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Performance, emission and combustion characteristics of CI engine fuelled with diesel and hydrogen

R. Senthil KUMAR,M. LOGANATHAN,E. James GUNASEKARAN

Frontiers in Energy 2015, Volume 9, Issue 4,   Pages 486-494 doi: 10.1007/s11708-015-0368-4

Abstract: The brake thermal efficiency (BTE) was increased and brake specific fuel consumption (BSFC) decreased

Keywords： hydrogen     brake thermal efficiency     crank angle     compressed ignition (CI)    

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Coupling evaluation for material removal and thermal control on precision milling machine tools

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 1,   Pages 12-12 doi: 10.1007/s11465-021-0668-9

Abstract: material removal (MR) energy as useful energy consumption and ignored the useful energy consumed by thermalcontrol (TC) for maintaining internal thermal stability and machining accuracy.Hence, the cutting energy efficiency model considering the coupling relationship is established basedThe forced cooling mode of TC results in a 7% reduction in cutting energy efficiency.This paper reveals the coupling effect of MR and TC on energy efficiency and machining accuracy.

Keywords： machine tools     cutting energy efficiency     thermal stability     machining accuracy     coupling evaluation    

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Real-time monitoring of brake shoe keys in freight cars

Rong ZOU,Zhen-ying XU,Jin-yang LI,Fu-qiang ZHOU

Frontiers of Information Technology & Electronic Engineering 2015, Volume 16, Issue 3,   Pages 191-204 doi: 10.1631/FITEE.1400305

Abstract: The brake shoe key (BSK) is an important component in the brake system, and its absence will lead to

Keywords： Condition monitoring     Feature expression     Brake shoe key     Machine vision    

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Wear mechanism of disc-brake block material for new type of drilling rig

WANG Xinhua, WANG Simin, ZHANG Siwei, WANG Deguo

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 1,   Pages 10-16 doi: 10.1007/s11465-008-0009-2

Abstract: To improve friction and wear performance and service life of the disc-brake pair material of a drillingrig, a new type of asbestos-free frictional material with better performance for disc-brake blocks isof the brake block.Thermal decomposition of cohesive material in the brake block is simultaneously strengthened, so thatIn addition, thermal cracking, thermal oxidization, carbonization and cyclization of organic substances

Keywords： asbestos-free frictional     Fracture     cyclization     friction     disc-brake    

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Optimization of the power, efficiency and ecological function for an air-standard irreversible Dual-Miller

Zhixiang WU, Lingen CHEN, Yanlin GE, Fengrui SUN

Frontiers in Energy 2019, Volume 13, Issue 3,   Pages 579-589 doi: 10.1007/s11708-018-0557-z

Abstract: To analyze the effects of the cut-off ratio ( ) and Miller cycle ratio ( ) on the power output ( ), thermalefficiency ( ) and ecological function ( ), obtain the optimal and optimal , and compare the performanceThe effects of and on , , , maximum power output ( ), maximum efficiency ( ) and maximum ecologicalThe results show that the irreversible DMC engine can reach a twice-maximum power, a twice-maximum efficiency

Keywords： finite-time thermodynamics     Dual-Miller cycle     power output     thermal efficiency     ecological function    

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distribution of modulated multi-pulse injection modes based diesel HCCI combustion and their effects on engine thermalefficiency and emissions

LIU Bin, SU Wanhua, WANG Hui, HUANG Haozhong

Frontiers in Energy 2007, Volume 1, Issue 4,   Pages 420-427 doi: 10.1007/s11708-007-0061-7

Abstract: Cycle fuel energy distribution and combustion characteristics of early in-cylinder diesel homogenous charge compression ignition (HCCI) combustion organized by modulated multi-pulse injection modes are studied by the engine test.

