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Journal articles on the topic 'Low-pressure injection'

Author: Grafiati
Published: 22 February 2025

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1

Arès, Francis, Dorian Delbergue, and Vincent Demers. "Injection Flow Rate Threshold Preventing Atypical In-Cavity Pressure during Low-Pressure Powder Injection Molding." Powders 2, no. 4 (2023): 709–26. http://dx.doi.org/10.3390/powders2040044.

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Controlling injection parameters is paramount when it comes to producing high-quality green parts using powder injection molding. This work combines experimental and numerical approaches to study the impact of injection parameters on mold in-cavity pressure and on the overall quality of green parts produced by low-pressure powder injection molding. The properties of two low-viscosity feedstocks (formulated from a water-atomized stainless-steel powder and wax-based binder system) were measured and implemented in an Autodesk Moldflow numerical model to quantify the molding pressures, which were
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2

Hu, Zhen, Shuang Yuan, Hong Wei, et al. "High-pressure injection or low-pressure injection for a direct injection hydrogen engine?" International Journal of Hydrogen Energy 59 (March 2024): 383–89. http://dx.doi.org/10.1016/j.ijhydene.2024.02.018.

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3

Navarro, C., R. Fernández-Escobar, and M. Benlloch. "A Low-pressure, Trunk-injection Method for Introducing Chemical Formulations into Olive Trees." Journal of the American Society for Horticultural Science 117, no. 2 (1992): 357–60. http://dx.doi.org/10.21273/jashs.117.2.357.

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A low-pressure injection method for introducing chemical formulations into trees is presented. The apparatus consists of a plastic injector and a tube providing a pressure of 60 to 80 kPa, which is below the injurious level for the xylem. The efficiency of the method was determined by injecting PTS, a marker of apoplastic flux dye solutions, and rubidium chloride into young trees, main scaffolds, or tree trunks. The depth of the hole drilled) and the number of injections necessary to distribute the solutions was also determined. The injected solutions moved mainly upward through the older ring
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4

Chen, Tao Ping, and Xian Xi Su. "Experimental Study of the Effect of Injection Different Kinds of Water on Extra Low Permeability Reservoir." Advanced Materials Research 968 (June 2014): 206–10. http://dx.doi.org/10.4028/www.scientific.net/amr.968.206.

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The experiment study effect of injection different kinds of water on extra low permeability reservoir of Yushulin Oilfield. In the condition of actual temperature and pressure of the reservoir, through the experimental study the effect of injection different kinds of water on extra low permeability core. Experiments include injecting clean water, injecting clean water with scale inhibitor, injecting traditional treated sewage, injecting deep treated sewage, injecting deep treated sewage with scale inhibitor. The experimental results show that: Long term injecting clean water and clean water wi
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5

Jeftić, Marko, Zhenyi Yang, Graham T. Reader, and Ming Zheng. "Fuel efficiency analysis and peak pressure rise rate improvement for neat n-butanol injection strategies." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 231, no. 1 (2016): 50–65. http://dx.doi.org/10.1177/0954407016632141.

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Engine tests were conducted to investigate the efficiency and the peak pressure rise rate performance of different fuel injection strategies for the direct injection of neat n-butanol in a compression ignition engine. Three different strategies were tested: a single-shot injection; a pilot injection; a post-injection. A single-shot injection timing sweep revealed that early injections had the highest indicated efficiency while late injections reduced the peak pressure rise rate at the cost of a slightly reduced thermal efficiency. Delayed single-shot injections also had increased emissions of
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6

Liu, Mingyang, Hu Wen, Shixing Fan, et al. "Experimental Study of CO2-ECBM by Injection Liquid CO2." Minerals 12, no. 3 (2022): 297. http://dx.doi.org/10.3390/min12030297.

