Relevant bibliographies by topics / 2-stroke engine

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic '2-stroke engine'

Author: Grafiati
Published: 4 June 2021
Last updated: 25 July 2025

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Journal articles on the topic "2-stroke engine"

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Myo, Thura, and Aung Sandar. "Modifications for Conversion of Conventional Four Stroke Engine to a Six Stroke Engine." International Journal of Trend in Scientific Research and Development 2, no. 4 (2018): 1361–64. https://doi.org/10.31142/ijtsrd14311.

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Considering the climate change and the shortage of non renewable energy resources, the interests in the waste heat recovery from internal combustion engines is one of the opportunities for economizing of energy consumption. In an internal combustion engine, a great amount of fuel energy is wasted in the form of heat due to thermal limitations. Roughly one third of fuel energy is converted to mechanical power and the rest is released to the ambience in the form of heat. To save the non renewable energy resources, the interest in waste heat recovery has been growing. A six stroke internal combus
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Shimada, Kazutaka, and Motoki Inazumi. "Transition of Engine Technology (2-Stroke Diesel Engines)." Journal of The Japan Institute of Marine Engineering 51, no. 5 (2016): 650–51. http://dx.doi.org/10.5988/jime.51.650.

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Nurdiansyah, Dedi, Sudjito Soeparman, and Eko Siswanto. "Studi Komparasi Performa Motor Bakar 4 Tak Karburator dan Motor Bakar 6 Tak Mub-2 Karburator Berbahan Bakar Pertamax." Jurnal Rekayasa Mesin 12, no. 3 (2021): 643–51. http://dx.doi.org/10.21776/ub.jrm.2021.012.03.14.

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This paper describes the comparison of the performance of a 4 stroke carburetor motorbike with the MUB-2 six-stroke engine with additional combustion duration and two working strokes. The increase in combustion duration aims to re-burn combustible species that have not been completely burned in the first combustion. This study used a 4 stroke motor with a capacity of 125 cc and then modified it into a 6 stroke motorbike with twice the duration of combustion. The observed local atmospheric conditions at a relative humidity of about 76% RH, and the ambient temperature and pressure were around 24
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Ivanov, A. B., D. A. Man’shev, and S. A. Kriushin. "Two-stroke gasoline engine lubricants." World of petroleum products 1 (2022): 48–58. http://dx.doi.org/10.32758/2782-3040-2022-0-1-48-58.

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The article considers the design and lubrication of small 2-stroke engines installed on snowmobiles, quad bikes, motorcycles and drones. The compositions of the 2-stroke engine oils, base oils and additives, actual specification JASO, NMMA, API, TISI and ISO are analysed. Concern the short characteristics of JASO engine test methods.
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Markov, V. A., F. B. Barchenko, E. A. Savastenko, A. A. Savastenko, Sh R. Lotfullin, and V. A. Neverov. "Forcing a Four-Stroke Engine by Switching it to a Two-Stroke Cycle at Low-Speed Modes." Proceedings of Higher Educational Institutions. Маchine Building, no. 2 (743) (February 2022): 38–52. http://dx.doi.org/10.18698/0536-1044-2022-2-38-52.

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Improving the dynamic qualities of internal combustion engines and the throttle response of vehicles equipped with them is an urgent problem in engine building. To solve it, we suggest switching a four-stroke engine to a two-stroke cycle at low-speed modes. Within the study, we found that the worst indicators of fuel efficiency of two-stroke engines are partially compensated by the best indicators of their power density. We took a close look at the switching of the 2 / 4SIGHT gasoline engine of the British company Ricardo from a four-stroke cycle to a two-stroke cycle. To implement the switchi
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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.

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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
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S Patel, Lalit, and Ratnesh K Shukla. "A Comparative Experimental Study of Compressed Air Engine in Existing Single Cylinder 2 Stroke and 4 Stroke Engines." International Journal of Scientific Engineering and Research 5, no. 10 (2017): 1–5. https://doi.org/10.70729/ijser171918.

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Mattarelli, Enrico, Carlo Alberto Rinaldini, Luca Marmorini, Stefano Caprioli, Francesco Legrottaglie, and Francesco Scrignoli. "2-Stroke RCCI Engines for Passenger Cars." Energies 15, no. 3 (2022): 1173. http://dx.doi.org/10.3390/en15031173.

