An evaluation of Transient System Optimization used for spark calibration over the FTP urban schedule
Book
·
OSTI ID:5822573
Transient System Optimization (T.S.O.) was developed as a systematic means to optimize the calibrations of up to three engine control variables -- air-fuel ratio, spark advance and exhaust gas recirculation, to provide the minimum fuel penalty while meeting specified levels of exhaust emissions: HC, CO and NO/sub x/. In this study we evaluated the performance of T.S.O. in optimizing the spark advance calibration on the hot FTP urban schedule. The process was applied to each of the following cases: a mature spark calibration supplied with the vehicle, that calibration retarded by 10 degrees and an MBT calibration. This provided different initial conditions under which to evaluate T.S.O. The results of the study showed that the final calibrations achieved the same fuel economy as the mature calibration with equivalent or lower emisisons: however, the resulting spark advance calibrations were markedly different from each other. The authors have concluded that no unique optimum spark advance calibration exists because tradeoffs among spark table cells permit equivalent fuel economy and emissions for different calibrations.
- OSTI ID:
- 5822573
- Report Number(s):
- SAE-TP-840850
- Country of Publication:
- United States
- Language:
- English
Similar Records
The effect of using 30% iso-butanol-gasoline blend on hydrocarbon emissions from a spark-ignition engine
Computerized on-line approach to calculating optimum engine calibrations
Emissions and fuel economy of a stratified charge engine operating on a gasoline/methanol blend
Journal Article
·
Tue Jun 01 00:00:00 EDT 1999
· Energy Sources
·
OSTI ID:350298
Computerized on-line approach to calculating optimum engine calibrations
Conference
·
Fri Dec 31 23:00:00 EST 1976
·
OSTI ID:7217001
Emissions and fuel economy of a stratified charge engine operating on a gasoline/methanol blend
Technical Report
·
Tue Dec 31 23:00:00 EST 1974
·
OSTI ID:7133975
Related Subjects
33 ADVANCED PROPULSION SYSTEMS
330101* -- Internal Combustion Engines-- Spark-Ignition
500200 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR POLLUTION ABATEMENT
CALIBRATION
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
COMPARATIVE EVALUATIONS
ENGINES
EQUIPMENT
EXHAUST GASES
EXHAUST RECIRCULATION SYSTEMS
EXHAUST SYSTEMS
FEDERAL TEST PROCEDURE
FLUIDS
FUEL ECONOMY
FUEL-AIR RATIO
GASEOUS WASTES
GASES
HEAT ENGINES
HYDROCARBONS
IGNITION QUALITY
INTERNAL COMBUSTION ENGINES
NITROGEN COMPOUNDS
NITROGEN OXIDES
OPTIMIZATION
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
POLLUTION ABATEMENT
POLLUTION CONTROL EQUIPMENT
SPARK IGNITION ENGINES
TRANSIENTS
URBAN AREAS
VEHICLES
WASTES
330101* -- Internal Combustion Engines-- Spark-Ignition
500200 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR POLLUTION ABATEMENT
CALIBRATION
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
COMPARATIVE EVALUATIONS
ENGINES
EQUIPMENT
EXHAUST GASES
EXHAUST RECIRCULATION SYSTEMS
EXHAUST SYSTEMS
FEDERAL TEST PROCEDURE
FLUIDS
FUEL ECONOMY
FUEL-AIR RATIO
GASEOUS WASTES
GASES
HEAT ENGINES
HYDROCARBONS
IGNITION QUALITY
INTERNAL COMBUSTION ENGINES
NITROGEN COMPOUNDS
NITROGEN OXIDES
OPTIMIZATION
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
POLLUTION ABATEMENT
POLLUTION CONTROL EQUIPMENT
SPARK IGNITION ENGINES
TRANSIENTS
URBAN AREAS
VEHICLES
WASTES