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Coal mine gas disasters have severely restricted production safety. Improving gas extraction efficiency can effectively reduce disasters. Scholars have confirmed that CO2 successfully displaces coal seam CH4. This study conducted displacement and in situ experiments and compared gas drainage under different injection pressures. The displacement experiments indicated that CH4 production rates increased under increased pressures while the displacement ratios decreased. The pressure had a positive effect on sweep efficiency. The in situ experiment showed that CH4 and CO2 concentration trends in t
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7

JIA, Lidong. "Experiment of Low-pressure Injection Using Methanol." Journal of Mechanical Engineering 48, no. 20 (2012): 153. http://dx.doi.org/10.3901/jme.2012.20.153.

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8

Shaffer, Peter T. B. "The Advantage of Low Pressure Injection Molding." Materials Technology 8, no. 3-4 (1993): 57–59. http://dx.doi.org/10.1080/10667857.1993.11784939.

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9

Gonçalves, Aparecido Carlos. "Metallic powder injection molding using low pressure." Journal of Materials Processing Technology 118, no. 1-3 (2001): 193–98. http://dx.doi.org/10.1016/s0924-0136(01)00916-5.

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10

HORIBA, Toshinaka, Nobushige TAMAKI, and Masanori SHIMIZU. "Fundamental Study of Low Pressure Injection Nozzle." Proceedings of Conference of Chugoku-Shikoku Branch 2002.40 (2002): 165–66. http://dx.doi.org/10.1299/jsmecs.2002.40.165.

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11

Krindges, Israel, Raquel Andreola, Cláudio A. Perottoni, and Janete E. Zorzi. "Low-Pressure Injection Molding of Ceramic Springs." International Journal of Applied Ceramic Technology 5, no. 3 (2008): 243–48. http://dx.doi.org/10.1111/j.1744-7402.2008.02226.x.

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12

Lamarre, Simon G., Vincent Demers, and Jean-François Chatelain. "Low-pressure powder injection molding using an innovative injection press concept." International Journal of Advanced Manufacturing Technology 91, no. 5-8 (2017): 2595–605. http://dx.doi.org/10.1007/s00170-016-9889-1.

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13

Yun, H., and R. D. Reitz. "Combustion optimization in the low-temperature diesel combustion regime." International Journal of Engine Research 6, no. 5 (2005): 513–24. http://dx.doi.org/10.1243/146808705x30576.

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A microgenetic algorithm (μGA) code was applied to optimize experimentally an HSDI single-cylinder diesel engine equipped with a common rail fuel-injection system in order to reduce NOx, soot, and b.s.f.c. simultaneously. Four control factors were used, namely, start-of-injection (SOI) timing, intake boost pressure level, cooled exhaust gas recirculation (EGR) rate, and fuel-injection pressure. The search space was designed to be within the experimental capabilities of the engine and control system. The engine testing was done at 1550 r/min, and 25 per cent load. The optimum results showed sig
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14

Zhang, Rongrong, and Daifen Chen. "Investigation of Diesel Spray Characteristics in Low-temperature and Low-pressure Conditions." Bulletin of Science and Practice 10, no. 5 (2024): 383–96. http://dx.doi.org/10.33619/2414-2948/102/48.

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This study investigates the influence of altitude and injection pressure on diesel fuel spray characteristics, aiming to optimize diesel usage in high-altitude conditions. Experiments were conducted at three altitude levels (plains, 1670 m, and 2400 m) with corresponding atmospheric pressures and temperatures, alongside six injection pressures ranging from 50 MPa to 100 MPa. The investigation focused on key spray parameters: equivalence ratio, spray penetration velocity, turbulence kinetic energy, evaporation rate, spray penetration distance, and Sauter Mean Diameter (SMD). Findings indicate t
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15

Kang, Seungwoo, Sanguk Lee, and Choongsik Bae. "Effects of Multi-Stage Split Injection on Efficiency and Emissions of Light-Duty Diesel Engine." Energies 15, no. 6 (2022): 2219. http://dx.doi.org/10.3390/en15062219.

