Greenhouse gas emissions from heavy-duty natural gas, hybrid, and conventional diesel on-road trucks during freight transport

Quiros, David; Smith, Jamie; Thiruvengadam, Arvind; Huai, Tao; Hu, Shaohua

doi:10.1016/j.atmosenv.2017.08.066

Cited by 105 publications

(54 citation statements)

References 15 publications

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“…The hybrid powertrain leads to lower CO 2 emissions particularly for low speed routes [21,22]. Investment in hybrid technology may therefore be pursued as an effective means to decrease the carbon footprint of transport in cities [23].…”

Section: Introductionmentioning

confidence: 99%

Real-World Measurement of Hybrid Buses’ Fuel Consumption and Pollutant Emissions in a Metropolitan Urban Road Network

et al. 2018

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This study investigates pollutant emissions and fuel consumption of six Euro VI hybrid-diesel public transport buses operating on different scheduled routes in a metropolitan urban road network. Portable emission measurement systems (PEMS) are used in measurements and results are compared to those obtained from a paired number of Euro V conventional buses of the same body type used as control over the same routes. The selected routes vary from urban to highway driving and the experimentation was conducted over the first half of 2015. The available emissions data correspond to a wide range of driving, operating, and ambient conditions. Fuel consumption, distance- and energy-based emission levels are derived and presented in a comparative manner. The effect of different factors, including speed, ambient temperature, and road grade on fuel consumption and emissions performance is investigated. Mean fuel consumption of hybrid buses was found 6.1% lower than conventional ones, from 20% lower up to 16% higher, over six routes tested in total. The mean route difference between the two technologies was not statistically significant. Air conditioning decreased consumption benefits of the hybrid buses. Decrease of the mean route speed from 15 km h−1 tο 8 km h−1 increased the hybrid buses consumption by 63%. Nitrogen oxides (NOx) emissions of the Euro VI hybrid buses were 93 ± 5% lower than conventional Euro V ones. Nitrous oxide (N2O) emissions from hybrid Euro VI buses made up 5.9% of total greenhouse gas emissions and largely offset carbon dioxide (CO2) benefits. The results suggest that hybrid urban buses need to be assessed under realistic operation and environmental conditions to assess their true environmental and fuel consumption benefits.

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Section: Introductionmentioning

confidence: 99%

Real-World Measurement of Hybrid Buses’ Fuel Consumption and Pollutant Emissions in a Metropolitan Urban Road Network

et al. 2018

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“…GHGs emissions in the United States (US) and Canada [12], [126], yet they represent only a minor fraction of on-road vehicles (1% in the US and 1.7% in Canada [12], [127]). HDTs in the European Union (EU) emit more than 30% of the on-road GHG emissions [70].…”

Section: Introductionmentioning

confidence: 99%

“…Sen et al [36] also showed that the life cycle cost of CNG is only slightly better than the baseline diesel. On the other hand, Gao et al [31] and Quiros et al [126] found on-road CO2 emissions reductions up to 15% for CNG, but Quiros et al [126] found that on hilly mountain routes CNG emits 12% more than a comparable diesel. Further, in contrast to Sen et al [36], Gao et al [31] found that CNG had cost savings up to $200,000 over its life time, considering 96,000 km per year usage and city driving conditions.…”

Section: Introductionmentioning

confidence: 99%

Comparing alternative heavy-duty drivetrains based on GHG emissions, ownership and abatement costs: Simulations of freight routes in British Columbia

