Searched for: subject:"Fuels"
(1 - 20 of 146)

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Tosti, L. (author), van Zomeren, A. (author), Pels, J.R. (author), Comans, R.N.J. (author)
Purpose: This study evaluates the potential of biomass ash as raw clinker material and the influence of biomass feedstock and thermal conversion technology on biomass ash properties. Methods: A set of criteria for biomass feedstock and ash properties (i.e. CaO/SiO2 ratio and burnability) are established. A large dataset was collected and the...
article 2021
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Luo, X. (author), Grossbichler, M. (author), Waschl, H. (author), Donkers, M.C.F. (author), de Jager, B. (author), Willems, F.P.T. (author)
When controlled in an open-loop fashion, both stationary and dynamical diesel engine performance can deteriorate due to disturbances. Although cycle-to-cycle fuel injection control has the potential of reducing the performance degradation by manipulating the fueling profile in real time, this potential has not been thoroughly studied. This is...
article 2021
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Usmani, O.A. (author), de Wilde, H. (author)
The impact of using renewable fuels means multiplying fuel cost by a factor 2-6. The aim of this document is to illustrate how large the impact of replacing fossil fuels with renewable ones is in the aviation sector.
report 2021
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de Wilde, H. (author)
Goal: Provide substantiation for the extra costs of biokerosene and synthetic kerosene, compared to kerosene from fossil origin that we use in the article on aviation on energy.nl, supported by numbers from authoritative sources.
other 2021
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Willems, R. (author), Willems, F. (author), Simpson, T. (author), Albrecht, B. (author), Deen, N. (author), Somers, B. (author)
CO2 regulations on heavy-duty transport are introduced in essentially all markets within the next decade, in most cases in several phases of increasing stringency. To cope with these mandates, developers of engines and related equipment are aiming to break new ground in the fields of combustion, fuel and hardware technologies. In this work, a...
conference paper 2020
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Xia, L. (author), de Jager, B. (author), Donkers, T. (author), Willems, F. (author)
article 2020
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van Lieshout, P.S. (author), de Jonge, V. (author), Vredeveldt, A.W. (author), Finner, S. (author)
Introducing alternative fuels on board has many far stretching implications for ship operators, authorities, fuel suppliers, equipment suppliers, engine manufacturers, ship builders and naval architects. In most cases such parties are not familiar with these new fuels. Hence a need exists for them for a means to quickly familiarize oneself with...
report 2020
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Willems, R. (author), Willems, F. (author), Deen, N. (author), Somers, B. (author)
The understanding of reactivity controlled compression ignition has greatly improved throughout recent years. While its potential for extremely low NOx and soot emissions has been confirmed numerous times, there remain some ambiguities about the ability of this concept to attain very high efficiency. Now that increasingly stringent CO2...
article 2020
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Vredeveldt, A.W. (author), van Dijk, T. (author), van den Brink, A. (author)
There is a strong urge to replace conventional bunker fuels such as heavy fuel oil (HFO), marine diesel oil (MDO) and marine gas oil (MGO) by ‘fuels’ which do not give a net emission of greenhouse gasses or emit pollutants when combusted. Candidate fuels are methanol, dimethyl ether (DME), ammonia, pressurised hydrogen and liquefied hydrogen....
report 2020
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Seykens, X. (author), Bekdemir, C. (author), Han, J. (author), Willems, R. (author), van Hal, J. (author)
This paper focusses on the application of bioalcohols (ethanol and butanol) derived from seaweed in Heavy-Duty (HD) Compression Ignition (CI) combustion engines. Seaweed-based fuels do not claim land and are not in competition with the food chain. Currently, the application of high octane bioalcohols is limited to Spark Ignition (SI) engines....
