高壓共軌噴油器壓力波動(dòng)與針閥響應(yīng)解耦分析
[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.
【作者單位】: 中國(guó)汽車技術(shù)研究中心數(shù)據(jù)資源中心;
【分類號(hào)】:TK423
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