Log in

Relevant bibliographies by topics / Two-stroke engines performance / Journal articles

To see the other types of publications on this topic, follow the link: Two-stroke engines performance.

Journal articles on the topic 'Two-stroke engines performance'

Author: Grafiati

Published: 4 June 2021

Last updated: 6 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Two-stroke engines performance.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Shokrollahihassanbarough, Farzad, Ali Alqahtani, and Mirosław Wyszynski. "Thermodynamic simulation comparison of opposed two-stroke and conventional four-stroke engines." Combustion Engines 162, no. 3 (2015): 78–84. http://dx.doi.org/10.19206/ce-116867.

Full text

Abstract:

Today’s technology leveraging allows OP2S (Opposed Piston 2-Stroke) engine to be considered as an alternative for the conventional four-stroke (4S) engines as mechanical drive in various applications, mainly in transportation. In general, OP2S engines are suited to compete with conventional 4-stroke engines where power-to-weight ratio, power-to-bulk volume ratio and fuel efficiency are requirements. This paper does present a brief advent, as well as the renaissance of OP2S engines and the novel technologies which have been used in the new approach. Also precise thermodynamic benefits have been

APA, Harvard, Vancouver, ISO, and other styles

2

Ramakrishnan, V., R. Thamilarasan, and K. Purushothaman. "Performance Evaluation of EGR in Two Stroke I.C. Engine." Applied Mechanics and Materials 812 (November 2015): 60–63. http://dx.doi.org/10.4028/www.scientific.net/amm.812.60.

Full text

Abstract:

Petrol engines are known for their simplicity, low cost and maintenance. However nowadays use of two stroke petrol engines are fading away from the market. An attempt has been made here to revive the use of these old engines by using Exhaust Gas Recirculation (EGR) to improve performances.Short circuiting of fresh charge is an important contributing factor for reduction in performance in two stroke engines. Our project is aimed to reduce short circuiting of fresh charge by admitting cooled exhaust gas to pass through reed valves fitted at the upper end of the transfer passage, in a crank case

APA, Harvard, Vancouver, ISO, and other styles

3

Kenny, R. G. "Developments in Two-Stroke Cycle Engine Exhaust Emissions." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 206, no. 2 (1992): 93–106. http://dx.doi.org/10.1243/pime_proc_1992_206_165_02.

Full text

Abstract:

This paper is concerned with the exhaust emissions from two-stroke cycle spark ignition engines and the means being investigated to reduce them. The simple two-stroke engine has inherently low levels of NOx emissions and high levels of hydrocarbon emissions. The reasons for these emissions characteristics are explained by reference to the open literature. The two-stroke engine is used in a wide range of applications including low-cost, low-output mopeds and high-performance motorcycles. More recently there has been a resurgence of interest in the two-stroke as an alternative to the four-stroke

APA, Harvard, Vancouver, ISO, and other styles

4

Sapate, Kumar D., and A. N. Tikekar. "Mechanical Modifications to Convert Small Two Strokes Carbureted Engine to Electronic Fuel Injection System Engine to Reduce Emission and Fuel Consumption." Advanced Materials Research 768 (September 2013): 213–17. http://dx.doi.org/10.4028/www.scientific.net/amr.768.213.

Full text

Abstract:

The evolution of four stroke engines and improved environmental pollution control norms has pushed the two-stroke engines towards obsolescence due to their inherent design problems. This has made the existing manufacturers & users of two-stroke engines a setback. In this paper attempt has been made to high light the performance parameters in respect of fuel efficiency and emission control. In this research work an effort is made to retrofit the commonly used two stroke engine for optimal performance by using EFI engine. It mainly includes injector locations with reference to spark plug whi

APA, Harvard, Vancouver, ISO, and other styles

5

Kyrtatos, N. P., and I. Koumbarelis. "A Three-Zone Scavenging Model for Two-Stroke Uniflow Engines." Journal of Engineering for Gas Turbines and Power 110, no. 3 (1988): 531–37. http://dx.doi.org/10.1115/1.3240167.

Full text

Abstract:

A three-zone scavenging model for two-stroke uniflow engines was developed and used in conjunction with a control-volume-type engine simulation code for performance prediction of long stroke uniflow-type marine engines. In this model it is attempted to simulate the three different regions perceived to exist inside the cylinder during scavenging, namely the air, mixing, and combustion products regions, by modeling each region as a separate control volume. Two time-varying coefficients are used to specify the rates of entrainment of the air and the burned gases into the mixing region. Results of

APA, Harvard, Vancouver, ISO, and other styles

6

Haddad, S. D. "Piston Motion and Thermal Loading Analyses of Two-Stroke and Four-Stroke Cycle Engines for Locomotives." Journal of Engineering for Gas Turbines and Power 111, no. 3 (1989): 536–42. http://dx.doi.org/10.1115/1.3240288.

Full text

Abstract:

Two-stroke cycle and four-stroke cycle diesel engines are in use in rail traction, with the four-stroke cycle design dominating the field. Cycle simulations using computer programs have shown that the conventional two-stroke cycle is somewhat inferior to its four-stroke cycle counterpart in combustion efficiency and thermal loading. Research at Sulzer concluded that the conventional two-stroke cycle engine is not very suitable for locomotive application. A survey by Ricardos, based on an investigation of engines in current production for traction application, suggested that there are potential

APA, Harvard, Vancouver, ISO, and other styles

7

Boretti, Albert. "Design of Direct Injection Jet Ignition High Performance Naturally Aspirated Motorcycle Engines." Designs 3, no. 1 (2019): 11. http://dx.doi.org/10.3390/designs3010011.

