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Pressure in Gas-assisted Injection Molding

Ou Changjin

Strategic Study of CAE 2007, Volume 9, Issue 5,   Pages 27-32

Abstract:

In this study,  an effective control method and strategy based onfuzzy neural network has been developed for gas injection pressure accurate control in gas-assistedinjection. The simulation of the system capability and three segmental injected pressure control are carriedsystem has good characteristics and control action.

Keywords： gas-assisted injection molding     fuzzy neural network     gas-injection pressure control    

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Development of a simplified n-heptane/methane model for high-pressure direct-injection naturalgas marine engines

Jingrui LI, Haifeng LIU, Xinlei LIU, Ying YE, Hu WANG, Xinyan WANG, Hua ZHAO, Mingfa YAO

Frontiers in Energy 2021, Volume 15, Issue 2,   Pages 405-420 doi: 10.1007/s11708-021-0718-3

Abstract: High-pressure direct-injection (HPDI) of natu-ral gas is one of the most promising solutions for futureaddition, these two reduced models were both able to reproduce the experimentally measured in-cylinder pressureand heat release rate profiles for a HPDI natural gas marine engine, the highest error of predictedhigh-efficient and dependable method to simulate the characteristics of combustion and emissions in HPDI natural gas

Keywords： high-pressure direct-injection     natural gas     chemical kinetics     combustion modelling     marine engine    

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CO, N, and CO/N mixed gas injection for enhanced shale gas recovery and CO geological storage

Frontiers in Energy 2023, Volume 17, Issue 3,   Pages 428-445 doi: 10.1007/s11708-023-0865-9

Abstract: flooding tests were conducted to investigate the performance of injecting different gases to enhance shale gasFor the core flooding tests, pure gas injection showed that the breakthrough time of CO2 wasinjection was approximately 44.09%, while the Keywords： shale gas     gas injection     competitive adsorption     enhanced shale gas recovery     CO2 geological    

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Economic Development Models of Gas Condensate Reservoir

Liu Tingyuan

Strategic Study of CAE 2001, Volume 3, Issue 3,   Pages 85-91

Abstract:

Liquid condensate is an important product of gas condensate reservoir, and its recovery should bediscusses economic development models of all kinds during the last two decades in the engineering field of gascondensate reservoirs, including reinjection with 75% dry gas recycling, dumpflooding of gas, nitrogeninjection, water injection, water and gas alternating injection, C〇2 injection, etc.results of the study indicate that these development models will be more effective than conventional pressure

Keywords： gas condensate reservoir     development model     gas injection     nitrogen injection     water injection     CO 2 injection     economic    

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Three-dimensional numerical simulation for plastic injection-compression molding

Yun ZHANG, Wenjie YU, Junjie LIANG, Jianlin LANG, Dequn LI

Frontiers of Mechanical Engineering 2018, Volume 13, Issue 1,   Pages 74-84 doi: 10.1007/s11465-018-0490-1

Abstract:

Compared with conventional injection molding, injection-compression molding can mold optical partsIn this study, a 3D simulation method was developed for injection-compression molding.The melt flow and pressure distribution in the cavity were investigated by using the proposed simulationmethod and compared with those of injection molding.The back flow also plays an important role in the flow pattern and redistribution of cavity pressure.

Keywords： injection-compression molding     simulation     injection molding     melt flow     cavity pressure    

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Assessment and validation of liquid breakup models for high-pressure dense diesel sprays

Yi REN,Xianguo LI

Frontiers in Energy 2016, Volume 10, Issue 2,   Pages 164-175 doi: 10.1007/s11708-016-0407-9

Abstract: the consequent mixture formation, combustion behavior, and emission formation processes in a direct injectionIn this paper, different models for liquid breakup processes in high-pressure dense diesel sprays andRayleigh-Taylor (RT) breakup model gives the most reasonable predicted results in both engine simulation and high-pressurebased models and the RT model do not provide reasonable predictions for the characteristics of high-pressure

Keywords： breakup model     diesel engine     high-pressure injection     simulations    

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Photodynamic therapy combined with intravitreal injection of triamcinolone acetonide for choroidal neovascularization

YU Xiaobing, DAI Hong, LU Yingyi, LONG Li

Frontiers of Medicine 2007, Volume 1, Issue 4,   Pages 405-409 doi: 10.1007/s11684-007-0079-2

Abstract: research was to evaluate the efficacy and safety of photodynamic therapy (PDT) combined with intravitreal injectionPDT combined with intravitreal injection of TA was performed on 16 eyes of 16 patients with CNV diagnosedBest-corrected visual acuity, intraocular pressure, retinal thickness and FFA were observed.pressure returned to the normal after a transient treatment with anti-glaucoma medication.PDT combined with intravitreal injection of TA for CNV is safe and effective.