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Reactivity Controlled Compression Ignition (RCCI) is one of the most promising solutions among the low temperature combustion concepts, in terms of thermal efficiency and pollutant emissions. However, for values of brake mean effective pressure higher than 10 bar, in-cylinder peak pressure rise rates tend to be too high, limiting the specific power of any 4-Stroke (4S) engine. Such a limitation can be canceled by moving to the 2-Stroke (2S) cycle. Among many alternatives, the “Uniflow” scavenging system with exhaust poppet valves on the cylinder head allows the designer to reproduce the same i
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Gijssel, Chris van, and Roelf Drijfholt. "Distillate Fuel Use Wartsila 2-Stroke Engine Practical Experience." Journal of The Japan Institute of Marine Engineering 44, no. 6 (2009): 865–69. http://dx.doi.org/10.5988/jime.44.865.

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Fujibayashi, Takahiro. "Transition of Engine Technology - Hitachi Zosen’s 2-Stroke Diesel Engines." Journal of The Japan Institute of Marine Engineering 51, no. 5 (2016): 652–53. http://dx.doi.org/10.5988/jime.51.652.

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Dissertations / Theses on the topic "2-stroke engine"

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Ma, Jun. "Numerical and experimental study of a boosted uniflow 2-stroke engine." Thesis, Brunel University, 2014. http://bura.brunel.ac.uk/handle/2438/9727.

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Engine downsizing is one of the most effective ways to reduce vehicle fuel consumption. Highly downsized (>50%) 4-stroke gasoline engines are constrained by knocking combustion, thermal and mechanical limits as well as high boost. Therefore a research work for a highly downsized uniflow 2-stroke engine has been proposed and carried out to unveil its potential. In this study, one-dimensional (1D) engine simulation and three-dimensional (3D) computational fluid dynamic analysis were used to predict the performance of a boosted uniflow 2-stroke DI gasoline engine. This was experimentally compleme
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Ojapah, Mohammed. "Experimental studies of performance and emissions in a 2/4-stroke engine." Thesis, Brunel University, 2014. http://bura.brunel.ac.uk/handle/2438/9188.

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Direct Injection (DI) gasoline engines are staging a come-back because of its potential for improved fuel economy through principally the engine down-sizing by boosting, stratified charge combustion and Controlled Auto Ignition (CAI) at part load operations. The problem with the Spark Ignition (SI) engine is its inherent low part-load efficiency. This arises due to the pumping loses that occur when the throttle closes or partially opens. One way of decreasing the pumping losses is to operate the engine lean or by adding residual gases. It is not possible to operate the engine unthrottled with
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Jin, Wei. "CFD modelling and validation of a large 2-stroke marine diesel engine." Thesis, University of Strathclyde, 2014. http://digitool.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=25989.

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With the increased understanding of the physical processes of the large 2-stroke marine engine and the corresponding numerical models as turbulence, injection, evaporation and chemical combustion, it has become realisable to investigate the whole working processes using Computational Fluid Dynamics (CFD). However, CFD itself needs to be validated to produce reliable results. The focus of this thesis is on the CFD validation of the large 2-stroke marine diesel engine working processes. The turbulence models and the wall functions in the CFD solver were firstly tested using two basic 2D cases to
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Thein, Kévin Jean Lucien. "Evaluation of combustion concepts and scavenging configurations in a 2-Stroke compression-ignition engine for future automotive powerplants." Doctoral thesis, Universitat Politècnica de València, 2021. http://hdl.handle.net/10251/164044.

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[ES] El trabajo de investigación presentado en esta tesis es el resultado de varios años dedicados al desarrollo, la implementación y la optimización de dos tecnologías combinadas: un concepto de combustión innovador y una arquitectura de motor de nuevo diseño. Esta investigacion se ha realizado en el marco de una colaboración con Renault SA, como continuación de las actividades realizadas en el proyecto europeo POWERFUL (POWERtrain for FUture Light-duty vehicles) por un lado,y en el marco del proyecto europeo REWARD (Real World Advanced technologies foR Diesel engines), devenido como continua
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Hlaváč, Štěpán. "Dvoudobý motor pro malý motocykl." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2008. http://www.nusl.cz/ntk/nusl-227891.

