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首页> 外文期刊>BioTechnology: An Indian Journal >Research on modeling and simulation of SI engine for AFR Control application
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Research on modeling and simulation of SI engine for AFR Control application

机译：用于AFR控制的SI发动机建模与仿真研究。

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Accurate AFR control with TWC is a significant method to reduce the exhaust emission of SI engines. To follow the modern model-based methodology in automotive industries, a virtual engine simulation platform have been carried out to simulate a SGMW B15 engine based on enDYNA by adding the AFR path dynamic models. Experiments and simulation results have been compared for the model validation both about the engine performance at steady state and AFR path transient response. Also a soft ECU model has been designed for the control algorithm implementation. Simulation results shows that the engine model is appropriate for simulating SI engine operated at steady and transient state, and the close-loop PID controller has better performance for suppressing the overshoot of AFR signal during transient throttle position varying. The simulation model described in this work could support the AFR control algorithm development as a proper virtual engine control objects.
机译：使用TWC进行精确的AFR控制是减少SI发动机废气排放的重要方法。为了遵循汽车行业中基于现代模型的方法，已通过添加AFR路径动态模型，使用虚拟引擎仿真平台来模拟基于enDYNA的SGMW B15发动机。为了进行模型验证，已比较了有关发动机在稳态下的性能和AFR路径瞬态响应的实验和仿真结果。还为控制算法实现设计了一个软ECU模型。仿真结果表明，该发动机模型适合于模拟在稳态和过渡状态下运行的SI发动机，并且闭环PID控制器具有更好的性能，可抑制过渡节气门位置变化时AFR信号的过冲。这项工作中描述的仿真模型可以支持将AFR控制算法开发为适当的虚拟引擎控制对象。

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