Full text

Abstract:

Thanks to the adoption of high pressure, direct injection and jet ignition, plus electrically assisted turbo-compounding, the fuel conversion efficiency of Fédération Internationale de l'Automobile (FIA) F1 engines has been spectacularly improved up to values above 46% peak power, and 50% peak efficiency, by running lean of stoichiometry stratified in a high boost, high compression ratio environment. Opposite, Federation Internationale de Motocyclisme (FIM) Moto-GP engines are still naturally aspirated, port injected, spark ignited, working with homogeneous mixtures. This old fashioned but hig

APA, Harvard, Vancouver, ISO, and other styles

8

Hooper, P. R., T. Al-Shemmeri, and M. J. Goodwin. "Advanced modern low-emission two-stroke cycle engines." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 225, no. 11 (2011): 1531–43. http://dx.doi.org/10.1177/0954407011408649.

Full text

Abstract:

This paper reviews recent engines and associated technology offering potential low-emission two-stroke cycle operation for a range of applications. The study considers and discusses successfully applied modern production engines together with concepts exploring advanced possibilities for future application. The published results from research and development projects and the data from available technology are compared in terms of the specific performance. The paper does not compare combustion strategies or fluid dynamic aspects of two-stroke cycle engines but does consider and compare the data

APA, Harvard, Vancouver, ISO, and other styles

9

Arabaci, Emre. "Performance analysis of a novel six-stroke otto cycle engine." Thermal Science, no. 00 (2020): 144. http://dx.doi.org/10.2298/tsci190926144a.

Full text

Abstract:

In this study, a simulation model with finite time thermodynamics was presented for an Otto cycle six-stroke engine. In this six-stroke engine, two free strokes occur after the exhaust stroke. These free strokes cause the engine to have higher thermal efficiency. Due to high thermal efficiency, these six-stroke engines can be used in hybrid electric vehicles. In this study, the effect of residual gas fraction and stroke ratio on the effective power and effective thermal efficiency were investigated. In addition, heat balance was obtained for the engine and the use of fuel energy in the engine

APA, Harvard, Vancouver, ISO, and other styles

10

Wang, Yang, Wuqiang Long, Jingchen Cui, Xin Wang, Hua Tian, and Xiangyu Meng. "Research on two-stroke compression release braking performance of a variable mode valve actuation system." International Journal of Engine Research 21, no. 9 (2019): 1696–708. http://dx.doi.org/10.1177/1468087419894449.

Full text

Abstract:

In order to enhance the braking safety and improve the fuel economy and emission of heavy-duty engines, a variable mode valve actuation system which can switch operation modes flexibly among four-stroke driving, two-stroke compression release braking, and cylinder deactivation modes on a four-stroke engine was developed in this article. The switching was controlled by the four-stroke driving module and the two-stroke braking module, both of which have two states: effective state and failure state. Besides, a full-cycle numerical model of a six-cylinder turbocharged engine was established for t

APA, Harvard, Vancouver, ISO, and other styles

11

Taranin, A. G. "USAGE FEATURES OF THE ELECTRONIC INDICATORS FOR SHIP’S AND SHORE POWER SUPPLY TWO– STROKE INTERNAL COMBUSTION ENGINES (DIESEL ENGINES)." EurasianUnionScientists 5, no. 4(73) (2020): 42–49. http://dx.doi.org/10.31618/esu.2413-9335.2020.5.73.682.

Full text

Abstract:

The present publication illuminate the tasks as follows: Electronic indicator proper usage at four–stroke internal combustion engines (diesel engines) indication; Indication results & diagram proper transfer to PC; indicator diagram top dead center TDC correction and engine performance data output values such as PMI–mean indicated pressure, PME–mean effective pressure, NIND–indicated power and NEFF–effective power proper calculations for each cylinder and engine total.

APA, Harvard, Vancouver, ISO, and other styles

12

Taranin, A. G. "USAGE FEATURES OF THE ELECTRONIC INDICATORS FOR SHIP’S AND SHORE POWER SUPPLY TWO– STROKE INTERNAL COMBUSTION ENGINES (DIESEL ENGINES)." National Association of Scientists 1, no. 27(54) (2020): 39–47. http://dx.doi.org/10.31618/nas.2413-5291.2020.1.54.187.

Full text

Abstract:

The present publication illuminate the tasks as follows: Electronic indicator proper usage at four–stroke internal combustion engines (diesel engines) indication; Indication results & diagram proper transfer to PC; indicator diagram top dead center TDC correction and engine performance data output values such as PMI–mean indicated pressure, PME–mean effective pressure, NIND–indicated power and NEFF–effective power proper calculations for each cylinder and engine total

APA, Harvard, Vancouver, ISO, and other styles

13

Kutlar, Osman Akin, and Fatih Malkaz. "Two-Stroke Wankel Type Rotary Engine: A New Approach for Higher Power Density." Energies 12, no. 21 (2019): 4096. http://dx.doi.org/10.3390/en12214096.

