Hydrogen assisted diesel combustion

Lilik, Gregory K.; Zhang, Hedan; Herreros, José Martín; Haworth, Daniel C.; Boehman, André L.

doi:10.1016/j.ijhydene.2010.01.105

Cited by 152 publications

(48 citation statements)

References 33 publications

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“…Furthermore, at similar high hydrogen substitution levels, several other studies have reported an increase in PM emissions. 72,114 These observations have been attributed to the displacement of significant amounts of intake air (thereby reducing the incylinder oxygen concentration), which causes a reduction in rates of fuel oxidation, hence resulting in an increase in PM emissions. 65,72,114 …”

Section: Particulate Mattermentioning

confidence: 99%

An overview of the effects of fuel molecular structure on the combustion and emissions characteristics of compression ignition engines

Hellier

Talibi

Eveleigh

et al. 2017

Proceedings of the Institution of Mechanical Engineers, Part D:

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Future fuels for compression ignition engines will be required both to reduce the anthropogenic carbon dioxide emissions from fossil sources and to contribute to the reductions in the exhaust levels of pollutants, such as nitrogen oxides and particulate matter. Via various processes of biological, chemical and physical conversion, feedstocks such as lignocellulosic biomass and photosynthetic micro-organisms will yield a wide variety of potential fuel molecules. Furthermore, modification of the production processes may allow the targeted manufacture of fuels of specific molecular structure. This paper therefore presents an overview of the effects of fuel molecular structure on the combustion and emissions characteristics of compression ignition engines, highlighting in particular the submolecular features common to a variety of potential fuels. An increase in the straight-chain length of the alkyl moiety reduces the duration of ignition delay, and the introduction of double bonds or branching to an alkyl moiety both increase ignition delay. The movement of a double bond towards the centre of an alkyl chain, or the addition of oxygen to a molecule, can both increase and decrease the duration of ignition delay dependent on the overall fuel structure. Nitrogen oxide emissions are primarily influenced by the duration of fuel ignition delay, but in the case of hydrogen and methane pilot-ignited premixed combustion arise only at flame temperatures sufficiently high for thermal production. An increase in aromatic ring number and physical properties such as the fuel boiling point increase particulate matter emissions at constant combustion phasing.

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Section: Particulate Mattermentioning

confidence: 99%

An overview of the effects of fuel molecular structure on the combustion and emissions characteristics of compression ignition engines

Hellier

Talibi

Eveleigh

et al. 2017

Proceedings of the Institution of Mechanical Engineers, Part D:

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show abstract

“…It was also revealed a reduction in combustion duration by increase in hydrogen addition. Emissions were reduced by advancing the spark timing, but they were increasing as the load increases [11][12][13][14][15] .…”

Section: Mixing Of Hydrogen With Cngmentioning

confidence: 99%

Effect of Compression Ratio on Performance of a Hydrogen Blended CNG-Diesel Dual Fuel Engine

Reddy¹,

Dutta²,

Reddy³

2015

J. mech. eng.

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“…To change this situation, a relative large amount of hydrogen is needed (Liew et al 2010). Hydrogen addition yields modest emission reductions with a limited penalty on engine performance (Lilik et al 2010). …”

Section: Hydrogenmentioning

confidence: 99%