孟育博,高雅,黄玉春,等.共轨系统喷油量偏差及压力波动的抑制研究[J].内燃机工程,2023,44(1):9-16.
共轨系统喷油量偏差及压力波动的抑制研究
Research on Inhibition of Fuel Injection Quantity Deviation and Pressure Fluctuation in Common Rail System
DOI：10.13949/j.cnki.nrjgc.2023.01.002
关键词:高压共轨系统  滤波器  压力波动  多次喷射  喷油量偏差
Key Words:high pressure common rail system  filter  pressure fluctuation  multi-injection  fuel injection quality deviation
基金项目:河南省高等学校重点科研项目（21B460001）；河南工程学院博士培育基金项目（DKJ2019021）
作者单位E-mail
孟育博* 河南工程学院 机械工程学院，郑州 451191 myb0201@126.com 
高雅 河南工程学院 机械工程学院，郑州 451191  
黄玉春 河南工程学院 机械工程学院，郑州 451191  
董运福 河南工程学院 机械工程学院，郑州 451191  
李丕茂 北京理工大学 清洁能源实验室，北京 100081  
摘要点击次数: 1525
全文下载次数: 884
摘要:为有效对喷油器入口处产生的压力波动进行抑制，采用新型阻尼滤波器进行压力波动控制效果的试验研究。在不同滤波器容腔体积、喷射控制策略和轨压下，研究在长度更长、直径更小的高压油管中的滤波效果。研究表明：添加滤波器后，单次喷射控制策略下可有效减小喷油量波动幅度。多次喷射控制策略下，预主喷策略下，容腔体积为1 720 mm3时的主喷油量偏差幅度比容腔体积0 mm3时的主喷油量偏差幅度减小55.0%~67.9%；主后喷策略下，容腔体积为1 720 mm3时的后喷油量偏差幅度比容腔体积0 mm3时的后喷油量偏差幅度减小80.8%~82.5%。预主喷策略下，容腔体积为1 720 mm3时的主喷油量波动幅度仅比容腔体积28 000 mm3时的主喷油量波动幅度分别增大了0.2 mg、0.4 mg和0.3 mg；主后喷策略下，容腔体积为1 720 mm3时的后喷油量波动幅度仅比容腔体积28 000 mm3时的后喷油量波动幅度分别增大了0.3 mg、0.4 mg和0.7 mg。
Abstract:In order to effectively suppress the pressure fluctuation generated at the inlet of the injector， a new damping filter was used to carry out an experimental study on the pressure fluctuation control effect. The filtering effects on high-pressure tubing with longer length and smaller diameter under different vessel volumes， rail pressures and injection strategies were researched. Results indicate that the filter can significantly decrease the amplitude of pressure fluctuation under the single injection condition. Under the multiple injection control strategy， when the volume of filter chamber is 1 720 mm3， the deviation of the main injection quantity is 55.0%~67.9% less than that when the volume of filter chamber is 0 mm3 in the pre-main injection mode. When the volume of filter chamber is 1 720 mm3， the deviation of the post injection quantity is 80.8%~82.5% less than that when the volume of filter chamber is 0 mm3 in main-post injection mode， accordingly. In the pre-main injection mode， when the volume of the filter chamber is 1 720 mm3， the fluctuation amplitude of the main injection quantity is only 0.2 mg， 0.4 mg and 0.3 mg higher than that of the main injection quantity when the volume of the filter chamber is 28 000 mm3. In the main-post injection mode， when the volume of the filter chamber is 1 720 mm3， the fluctuation amplitude of the post injection quantity is only 0.3 mg， 0.4 mg and 0.7 mg higher than that of the post injection quantity when the volume of the filter chamber is 28 000 mm3.
查看全文  HTML   查看/发表评论