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Eckert, P.; Rakowski, Sebastian

doi:10.1007/978-3-658-23557-4_35

Cited by 2 publications

(1 citation statement)

References 33 publications

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“…Since aromatics are precursors for the formation of particulate matter during engine combustion, particle formation and emission can be significantly reduced by avoiding them. On the other hand, aromatics contribute significantly to a high fuel performance, e.g., in terms of high octane numbers and densities [5]. Especially for gasoline, these properties are important to meet the corresponding standard DIN EN 228 [6].…”

Section: Introductionmentioning

confidence: 99%

(Co‐)Oligomerization of Olefins to Hydrocarbon Fuels: Influence of Feed Composition and Pressure

Fuchs

Arnold

Sauer

2023

Chemie Ingenieur Technik

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The co‐oligomerization of methanol‐based C2‐4 olefins on a heterogeneous nickel silica‐alumina catalyst enables the production of fuel‐range hydrocarbons. The objective of this study was the production of gasoline and jet fuel, which was achieved with an overall selectivity of above 90 %. The influence of olefin feed composition and pressure was investigated at 120 °C. By employing olefin mixtures instead of one single olefin, selectivity to specific chain lengths decreases and quantities of the individual products converge. An increase of olefin pressure from 16 to 32 bar slightly shifts the liquid products to shorter oligomers and raises feed conversion.

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Section: Introductionmentioning

confidence: 99%

(Co‐)Oligomerization of Olefins to Hydrocarbon Fuels: Influence of Feed Composition and Pressure

Fuchs

Arnold

Sauer

2023

Chemie Ingenieur Technik

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Experimental Investigation of Internal and External EGR Effects on a CNG-OME Dual-Fuel Engine

Jost,

Guenthner,

Weigel

2024

SAE Technical Paper Series

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<div class="section abstract"><div class="htmlview paragraph">Dual-fuel engines powered by renewable fuels provide a potential solution for reducing the carbon footprint and emissions of transportation, contributing to the goal of achieving sustainable mobility. The investigation presented in the following uses a dual-fuel engine concept running on biogas (referred to as CNG in this paper) and the e-fuel polyoxymethylene dimethyl ether (OME). The current study focuses on the effects of exhaust gas rebreathing and external exhaust gas recirculation (EGR) on emissions and brake thermal efficiency (BTE).</div><div class="htmlview paragraph">A four-cylinder heavy-duty engine converted to dual-fuel operation was used to conduct the engine tests at a load point of 1600 min<sup>-1</sup> and 9.8 bar brake mean effective pressure (BMEP). The respective shares of high reactivity fuel (HRF, here: OME) and low reactivity fuel (LRF, here: CNG) were varied, as were the external and internal EGR rates and their combinations. CNG was injected into the intake manifold to create a homogeneous air-fuel mixture, while OME was introduced as a pilot injection directly into the combustion chamber. Results showed an increase in total hydrocarbons (THC) and carbon monoxide (CO) emissions, while nitric oxide (NOx) emissions were significantly reduced compared to diesel operation. Soot emissions were completely mitigated due to the absence of direct carbon bonds in both CNG and OME. For the initial stage of the study, exhaust gas rebreathing was implemented on only one exhaust valve through a second event lift. For the second part of the study, the second event lift was also installed on the other exhaust valve. At a substitution rate of 50 % CNG, THC emissions could be lowered by up to 35 %, CO emissions by up to 50 % and NOx emissions by up to 18 % with the use of internal EGR. The combination of internal and external EGR reduced emissions even further.</div></div>

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Cited by 2 publications

References 33 publications

(Co‐)Oligomerization of Olefins to Hydrocarbon Fuels: Influence of Feed Composition and Pressure

(Co‐)Oligomerization of Olefins to Hydrocarbon Fuels: Influence of Feed Composition and Pressure

Experimental Investigation of Internal and External EGR Effects on a CNG-OME Dual-Fuel Engine

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