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The efficiency of light-duty diesel engines should be improved for further emissions regulation. Multi-stage split injection with five injection events was investigated for improvement in efficiency at low-load conditions. The injection timing and quantity were adjusted to achieve a smooth in-cylinder pressure rise and continuous heat release. The multi-stage split injection was compared to injection strategies involving two-pilot and single-main injections. A 0.5 L single-cylinder diesel engine experiment was conducted under low-load conditions. Two multi-stage split injection processes with
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16

Li, Yuan, Jinxiang Liu, Weiqing Huang, and Nana Wang. "Effect of In-Cylinder Low-Pressure Direct Injection Strategy on the Atomization and Combustion Process of a Small-Scaled Gasoline Wankel Rotary Engine." International Journal of Energy Research 2023 (February 6, 2023): 1–14. http://dx.doi.org/10.1155/2023/3716468.

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To solve the problem of poor atomization and combustion in a small-scaled gasoline Wankel rotary engine (WRE) with low-pressure port injection mode, the numerical simulation was used to optimize the injection strategy. Firstly, the effects of in-cylinder temperature and pressure on gasoline atomization characteristics were studied, and the optimal injection timing was determined. Based on this, the influence of injection position, injection angle, and installation direction on the atomization, fuel-air mixing, and combustion processes of low-pressure direct injection (DI) small-scaled gasoline
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17

Soares, J. P. "Low-pressure injection moulding of stainless steel powders." Metal Powder Report 57, no. 4 (2002): 42. http://dx.doi.org/10.1016/s0026-0657(02)80156-4.

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18

Momeni, Vahid, Margarete Hufnagl, Zahra Shahroodi, et al. "Research Progress on Low-Pressure Powder Injection Molding." Materials 16, no. 1 (2022): 379. http://dx.doi.org/10.3390/ma16010379.

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Powder injection molding (PIM) is a well-known technique to manufacture net-shaped, complicated, macro or micro parts employing a wide range of materials and alloys. Depending on the pressure applied to inject the feedstock, this process can be separated into low-pressure (LPIM) and high-pressure (HPIM) injection molding. Although the LPIM and HPIM processes are theoretically similar, all steps have substantial differences, particularly feedstock preparation, injection, and debinding. After decades of focusing on HPIM, low-viscosity feedstocks with improved flowability have recently been produ
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19

Millán, A. J., M. Bravo, R. Moreno, and M. I. Nieto. "Moldeo por inyección a baja presión de suspensiones cerámicas." Boletín de la Sociedad Española de Cerámica y Vidrio 38, no. 2 (1999): 93–99. http://dx.doi.org/10.3989/cyv.1999.v38.i2.965.

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20

Wu, Qiong. "Analysis of reducing pressure and increasing injection in high pressure water injection block of low permeability reservoir." E3S Web of Conferences 358 (2022): 02028. http://dx.doi.org/10.1051/e3sconf/202235802028.

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The plugging phenomenon near the well zone of oil injection well will seriously affect the water injection development of oil field, and then affect the exploitation of oil resources. The water injection development of low permeability reservoir is affected by various factors. Due to the large difference between layers and the serious interference between layers, the physical property of oil layer is relatively poor, and the water injection pressure shows a trend of increasing year by year, which has a great impact on the development of oil resources. As the oilfield development benefit is not
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21

Gao, Tongyang, Shui Yu, Tie Li, and Ming Zheng. "Impacts of multiple pilot diesel injections on the premixed combustion of ethanol fuel." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 232, no. 6 (2017): 738–54. http://dx.doi.org/10.1177/0954407017706858.

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Engine experiments were carried out to study the impact of multiple pilot injections of a diesel fuel on dual-fuel combustion with a premixed ethanol fuel, using compression ignition. Because of the contrasting volatility and the reactivity characteristics of the two fuels, the appropropriate scheduling of pilot diesel injections in a high-pressure direct-injection process is found to be effective for improving the clean and efficient combustion of ethanol which is premixed with air using a low-pressure port injection. The timing and duration of each of the multiple pilot injections were inves
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22

Rahimi Boldaji, Mozhgan, Aimilios Sofianopoulos, Sotirios Mamalis, and Benjamin Lawler. "Computational fluid dynamics investigations of the effect of water injection timing on thermal stratification and heat release in thermally stratified compression ignition combustion." International Journal of Engine Research 20, no. 5 (2018): 555–69. http://dx.doi.org/10.1177/1468087418767451.

