：《机动车及非道路机械高原实际道路行驶测试关键技术研究与示范》(项目编号:2019-GX-A6);《发动机高原动力与排放测试能力提升》(项目编号:2021ZY003)。

摘　　要：本文依托海拔2200米电涡流测功机试验台架,以便携式排放测试系统(PEMS)为测试手段,基于全球统一的重型车稳态循环(WHSC循环),在高原环境条件下对一台国Ⅵ发动机的原机和尾排(带后处理)的气态污染物排放量进行了试验测试,分析研究了发动机后处理系统对气态污染物排放量的影响趋势和电涡流测功机在排放试验中的局限性。结果表明发动机后处理系统能显著降低汽车尾气中的氮氧化物(NOX),氮氧转化效率高达96.5%;电涡流测功机因其加载特性限制,不能满足国Ⅵ法规瞬态排放测试要求。Based on the 2200m Eddy current dynamometer test-bed,the portable emission test system(PEMS)is used as the test method,the emission of gaseous pollutants from the primary engine and the tail section(with post-treatment)of a domestic VI engine was tested under the plateau environment,the influence tendency of the engine aftertreatment system on the emission of gaseous pollutants and the limitation of the eddy current dynamometer in the emission test are analyzed.The results show that the engine aftertreatment system can significantly reduce the nitrogen oxide in automobile exhaust,and the conversion efficiency of nitrogen and oxygen is as high as 96.5%.The Eddy current dynamometer can not meet the requirements of VI regulation for transient emission test because of its loading characteristics.

关 键 词：电涡流测功机 高原环境 柴油发动机 稳态循环(WHSC) 气态污染物 

分 类 号：V235.12[航空宇航科学与技术—航空宇航推进理论与工程]