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Relevant bibliographies by topics / Exhaust gas recirculation

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Academic literature on the topic 'Exhaust gas recirculation'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 April 2022

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Journal articles on the topic "Exhaust gas recirculation"

1

Eitel, Jochen, Wolfgang Kramer, and Rainer Lutz. "Exhaust gas recirculation." ATZ worldwide 105, no. 9 (September 2003): 25–26. http://dx.doi.org/10.1007/bf03224626.

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Lapuerta, Magín, Ángel Ramos, David Fernández-Rodríguez, and Inmaculada González-García. "High-pressure versus low-pressure exhaust gas recirculation in a Euro 6 diesel engine with lean-NOx trap: Effectiveness to reduce NOx emissions." International Journal of Engine Research 20, no. 1 (December 16, 2018): 155–63. http://dx.doi.org/10.1177/1468087418817447.

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Exhaust gas recirculation can be achieved by means of two different routes: the high-pressure route (high-pressure exhaust gas recirculation), where exhaust gas is conducted from upstream of the turbine to downstream of the compressor, and the low-pressure one (low-pressure exhaust gas recirculation), where exhaust gas is recirculated from downstream of the turbine and of the aftertreatment system to upstream of the compressor. In this study, the effectiveness of both exhaust gas recirculation systems on the improvement of the NOx-particulate matter emission trade-off has been compared on a Euro 6 turbocharged diesel engine equipped with a diesel oxidation catalyst, a lean-NOx trap, and a diesel particulate filter. Emissions were measured both upstream and downstream of the aftertreatment system, at different combinations of engine speed and torque (corresponding to different vehicle speeds), at transient and steady conditions, and at different coolant temperatures as switch points to change from high-pressure exhaust gas recirculation to low-pressure exhaust gas recirculation. It was shown that low-pressure exhaust gas recirculation was more efficient than high-pressure exhaust gas recirculation to reduce NOx emissions, mainly due to the higher recirculation potential and the lower temperature of the recirculated gas. However, such a differential benefit decreased as the coolant temperature decreased, which suggests the use of high-pressure exhaust gas recirculation during the engine warm-up. It was also shown that the lean-NOx trap storage efficiency decreased more rapidly at high engine load than at medium load and that such reduction in efficiency was much faster when high-pressure exhaust gas recirculation was used than when low-pressure exhaust gas recirculation was used.

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Dimitriou, Pavlos, James Turner, Richard Burke, and Colin Copeland. "The benefits of a mid-route exhaust gas recirculation system for two-stage boosted engines." International Journal of Engine Research 19, no. 5 (August 10, 2017): 553–69. http://dx.doi.org/10.1177/1468087417723782.

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Exhaust gas recirculation is a widely known technique applied in internal combustion engines for controlling the combustion process and harmful emissions. The recirculation of gases can be achieved either by delivering burnt gases from upstream of the turbine to downstream of the compressor (short-route) or by taking the exhaust gas from downstream of the turbine and deliver to upstream of the compressor (long-route). Although long-route system is preferred for highly boosted engines due to the higher exhaust gas recirculation availability at low engine speeds, it lacks a fast response time during transient performance compared to the short-route system. This article examines the potentials of introducing an alternative exhaust gas recirculation route which can be applied in two-stage boosted engines. The proposed mid-route exhaust gas recirculation system, applied in a gasoline engine, combines the benefits of the long routes and short routes. The system provides high exhaust gas recirculation rates at all engine speeds while the transport delay in the case of transient operation is relatively short. The potential of a hybrid exhaust gas recirculation system combining mid-route and long-route exhaust gas recirculation is examined and various components’ (i.e. compressor, turbine and coolers) sizing and transient performance studies are performed to understand the trade-offs of the system. It was demonstrated that mid-route could provide high exhaust gas recirculation particularly at high- and low engine speeds. A combination of mid-route and long-route exhaust gas recirculation can provide maximum exhaust gas recirculation rates at all speeds with a maximum fuel consumption penalty of 1.4% at engine speeds below 2500 r/min. The reduction in exhaust gas recirculation response time was of the magnitude of 50%, while the faster exhaust gas recirculation purging time combined with the smaller turbine implemented dropped the load tip-in response time by 25%. The coolers’ sizing study revealed that a long-route exhaust gas recirculation cooler is unnecessary, whereas the mid-route exhaust gas recirculation cooler can also be omitted when the flow is delivered prior an intercooler with a 25% larger cooling capacity than of the baseline engine.

