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Experimental study of stratified lean burn characteristics on a dual injection gasoline engine

Chun XIA, Tingyu ZHAO, Junhua FANG, Lei ZHU, Zhen HUANG

Frontiers in Energy 2022, Volume 16, Issue 6,   Pages 900-915 doi: 10.1007/s11708-021-0812-6

Abstract: Lean burn mode could greatly reduce pumping loss and decrease the fuel consumption of gasoline enginesIn this study, dual injection stratified combustion mode is used to accelerate the burning rate of leanIt is shown that the lean burn limit can be extended to Lambda= 1.8 with a low compression ratio of 10There exists a spark window for dual injection stratified lean burn mode, in which the spark timing hasThe dual injection stratified lean burn has a wide range of applications which can effectively reduce

Keywords： dual injection     stratified lean burn     gasoline engine     particulate matter emission     combustion analysis    

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Numerical simulation of charge stratifications to improve combustion and NO formation of lean-burn SI

Zhijun PENG ,

Frontiers in Energy 2009, Volume 3, Issue 3,   Pages 353-358 doi: 10.1007/s11708-009-0035-8

Abstract: The influences of charge stratification on spark ignition (SI) engine combustion and NO emission were analyzed using a phenomenological model. The mixture in the cylinder was divided spherically into three parts: a central core with a stoichiometric air-fuel charge, a dilution region without any combustible charge, and a mixing region lying between the core and the dilution region. Three mixture stratification parameters such as the extent of dilution in the mixing region, the extent of combustible charge in the mixing region, and the gradient of stratification in the mixing region were investigated. The results indicate that the extent of combustible charge in the mixing region could reduce in-cylinder NO formation significantly, compared with the extent of dilution in the mixing region. As long as the degree of dilution in the mixing region is within the dilution limit of the combustible charge, the gradient of dilution has little effect on combustion and NO formation.

Keywords： charge stratification     SI engine     lean-burn combustion     NO emission    

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Progress in developing an innovative lean burn catalytic turbine technology for fugitive methane mitigation

Shi SU, Xinxiang YU

Frontiers in Energy 2011, Volume 5, Issue 2,   Pages 229-235 doi: 10.1007/s11708-011-0147-9

Abstract: utilization of the fugitive mine methane, and then presents research progress in developing an innovative leanburn catalytic turbine technology for fugitive methane mitigation and utilization.

Keywords： coal mine methane     mitigation and utilization     lean burn gas turbine     catalytic combustion    

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Selective catalytic reduction of NOx from exhaust of lean-burn engine over Ag-Al2O3/cordierite catalyst

LI Junhua, KANG Shoufang, FU Lixin, HAO Jiming

Frontiers of Environmental Science & Engineering 2007, Volume 1, Issue 2,   Pages 143-146 doi: 10.1007/s11783-007-0025-1

Abstract: The catalyst performance was tested on a real lean-burn gasoline engine.

Keywords： lean-burn gasoline     external reductant     nitrogen adsorption     conversion     catalyst performance    

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Sequential degradation-based burn-in test with multiple periodic inspections

Frontiers of Engineering Management 2021, Volume 8, Issue 4,   Pages 519-530 doi: 10.1007/s42524-021-0166-0

Abstract: Burn-in has been proven effective in identifying and removing defective products before they are deliveredMost existing burn-in models adopt a one-shot scheme, which may not be sufficient enough for identificationuseful life prediction and accelerated lifetime test, this study proposes a sequential degradation-based burn-inWe cast the problem into a partially observed Markov decision process to minimize the expected total burn-in

Keywords： burn-in     degradation     multiple inspections     Wiener process     partially observed Markov decision process    

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Monocyte subsets and their differentiation tendency after burn injury

Guangqing Wang, Zhaofan Xia

Frontiers of Medicine 2013, Volume 7, Issue 4,   Pages 397-400 doi: 10.1007/s11684-013-0298-7

Abstract: present study may help enhance understanding on the perturbation of the immune system after severe burn

Keywords： monocyte     differentiation     burn    

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Lean Product Development—Faster, Better … Cleaner?