Keywords： combustion     compression     homogenous     in-cylinder     modulated multi-pulse    

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Thermal and energy analysis of a Chinese kang

Zhi ZHUANG, Yuguo LI, Xudong YANG, Bin CHEN, Jiaping LIU,

Frontiers in Energy 2010, Volume 4, Issue 1,   Pages 84-92 doi: 10.1007/s11708-010-0009-x

Abstract: building energy analysis software in China–DeST, and the integrated software can be used for the thermalBased on the simulation results, it is found that the thermal comfort requirement of the outside surface

Keywords： Chinese kang     elevated kang     rural house thermal modeling     building energy efficiency     DeST    

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Transient analysis of thermoelastic contact problem of disk brakes

Ali BELHOCINE, Mostefa BOUCHETARA

Frontiers of Mechanical Engineering 2013, Volume 8, Issue 2,   Pages 150-159 doi: 10.1007/s11465-013-0266-6

Abstract: main purpose of this study is to analyze the thermomechanical behavior of the dry contact between the brakeThe thermal-structural analysis is then used with coupling to determine the deformation established and

Keywords： brake disks     heat flux     heat-transfer coefficient     Von Mises stress     contact pressure    

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Peroxyacetyl nitrate measurements by thermal dissociation–chemical ionization mass spectrometry in an

Xinfeng Wang, Tao Wang, Likun Xue, Wei Nie, Zheng Xu, Steven C. N. Poon, Wenxing Wang

Frontiers of Environmental Science & Engineering 2017, Volume 11, Issue 4, doi: 10.1007/s11783-017-0925-7

Abstract: A rapid and highly selective technique of thermal dissociation–chemical ionization mass spectrometryThe formation efficiency of PAN during pollution episodes was as high as 3.9 to 5.9 ppbv per 100 ppbv

Keywords： TD-CIMS     Peroxyacetyl nitrate     Interference     Photochemical pollution     Formation efficiency    

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Experimental study of heat transfer coefficient with rectangular baffle fin of solar air heater

Foued CHABANE,Nesrine HATRAF,Noureddine MOUMMI

Frontiers in Energy 2014, Volume 8, Issue 2,   Pages 160-172 doi: 10.1007/s11708-014-0321-y

Abstract: To determine the enhancement in heat transfer and increment in thermal efficiency, the values of Nusselt

Keywords： Nusselt number     flow rate     heat transfer     heat transfer coefficient     thermal efficiency     forced convection    

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A High-Efficiency Two-Stroke Engine Concept: The Boosted Uniflow Scavenged Direct-Injection Gasoline Review

Xinyan Wang, Hua Zhao

Engineering 2019, Volume 5, Issue 3,   Pages 535-547 doi: 10.1016/j.eng.2019.03.008

Abstract: in order to achieve aggressive engine downsizing and down-speeding for higher engine performance and efficiencyThe results showed that a maximum brake thermal efficiency of 47.2% can be achieved for the two-strokeA peak brake toque of 379 N∙m and a peak brake power density of 112 kW∙L−1 were achieved

Keywords： Two-stroke engine     Uniflow scavenging     Engine design     Engine simulation     Scavenging performance     Thermalefficiency    

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Three-dimensional electromagnetic analysis and design of permanent magnet retarder

Lezhi YE, Desheng LI, Bingfeng JIAO

Frontiers of Mechanical Engineering 2010, Volume 5, Issue 4,   Pages 438-441 doi: 10.1007/s11465-010-0111-0

Abstract: An eddy current retarder for vehicles generates much heat when it works continuously, which leads to serious decline in braking torque. This paper proposes a novel permanent magnet retarder (PMR) for vehicles, whose cooling system connects with engine cooling-water. A three-dimensional finite element model is developed to model the electromagnetic behavior of a permanent magnet retarder under a constant speed. The magnetic field and eddy current field in PMR are numerically solved by a finite element method. By accounting for the nonlinear permeability of the rotor and the weakened effect in the magnetic field that is generated by the eddy current magnetic field, the calculation accuracy of air-gap magnetic field is enhanced. Experiment shows that the temperature of the retarder is less than 150°C, and the braking torque keeps the hard characteristics curve. The calculated air-gap magnetic flux density is fairly good agreement with the measured one.

Keywords： auxiliary brake     permanent magnet retarder     water-cooling     finite element method    

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The effect of different agricultural management practices on irrigation efficiency, water use efficiency

La ZHUO, Arjen Y. HOEKSTRA

Frontiers of Agricultural Science and Engineering 2017, Volume 4, Issue 2,   Pages 185-194 doi: 10.15302/J-FASE-2017149

Abstract: This paper explores the effect of varying agricultural management practices on different water efficiencyindicators: irrigation efficiency (IE), crop water use efficiency (WUE), and green and blue water footprintImprovements in one water efficiency indicator may cause a decline in another.