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Papaioannou, Nick, Felix CP Leach, Martin H. Davy, Adam Weall, and Brian Cooper. "Evaluation of exhaust gas recirculation techniques on a high-speed direct injection diesel engine using first law analysis." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 233, no. 3 (January 23, 2018): 710–26. http://dx.doi.org/10.1177/0954407017749110.

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The effects of different exhaust gas recirculation (EGR) strategies on engine efficiency and the resulting energy flows at two speed/load conditions (1500 r/min/6.8 bar net indicated mean effective pressure (nIMEP) and 1750 r/min/13.5 bar nIMEP) were studied using a first law analysis approach. The EGR strategies tested were as follows: cooled high-pressure exhaust gas recirculation (baseline), the application of exhaust gas recirculation with the swirl flap closed and the use of exhaust gas recirculation under constant λ conditions. The closed swirl flap exhaust gas recirculation strategy reduced brake efficiency under high load conditions and increased heat transfer to the coolant for both load cases. Soot and CO emissions increased at high load, however, with an increase in NOx relative to the baseline case. The constant λ exhaust gas recirculation strategy reduced brake efficiency under low load, as well as the heat flow to the coolant for both load cases. The constant λ exhaust gas recirculation strategy benefited smoke emissions and increased combustion exhaust gas recirculation tolerance, albeit with a penalty in NOx emission.

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Lopatin, O. P. "Gas-diesel engine exhaust gas recirculation." IOP Conference Series: Earth and Environmental Science 548 (September 2, 2020): 062023. http://dx.doi.org/10.1088/1755-1315/548/6/062023.

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6

Kim, Jaeheun, and Choongsik Bae. "Emission reduction through internal and low-pressure loop exhaust gas recirculation configuration with negative valve overlap and late intake valve closing strategy in a compression ignition engine." International Journal of Engine Research 18, no. 10 (February 1, 2017): 973–90. http://dx.doi.org/10.1177/1468087417692680.

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An investigation was carried out to examine the feasibility of replacing the conventional high-pressure loop/low-pressure loop exhaust gas recirculation with a combination of internal and low-pressure loop exhaust gas recirculation. The main objective of this alternative exhaust gas recirculation path configuration is to extend the limits of the late intake valve closing strategy, without the concern of backpressure caused by the high-pressure loop exhaust gas recirculation. The late intake valve closing strategy improved the conventional trade-off relation between nitrogen oxides and smoke emissions. The gross indicated mean effective pressure was maintained at a similar level, as long as the intake boosting pressure kept changing with respect to the intake valve closing timing. Applying the high-pressure loop exhaust gas recirculation in the boosted conditions yielded concern of the exhaust backpressure increase. The presence of high-pressure loop exhaust gas recirculation limited further intake valve closing retardation when the negative effect of increased pumping work cancelled out the positive effect of improving the emissions’ trade-off. Replacing high-pressure loop exhaust gas recirculation with internal exhaust gas recirculation reduced the burden of such exhaust backpressure and the pumping loss. However, a simple feasibility analysis indicated that a high-efficiency turbocharger was required to make the pumping work close to zero. The internal exhaust gas recirculation strategy was able to control the nitrogen oxides emissions at a low level with much lower O2 concentration, even though the initial in-cylinder temperature was high due to hot residual gas. Retardation of intake valve closing timing and intake boosting contributed to increasing the charge density; therefore, the smoke emission reduced due to the higher air–fuel ratio value exceeding 25. The combination of internal and low pressure loop loop exhaust gas recirculation with late intake valve closing strategy exhibited an improvement on the trade-off relation between nitrogen oxides and smoke emissions, while maintaining the gross indicated mean effective pressure at a comparable level with that of the high-pressure loop exhaust gas recirculation configuration.

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Marsh, David K., and Alexander K. Voice. "Quantification of knock benefits from reformate and cooled exhaust gas recirculation using a Livengood–Wu approach with detailed chemical kinetics." International Journal of Engine Research 18, no. 7 (September 5, 2016): 717–31. http://dx.doi.org/10.1177/1468087416666728.