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This diploma thesis contains an engineering design of a two-stroke engine for small motorcycle. In the first part, the background research of these motors was made. Main dimensions of the engine and a calculation of the forces acting in crank mechanism were determined. Further check stress analysis of connection rod and calculation using a finite element method were performed. This diploma thesis also includes virtual 3D models of all designed parts and a drawing of cross section of the motor.
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Böhm, Milan. "Dvoudobý motor pro malou mechanizaci." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2008. http://www.nusl.cz/ntk/nusl-227890.

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This diploma thesis includes progress constructional design of 2 - stroke engine for small mechanization, using modern tools of computer aided design. In the first part is mentioned short summary contemporary types small mechanization with 2 - stroke engines. Follows part devoted conceptual design with calculation of the main dimensions of engine cylinder. After assesment strength load of cranked mechanism, is effected stress analysis of connection rod, whose design and modeling is part of work, how by the help of analytical figures from appropriate literature so by final element method. Last
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Cagin, Stéphanie. "Méta-modèles réduits et séparés du comportement de balayage d'un moteur Diesel 2-temps pour l'exploration évolutionnaire des espaces de solutions." Thesis, Bordeaux, 2015. http://www.theses.fr/2015BORD0383/document.

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L’utilisation de techniques numériques lors de la conception d’un produit s’est largement généralisée au cours des 30 dernières années. Pourtant, la lenteur des calculs et la spécialisation des modèles numériques restent problématiques.Nous avons donc choisi de développer des modèles réduits du comportement de balayage sur un moteur Diesel 2-temps à lumières. Ces modèles sont analytiques, génériques, rapides d’utilisation et permettent d’éliminer les problématiques de traitement numérique. Ils sont aussi des instruments performants dans la recherche de solutions de conception. Une modélisation
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Chien, Yu-Hua, and 簡煜樺. "2-stroke uniflow downsized engine." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/97tc92.

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Liu, Chia-yang, and 劉加陽. "In-Cylinder Flow Characteristic of a Four-Stroke 2-Valve Internal Combustion Engine." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/a93ndt.

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碩士<br>國立臺灣科技大學<br>機械工程系<br>95<br>Abstract The gasoline direct injection (GDI) has been engaged to the combustion system of an automotive engine since 1995 by the Mitsubishi Motor. It has been well recognized that the fuel consumption, exhaust emission, and engine performance can be drastically increased by application of the GDI technology. The GDI technology usually must be combined with the in-cylinder flow motion in order to regulate the mixture concentration distribution in the cylinder to a target pattern. By using this technology, the mixture preparation in the engine cylinder can be hom
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Tsai, Sheu Chin, and 許進財. "The Analysis and Measurement of the White Smoke Opacity at Single Cylinder 2-Stroke Engine." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/28409612573664555333.

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碩士<br>國立中興大學<br>機械工程學系<br>90<br>White smoke is the most obvious part of the exhaust emitted from Two-Stroke engines. The method for smoke testing currently used in Taiwan is the rapid acceleration test under no load. The current situation of white smoke emission was studied in this paper. It was found that the white smoke is gamma distributed. Four ways to treat the original smoke data were carried out and the results showed that the averaged peak values and the maximum integral values are the most suitable ways to define the white smoke level of motorcycles. The components of
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Books on the topic "2-stroke engine"

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Meldrum, Jay. Clean Snowmobile Challenge - 2: The Revival of the 2-stroke Engine and Studying Flex Fuel Engines. SAE International, 2017. http://dx.doi.org/10.4271/srp-003.

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Briggs & Stratton Corporation., ed. 2 cycle engine service and repair instructions. Briggs & Stratton Corp., 1986.

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Engineers, Society of Automotive, and International Off-Highway & Powerplant Congress & Exposition (1998 : Milwaukee, Wis.), eds. Emissions in 2-stroke and small 4-stroke engines. Society of Automotive Engineers, 1998.

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G, Maher Kevin M., ed. Mercury outboards.: All 2-stroke engines. Seloc Publications, 2006.

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Publications, Clymer, ed. Clymer Evinrude/Johnson: 2-stroke outboard shop manual 2-70, 1995-1998 : includes jet drive models. Primedia Intertec, 1999.

