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Zhou, P. L., and Y. Q. Qian. "Development of a modified diesel engine cycle." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 212, no. 2 (February 1, 1998): 145–50. http://dx.doi.org/10.1243/0954407981525867.
This paper presents an investigation of a novel type of diesel engine cycle, an approximate constant pressure cycle. The prototype engine is called the diesel engine with oil cushioned piston (DEOCP). In contrast to conventional engines, the DEOCP has a variable cylinder volume which is controlled automatically by the engine's cylinder pressure. The variable cylinder pressure is achieved by inserting a hydraulic cylinder into the engine's piston rod. The engine cylinder pressure is thus self-controlled and an ideal constant pressure cycle can theoretically be achieved. Computer simulations and engine tests have shown that the DEOCP distinguishes itself with high cycle efficiency, improved low-load performance and good starting ability. A detailed theoretical analysis and test results are presented in the paper, as well as a discussion of existing problems and possible further developments. Development of the diesel engine with oil cushioned piston could break the limit of cycle efficiency of conventional engines, hence opening a new avenue for diesel engine development.
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Samad, Mohd Abdul, Syed Nawazish Mehdi, and Syed Khader basha. "A Modified Cylinder Block-IC Engine Experimentation." International Journal of Engineering and Advanced Technology 10, no. 3 (February 28, 2021): 6–8. http://dx.doi.org/10.35940/ijeat.b2095.0210321.
In Internal combustion Engines, the adequate cooling plays vital role for proper functioning and enhanced efficiencies. In the present scenario, the demand for Air cooled Engines with higher powers is increasing and hence necessity for Augmented heat transfer through fins. The present work confined to fins mounted on the cylinder block.In the present work, Internal Combustion Engine test rig is used, which consist of 4S, single cylinder, vertical, air cooled, SI Engine with Instrumentation panel, Throttle control mechanism and Electrical Loading system. The performance test on IC engine is carried out for three various configurations of cylinder blocks i.e., 1. Actual cylinder block 2.Cylinder block with triangular profile fins 3. Cylinder block with perforated triangular profile fins. Performance parameters are evaluated, plotted and compared & eventually conclusions are made.
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Wang, Yiwei, and Xianghua Huang. "Performance Seeking Control of Propfan Engines Based on Modified Cuckoo Search." International Journal of Turbo & Jet-Engines 37, no. 4 (November 18, 2020): 363–70. http://dx.doi.org/10.1515/tjj-2017-0034.
AbstractPerformance seeking control benefits propfan engine by generating optimal performance in different flight status. It is based on engine model, control model and optimization model. The control scheme of propfan engine is different from those of turbofan engines, for the thrust of propfan engines is mainly produced by propfans. After analysing the control structure of propfan engines, a control scheme for the propfan engine is proposed. The control scheme works well in flight envelope and the simulation results show that the overshoot of power shaft rotation speed is less than 2 % and the settling time is less than 0.9s. Based on this, a control scheme in performance seeking mode is proposed. A Modified Cuckoo Search method, which modifies the search step size and abandonment rate, is applied in the control scheme in maximum thrust mode and minimum fuel flow mode. The control scheme in performance seeking mode can reduce 2 % fuel flow, compared with the control scheme in torque-compensation mode. Performance of the scheme is better than standard Cuckoo Search and Genetic Algorithm.
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Petukhov, S. A., L. S. Kurmanova, M. P. Erzamaev, D. S. Sazonov, and D. S. Chinchenko. "Improving the Environmental Safety of Transport Engines Using Modified Engine Oil." Ecology and Industry of Russia 24, no. 1 (January 10, 2020): 9–13. http://dx.doi.org/10.18412/1816-0395-2020-1-9-13.
The problems of reducing emissions of harmful substances by transport engines are considered. It has been established that the use of modified engine oil is an effective way to increase the environmental safety of transport engines. The effectiveness of additives to improve the backsize of motor oil and reduce harmful emissions in the exhaust gas was evaluated. Methods for feeding additives are proposed. Technical solutions for the use of additives for transport engines have been developed. Experimental studies are presented to assess the effect of modified engine oil on the environmental safety of an engine.