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In this work, a simple methodology was implemented to predict the onset of knock in spark-ignition engines and quantify the benefits of two practical knock mitigation strategies: cooled exhaust gas recirculation and syngas blending. Based on the results of this study, both cooled exhaust gas recirculation and the presence of syngas constituents in the end-gas substantially improved the knock-limited compression ratio of the engine. At constant load, 25% exhaust gas recirculation increased the knock-limited compression ratio from 9.0 to 10.8:1 (0.07 compression ratio per 1% exhaust gas recirculation) due to lower end-gas temperature and reactant (fuel and oxygen) concentrations. At exhaust gas recirculation rates above 43%, higher intake temperature outweighed the benefits of lower end-gas reactant concentration. At constant intake temperature, cooled exhaust gas recirculation was significantly more effective at all exhaust gas recirculation rates (0.10 compression ratio per 1% exhaust gas recirculation), and no diminishing returns or optimum was observed. Both hydrogen and carbon monoxide were also predicted to improve knock by reducing end-gas reactivity, likely through the conversion of high-reactivity hydroxy-radicals to less reactive peroxy-radicals. Hydrogen increased the knock-limited compression ratio by 1.1 per volume percent added at constant energy content. Carbon monoxide was less effective, increasing the knock-limited compression ratio by 0.38 per volume percent added. Combining 25% cooled exhaust gas recirculation with reformate produced from rich combustion at an equivalence ratio of 1.3 resulted in a predicted increase in the knock-limited compression ratio of 3.5, which agreed well with the published experimental engine data. The results show the extent to which syngas blending and cooled exhaust gas recirculation each contribute separately to knock mitigation and demonstrate that both can be effective knock mitigation strategies. Together, these solutions have the potential to increase the compression ratio and efficiency of spark-ignition engines.

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Song, Kang, Devesh Upadhyay, and Hui Xie. "An assessment of the impacts of low-pressure exhaust gas recirculation on the air path of a diesel engine equipped with electrically assisted turbochargers." International Journal of Engine Research 22, no. 1 (June 6, 2019): 3–21. http://dx.doi.org/10.1177/1468087419854294.

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The impact of assisted boosting technologies on the ability to maintain desired exhaust gas recirculation is investigated. Regenerative electrically assisted turbocharging is a promising technique for significantly reducing turbo lag. In addition to mitigating turbo lag, assisted boosting systems also allow fuel economy benefits through reduced pumping losses. Pumping loss reduction is achieved through optimally managing the exhaust pressure via vane position (for a variable geometry turbocharger) or waste gate position (for a waste-gated fixed geometry turbocharger). The consequent loss in exhaust turbine power, from reduced exhaust pressure, is supplemented by electrical assist power. Reduced exhaust pressure and a rapid increase in intake pressure results in a pressure differential across the high-pressure exhaust gas recirculation valve that may not support exhaust gas recirculation flow demands. Hence, a natural trade-off exists between the reduction of pumping loss and the ability to meet exhaust gas recirculation demand, as dictated by prescribed constraints on engine-out emissions. Low-pressure exhaust gas recirculation offers a potential solution that may allow the desired fuel economy improvements without sacrificing the desired exhaust gas recirculation fractions in the intake charge. In this article, we consider this problem and investigate the potential benefits of using low-pressure exhaust gas recirculation for assisted boosted systems.

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9

Shen, Xianqing, Kai Shen, and Zhendong Zhang. "Experimental study on the effect of high-pressure and low-pressure exhaust gas recirculation on gasoline engine and turbocharger." Advances in Mechanical Engineering 10, no. 11 (November 2018): 168781401880960. http://dx.doi.org/10.1177/1687814018809607.

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The effects of high-pressure and low-pressure exhaust gas recirculation on engine and turbocharger performance were investigated in a turbocharged gasoline direct injection engine. Some performances, such as engine combustion, fuel consumption, intake and exhaust, and turbocharger operating conditions, were compared at wide open throttle and partial load with the high-pressure and low-pressure exhaust gas recirculation systems. The reasons for these changes are analyzed. The results showed EGR system of gasoline engine could optimize the cylinder combustion, reduce pumping mean effective pressure and lower fuel consumption. Low-pressure exhaust gas recirculation system has higher thermal efficiency than high-pressure exhaust gas recirculation, especially on partial load condition. The main reasons are as follows: more exhaust energy is used by the turbocharger with low-pressure exhaust gas recirculation system, and the lower exhaust gas temperature of engine would optimize the combustion in cylinder.

