Scavenged Pre-Chamber on a Gas Engine for Light Duty Truck

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F16%3A00306635" target="_blank" >RIV/68407700:21220/16:00306635 - isvavai.cz</a>

Result on the web

<a href="https://proceedings.asmedigitalcollection.asme.org/proceeding.aspx?articleID=2590000" target="_blank" >https://proceedings.asmedigitalcollection.asme.org/proceeding.aspx?articleID=2590000</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1115/ICEF2016-9423" target="_blank" >10.1115/ICEF2016-9423</a>

Result language

angličtina

Original language name

Scavenged Pre-Chamber on a Gas Engine for Light Duty Truck

Original language description

This work presents an experimental investigation of advanced combustion of extremely lean natural gas / air mixture in a gas fueled automotive engine with a scavenged pre-chamber. The pre-chamber, which was designed and manufactured in-house, is scavenged with natural gas and is installed into a modified cylinder head of a gas fueled engine for a light duty truck. For initial pre-chamber ignition tests and optimizations, the engine is modified into a single cylinder one. The pre-chamber is equipped with a spark plug, fuel supply and a miniature pressure transducer. This arrangement allows a simultaneous crank angle resolved pressure measurement in the pre-chamber and in the main combustion chamber and provides important validation data for computational fluid dynamics (CFD) simulations. The results of the tests and initial optimizations show that the pre-chamber engine is able to operate within a significantly wider range of mixture composition than the conventional spark ignition engine. Full load operation of the pre-chamber engine is feasible with stoichiometric mixture (compatible with a three-way catalyst), without excessive thermal loading of components. At low load operation, the results show low NOx emissions with a high potential to fulfil current and future NOx limits without lean NOx exhaust gas after-treatment. The scavenged pre-chamber helps to increase the combustion rate mainly in the initial phase of combustion. However, significant unburned hydrocarbons emissions due to incomplete combustion need further optimizations. Thermal efficiency of lean operation of the engine with the pre-chamber compared to the conventional spark ignition system operated in stoichiometric conditions shows approximately 13% improvement.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

JT - Propulsion, engines and fuels

OECD FORD branch

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Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

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

Publication year

2016

Confidentiality

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

Article name in the collection

ASME 2016 Internal Combustion Engine Fall Technical Conference (ICEF2016)

ISBN

978-0-7918-5050-3

ISSN

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e-ISSN

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Number of pages

11

Pages from-to

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Publisher name

American Society of Mechanical Engineers - ASME

Place of publication

New York

Event location

Greenville, South Carolina, USA

Event date

Oct 9, 2016

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

000392464100036