Searched for: subject:"Injection"
(1 - 20 of 131)

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Singh, A. (author), Fokker, P.A. (author)
This work is an extension of the time-resolved poro-elasto-plastic MohrCoulomb model by Fokker et al to include a more realistic constitutive model. Experiments on Slochteren sandstone revealed that the inelastic deformation contributes significantly in compressive deformation almost in all stages of loading and instigated the development of a...
article 2021
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Bosklopper, J. (author), Sapra, H. (author), van de Ketterij, R. (author), van Sluijs, W. (author), Bekdemir, C. (author), de Vos, P. (author), Visser, K. (author)
The maritime sector is currently facing a serious challenge of reducing emissions to meet the strict international and national emission regulations. In response to this challenge, the industry is initiating several research initiatives focused towards employment of alternative fuels in marine internal combustion engines. One of the promising...
conference paper 2020
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Lathouwers, S. (author), Everts, M.H. (author), Huisman, M. (author)
String sanitizers are widely used functions for preventing injection attacks such as SQL injections and cross-site scripting (XSS). It is therefore crucial that the implementations of such string sanitizers are correct. We present a novel approach to reason about a sanitizer's correctness by automatically generating a model of the implementation...
conference paper 2020
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Bijlsma, T. (author), Buriachevskyi, A. (author), Frigerio, A. (author), Fu, Y. (author), Goossens, K. (author), Ors, A.O. (author), Van Der Perk, P.J. (author), Terechko, A. (author), Vermeulen, B. (author)
Autonomous vehicles use cyber-physical systems to provide comfort and safety to passengers. Design of safety mechanisms for such systems is hindered by the growing quantity and complexity of SoCs (System-on-a-Chip) and software stacks required for autonomous operation. Our study tackles two challenges: (1) fault handling in an autonomous driving...
conference paper 2020
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Koledova, E. (author), Tornincasa, V. (author), van Dommelen, P. (author)
Background. Poor adherence to long-term recombinant human growth hormone (r-hGH) treatment can lead to suboptimal clinical outcomes; consequently, supporting and monitoring adherence is a crucial part of patient management. We assessed adherence to r-hGH treatment in children with growth disorders over 48 months using a connected monitoring...
article 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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Fu, Y. (author), Terechko, A. (author), Bijlsma, T. (author), Cuijners, P.J.L. (author), Redegeld, J. (author), Ors, A.O. (author)
Autonomous vehicles use Electronic Control Units running complex software to improve passenger comfort and safety. To test safety of in-vehicle electronics, the ISO 26262 standard on functional safety recommends using fault injection during component and system-level design. A Fault Injection Framework (FIF) induces hard-to-trigger hardware and...
conference paper 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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Simone, G. (author), Dyson, M.J. (author), Weijtens, C.H.L. (author), Meskers, S.C.J. (author), Coehoorn, R. (author), Janssen, R.A.J. (author), Gelinck, G.H. (author)
Minimizing the reverse bias dark current while retaining external quantum efficiency is crucial if the light detection sensitivity of organic photodiodes (OPDs) is to compete with inorganic photodetectors. However, a quantitative relationship between the magnitude of the dark current density under reverse bias (Jd) and the properties of the bulk...
article 2019
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Hunicz, J. (author), Mikulski, M. (author)
Low-temperature combustion in reciprocating engines appears to be a cutting-edge technology which ensures extremely low emissions of nitrogen oxides and particulate matters in parallel with high fuel efficiency. This mode of combustion can be realized in homogeneous charge compression ignition engines. However, this technology poses challenges,...
article 2018
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Hunicz, J. (author), Mikulski, M. (author), Rybak, A. (author)
Controlled auto-ignition (CAI) is an advanced combustion technology offering high thermal efficiency and low NOX emissions. One promising approach to achieve CAI combustion is application of negative valve overlap resulting in internal exhaust gas re-circulation. However, combustion control is still an issue which should be resolved before wide...