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André, Mathieu, Bruno Walter, Gilles Bruneaux, Fabrice Foucher, and Christine Mounaïm–Rousselle. "Exhaust gas recirculation stratification to control diesel homogeneous charge compression ignition combustion." International Journal of Engine Research 13, no. 5 (March 27, 2012): 429–47. http://dx.doi.org/10.1177/1468087412438338.

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A single-cylinder diesel engine was used to investigate the potential of exhaust gas recirculation dilution stratification as a control technique for homogeneous charge compression ignition combustion with early direct injections. Experimental studies on both all-metal and optically accessible engines were performed to understand the processes involved when exhaust gas recirculation is introduced separately in the intake ports. Laser-induced fluorescence diagnostics were carried out in the optical engine in order to provide fuel and exhaust gas recirculation distributions. The results indicate that depending on the intake configuration, the exhaust gas recirculation stratification can be maintained until late timings corresponding to the combustion event, leading to decreased maxima of heat-release rates, as well as decreased combustion noise levels. This result suggests that exhaust gas recirculation stratification may be used as a control parameter for combustion speed and therefore may contribute to the extension of the homogeneous charge compression ignition operating range. However, although exhaust gas recirculation stratification appears to be an interesting new control technique for homogeneous charge compression ignition combustion, its effect on the combustion was shown to be very sensitive to parameters such as the intake system configuration or the exhaust gas recirculation composition, showing that industrial use of this control technique requires further understanding of the physical phenomena involved.

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Dissertations / Theses on the topic "Exhaust gas recirculation"

1

Cho, Sung Taek. "Spray development and combustion in direct injection diesel engines." Thesis, Imperial College London, 1999. http://hdl.handle.net/10044/1/8638.

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Roy, Vincent. "Effect of exhaust gas recirculation on fuel consumption and nitrogen oxides emissions." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/MQ63554.pdf.

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Simoson, Christopher J. "Emission reduction in small displacement diesel engines using cooled exhaust gas recirculation." Connect to this title online, 2006. http://etd.lib.clemson.edu/documents/1175185555/.

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Hayakawa, Yoshikazu, and Tomohiko Jimbo. "Model Predictive Control for Automotive Engine Torque Considering Internal Exhaust Gas Recirculation." International Federation of Automatic Control (IFAC), 2011. http://hdl.handle.net/2237/20769.

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McKenzie, Jacob Elijah. "The autoignition characteristics of turbocharged spark ignition engines with exhaust gas recirculation." Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/100139.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2015.
Cataloged from PDF version of thesis. Page 145 blank.
Includes bibliographical references (pages 131-134).
The societal demand for vehicles with high efficiency and low emissions has spurred considerable changes to the automotive internal combustion engine within the past decade. Reductions in the displacement volume and increases in maximum output per unit of displacement are among the characteristics adopted to meet the fuel economy targets of world governments. However, the extent to which these changes in engine configuration may be pursued in search of efficiency is limited by several fundamental phenomena. The intent of this research project is to investigate the modeling of one of these phenomena - the autoignition of an unburned portion of the air-fuel mixture - and a potential strategy intended to delay the occurrence of this frequently damaging type of combustion reaction. The autoignition abatement approach studied entails the recirculation of burned exhaust gasses which serve to dilute the air-fuel mixture and reduce maximum unburned gas temperatures Experimental testing was performed on two different types of exhaust gas recirculation (EGR) system - one which extracts exhaust gases from upstream of the catalytic converter and another which extracts gases from downstream - in order to determine if the changes in composition that occur across the catalyst affect the autoignition abatement characteristics of the recirculated exhaust. This testing indicated that differences between the alternative installations are dominated by changes in the flow dynamics of the exhaust system, with no definite changes attributable to compositional differences. An empirical method of predicting the occurrence of autoignition using experimental data was then developed based on an approach originally proposed by Livengood and Wu. Ignition delay correlations were developed that provide accurate autoignition prediction over a range of speeds, loads, air-fuel equivalence ratios and dilution rates. Additionally, a new statistical model for autoignition is proposed that captures the cycle-to-cycle variation in autoignition intensity and relates these variations to the thermodynamic state of the charge.
by Jacob Elijah McKenzie.
Ph. D.