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Advanced combustion concepts, like homogeneous charge compression ignition, are limited by their narrow operating range, which stems from a lack of control over the heat release process. This study explores a new advanced combustion mode, called thermally stratified compression ignition, which uses a direct water injection event to control the heat release process in low-temperature combustion. A three-dimensional computational fluid dynamics model coupled with detailed chemical kinetics is used to better understand the effects of direct water injection on thermal stratification in the cylinde
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23

Cui, Chuanzhi, Guobiao Wang, and Shuiqingshan Lu. "Study on the influencing factors of productivity under pressure drive development in low permeability reservoir." E3S Web of Conferences 375 (2023): 01050. http://dx.doi.org/10.1051/e3sconf/202337501050.

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The productivity of low-permeability reservoirs is affected by multiple factors. After the development of water injection by pressure drive, it will also be affected by factors such as construction, resulting in large differences in the productivity of different oil wells. According to reservoir engineering knowledge, the factors affecting the productivity of pressure drive water injection development are preliminarily determined. The conceptual model of pressure drive water injection development of low permeability reservoir is established by numerical simulation method. Combined with orthogo
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24

Wang, Huping, Zhao Wang, Haikui Yin, Chao Jin, Xiaogang Zhang, and Langtao Liu. "CO2 Flow Characteristics in Macro-Scale Coal Sample: Effect of CO2 Injection Pressure and Buried Depth." Sustainability 15, no. 10 (2023): 8002. http://dx.doi.org/10.3390/su15108002.

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Experimental studies have confirmed the permeability reduction of coal samples upon the adsorption of CO2. However, these studies were carried out under limited experimental conditions. In this study, CO2 flow behaviors in a macro-scale coal sample were numerically simulated using a coupled gas flow, mechanical deformation, and sorption-induced deformation finite element model. The simulation results show that the effect of the reduction of effective stress on the enhancement of permeability is greater than the negative effect of permeability reduction due to CO2 adsorption for low injection p
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25

Yoshida, Kenji, Eri Tanaka, Hiroyoshi Kawaai, and Shinya Yamazaki. "Effect of Injection Pressure of Infiltration Anesthesia to the Jawbone." Anesthesia Progress 63, no. 3 (2016): 131–38. http://dx.doi.org/10.2344/15-00024.1.

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To obtain effective infiltration anesthesia in the jawbone, high concentrations of local anesthetic are needed. However, to reduce pain experienced by patients during local anesthetic administration, low-pressure injection is recommended for subperiosteal infiltration anesthesia. Currently, there are no studies regarding the effect of injection pressure on infiltration anesthesia, and a standard injection pressure has not been clearly determined. Hence, the effect of injection pressure of subperiosteal infiltration anesthesia on local anesthetic infiltration to the jawbone was considered by di
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26

Zhu, Xiulan, Yanlong Ran, and Yidong Yuan. "Research on optimization of development technology policy for low-permeability and low-pressure reservoir in Yangbaishan Block." E3S Web of Conferences 118 (2019): 01029. http://dx.doi.org/10.1051/e3sconf/201911801029.

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There are poor physical properties and insufficient natural energy in the low-permeability and low-pressure reservoir of the Yangbaishan Block. Early this reservoir was mined by natural energy with a serious producing energy deficit. Subsequently, it was developed with mild water injection. During the water injection development, water quickly slid into the oil well along the crack, oil production decreased sharply and water content increased rapidly in the oil well, the water flooded well and the ineffective well gradually increased. Therefore, based on the reservoir geological characteristic
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27

Banji, Titilope Ibukun, Gregg Arney, and Daniel B. Olsen. "Fuel Injection Optimization for Large-Bore Two-Stroke Natural-Gas Engines." Energies 18, no. 3 (2025): 624. https://doi.org/10.3390/en18030624.