Full text

Abstract:

The Wankel engine is a rotary type of four-stroke cycle internal combustion engine. The higher specific power output is one of its strong advantages. In Wankel rotary engine, every eccentric shaft revolution corresponds to one four-stroke cycle, whereas conventional reciprocating engine fulfills four-stroke cycle in two crankshaft revolutions. This means the power stroke frequency is twice that of conventional engines. Theoretically, application of two-stroke cycle on Wankel geometry will duplicate the power stroke frequency. In this research, a single-zone thermodynamic model is developed for

APA, Harvard, Vancouver, ISO, and other styles

14

Tsitsilonis, Konstantinos-Marios, Gerasimos Theotokatos, Nikolaos Xiros, and Malcolm Habens. "Systematic Investigation of a Large Two-Stroke Engine Crankshaft Dynamics Model." Energies 13, no. 10 (2020): 2486. http://dx.doi.org/10.3390/en13102486.

Full text

Abstract:

The crankshaft dynamics model is of vital importance to a multitude of aspects on engine diagnostics; however, systematic investigations of such models performance (especially for large two-stroke diesel engines that are widely used in the power generation and shipping industries) have not been reported in the literature. This study aims to cover this gap by systematically investigating the parameters that affect the performance of a two-stroke diesel engine crankshaft dynamics model, such as the numerical scheme as well as the engine components inertia and friction. Specifically, the followin

APA, Harvard, Vancouver, ISO, and other styles

15

Herrmann, Samara, Macklini Dalla Nora, and Thompson Diordinis Metzka Lanzanova. "Development of a Two-Stroke Cycle Engine for Use in the Agricultural Aviation Sector." Journal of Aerospace Technology and Management, no. 12 (November 21, 2020): 52–61. http://dx.doi.org/10.5028/jatm.cab.1155.

Full text

Abstract:

Reciprocating internal combustion engines have wide application in agricultural, recreational and experimental aircraft, resulting from their low cost and less complex maintenance compared to other engines. Thus, this work analyzed the performance of a conventional four-stroke engine operating in the two-stroke cycle by means of direct fuel injection and mechanical air supercharging. The use of a supercharger was essential in this design to provide adequate gas exchange inside the cylinder during the long valve overlap required, while direct fuel injection made it possible to reduce the short

APA, Harvard, Vancouver, ISO, and other styles

16

Athafah, Noor H., and Adei M. Salih. "Effect of Octane Number on Performance and Exhaust Emissions of an SI Engine." Engineering and Technology Journal 38, no. 4A (2020): 574–85. http://dx.doi.org/10.30684/etj.v38i4a.263.

Full text

Abstract:

Spark ignition engines are very popular engines that they are running millions of vehicles all over the world. This engine emits many harmful pollutants, such as CO, UHC, and NOX. In this paper, the impact of gasoline octane number on the engine performance and exhaust emissions was studied. In the tests, four-cylinder, four-stroke engine, and two variable octane numbers (RON83 and 94.5) were used. The engine was run at different engine speeds and loads. The results from the experimental study indicated that the brake specific fuel consumption (bsfc) of RON94.5 was higher than RON83 by 13.93%,

APA, Harvard, Vancouver, ISO, and other styles

17

Llamas, Xavier, and Lars Eriksson. "Control-oriented modeling of two-stroke diesel engines with exhaust gas recirculation for marine applications." Proceedings of the Institution of Mechanical Engineers, Part M: Journal of Engineering for the Maritime Environment 233, no. 2 (2018): 551–74. http://dx.doi.org/10.1177/1475090218768992.

Full text

Abstract:

Large marine two-stroke diesel engines are widely used as propulsion systems for shipping worldwide and are facing stricter NO x emission limits. Exhaust gas recirculation is introduced to these engines to reduce the produced combustion NO x to the allowed levels. Since the current number of engines built with exhaust gas recirculation is low and engine testing is very expensive, a powerful alternative for developing exhaust gas recirculation controllers for such engines is to use control-oriented simulation models. Unfortunately, the same reasons that motivate the use of simulation models als

APA, Harvard, Vancouver, ISO, and other styles

18

Kishan, S., S. R. Bell, and J. A. Caton. "Numerical Simulations of Two-Stroke Cycle Engines Using Coal Fuels." Journal of Engineering for Gas Turbines and Power 108, no. 4 (1986): 661–68. http://dx.doi.org/10.1115/1.3239962.

Full text

Abstract:

An analytical model of a two-stroke cycle, reciprocating, compression ignition engine was used to investigate the ignition and combustion characteristics of coal/water slurry fuels. The engine cycle simulation was based on a thermodynamic analysis of the cylinder contents and consisted of models for the injection, ignition, combustion, mixing, heat transfer, work, and scavenging processes. The thermodynamic analysis resulted in a set of first-order nonlinear, ordinary differential equations which were numerically integrated to obtain instantaneous cylinder gas, droplet, and particle conditions

APA, Harvard, Vancouver, ISO, and other styles

19

Masjuki, H. H., and M. A. Maleque. "Wear, Performance and Emissions of a Two-Stroke Engine Running on Palm Oil Methyl Ester Blended Lubricant." Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology 210, no. 4 (1996): 213–19. http://dx.doi.org/10.1243/pime_proc_1996_210_503_02.