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Herraiz, Palomino Laura. "Selective exhaust gas recirculation in combined cycle gas turbine power plants with post-combustion carbon capture." Thesis, University of Edinburgh, 2017. http://hdl.handle.net/1842/23460.

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Selective Exhaust Gas Recirculation (S-EGR) consists of selectively transferring CO2 from the exhaust gas stream of a gas-fired power plant into the air stream entering the gas turbine compressor. Unlike in “non-selective” Exhaust Gas Recirculation (EGR) technology, recirculation of, principally, nitrogen does not occur, and the gas turbine still operates with a large excess of air. Two configurations are proposed: one with the CO2 transfer system operating in parallel to the post-combustion carbon capture (PCC) unit; the other with the CO2 transfer system operating downstream of, and in series to, the PCC unit. S-EGR allows for higher CO2 concentrations in the flue gas of approximately 13-14 vol%, compared to 6.6 vol% with EGR at 35% recirculation ratio. The oxygen levels in the combustor are approximately 19 vol%, well above the minimum limit of 16 vol% with 35% EGR reported in literature. At these operating conditions, process model simulations show that the current class of gas turbine engines can operate without a significant deviation in the compressor and the turbine performance from the design conditions. Compressor inlet temperature and CO2 concentration in the working fluid are critical parameters in the assessment of the effect on the gas turbine net power output and efficiency. A higher turbine exhaust temperature allows the generation of additional steam which results in a marginal increase in the combined cycle net power output of 5% and 2% in the investigated configurations with S-EGR in parallel and S-EGR in series, respectively. With aqueous monoethanolamine scrubbing technology, S-EGR leads to operation and cost benefits. S-EGR in parallel operating at 70% recirculation, 97% selective CO2 transfer efficiency and 96% PCC efficiency results in a reduction of 46% in packing volume and 5% in specific reboiler duty, compared to air-based combustion CCGT with PCC, and of 10% in packing volume and 2% in specific reboiler duty, compared to 35% EGR. S-EGR in series operating at 95% selective CO2 transfer efficiency and 32% PCC efficiency results in a reduction of 64% in packing volume and 7% in specific reboiler duty, compared to air-based, and of 40% in packing volume and 4% in specific reboiler duty, compared to 35% EGR. An analysis of key performance indicators for selective CO2 transfer proposes physical adsorption in rotary wheel systems as an alternative to selective CO2 membrane systems. A conceptual design assessment with two commercially available adsorbent materials, activated carbon and Zeolite X13, shows that it is possible to regenerate the adsorbent with air at near ambient temperature and pressure. Yet, a significant step change in adsorbent materials is necessary to design rotary adsorption systems with dimensions comparable to the largest rotary gas/gas heat exchanger used in coal-fired power plants, i.e. approximately 24 m diameter and 2 m height. An optimisation study provides guidelines on the equilibrium parameters for the development of materials. Finally, a technical feasibility study of configuration options with rotary gas/gas heat exchangers shows that cooling water demand around the post-combustion CO2 capture system can be drastically reduced using dry cooling systems where gas/gas heat exchangers use ambient air as the cooling fluid. Hybrid cooling configurations reduce cooling and process water demand in the direct contact cooler of a wet cooling system by 67% and 35% respectively, and dry cooling configurations eliminate the use of process and cooling water and achieve adequate gas temperature entering the absorber.

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Shyani, Rajeshkumar Ghanshyambhai. "Utilizing a cycle simulation to examine the use of exhaust gas recirculation (EGR) for a spark-ignition engine: including the second law of thermodynamics." Texas A&M University, 2008. http://hdl.handle.net/1969.1/86044.