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Amit, Mr. "Performance Study of Air Driven Engine Being Modified From Conventional Four Stroke Engine without Cam Modification." International Journal of Engineering and Advanced Technology 10, no. 2 (December 30, 2020): 250–54. http://dx.doi.org/10.35940/ijeat.b2076.1210220.
This research presents a novel mechanism to convert a conventional100-cc four stroke driven engine into a 2 stroke compressed air driven engine without doing any modifications in the cam shaft. This allows for a faster valve operation & also helping the existing engines to be converted into air driven engines with removal of intake and exhaust manifold and also provides a platform to curb the growing menace of air pollution by using the existing old engines to be used as air driven engine. Also, cycle of operation of the Air Engine has been representedon P-V diagram and theoretical efficiency has been calculated which is a function of pressure ratio and temperature, and comes out to be around 80 percent (@ Prr. Ratio of 10& Temp of 550K). Variation of rpm with percentage valve opening is seen at different pressure ratios and the maximum speed of the engine (after doing said modifications and running through compressed air)is observed to be 1573 rpm at a pressure of 9 bar with the developed mechanism for the existing 4 stroke maestro engine.
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Biernat, Krzysztof, Izabela Samson-Bręk, Zdzisław Chłopek, Marlena Owczuk, and Anna Matuszewska. "Assessment of the Environmental Impact of Using Methane Fuels to Supply Internal Combustion Engines." Energies 14, no. 11 (June 7, 2021): 3356. http://dx.doi.org/10.3390/en14113356.
This research paper studied the environmental impact of using methane fuels for supplying internal combustion engines. Methane fuel types and the methods of their use in internal combustion engines were systematized. The knowledge regarding the environmental impact of using methane fuels for supplying internal combustion engines was analyzed. The authors studied the properties of various internal combustion engines used for different applications (specialized engines of power generators—Liebherr G9512 and MAN E3262 LE212, powered by biogas, engine for road and off-road vehicles—Cummins 6C8.3, in self-ignition, original version powered by diesel fuel, and its modified version—a spark-ignition engine powered by methane fuel) under various operating conditions in approval tests. The sensitivity of the engine properties, especially pollutant emissions, to its operating states were studied. In the case of a Cummins 6C8.3 modified engine, a significant reduction in the pollutant emission owing to the use of methane fuel, relative to the original self-ignition engine, was found. The emission of carbon oxide decreased by approximately 30%, hydrocarbons by approximately 70% and nitrogen oxide by approximately 50%, as well as a particulate matter emission was also eliminated. Specific brake emission of carbon oxide is the most sensitive to the operating states of the engine: 0.324 for a self-ignition engine and 0.264 for a spark-ignition engine, with the least sensitive being specific brake emission of nitrogen oxide: 0.121 for a self-ignition engine and 0.097 for a spark-ignition engine. The specific brake emission of carbon monoxide and hydrocarbons for stationary engines was higher in comparison with both versions of Cummins 6C8.3 engine. However, the emission of nitrogen oxide for stationary engines was lower than for Cummins engines.
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Lampreia, Suzana, José Requeijo, and Victor Lobo. "Diesel engine vibration monitoring based on a statistical model." MATEC Web of Conferences 211 (2018): 03007. http://dx.doi.org/10.1051/matecconf/201821103007.
There are various causes for vibrations on diesel engines. The engine vibrations depend not only on the present state of the engine, but also on the fuel quality, the environmental conditions (sea state in the case of shipborne engines), type of casing, other equipment in the vicinity, etc. The engines used for this study are installed aboard a ship, and the main aim is to use modified control charts to assess the condition of the engine and recommend corrective measures when necessary. An important issue to do this correctly is choosing the right places to measure vibration. The collected data is vibration at various engine power levels, measured at various points. The engine’s fault history is taken into consideration, but proved to be almost irrelevant. By using modified control charts, the engine vibrations can be estimated, and faults can be detected and classified so as to take corrective actions. In this study we followed a methodology that is slightly different from our previous work, and achieved good results.