Full text

Abstract:

Results of study on wear of piston rings, engine performance and exhaust gas emissions of palm oil methyl ester (POME) as a lubricating oil additive in a two-stroke gasoline engine test are presented. Piston ring wear behaviour was monitored as a function of running time. The power output and brake specific fuel consumption of the engine were measured at different speeds. Varnish/lacquer and carbon deposit on the spark plug electrode, cylinder and piston heads as well as exhaust gas (CO2, CO and O2) emission were measured. For comparison purposes, two types of commercial lubricating oils, viz.

APA, Harvard, Vancouver, ISO, and other styles

20

Luján, José Manuel, Héctor Climent, Pablo Olmeda, and Víctor Daniel Jiménez. "Heat transfer modeling in exhaust systems of high-performance two-stroke engines." Applied Thermal Engineering 69, no. 1-2 (2014): 96–104. http://dx.doi.org/10.1016/j.applthermaleng.2014.04.045.

Full text

APA, Harvard, Vancouver, ISO, and other styles

21

Huang, R. F., M.-P. Hsu, W. L. Chen, and K. Lee. "On the tuning pipe of a two-stroke engine for scooter-type motorcycles." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 213, no. 8 (1999): 861–66. http://dx.doi.org/10.1243/0954406991522464.

Full text

Abstract:

Engine performance and simultaneous pressure wave histograms in the cylinder and exhaust port were studied in this experiment. The performance of two-stroke engines for scooter-type motorcycles depended greatly on the length and expansion angle of the tuning pipe. The length of the lead-in pipe dominated the phase of the starting point of reflected expansion waves. The full length determined the timing of reflected expansion waves. The first expansion angle of the exhaust pipe must be limited to a small value and then expanded gradually to give the desired diameter. The effect of the muffler w

APA, Harvard, Vancouver, ISO, and other styles

22

Masi, Massimo, Matteo Pregrasso, and Paolo Gobbato. "A Practical Design Approach to Improve the Charging Efficiency of a Small Two-Stroke High Speed Engine Based on Basic CFD." E3S Web of Conferences 197 (2020): 06005. http://dx.doi.org/10.1051/e3sconf/202019706005.

Full text

Abstract:

The paper deals with the optimisation of the charging efficiency in a small two-stroke high-speed engine according to well-established design guidelines. The aim is to present the method successfully used in the preliminary screening of the performance improvement attainable in a crank-case-compression engine by design modifications to the transfer ports and manifolds. The method applies a basic CFD model of the steady-state flow across the cylinder block validated against experimental tests at the discharge flow bench. This model is used to approximate the actual scavenging process through a

APA, Harvard, Vancouver, ISO, and other styles

23

Feng, Yongming, Haiyan Wang, Ruifeng Gao, and Yuanqing Zhu. "A Zero-Dimensional Mixing Controlled Combustion Model for Real Time Performance Simulation of Marine Two-Stroke Diesel Engines." Energies 12, no. 10 (2019): 2000. http://dx.doi.org/10.3390/en12102000.

Full text

Abstract:

The paper presents a performance prediction model of marine low-speed two-stroke diesel engines based on an advanced MCC (mixture controlled combustion) model coupled with a fuel injection model. Considering the time of real calculation, the so-called “concentrated exhausting gas” scavenging model and the working process model are used in the present work, and improved by introducing the ratio of pure combustion product over the total gas mass in the cylinder as an expression of the working medium components. The reaction rate model in the zero-dimensional MCC model is improved by introducing

APA, Harvard, Vancouver, ISO, and other styles

24

Liang, Xingyu, Ziyang Liu, Kun Wang, et al. "Impact of Pilot Injection on Combustion and Emission Characteristics of a Low-Speed Two-Stroke Marine Diesel Engine." Energies 14, no. 2 (2021): 417. http://dx.doi.org/10.3390/en14020417.

Full text

Abstract:

Low-speed two-stroke marine diesel engines dominate the modern global long-distance transportation market; with the increasingly stringent regulations, the combustion and emissions of these engines is gaining intense interest. The primary objective of the present study was to understand the effects of air-fuel mixing by pilot injection strategy on the combustion and emission characteristics of the marine diesel engines through a numerical study. Specifically, a computational fluid dynamic (CFD) model was established and validated by experimental data for a typical low-speed two-stroke marine d

APA, Harvard, Vancouver, ISO, and other styles

25

Wang, Xinyan, Jun Ma, and Hua Zhao. "Analysis of the effect of bore/stroke ratio and scavenge port angles on the scavenging process in a two-stroke boosted uniflow scavenged direct injection gasoline engine." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 232, no. 13 (2017): 1799–814. http://dx.doi.org/10.1177/0954407017735383.

Full text

Abstract:

In this study, a two-stroke boosted uniflow scavenged direct injection gasoline (BUSDIG) engine was proposed and researched to achieve aggressive engine downsizing and downspeeding. Compared to loop or cross scavenged two-stroke engines, the BUSDIG engine can achieve excellent scavenging performance and be operated with higher boost pressure as well as the absence of air and fuel short-circuiting. As a fundamental engine geometric parameter, the bore/stroke (B/S) ratio would directly affect the scavenging process in the uniflow scavenged two-stroke engine. Three-dimensional computational fluid

APA, Harvard, Vancouver, ISO, and other styles

26

Weerasinghe, Rohitha, and Sandra Hounsham. "Small Engines as Bottoming Cycle Steam Expanders for Internal Combustion Engines." Journal of Combustion 2017 (2017): 1–8. http://dx.doi.org/10.1155/2017/1742138.