Keywords： field management     irrigation efficiency     water footprint     water productivity     water use efficiency    

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Impact of oxygen enriched combustion on the performance of a single cylinder diesel engine

K. RAJKUMAR, P. GOVINDARAJAN

Frontiers in Energy 2011, Volume 5, Issue 4,   Pages 398-403 doi: 10.1007/s11708-011-0157-7

Abstract: These effects have the potential to increase the thermal efficiency and specific power output of a dieselAssessed high combustion temperature from the oxygen enriched combustion leads to high combustion efficiencyconducted in the above said engine for different loads and the following performance characteristics like brakepower (BP), specific fuel consumption (SFC), mean effective pressure, brake thermal efficiency, mechanicalefficiency, and exhaust gas temperature were studied.

Keywords： oxygen enriched combustion     exhaust gas temperature     brake power (BP)     specific fuel consumption (SFC)    

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Evaluating R&D efficiency of China’s listed lithium battery enterprises

Frontiers of Engineering Management   Pages 473-485 doi: 10.1007/s42524-022-0213-5

Abstract: To guide future policies and understand proper ways of promoting R&D efficiency, we looked into the lithiumResults revealed little indication of a meaningful improvement in R&D efficiency throughout our samplewas 0.442, whereas the average pure technical efficiency was at 0.503, thus suggesting that they wereIn contrast, the performance of the five leading players seemed superior because their average efficiencyMoreover, they were experiencing increasing scale efficiency (IRS).

Keywords： Data Envelopment Analysis     R&D investment efficiency     China’s listed lithium battery enterprises     technicalefficiency     pure technical efficiency     scale efficiency    

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Title Author Date Type Operation

Performance, emission and combustion characteristics of CI engine fuelled with diesel and hydrogen

R. Senthil KUMAR,M. LOGANATHAN,E. James GUNASEKARAN

Journal Article

Coupling evaluation for material removal and thermal control on precision milling machine tools

Journal Article

Real-time monitoring of brake shoe keys in freight cars

Rong ZOU,Zhen-ying XU,Jin-yang LI,Fu-qiang ZHOU

Journal Article

Wear mechanism of disc-brake block material for new type of drilling rig

WANG Xinhua, WANG Simin, ZHANG Siwei, WANG Deguo

Journal Article

Optimization of the power, efficiency and ecological function for an air-standard irreversible Dual-Miller

Zhixiang WU, Lingen CHEN, Yanlin GE, Fengrui SUN

Journal Article

distribution of modulated multi-pulse injection modes based diesel HCCI combustion and their effects on engine thermalefficiency and emissions

LIU Bin, SU Wanhua, WANG Hui, HUANG Haozhong

Journal Article

Thermal and energy analysis of a Chinese kang

Zhi ZHUANG, Yuguo LI, Xudong YANG, Bin CHEN, Jiaping LIU,

Journal Article

Transient analysis of thermoelastic contact problem of disk brakes

Ali BELHOCINE, Mostefa BOUCHETARA

Journal Article

Peroxyacetyl nitrate measurements by thermal dissociation–chemical ionization mass spectrometry in an

Xinfeng Wang, Tao Wang, Likun Xue, Wei Nie, Zheng Xu, Steven C. N. Poon, Wenxing Wang

Journal Article

Experimental study of heat transfer coefficient with rectangular baffle fin of solar air heater

Foued CHABANE,Nesrine HATRAF,Noureddine MOUMMI

Journal Article

A High-Efficiency Two-Stroke Engine Concept: The Boosted Uniflow Scavenged Direct-Injection Gasoline

Xinyan Wang, Hua Zhao

Journal Article

Three-dimensional electromagnetic analysis and design of permanent magnet retarder

Lezhi YE, Desheng LI, Bingfeng JIAO

Journal Article

The effect of different agricultural management practices on irrigation efficiency, water use efficiency

La ZHUO, Arjen Y. HOEKSTRA

Journal Article

Impact of oxygen enriched combustion on the performance of a single cylinder diesel engine

K. RAJKUMAR, P. GOVINDARAJAN

Journal Article

Evaluating R&D efficiency of China’s listed lithium battery enterprises

Journal Article