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Recent methane emissions regulations present a challenge for the large-bore, natural-gas-fueled engines used at over 1700 compression stations across the US. Poor air–fuel mixing in the main combustion chamber of these engines results in low combustion efficiency and the resulting methane emissions. High-pressure fuel injection is believed to be a significant development in improving air–fuel mixing in natural-gas engine combustion chambers. This study aims to determine the sensitivity of in-cylinder mixing to injection pressures using Computational Fluid Dynamics (CFD) simulations, determine
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28

Virt, Márton, Gergely Granovitter, Máté Zöldy, Ádám Bárdos, and Ádám Nyerges. "Multipulse Ballistic Injection: A Novel Method for Improving Low Temperature Combustion with Early Injection Timings." Energies 14, no. 13 (2021): 3727. http://dx.doi.org/10.3390/en14133727.

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Nowadays, increasingly stricter regulations on emission reduction are inducing rapid developments in combustion science. Low-temperature combustion (LTC) is an advanced combustion technology that increases an engine’s thermal efficiency and even provides low emissions of nitrogen oxides (NOx) and particulate matter (PM). The technology often uses early direct injections to achieve sufficient mixture homogeneity. This leads to increasing wall wetting and lower combustion efficiency. This paper introduces the Multipulse ballistic injection (MBI) method to improve combustion with early injection
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29

Aldila, Migel, Iwan Febrianto, Akhmad Sudirman Saputra, Purnama Timur M.S, and Ninik Purwatiningsih. "The Effect of Carbon Steel Pipeline Deterioration to Water Injection Quality and Pressure Drop in Tanjung Waterflood Injection Plant." Scientific Contributions Oil and Gas 43, no. 1 (2020): 1–6. http://dx.doi.org/10.29017/scog.43.1.389.

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In Tanjung, South Kalimantan, PT Pertamina EP (PEP) use secondary recovery (waterflood injection) for its technique for oil lifting. Low permeability reservoir condition make quality of water injection must be comply with low permeability reservoir requirement and the pressure injection must be around 1400 psig. In the common PEP injection plant, carbon steel pipeline is still used. Flakes accumulation and trapped oil could occur along with the deterioration of carbon steel pipeline. This matter can make the quality of requirements of injection water become worst. There were four data were ana
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30

Jeong, Eunju, Sean O’Byrne, In-Seuck Jeung, and A. F. P. Houwing. "The Effect of Fuel Injection Location on Supersonic Hydrogen Combustion in a Cavity-Based Model Scramjet Combustor." Energies 13, no. 1 (2020): 193. http://dx.doi.org/10.3390/en13010193.

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Supersonic combustion experiments were performed using three different hydrogen fuel-injection configurations in a cavity-based model scramjet combustor with various global fuel–air equivalence ratios. The configurations tested were angled injection at 15° to the flow direction upstream of the cavity, parallel injection from the front step, and upstream injection from the rear ramp. Planar laser-induced fluorescence of the hydroxyl radical and time-resolved pressure measurements were used to investigate the flow characteristics. Angled injection generated a weak bow shock in front of the injec
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31

Canakci, M., and R. D. Reitz. "Experimental optimization of a direct injection homogeneous charge compression ignition gasoline engine using split injections with fully automated microgenetic algorithms." International Journal of Engine Research 4, no. 1 (2003): 47–60. http://dx.doi.org/10.1243/146808703762826642.

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Homogeneous charge compression ignition (HCCI) is receiving attention as a new low-emission engine concept. Little is known about the optimal operating conditions for this engine operation mode. Combustion under homogeneous, low equivalence ratio conditions results in modest temperature combustion products, containing very low concentrations of NOx and particulate matter (PM) as well as providing high thermal efficiency. However, this combustion mode can produce higher HC and CO emissions than those of conventional engines. An electronically controlled Caterpillar single-cylinder oil test engi
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32

Ikegami, R. A., and B. de M. Purquerio. "The Low Pressure Injection Moulding of Stainless Steel Powder." Key Engineering Materials 189-191 (February 2001): 467–72. http://dx.doi.org/10.4028/www.scientific.net/kem.189-191.467.

