The Impact of Gasoline Octane on Fuel Economy in Modern Vehicles

Beck, Christopher M.; Stevenson, Paul A.; Ziman, Pauline

doi:10.4271/2006-01-3407

Cited by 15 publications

(3 citation statements)

References 2 publications

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“…Some previous studies have also shown that octane number can impact fuel economy/engine efficiency, and the octane number for fuel A was slightly higher than for fuel B. These studies have generally been for much larger differences in the octane number or in fuel type (e.g., with and without ethanol), however, and the effects are very dependent on the driving condition and the specific vehicle [39][40][41][42].…”

Section: Co 2 Emissions and Fuel Economymentioning

confidence: 95%

Impact of olefin content on criteria and toxic emissions from modern gasoline vehicles

Hajbabaei

Karavalakis

Miller

et al. 2013

Fuel

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h i g h l i g h t s " Changing the olefin content had a minor impact on exhaust emissions. " Fuel olefin content had no statistically significant effect on NO x , THC, NMHC, and CO emissions. " Some fuel effects were observed for fuel economy and CO 2 emissions. " 1,3-Butadiene emissions increased with increasing fuel olefin content. " Benzene, formaldehyde, and acetaldehyde did not show statistically significant fuel effects.

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Section: Co 2 Emissions and Fuel Economymentioning

confidence: 95%

Impact of olefin content on criteria and toxic emissions from modern gasoline vehicles

Hajbabaei

Karavalakis

Miller

et al. 2013

Fuel

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show abstract

“…Once more, three sets of tests were carried out for repeatability. Each fuel was tested over three consecutive days; however, the test order was varied each day in order to minimize the effect of engine drift, as recommended by leading engine researchers [39]. Error bars have been used where applicable in order to highlight such variations.…”

Section: Spark Advancementioning

confidence: 99%

Ignition timing sensitivities of oxygenated biofuels compared to gasoline in a direct-injection SI engine

Daniel

Tian

et al. 2012

Fuel

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“…where S is sensitivity and RON and MON are the octane numbers defined in the relevant tests. Both a high RON and a high sensitivity have been shown to be directionally important with regards to the present evolution of SI engines towards 'beyond RON' operation [71,72,73,74,75]. The high sensitivity is due to a combination of effects, but mainly that of the heat of vaporization.…”

Section: Physical and Chemical Properties Of Methanol Relevant To Engmentioning

confidence: 99%

Methanol as a fuel for internal combustion engines

Verhelst

Turner

Sileghem

et al. 2019

Progress in Energy and Combustion Science

729

208

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Transportation of people and goods largely relies on the use of fossil hydrocarbons, contributing to global warming and problems with local air quality. There are a number of alternatives to fossil fuels that can avoid a net carbon emission and can also decrease pollutant emissions. However, many have significant difficulty in competing with fossil fuels due to either limited availability, limited energy density, high cost, or a combination of these. Methanol (CH 3 OH) is one of these alternatives, which was demonstrated in large fleet trials during the 1980s and 1990s, and is currently again being introduced in various places and applications. It can be produced from fossil fuels, but also from biomass and from renewable energy sources in carbon capture and utilization schemes. It can be used in pure form or as a blend component, in internal combustion engines (ICEs) or in direct methanol fuel cells (DMFCs). These features added to the fact it is a liquid fuel, making it an efficient way of storing and distributing energy, make it stand out as one of the most attractive scalable alternatives. This review focuses on the use of methanol as a pure fuel or blend component for ICEs. First, we introduce methanol historically, briefly introduce the various methods for its production, and summarize health and safety of using methanol as a fuel. Then, we focus on its use as a fuel for ICEs. The current data on the physical and chemical properties relevant for ICEs are reviewed, highlighting the differences with fuels such as ethanol and gasoline. These are then related to the research reported on the behaviour of methanol and methanol blends in spark ignition and compression ignition engines. Many of the properties of methanol that are significantly different from those of for example gasoline (such as its high heat of vaporization) lead to advantages as well as challenges. Both are extensively discussed. Methanol's performance, in terms of power output, peak and part load efficiency, and emissions formation is summarized, for so-called flex-fuel engines

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The Impact of Gasoline Octane on Fuel Economy in Modern Vehicles

Cited by 15 publications

References 2 publications

Impact of olefin content on criteria and toxic emissions from modern gasoline vehicles

Impact of olefin content on criteria and toxic emissions from modern gasoline vehicles

Ignition timing sensitivities of oxygenated biofuels compared to gasoline in a direct-injection SI engine

Methanol as a fuel for internal combustion engines

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