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The exhaust gas recirculation (EGR) system has been widely used to reduce nitrogen oxide (NOx) emission, improve fuel economy and suppress knock by using the characteristics of charge dilution. However, previous studies have shown that as the EGR rate at a given engine operating condition increases, the combustion instability increases. The combustion instability increases cyclic variations resulting in the deterioration of engine performance and increasing hydrocarbon emissions. Therefore, the optimum EGR rate should be carefully determined in order to obtain the better engine performance and emissions. A thermodynamic cycle simulation of the four-stroke spark-ignition engine was used to determine the effects of EGR on engine performance, emission characteristics and second law parameters, considering combustion instability issues as EGR level increases. A parameter, called 'Fuel Fraction Burned,' was introduced as a function of the EGR percentage and used in the simulation to incorporate the combustion instability effects. A comprehensive parametric investigation was conducted to examine the effects of variations in EGR, load and speed for a 5.7 liter spark-ignition automotive engine. Variations in the thermal efficiencies, brake specific NOx emissions, average combustion temperature, mean exhaust temperature, maximum temperature and relative heat transfer as functions of exhaust gas recycle were determined for both cooled and adiabatic EGR configurations. Also effects of variations in the load and speed on thermal efficiencies, relative heat transfers and destruction of availability due to combustion were determined for 0% EGR and 20% EGR cases with both cooled and adiabatic configurations. For both EGR configurations, thermal efficiencies first increase, reach a maximum at about 16% EGR and then decrease as the EGR level increases. Thermal efficiencies are slightly higher for cooled EGR configuration than that for adiabatic configuration. Concentration of nitric oxide emissions decreases from about 2950 ppm to 200 ppm as EGR level increases from 0% to 20% for cooled EGR configuration. The cooled EGR configuration results in lower nitric oxide emissions relative to the adiabatic EGR configuration. Also second law parameters show the expected trends as functions of EGR. Brake thermal efficiency is higher for the 20% EGR case than that for the no EGR case over the range of load (0 to WOT) and speed (600 rpm to 6000 rpm). Predictions made from the simulation were compared with some of the available experimental results. Predicted thermal efficiencies showed a similar trend when compared to the available experimental data. Also, percentage of unused fuel availability increases as the EGR level increases, and it can be seen as one of the effects of deteriorating combustion quality as the EGR level increases.

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Wijetunge, Roshan. "Transient optimisation of a diesel engine." Thesis, University of Bath, 2001. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.341697.

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Haber, Benjamin. "A Robust Control Approach on Diesel Engines with Dual-Loop Exhaust Gas Recirculation Systems." The Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1274191066.

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Bowen, Caroline Elizabeth. "An experimental investigation into the use of exhaust gas recirculation for diesel engine NOx control." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape17/PQDD_0022/NQ31016.pdf.

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Books on the topic "Exhaust gas recirculation"

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Dennis, Allister James. The effect of exhaust gas recirculation on diesel engine wear. 1999.

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Georgakis, Kyriakos S. Study of dilution and recirculation of gases exhausted near buildings, using a tracer gas technique. 1986.

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Book chapters on the topic "Exhaust gas recirculation"

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Sahaya Surendira Babu, P., and P. Kumar. "External Exhaust Gas Recirculation." In Energy, Environment, and Sustainability, 275–311. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-15-0970-4_7.

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Albin Rajasingham, Thivaharan. "Combined Exhaust Gas Recirculation and VTG: Control." In Nonlinear Model Predictive Control of Combustion Engines, 253–66. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-68010-7_11.

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Albin Rajasingham, Thivaharan. "Combined Exhaust Gas Recirculation and VTG: Modeling and Analysis." In Nonlinear Model Predictive Control of Combustion Engines, 239–52. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-68010-7_10.

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Makadia, Umang, Pulkit Kumar, Ajit Kumar Parwani, and Dipankar Deb. "Simulations of Exhaust Gas Recirculation and Its Impact on NOx." In Advances in Intelligent Systems and Computing, 307–16. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-1966-2_27.

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Ahlgren, Fredrik, Marcus Thern, Magnus Genrup, and Maria E. Mondejar. "Energy Integration of Organic Rankine Cycle, Exhaust Gas Recirculation and Scrubber." In Trends and Challenges in Maritime Energy Management, 157–68. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-74576-3_12.

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Ramakrishnan, V., K. Purushothaman, and S. Mohammed Ghouse. "Emission Control by Selective Exhaust Gas Recirculation Scavenging System in Two-Stroke Engine." In Lecture Notes in Mechanical Engineering, 285–94. New Delhi: Springer India, 2014. http://dx.doi.org/10.1007/978-81-322-1871-5_35.

