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首页> 外文OA文献 >Engine modelling for virtual mapping. Development of a physics based cycle-by-cycle virtual engine that can be used for cyclic engine mapping applications, engine flow modelling, ECU calibration, real-time engine control or vehicle simulation studies.
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Engine modelling for virtual mapping. Development of a physics based cycle-by-cycle virtual engine that can be used for cyclic engine mapping applications, engine flow modelling, ECU calibration, real-time engine control or vehicle simulation studies.

机译：虚拟映射的引擎建模。开发基于物理的逐周期虚拟引擎，该引擎可用于循环引擎映射应用程序，引擎流建模，ECU校准，实时引擎控制或车辆仿真研究。

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After undergoing a study about current engine modelling and mapping approaches as welludas the engine modelling requirements for different applications, a major problem found toudbe present is the extensive and time consuming mapping procedure that every engine hasudto go through so that all control parameters can be derived from experimental data. Toudimprove this, a cycle-by-cycle modelling approach has been chosen to mathematicallyudrepresent reciprocating engines starting by a complete dynamics crankshaft mechanismudmodel which forms the base of the complete engine model. This system is modelled takingudinto account the possibility of a piston pin offset on the mechanism. The derived Valvetrainudmodel is capable of representing a variable valve lift and phasing Valvetrain which can beudused while modelling most modern engines. A butterfly type throttle area model is derivedudas well as its rate of change which is believed to be a key variable for transient engineudcontrol. In addition, an approximation throttle model is formulated aiming at real-timeudapplications. Furthermore, the engine inertia is presented as a mathematical model able toudbe used for any engine. A spark ignition engine simulation (SIES) framework was developedudin MATLAB SIMULINK to form the base of a complete high fidelity cycle-by-cycle simulationudmodel with its major target to provide an environment for virtual engine mappingudprocedures. Some experimental measurements from an actual engine are still required toudparameterise the model, which is the reason an engine mapping (EngMap) framework hasudbeen developed in LabVIEW, It is shown that all the moving engine components can beudrepresented by a single cyclic variable which can be used for flow model development.
机译：在研究了当前的引擎建模和映射方法以及对不同应用程序的引擎建模要求之后，发现的主要问题是每个引擎都必须经历大量且耗时的映射过程，因此所有引擎控制参数可以从实验数据中得出。为了对此进行改进，已选择了逐周期建模方法，以数学方法从完整的动力曲轴机构 udmodel开始的方式来表示往复式发动机，该模型构成了完整发动机模型的基础。该系统的建模考虑了机构上活塞销偏移的可能性。派生的Valvetrain udmodel能够表示可变的气门升程和定相的Valvetrain，可在对大多数现代发动机进行建模时使用。导出蝶型节气门面积模型及其变化率，该变化率被认为是瞬态发动机 udcontrol的关键变量。另外，针对实时 ud应用制定了近似节流模型。此外，发动机惯性表示为能够用于任何发动机的数学模型。开发了火花点火引擎仿真（SIES）框架 udin MATLAB SIMULINK，以形成完整的高保真逐周期仿真 udmodel的基础，其主要目标是为虚拟引擎映射 udprocedure提供环境。对该模型进行参数化仍需要对实际发动机进行一些实验测量，这就是在LabVIEW中开发发动机映射（EngMap）框架的原因。它表明，所有运动的发动机组件都可以用一个来表示。循环变量，可用于流模型开发。

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    Pezouvanis Antonios;

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  • 年度 2009
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