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An experimental and modeling study to investigate effects of different injection parameters on a direct injection HCCI combustion fueled with ethanol-gasoline fuel blends

机译：实验和模型研究，研究不同喷射参数对乙醇汽油燃料混合燃料直接喷射HCCI燃烧的影响

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摘要

In this study, Stochastic Reactor Model (SRM) was used to simulate a direct injection homogenous charge compression ignition (DI-HCCI) engine fueled with ethanol-gasoline blends by two stage direct injection (TSDI) strategies. Performance of the DI-HCCI engine was examined at constant engine speed and high equivalence ratio conditions. TSDI strategies were applied during the intake stroke (first injections) and at the end of the compression stroke (second injections) by using different injection ratios (IR) of E10 and E20 blends. SRM results were compared and validated with the experimental results. Experimental and SRM results showed that the first injection variation does not have significant effect on controlling HCCI combustion while variation of the second injection timing and IR change peak pressure significantly. Therefore, this strategy can be used to control the HCCI combustion.
机译：在这项研究中，随机反应堆模型（SRM）用于通过两阶段直接喷射（TSDI）策略模拟以乙醇-汽油混合物为燃料的直接喷射均质充量压缩点火（DI-HCCI）发动机。在恒定的发动机转速和高当量比的条件下检查了DI-HCCI发动机的性能。通过使用E10和E20混合气的不同喷射比（IR），在进气冲程（第一次喷射）和压缩冲程结束（第二次喷射）中采用了TSDI策略。 SRM结果进行了比较，并与实验结果进行了验证。实验和SRM结果表明，第一次喷射变化对控制HCCI燃烧没有显着影响，而第二次喷射正时变化和IR显着改变了峰值压力。因此，该策略可用于控制HCCI燃烧。

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