单燃料LPG电喷发动机的排放试验研究  

A Study on a High-speed Spark Ignition Enginewith Sole-LPG Electronically Controlled Injection System

作　　者：胡春明[1] 刘娜[1] 阎力 王伟生 邓志勇 

机构地区：[1]天津摩托车技术中心 [2]重庆隆鑫集团技术中心

出　　处：《摩托车技术》2005年第2期11-14,17,共5页Motorcycle Technology

摘　　要：通过优化发动机压缩比,调整点火提前角,改善了LPG电喷发动机的燃烧过程。实验结果表明,电控喷射LPG燃气发动机外特性功率、转矩的最大下降较原汽油机分别小于3.0％、3.2％;在常用部分负荷工况,发动机CO排放小于1％、HC排放小于150×10-6,NOx排放也得到较大幅度改善。Development on sole-LPG electronically controlled injection system with closed loop and the corresponding application on a high-speed spark ignition engine have been introduced in this paper. The engine combustion process with electronically controlled LPG injection system has been improved through the optimization of engine compression ratio, adjustment of the ignition timing. The testing data show that, the maximum reduction of the LPG engine power and torque at full load are within 3.0%, 3.2% separately; at partial loads, CO emission is under 1%, HC emission is not exceed 150 × 10-6, and NOx emission has been controlled greatly.

关 键 词：排放试验 单燃料 HC排放 LPG 发动机压缩比 NOx排放 燃烧过程 电喷发动机 点火提前角 CO排放 

分 类 号：TK464[动力工程及工程热物理—动力机械及工程]