Thematische Bibliographien / Zero emission mini excavator

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Auswahl der wissenschaftlichen Literatur zum Thema „Zero emission mini excavator“

Autor: Grafiati

Veröffentlicht am 28. Juni 2021

Zuletzt aktualisiert am 1. Februar 2022

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Zeitschriftenartikel zum Thema "Zero emission mini excavator"

Nevrly, Josef, Martin Fichta, Miroslav Jurik, Zdenek Nemec, Daniel Koutny, Pavel Vorel und Petr Prochazka. „Battery Electric Drive of Excavator Designed with Support of Computer Modeling and Simulation“. Proceedings 58, Nr. 1 (12.09.2020): 25. http://dx.doi.org/10.3390/wef-06927.

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The motivation for this article was to describe the creation of a battery electric drive of a smaller excavator of a well-known manufacturer. The aim of the excavator electrification research was to replace its internal combustion engine with an electric motor. The innovated excavator does not burden its surroundings with gas exhalations and excessive sound emissions, so that it can work in confined spaces or protected areas. Simulation models of electric and hydraulic parts of the drive were created to select the most suitable solutions verified or predicted by simulations in a Matlab/Simulink environment. Tests have shown that the excavator is capable of operating for at least 7 h without recharging the battery. The other main achieved results of the project are a functional model of zero emissions of mini-excavator exhalation gases with significantly reduced noise, a proven control algorithm in the form of software, and its utility model according to the patent application 2018-35127 adopted by the Industrial Property Office of the Czech Republic. Innovation of the solution of the excavator was awarded the Gold Medal at the Brno International Engineering Fair in 2018.

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González Palencia, Juan C., Mikiya Araki und Seiichi Shiga. „Energy, environmental and economic impact of mini-sized and zero-emission vehicle diffusion on a light-duty vehicle fleet“. Applied Energy 181 (November 2016): 96–109. http://dx.doi.org/10.1016/j.apenergy.2016.08.045.

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Fu, Shengjie, Zhongshen Li, Tianliang Lin, Qihuai Chen und Haoling Ren. „A Positive Flow Control System for Electric Excavators Based on Variable Speed Control“. Applied Sciences 10, Nr. 14 (14.07.2020): 4826. http://dx.doi.org/10.3390/app10144826.

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Energy conservation and emission reduction of construction machinery are the focus of current research. The traditional excavator, whose hydraulic pump is driven by the engine, has high fuel consumption and emissions. Furthermore, it is difficult to match the working point of the engine to that of the hydraulic pump. Current pure electric drive technology has the advantages of zero pollution and low noise, and the motor used has the advantages of fast response and a wide speed range. Based on the characteristics of the pure electric drive technology, a positive flow system based on variable speed constant displacement instead of a variable displacement pump for pure electric construction machinery is put forward to realize the flow-matching of the whole machine. The basic structure and working principle were introduced. The control process was analyzed. The controllability and energy saving of the proposed system were tested through simulation and experimental analysis. The research results showed that the controllability of the proposed positive flow system was comparable to that of the traditional throttling speed-regulating control system. The energy-saving efficiency of the proposed positive flow system is increased by 35.2% compared to that of the tradition control system. To further exploit the strong overload capacity of electric motors of electric construction machinery and solve the insufficient power under sudden load, research on constant power control will be carried out in the future.

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Khanal, Kshitiz, und Bivek Baral. „Sub-national Energy Access Planning Model for Sustainable Development Goals: A Case Study of Barpak“. Journal of the Institute of Engineering 15, Nr. 3 (15.10.2020): 183–90. http://dx.doi.org/10.3126/jie.v15i3.32179.

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As most nations have adopted the Sustainable Development agenda to achieve the 17 Sustainable Development Goals (SDGs) by 2030, it is vital that planning of energy systems at local, regional and national levels also align with the agenda in order to achieve the goals. This study explores the sustainability of primary energy resources of a rural community to meet growing demands of the community, in order to achieve SDGs for energy access Goal no. 7 (SDG7) at local level. Using a linear back-casting techno-economic energy access model that informs the expected change in energy demand in order to reach SDG7 targets, this study examined whether local energy resources would be enough to achieve the targets for Barpak VDC (named such at the time of data collection before Nepal’s administrative restructuring), and explored the possibility of importing electricity from national grid to attain SDG7 targets. By analyzing the outputs of the model for Barpak, we found that currently assessed local energy resources are insufficient to meet the energy access targets. Importing electricity from national grid, in addition to the mini-hydropower plant currently in operation at Barpak is needed to achieve the targets. Huge cost investment and timely expansion of transmission and distribution infrastructure is crucial. By 2030, total energy demand is expected to grow up to 50,000 Gigajoules per year. Electricity import from national grid grows steadily, reaching up to 45,000 Gigajoules in 2030. The social costs of energy will continue to be dominated by household sector till 2030, reaching up to 30 million Nepali Rupees per year in total. Use of wood as fuel, the only significant source of emission in the model is modeled to decrease linearly and stop by 2030, as required by SDGs. Emission of 17 Metric Tonnes of Carbon-dioxide and 4.5 million kg Methane equivalent is reduced to zero at 2030. This model serves as an innovative approach to integrate SDG targets to local and regional energy planning process, and can be adopted for energy systems and policy planning for various regions in Nepal.