Full text

Abstract:

Heat recovery bottoming cycles for internal combustion engines have opened new avenues for research into small steam expanders (Stobart and Weerasinghe, 2006). Dependable data for small steam expanders will allow us to predict their suitability as bottoming cycle engines and the fuel economy achieved by using them as bottoming cycles. Present paper is based on results of experiments carried out on small scale Wankel and two-stroke reciprocating engines as air expanders and as steam expanders. A test facility developed at Sussex used for measurements is comprised of a torque, power and speed me

APA, Harvard, Vancouver, ISO, and other styles

27

Yang, Zhiyuan, Qinming Tan, and Peng Geng. "Combustion and Emissions Investigation on Low-Speed Two-Stroke Marine Diesel Engine with Low Sulfur Diesel Fuel." Polish Maritime Research 26, no. 1 (2019): 153–61. http://dx.doi.org/10.2478/pomr-2019-0017.

Full text

Abstract:

Abstract With the implementation and expansion of international sulfur emission control areas, effectively promoted the marine low sulfur diesel fuel (MLSDF) used in marine diesel engines. In this study, a large low-speed, two-stroke, cross-head, common rail, electronic fuel injection marine diesel engine (B&W 6S35ME-B9) was used for the study. According to diesel engine’s propulsion characteristics, experiments were launched respectively at 25%, 50%, 75%, 100% load working conditions with marine low sulfur diesel fuel to analyze the fuel consumption, combustion characteristics and emissio

APA, Harvard, Vancouver, ISO, and other styles

28

Grabowski, Łukasz, Konrad Pietrykowski, and Paweł Karpiński. "Energetic Analysis of the Aircraft Diesel Engine." MATEC Web of Conferences 252 (2019): 05012. http://dx.doi.org/10.1051/matecconf/201925205012.

Full text

Abstract:

The analysis of the distribution of thermal energy generated during the combustion process in internal combustion engines and the estimation of individual losses are important regarding performance and efficiency. The article analyses the energy balance of the designed two-stroke opposed piston diesel engines with offset, i.e. the angle by which the crankshaft at the side of exhaust ports is ahead of the crankshaft at the side of intake ports. Based on the developed zero-dimensional engine model, a series of simulations were performed in steady-state conditions using the AVL BOOST software. Th

APA, Harvard, Vancouver, ISO, and other styles

29

Adair, J., D. Olsen, and A. Kirkpatrick. "Exhaust Tuning of Large-Bore, Multicylinder, Two-Stroke, Natural Gas Engines." International Journal of Engine Research 7, no. 2 (2006): 131–41. http://dx.doi.org/10.1243/146808705x58297.

Full text

Abstract:

In this paper, computational modelling of the exhaust system of two types of large-bore, multicylinder, two-stroke engine is performed. The airflow performance of a four-cylinder V-bank Cooper GMV-4TF engine and a six-cylinder in-line Clark TLA engine is simulated. The simulation includes the computation of pressure wave propagation in the exhaust manifold. Using a modified method of the steepest ascent numerical technique, tuned exhaust manifolds are designed for each engine with the objective of reduced NO emissions. The NO reduction is accomplished by increasing the trapped cylinder mass an

APA, Harvard, Vancouver, ISO, and other styles

30

Qiu, Shuang, Michael Chung Kay Wong, and Paul Chi Hang Li. "Wettability-Based Colorimetric Test Strips for Gasoline/Oil Mixture Differentiation." Advanced Materials Research 1105 (May 2015): 331–34. http://dx.doi.org/10.4028/www.scientific.net/amr.1105.331.

Full text

Abstract:

As inspired by the pH paper for the determination of the acidity levels of solutions, we have developed a wettability-based colorimetric test strip to differentiate the composition of gasoline/oil mixtures. These mixtures are widely used in two-stroke motor engines. A method that is rapid, low cost and simple-to-use will facilitate the differentiation of these gasoline/oil mixtures, and ensure the use of these mixtures in the proper ratios in two-stroke engines for optimized engine performance and endurance. An inverse opal film (IOF) consisting of nanopores was synthesized on the silicon stri

APA, Harvard, Vancouver, ISO, and other styles

31

Hill, P. G., and B. Douville. "Relating Burning Rate and NO Formation to Pressure Development in Two-Stroke Diesel Engines." Journal of Energy Resources Technology 119, no. 2 (1997): 129–36. http://dx.doi.org/10.1115/1.2794976.

Full text

Abstract:

A multizone thermodynamic method has been developed to determine combustion rate and NO formation from measured cylinder pressures and performance of two-stroke diesel engines. Integral to the analytical method is a nonlinear fit to the combustion chamber heat loss; the fit is consistent with the overall energy balance and with measured fuel consumption rate and exhaust temperature. The method assumes equilibrium combustion properties except for NO, whose relatively slow formation is estimated using the extended Zeldovich mechanism in the post-flame gas during a period of one mixing time. Appl

APA, Harvard, Vancouver, ISO, and other styles

32

Meier, E., and J. Czerwinski. "Turbocharging Systems With Control Intervention for Medium Speed Four-Stroke Diesel Engines." Journal of Engineering for Gas Turbines and Power 111, no. 3 (1989): 560–69. http://dx.doi.org/10.1115/1.3240291.