conference paper 2018
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Hunicz, J. (author), Mikulski, M. (author)
One of the pending issues regarding Homogeneous Charge Compression Ignition (HCCI) engines is high load operation limit constrained by excessive pressure rise rates (PRRs). The present study investigates various measures to reduce combustion harness in a residual-affected HCCI engine. At the same time, the impact of those measures on efficiency...
conference paper 2018
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Hunicz, J. (author), Mikulski, M. (author), Geca, M.S. (author), Kordos, P. (author), Komsta, H. (author)
Homogeneous charge compression ignition concepts despite high efficiency and ultra-low nitrous oxides emissions, suffer from week controllability and load range limited by excessive pressure rise rates. In the present work, controlled auto-ignition is achieved via direct injection of gasoline into the exhaust gasses recompressed during negative...
article 2018
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Duda, K. (author), Wierzbicki, S. (author), Śmieja, M. (author), Mikulski, M. (author)
In the present paper, laboratory produced, animal origin biofuels (swine lard and turkey lard had been used as raw material for biofuel production) were evaluated in terms of physicochemical parameters and compared with commercial mineral diesel fuel and its mixture with rapeseed oil methyl esters. Basing on the results of physicochemical...
article 2018
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van Hees, R.P.J. (author), Lubelli, B.A. (author), Hacuebord, A. (author)
The injection of chemical products, meant to penetrate in the capillaries of the materials composingan affected wall, is perhaps the most diffused method to deal with rising damp. The majority of thesechemical products are hydrophobic treatments; they can be either solvent-based or (increasingly) water-based. Traditionally, these products are...
article 2018
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Hunicz, J. (author), Mikulski, M. (author), Komsta, H. (author)
Homogeneous Charge Compression Ignition is a promising low temperature combustion technology for reciprocating engines that offers high fuel efficiency and extremely low exhaust emissions. However, combustion control should be improved and operating range should be widened for the technology to achieve production level. In this study an overview...
conference paper 2018
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Neele, F.P. (author), de Kler, R.C.F. (author), Nienoord, M. (author), Brownsort, P. (author), Koornneef, J.M. (author), Belfroid, S.P.C. (author), Peters, E. (author), van Wijhe, A. (author), Loeve, D. (author)
This paper presents the results of a study into the functional requirements and optimisation of the CO2 shipping chain, with a focus on the offshore offloading system. The goal was to evaluate the feasibility of a generic approach to the development of ship-based CO2 transport and storage systems in the North Sea, using a range of typical North...
article 2017
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Bergmann, P. (author), Diersch, M. (author), Götz, J. (author), Ivandic, M. (author), Ivanova, A. (author), Juhlin, C. (author), Kummerow, J. (author), Liebscher, A. (author), Lüth, S. (author), Meekes, S. (author), Norden, B. (author), Schmidt-Hattenberger, C. (author), Wagner, F.M. (author), Zhang, F. (author)
Geophysical monitoring activities were an important component of the CO2 injection program at the Ketzin site, Germany. Here we report on the seismic and electrical resistivity tomography (ERT) measurements performed during the period of the site development and CO2 injection. Details on the site geology, the history of the CO2 injection...
article 2016
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Waldmann, S. (author), Hofstee, C. (author), Koenen, M. (author), Loeve, D. (author)
Geological storage of captured CO2, which typically will contain certain amounts of impurities, in salineaquifers is of potential to reduce greenhouse gas emissions into the atmosphere. The co-injection of theimpurity SO2has an effect on the chemical reactivity of the fluid and solid phases as well as on the physicalbehaviour of the CO2plume. To...
article 2016
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Luo, X. (author), Donkers, M.C.F. (author), de Jager, A.G. (author), Willems, F.P.T. (author)
Multi-pulse fuel injection in diesel engines enables a large flexibility in controlling the fueling profile, such that the engine performance can be maintained subject to disturbances, i.e., ambient condition changes and fuel injection deviations. Based on linearized systems, current fuel injection controller synthesis methods do not consider...
conference paper 2016
Searched for: subject:"Injection"
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