Can propulsion and fuel diversity for the bus fleet achieve the win–win strategy of energy conservation and environmental protection?

Wang, Renjie; Wu, Ye; Ke, Wenwei; Zhang, Shaojun; Zhou, Boya; Hao, Jiming

doi:10.1016/j.apenergy.2015.01.107

Cited by 80 publications

(46 citation statements)

References 49 publications

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“…The focus is on the emissions, while the role of various stakeholders in promoting alternative fuels isn't discussed in detail. R. Wang et al (2015) simulate emissions, energy efficiency and fuel consumption for bus fleets in the three most developed Chinese regions. Their study points out the importance of diversifying the fuel mix at regional level for achieving simultaneous energy savings and emissions reduction.…”

Section: Literature Review and Analytical Approachmentioning

confidence: 99%

On the road to fossil-free public transport: The case of Swedish bus fleets

Xylia

Silveira

2017

Energy Policy

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Public transport is important for Sweden to acquire a fossil-fuel independent vehicle fleet by 2030. The aim of this paper is to assess the status of Swedish public bus fleets towards decarbonization, and explore factors affecting regional performance variations and fuel choices. Environmental performance indicators such as renewable fuel shares, CO 2 emissions, and energy efficiency are analyzed nationally and regionally. Fuel preferences and best practices are investigated through a survey and interviews with experts working with strategic planning at Public Transport Authorities. Almost 60% of the bus transport volume ran on renewables in 2014 compared to 8% in 2007, but regional variations are significant, partly due to factors such as driving conditions, bus and fuel types, typical trip lengths, and climatic conditions. However, there is no strong correlation between population densities or bus transport volume and the share of renewables achieved. This places political will, strategic planning and policies to promote public transport as key factors affecting renewable fuel deployment. Environmental factors are a priority when choosing fuels, while barriers to renewable fuels are mainly economic and political. Meanwhile, despite the overall progress, achievements in energy efficiency improvement are falling short in comparison to emissions reduction and adoption of renewable fuels, thus requiring further attention.  Electricity is likely to receive increased attention according to expert survey. Highlights

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Section: Literature Review and Analytical Approachmentioning

confidence: 99%

On the road to fossil-free public transport: The case of Swedish bus fleets

Xylia

Silveira

2017

Energy Policy

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“…Hybrid-buses present lower life-cycle GHG emissions than NG-buses. However, the LCG from electric-buses are higher than those from NG-buses because of the high proportion of coal power in China's power grid (Wang et al 2015). This finding indicates that the decrease in GHG emissions offered by hybrid buses is counteracted by increased GHG emissions from electric bus.…”

Section: Urban Public Transport Vehicle Sectormentioning

confidence: 91%

“…In addition to driving conditions, the thermal efficiency of vehicle engines has a fundamental impact on GHG emissions. Numerous articles have discussed the efficiency of buses and taxis, including those fitted with gas engines (Tarroja et al 2015;Wegrzyn et al 1999;Chandler et al 2000;Beer et al 2002;Graham et al 2008;Nijboer 2010;Ou et al 2010;Karakurt et al 2011;Zhang et al 2014;Wang et al 2015;Jaffe et al 2015). Table 4 summarizes the fuel consumption rate and provides GHG estimates for buses and taxis.…”

Section: Urban Public Transport Vehicle Sectormentioning

confidence: 97%

“…A large number of studies have investigated for individual sectors how gas engines could decrease GHG emissions compared with those produced from conventional fossil fuels (Chandler et al 2000;Beer et al 2002;Hekkert et al 2005;Einang 2007;Graham et al 2008;Nijboer 2010;Ou et al 2010;Karakurt et al 2011;Hao et al 2011;Andress et al 2011;Bengtsson et al 2011;Sánchez et al 2012;Zhang et al 2014;Alam and Hatzopoulou 2014;Wang et al 2015;Jaffe et al 2015;Manns et al 2015). With the exception of Karakurt et al (2011), who studied the use of ventilation air methane (VAM), and Bengtsson et al (2011) andEinang (2007), who examined gas as a fuel for ships' engines, most of the articles focus on employing gas engines in road vehicles.…”

