Academic literature on the topic 'Deactivation of cylinders'

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Journal articles on the topic "Deactivation of cylinders"

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Allen, Cody M., Dheeraj B. Gosala, Gregory M. Shaver, and James McCarthy. "Comparative study of diesel engine cylinder deactivation transition strategies." International Journal of Engine Research 20, no. 5 (2018): 570–80. http://dx.doi.org/10.1177/1468087418768117.

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Cylinder deactivation is an effective strategy to improve diesel engine fuel efficiency and aftertreatment thermal management when implemented through deactivation of both fueling and valve motion for a set of cylinders. Brake power is maintained by injecting additional fuel into the remaining activated cylinders. The initial deactivation of cylinders can be accomplished in various ways, the two most common options being to trap freshly inducted charge in the deactivated cylinders or to trap combusted gases in the deactivated cylinders. The choice of trapping strategy dictates the in-cylinder
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Lee, Nankyu, Jinil Park, Jonghwa Lee, Kyoungseok Park, Myoungsik Choi, and Wongyu Kim. "Estimation of Fuel Economy Improvement in Gasoline Vehicle Using Cylinder Deactivation." Energies 11, no. 11 (2018): 3084. http://dx.doi.org/10.3390/en11113084.

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Cylinder deactivation is a fuel economy improvement technology that has attracted particular attention recently. The currently produced cylinder deactivation engines utilize fixed-type cylinder deactivation in which only a fixed number of cylinders are deactivated. As fixed-type cylinder deactivation has some shortcomings, variable-type cylinder deactivation with no limit on the number of deactivated cylinders is under research. For variable-type cylinder deactivation, control is more complicated and production cost is higher than fixed-type cylinder deactivation. Therefore, it is necessary to
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Liu, Ying, and A. G. Kuznetsov. "An Analysis of the Working Process of a Diesel Engine under Cylinder Deactivation." Proceedings of Higher Educational Institutions. Маchine Building, no. 11 (716) (November 2019): 9–18. http://dx.doi.org/10.18698/0536-1044-2019-11-9-18.

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The effect of cylinder deactivation as a method of controlling a diesel engine working in partial load modes is usually justified based on the characteristics corresponding to the engine performance without cylinder deactivation. However, the results obtained through theoretical analysis and in practice have significant differences, since the working processes of activated and deactivated cylinders run in different ways. In this paper, a simulation method is used to analyze the working process of the diesel engine under cylinder deactivation. The working processes in activated and deactivated
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Dat, Ly Vinh, and Yaojung Shiao. "PROPOSING A VALVE TRAIN SYSTEM FOR CYLINDER DEACTIVATION IN SI ENGINES." Transactions of the Canadian Society for Mechanical Engineering 41, no. 4 (2017): 543–53. http://dx.doi.org/10.1139/tcsme-2017-1038.

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Cylinder deactivation method can provide many advantages in improving emissions and fuel consumption at various load ranges in spark ignition (SI) engines. The study proposes a design valve train that can control the deactivation of cylinder in an inline SI engine with four cylinders. The proposed design, which is an improvement on the conventional valve train in the engine, can deactivate one- or two-cylinder mode depending on part or medium load in a vehicle. The results show that cylinder deactivation can reduce about 13–15% of fuel consumption compared with the conventional engine. The con
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Gosala, Dheeraj B., Cody M. Allen, Gregory M. Shaver, et al. "Dynamic cylinder activation in diesel engines." International Journal of Engine Research 20, no. 8-9 (2018): 849–61. http://dx.doi.org/10.1177/1468087418779937.

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Cylinder deactivation has been recently demonstrated to have fuel savings and aftertreatment thermal management benefits at low to moderate loads compared to conventional operation in diesel engines. This study discusses dynamic cylinder activation as an effective variant to fixed diesel engine cylinder deactivation. The set of inactive and active cylinders varies on a cycle-by-cycle basis during dynamic cylinder activation. This enables greater control over forcing frequencies of the engine, thereby allowing the engine to operate away from the drivetrain resonant frequency at all engine speed
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Liu, Ying, Alexandr Kuznetsov, and Bowen Sa. "Simulation and Analysis of the Impact of Cylinder Deactivation on Fuel Saving and Emissions of a Medium-Speed High-Power Diesel Engine." Applied Sciences 11, no. 16 (2021): 7603. http://dx.doi.org/10.3390/app11167603.

