Comparison of real-world vehicle fuel use and tailpipe emissions for gasoline-ethanol fuel blends

Yuan, Wenqiao; Frey, H. Christopher; Wei, Tongchuan; Rastogi, Nikhil; VanderGriend, Steven; Miller, D. J.; Mattison, Lawrence

doi:10.1016/j.fuel.2019.03.115

Cited by 54 publications

(12 citation statements)

References 42 publications

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“…Meanwhile, hazardous emissions from vehicles are partly responsible for environmental pollution. 1,2 All kinds of measures have been taken to decrease fuel consumption and exhaust emissions, such as homogeneous charge compression ignition (HCCI), 3 variable valve timing, 4 thermal management, 5–7 high-efficiency aftertreatment, 8–10 alternative fuel, 11,12 model predictive control (MPC), 13 light materials 14 and low rolling resistance tyres. 15 These technologies are aimed at improving engine thermal efficiency, decreasing energy loss, dropping the formation of exhaust pollutants and enhancing catalyst efficiency, from technical points.…”

Section: Introductionmentioning

confidence: 99%

Analysis of driving behaviours of truck drivers using motorway tests

Gao

Chen

Dave

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part D:

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Road transportations still play a dominant role in goods delivery, and driving behaviours significantly affect the fuel economy of heavy-duty trucks. Plenty of fossil fuel is wasted as a result of unreasonable driving behaviours even in the case of highly experienced drivers. The objective of this paper is to analyse drivers’ behaviours over two segments of motorways and estimate the potential benefits of fuel saving caused by a change in driving habits during national and international goods delivery. Drivers’ habits on motorways change depending on the road situations. In the acceleration process, the fuel consumption rates are huge even under low-speed conditions. The truck fuel consumption rates are exaggerated by positive road slopes, but still dominated by acceleration. Accelerations are generally in normal distributions, with the median value being approximately 0.5 m/s2. The speed ranges corresponding to each gear enlarge with the increase in gear number. The potentials of annual fuel saving for parts of European Union countries are nearly 2 × 106 m3 by adopting proper driving behaviours.

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Section: Introductionmentioning

confidence: 99%

Analysis of driving behaviours of truck drivers using motorway tests

Gao

Chen

Dave

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part D:

View full text Add to dashboard Cite

show abstract

“…The same findings were accounted for by Yuan et al [6], who performed tests on five different vehicles: one flexible-fuel vehicle (FFV) and four non-flexible-fuel vehicles (non-FFV). The vehicles were all light vehicles, and the purpose of the study was to determine whether the non-FFV vehicles could adapt to mid-level blends.…”

Section: Introductionmentioning

confidence: 52%

Fuel Consumption and Emissions Analysis of a Light Vehicle Fuelled with Two Ethanol–Gasoline Blends in Urban Driving Conditions of Lima Metropolitana

Rondón

Aliaga

Cuisano

2021

WEVJ

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We present a comparative study of fuel consumption, emissions factors, and vehicle-specific power of a light vehicle operating with two gasoline–ethanol blends as fuel: commercial gasohol (E7.8) and an alternative mix with 10% v/v of ethanol (E10). For this purpose, a vehicle in the city’s fleet was equipped with a central system of data acquisition, whose main function was to capture second-by-second data of the air intake of the engine, the emissions concentration levels in the exhaust, the distance traveled, vehicle speed, and environmental conditions during testing. The measuring campaign was carried out in the city of Lima Metropolitana. Fuel consumption was calculated indirectly, using air intake measurements. The vehicle’s engine emissions were analysed using the mass flow rates of CO2, CO, HC, and NOx, as well as the vehicle-specific power. The results show that, in traffic conditions, the change in fuels does not affect the consumption. On the other hand, a correlation was found between the vehicle-specific power and the emissions mass flow. During the comparison between fuels, the results showed an increase in the mass flow standard deviation when using E10.

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“…Due to stringent emission standards, it is more important to consider the behaviour of unregulated emissions for FFE with ethanol blends other than regulated emissions. As discussed in Section 6, unregulated emissions like aldehydes, saturated hydrocarbons, OFP, ammonia, and unburned ethanol increase with ethanol share in FFEs 209‐211 . Consequently, these unregulated emissions cause severe health issues for human beings and environmental pollutions even though the quantity of these emissions is relatively less in the exhaust when the FFE is fuelled by ethanol blends 212,213 .…”

Section: Challenges Associated With Ethanol As a Fuel In Flex‐fuel En...mentioning

confidence: 99%

Critical review on recent progress of ethanol fuelled flex‐fuel engine characteristics

Azhaganathan

Ashok

2022

Intl J of Energy Research

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Summary Ethanol‐powered spark ignition (SI) engines have the potential to mitigate the twin crisis of fossil fuel depletion and exhaust emissions. However, the successful promotion of ethanol is hindered due to the restriction of fuel blend diversity and design features in the conventional SI engine. The fuel flexibility can be overcome by the use of flex‐fuel engine (FFE) technology with appropriate changes in engine design features for a wide range of ethanol blends. The understanding of FFE based on various technical aspects has greater potential in the automotive sector. Therefore, this review paper provides a holistic approach to critically analyze the various technical aspects of FFE. In this work, the application of ethanol blends on FFE output characteristics is reviewed critically considering the effects of engine operating conditions and parameters. Further, the impact of ethanol blends on material compatibility, cold starting characteristics, and unregulated emissions are analyzed. The outcome of the study shows that combustion and performance characteristics such as cylinder pressure(CP), heat release rate (HRR), and brake thermal efficiency (BTE) are improved in FFE operation due to the clean‐burning characteristics of ethanol blends. Also, carbon monoxide(CO) and hydrocarbon (HC) emissions decreased without any significant improvement in nitrogen oxides (NOx) emissions with a wide range of ethanol shares in FFE. Finally, this study summarizes the present status of research in FFE and creates a route towards the direction of multidisciplinary research need in the future that supports the application of different types of biofuels in FFE.

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Comparison of real-world vehicle fuel use and tailpipe emissions for gasoline-ethanol fuel blends

Cited by 54 publications

References 42 publications

Analysis of driving behaviours of truck drivers using motorway tests

Analysis of driving behaviours of truck drivers using motorway tests

Fuel Consumption and Emissions Analysis of a Light Vehicle Fuelled with Two Ethanol–Gasoline Blends in Urban Driving Conditions of Lima Metropolitana

Critical review on recent progress of ethanol fuelled flex‐fuel engine characteristics

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