Optimization of SCRE operation (gasoline mode only)

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F22%3A00365380" target="_blank" >RIV/68407700:21220/22:00365380 - isvavai.cz</a>

Result on the web

<a href="http://fs12120.fsid.cvut.cz/softlib/2022/FIRE_SCRE_gasoline_ICE.zip" target="_blank" >http://fs12120.fsid.cvut.cz/softlib/2022/FIRE_SCRE_gasoline_ICE.zip</a>

DOI - Digital Object Identifier

—

Result language

angličtina

Original language name

Optimization of SCRE operation (gasoline mode only)

Original language description

The SW is supposed to enable to predict the details of thermodynamics of the target ICEs using both 3-D CFD and 0-D/1-D CFD. Most of the data/results are based on 3-D CFD and the main focus is put on combustion modelling while using LES approach (turbulence model capable of predicting CCV effects). The standard model is based on turbulent flame front propagation (LES ECFM-3Z). Different combustion modes are modeled and compared while considering gasoline fuel only with experimental data (classical spark ignition, turbulent flame jet based on passive pre-chamber operation). This result is purely focused on gasoline operation (as a main fuel, which enters the main combustion chamber) – however, different fuels (hydrogen, CNG) can be introduced into active pre-chamber. This work is closely related to 1-WP03-011. Extensive experimental campaign was performed to test different operating conditions (load, speed, fuel) while considering both classical spark and pre-chamber one in passive mode (this one allows for lean operation). This was supported by detailed 3-D CFD simulations to get better understanding of important in-cylinder phenomena. The active pre-chamber was designed, manufactured and assembled – the initial runs were performed to verify reliable operation. The active pre-chamber operation is expected to enable very lean operation, hence to achieve the goal of advanced combustion mode with high thermal efficiency and very low pollutant formation (NOx). The 3-D CFD data are analyzed by in-house SW tools and design modifications are proposed.

Czech name

—

Czech description

—

Type

R - Software

CEP classification

—

OECD FORD branch

20301 - Mechanical engineering

Project

<a href="/en/project/TN01000026" target="_blank" >TN01000026: Josef Bozek National Center of Competence for Surface Vehicles</a><br>

Continuities

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

Publication year

2022

Confidentiality

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

Internal product ID

FIRE_SCRE_gasoline_ICE

Technical parameters

Tento autorizovaný SW vznikl v rámci aktivit NCK1: JOBNAC. Rozsáhlá databáze výsledků 3-D CFD LES simulací. Databáze je tvořena výstupními soubory programu AVL FIRE (obecný 3-D CFD nástroj; Linux/Windows). Byly propočteny různé pracovní body a různé konfigurace motoru. Důraz je kladen na modelování turbulence (LES) a modely s velkou schopností predikce bez nutnosti výrazné kalibrace. Zpracování detailních 3-D dat probíha pomocí vlastních SW nástrojů. Provázano na 0-D/1-D CFD nástroje.

Economical parameters

2000000,-Kc (odhadovana komercni cena ASW, pokud by si to zakaznik zadal jako HS)

Owner IČO

68407700

Owner name

České vysoké učení technické v Praze v Praze, fakulta strojní