conference paper 2020
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Tietge, U. (author), Diaz, S. (author), Mock, P. (author), Bandivadekar, A. (author), Dorboff, J. (author), Ligterink, N. (author)
other 2019
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Willems, F. (author), Kupper, F. (author), Ramesh, S. (author), Indrajuana, A. (author), Doosje, E. (author)
Reactivity Controlled Compression Ignition (RCCI) combines very high thermal efficiencies with ultra-low engine out NO x and PM emissions. Moreover, it enables the use of a wide range of fuels. As this pre-mixed combustion concept relies on controlled auto-ignition, closed-loop combustion control is essential to guarantee safe and stable...
conference paper 2019
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van der Weijst, R. (author), van Keulen, T. (author), Willems, F.P.T. (author)
This work presents a new method for online fuel-efficiency optimization of Diesel engines, using constrained extremum-seeking. A two-input optimization problem, which is suitable for extremum-seeking, is integrated into a tracking control system. As a result, both air-path and fuel-path actuators are used for tracking and extremum-seeking. A key...
article 2019
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Hauck, M. (author), Sair, A.A. (author), Steinmann, Z. (author), Visschedijk, A. (author), O'Connor, D. (author), Denier van der Gon, H. (author)
The carbon footprint of shale gas combusted in Europe was estimated from nine European shale gas plays as potential production regions. Greenhouse gas emission sources during shale gas production, such as fugitives from hydraulic fracturing or combustion emissions from horizontal drilling, were added to emissions occurring for conventional gas...
article 2019
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Bahceli, G. (author), Atli-Veltin, B. (author), Wilbers, D. (author), Cebeci, H. (author)
Energy transition towards cleaner fuels and renewable energy brings the attention to liquefied natural gas (LNG) and liquid hydrogen (LH2) applications. Cryogenic storage temperatures make the suitable material selection for the construction of such applications difficult. Ultra-high molecular weight polyethylene (UHMWPE) thermoplastics are...
conference paper 2019
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Willems, F. (author), van Gompel, P. (author), Seykens, X. (author), Wilkins, S. (author)
This work gives an outlook on the potential of automated driving functions (ADFs) to reduce real-world CO2 and pollutant emissions for heavy-duty powertrains. Up to now, ADF research mainly focuses on increased traffic safety, driver comfort, and road capacity. Studies on emissions are lacking. By taking the driver out-of-the-loop, cycle-to...
conference paper 2019
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Birdja, Y.Y. (author), Pérez-Gallent, E. (author), Figueiredo, M.C. (author), Göttle, A.J. (author), Calle-Vallejo, F. (author), Koper, M.T.M. (author)
The electrocatalytic reduction of carbon dioxide is a promising approach for storing (excess) renewable electricity as chemical energy in fuels. Here, we review recent advances and challenges in the understanding of electrochemical CO2 reduction. We discuss existing models for the initial activation of CO2 on the electrocatalyst and their...
article 2019
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Ibrahim, A. (author), Cicic, M. (author), Goswami, D. (author), Basten, T. (author), Johansson, K.H. (author)
Vehicle platooning has been attracting attention recently because of its ability to improve road capacity, safety and fuel efficiency. Vehicles communicate using Vehicle-to- Vehicle (V2V) wireless communication, making their status (acceleration, position, etc.) available to other vehicles. Shock waves, i.e. zones of reduced traffic speed that...
conference paper 2019
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Veraar, R.G. (author), Wieling, W.P.W. (author)
Solid Fuel Ramjet (SFRJ) technology is a very attractive propulsion option to extend the range of gun launched projectiles mainly due to the combination of high specific impulse inherent to airbreathing propulsion and mechanical properties of the solid fuel capable of withstanding the very high launch loads in the gun. In 2004, the Netherlands...
conference paper 2018
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van der Weijst, R. (author), van Keulen, T. (author), Willems, F.P.T. (author)
Advanced control concepts are required to maximize the fuel-efficiency of Diesel engines and to comply with emission legislation. The aim of this paper is to develop a controller that fully utilizes the fuel-path and air-path hardware, and is adaptive for real-world disturbances. The control design comprises a feedback control system, which uses...
conference paper 2018
Searched for: subject:"Fuels"
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