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The potential benefit of cylinder deactivation (CDA) on power and emission performances has been numerically investigated on a locomotive 16-cylinder diesel engine. A 1D model combined with a predictive friction model and a 3D combustion model based and validated on experimental data have been developed to simulate engine working processes by deactivating half of the cylinders by cutting off the fuel supply and maintaining/cutting off valve motions. The results demonstrate that CDA with the valves closed decreases the BSFC by 11% at 450 rpm and by 14% at 556 rpm with a load of 1000 N∙m, due to
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Zsiga, Norbert, Johannes Ritzmann, and Patrik Soltic. "Practical Aspects of Cylinder Deactivation and Reactivation." Energies 14, no. 9 (2021): 2540. http://dx.doi.org/10.3390/en14092540.

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Cylinder deactivation is an effective measure to reduce the fuel consumption of internal combustion engines. This paper deals with several practical aspects of switching from conventional operation to operation with deactivated cylinders, i.e., gas spring operation with closed intake and exhaust valves. The focus of this paper lies on one particular quantity-controlled stoichiometrically-operated engine where the load is controlled using the valve timing. Nevertheless, the main results are transferable to other engines and engine types, including quality-controlled engines. The first aspect of
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Buitkamp, Thomas, Michael Günthner, Florian Müller, and Tim Beutler. "A detailed study of a cylinder activation concept by efficiency loss analysis and 1D simulation." Automotive and Engine Technology 5, no. 3-4 (2020): 159–72. http://dx.doi.org/10.1007/s41104-020-00070-1.

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Abstract Cylinder deactivation is a well-known measure for reducing fuel consumption, especially when applied to gasoline engines. Mostly, such systems are designed to deactivate half of the number of cylinders of the engine. In this study, a new concept is investigated for deactivating only one out of four cylinders of a commercial vehicle diesel engine (“3/4-cylinder concept”). For this purpose, cylinders 2–4 of the engine are operated in “real” 3-cylinder mode, thus with the firing order and ignition distance of a regular 3-cylinder engine, while the first cylinder is only activated near fu
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DRAGHICU, Marcel Alexandru, Victor IORGA SIMAN, Adrian CLENCI, Rodica NICULESCU, and Florian IVAN. "Overview on the Cylinder Deactivationtechniques." University of Pitesti. Scientific Bulletin - Automotive Series 31 (February 1, 2021): 1–10. http://dx.doi.org/10.26825/bup.ar.2021.005.

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"Temporary downsizing" in the form of deactivation of the cylinders is used as an attractive compromise, as it allows to improvefuel consumptionandat the same time it allows sufficient power reserve to meet the requirements of the driver, maintaining driving pleasure as well as comfort regarding noise and vibration levels.The paper aims topresent an overview on the cylinder deactivation techniques focusing on the stakes and challenges related with their implementation.
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Muhamad Said, Mohd Farid, Zulkarnain Abdul Latiff, Shaiful Fadzil Zainal Abidin, and Izzarief Zahari. "Investigation of Intake Valve Strategy on the Cylinder Deactivation Engine." Applied Mechanics and Materials 819 (January 2016): 459–65. http://dx.doi.org/10.4028/www.scientific.net/amm.819.459.

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There are many technologies that being developed to increase the efficiency of internal combustion engines as well as reducing their fuel consumption. In this paper, the main research area is focus on cylinder deactivation (CDA) technology. CDA mostly being applied on multi cylinders engines. CDA has the advantage in improving fuel consumption by reducing pumping losses at part load engine conditions. Here, the application of CDA on 1.6L four cylinders gasoline engine was studied. One-dimensional (1D) engine modeling is performed to investigate the effect of intake valve strategy on engine per
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Dissertations / Theses on the topic "Deactivation of cylinders"

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Carbajo, Alix. "Analysis of vibro-acoustic comfort for engine with deactivated cylinders." Thesis, Lyon, 2018. http://www.theses.fr/2018LYSEI101.

