Demonstration of Dissociated Methanol as an Automotive Fuel: System Performance

Finegold, J. G.; Karpuk, M.E.; McKinnon, J. Thomas; Passamaneck, R.

doi:10.2172/6470804

Cited by 7 publications

(3 citation statements)

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“…7 The endothermic decomposition of methanol (eq 1) has been demonstrated to produce H 2 -rich syngas as an engine fuel. 8,9 The decomposition products of methanol enable an SI engine to run with an increased compression ratio (14:1), increasing the thermal efficiency. 10 Several patents for generating hydrogen-rich syngas out of methanol to combust the syngas in an automotive engine have been published.…”

Section: Introductionmentioning

confidence: 99%

“…Besides steam reforming, methanol can also be decomposed to syngas for use as a motor fuel in order to reduce automobile emissions . The endothermic decomposition of methanol (eq ) has been demonstrated to produce H 2 -rich syngas as an engine fuel. , The decomposition products of methanol enable an SI engine to run with an increased compression ratio (14:1), increasing the thermal efficiency . Several patents for generating hydrogen-rich syngas out of methanol to combust the syngas in an automotive engine have been published. , CH 3 OH ⇄ CO + 2 normalH 2 goodbreak0em1em⁣ normalΔ H normalr1 ° = 90.36 nobreak0em0.25em⁡ kJ/mol …”

Section: Introductionmentioning

confidence: 99%

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Determination of Syngas Premixed Gasoline and Methanol Combustion Products at Chemical Equilibrium via Lagrange Multipliers Method

Süslü

Becerık

2014

Energy Fuels

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This article investigates theoretically the products from adiabatic combustion of synthesis gas reformed out of aqueous methanol with a variable gasoline−methanol mixture assuming chemical equilibrium. Previous research has generally focused on the combustion of a given fixed fuel composition, whereas in this article the composition of the fuel is varied by three different parameters: the amount of water in the aqueous methanol used as the synthesis gas feedstock, the amount of methanol in the gasoline−methanol mixture, and the ratio of synthesis gas energy to total fuel energy. The effects of these parameters on the adiabatic flame temperature and combustion product distribution are determined. The method used in this article allows the above parameters and the air/fuel ratio parameter to vary in equation sets derived using Lagrange undetermined multipliers in order to determine the combustion temperature and products with a computer solution. Stoichiometric combustion of synthesis gas reformed out of an equimolar water−methanol mixture causes a decrease in the NO ratio by 20% compared with methanol and 40% compared with gasoline under equilibrium conditions, whereas the adiabatic flame temperature decreases by only 50 and 100 K, respectively. Stoichiometric combustion of synthesis gas reformed out of neat methanol causes a higher adiabatic flame temperature and higher NO x emissions than stoichiometric combustion of gasoline or methanol. However, neat-methanolbased synthesis gas has a higher power density and extends the lean flammability limit of the engine more efficiently than aqueous-methanol-based synthesis gas because the reforming enthalpy of neat methanol is higher than that of aqueous methanol. Hydrogen-rich synthesis gas fuels should be combusted with lean air/fuel ratios at part load to increase the thermal efficiency, combustion stability, and control emissions simultaneously. If the road load increases, the engine charge's energy density and motor octane number will be increased by substitution of synthesis gas with liquid fuel while decreasing the air/fuel ratio simultaneously.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Determination of Syngas Premixed Gasoline and Methanol Combustion Products at Chemical Equilibrium via Lagrange Multipliers Method

Süslü

Becerık

2014

Energy Fuels

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“…The possibility of using partially decomposed methanol as a cold start fuel for spark-ignition engines was verified theoretically and experimentally Sjostrom, 1986 and1988a). Finegold et al (1980 and1984) demonstrated the possibilities of utilizing decomposed methanol in a mobile unit. The design, construction and testing of the reactor was done by Voecks et at.…”

Section: Introductionmentioning

confidence: 99%

An Experimental and Theoretical Evaluation of the Onboard Decomposed Methanol Spark-Ignition Engine

Pettersson¹,

̈M²

1990

Combustion Science and Technology

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The possibility of obtaining high efficiency and low emissions of hazardous compounds by using decomposed methanol, i.e., hydrogen and carbon monoxide, as a fuel for spark-ignition engines has been investigated theoretically and experimentally. A cycle simulation predicts that the most important advantage with the system is the opportunity to run the engine on lean air/fuel mixtures.In the experiments, bottled gas was used instead of gas from a decomposition reactor. The results indicate that the efficiency gain, relative to neat methanol, is 15-20% in the torque interval 10-60 Nrn. Detected NO.1 emissions are very low. A control system for the on board decomposed methanol engine has been developed. which uses engine speed as the governing parameter.

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Anwendung — Einsatz von Alkoholkraftstoffen

Menrad

König

1982

Alkoholkraftstoffe

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Demonstration of Dissociated Methanol as an Automotive Fuel: System Performance

Cited by 7 publications

References 0 publications

Determination of Syngas Premixed Gasoline and Methanol Combustion Products at Chemical Equilibrium via Lagrange Multipliers Method

Determination of Syngas Premixed Gasoline and Methanol Combustion Products at Chemical Equilibrium via Lagrange Multipliers Method

An Experimental and Theoretical Evaluation of the Onboard Decomposed Methanol Spark-Ignition Engine

Anwendung — Einsatz von Alkoholkraftstoffen

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