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Lus, Tomasz. "Application of HFRT Methods to Diagnose the Technical Condition of High-Speed Marine Diesel Engines." Solid State Phenomena 236 (July 2015): 161–68. http://dx.doi.org/10.4028/www.scientific.net/ssp.236.161.
The paper presents problems related to testing of the technical condition of high-speed marine diesel engines that are not equipped with indicated valves, as it is in the case of larger medium-and low-speed marine internal combustion engines. In this case, in assessment of technical condition of engine fuel injection system and valve gear system a vibration signals (in time / angle domain) analysis modified method called HFRT (High Frequency Resonance Technique) can be used. This method indirectly helps also to evaluate the fuel combustion process in the engine cylinders. The paper presents the theoretical basis of a modified HFRT method, physical implementation of the marine diesel engine system’s analyzer used for marine engines testing built at the Institute of Construction and Operation of Ships at Polish Naval Academy (PNA) in Gdynia. The paper also includes a description of the vibration signal processing methodology and examples of measurements made in the ships conditions for a few selected types of engines.
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Fan, Chen. "Study on Modified Natural Gas Engine Considering NOx Emission." Applied Mechanics and Materials 318 (May 2013): 371–74. http://dx.doi.org/10.4028/www.scientific.net/amm.318.371.
There was a conflict between NOx emission and engine power of modified natural gas engine. Influence facters of NOx emission and emission characteristics of existing modified engine were studied. Emission and engine power of natural gas engine modified from gasoline and diesel engine were compared. Then some sugesstion are brought out for designing low NOx emission natural gas engine and promote engine power.
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Ryan, T. W. "Coal-Fueled Diesel Development: A Technical Review." Journal of Engineering for Gas Turbines and Power 116, no. 4 (October 1, 1994): 740–48. http://dx.doi.org/10.1115/1.2906881.
The purpose of this paper is to describe and summarize the results of the Coal Fueled Diesel Engine Development Program, sponsored by the U.S. Department of Energy, Morgantown Energy Technology Center. The results of the program indicate that diesel engines can be designed to operate reliably on coal–water slurries. The engine must be modified to include hard-wear resistant rings and liners. The injection system design must be modified to accommodate the slurry and to incorporate hard materials for wear prevention.
Ervestrand, Jonas. "Förbättrad förbränningsstabilitet i EBK för turbofläktmotor RM12 genom förändrad motorreglering : Improved afterburner combustion stability for turbofan engine RM12 by modified engine control." Thesis, Linköping University, Department of Electrical Engineering, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-282.
The engine of JAS 39 Gripen, RM12, has recently been equipped with a new flameholder and a new engine inlet. This change has caused an increased noise level from the engine when the afterburner is in use. The noise level reaches its peak when the afterburner is partially used. The problem is thought to be unstable combustion in the regions around the flameholder. A solution to the problem has been proposed by Volvo Aero. The idea is to modify the software in the engine control unit (FADEC) that changes the airflows in the engine. This master thesis implements the proposed changes and analyzes the effects of this implementation. The analysis is done by simulations of a model of the engine that Volvo Aero has created and implemented in MatrixX/SystemBuild. Simulations showed that it is possible to achieve the desired result by the software changes. Further the simulations showed some problems with stability for the engine when controlled by the modified control unit. This was solved by implementing a filter in the FADEC software.
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Price, Brian. "The application of modified adaptive landscapes to heuristic modelling of engine concept designs using sparse data." Thesis, Aston University, 2017. http://publications.aston.ac.uk/37624/.
