Performance and Emissions Characteristics of a Spark Ignition Engine Fueled with Dissociated and Steam-Reformed Methanol

McCall, David M; Lalk, T. R.; Davison, R. R.; Harris, Wesley R.

doi:10.4271/852106

Cited by 9 publications

(6 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The engine was fumigated with both industrial grade ethanol and methanol and complete performance and emission data (excluding aldehydes) were measured. McCall et al (1985) concluded that an automobile could not be operated solely on dissociated or steam reformed methanol over the entire required power range and that the use of reformed methanol, compared with liquid methanol, may result in a small improvement in thermal efficiency although dissociated methanol is a better fuel than steam reformed methanol for use in spark ignition engine. Also, they found that the use of dissociated or steam reformed methanol may result in lower exhaust emissions compared with liquid methanol.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation on Varying the Compression Ratio of Si Engine Working Under Different Ethanol-Gasoline Fuel Blends

Abdel‐Rahman

Osman

1997

Int. J. Energy Res.

101

View full text Add to dashboard Cite

SUMMARYUsing different ethanol-gasoline fuel blends, a VARICOMP engine was used to study the effect of varying the compression ratio on SI engine performance. The performance tests were carried out using different percentages of ethanol in gasoline fuel, up to 40%, under variable compression ratio conditions. The results show that the engine indicated power improves with the percentage addition of the ethanol in the fuel blend. The maximum improvement occurs at 10% ethanol-90% gasoline fuel blend.

show abstract

Section: Introductionmentioning

confidence: 99%

Experimental Investigation on Varying the Compression Ratio of Si Engine Working Under Different Ethanol-Gasoline Fuel Blends

Abdel‐Rahman

Osman

1997

Int. J. Energy Res.

101

View full text Add to dashboard Cite

show abstract

“…In the second fuel system, there is a switch back to liquid methanol for operation at full load, ensuring that maximum power can still be met. Prior to Kowalewicz, McCall and co-workers [238] presented test results using simulated mixtures of gases for both dissociated and steam reformed cases; they showed relative improvements of the order of 30% at light load, showing that there is clearly an effect beyond the increase in LHV. In the 1980s Volkswagen AG also heavily investigated methanol as a transport fuel as part of a German government initiative [239], and within this König et al [240] reported results for dissociated gases using a reformer in the exhaust gas stream in which a copper catalyst was used.…”

Section: Fuel Reforming Using Engine Waste Heatmentioning

confidence: 99%

Methanol as a fuel for internal combustion engines

Verhelst

Turner

Sileghem

et al. 2019

Progress in Energy and Combustion Science

776

208

View full text Add to dashboard Cite

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

show abstract

“…It is thus certain that fuelling an engine with hydrogenrich gases produced from methanol operated in the lean-burn condition is an effective means of achieving high-efficiency combustion of methanol. 27 For most fuels, the brake thermal efficiency is a maximum at slightly leaner than stoichiometric equivalence ratios, and operation at very lean equivalence ratios results in a decrease in the thermal efficiency. The following factors resulted in the improvement in the engine economy: the throttle loss is minimized in a lean-burn operation for a specific power output, because an increase in the excess air ratio means an increase in the pressure of the inlet pipe; correspondingly, a decrease in the pumping work results from rapidly pumping the throttled mixture into the engine.…”

Section: Fuel Economymentioning

confidence: 99%

Research on the performance of an electronically controlled spark ignition engine fuelled with hydrogen-rich gases

Yao

Xucong

Zang

et al. 2014

Proceedings of the Institution of Mechanical Engineers, Part D:

View full text Add to dashboard Cite

Because of the storage and safety of hydrogen on board vehicles, there still exist many problems; this paper introduces a system of hydrogen-rich gases and its application to an electronically controlled spark ignition engine. The hydrogen-rich gases from the designed reformer are produced by methanol dissociated by the heat recycled from the exhaust emissions of an engine. The effects of the hydrogen-rich gases on the performances of the engine were investigated for lean-burning operations. The test results indicate that the engine can operate using a very lean fuel mixture owing to the wide ignition limits of the hydrogen-rich gases. When the excessive air-to-fuel ratio is higher than 1.4, the nitrogen oxide emissions are reduced by 90%, the carbon monoxide emissions are ultra-low, and the hydrocarbon emissions are at nearly the same level as those produced from a gasoline engine. In addition, while maintaining the power output of the engine, lean burning of the hydrogen-rich gases and partial recycling of the exhaust heat significantly improve the brake thermal efficiency of methanol.

show abstract

Performance and Emissions Characteristics of a Spark Ignition Engine Fueled with Dissociated and Steam-Reformed Methanol

Cited by 9 publications

References 7 publications

Experimental Investigation on Varying the Compression Ratio of Si Engine Working Under Different Ethanol-Gasoline Fuel Blends

Experimental Investigation on Varying the Compression Ratio of Si Engine Working Under Different Ethanol-Gasoline Fuel Blends

Methanol as a fuel for internal combustion engines

Research on the performance of an electronically controlled spark ignition engine fuelled with hydrogen-rich gases

Contact Info

Product

Resources

About