压缩释放制动在重型柴油机上的应用研究  

Application of Compression Release Brake on Heavy Duty Diesel Engine

作　　者：张英 钟跃兰 翟长辉 ZHANG Ying;ZHONG Yuelan;ZHAI Changhui(State Key laboratory of Engine Reliability,Weifang 261061,China;Weichai Power Co.,Ltd.,Weifang 261061,China)

机构地区：[1]内燃机可靠性国家重点实验室,山东潍坊261061 [2]潍柴动力股份有限公司发动机研究院,山东潍坊261061

出　　处：《车用发动机》2018年第5期77-81,86,共6页Vehicle Engine

摘　　要：基于市场对重型车辆的制动需求和相关法规,比较了几种常见的辅助制动装置,最终选择了发动机压缩释放辅助制动作为产品的开发依据。根据市场需求,开发了某款基于10L/12L发动机的辅助制动系统,从方案设计和试验过程两个方面详细介绍了该压缩释放制动系统。方案设计阶段:本着改动最小、对车辆无影响的原则,对运动机构、制动油路和电控部分进行方案设计;试验过程阶段:对气门间隙进行了调整,测试了缸压、气门升程、推杆力、排气温度、制动功率等关键参数,验证了方案的制动性能和可靠性。Based on the market requirements and legislations for brakes of heavy duty vehicles,several kinds of common supplemental brake devices were compared and the engine compression release brake was finally determined as the development reference.One supplemental brake system for 10 L/20 L engine was developed in accordance with the market requirements and the compression release brake system was introduced in detail from the aspects of project design and test process.The actuation mechanism,brake oil circuit and electronic control module were designed based on the principle of little change and influence.In the end,the valve clearance adjustment was conducted and the parameters such as in-cylinder pressure,valve lift,pushing force,exhaust temperature and brake power were measured,which verified the brake performance and reliability of the designed scheme.

关 键 词：发动机辅助制动 制动功率 压缩释放制动 

分 类 号：U262.6[机械工程—车辆工程]