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Ravichandra, M., P. Nagaraju, P. Moulali, and K. Nagaraju. "Effect of Exhaust Gas Recirculation and Cerium Oxide on Tire Pyrolysis Oil Blends." In Lecture Notes in Mechanical Engineering, 969–85. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-4739-3_84.

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Bhurat, Swapnil, Shyam Pandey, Venkateshwarlu Chintala, Sachin Sharma, and Ram Kunwer. "Influence of Compression Ratio and Exhaust Gas Recirculation on Light-Duty Diesel Engine." In Lecture Notes in Mechanical Engineering, 493–503. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-33-4795-3_45.

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Mohapatra, S. S., S. Choudhury, and Binayak Pattanayak. "Vegetable Oil as Fuel in Ci Engine with and Without Exhaust Gas recirculation—A Review." In Lecture Notes in Mechanical Engineering, 377–87. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-3497-0_29.

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Boopathi, S., J. Ravikumar, R. Devanathan, and S. A. Arokya Anicia. "Injection and Exhaust Gas Recirculation Strategies for Reducing Emissions of Cyclohexanol-Diesel Blends in CI Engine." In Springer Proceedings in Materials, 279–84. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-6267-9_33.

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Conference papers on the topic "Exhaust gas recirculation"

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Rapolu, Ganesh Y. "Optimization of Exhaust Gas Recirculation System." In SIAT 2011. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2011. http://dx.doi.org/10.4271/2011-26-0025.

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Banzhaf, M., and R. Lutz. "Heat Exchanger for Cooled Exhaust Gas Recirculation." In 1995 Vehicle Thermal Management Systems Conference and Exhibition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1997. http://dx.doi.org/10.4271/971822.

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Lance, Michael J., Hassina Bilheux, Jean-Christophe Bilheux, Sophie Voisin, C. Scott Sluder, and Joseph Stevenson. "Neutron Tomography of Exhaust Gas Recirculation Cooler Deposits." In SAE 2014 World Congress & Exhibition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2014. http://dx.doi.org/10.4271/2014-01-0628.

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Lin, Manqun. "Experimental Investigation of Motorcycle Exhaust Gas Recirculation System." In Small Engine Technology Conference & Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2010. http://dx.doi.org/10.4271/2010-32-0039.

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Rajaei, Nazila, Xiaoye Han, Xiang Chen, and Ming Zheng. "Model Predictive Control of Exhaust Gas Recirculation Valve." In SAE 2010 World Congress & Exhibition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2010. http://dx.doi.org/10.4271/2010-01-0240.

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Li, Xiaolu, and Xiaoming Fang. "A new gasoline injector with exhaust gas recirculation." In 2008 IEEE Vehicle Power and Propulsion Conference (VPPC). IEEE, 2008. http://dx.doi.org/10.1109/vppc.2008.4677617.

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Stefanopoulou, Anna G., and Ilya Kolmanovsky. "Dynamic Scheduling of Internal Exhaust Gas Recirculation Systems." In ASME 1997 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1997. http://dx.doi.org/10.1115/imece1997-0455.

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Abstract In this paper we analyze the nonlinear dynamic behavior of an internal exhaust gas recirculation system based on the mean-value model of an experimental engine equipped with a camshaft phaser. We develop a dynamic camshaft timing schedule that regulates the internal exhaust gas recirculation system while maintaining transient engine torque response similar to an engine with zero exhaust gas recirculation. The dynamic schedule consists of a steady-state map of the camshaft timing for optimum exhaust gas recirculation based on throttle position and engine speed, and a first order lag that regulates the transition of the camshaft timing to the optimum point. A scheme for adjusting the time constant of the first order lag depending on engine speed and throttle position is described.

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Bhargava, Sumit, Nigel Clark, and M. Wayne Hildebrand. "Exhaust Gas Recirculation in a Lean-Burn Natural Gas Engine." In International Fuels & Lubricants Meeting & Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1998. http://dx.doi.org/10.4271/981395.

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Ulmer, Sebastian, and Franz Joos. "Investigation of a Generic Gas Turbine Combustor With Exhaust Gas Recirculation." In ASME Turbo Expo 2013: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/gt2013-94678.

