Computational Models for Two Stroke Engine Brake Simulations

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F18%3A00329137" target="_blank" >RIV/68407700:21220/18:00329137 - isvavai.cz</a>

Výsledek na webu

<a href="http://fs12120.fsid.cvut.cz/softlib/2018/2S_EB_modely.zip" target="_blank" >http://fs12120.fsid.cvut.cz/softlib/2018/2S_EB_modely.zip</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Computational Models for Two Stroke Engine Brake Simulations

Popis výsledku v původním jazyce

Thermodynamic model (1-D) of a heavy duty diesel engine with fully parametric valve lift profiles (Compression Release lift, Brake Gas Recirculation lift, Rebreather lift) enabling optimization of advanced 2-stroke engine brake for maximum braking performance while keeping constraining factors within the limit. The constraining factors include: exhaust valve opening pressure in the cylinder (compression release), pressure drop on the exhaust valve, pressure drop on the intake valve, average temperature upstream of the VGT turbine, turbocharger speed, compressor surge line, piston-valve colission, maximum crank angle distance between valve lifts. The mechanical models simulate kinematics and dynamics of the OHC valve train used for 2-stroke engine brake. Models contains actuation of both exhaust valve lifts (compression release and brake gas recirculation valve lifts) and intake valve lifts (braking intake lifts). Models are used for verification of the cam shapes, designed from the thermodynamic model outputs, from a dynamic behavior point of view. Those simulations complete the process of designing the both intake and exhaust cam lobes before manufacturing the prototype.

Název v anglickém jazyce

Computational Models for Two Stroke Engine Brake Simulations

Popis výsledku anglicky

Thermodynamic model (1-D) of a heavy duty diesel engine with fully parametric valve lift profiles (Compression Release lift, Brake Gas Recirculation lift, Rebreather lift) enabling optimization of advanced 2-stroke engine brake for maximum braking performance while keeping constraining factors within the limit. The constraining factors include: exhaust valve opening pressure in the cylinder (compression release), pressure drop on the exhaust valve, pressure drop on the intake valve, average temperature upstream of the VGT turbine, turbocharger speed, compressor surge line, piston-valve colission, maximum crank angle distance between valve lifts. The mechanical models simulate kinematics and dynamics of the OHC valve train used for 2-stroke engine brake. Models contains actuation of both exhaust valve lifts (compression release and brake gas recirculation valve lifts) and intake valve lifts (braking intake lifts). Models are used for verification of the cam shapes, designed from the thermodynamic model outputs, from a dynamic behavior point of view. Those simulations complete the process of designing the both intake and exhaust cam lobes before manufacturing the prototype.

Druh

R - Software

CEP obor

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OECD FORD obor

20301 - Mechanical engineering

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

2018

Kód důvěrnosti údajů

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

Interní identifikační kód produktu

2S_EB_modely

Technické parametry

Group of computational models developed in GT-SUITE v2017 (Gamma Technologies) for two stroke engine brake simulations contains a thermodynamic and a mechanical model for cam design.

Ekonomické parametry

1 000 000 Kč

IČO vlastníka výsledku

68407700

Název vlastníka

centrum vozidel udržitelné mobility Josefa Božka