Geert Letens

Frontiers of Engineering Management 2015, Volume 2, Issue 1,   Pages 52-59 doi: 10.15302/J-FEM-2015007

Abstract: To address this challenge, lean product development has emerged to become the leading improvement methodologyWhile lean product development has its origin in the best practice studies of Japanese car manufacturersThe primary purpose of this work is to untangle the fuzziness that still surrounds lean product developmentand to ground the key aspects of lean product development based on insights from six studies publishedThis demonstrates how better and faster product development can be achieved through the integration of lean

Keywords： lean product development     sustainability engineering     responsible design    

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Achievements in burn surgery over the past 50 years in China

WANG Shiliang

Frontiers of Medicine 2008, Volume 2, Issue 4,   Pages 332-336 doi: 10.1007/s11684-008-0063-5

Abstract: This paper reflects on the advancements of clinical and scientific research in the field of burn surgery

Keywords： immunology     scientific     nutritional     microbiology     engineering    

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Seepage failure by heave in sheeted excavation pits constructed in stratified cohesionless soils

Serdar KOLTUK, Jie SONG, Recep IYISAN, Rafig AZZAM

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 6,   Pages 1415-1431 doi: 10.1007/s11709-019-0565-z

Abstract: investigations are performed to clarify the seepage failure by heave in sheeted excavation pits in stratified

Keywords： seepage failure by heave     cohesionless stratified soil     model test     Terzaghi and Peck’s approach     FE analysis    

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Proposing a “lean and green” framework for equipment cost analysis in construction

Ming LU, Nicolas DIAZ, Monjurul HASAN

Frontiers of Engineering Management 2019, Volume 6, Issue 3,   Pages 384-394 doi: 10.1007/s42524-019-0033-4

Abstract: this paper formalizes an integrative framework for equipment cost analysis based on the concepts of lean

Keywords： green construction     lean construction     equipment     simulation     earthwork construction     sustainability     productivity    

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Hotspots Evolution and Frontier Analysis of Lean Construction Research—Integrated Scientometric Analysis

Qing-hua He,Ge Wang

Frontiers of Engineering Management 2015, Volume 2, Issue 2,   Pages 141-147 doi: 10.15302/J-FEM-2015023

Abstract: To develop a lean and green construction industry, Lean Construction (LC) is proposed as a new constructionThree major directions of LC research: greening LC; Building Information Modeling (BIM) based LC; and lean

Keywords： Lean Construction     green industry     efficient use    

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Development and Prospects of Lean-type Swine Breeding

Xiong Yuanzhu

Strategic Study of CAE 2000, Volume 2, Issue 9,   Pages 42-46

Abstract:

In this paper, swine breeding process in the world, especially in China was summarized, including the investigation of native breed resources, importing excellent foreign breeds, selection of new breeds and special lines, cross utilization of special lines, breeding swine testing , etc. The application and achievements of molecular genetics and biotechnology in swine breeding were briefly introduced. The goals of swine breeding in 21st century were discussed, and some suggestion on selection and breeding of new breeds, preservation of swine genetic resources, breeding swine testing system and application of molecular genetics and biotechnology in swine breeding were presented.

Keywords： swine     lean-type     breeding    

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Nitrifying population dynamics in a redox stratified membrane biofilm reactor (RSMBR) for treating ammonium-rich

Rongchang WANG, Xinmin ZHAN, Yalei ZHANG, Jianfu ZHAO

Frontiers of Environmental Science & Engineering 2011, Volume 5, Issue 1,   Pages 48-56 doi: 10.1007/s11783-011-0305-7

Abstract: Nitrogen removal performance and nitrifying population dynamics were investigated in a redox stratifiedConfocal micrographs showed the stratified distributions of nitrifiers and denitrifiers in the membrane

Keywords： ammonium-rich wastewater     membrane biofilm reactor     nitrification     redox stratification     shortcut nitrogen removal    

