Real-Time Simulation of an Engine Model and a Vehicle Model Using Asynchronous Simulation Techniques

In order to satisfy different requirements for engine design and real-time simulation, modulization technology is used in this paper to establish the engine model for small-scale engines. The model consists of simple and complex modules of charging, torque, friction, and crankshaft dynamics, which are established in Matlab/Simulink and verified using the experimental data. Different sets of these modules can be selected for various applications. For engine design, a complex model, which consists of the wave-action charging module and the mean-value combustion module, is employed to study the effects of inlet and exhaust systems on torque output performance. For real-time simulation, different levels of complexity can be selected according to the hardware-in-the-loop requirement of the control verification.

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Applications of real-time simulation techniques for shunt active power filter design

2009 IEEE Power & Energy Society General Meeting ◽

10.1109/pes.2009.5275760 ◽

2009 ◽

Cited By ~ 2

Author(s):

Yu-Jen Liu ◽

Gary W. Chang ◽

Rong-Chin Hong ◽

Chi-Yun Chao

Keyword(s):

Real Time ◽

Filter Design ◽

Active Power Filter ◽

Active Power ◽

Shunt Active Power Filter ◽

Real Time Simulation ◽

Power Filter ◽

Simulation Techniques ◽

Time Simulation

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New Charging Model Imparting the Valve Timing for Real-Time Simulation

ASME 2009 Internal Combustion Engine Division Spring Technical Conference ◽

10.1115/ices2009-76028 ◽

2009 ◽

Cited By ~ 1

Author(s):

Yuh-Yih Wu ◽

Bo-Chiuan Chen ◽

Chieh-Han Wu ◽

Hsien-Chi Tsai

Keyword(s):

Real Time ◽

High Efficiency ◽

Volumetric Efficiency ◽

Valve Train ◽

Valve Lift ◽

Engine Control ◽

Valve Timing ◽

Real Time Simulation ◽

Engine Model ◽

Time Simulation

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. The 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.

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