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33

Zampieron, J. V., J. P. Soares, F. Mathias, J. L. Rossi, and Francisco Ambrozio Filho. "Low Pressure Powder Injection Moulding of Stainless Steel Powders." Key Engineering Materials 189-191 (February 2001): 610–15. http://dx.doi.org/10.4028/www.scientific.net/kem.189-191.610.

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34

Germanaud, Jacques, and Andr?? Rousseau. "Necrosis After Low-Pressure Injection Injury of the Hand." Journal of Occupational and Environmental Medicine 35, no. 7 (1993): 655. http://dx.doi.org/10.1097/00043764-199307000-00007.

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35

Schmidt, Stephan, Alexander Trattner, Helmut Eichlseder, and Roland Kirchberger. "Combustion Processes for a low pressure gasoline direct injection." MTZ worldwide 72, no. 7-8 (2011): 72–78. http://dx.doi.org/10.1365/s38313-011-0080-7.

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36

Kim, Jung Hyeun, Heinz Fissan, Christof Asbach, Se-Jin Yook, and David Y. H. Pui. "Speed-controlled particle injection into a low-pressure system." Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films 24, no. 2 (2006): 229–34. http://dx.doi.org/10.1116/1.2165660.

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37

Vučković, Ilvana, Admir Hadžić, Faruk Dilberović, et al. "Detection of neurovascular structures using injection pressure in blockade of brachial plexus in rat." Bosnian Journal of Basic Medical Sciences 5, no. 3 (2005): 79–85. http://dx.doi.org/10.17305/bjbms.2005.3276.

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In the last few decades there has been a great development of regional anesthesia; all the postulates are defined and all the techniques of usage are perfected. However, like any other medical procedure, the block of brachial plexus carries a risk of certain unwanted complications, like possible intraneural and intravascular injections. The reason for great discrepancy between the injury of brachial plexus and other periphery nerves while performing the nerve blockade is the frequent usage of this block, but also the specific proximity of neurovascular structures in axilla. The purpose of this
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38

He, Jin Gang, Kao Ping Song, Jing Yang, Bao Gang Sun, Si Chen, and Sheng Jian Shu. "A Study of Influential Factors of Advance Water Injection in Extra-Low Permeability Reservoir." Applied Mechanics and Materials 487 (January 2014): 255–58. http://dx.doi.org/10.4028/www.scientific.net/amm.487.255.

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This paper study on the permeability, start-up pressure gradient and stress sensitivity of advance water injection in extra-low permeability reservoir in Fuyu Oil layer of Daqing Oilfield. Experimental results show that the reasonable formation pressure level should be at about 120% in the advance water injection experiment, advanced water injection in the the early stage have higher oil production, the water breakthrough, earlier than synchronous water injection has certain inhibitory effect of water cut rise; Under the premise of advance water injection can overcome the start-up pressure, th
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39

Reddy, Ch Kesava, M. V. S. Murali Krishna, P. V. K. Murthy, and T. Ratna Reddy. "Performance Evaluation of a Low-Grade Low-Heat-Rejection Diesel Engine with Crude Pongamia oil." ISRN Renewable Energy 2012 (March 15, 2012): 1–10. http://dx.doi.org/10.5402/2012/489605.

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Investigations are carried out to evaluate the performance of a low heat rejection (LHR) diesel engine with ceramic coated cylinder head [ceramic coating of thickness 500 microns is done on inside portion of cylinder head] with different operating conditions [normal temperature and pre-heated temperature] of crude Pongamia oil (CPO) with varied injection pressure and injection timing. Performance parameters and pollution levels are determined at various magnitudes of brake mean effective pressure. Combustion characteristics at peak load operation of the engine are measured with special pressur
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40

Zhang, Qi Han, Zi Yi Guo, Ji Peng, Ting Song Xiong, and Shi Feng Xue. "Numerical Simulation of Pressure Distribution between Injection and Production Well in Low Permeability Reservoir." Advanced Materials Research 807-809 (September 2013): 2554–57. http://dx.doi.org/10.4028/www.scientific.net/amr.807-809.2554.