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Afin de réduire les consommations de carburant et les émissions de CO2, des technologies comme la désactivation de cylindres ont été développées. Deux stratégies ont été à l’étude chez le Groupe PSA, il s’agit de désactivations appelées fixe ou tournante en fonction du nombre de cylindres désactivés au cours d’un cycle moteur. Des modifications importantes du bruit et des vibrations transmises dans l’habitacle de la voiture en sont les conséquences ce qui modifie nettement la perception du confort par le conducteur de la voiture. Ce travail de recherche s’intéresse aux modifications de confort
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Weidner, Lukáš. "Čtyřválcový vznětový motor s vypínáním válců." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2017. http://www.nusl.cz/ntk/nusl-318782.

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The aim of this thesis is design crankshaft for four-cylinder diesel engine with cylinder deactivation. Further, to perform stress analysis of designed crankshaft with considering torsional vibration.
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Bech, Alexander. "Thermal analysis and fuel economy benefits of cylinder deactivation on a 1.0l spark ignition engine." Thesis, University of Nottingham, 2018. http://eprints.nottingham.ac.uk/49777/.

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The deactivation of a cylinder on a 1.0litre three cylinder turbocharged gasoline engine has been investigated providing novel information on thermal and fuel consumption effects associated with the technology. This comes in light of providing solutions to reduce fuel consumption and CO2 emissions resulting from internal combustion engines. The investigation has been carried out through the PROgram for Modelling of Engine Thermal Systems (PROMETS). A version of PROMETS was extensively developed to characterise a commercially produced TCE not fitted with cylinder deactivation technology. Develo
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Fridrichová, Kateřina. "Vypínání válců zážehového motoru." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2020. http://www.nusl.cz/ntk/nusl-417418.

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This thesis focuses on a technology called cylinder deactivation. The technology helps reducing emissions and fuel consumption. The first part summarizes the possibilities of application of the cylinder deactivation technology as well as advantages resulting from combination with other technologies. The thesis also consists of two design options for valvetrain in inline four-cylinder engine and the results of simulations of dynamics of its cranktrain.
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Novosád, Ivan. "Šestiválcový řadový vznětový motor s vypínáním válců." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2020. http://www.nusl.cz/ntk/nusl-417519.

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Master 's thesis deals with design of a drivetrain of six cylinder inline engine with cylinder deactivation for heavy agricultural vehicles. In this thesis were devised various possibilities of crankshaft balancing, the best design solution of counterweight was based on optimization in software Catia. Further, the crankshaft was analysed for force and momentum loading and torsional vibration, based on which, the torsional vibration damper was designed. There were considered several options for cylinder deactivation, which were analysed for finest run of engine and the best thermal distribution
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Steigl, Vladimír. "Čtyřválcový zážehový motor s vypínáním válců." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2017. http://www.nusl.cz/ntk/nusl-318839.

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The aim of this diploma thesis is design of configuration and balancing of crankshaft which is determined for four-cylinder gasoline engine. The thesis investigates kinematics, dynamics and possible ways of balancing the inertial forces and moments of the rotating and sliding parts of the central crank mechanism. Subsequently, the 3D CAD model is designed according to the presented drawing. It is transformed into a spare torsion system, from which the calculations of its own and forced torsional vibrations are based. The proposed 3D CAD model is then spatially transmitted in the FEA software A
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(6594053), Cody M. Allen. "Advancing Diesel Engines via Cylinder Deactivation." Thesis, 2019.

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The transportation sector continues to be a primary source of greenhouse gas (GHG) emissions, contributing more than any other sector in the United States in 2017. Medium-duty and heavy-duty trucks trail only passenger cars as the largest GHG contributor in this sector [1]. The intense operating requirements of these vehicles create a reliance on the diesel engine that is projected to last for many decades. Therefore, it is vital that the efficiency and environmental sustainability of diesel engines continue to be advanced.<br><br>Cylinder deactivation (CDA) is a promising technology to improv
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(11208897), Shubham Pradeep Agnihotri. "EFFICIENCY IMPROVEMENT ANALYSIS FOR COMMERCIAL VEHICLES BY (I) POWERTRAIN HYBRIDIZATION AND (II) CYLINDER DEACTIVATION FOR NATURAL GAS ENGINES." Thesis, 2021.