Keywords： intraocular pressure     fluorescein fundus     transient treatment     Transient intraocular     number    

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semi-volatile organic compounds in water using automated online solid-phase extraction with large-volume injection/gas chromatography/mass spectrometry

Yongtao LI, Christina L. MCCARTY, Ed J. GEORGE

Frontiers of Environmental Science & Engineering 2011, Volume 5, Issue 3,   Pages 417-425 doi: 10.1007/s11783-011-0310-x

Abstract: online solid-phase extraction technique coupled with programmed-temperature vaporization large-volume injectiongas chromatography/mass spectrometry.

Keywords： automated solid-phase extraction     programmed-temperature vaporization     large-volume injection     gas chromatography    

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Effect of ignition timing and hydrogen fraction on combustion and emission characteristics of natural gasdirect-injection engine

WANG Jinhua, HUANG Zuohua, LIU Bing, ZENG Ke, YU Jinrong, JIANG Deming

Frontiers in Energy 2008, Volume 2, Issue 2,   Pages 194-201 doi: 10.1007/s11708-008-0035-0

Abstract: An experimental study on the combustion and emission characteristics of a direct-injection spark-ignitedThe interval between the end of fuel injection and ignition timing is a very important parameter fordirect-injection natural gas engines.The maximum cylinder gas pressure, maximum mean gas temperature, maximum rate of pressure rise and maximumThe brake mean effective pressure and the effective thermal efficiency of natural gas/hydrogen mixture
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Effects of Fischer-Tropsch diesel fuel on combustion and emissions of direct injection diesel engine

HUANG Yongcheng, WANG Shangxue, ZHOU Longbao

Frontiers in Energy 2008, Volume 2, Issue 3,   Pages 261-267 doi: 10.1007/s11708-008-0062-x

Abstract: Fischer-Tropsch (F-T) diesel fuel on the combustion and emission characteristics of a single-cylinder direct injectionfuel exhibits shorter ignition delay, lower peak values of premixed burning rate, lower combustion pressureand pressure rise rate, and higher peak value of diffusion burning rate than conventional diesel fuelcombustion duration is obviously shortened; the peak values of premixed burning rate, the combustion pressureand pressure rise rate are further reduced; and the peak value of diffusion burning rate is further

Keywords： combustion pressure     further     HC     operation     single-cylinder    

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CFD evaluation of pressure drop across a 3-D filter housing for industrial gas turbine plants

Fidelis I. ABAM,Samuel O. EFFIOM,Olayinka S. OHUNAKIN

Frontiers in Energy 2016, Volume 10, Issue 2,   Pages 192-202 doi: 10.1007/s11708-016-0406-x

Abstract: This paper investigated the flow distribution and total pressure drop across a designed 3-D filter housingThe filter housing model was proposed for a heavy-duty industrial gas turbine plant operating at an averageambient temperature of 20°C.The pressure drops across the classes of filters were 652.8 Pa, 2692.2 PaThe results obtained indicated an acceptable total pressure drop of 7.2% for the entire filter housing

Keywords： computational fluid dynamics (CFD)     pressure drop     flow distribution     filter housing     gas turbine    

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Trends of process parameters impact on forming quality of part during the gas-assisted injection molding

Qiu Shuijin,Jiang Shaofei,Chai Guozhong,Lu Congda

Strategic Study of CAE 2009, Volume 11, Issue 4,   Pages 84-90

Abstract: justify;">This paper investigates process optimization for the specific rib with section s-3 during the gas-assistedinjection molding firstly, which is to get relationship between process parameters and quality evaluations

Keywords： gas-assisted injection molding     rib     Taguchi experiment design    

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Injection Strategy in Natural Gas-Diesel Dual-Fuel Premixed Charge Compression Ignition Combustion under Article

Hyunwook Park, Euijoon Shim, Choongsik Bae

Engineering 2019, Volume 5, Issue 3,   Pages 548-557 doi: 10.1016/j.eng.2019.03.005

Abstract: When natural gas (NG) is applied to a DF-PCCI engine, its low reactivity reduces the maximum pressureIn this study, an injection strategy of fuel supply (NG and diesel) in a DF-PCCI engine was investigatedvariation in the NG substitution and diesel start of energizing (SOE) was found to effectively
controlA double injection strategy of diesel was implemented to adjust the local reactivity of the mixture.The introduction of exhaust gas recirculation (EGR) improved the fuel economy and reduced the NO<