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Meldrum, Jay. Revival of the 2-Stroke Engine and Studying Flex Fuel Engines. SAE International, 2017.

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2/stroke thematic network: 2/stroke engine bibliography of publications including engine wear parts and surface treatment publications and patents. Manchester Metropolitan University, 1996.

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Meldrum, Jay S. Clean Snowmobile Challenge: The Revival of the 2-Stroke Engine and Studying Flex Fuel Engines. SAE International, 2017.

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Schuster. 2 Strokes Engines: 2 Strokes Exam ((Automotive Technology Ser.)). Delmar Pub, 1994.

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Engineers, Society of Automotive. Emissions in 2-Stroke and Small 4-Stroke Engines (Sp,). SAE International, 1998.

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Book chapters on the topic "2-stroke engine"

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Kazimierski, Zbyszko, and Jerzy Wojewoda. "Newly Developed 2-Stroke EHVE." In Externally Heated Valve Engine. Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-28355-5_5.

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Kazimierski, Zbyszko, and Jerzy Wojewoda. "Separate Settling Chambers in the Improved 2-Stroke EHVE." In Externally Heated Valve Engine. Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-28355-5_6.

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Bleuanus, Sebastiaan, Genny Paviotti, and Andrea Visintin. "The Ammonia2-4 EU-Funded Project: Demonstrating a 2- Stroke and 4-stroke Large Scale Ammonia Marine Engine." In Lecture Notes in Mobility. Springer Nature Switzerland, 2025. https://doi.org/10.1007/978-3-031-89444-2_107.

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Abstract Internal combustion engines running on ammonia are increasingly considered as important facilitator among research, industry and policy communities in reaching EU environmental goals. The overall aim of the Ammonia2–4 project is to demonstrate at full scale two types of dual fuel marine engines running on ammonia as main fuel: a 4-stroke engine and a 2-stroke medium-pressure ammonia fuel injection platform. Both engine innovations are expected to result in at least 80% less GHG emissions (including nitrous oxide emissions), NOx emissions below IMO Tier III regulations and a negligible
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Wickner, William, and Marilyn Rice Leonard. "E. coli preprotein translocase: A 6 stroke engine with 2 fuels and 2 piston rods." In Molecular Dynamics of Biomembranes. Springer Berlin Heidelberg, 1996. http://dx.doi.org/10.1007/978-3-642-61126-1_5.

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Cagin, Stéphanie, and Xavier Fischer. "Neuro-separated meta-model of the scavenging process in 2-Stroke Diesel engine." In Lecture Notes in Mechanical Engineering. Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-45781-9_5.

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Zhang, Yan, Hua Zhao, Mohammed Ojapah, and Alasdair Cairns. "CAI Combustion of Gasoline and its Mixture with Ethanol in a 2-Stroke Poppet Valve DI Gasoline Engine." In Lecture Notes in Electrical Engineering. Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-33841-0_5.

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Zhang, Y., and H. Zhao. "Lean boost CAI combustion in a 2-stroke poppet valve GDI engine." In Internal Combustion Engines: Performance, Fuel Economy and Emissions. Elsevier, 2013. http://dx.doi.org/10.1533/9781782421849.5.169.

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Zhang, Y., H. Zhao, M. Ojapah, and A. Cairns. "Analysis of CAI/HCCI combustion in a 2-stroke poppet valve engine." In Internal Combustion Engines: Improving Performance, Fuel Economy and Emission. Elsevier, 2011. http://dx.doi.org/10.1533/9780857095060.4.125.

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Prabu, A. "Behaviour of Oxygenated Biofuels in Engines." In Recent Technologies for Enhancing Performance and Reducing Emissions in Diesel Engines. IGI Global, 2020. http://dx.doi.org/10.4018/978-1-7998-2539-5.ch010.