Lajevardi

Axsen

Crawford

2019

Transportation Research Part D: Transport and Environment

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Heavy-duty trucks (HDTs) are vital in delivering products to the consumers around the world and help maintain the quality of life. However, they are heavily depending on fossil diesel use, which causing global climate change as well as local air pollutions. Although they represent a small percentage of vehicle population, they emit more than 30% of GHGs in road transportation or 5% of global greenhouse gas (GHG) emissions. Furthermore, GHG emissions from this sector are expected to steadily grow due to economic growth, globalization, industrialization, online shopping, and fast delivery expectations. This study was focused on the Canadian province of British Columbia (BC) as a case study where HDTs are responsible for more than 4% of total provincial GHGs. BC, along with many regions around the world, has been committed to reduce its GHG emissions by 80% below 2007 levels by 2050. The goal of this study was to evaluate the potential of meeting this objective for BC HDTs using alternative drivetrain technologies. First, a component-level model was developed in Matlab to compute on-road energy consumption and CO2 emissions of compressed natural gas and diesel HDTs based on their physical parameters (e.g. mass) over several selected drive cycles. Results of the first contribution indicated a compressed natural gas (CNG) drivetrain emits 13-15% fewer GHG than a comparable diesel. Road grades of several main BC routes were included in the drive cycle simulations, which is an important factor that can increase the fuel consumption and CO2 emission by as much as 24% relative to a flat route assumption. In the second contribution, the physical energy consumption model was extended to compare 16 diverse drivetrain technologies, including a pure battery electric. The comparison metrics were also extended to well-to-wheel GHG emissions, total ownership costs (TOC) (including infrastructure), and abatement costs (based on incremental TOC cost over GHG emissions reduction), and cargo capacity impacts. The 16 considered drivetrains were distinguished by their fuel types, combustion technology, drivetrain architecture, and connection to the electricity grid (e.g. catenary vs fast charging stations). Next, the activity data of 1,616 HDTs operating in BC with sparse recording intervals was used to select 6 representative freight routes with different ranges of 120-950 km split into short and long haul routes. A combination of filtering and interpolation techniques was used to develop 1-Hz drive cycles compatible with the level of plug-in hybrid adoption. It was found infrastructure density increases the probability of meeting the 2050 target on both short and long haul HDTs. However, the increase in the probability is much higher for the short haul segment. Among various infrastructure roll-out scenarios, rapid deployment of hydrogen fueling stations was found to have the highest positive impact on GHG emissions reduction for both short and long haul markets. Both battery electric and hydrogen fuel cell drivetrains can succeed in...

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“…The projects related to the conversion of haulage trucks to dual (gas-diesel) fuel operation using liquefied natural gas as a motor fuel are the most widespread. This is due to the fact that liquefied natural gas seems to be the most promising alternative to petroleum-based motor fuels, as evidenced by several studies in this area [7][8][9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Development of Technical Requirements for On-Board Cryogenic Fuel Systems of Belaz Dump Trucks

Dubov

Trukhmanov

Nokhrin³

et al. 2019

MATEC Web Conf.

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The state-of-the-art of the issue of the efficiency and relevance of the use of liquefied natural gas (LNG) as a motor fuel in the operation of dump trucks is considered. An analysis of the benefits of using LNG as a motor fuel is given. It is noted that, LNG seems to be the most promising alternative to oil types of motor fuel in the segment of open-pit truck haulage. It is affirmed that in Russia, in Kuzbass, the group of companies successfully implemented for the first time an integrated project for the production of LNG and its consumption in relation to BelAZ dump trucks. Data on the relevance and the need to develop technical requirements for on-board cryogenic fuel systems of mine dump trucks are given. Data on the developed groups of technical requirements for on-board cryogenic fuel systems of BelAZ dump trucks are given. It is said that the developed technical requirements made it possible to solve a number of tasks related to the development of circuit and design solutions for equipping BelAZ dump trucks with cryogenic systems. It is argued that the developed technical requirements will contribute to the further development of domestic projects for the production and consumption of liquefied natural gas.

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Greenhouse gas emissions from heavy-duty natural gas, hybrid, and conventional diesel on-road trucks during freight transport

Cited by 105 publications

References 15 publications

Real-World Measurement of Hybrid Buses’ Fuel Consumption and Pollutant Emissions in a Metropolitan Urban Road Network

Real-World Measurement of Hybrid Buses’ Fuel Consumption and Pollutant Emissions in a Metropolitan Urban Road Network

Comparing alternative heavy-duty drivetrains based on GHG emissions, ownership and abatement costs: Simulations of freight routes in British Columbia

Development of Technical Requirements for On-Board Cryogenic Fuel Systems of Belaz Dump Trucks

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