The automotive internal combustion engine industry operates in a sector that relies on high production volumes for economies of scale, and dedicated production equipment for efficiency of operations and control of quality, yet is subject to the vagaries of a dynamic marketplace, with the need for constant change. These circumstances place pressure on engine designs to be optimised at launch to be competitive and meet market needs, yet be adaptable to uncertain requirements for change over their production life. Engine designers therefore need concept configuration evaluation tools that can assess architectures for resilience to geometric change over the production life of the product. The problem of being resource efficient whilst having the capacity to adapt tochanging environments is one that has been addressed in nature. Natural systems have evolved strategies of satisficing conflicting requirements whilst being resource efficient. The theory of adaptive landscapes helps us to visualise the adaptive capacity of potential morphological forms. A concept attribute analysis methodology based on satisficing and adaptive landscapes has been developed and tested for application to engine concept design. The Plateau, Flooded Adaptive Landscape technique (PFAL),has been evaluated against exemplar engine life histories and shows merit in aiding the decision-making process for concept designers working with sparse data. The process lets the designer visualise the attribute map, enabling them to make better trade-off decisions and share these with non-expert stakeholders to gain their input in final concept choices.
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Güimil, Fernando. "Comparing the Maximum Likelihood Method and a Modified Moment Method to fit a Weibull distribution to aircraft engine failure time data." Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1997. http://handle.dtic.mil/100.2/ADA337364.
Güimil, Fernando. "Comparing the Maximum Likelihood Method and a Modified Moment Method to fit a Weibull distribution to aircraft engine failure time data." Thesis, Monterey, California. Naval Postgraduate School, 1997. http://hdl.handle.net/10945/8112.
Approved for public release; distribution is unlimited. This thesis provides a comparison of the accuracies of two methods for fitting a Weibull distribution to a set of aircraft engines time between failure data. One method used is the Maximum Likelihood Method and assumes that these engine failure times are independent. The other method is a Modified Method of Moments procedure and uses the fact that if time to failure T has a Weibull distribution with scale parameter lambda and shape parameter beta, then T(beta) has an exponential distribution with scale parameter lambda(beta). The latter method makes no assumption about independent failure times. A comparison is made from times that are randomly generated with a program. The program generates times in a manner that resembles the way in which engine failures occur in the real world for an engine with three subsystems. These generated operating times between failures for the same engine are not statistically independent. This comparison was extended to real data. Although the two methods gave good fits, the Maximum Likelihood Method produced a better fit than the Modified Method of Moments. Explanations for this fact are analyzed and presented in the conclusions
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Rejnuš, Miroslav. "Modifikace tříválcového vznětového motoru na zkušební jednoválec." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2021. http://www.nusl.cz/ntk/nusl-449787.
The master thesis deals with the design of a single-cylinder diesel piston internal combustion test engine by modifying the initial mass-produced three-cylinder engine. The first part of the thesis is devoted to the introduction to the problems of diesel and experimental single cylinder engines. Subsequent chapters focus on the adaptation of the baseline engine itself, including balancing of inertial forces. Furthermore, the crankshaft operability is checked, including the determination of safety against high-cycle fatigue. The last chapter deals with the design of the connection of the adapted unit to the dynamometer.
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Guo, Qi. "Bangladesh Shoreline Changes During the Last Four Decades Using Satellite Remote Sensing Data." The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1503258115717912.
Battu, Laurent P. "Corrosion resistance of modified [beta]-Eucryptite /." This resource online, 1991. http://scholar.lib.vt.edu/theses/available/etd-08142009-040239/.
The corrosion resistance of chemically modified β-eucryptite (Li0.41Mg0.035AlP0.52Si0.480₄) having low expansion anisotropy and a near zero coefficient of thennal expansion was evaluated. Samples were exposed to aqueous hydrochloride acid at temperatures up to 100°C and environments containing sodium sulfate up to l000°C. The corrosion resistance was characterized by dilatometry, scanning electron microscopy, X-ray diffraction, energy dispersive x-ray analysis, weight variations, and mechanical properties variations.