Full text

Abstract:

The turbocharging systems of highly boosted four-stroke diesel engines (BMEP 25 bar/363 psi) have to cope with two basic problems: lack of air and compressor surge at reduced engine speed. In the case of medium speed engines for ship propulsion and stationary applications, the following three control interventions have proved to be successful solutions: (1) waste gating air or exhaust gas at full load and speed, (2) using a compounded or independent exhaust gas driven power turbine that can be shut off at part load and speed, and (3) blowing air from the compressor outlet to the turbine inlet

APA, Harvard, Vancouver, ISO, and other styles

33

Georgiou, Charalampos, and Ulugbek Azimov. "Analysis and Multi-Parametric Optimisation of the Performance and Exhaust Gas Emissions of a Heavy-Duty Diesel Engine Operating on Miller Cycle." Energies 13, no. 14 (2020): 3724. http://dx.doi.org/10.3390/en13143724.

Full text

Abstract:

A major issue nowadays that concerns the pollution of the environment is the emissions emerging from heavy-duty internal combustion engines. Such concern is dictated by the fact that the electrification of heavy-duty transport still remains quite challenging due to limitations associated with mileage, charging speed and payload. Further improvements in the performance and emission characteristics of conventional heavy-duty diesel engines are required. One of a few feasible approaches to simultaneously improve the performance and emission characteristics of a diesel engine is to convert it to o

APA, Harvard, Vancouver, ISO, and other styles

34

Foteinos, Michael I., Alexandros Papazoglou, Nikolaos P. Kyrtatos, Anastassios Stamatelos, Olympia Zogou, and Antiopi-Malvina Stamatellou. "A Three-Zone Scavenging Model for Large Two-Stroke Uniflow Marine Engines Using Results from CFD Scavenging Simulations." Energies 12, no. 9 (2019): 1719. http://dx.doi.org/10.3390/en12091719.

Full text

Abstract:

The introduction of modern aftertreatment systems in marine diesel engines call for accurate prediction of exhaust gas temperature, since it significantly affects the performance of the aftertreatment system. The scavenging process establishes the initial conditions for combustion, directly affecting exhaust gas temperature, fuel economy, and emissions. In this paper, a semi-empirical zero-dimensional three zone scavenging model applicable to two-stroke uniflow scavenged diesel engines is updated using the results of CFD (computational fluid dynamics) simulations. In this 0-D model, the engine

APA, Harvard, Vancouver, ISO, and other styles

35

Korakianitis, T., L. Meyer, M. Boruta, and H. E. McCormick. "Introduction and Performance Prediction of a Nutating-Disk Engine." Journal of Engineering for Gas Turbines and Power 126, no. 2 (2004): 294–99. http://dx.doi.org/10.1115/1.1635394.

Full text

Abstract:

A new type of internal combustion engine and its thermodynamic cycle are introduced. The core of the engine is a nutating nonrotating disk, with the center of its hub mounted in the middle of a Z-shaped shaft. The two ends of the shaft rotate, while the disk nutates. The motion of the disk circumference prescribes a portion of a sphere. A portion of the area of the disk is used for intake and compression, a portion is used to seal against a center casing, and the remaining portion is used for expansion and exhaust. The compressed air is admitted to an external accumulator, and then into an ext

APA, Harvard, Vancouver, ISO, and other styles

36

Kim, Cheonghwan, Sungho Park, Myeongkyu Kim, and Eunsoo Ahn. "Numerical Study on Transfer Port Design for Scavenging Performance in Small Two-stroke Engines." Journal of the Korean Society of Propulsion Engineers 24, no. 6 (2020): 28–44. http://dx.doi.org/10.6108/kspe.2020.24.6.028.

Full text

APA, Harvard, Vancouver, ISO, and other styles

37

Hooper, Peter R. "Investigation into a stepped-piston engine solution for automotive range-extender vehicles and hybrid electric vehicles to meet future green transportation objectives." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 232, no. 3 (2017): 305–17. http://dx.doi.org/10.1177/0954407017698304.

Full text

Abstract:

Securing the objectives for future high-efficiency low-carbon-dioxide vehicles is a key target for automotive manufacturers. This paper considers a high-durability two-stroke cycle engine in terms of performance and computational modelling of the emissions characteristics for automotive range-extender or hybrid electric vehicle power plant application. The engine uses novel segregated pump charging via the application of stepped pistons, and a comparison of the engine characteristics is made with those of a comparable four-stroke cycle engine of similar expected power output (more than 60 kW/l

APA, Harvard, Vancouver, ISO, and other styles

38

Anggono, Willyanto, Mitsuhisa Ichiyanagi, Reina Saito, et al. "Airflow Characteristics Investigation of a Diesel Engine for Different Helical Port Openings and Engine Speeds." Journal of Engineering and Technological Sciences 53, no. 3 (2021): 210306. http://dx.doi.org/10.5614/j.eng.technol.sci.2021.53.3.6.

