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Feedback controlled fuel injection system can accommodate any alcohol-gasoline blend

Abstract

A fuel metering system has been adapted and permits operation on all blends of alcohols and gasoline ranging from pure gasoline to pure ethanol and methanol. It is a closed loop electronic feedback controlled fuel injection system (EFI) with exhaust oxygen sensor. The system is used by Toyota Motor Company in their Supra and Cressida models in conjunction with a 3-way catalytic exhaust system. These models meet California exhaust and evaporative emission standards. An unmodified model has been tested on alcohol gasoline blends from pure gasoline to 50% ethanol-50% gasoline and 30% methanol-70% gasoline and found to meet all exhaust and evaporative emissions standards. A Cressida with modified EFI system is currently being tested. It is capable of operating on pure gasoline, pure methanol or ethanol and all intermediate blends. The testing to date shows that the vehicle meets all exhaust emissions standards while operating over the blend range from pure gasoline to pure ethanol while maintaining driveability and energy based fuel economy. The paper will present the total test evidence for all gasoline-alcohol blends. This will include exhaust and evaporative emissions, fuel economy and driveability as determined in accordance with United States Federal Test Procedures. Additionally, the paper will  More>>
Publication Date:
Jan 01, 1980
Product Type:
Conference
Report Number:
CONF-801030-(Vol.1)
Reference Number:
ERA-06-035121; EDB-81-1165598; ERA-07-004585; EDB-82-002885
Resource Relation:
Conference: 4. international symposium on alcohol fuels technology, Sao Paulo, Brazil, 5 Oct 1980; Related Information: In: IV international symposium on alcohol fuels technology.
Subject:
33 ADVANCED PROPULSION SYSTEMS; AUTOMOBILES; FUEL INJECTION SYSTEMS; DESIGN; PERFORMANCE TESTING; EMISSION; ETHANOL FUELS; EXHAUST GASES; EXHAUST RECIRCULATION SYSTEMS; EXPERIMENTAL DATA; FUEL ECONOMY; GASOHOL; GASOLINE; INTERNAL COMBUSTION ENGINES; METHANOL FUELS; ROAD TESTS; ALCOHOL FUELS; DATA; ENGINES; EQUIPMENT; EXHAUST SYSTEMS; FLUIDS; FUEL SYSTEMS; FUELS; GASEOUS WASTES; GASES; HEAT ENGINES; INFORMATION; LIQUID FUELS; NUMERICAL DATA; PETROLEUM PRODUCTS; POLLUTION CONTROL EQUIPMENT; SYNTHETIC FUELS; TESTING; VEHICLES; WASTES; 330800* - Emission Control- Alternative Fuels; 330100 - Internal Combustion Engines; 330700 - Advanced Propulsion Systems- Emission Control
OSTI ID:
8463510
Research Organizations:
Univ. of Santa Clara, CA
Country of Origin:
Brazil
Language:
English
Other Identifying Numbers:
Other: ON: DE81903753
Availability:
NTIS (US Sales Only), PC A21/MF A01.
Submitting Site:
TIC
Size:
Pages: 247-253
Announcement Date:
Mar 15, 2013

Citation Formats

Pefley, R K, Pullman, J B, Suga, T P, and Espinola, S. Feedback controlled fuel injection system can accommodate any alcohol-gasoline blend. Brazil: N. p., 1980. Web.
Pefley, R K, Pullman, J B, Suga, T P, & Espinola, S. Feedback controlled fuel injection system can accommodate any alcohol-gasoline blend. Brazil.
Pefley, R K, Pullman, J B, Suga, T P, and Espinola, S. 1980. "Feedback controlled fuel injection system can accommodate any alcohol-gasoline blend." Brazil.
@misc{etde_8463510,
title = {Feedback controlled fuel injection system can accommodate any alcohol-gasoline blend}
author = {Pefley, R K, Pullman, J B, Suga, T P, and Espinola, S}
abstractNote = {A fuel metering system has been adapted and permits operation on all blends of alcohols and gasoline ranging from pure gasoline to pure ethanol and methanol. It is a closed loop electronic feedback controlled fuel injection system (EFI) with exhaust oxygen sensor. The system is used by Toyota Motor Company in their Supra and Cressida models in conjunction with a 3-way catalytic exhaust system. These models meet California exhaust and evaporative emission standards. An unmodified model has been tested on alcohol gasoline blends from pure gasoline to 50% ethanol-50% gasoline and 30% methanol-70% gasoline and found to meet all exhaust and evaporative emissions standards. A Cressida with modified EFI system is currently being tested. It is capable of operating on pure gasoline, pure methanol or ethanol and all intermediate blends. The testing to date shows that the vehicle meets all exhaust emissions standards while operating over the blend range from pure gasoline to pure ethanol while maintaining driveability and energy based fuel economy. The paper will present the total test evidence for all gasoline-alcohol blends. This will include exhaust and evaporative emissions, fuel economy and driveability as determined in accordance with United States Federal Test Procedures. Additionally, the paper will report experiences accumulated from road operation of the vehicle over a six-month period.}
place = {Brazil}
year = {1980}
month = {Jan}
}