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

Kód výsledku v IS VaVaI

RIV/68407700:21220/09:00161278 - isvavai.cz

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

C - Kapitola v odborné knize

CEP obor

JT - Pohon, motory a paliva

OECD FORD obor

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Projekt

1M0568: Výzkumné centrum spalovacích motorů a automobilů Josefa Božka II

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2009

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název knihy nebo sborníku

Modeling of SI and Diesel Engines 2009

ISBN

978-0-7680-2152-3

Počet stran výsledku

16

Strana od-do

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Počet stran knihy

250

Název nakladatele

SAE International

Místo vydání

Warrendale, PA 15096

Kód UT WoS kapitoly

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