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Title: Single cylinder spark ignition engine study of the octane, emissions, and fuel economy characteristics of methanol--gasoline blends

Abstract

A two phase test program was carried out on a single cylinder, fuel research engine (CFR) to determine the octane, emissions, and fuel economy characteristics of methanol-gasoline blends. The first phase of the work was an evaluation of the octane characteristics of methanol blended with unleaded gasoline. Blends ranging from 2% to 100% by volume methanol for four different base gasolines were knock rated. A simplified mathematical model of the results was developed to aid in comparing the effects of methanol on the octane ratings of the various base fuels. The results indicate that methanol can substantially increase both the Research and Motor Ratings of a relatively low octane unleaded gasoline. The second phase of the test program was an evaluation of the emissions and fuel economy of a 10% by volume blend of methanol with two base fuels in the single cylinder engine. Clear Indolene and a 95 RON commercial gasoline were used for these tests. The results for the Indolene blend are presented since both fuels behaved in a similar manner. Where differences did exist appropriate comments are included. General conclusions were that a blend of 10% methanol and gasoline demonstrated no significant change in the emissions ormore » energy efficiency over the gasoline fueled engine when operated at equivalent conditions. Under some operating conditions, the addition of methanol could increase the octane rating of the base fuel. This increase could conceivably be enough to reduce knock problems in some vehicles.« less

Authors:
;
Publication Date:
OSTI Identifier:
7278977
Report Number(s):
CONF-750264-2
Resource Type:
Conference
Resource Relation:
Conference: Automotive engineering congress and exposition, Detroit, Michigan, USA, 24 Feb 1975
Country of Publication:
United States
Language:
English
Subject:
33 ADVANCED PROPULSION SYSTEMS; 10 SYNTHETIC FUELS; AUTOMOTIVE FUELS; ANTIKNOCK RATINGS; COMBUSTION PRODUCTS; METHANOL; USES; SPARK IGNITION ENGINES; EXHAUST GASES; FUEL ECONOMY; CARBON MONOXIDE; GASOLINE; HYDROCARBONS; MATHEMATICAL MODELS; MIXTURES; NITROGEN OXIDES; PERFORMANCE TESTING; ALCOHOLS; CARBON COMPOUNDS; CARBON OXIDES; CHALCOGENIDES; DISPERSIONS; ENGINES; FUELS; GASEOUS WASTES; HYDROXY COMPOUNDS; INTERNAL COMBUSTION ENGINES; NITROGEN COMPOUNDS; ORGANIC COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; PETROLEUM PRODUCTS; TESTING; WASTES; 330800* - Emission Control- Alternative Fuels; 330701 - Emission Control- Nitrogen Oxides; 330702 - Emission Control- Carbon Monoxide; 330704 - Emission Control- Hydrocarbons; 090100 - Hydrocarbon Fuels- (-1989)

Citation Formats

Johnson, R T, and Riley, R K. Single cylinder spark ignition engine study of the octane, emissions, and fuel economy characteristics of methanol--gasoline blends. United States: N. p., 1976. Web.
Johnson, R T, & Riley, R K. Single cylinder spark ignition engine study of the octane, emissions, and fuel economy characteristics of methanol--gasoline blends. United States.
Johnson, R T, and Riley, R K. Thu . "Single cylinder spark ignition engine study of the octane, emissions, and fuel economy characteristics of methanol--gasoline blends". United States.
@article{osti_7278977,
title = {Single cylinder spark ignition engine study of the octane, emissions, and fuel economy characteristics of methanol--gasoline blends},
author = {Johnson, R T and Riley, R K},
abstractNote = {A two phase test program was carried out on a single cylinder, fuel research engine (CFR) to determine the octane, emissions, and fuel economy characteristics of methanol-gasoline blends. The first phase of the work was an evaluation of the octane characteristics of methanol blended with unleaded gasoline. Blends ranging from 2% to 100% by volume methanol for four different base gasolines were knock rated. A simplified mathematical model of the results was developed to aid in comparing the effects of methanol on the octane ratings of the various base fuels. The results indicate that methanol can substantially increase both the Research and Motor Ratings of a relatively low octane unleaded gasoline. The second phase of the test program was an evaluation of the emissions and fuel economy of a 10% by volume blend of methanol with two base fuels in the single cylinder engine. Clear Indolene and a 95 RON commercial gasoline were used for these tests. The results for the Indolene blend are presented since both fuels behaved in a similar manner. Where differences did exist appropriate comments are included. General conclusions were that a blend of 10% methanol and gasoline demonstrated no significant change in the emissions or energy efficiency over the gasoline fueled engine when operated at equivalent conditions. Under some operating conditions, the addition of methanol could increase the octane rating of the base fuel. This increase could conceivably be enough to reduce knock problems in some vehicles.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1976},
month = {1}
}

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