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NICOLINI, PIERO. „NONCOMMUTATIVE BLACK HOLES, THE FINAL APPEAL TO QUANTUM GRAVITY: A REVIEW“. International Journal of Modern Physics A 24, Nr. 07 (20.03.2009): 1229–308. http://dx.doi.org/10.1142/s0217751x09043353.

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We present the state of the art regarding the relation between the physics of Quantum Black Holes and Noncommutative Geometry. We start with a review of models proposed in the literature for describing deformations of General Relativity in the presence of noncommutativity, seen as an effective theory of Quantum Gravity. We study the resulting metrics, proposed to replace or at least to improve the conventional black hole solutions of Einstein's equation. In particular, we analyze noncommutative-inspired solutions obtained in terms of quasiclassical noncommutative coordinates: indeed because of their surprising new features, these solutions enable us to circumvent long standing problems with Quantum Field Theory in Curved Space and to cure the singular behavior of gravity at the centers of black holes. As a consequence, for the first time, we get a complete description of what we may call the black hole SCRAM, the shut down of the emission of thermal radiation from the black hole: in place of the conventional scenario of runaway evaporation in the Planck phase, we find a zero temperature final state, a stable black hole remnant, whose size and mass are determined uniquely in terms of the noncommutative parameter θ. This result turns out to be of vital importance for the physics of the forthcoming experiments at the LHC, where mini black hole production is foreseen in extreme energy hadron collisions. Because of this, we devote the final part of this review to higher-dimensional solutions and their phenomenological implications for TeV Gravity.

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Eyankware, Oghenegare Emmanuel, und Idaeresoari Harriet Ateke. „Methane and Hydrogen Storage in Metal Organic Frameworks: A Mini Review“. Journal of Environmental & Earth Sciences 2, Nr. 2 (23.12.2020). http://dx.doi.org/10.30564/jees.v2i2.2642.

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The need for a net zero carbon emission future is imperative for environmental sustainability hence, intensive carbon fuels would need to be replaced with less carbon emitting energy sources such as natural gas till clean energy source such as hydrogen becomes commercialized. As a result, this mini review discusses the use of metal organic framework (MOF) for adsorption of methane and hydrogen in specially designed tanks for improved performance so as to increase their applicability. Herein, adsorption (delivery) capacity of selected high performing MOFs for methane and hydrogen storage were highlighted in reference to the targets set by United States Department of Energy’s Advanced Research Projects Agency-Energy (ARPA-E) and Fuel Cells Technology Office. In this regard, specific design and chemistry of MOFs for improved methane and hydrogen adsorption were highlighted accordingly. In addition, an overview of computational and molecular studies of hypothetical MOFs was done – the various approaches used and their proficiency for construction of specific of crystalline structures and topologies were herewith discussed.

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Dissertationen zum Thema "Zero emission mini excavator"

Nožka, Michal. „Řízení hydraulických rozváděčů miniexkavátoru“. Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2018. http://www.nusl.cz/ntk/nusl-442674.

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This diploma thesis deals with the design of control algorithm for hydraulic directional control valves of a zero-emission mini excavator. Zero emission excavator have same parameters as diesel engine powered version of it. To solve this problem simulations were done for hydraulics and control algorithm of this machine. To find right parameters of simulation models, experiments have been done. There were also proposed some methods to obtain the right set of parameters. The result of this diploma thesis is control algorithm for directional control valves of this very unique mini excavator that doesn't have any competitor (in terms of control algorithm). Set of parameters was also tested during experiments.

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Matiaško, Dušan. „Modely a simulace pochodů bezemisního mini-exkavátoru s elektrickým pohonem“. Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2021. http://www.nusl.cz/ntk/nusl-442805.

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The diploma thesis dealt with a partial problem of conversion of the mini-excavator E19 by Bobcat with an internal combustion engine to emission-free propulsion. The main task was design and construction of electrical and hydraulic circuits focusing on the drive of a mini-excavator. The simulations verified the properties and behavior of the mini-excavator under different conditions and initial settings. The results were comfirmed by experimental measurements. The output of the simulations recommended adjustments to the values of individual parameters depending on the travel speed but also the efficiency of the entire machine.

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Konferenzberichte zum Thema "Zero emission mini excavator"

Sun, Edward I., Wayne N. Mcmahon, Dave Peterson, Jeffrey Wong, Eivind Stenersen und Andrew J. Dallas. „Evaluation of an Enhanced Constant Volume Sampling System and a Bag Mini Diluter for Near Zero Exhaust Emission Testing“. In SAE 2005 World Congress & Exhibition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2005. http://dx.doi.org/10.4271/2005-01-0684.

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