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An experimental investigation was conducted to disclose the outcomes of oxygenate mixture as additives in Jatropha biodiesel on the performance, combustion, and emission characteristics of a direct injection compression ignition engine. The experiments were conducted in an instrumented single-cylinder, air-cooled, four-stroke, direct-injection diesel engine, equipped with data acquisition system, AC alternator, and an electric loading device. Four oxygenate additives, namely, Ethylene Glycol (C2H6O2), Di methyl Carbonate (C3H6O3), 2-Butoxyethanol (C6H14O2), &amp; Propylene Glycol (C3H8O2) were
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Kumar, Harish, and Himansh Kumar. "Experimental Investigation of Alcohol-Based Hybrid Biofuel From Used Cooking Oil Fueled in a CI Engine." In Advances in Chemical and Materials Engineering. IGI Global, 2024. http://dx.doi.org/10.4018/979-8-3693-5320-2.ch012.

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The current experimental study is centered on exploring the advantages of hybrid biofuel derived from used cooking oil (UCO), on the performance, combustion, and emission characteristics of a 4-stroke single-cylinder CI engine. The hybrid biofuel is based upon microemulsification of UCO, ethanol, and 2-butanol. The break thermal efficiency (BTE) of UCOHBF was almost comparable with used cooking oil-based biodiesel (B100) and B50 but slightly lower than B10 and B20 and petrodiesel. The brake specific fuel consumption (BSFC) of UCOHBF was lower than B100 and comparable with B50 but higher than B
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Conference papers on the topic "2-stroke engine"

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Hull, Walter, Jason Beu, Jeff Jorenby, et al. "Optimization of a Direct-Injected 2-Stroke Cycle Snowmobile." In Small Engine Technology Conference & Exposition. SAE International, 2003. http://dx.doi.org/10.4271/2003-32-0074.

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Ravenhill, Paul, Jeffrey Allen, Benajmin Smither, Gavin Farmer, Eric Demesse, and Philippe Grosch. "Fuel Injection for Low Emission 50cc 2-Stroke Scooter." In Small Engine Technology Conference & Exposition. SAE International, 2010. http://dx.doi.org/10.4271/2010-32-0020.

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Jajcevic, Dalibor, Matthias Fitl, Stephan Schmidt, Karl Glinsner, and Raimund Almbauer. "Exhaust System Simulation of a 2-Cylinder 2-Stroke Engine Including Heat Transfer Effects." In Small Engine Technology Conference & Exposition. SAE International, 2010. http://dx.doi.org/10.4271/2010-32-0035.

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Dabadie, J. C., J. Lavy, J. Favennec, and M. Dubus. "DI Two Stroke Engine Catalyst Development for 2 wheelers application." In Small Engine Technology Conference & Exposition. SAE International, 2001. http://dx.doi.org/10.4271/2001-01-1847.

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Coultas, David, Martyn Twigg, Richard O'Sullivan, and Neil Collins. "The Development and Application of 2-Stroke Catalysts for 2-Wheelers in Europe and Asia." In Small Engine Technology Conference & Exposition. SAE International, 2001. http://dx.doi.org/10.4271/2001-01-1821.

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Shibata, Yasuhiko, Yukio Matsushita, and Akihiko Hoshiba. "Four Stroke-Cycle 50PS Outboard Motor." In Small Engine Technology Conference & Exposition. Society of Automotive Engineers of Japan, 1997. http://dx.doi.org/10.4271/978480.

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&lt;div class="htmlview paragraph"&gt; &lt;/div&gt; &lt;div class="htmlview paragraph"&gt; &lt;/div&gt; &lt;div class="htmlview paragraph"&gt;This report describes the engineering challenges in the development of 4 stroke 50ps outboard motor. The goal was set to attain the top speed and acceleration performance comparable to the existing 2 stroke versions, while providing the advantages of 4 stroke engine, including the alleviated exhaust odor and operational noise, as well as consistent performance with stable rpm. Emphasis was also given to the trolling at low rpm (at 650rpm). Our engineerin
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Noda, Kenichi, Hideo Uzaki, and Hisashi Yano. "Development of JASO 2-Stroke Engine Oil Standards." In International Pacific Conference On Automotive Engineering. SAE International, 1993. http://dx.doi.org/10.4271/931938.

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Kai, Seiichi. "Development and Progress of the Exhaust-System Device for 2-Stroke Engines." In Small Engine Technology Conference & Exposition. SAE International, 1999. http://dx.doi.org/10.4271/1999-01-3332.

