Analysis and Control of Nonlinear Process Systems

Hangos, Katalin M.; Bokor, József; Szederkényi, Gábor

doi:10.1007/b97665

Cited by 32 publications

(4 citation statements)

References 59 publications

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“…In Table 3 the RMS errors can be seen for all operation modes. A typical aim for control oriented models is to achieve the error below 10% [25]. As it can be seen all of the RMS errors are below 6% i.e.…”

Section: Evaluation Of Validationmentioning

confidence: 99%

“…In this case the external performance (speed, torque, fuel consumption) of the engine is not a result of the model, it is an incoming signal. Control oriented models should have been simplified to a few state variables to reach fast numerical calculation speed and to able to use them in control theory [25].…”

Section: Air Path System Descriptionmentioning

confidence: 99%

“…The final model will be validated with the RMS error between the simulation and the engine dyno measurements. The aim is to achieve the RMS error below 10% [25].…”

Section: Air Path System Descriptionmentioning

confidence: 99%

“…For controlling aims a natural form for the system representation is the state space form. The model conversion to state space form is based on [25]. Due to its nonlinearity the general form of the model is given as: where: x(t) means the state vector which contains the intake manifold pressure, the exhaust manifold pressure, the pressure downstream the turbine, the pressure downstream the first exhaust brake and the compressor power.…”

Section: System Model In State Space Formmentioning

confidence: 99%

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Model development and experimental validation of an exhaust brake supported dual loop exhaust gas recirculation on a medium duty Diesel engine

Nyerges

Zöldy

2020

mech

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Due to the new European emission norms internal combustion engines have to comply stricter rules. The new norms contain new requirements that were not included in previous regulations for example the decreased temperature of the cold start or the real driving emission part. The emission cycles for passenger vehicles are completely news, the stricter emission norms for commercial vehicles will follow them within a few years. Despite the increasing spread of alternative transmission systems in road transport Diesel engines are going to be remain in commercial vehicles in the next decades due to their good torque and fuel consumption performance. The emission of Diesel engines can be kept low by several way: by the modification of combustion processes, or by exhaust gas after treatment. To comply future regulations both of them seems to be necessary. By exhaust gas recirculation systems alternative Diesel combustion processes can be realized which can provide lower nitrogen-oxide emission and in several operation points also lower fuel consumption. Exhaust gas recirculation systems also can support the thermal management of a Diesel engine. To utilize the advantages of the recirculated exhaust gases a complex system is necessary to get a freedom in control possibilities: duel loop exhaust gas recirculated systems supplemented with supporter valves on the intake or on the exhaust side. In this paper a pressure and mass flow rate based control oriented engine model will be presented which contains high and low pressure exhaust gas recirculation systems and both of them are supported by exhaust brakes. The model considers four balance volumes and it has five state variables. The model is validated by an engine dyno measurements on a medium duty Diesel engine.

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Section: Evaluation Of Validationmentioning

confidence: 99%

Section: Air Path System Descriptionmentioning

confidence: 99%

“…The final model will be validated with the RMS error between the simulation and the engine dyno measurements. The aim is to achieve the RMS error below 10% [25].…”

Section: Air Path System Descriptionmentioning

confidence: 99%

Section: System Model In State Space Formmentioning

confidence: 99%

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