Improved Simulation of Transient Engine Operations at Unsteady Speed Com-bining 1-D and 3-D Modeling

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F09%3A00161278" target="_blank" >RIV/68407700:21220/09:00161278 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Improved Simulation of Transient Engine Operations at Unsteady Speed Com-bining 1-D and 3-D Modeling
Original language description
The new simulation tool consists of an iterative loop of a 3-D code in parallel to a 1-D code that is employed to simulate transient engine cycles. The 1-D code yields the basic pattern of initial and boundary conditions and the 3 D simulations at several typical engine operating points are used to crosscheck the performance as well as aid in the model calibration. A flexible regression model of the fuel burn rate and the associated ROHR has been developed in conjunction with the 3-D simulations using acombination of three added Vibe functions. The emissions at the end of the expansion stroke are also predicted. The parameters of the Vibe functions and emissions are found via non-linear regression based on state parameters such as engine speed, relative A/F ratio, EGR/rest gas contents, injection timings, etc. This improved model has been used to study the speed-load response of a generator set driven by a medium-speed diesel engine.
Czech name
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Czech description
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Project
<a href="/en/project/1M0568" target="_blank" >1M0568: Josef Božek Research Center of Engine and Automotive Technology II</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2009
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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