The results show that modified β-eucryptite is more severely corroded than
commercial lithium-alumina-silicate glass-ceramics when exposed to these environments. Aqueous HCI removes AIP04 from modified β-eucryptite leaving a very porous structure. Molten salt corrodes modified β-eucryptite by penetration of sodium and sulfur which form an alkali melt under the surface. The modulus of rupture and the Young's modulus are reduced by both types of corrosion. Master of Science
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Mlimi, Kenneth Mpemane. "Metal modified mesoporous ZSM-5 as catalysts for the oligomerization of 1- hexene." University of Western Cape, 2021. http://hdl.handle.net/11394/8423.
>Magister Scientiae - MSc The use of diesel engines in vehicles and heavy machinery throughout the world has been
slowly increasing in the past few decades. This has led to high demand for diesel and
gasoline with high octane number. Diesel and gasoline are in high demand due to its qualities
as fuels containing low or no sulfur and nitrogen compounds, making them environmentally
friendly and the anti- knocking properties respectively. With these reasons and more,
researchers have been studying processes like the catalytic oligomerization of olefins to
produce synthetic fuels with augmented qualities and properties. The effectiveness of the
process will depend on the quality of the catalyst.
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Babak, LotfizadehDehkordi Dr. "RHEOLOGY AND TRIBOLOGY OF LUBRICANTS WITH POLYMERIC VISCOSITY MODIFIERS." University of Akron / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=akron1438208488.
Güimil, Fernando. Comparing the Maximum Likelihood Method and a Modified Moment Method to fit a Weibull distribution to aircraft engine failure time data. Monterey, Calif: Naval Postgraduate School, 1997.
Paxson, Daniel E. A modified through-flow ware rotor cycle with combustor bypass ducts. [Cleveland, Ohio]: National Aeronautics and Space Administration, Lewis Research Center, 1998.
Paxson, Daniel E. A modified through-flow ware rotor cycle with combustor bypass ducts. [Cleveland, Ohio]: National Aeronautics and Space Administration, Lewis Research Center, 1998.
Paxson, Daniel E. A modified through-flow ware rotor cycle with combustor bypass ducts. [Cleveland, Ohio]: National Aeronautics and Space Administration, Lewis Research Center, 1998.
Ohio EPA. Division of Air Pollution Control, ed. Modified vehicles and auto emissions testing: (engine-switch, rebuilt, gray-market, self-assembled and kit cars). Columbus: [Ohio EPA, Division of Air Pollution Control], 1997.
Modified vehicles and auto emissions testing: (engine-switch, rebuilt, gray-market, self-assembled and kit cars). Columbus: [Ohio EPA, Division of Air Pollution Control], 1997.
Comparing the Maximum Likelihood Method and a Modified Moment Method to Fit a Weibull Distribution to Aircraft Engine Failure Time Data. Storming Media, 1997.
Razi, Nalim M., and Lewis Research Center, eds. A modified through-flow ware rotor cycle with combustor bypass ducts. [Cleveland, Ohio]: National Aeronautics and Space Administration, Lewis Research Center, 1998.
Gene-cloning processes enable us to produce large amounts of a DNA sequence so that its function can be studied. These technologies can also be applied in medicine and agriculture to genetically engineer production of biological proteins or whole organisms with new or modified traits. At the heart of these applications is the capability to produce recombinant proteins from cloned genes in host cells. ‘Genetic engineering’ outlines some of these applications: recombinant pharmaceuticals, monoclonal therapeutic antibodies, recombinant protein vaccines, gene therapy, and genetically modified foods. It also considers some of the concerns with these applications.
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Wolf, E. L. Solar Thermal Energy. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198769804.003.0009.
The Sun’s spectrum on Earth is modified by the atmosphere, and is harvested either by generating heat for direct use or for running heat engines, or by quantum absorption in solar cells, to be discussed later. Focusing of sunlight requires tracking of the Sun and is defeated on cloudy days. Heat engines have efficiency limits similar to the Carnot cycle limit. The steam turbine follows the Rankine cycle and is well developed in technology, optimally using a re-heat cycle of higher efficiency. Having learned quite a bit about how the Sun’s energy is created, and how that process might be reproduced on Earth, we turn now to methods for harvesting the energy from the Sun as a sustainable replacement for fossil fuel energy.