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Sogawa, Masafumi, Masahiko Kato, and Kimihiro Nonaka. "2 Stroke Fuel Injected Outboard Motor with Oxygen Sensor Feedback Control System." In Small Engine Technology Conference & Exposition. Society of Automotive Engineers of Japan, 1997. http://dx.doi.org/10.4271/978491.

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&lt;div class="htmlview paragraph"&gt; &lt;/div&gt; &lt;div class="htmlview paragraph"&gt; &lt;/div&gt; &lt;div class="htmlview paragraph"&gt;This paper describes new 2 stroke fuel injected spark ignition outboard motor equipped with unique oxygen sensor feed back control system to assure constantly optimized air/fuel ratio.&lt;/div&gt; &lt;div class="htmlview paragraph"&gt; &lt;/div&gt; &lt;div class="htmlview paragraph"&gt;First, the general concept and the engineering target of commercial model are explained, and then the design and arrangement of oxygen sensor feedback fuel injection contr
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Motoyama, Yuh, Takahiro Suzuki, Akihiko Ohkubo, and Takeo Yoshida. "04 Emission Reduction by Cylinder Wall Injection in 2-Stroke S.I. Engines." In Small Engine Technology Conference & Exposition. Society of Automotive Engineers of Japan, 2002. http://dx.doi.org/10.4271/2002-32-1773.

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&lt;div class="htmlview paragraph"&gt;A direct injection system in which fuel was injected through the cylinder wall was developed and detailed investigation was made for the purpose of reducing short-circuit of fuel in 2-stroke engines. As a result of dynamo tests using 430cc single cylinder engine, it was found that the injector was best attached at a location as close to TDC as possible on the rear transfer port side, and that the entire amount of fuel should be injected towards the piston top surface. Emissions were worsened if fuel was injected towards the exhaust port or spark plug. Alth
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Reports on the topic "2-stroke engine"

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Houston, Rodney, Greg Bell, and Steven Ahern. High Specific Power Output Direct Injection 2-Stroke Engine Applications. SAE International, 2005. http://dx.doi.org/10.4271/2005-32-0066.

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Defoort, Willson, and Olsen. L51849 Performance Evaluation of Exhaust Catalysts During the Initial Aging on Large Industrial Engines. Pipeline Research Council International, Inc. (PRCI), 2001. http://dx.doi.org/10.55274/r0011213.

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An investigation of catalyst performance during the initial aging process, providing insight into the deactivation rate of the catalyst and assisting in predicting the operational lifetime of the catalyst was preformed. The information gained through the test program provides a mechanism to assist in developing new technologies geared at reducing engine emission while providing improvements in efficiency, reliability, and operability for the aging industrial reciprocating engine fleet. Two natural gas lean burn engines, a 2-stroke, large bore slow speed and a 4-stroke medium bore medium speed,
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Beurlot, Kyle, and Timothy Jacobs. PR457-242002-R01 Hydrogen and Natural Gas Mixtures in 2 Stroke Engines for Methane Reductions. Pipeline Research Council International, Inc. (PRCI), 2025. https://doi.org/10.55274/r0000108.

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Large-bore natural gas two-stroke engines with lean-burn technology have been integral to the North American pipeline network for many years and will remain crucial for future gas transportation. As research focuses on achieving lower lean ignition limits, pre-combustion chambers have gained attention as a promising method to enhance combustion stability and engine reliability. However, retrofitting existing platforms with pre-combustion chambers may not always be financially viable, which calls for further exploration of alternative technologies that could reduce methane emissions from two-st
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Ladd, Stevens, and Olsen. PR-179-15212-R01 Methane Reduction Data Analysis for 2-Stroke Lean Burn Natural Gas Engines. Pipeline Research Council International, Inc. (PRCI), 2016. http://dx.doi.org/10.55274/r0011013.

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Existing test data from the Engines and Energy Conversion Laboratory and other sources are analyzed to examine the impact of retrofit technologies and operating parameters on greenhouse gas emissions. CO2, CH4, and CO2e (equivalent CO2) emissions are the focus of the study. The data analysis is focused on 4 main categories, engine performance maps, retrofit technology, uncontrolled parameters, and NOx permit level. Examination of the impact of HP replacement is also performed.
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Olsen and Neuner. PR-179-12207-R01 Performance Measurements of Oxidation Catalyst on an Exhaust Slipstream. Pipeline Research Council International, Inc. (PRCI), 2013. http://dx.doi.org/10.55274/r0010800.