Section: Introductionmentioning

confidence: 98%

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Increasing the application of gas engines to decrease China’s GHG emissions

Feng

Zhai

Chen

et al. 2016

Mitig Adapt Strateg Glob Change

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This paper employs a review of the technical literature to estimate the potential decrease in greenhouse gas (GHG) emissions that could be achieved by increasing the application of gas engines in China in three sectors: urban public transport vehicle; shipping; and thermal power plants. China's gas engine development strategies and three types of gas resource are discussed in the study, which indicates that gas engines could decrease GHG emissions by 520 megatonnes (Mt) of carbon dioxide equivalent (CO 2e ) by 2020. This would account for 9.7 % of the government's target for decreasing GHG emissions and is dominated by methane recovery from the use of coal mine gas (CMG) and landfill gas (LFG) for power generation. In the public urban transport vehicle and shipping sectors the low price of natural gas and the increasing demand for the control of harmful emissions could spur the rapid uptake of gas engine vehicles. However, the development of CMG-and LFG-fuelled power plants has been limited by the unwillingness of local enterprises to invest in high-performance gas engine generators and the associated infrastructure. Therefore, further compulsory policies that promote CMG use and LFG recovery should be implemented. Moreover, strict regulations on limiting methane leakage during the production and distribution of gas fuels are urgently needed in China to prevent leakage causing GHG emissions and largely negating the climate benefits of fuel substitution. Strategies for increasing the application of gas engines, promoting gas resources and recovering methane in China are instrumental in global GHG mitigation strategies.

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“…Due to the data presented in [14], any significant reduction of the impact of city public transport on the environment can only be achieved by applying alternative drive systems. Battery Electric Vehicle (BEV), may have different emission and energy advantages [15]. Electric vehicles are much more environmentally friendly, as their engines consume less energy, have greater efficiency as well as use the phenomenon of energy recovery [16].…”

Section: Introductionmentioning

confidence: 99%

Urban Public Transport With the Use of Electric Buses – Development Tendencies

et al. 2017

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Summary. The programing documents of the European Union determine the direction of transport systems development, including large cities and agglomerations. The context of these actions which aim to transform into ecologically clean and sustainable transport system is a significant reduction of greenhouse gas emissions. Assuming that public transport will significantly reduce the use of combustion-powered buses, studies on urban logistic enabling the use of electric buses for public transport are needed. The article presents the variants and scenarios for electric buses implementation in urban public transport, as well as the decision algorithm to support electric bus implementation based on technological, organisational, economic and ecological variables. TRANSPORT PUBLICZNY W AGLOMERACJACH Z WYKORZYSTANIEM AUTOBUSU ELEKTRYCZNEGO -TENDENCJE ROZWOJUStreszczenie. Dokumenty programowe Unii Europejskiej wytyczają kierunki rozwoju systemu transportowego także w dużych miastach i aglomeracjach. Kontekstem tych działań, mających na celu przemianę systemu transportowego w transport ekologiczny i zrównoważony, jest znaczące ograniczanie emisji gazów cieplarnianych. Zakładając, że w transporcie publicznym nastąpi znaczne ograniczenie wykorzystania autobusów z napędem spalinowym, niezbędne są badania nad logistyką miejską, umożliwiające wykorzystanie autobusów elektrycznych do transportu publicznego. W artykule przedstawiono warianty i scenariusze wdrażania autobusów elektrycznych w publicznym transporcie zbiorowym oraz zaprezentowano algorytm wsparcia decyzji na podstawie zmiennych technicznych, organizacyjnych, ekonomicznych i ekologicznych.

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Can propulsion and fuel diversity for the bus fleet achieve the win–win strategy of energy conservation and environmental protection?

Cited by 80 publications

References 49 publications

On the road to fossil-free public transport: The case of Swedish bus fleets

On the road to fossil-free public transport: The case of Swedish bus fleets

Increasing the application of gas engines to decrease China’s GHG emissions

Urban Public Transport With the Use of Electric Buses – Development Tendencies

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