液压挺柱泄沉时间对气门升程影响的研究

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英文篇名：Study on the Relationship between the Leakdown Time of the Hydraulic Tappet and the Valve Lift Loss 作者：赵波 ; 孟祥斌 ; 刘东 ; 赵福成 ; 王瑞平 英文作者：Zhao Bo;Meng Xiangbin;Liu Dong;Zhao Fucheng;Wang Ruiping;Ningbo Geely Royal Engine Components Co., Ltd.;Zhejiang Geely Royal Engine Co., Ltd.; 关键词：液压挺柱 ; 泄沉时间 ; 气门升程损失 英文关键词：Hydraulic tappet;;Leakdown time;;Valve lift loss 中文刊名：XXNR 英文刊名：Small Internal Combustion Engine and Vehicle Technique 机构：宁波吉利罗佑发动机零部件有限公司;浙江吉利罗佑发动机有限公司; 出版日期：2019-04-25 出版单位：小型内燃机与车辆技术 年：2019 期：v.48;No.256 语种：中文; 页：XXNR201902004 页数：5 CN：02 ISSN：12-1440/TK 分类号：22-25+98

摘要

利用CAE模拟仿真分析及配气机构动态测试试验,就缸内直喷增压发动机液压挺柱泄沉时间对气门升程的影响进行了研究和分析,探究了配气机构对发动机整体性能的影响。研究结果表明,发动机冷启动时,若泄沉时间长,易产生冷启动异响;泄沉时间太短,气门升程损失较大。通过对试验数据的整理分析,从几个方面研究液压挺柱泄沉时间对气门升程损失的影响,最终选择合适的泄沉时间来匹配发动机的性能开发。
        The relationship between the leakdown time of the hydraulic tappet and the valve lift loss is studied in a direct injection turbo-charged gasoline engine. The relationship between the leakdown time of the hydraulic tappet and the valve lift loss is analyzed by CAE simulation and valve train system dynamic testing, exploring the effect of valve trains system on engine performance. Finally came to two conclusions,the first is that if the leakdown time is too slow, it will produce a cold start abnormal sound; the second is that if the leakdown time is too fast, it will influence valve lift and also will be easy to produce the valve lift loss. Through analysis of the testing data and theoretical reasoning, studying from several aspects about the relationship between the leakdown time of the hydraulic tappet and the valve lift loss, finally the leakdown time is optimized to match the engine performance development.

引文

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