A Simple Physical Model of ICE Mechanical Losses

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F11%3A00189532" target="_blank" >RIV/68407700:21220/11:00189532 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

A Simple Physical Model of ICE Mechanical Losses

Popis výsledku v původním jazyce

The aim of the current paper is describing the development and experimental calibration of the physical cranktrain model for FMEP prediction, based on simplified phenomenological model of mixed friction. The model uses simply defined shapes of Stribeck curves (friction coefficient) in dependence on Sommerfeld number, i.e., on effective sliding velocity, oil viscosity, dimension scaling factor and the normal force load. The piston rings are loaded by pre-tension and by pressure difference at external andinternal surfaces. The instantaneous pressures at ring-pack are simulated using GT Power modules. Forces and torques in the cranktrain are calculated iteratively taking into account the additional friction effects and the non-uniformity of crank speed,reflected by inertia forces. The model has been calibrated using data from engine tests at different loads, speeds and oil/cooling water temperature levels. The results show the predictive accuracy better than four percent considering mec

Název v anglickém jazyce

A Simple Physical Model of ICE Mechanical Losses

Popis výsledku anglicky

The aim of the current paper is describing the development and experimental calibration of the physical cranktrain model for FMEP prediction, based on simplified phenomenological model of mixed friction. The model uses simply defined shapes of Stribeck curves (friction coefficient) in dependence on Sommerfeld number, i.e., on effective sliding velocity, oil viscosity, dimension scaling factor and the normal force load. The piston rings are loaded by pre-tension and by pressure difference at external andinternal surfaces. The instantaneous pressures at ring-pack are simulated using GT Power modules. Forces and torques in the cranktrain are calculated iteratively taking into account the additional friction effects and the non-uniformity of crank speed,reflected by inertia forces. The model has been calibrated using data from engine tests at different loads, speeds and oil/cooling water temperature levels. The results show the predictive accuracy better than four percent considering mec

Druh

C - Kapitola v odborné knize

CEP obor

JT - Pohon, motory a paliva

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

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

Rok uplatnění

2011

Kód důvěrnosti údajů

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

Název knihy nebo sborníku

SAE Technical Collection - Modeling of SI and Diesel Engines, Coll-TP-00156

ISBN

978-0-7680-4753-0

Počet stran výsledku

18

Strana od-do

13-30

Počet stran knihy

225

Název nakladatele

SAE International

Místo vydání

Warrendale, PA 15096

Kód UT WoS kapitoly

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