Full text

Abstract:

Intake airflow characteristics are essential for the performance of diesel engines. However, previous investigations of these airflow characteristics were mostly performed on two-valve engines despite the difference between the airflow of two-valve and four-valve engines. Therefore, in this study, particle image velocimetry (PIV) investigations were performed on a four-valve diesel engine. The investigations were conducted under different engine speeds and helical port openings using a swirl control valve (SCV). The results suggest that the position of the swirl center does not significantly s

APA, Harvard, Vancouver, ISO, and other styles

39

Qiao, Yuan, Li Lin, Wei Zhong, and Kaisheng Huang. "Investigation on the Performance Characteristics of 2-Stroke Heavy Fuel Light Aeroengine (2SHFLA) with Different Fuel Injection Systems: Modeling and Comparative Simulation." Energies 13, no. 19 (2020): 5136. http://dx.doi.org/10.3390/en13195136.

Full text

Abstract:

Extensive application of small and medium-sized unmanned aerial vehicles (UAVs) have already made the development of corresponding power system a research hotspot nowadays. Two-stroke heavy fuel light aeroengine (2SHFLA) is selected as the research focus in this paper. The working principle of 2SHFLA with different fuel injection systems is elaborated systematically. By dividing the initial prototype engine into several subsystems, the simulation platform is set up with its key model parameters accurately calibrated against the test data. Simulation platforms of the other two types of engines

APA, Harvard, Vancouver, ISO, and other styles

40

Adebayo, A., and Omojola Awogbemi. "Effects of Fuel Additives on Performance and Emission Characteristics of Spark Ignition Engine." European Journal of Engineering Research and Science 2, no. 3 (2017): 30. http://dx.doi.org/10.24018/ejers.2017.2.3.289.

Full text

Abstract:

This research investigated the effects of addition of ethanol to gasoline with the aim of improving the performance and emission characteristics of Spark Ignition (SI) engine. Four samples of gasoline-ethanol blend were prepared, namely 100% ethanol, 100% gasoline, 95% gasoline + 5% ethanol and 90% gasoline+10% ethanol, and were labeled sample A, B, C and D respectively. Physicochemical analysis was carried out on the four samples while sample B, C, and D were used to run a single cylinder, two stroke, air cooled SI engine to determine the performance characteristics of the engine at four engi

APA, Harvard, Vancouver, ISO, and other styles

41

He, Yuhai, Peilin Zhou, Liangtao Xie, and Jiyun Zhang. "Design and experimental development of a new electronically controlled cylinder lubrication system for the large two-stroke crosshead diesel engines." International Journal of Engine Research 20, no. 8-9 (2019): 986–1000. http://dx.doi.org/10.1177/1468087418824216.

Full text

Abstract:

Accurate, stable and reliable lubrication for the cylinders is very important to ensure the trouble-free operation of the marine diesel engines. A new electronically controlled cylinder lubrication system has been developed to remedy the defects of the conventional mechanical lubrication system. This new system’s design method, composition and implementation are described. The sensitivity tests are conducted on the test bench and the verification tests are also fulfilled on operating vessels. The main performance data are as follows: oil injection pressure about 3.0 MPa, oil injection timing p

APA, Harvard, Vancouver, ISO, and other styles

42

Li, Bin, and Shou Jun Zhang. "MV “CRYSTAL STAR” Diesel Turbocharger Surge Cause Analysis and Troubleshooting." Applied Mechanics and Materials 672-674 (October 2014): 1562–67. http://dx.doi.org/10.4028/www.scientific.net/amm.672-674.1562.

Full text

Abstract:

Currently shipping costs are increasing sharply due to the rising oil prices. In order to reduce shipping costs, most low-speed two-stroke diesel engines run at low speeds to reduce fuel oil consumption, and this measure might result turbocharger surge. For modern marine diesel engines, the exhaust gas turbochargers are becoming more and more important; their working conditions have a direct impact on the performance of diesel engines, consequently affecting the operation of the ship. Surge will fail a turbocharger to achieve the supercharging ratio, damage the turbocharger components and even

APA, Harvard, Vancouver, ISO, and other styles

43

Trenc, F., F. Bizjan, and A. Hribernik. "Influence of the Exhaust System on Performance of a 4-Cylinder Supercharged Engine." Journal of Engineering for Gas Turbines and Power 120, no. 4 (1998): 855–60. http://dx.doi.org/10.1115/1.2818478.

Full text

Abstract:

Twin entry radial turbines are mostly used to drive compressors of small and medium size 6-cylinder diesel engines where the available energy of the undisturbed exhaust pulses can be efficiently used to drive the turbine of a turbocharger. Three selected cylinders feed two separated manifold branches and two turbine inlets and prevent negative interaction of pressure waves and its influence on the scavenging process of the individual cylinders. In the case of a four-stroke, 4-cylinder engine, two selected cylinders, directed by the firing order, can be connected to one (of the two) separated m

APA, Harvard, Vancouver, ISO, and other styles

44

Konyukov, Vyacheslav Leontievich. "Analysis of operating characteristics of 7S50MC diesel engine under direct air management." Vestnik of Astrakhan State Technical University. Series: Marine engineering and technologies 2020, no. 1 (2020): 72–82. http://dx.doi.org/10.24143/2073-1574-2020-1-72-82.