Частини книг з теми "Modified engine":
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Spilners, Ilgvars J., John F. Hedenburg, and Carl R. Spohn. "Evaluation of Engine Deposits in a Modified Single-Cylinder Engine Test." In Chemistry of Engine Combustion Deposits, 277–88. Boston, MA: Springer US, 1985. http://dx.doi.org/10.1007/978-1-4613-2469-0_16.
Sharma, Rahul, Amit Pal, and N. A. Ansari. "Prospects of bioCNG in Modified Diesel Engine." In Computational and Experimental Methods in Mechanical Engineering, 519–37. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-2857-3_51.
Boddu, Bhaskara Rao, and Valli Kumari Vatsavayi. "A Modified Ontology Based Personalized Search Engine Using Bond Energy Algorithm." In Advances in Computing and Communications, 296–306. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-22714-1_31.
Siqing, Liu, Chen Meizhu, Wu Shaopeng, Liu Jingxiang, Zhang Dong, and Wan Guiwen. "Physical and Chemical Properties of Asphalt Binders Modified with Waste Engine Oil." In Springer Proceedings in Energy, 667–82. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-0158-2_68.
Li, Honghua, Fengwei Sun, Hao Xu, Jielong Chen, Aijun Jin, and Fuquan Zhao. "A Study on Optimization Design of Engine-Room NVH for a Modified Vehicle." In Lecture Notes in Electrical Engineering, 341–53. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-33832-8_27.
Rajesh, R., C. Vijaya Bhaskar Reddy, and B. Durga Prasad. "Experimental Investigation on LHR Engine Modified Piston with YSZ Coating by Using Biodiesel." In Advances in Mechanical Engineering, 25–35. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-0942-8_3.
Kwankaomeng, Sutapat. "Investigation and Development of Modified Ross Yoke Mechanism on Alpha-Parallel-Cylinder Stirling Engine." In Energy for Propulsion, 77–94. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-10-7473-8_4.
Merkisz, Jerzy, Maciej Bajerlein, Łukasz Rymaniak, and Andrzej ZióŁkowski. "The Impact of Modified Piston in Two Stroke Engine on Toxic Emissions and Fuel Consumption." In Lecture Notes in Electrical Engineering, 205–15. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-33841-0_16.
Walzer, Peter. "Engines for Natural and Modified Plant Oil-Based Fuels." In Plant Oils as Fuels, 17. Berlin, Heidelberg: Springer Berlin Heidelberg, 1998. http://dx.doi.org/10.1007/978-3-642-72269-1_2.
Baskara Sethupathi, P., M. Leenus Jesu Martin, and J. Chandradass. "Adsorption of CO2 Using Modified ZSM-5 Zeolite in Petrol Engines." In Advances in Intelligent Systems and Computing, 433–45. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-10-6872-0_41.
Тези доповідей конференцій з теми "Modified engine":
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Matsuo, Junki, Daisuke Kitayama, Ryong Lee, and Kazutoshi Sumiya. "Modified map search engine." In the 5th International Confernece. New York, New York, USA: ACM Press, 2011. http://dx.doi.org/10.1145/1968613.1968719.
Ruch, David M., Frank J. Fronczak, and Norman H. Beachley. "Design of a Modified Hypocycloid Engine." In International Off-Highway & Powerplant Congress & Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1991. http://dx.doi.org/10.4271/911810.
Burkett, Michael J., Norman H. Beachley, and Frank J. Fronczak. "Lubrication Aspects of a Modified Hypocycloid Engine." In International Congress & Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1992. http://dx.doi.org/10.4271/920380.
PORTER, KENNETH. "A modified-Brayton cycle pulse turbine engine." In 24th Joint Propulsion Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1988. http://dx.doi.org/10.2514/6.1988-3067.
Borissov, Anatoli A., Alexander A. Borissov, and Kenneth K. Kramer. "High Efficiency Energy Conversion System Based on Modified Brayton Cycle." In ASME 2005 Internal Combustion Engine Division Spring Technical Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/ices2005-1051.