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Oxidation catalysts are effective at reducing CO, formaldehyde, and VOCs as long as the catalyst temperature is above the light-off temperature for each species. It is important to understand the effects of temperature and space velocity on regulated species in order to effectively apply oxidation catalyst technology to lean burn engines, in particular 2-stroke engines that typically have lower exhaust temperatures. Various catalysts were tested on an exhaust slipstream coupled to a 4-stroke lean-burn engine which allows tests to be conducted at different temperatures and flow rates. The effec
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Baumgardner, Davis, and Olsen. PR-179-13205-R01 Field Evaluation of Oxidation Catalyst Degradation - 2-Stroke Lean-Burn NG Engine. Pipeline Research Council International, Inc. (PRCI), 2015. http://dx.doi.org/10.55274/r0010036.

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This study examines the degradation of an exhaust oxidation catalyst on a Cooper-Bessemer GMVH 12C2 gas engine. Critical parameters were determined, such as light-off temperature and reduction efficiency at 450 and 600?F. The catalyst surface was analyzed to examine the location and rate of poison deposition. Catalyst life was examined based on NESHAP guidelines. Catalyst life is strongly dependent on catalyst temperature and space velocity. For similar industrial applications, if the engine unit particulars are known, site operators can use the information in this study to predict when the ox
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Olsen, Daniel, Bryan Hackleman, and Rodrigo Bauza Tellechaea. PR-179-16207-R01 Oxidation Catalyst Degradation on a 2-Stroke Lean-Burn NG Engine - Washing. Pipeline Research Council International, Inc. (PRCI), 2019. http://dx.doi.org/10.55274/r0011586.

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Oxidation catalysts are often utilized to reduce carbon monoxide, formaldehyde, and volatile organic compounds in order to meet emissions regulations for large bore natural gas engines. These catalysts degrade over time and need to be replaced or regenerated to maintain emissions compliance. This work evaluates the effectiveness of catalyst regeneration, or catalyst washing. The evaluation is performed by utilizing field and laboratory slip streams combined with catalyst module performance (reduction efficiency) measurements and catalyst material surface analysis to quantify catalyst poisons.
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Olsen. PR-179-10201-R01 Characterization of Lubricating Oil Carry Over in a 2-Stroke LB NG Engine. Pipeline Research Council International, Inc. (PRCI), 2011. http://dx.doi.org/10.55274/r0010748.

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This project is driven by concerns over excessive cylinder lubrication in large bore two-stroke cycle natural gas engines. Excessive cylinder lubrication can lead to: (1) Increased operating costs due to high lubricating oil consumption, (2) Poisoning of catalytic converters, and (3) Increased pollutant emissions. These concerns can be addressed by reexamining lubrication rates and exploring advanced lubrication techniques. Catalyst poisoning and increased pollutant emissions occur when a portion of the cylinder lubricating oil in some form is passed through the cylinder and into the exhaust s
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Olsen. L51955 Improved Cyclic Pressure-Based PEMS Model. Pipeline Research Council International, Inc. (PRCI), 2002. http://dx.doi.org/10.55274/r0011269.

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Fast NO measurements were acquired from the exhaust ports of a large bore natural gas 2-stroke cycle engine. A comprehensive set of steady state data was also taken. An engine scavenging model was used to correlate the cycle resolved fast NO measurements with the steady state NO measurements. In-cylinder pressure measurements made with piezoelectric transducers were compared with the fast NO measurements.
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Olsen. PR-179-07200-R01 Evaluation of NOx Sensors for Control of Aftertreatment Devices. Pipeline Research Council International, Inc. (PRCI), 2008. http://dx.doi.org/10.55274/r0010985.

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Emissions reduction through exhaust aftertreatment is becoming more common. It is likely to play an important role in meeting new emissions regulations in the future. Currently, the predominate aftertreatment technology for NOX reduction in lean burn natural gas engines appears to be selective catalytic reduction (SCR). In SCR, a reducing agent is injected into the exhaust upstream of a catalyst. Supplying the optimal quantity of reagent is critical to effective application of SCR. If too little reagent is supplied then the NOx reduction efficiency may be too low. If too much reagent is provid
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