Full text

Abstract:

The paper provides a theoretical analysis of the operational performance of a marine two-stroke diesel engine in a wide range of modes, operating on a helical characteristic. Reducing the diesel load causes a decrease in the coefficient of excess air for combustion, which is characteristic of two-stroke diesel engines with a relatively high boost pressure. To control the air flow rate, it is proposed to use an adjustable nozzle apparatus as part of a turbine of a turbocharger unit. Changing the angle of the blades of an adjustable nozzle apparatus by turning them, an impact was made on the cha

APA, Harvard, Vancouver, ISO, and other styles

45

Scappin, Fabio, Sigurður H. Stefansson, Fredrik Haglind, Anders Andreasen, and Ulrik Larsen. "Validation of a zero-dimensional model for prediction of NOx and engine performance for electronically controlled marine two-stroke diesel engines." Applied Thermal Engineering 37 (May 2012): 344–52. http://dx.doi.org/10.1016/j.applthermaleng.2011.11.047.

Full text

APA, Harvard, Vancouver, ISO, and other styles

46

Liang, Xingyu, Xinyi Cao, Fei Zhang, Enxing Zhang, Peijian Yang, and Hanzhengnan Yu. "Comparison of the Performance of Different Mechanisms on Soot Generation of Low-Speed Two-Stroke Marine Engines." Energy Procedia 158 (February 2019): 4572–78. http://dx.doi.org/10.1016/j.egypro.2019.01.751.

Full text

APA, Harvard, Vancouver, ISO, and other styles

47

Liu, Rui, Xiaoping Su, Xiaodong Miao, et al. "Combustion characteristics of a two-stroke spark ignition UAV engine fuelled with gasoline and kerosene (RP-3)." Aircraft Engineering and Aerospace Technology 91, no. 1 (2018): 163–70. http://dx.doi.org/10.1108/aeat-03-2018-0112.

Full text

Abstract:

Purpose The purpose of this paper is to compare the combustion characteristics, including the combustion pressure, heat release rate (HRR), coefficient of variation (COV) of indicated mean effective pressure (IMEP), flame development period and combustion duration, of aviation kerosene fuel, namely, rocket propellant 3 (RP-3), and gasoline on a two-stoke spark ignition engine. Design/methodology/approach This paper is an experimental investigation using a bench test to reflect the combustion performance of two-stroke spark ignition unmanned aerial vehicle (UAV) engine on gasoline and RP-3 fuel

APA, Harvard, Vancouver, ISO, and other styles

48

Каримова, Д. М., А. Ф. Хайдаров, and Г. Ю. Климентова. "STUDY OF THE COMPATIBILITY OF S-CONTAINING PHENOLIC ANTIOXIDANT ADDITIVES AND OILS FOR TWO-STROKE ENGINES." Южно-Сибирский научный вестник, no. 2(36) (April 30, 2021): 94–97. http://dx.doi.org/10.25699/sssb.2021.36.2.010.

Full text

Abstract:

Двухтактные двигатели за счет простоты своей конструкции, небольшого количества деталей и компактности пользуются большим спросом во многих отраслях, преимущественно для садовой техники и мотоциклов. В таких двигателях используется бензо-масляная смесь для создания масляной пленки, обеспечения достаточной смазки трущихся деталей и защиты их от коррозии. К современному моторному маслу для двухтактного двигателя существует ряд требований: полное выгорание без образования кокса, золы, отложений, хорошее растворение и перемешивание с топливом, противоизносные, антикоррозионные, смазывающие свойств

APA, Harvard, Vancouver, ISO, and other styles

49

Ciampolini, Marco, Simone Bigalli, Francesco Balduzzi, Alessandro Bianchini, Luca Romani, and Giovanni Ferrara. "CFD Analysis of the Fuel–Air Mixture Formation Process in Passive Prechambers for Use in a High-Pressure Direct Injection (HPDI) Two-Stroke Engine." Energies 13, no. 11 (2020): 2846. http://dx.doi.org/10.3390/en13112846.

Full text

Abstract:

The research on two-stroke engines has been focused lately on the development of direct injection systems for reducing the emissions of hydrocarbons by minimizing the fuel short-circuiting. Low temperature combustion (LTC) may be the next step to further improve emissions and fuel consumption; however, LTC requires unconventional ignition systems. Jet ignition, i.e., the use of prechambers to accelerate the combustion process, turned out to be an effective way to perform LTC. The present work aims at proving the feasibility of adopting passive prechambers in a high-pressure, direct injection,

APA, Harvard, Vancouver, ISO, and other styles

50

Ganapathy, Thirunavukkarasu, Parkash Gakkhar, and Krishnan Murugesan. "An analytical and experimental study of performance on jatropha biodiesel engine." Thermal Science 13, no. 3 (2009): 69–82. http://dx.doi.org/10.2298/tsci0903069g.

Full text

Abstract:

Biodiesel plays a major role as one of the alternative fuel options in direct injection diesel engines for more than a decade. Though many feed stocks are employed for making biodiesel worldwide, biodiesel derived from domestically available non-edible feed stocks such as Jatropha curcas L. is the most promising alternative engine fuel option especially in developing countries. Since experimental analysis of the engine is pricey as well as more time consuming and laborious, a theoretical thermodynamic model is necessary to analyze the performance characteristics of jatropha biodiesel fueled di

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!