Experimental investigation of Miller cycle combustion technology with water injection

Neumann, Nils Robert; Freisinger, Normann; Vent, Guido; Seeger, Thomas

doi:10.1007/978-3-658-25939-6_50

Cited by 5 publications

(5 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This means that the evaporation enthalpy of water is more than five times greater, than that of gasoline. However, the use of water also has disadvantages, such as wall humidification, it can freeze in cold operation climates and it has a higher surface tension than gasoline (Neumann et al, 2019).…”

Section: Water Injectionmentioning

confidence: 99%

“…Because wall wetting cools the components instead of the mixture, it degrades the efficiency of water injection. Injection into the intake manifold normally cools the intake air, while injection into the intake port and into the combustion chamber (direct injection) removes heat from the combustion chamber (Hermann et al, 2019;Neumann et al, 2019).…”

Section: Water Injectionmentioning

confidence: 99%

“…Simulation results, shown in Fig. 17, compare premixed direct injection and pure water direct injection based on the (Neumann et al, 2019) compression end temperatures in the combustion chamber. In all cases, water injection resulted in a decrease in temperature, but the highest temperature decrease was obtained through premixed direct injection (Hermann et al, 2019;Neumann et al, 2019).…”

Section: Water Injectionmentioning

confidence: 99%

“…Water injection also slightly reduces CO emissions. Though, HC, and particulate emission increase significantly with water volume flow especially with multi-direct water injections (Neumann et al, 2019).…”

Section: Water Injectionmentioning

confidence: 99%

“…17 Compression End Temperatures for water injection concepts (Hermann et al, 2019) Fig. 18 The effect of water injection concepts on emissions (Neumann et al, 2019) a high score, so this method is also beneficial. The use of intake manifold (plenum) injection is not recommended (Hermann et al, 2019).…”

Section: Water Injectionmentioning

confidence: 99%

See 4 more Smart Citations

Investigation of Possibilities of λ = 1 Full Load Operation for Gasoline Engines in the Light of Future Emission Regulation

Szabados

Szűcs

Hézer

et al. 2022

Period. Polytech. Transp. Eng.

View full text Add to dashboard Cite

To date, huge amounts of money have been invested in the development of internal combustion engines to reach the current level of technology. High specific power and good thermal efficiency have been achieved, thanks to which, internal combustion engines are now widely used. However, the driving force behind the developments is no longer the high performance, but the compliance with strict emission standards. Future emissions regulation, namely Euro 7, will be challenging for engine and vehicle manufacturers. One possible technical solution may be to use a stoichiometric air-fuel mixture on the entire engine map to meet the requirements of the Euro 7 emission standard. This article analyzes the change in Euro regulations in the light of Euro 7, as well as the theoretical background of the λ = 1 operation. Several technical possibilities to achieve the stoichiometric ratio, such as e.g. water injection or variable compression ratio are presented.

show abstract

Section: Water Injectionmentioning

confidence: 99%

Section: Water Injectionmentioning

confidence: 99%

Section: Water Injectionmentioning

confidence: 99%

Section: Water Injectionmentioning

confidence: 99%

Section: Water Injectionmentioning

confidence: 99%

See 3 more Smart Citations

Investigation of Possibilities of λ = 1 Full Load Operation for Gasoline Engines in the Light of Future Emission Regulation

Szabados

Szűcs

Hézer

et al. 2022

Period. Polytech. Transp. Eng.

View full text Add to dashboard Cite

show abstract

Zero-dimensional turbulence modeling of a spark ignition engine in a Miller cycle « Dethrottling » approach using a variable valve timing system

Perceau

Guibert

Guilain

2021

Applied Thermal Engineering

View full text Add to dashboard Cite

Review of Vehicle Engine Efficiency and Emissions

Joshi¹

2020

SAE Int. J. Adv. & Curr. Prac. in Mobility

124

View full text Add to dashboard Cite

<div class="section abstract"><div class="htmlview paragraph">This review covers some of the major advances pertaining to reducing tailpipe emissions of greenhouse gases and criteria pollutants. Discussed are both new and upcoming regulations, and technologies being developed for improving engines and after-treatment systems.</div><div class="htmlview paragraph">There is clearly a focus on reducing greenhouse gas emissions in major countries, implemented through ambitious CO<sub>2</sub> and electrification targets. Several mature IC engine (ICE) technologies are reviewed which promise to deliver double digit reductions in CO<sub>2</sub> emissions. We cover some of these in detail, including gasoline compression ignition, pre-chamber combustion, water injection, and cylinder deactivation. Electrification of the powertrain and synergistic gains with advanced engine technologies are examined. The case is made for the need for cradle-to-grave analyses when evaluating various powertrain choices, and highlight the role hybrids can play in achieving significant and immediate CO<sub>2</sub> reductions. For the first time, also briefly discussed are the role of advanced fuels and their potential for improving emissions.</div><div class="htmlview paragraph">On criteria pollutants, the focus remains on reducing NOx and particulates. California is leading the charge on an omnibus rulemaking for heavy-duty trucks, targeting a 90% reduction in NOx emissions, and elements of the proposal are discussed. The challenge is to achieve this reduction without affecting CO<sub>2</sub> emissions. Various studies are underway and technological pathways are being proposed and we cover the leading concepts. These include close-coupled SCR with dual dosing, innovative solutions for low temperature urea dosing, cylinder deactivation, advanced combustion techniques, electrification and natural gas engines.</div><div class="htmlview paragraph">For light-duty vehicles, real-world driving emission (RDE) norms seem to be addressing the discrepancy between lab and on-road NOx emissions, and the relevant data are discussed. Discussions are ongoing for post Euro-6 light duty regulations, and both the possible regulatory changes as well as after-treatment system developments are covered. A major focus will remain on reducing cold-start emissions and studies for both diesel and gasoline engines are reviewed.</div><div class="htmlview paragraph">Particle number standards in Europe and China have enforced gasoline particulate filters (GPFs) in those markets, and improvements in that technology are summarized. Filtration efficiency requirements are expected to increase with further tightening of regulations, and GPFs are also expected to be required for port fuel injected vehicles in the future.</div></div>

show abstract

Experimental investigation of Miller cycle combustion technology with water injection

Cited by 5 publications

References 1 publication

Investigation of Possibilities of λ = 1 Full Load Operation for Gasoline Engines in the Light of Future Emission Regulation

Investigation of Possibilities of λ = 1 Full Load Operation for Gasoline Engines in the Light of Future Emission Regulation

Zero-dimensional turbulence modeling of a spark ignition engine in a Miller cycle « Dethrottling » approach using a variable valve timing system

Review of Vehicle Engine Efficiency and Emissions

Contact Info

Product

Resources

About