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Considering the pressure-sensitive effect and threshold pressure gradient in low permeability reservoirs, a new mathematical model of the variable permeability for reservoir between injection and production well is established. The Garlerkin method is used to set up the finite element computation equations, and corresponding numerical simulation program is developed. The influence of Injection-production pressure, well spacing and hydraulic fracture are quantitative evaluation. The simulation results show that the pressure-sensitive effect and threshold pressure gradient has a strong influence
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41

Ma, Qianqian, Hong Li, Kun Ji, and Fengjun Huang. "Thermal-Hydraulic-Mechanical Coupling Simulation of CO2 Enhanced Coalbed Methane Recovery with Regards to Low-Rank but Relatively Shallow Coal Seams." Applied Sciences 13, no. 4 (2023): 2592. http://dx.doi.org/10.3390/app13042592.

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CO2 injection technology into coal seams to enhance CH4 recovery (CO2-ECBM), therefore presenting the dual benefit of greenhouse gas emission reduction and clean fossil energy development. In order to gaze into the features of CO2 injection’s influence on reservoir pressure and permeability, the Thermal-Hydraulic-Mechanical coupling mechanism of CO2 injection into the coal seam is considered for investigation. The competitive adsorption, diffusion, and seepage flowing of CO2 and CH4 as well as the dynamic evolution of fracture porosity of coal seams are considered. Fluid physical parameters ar
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42

Felayati, Frengki Mohamad, Dwisetiono, Hadi Prasutiyon, and Betty Ariani. "Study on Natural Gas/Diesel Dual-fuel Engine Energy Ratio: Effect of Natural Gas Injection Parameters." IOP Conference Series: Earth and Environmental Science 1081, no. 1 (2022): 012038. http://dx.doi.org/10.1088/1755-1315/1081/1/012038.

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Abstract Natural gas has been a promising demand for several years in Indonesia as a fuel for a diesel engine by converted into a natural gas/diesel dual-fuel engine. However, determining the energy ratio of the diesel and natural gas fuel is important due to the engine performance and emissions which affect the engine safety operation. This study presents the method to determine the natural gas and diesel fuel energy ratio on intake port natural gas injection mode through experiment. A direct injection diesel engine is converted to a natural gas/diesel dual-fuel engine by injecting natural ga
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43

Huang, Xiao Liang. "Reasonably Water Injection Time about Abnormal Pressure of Low Permeability Reservoir." Advanced Materials Research 601 (December 2012): 134–38. http://dx.doi.org/10.4028/www.scientific.net/amr.601.134.

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Abnormal pressure of low permeability reservoirs is a special reservoir, which have some characteristic : low permeability, strong stress sensitivity, complex pore structure, abnormal pressure. with the pressure decreasing about bottom-hole and reservoir, the formation of the rock pore space and permeability will decrease, and reservoir stress-sensitive phenomenon of serious. All these have brought greater difficulty for developing. in order to reasonable development of those reservoirs, maintain the formation energy is important, choose the reasonable injection timing is an important aspect.
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Canakci, M., and R. D. Reitz. "Effect of Optimization Criteria on Direct-Injection Homegeneous Charge Compression Ignition Gasoline Engine Performance and Emissions Using Fully Automated Experiments and Microgenetic Algorithms." Journal of Engineering for Gas Turbines and Power 126, no. 1 (2004): 167–77. http://dx.doi.org/10.1115/1.1635395.

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Homogeneous charge compression ignition (HCCI) is a new low-emission engine concept. Combustion under homogeneous, low equivalence ratio conditions results in modest temperature combustion products, containing very low concentrations of NOx and PM as well as providing high thermal efficiency. However, this combustion mode can produce higher HC and CO emissions than those of conventional engines. Control of the start of combustion timing is difficult with pre-mixed charge HCCI. Accordingly, in the present study charge preparation and combustion phasing control is achieved with direct injection.
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45

Tan, Xiaohua, Jiajia Shi, Dong Hui, Qiu Li, and Tingting Wu. "Material Balance Method and Dynamic Pressure Monitoring for Water-Bearing Gas Reservoirs with CO2 Injection." Energies 16, no. 12 (2023): 4592. http://dx.doi.org/10.3390/en16124592.