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On the topic of CO2 capture from gas turbines, exhaust gas recirculation (EGR) is a commonly discussed method to increase CO2 concentration at a gas turbine outlet to make the CO2 capture process more efficient. This paper presents the influence of the recirculation on heat release rate and emissions. The investigation is made using the commercial RANS solver ANSYS CFX coupled with an in-house code for a hybrid transported PDF/RANS simulation using detailed chemistry of GRI 3.0. Initially an investigation on reactivity was made using numerical calculation of laminar flame speed. It is found that exhaust gas recirculation has only a minor effect on reactivity in lean premixed combustion. Therefore, the operation point of the combustor can be kept constant with and without EGR. Simulations of the combustor with exhaust gas recirculation using the hybrid PDF/RANS with GRI 3.0 show a minor influence of NO and NO2 doping of the vitiated air on the flame speed and the doping delays heat release slightly. CO doping has no effect on heat release rate. CO emissions at combustor exit remain unaffected by NO, CO or NO2 doping. Seeding the vitiated air with 50ppm nitric oxides reveal that any NO2 present in the vitiated air is reduced to NO in the flame. NO2 emissions increase with NO2 doping but are still 2 magnitudes lower than NO emissions. It is found that NO is reduced by 3% due to of NO reburn. Based on literature data it is concluded that there is a deficit of the GRI 3.0 reaction mechanism. Experimental data taken from literature reveal of NO reburn by approximately 20%. Therefore emission data of nitric oxides of flames that should show a considerable reburn effect should be used with caution, while heat release and CO emissions are predicted more accurately. It is shown, that with the model created for the generic gas turbine combustor it is possible to study the effects of exhaust gas recirculation on the combustion process in detail and resolve detailed kinetic effects.

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Olbrot, Andrzej W., Mohamad H. Berri, and Joseph R. Asik. "Parameter Scheduling Controller for Exhaust Gas Recirculation (EGR) System." In International Congress & Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1997. http://dx.doi.org/10.4271/970620.

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Reports on the topic "Exhaust gas recirculation"

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Briggs, Thomas. Reduced Petroleum Use Through Easily Reformed Fuels and Dedicated Exhaust Gas Recirculation. Office of Scientific and Technical Information (OSTI), February 2020. http://dx.doi.org/10.2172/1661181.

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Neher, Denis, Maurice Kettner, Fino Scholl, Markus Klaissle, Danny Schwarz, and Blanca Gimenez Olavarria. Numerical Investigations of Overexpanded Cycle and Exhaust Gas Recirculation for a Naturally Aspirated Lean Burn Engine. Warrendale, PA: SAE International, October 2013. http://dx.doi.org/10.4271/2013-32-9081.

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Wu, Ko-Jen. The Use of Exhaust Gas Recirculation to Optimize Fuel Economy and Minimize Emission in Engines Operating on E85 Fuel. Office of Scientific and Technical Information (OSTI), December 2011. http://dx.doi.org/10.2172/1162096.

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Lucht, Robert P., Jay Gore, Yiguang Ju, and Michael Mueller. Effects of Exhaust Gas Recirculation (EGR) on Turbulent Combustion and Emissions in Advanced Gas Turbine Combustors with High-Hydrogen-Content (HHC) Fuels (Final Report). Office of Scientific and Technical Information (OSTI), March 2018. http://dx.doi.org/10.2172/1526982.

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Development of 1.5L Dedicated Hybrid Engine with 42.6% Brake Thermal Efficiency. SAE International, December 2021. http://dx.doi.org/10.4271/2021-01-7031.

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To achieve higher brake thermal efficiency (BTE) and improve vehicle economy, the new development of dedicated hybrid engine (DHE), adopting the Atkinson or Miller cycle, has been becoming the current development trends. A base 1.5L natural aspiration (NA) engine with deep Atkinson cycle has been developed for dedicated hybrid vehicle application, which can achieve the highest BTE of 41.19%. In order to achieve higher BTE, several potential technologies which are easy for mass production application have been studied progressively, such as, higher compression ratio (CR), optimized exhaust gas recirculation (EGR) pick point, lower EGR temperature, higher EGR rate, higher RON number fuels, heat transfer reduction by polishing valve head, light boost, lower viscosity oil. The results show the combined technology application can achieve the highest engine BTE of 42.59%. This paper provides the studied technical routine and the achieved benefits step by step.

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