Keywords： Reactivity controlled compression ignition     Premixed charge compression ignition     Natural gas     Injectionstrategy     Exhaust gas recirculation    

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engine performance with high compression ratio based on knock suppression using Miller cycle with boost pressureand split injection

Haiqiao WEI, Jie YU, Lei ZHOU

Frontiers in Energy 2019, Volume 13, Issue 4,   Pages 691-706 doi: 10.1007/s11708-019-0621-3

Abstract: the application of high compression ratio on a gasoline engine based on the Miller cycle with boost pressureand split injection.It was found that a high level of Miller cycle with a higher boost pressure could be used in CR12 tofuel consumption of CR12 at full load could be achieved by using the strong Miller cycle and split injection

Keywords： high compression ratio     knock     Miller cycle     split injection     engine performance    

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Control of homogeneous charge compression ignition combustion in a two-cylinder gasoline direct injection

WANG Zhi, WANG Jianxin, SHUAI Shijin, MA Qingjun, TIAN Guohong

Frontiers in Energy 2007, Volume 1, Issue 3,   Pages 311-315 doi: 10.1007/s11708-007-0045-3

Abstract: Homogeneous charge compression ignition (HCCI) has challenges in ignition timing control, combustionrate control, and operating range extension.In this paper, HCCI combustion was studied in a two-cylinder gasoline direct injection (GDI) engine withA two-stage gasoline direct injection strategy combined with negative valve overlap was used to controloperated in HCCI combustion mode at a speed range of 800–2 200 r/min and load, indicated mean effective pressure

Keywords： Homogeneous     control     combustion     consumption     extension    

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Title Author Date Type Operation

Pressure in Gas-assisted Injection Molding

Ou Changjin

Journal Article

Development of a simplified n-heptane/methane model for high-pressure direct-injection naturalgas marine engines

Jingrui LI, Haifeng LIU, Xinlei LIU, Ying YE, Hu WANG, Xinyan WANG, Hua ZHAO, Mingfa YAO

Journal Article

CO, N, and CO/N mixed gas injection for enhanced shale gas recovery and CO geological storage

Journal Article

Economic Development Models of Gas Condensate Reservoir

Liu Tingyuan

Journal Article

Three-dimensional numerical simulation for plastic injection-compression molding

Yun ZHANG, Wenjie YU, Junjie LIANG, Jianlin LANG, Dequn LI

Journal Article

Assessment and validation of liquid breakup models for high-pressure dense diesel sprays

Yi REN,Xianguo LI

Journal Article

Photodynamic therapy combined with intravitreal injection of triamcinolone acetonide for choroidal neovascularization

YU Xiaobing, DAI Hong, LU Yingyi, LONG Li

Journal Article

semi-volatile organic compounds in water using automated online solid-phase extraction with large-volume injection/gas chromatography/mass spectrometry

Yongtao LI, Christina L. MCCARTY, Ed J. GEORGE

Journal Article

Effect of ignition timing and hydrogen fraction on combustion and emission characteristics of natural gasdirect-injection engine

WANG Jinhua, HUANG Zuohua, LIU Bing, ZENG Ke, YU Jinrong, JIANG Deming

Journal Article

Effects of Fischer-Tropsch diesel fuel on combustion and emissions of direct injection diesel engine

HUANG Yongcheng, WANG Shangxue, ZHOU Longbao

Journal Article

CFD evaluation of pressure drop across a 3-D filter housing for industrial gas turbine plants

Fidelis I. ABAM,Samuel O. EFFIOM,Olayinka S. OHUNAKIN

Journal Article

Trends of process parameters impact on forming quality of part during the gas-assisted injection molding

Qiu Shuijin,Jiang Shaofei,Chai Guozhong,Lu Congda

Journal Article

Injection Strategy in Natural Gas-Diesel Dual-Fuel Premixed Charge Compression Ignition Combustion under

Hyunwook Park, Euijoon Shim, Choongsik Bae

Journal Article

engine performance with high compression ratio based on knock suppression using Miller cycle with boost pressureand split injection

Haiqiao WEI, Jie YU, Lei ZHOU

Journal Article

Control of homogeneous charge compression ignition combustion in a two-cylinder gasoline direct injection

WANG Zhi, WANG Jianxin, SHUAI Shijin, MA Qingjun, TIAN Guohong

Journal Article