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The storage of carbon dioxide by injecting carbon dioxide into gas reservoirs has become an important technique for achieving carbon capture, utilization, and storage. However, most studies have focused on tight gas reservoirs, and there are still few studies on the injection of carbon dioxide into water-bearing gas reservoirs. This paper analyzes the variation of reservoir pressure during CO2 injection and points out the optimal amount of CO2 injection in the reservoir, which can provide theoretical guidance in practical applications. The relationship is plotted between the formation pressure
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46

Candido, Kenneth D. "Concordant Pressure Paresthesia During Interlaminar Lumbar Epidural Steroid Injections Correlates with Pain Relief in Patients with Unilateral Radicular Pain." Pain Physician 5;16, no. 5;9 (2013): 497–511. http://dx.doi.org/10.36076/ppj.2013/16/497.

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Background: Transforaminal and interlaminar epidural steroid injections are commonly used interventional pain management procedures in the treatment of radicular low back pain. Even though several studies have shown that transforaminal injections provide enhanced short-term outcomes in patients with radicular and low back pain, they have also been associated with a higher incidence of unintentional intravascular injection and often dire consequences than have interlaminar injections. Objectives: We compared 2 different approaches, midline and lateral parasagittal, of lumbar interlaminar epidur
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47

Sardarian, M., O. Mirzaee, and A. Habibolahzadeh. "Influence of injection temperature and pressure on the properties of alumina parts fabricated by low pressure injection molding (LPIM)." Ceramics International 43, no. 6 (2017): 4785–93. http://dx.doi.org/10.1016/j.ceramint.2016.11.208.

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Payri, Raul, Joaquin De la Morena, Vincenzo Pagano, Ali Hussain, Gilbert Sammut, and Les Smith. "One-dimensional modeling of the interaction between close-coupled injection events for a ballistic solenoid injector." International Journal of Engine Research 20, no. 4 (2018): 452–69. http://dx.doi.org/10.1177/1468087418760973.

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In this article, an investigation of a solenoid common-rail injector has been carried out to understand the hydraulic interactions between close-coupled injection events. For this purpose, a one-dimensional model of the injector was developed on GT-SUITE software. The geometrical and hydraulic characteristics of the internal elements of the injector, needed to construct the model, were obtained by means of different custom-made experimental tools. The dynamic behavior of the injector was characterized using an EVI rate of injection meter. The hydraulic results from the model show a good alignm
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Liu, Yiqiang, Yufei Meng, Qiyuan Liu, Huijun Zhang, Cheng Chen, and Xiaonan Li. "Effect of multiple injection optimization on combustion characteristics of low-pressure EGR system engine." Journal of Physics: Conference Series 2805, no. 1 (2024): 012012. http://dx.doi.org/10.1088/1742-6596/2805/1/012012.

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Abstract In recent years, reducing oil consumption and pollutant discharge in transportation industry has become an important measure to alleviate energy crisis and environmental pollution. Therefore, the fuel economy and emission characteristics of the engine have become an important index to evaluate the quality of an engine, so EGR technology has gradually become the standard of gasoline engines. But EGR is not always good. In order to alleviate the adverse effects of EGR on combustion, further research on engine combustion is needed. In order to study the effect of multiple injection strat
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Xu, Wenjie, Xigui Zheng, Cancan Liu, et al. "Numerical Simulation Study of High-Pressure Air Injection to Promote Gas Drainage." Sustainability 14, no. 21 (2022): 13699. http://dx.doi.org/10.3390/su142113699.

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Coal-accompanying gas is an essential resource, with numerous mining methods. The practice has proved that injecting high-pressure air into the coal seam can replace and flush the gas in the coal seam, effectively solving the problem of inadequate single gas drainage in soft and low permeability coal seams. This paper uses the finite element method to solve the model, simulate and study the gas drainage by high-pressure air injection in the bedding drilling, and establish a fluid-structure coupling model for gas drainage by high-pressure air injection. The competitive adsorption of N2, O2, and
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