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寒区缸内直喷发动机机油液面异常增高问题研究

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寒区缸内直喷发动机机油液面异常增高问题研究
Abnormal Increase of Oil Level in Gasoline Direct Injection Engine at Freezing Area
投稿时间:2019-07-02
DOI:10.15918/j.tbit1001-0645.2019.190
中文关键词:寒冷地区机油液面升高试验研究喷油方式发动机温升速率
English Keywords:freezing areaoil level increaseexperimental studyinjection methodengine temperature rise rate
基金项目:
作者单位E-mail
张付军北京理工大学 机械与车辆学院, 北京 100081
北京理工大学 深圳研究院, 广东, 深圳 518057
张禄兴北京理工大学 机械与车辆学院, 北京 100081zhang6xing@gmail.com.
邬平北京理工大学 机械与车辆学院, 北京 100081
武浩北京理工大学 机械与车辆学院, 北京 100081
摘要点击次数:2013
全文下载次数:1354
中文摘要:
针对缸内直喷车辆在寒冷地区出现的机油液位异常增高问题,对其产生的机理与问题解决方法进行了试验研究.选择三个厂家车辆在黑河地区进行寒区户外实车实验.实验过程中对机油液位、机油温度和冷却水温度等参数变化进行记录.提出以机油液面高度和机油液面升高速率为指标评价各影响因素对机油液面升高问题影响的方法.通过控制变量法,选择适当循环数据对各影响因素效果进行分析.实验结果表明:喷油方式和发动机温升速度是影响机油液位升高的重要因素.通过增加喷射次数、提高发动机温升速度等措施可降低机油液面升高速度,加快机油液面平衡,减小机油液面高度.
English Summary:
The increase of oil level is a problem of gasoline direct injection engine at freezing area. The research was carried out to study the mechanism and solution of the problem. Selecting some test vehicles from three different manufacturers,the outdoor experiments were carried out in Heihe district. In the experiment, the change of oil level, oil temperature and cooling water temperature were recorded. Taking the oil level height and oil level rise rate as criterion to evaluate the influencing factors of oil level rise, the main influencing factors of oil level rise were analyzed separately through variable control. The results of the experiment show that the fuel injection mode and temperature rise speed of engine are main reasons of the rise of oil level. The increase of injection times and engine temperature rise speed can reduce the rise rate of oil and speed up the oil level to balance.
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