Each year, the users in the U.S. alone spend over $100 billion on various type of engines to produce power — electrical, mechanical, and thermal. Despite technological advances, most all of these power generation systems have only been fine tuned: the engine efficiencies may have been improved slightly, but the underlying thermodynamic principles have not been modified to effect a drastic improvement. The result is that most engines in service today suffer from two major problems: low fuel efficiency and emission of high levels of polluting gases in the exhaust gases. The current state of propulsion engines or distributed generation technologies using heat engines shows an average efficiency of between 20% and 40%. These low efficiencies in a high–cost energy market indicate a great need for more efficient technologies. This paper describes a new method of achieving a very high efficiency, namely optimizing every stage of the thermodynamic process-Brayton cycle. Two modified processes, such as isothermal compression and recuperation, add about 35% efficiency to the conventional Brayton cycle, making 60% efficiency for modified Brayton cycle. By utilizing a positive displacement compressor and expander with a novel vortex combustion chamber and a vortex recuperator, high levels of efficiency with low emissions and noise are possible. The prototype engine with low RPM and high torque has been built which use continuous combustion of different fuels under a constant pressure. First results of the engine’s components testing are presented.
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SANTOS, Dinarte, Gustavo NUNES, and Kleiton Ferreira MIRANDA. "Hydrocarbon burning velocities determination using modified CFR engine." In XXIV Simpósio Internacional de Engenharia Automotiva. São Paulo: Editora Edgard Blücher, 2016. http://dx.doi.org/10.5151/engpro-simea2016-pap110.
DENNIS, H., J. HUTT, and T. NESMAN. "Stability testing of a modified Space Shuttle Main Engine." In 27th Joint Propulsion Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1991. http://dx.doi.org/10.2514/6.1991-1983.
Jiao, Guoshuai, Qiang Liu, Li Mao, and Xiu Guo. "Pipe Routing for Aero-Engine Using Modified MOEA/D." In 2017 10th International Symposium on Computational Intelligence and Design (ISCID). IEEE, 2017. http://dx.doi.org/10.1109/iscid.2017.39.
Kobayashi, Kan, Sadatake Tomioka, Takeshi Kanda, Kouichiro Tani, Tetsuo Hiraiwa, and Toshihito Saito. "Modified water-cooled scramjet engine tested under M8 Condition." In 37th Joint Propulsion Conference and Exhibit. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2001. http://dx.doi.org/10.2514/6.2001-3202.
Kalam, Md Abul, H. H. Masjuki, M. A. Amalina, H. Abdesselam, T. M. I. Mahlia, and Md Aslam Uddin. "Emissions Characteristics of a Modified CNG Gasoline-Cycle Engine." In SPE Asia Pacific Oil and Gas Conference and Exhibition. Society of Petroleum Engineers, 2005. http://dx.doi.org/10.2118/93350-ms.
Cosimbescu, Lelia, Joshua W. Robinson, John Timothy Bays, Jun Qu, and Brian West. Modified Thermoresponsive Hyperbranched Polymers for Improved Viscosity and Enhanced Lubricity of Engine Oils. Office of Scientific and Technical Information (OSTI), September 2016. http://dx.doi.org/10.2172/1327821.
Collings, Nick, Neil Coghlan, and Tim Hands. In-Cylinder Gas Sampling of IC Engines Using Modified GDI Injectors~The CSV. Warrendale, PA: SAE International, May 2005. http://dx.doi.org/10.4271/2005-08-0160.
Musculus, Mark P., and Jeff Dietz. Effects of diesel fuel combustion-modifier additives on In-cylinder soot formation in a heavy-duty Dl diesel engine. Office of Scientific and Technical Information (OSTI), July 2005. http://dx.doi.org/10.2172/876311.
Svarcas, Laimute R., and Michael S. Brenner. New Power Valve Additive Technology Suitable for Two-Stroke Engines Containing Power Valves or Exhaust Port Modifiers. Warrendale, PA: SAE International, October 2005. http://dx.doi.org/10.4271/2005-32-0096.
