Efficient use of hydrogen in a combustion engine

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F17%3A00320436" target="_blank" >RIV/68407700:21220/17:00320436 - isvavai.cz</a>

Result on the web

<a href="http://whtcprague2017.cz/files/WHTC2017-Programme_and_Abstract_Book.pdf" target="_blank" >http://whtcprague2017.cz/files/WHTC2017-Programme_and_Abstract_Book.pdf</a>

DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Efficient use of hydrogen in a combustion engine

Original language description

An internal combustion engine is not the best energy converter for exploitation of hydrogen to produce mechanical power. However the combustion engines are still the most widespread transportation power units all over the world and it is reasonable to use them at least for the initial phase of introduction of hydrogen into the transportation fuel market. There was and still is a certain effort dedicated to establish exploitation of hydrogen as an engine fuel either alone or blended with another gaseous fuel. Mixture of methane with approx. 20% of hydrogen (by volume) well known as “Hythane” is one example. With the conventional spark ignition the expected improvement of engine efficiency, derived from hydrogen high burning velocity was not confirmed. This work investigates the use of hydrogen in the combustion engine equipped with an advanced ignition system with a scavenged pre-chamber. The engine with the pre-chamber fueled with natural gas shows at low load significant improvement of indicated efficiency and at the same time very low content of nitrogen oxides in raw exhaust gas. Engine efficiency was improved additionally when the pre-chamber was scavenged and filled with hydrogen still maintaining low NOx content in raw exhaust gas. In the article experimental results are presented as they were obtained: - with the conventional gas engine fueled by natural gas - with the conventional gas engine fueled by hydrogen – natural gas blend - with the pre-chamber engine fed by lean mixture of natural gas and air through intake manifold with delivery of natural gas into the scavenged pre-chamber - with the pre-chamber engine fed by lean mixture of natural gas and air through intake manifold with delivery of hydrogen into the pre-chamber

Czech name

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Czech description

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Type

O - Miscellaneous

CEP classification

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OECD FORD branch

20301 - Mechanical engineering

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

2017

Confidentiality

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