国六重型天然气汽车失火标定研究  

Study on Misfire Calibration For China VI Heavy Duty Natural Gas Vehicle

作　　者：曹林 吴顺清 杨显利 王龙宇 Cao Lin;Wu Shunqing;Yang Xianli;Wang Longyu(Commercial Vehicle Development Institute,FAW Jiefang Automobile Co.Ltd.,Changchun 130011)

机构地区：[1]一汽解放汽车有限公司商用车开发院,长春130011

出　　处：《汽车文摘》2023年第8期36-41,共6页Automotive Digest

摘　　要：发动机失火是影响整车高品质的重大问题,国六重型天然气汽车失火问题是行业难题。针对某重型天然气车的实际失火问题开展调研,基于整车标定过程,概要分析了车型失火的硬件和软件方面成因,深入研究了与废气再循环(EGR)、过量空气系数模块有关的标定改进方案,该方案组合面向解决高原、高寒、高温和山区场景下的整车失火的典型问题,在本车型应用效果良好,为解决重型天然气汽车失火提供新的标定视角和思路。Engine misfire is a major problem affecting the high quality of the vehicle,and misfire problem of heavy natural gas vehicle for China VI is a difficult problem in the industry.In this paper,the actual misfire problem of a heavyduty natural gas vehicle is studied.Based on the field of vehicle calibration,the causes of misfire in hardware and software are analyzed,and the calibration improvement scheme related to Exhaust Gas Recirculation(EGR)and excess air ratio(λ)module is studied in depth.The scheme combination aims to solve typical vehicle misfire problems in plateau,high cold,high temperature and mountainous areas,and has good application effect on this model,providing a new calibration perspective and ideas for solving misfire of heavy duty natural gas vehicle.

关 键 词：天然气汽车 标定 失火 废气再循环 过量空气系数 

分 类 号：U467.21[机械工程—车辆工程]