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<div>The commercial vehicle sector is an important enabler of the economy and is heavily dependent on fossil fuels. In the fight against climate change, reduction of emissions by improving fuel economy is a key step for the commercial vehicle sector. Improving fuel economy deals with reducing energy losses from fuel to the wheels. This study aims to analyze efficiency improvements for two systems that are important in reducing CO2 emissions - hybrid powertrains and natural gas engines. At first, a prototype series hybrid powertrain was analyzed based on on-highway data collected from its power
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(8231772), Mrunal C. Joshi. "Opportunities to Improve Aftertreatment Thermal Management and Simplify the Air Handling Architectures of Highly Efficient Diesel Engines Incorporating Valvetrain Flexibility." Thesis, 2020.

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In an effort to reduce harmful pollutants emitted by medium and heavy duty diesel engines, stringent emission regulations have been imposed by the Environmental Protection Agency (EPA) and the California Air Resources Board (CARB). Effective aftertreatment thermal management is critical for controlling tail pipe outlevels of NOx and soot, while improved fuel efficiency is also necessary to meet greenhouse gas emissions standards and customer expectations. Engine manufacturers have developed and implemented several engine and non-engine based techniques for emissi
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Books on the topic "Deactivation of cylinders"

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Smalley, Anthony J., Shannon Vinyard, and B. Fred Evans. Deactivating Power Cylinders Under Reduced Load on Two-Cycle Engines: Project Pr15-525. Amer Gas Assn, 1989.

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Book chapters on the topic "Deactivation of cylinders"

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Shidore, Neeraj, and Madhusudan Raghavan. "Cylinder Deactivation and Propulsion Electrification." In Proceedings of the 2020 USCToMM Symposium on Mechanical Systems and Robotics. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-43929-3_4.

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Cecur, Majo, and Lubos Tomiska. "Cylinder deactivation for CO2 reduction of 3-cylinder gasoline engines." In Proceedings. Springer Fachmedien Wiesbaden, 2014. http://dx.doi.org/10.1007/978-3-658-05016-0_14.

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Zhang, Mingdong, Jinqiang Ma, Hang Su, et al. "The Research of Cylinder Deactivation Technology on Gasoline Engine." In Lecture Notes in Electrical Engineering. Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-10-8506-2_7.

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Zhou, Peng, Jianrui Zhang, Zhengxing Zhang, Baoyu Hao, and Yun Lu. "Diesel Engine Cylinder Deactivation Experimental Research on Asymmetric Exhaust System." In Lecture Notes in Electrical Engineering. Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-9718-9_34.

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McCarthy, James. "Cylinder deactivation improves Diesel aftertreatment and fuel economy for commercial vehicles." In 17. Internationales Stuttgarter Symposium. Springer Fachmedien Wiesbaden, 2017. http://dx.doi.org/10.1007/978-3-658-16988-6_78.

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Yu, Shuhai, Xingxing Ma, Zhigang Ma, Rui Liu, and Dongxian Song. "Experimental and Simulated Study on the Cylinder Deactivation of Vehicle Gasoline Engine." In Lecture Notes in Electrical Engineering. Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-3527-2_19.

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Boretti, Alberto, and Joseph Scalzo. "A Novel Mechanism for Piston Deactivation Improving the Part Load Performances of Multi Cylinder Engines." In Lecture Notes in Electrical Engineering. Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-33841-0_1.

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Deppenkemper, Kai, Markus Schönen, Bernd Lindemann, Mauro Scassa, Matthew Younkins, and Robert Wang. "Extended cylinder deactivation strategies to improve CO2 and pollutant emissions for light-duty diesel engine applications." In Proceedings. Springer Fachmedien Wiesbaden, 2019. http://dx.doi.org/10.1007/978-3-658-25939-6_52.

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Theobalt, M., H. Mahe, and C. Lopez Perez. "3 cylinders and cylinder deactivation: which dampening challenges?" In Drivetrain for Vehicles 2017. VDI Verlag, 2017. http://dx.doi.org/10.51202/9783181023136-83.

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"Cylinder Deactivation." In Solving the Powertrain Puzzle. Springer Fachmedien Wiesbaden, 2014. http://dx.doi.org/10.1007/978-3-658-06430-3_11.

