HYDROGEN USE IN A COMPRESSION IGNITION ENGINE - Potencial for Road Transport Decarbonization

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F19%3A00332256" target="_blank" >RIV/68407700:21220/19:00332256 - isvavai.cz</a>

Result on the web

<a href="https://www.hydrogendays.cz/2019/index.php?password=Download_HDs2019#download" target="_blank" >https://www.hydrogendays.cz/2019/index.php?password=Download_HDs2019#download</a>

DOI - Digital Object Identifier

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Result language

angličtina

Original language name

HYDROGEN USE IN A COMPRESSION IGNITION ENGINE - Potencial for Road Transport Decarbonization

Original language description

Combustion engines are the most widespread transportation power units all over the world. It is reasonable to consider the use of them as energy convertors for the use of hydrogen as a transportation fuel at least for the initial phase of the introduction of hydrogen into the market. The efficiency of the conversion of fuel energy to mechanical power of compression ignition engines at high load approaches that of a highly loaded fuel cell. Optimized hydrogen fuelled compression ignition engines might be one of the means for achieving transport decarbonisation targets as they were ratified in the COP21 Paris agreement. This contribution presents experimental investigations of hydrogen utilisation as a main fuel for a compression ignition engine with a pilot injection of a small quantity of diesel fuel. The experiments were performed on a single cylinder research compression ignition engine with a bore of 85 mm and piston stroke of 90 mm, coupled with an electric dynamometer. The engine was equipped with a diesel fuel direct injection common rail system. A homogeneous mixture of air and hydrogen was formed using a port fuel injection. The engine was boosted with externally driven compressor. Realistic efficiency of the fictitious exhaust turbocharger was emulated by exhaust throttling. An influence of hydrogen share on the total fuel energy was systematically investigated between the limits given by the pure diesel operation and the maximum share of hydrogen, approximately 98% by energy content. The tested hydrogen share was constrained by practical limits of poor combustion at low load (4 bar of IMEP) and by a limit of maximum pressure and preignition (up to 16 bar of IMEP) at engine speed up to 3200 rpm. It was observed that increase in hydrogen share reduces emissions of particles and CO2 proportionally to the decrease in the carbon content in the fuel. Engine-out NOx emissions remained more or less the same for both diesel and hydrogen fuelling....

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

<a href="/en/project/LO1311" target="_blank" >LO1311: Development of Vehicle Centre of Sustainable Mobility</a><br>

Continuities

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

Publication year

2019

Confidentiality

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