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Experimental study for the stratified to slug flow regime transition mechanism of gas-oil two-phase flow

LIU Yiping, YANG Weilin, WANG Jing

Frontiers in Energy 2008, Volume 2, Issue 2,   Pages 152-157 doi: 10.1007/s11708-008-0012-7

Abstract: Theoretical relations that predict the transition from a stratified pattern to a slug pattern, includingmodel that contains less empiricism than the commonly used Taitel-Dukler model, and the ideal model for stratifiedphase, as the onset of slugging occurs, were predicted, and theoretical analysis was conducted on the stratified

Keywords： two-phase     Superficial     reasonable prediction     one-dimensional     gas-liquid    

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Blockchain-driven supply chain finance solution for small and medium enterprises

Jian LI, Shichao ZHU, Wen ZHANG, Lean YU

Frontiers of Engineering Management 2020, Volume 7, Issue 4,   Pages 500-511 doi: 10.1007/s42524-020-0124-2

Abstract: Blockchain has attracted much attention in recent years with the development of cryptocurrency and digital assets. As the underlying technology of cryptocurrency, blockchain has numerous benefits, such as de-centralization, collective maintenance, tamper-resistance, traceability, and anonymity. The potential of the blockchain technology (BT) is widely recognized in the financial field. Although some scholars have proposed the combination of blockchain and supply chain finance (SCF), the details of this combination is rarely mentioned. This study first analyzes the coupling between SCF and blockchain technology. Second, the conceptual framework of blockchain-driven SCF platform (BcSCFP) is presented. Third, the operation process of three SCF models on the BcSCFP is proposed. Finally, a case study combined with actual events is conducted. This paper has a positive practical significance in the operation and management of banks and loan enterprises.

Keywords： blockchain technology     supply chain finance     risk management     smart contract     decentralization    

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Title Author Date Type Operation

Experimental study of stratified lean burn characteristics on a dual injection gasoline engine

Chun XIA, Tingyu ZHAO, Junhua FANG, Lei ZHU, Zhen HUANG

Journal Article

Numerical simulation of charge stratifications to improve combustion and NO formation of lean-burn SI

Zhijun PENG ,

Journal Article

Progress in developing an innovative lean burn catalytic turbine technology for fugitive methane mitigation

Shi SU, Xinxiang YU

Journal Article

Selective catalytic reduction of NOx from exhaust of lean-burn engine over Ag-Al2O3/cordierite catalyst

LI Junhua, KANG Shoufang, FU Lixin, HAO Jiming

Journal Article

Sequential degradation-based burn-in test with multiple periodic inspections

Journal Article

Monocyte subsets and their differentiation tendency after burn injury

Guangqing Wang, Zhaofan Xia

Journal Article

Lean Product Development—Faster, Better … Cleaner?

Geert Letens

Journal Article

Achievements in burn surgery over the past 50 years in China

WANG Shiliang

Journal Article

Seepage failure by heave in sheeted excavation pits constructed in stratified cohesionless soils

Serdar KOLTUK, Jie SONG, Recep IYISAN, Rafig AZZAM

Journal Article

Proposing a “lean and green” framework for equipment cost analysis in construction

Ming LU, Nicolas DIAZ, Monjurul HASAN

Journal Article

Hotspots Evolution and Frontier Analysis of Lean Construction Research—Integrated Scientometric Analysis

Qing-hua He,Ge Wang

Journal Article

Development and Prospects of Lean-type Swine Breeding

Xiong Yuanzhu

Journal Article

Nitrifying population dynamics in a redox stratified membrane biofilm reactor (RSMBR) for treating ammonium-rich

Rongchang WANG, Xinmin ZHAN, Yalei ZHANG, Jianfu ZHAO

Journal Article

Experimental study for the stratified to slug flow regime transition mechanism of gas-oil two-phase flow

LIU Yiping, YANG Weilin, WANG Jing

Journal Article

Blockchain-driven supply chain finance solution for small and medium enterprises

Jian LI, Shichao ZHU, Wen ZHANG, Lean YU

Journal Article