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Conference papers on the topic "Deactivation of cylinders"

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Perram, Glen P., Deborah A. Determan, John A. Dorian, Barrett F. Lowe, and Tim L. Thompson. "Radial diffusion between coaxial cylinders and surface deactivation of O 2 (b1E g+)." In OE/LASE'93: Optics, Electro-Optics, & Laser Applications in Science& Engineering, edited by William E. McDermott. SPIE, 1993. http://dx.doi.org/10.1117/12.145213.

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Baumgardner, Marc E., and Daniel B. Olsen. "Poison Build-up and Performance Degradation of an Oxidation Catalyst in 2-Stroke Natural Gas Engine Exhaust." In ASME 2017 Internal Combustion Engine Division Fall Technical Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/icef2017-3550.

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Due to current and future exhaust emissions regulations, oxidation catalysts are increasingly being added to the exhaust streams of large-bore, 2-stroke, natural gas engines. Such catalysts have been found to have a limited operational lifetime, primarily due to chemical (i.e. catalyst poisoning) and mechanical fouling resulting from the carry-over of lubrication oil from the cylinders. It is critical for users and catalyst developers to understand the nature and rate of catalyst deactivation under these circumstances. This study examines the degradation of an exhaust oxidation catalyst on a l
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Vinodh, B. "Technology for Cylinder Deactivation." In SAE 2005 World Congress & Exhibition. SAE International, 2005. http://dx.doi.org/10.4271/2005-01-0077.

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Lahti, John L., Matthew W. Snyder, and John J. Moskwa. "A Transient Single Cylinder Test System for Engine Research and Control Development." In ASME 2005 International Mechanical Engineering Congress and Exposition. ASMEDC, 2005. http://dx.doi.org/10.1115/imece2005-81323.

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A transient test system was developed for a single cylinder research engine that greatly improves test accuracy by allowing the single cylinder to operate as though it were part of a multi-cylinder engine. The system contains two unique test components: a high bandwidth transient hydrostatic dynamometer, and an intake airflow simulator. The high bandwidth dynamometer is used to produce a speed trajectory for the single cylinder engine that is equivalent to that produced by a multi-cylinder engine. The dynamometer has high torque capacity and low inertia allowing it to simulate the speed ripple
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Strange, Dakota B., and Pingen Chen. "A Cylinder Deactivation Control Framework for Gasoline Engines without Valve Deactivation." In 2020 American Control Conference (ACC). IEEE, 2020. http://dx.doi.org/10.23919/acc45564.2020.9147316.

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Bemman, Ya-Juan, Tom Frei, Chris Jones, and Mathias Keck. "Passive Exhaust System With Cylinder Deactivation." In SAE 2005 Noise and Vibration Conference and Exhibition. SAE International, 2005. http://dx.doi.org/10.4271/2005-01-2351.

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Grover, Ronald O., Junseok Chang, Edward R. Masters, Paul Najt, and Aditya Singh. "The Effect of Intake Valve Deactivation on Lean Stratified Charge Combustion at an Idling Condition of a Spark-Ignition Direct-Injection (SIDI) Engine." In ASME 2011 Internal Combustion Engine Division Fall Technical Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/icef2011-60171.

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A combined experimental and analytical study was carried out to understand the improvement in combustion performance of a 4-valve SIDI wall-guided engine operating at lean, stratified idle with enhanced in-cylinder charge motion by deactivating one of the two intake valves. A fully warmed-up engine was operated at low speed, light load by injecting the fuel from a pressure-swirl injector during the compression stroke to produce a stratified fuel cloud surrounding the spark plug at the time of ignition. Steady state flow-bench measurements and CFD calculations showed that valve deactivation pri
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Rebbert, Martin, Gerhard Kreusen, and Sven Lauer. "A New Cylinder Deactivation by FEV and Mahle." In SAE World Congress & Exhibition. SAE International, 2008. http://dx.doi.org/10.4271/2008-01-1354.

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Ying, Liu, and A. G. Kuznetsov. "The Effect of Cylinder Deactivation on Engine Performance." In 2020 International Multi-Conference on Industrial Engineering and Modern Technologies (FarEastCon). IEEE, 2020. http://dx.doi.org/10.1109/fareastcon50210.2020.9271303.

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Ma, Zheng. "Oil Transport Analysis of a Cylinder Deactivation Engine." In SAE 2010 World Congress & Exhibition. SAE International, 2010. http://dx.doi.org/10.4271/2010-01-1098.

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