高压共轨喷油器压力波动与针阀响应解耦分析
发布时间：2018-09-17 18:08
【摘要】：多次喷射过程中,不同喷射之间的相互影响导致循环喷油量的控制难度增大。建立了高压共轨系统的AMESim仿真模型,通过数值仿真和试验测试相结合的方法,揭示了喷油器内部压力波动和针阀开启阶段动作响应的强耦合作用是导致主喷油量随喷射间隔波动的根本原因,当主喷油量基准值为60.0mm3时,其波动量最大可达3.6mm3。建立了共轨系统的无阻尼LC液力系统模型,通过对模型的分析,针对强耦合作用提出了减小喷油器内部油道长径比和盛油槽容积的解耦方法。对解耦方法的仿真试验验证表明,采用解耦方法后压力波动和针阀响应的耦合程度降低53%。
[Abstract]:In the process of multiple injection, the interaction between different injection leads to the difficulty of controlling the fuel injection. The AMESim simulation model of high voltage common rail system is established, and the method of numerical simulation and test is combined. It is revealed that the strong coupling between the pressure fluctuation inside the injector and the action response of the needle valve in the opening stage is the fundamental cause of the main fuel injection volume fluctuating with the injection interval. When the reference value of the main fuel injection quantity is 60.0mm3, the maximum fluctuation can reach 3.6 mm ~ 3. The undamped LC hydraulic system model of common rail system is established. Based on the analysis of the model, a decoupling method is proposed to reduce the length / diameter ratio and tank volume in the injector. The simulation results of decoupling method show that the coupling degree of pressure fluctuation and needle valve response is reduced by 53% after the decoupling method is adopted.
【作者单位】： 中国汽车技术研究中心数据资源中心;
【分类号】：TK423
本文编号：2246704
[Abstract]:In the process of multiple injection, the interaction between different injection leads to the difficulty of controlling the fuel injection. The AMESim simulation model of high voltage common rail system is established, and the method of numerical simulation and test is combined. It is revealed that the strong coupling between the pressure fluctuation inside the injector and the action response of the needle valve in the opening stage is the fundamental cause of the main fuel injection volume fluctuating with the injection interval. When the reference value of the main fuel injection quantity is 60.0mm3, the maximum fluctuation can reach 3.6 mm ~ 3. The undamped LC hydraulic system model of common rail system is established. Based on the analysis of the model, a decoupling method is proposed to reduce the length / diameter ratio and tank volume in the injector. The simulation results of decoupling method show that the coupling degree of pressure fluctuation and needle valve response is reduced by 53% after the decoupling method is adopted.
【作者单位】： 中国汽车技术研究中心数据资源中心;
【分类号】：TK423
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6 曹福南;尷屸孝;;柴油机喷油器针阀付等截面流道的研究[J];大连铁道学院学报;1982年03期
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