NEW CHARGING MODEL IMPARTING THE VALVE TIMING FOR REAL-TIME SIMULATION

机译：新的充电模型可实时进行阀门定时仿真

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Engine Control Units (ECUs) are developed to manage the variable conditions in an operating engine, such as fuel injection, spark ignition, and valve timing, for achieving the goal of high performance, high efficiency and low emissions. Typically, an engine model is necessary for developing the engine control system. Most of the engine models for engine control are mean value engine model (MVEM) based on empirical volumetric efficiency to calculate the intake air flow rate. This kind of model is not able to simulate the changes of the valve, such as valve lift and valve timing. It can not be used for the engine with variable valve train (VVT). Therefore, a new method, able to inform the valve changing, is applied to adapt the new demand of engine models.rnThe proposed engine model is similar to most current models except the charging system. The charging model is developed by using filling-and-emptying model to simulate the air exchange in the engine, including the intake and exhaust air dynamics. The flow through the valves is calculated according to the pressure drop between the cylinder and the manifold, the flow area of the valve opening and its flow coefficient. The other important feature of the proposed engine model is the capability of real time simulation. The model is verified by experimental volumetric efficiency and engine torque. Finally, a HIL (Hardware in the Loop) simulation is performed to confirm the real time simulation.

机译：为了实现高性能，高效率和低排放的目标，开发了发动机控制单元（ECU）以管理运行中的发动机中的可变条件，例如燃料喷射，火花点火和气门正时。通常，发动机模型对于开发发动机控制系统是必需的。用于发动机控制的大多数发动机模型都是基于经验体积效率来计算进气流量的平均值发动机模型（MVEM）。这种模型无法模拟气门的变化，例如气门升程和气门正时。不能用于可变气门机构（VVT）的发动机。因此，采用一种能够通知气门变化的新方法来适应发动机模型的新需求。建议的发动机模型除了充气系统外，与大多数当前模型相似。通过使用充气和排空模型来模拟发动机中的空气交换（包括进气和排气动力学）来开发充气模型。通过阀的流量是根据气缸和歧管之间的压降，阀开口的流量面积及其流量系数计算的。所提出的发动机模型的另一个重要特征是实时仿真的能力。通过实验的容积效率和发动机扭矩验证了该模型。最后，执行HIL（循环中的硬件）仿真以确认实时仿真。

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来源
《Proceedings of the 2009 spring technical conference of the ASME Internal Combustion Engine Division》|2009年|P.431-438|共8页
会议地点 Milwaukee WI(US);Milwaukee WI(US)
作者
Yuh-Yih Wu; Bo-Chiuan Chen; Chieh-Han Wu; Hsien-Chi Tsai;
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作者单位

National Taipei University of Technology Taipei, Taiwan;

rnNational Taipei University of Technology Taipei, Taiwan;

rnNational Taipei University of Technology Taipei, Taiwan;

rnNational Taipei University of Technology Taipei, Taiwan;

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NEW CHARGING MODEL IMPARTING THE VALVE TIMING FOR REAL-TIME SIMULATION

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