Computerized on-line approach to calculating optimum engine calibrations
Conference
·
OSTI ID:7217001
A current design objective of the automotive engineer is to calibrate the passenger car spark ignited engine for best fuel economy for a given level of exhaust emission performance. The need to achieve the best possible calibrations has motivated the application of mathematical optimization techniques to this problem. A new on-line technique is described in which an engine dynamometer minicomputer, programmed with an optimization algorithm, automatically determines the optimum calibrations for spark advance, air-fuel ratio, and exhaust gas recirculation at fixed speed-load operating points. These points are selected by analysis of measured or simulated performance of the engine in a specified vehicle.
- OSTI ID:
- 7217001
- Report Number(s):
- CONF-770205-54
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
33 ADVANCED PROPULSION SYSTEMS
330101* -- Internal Combustion Engines-- Spark-Ignition
ALGORITHMS
AUTOMOBILES
DYNAMOMETERS
ENGINES
EQUIPMENT
EXHAUST GASES
EXHAUST RECIRCULATION SYSTEMS
EXHAUST SYSTEMS
FUEL ECONOMY
FUEL-AIR RATIO
GASEOUS WASTES
IGNITION
INTERNAL COMBUSTION ENGINES
MATHEMATICAL LOGIC
MEASURING INSTRUMENTS
ON-LINE MEASUREMENT SYSTEMS
ON-LINE SYSTEMS
OPTIMIZATION
POLLUTION CONTROL EQUIPMENT
SPARK IGNITION ENGINES
TIME DEPENDENCE
VEHICLES
WASTES
330101* -- Internal Combustion Engines-- Spark-Ignition
ALGORITHMS
AUTOMOBILES
DYNAMOMETERS
ENGINES
EQUIPMENT
EXHAUST GASES
EXHAUST RECIRCULATION SYSTEMS
EXHAUST SYSTEMS
FUEL ECONOMY
FUEL-AIR RATIO
GASEOUS WASTES
IGNITION
INTERNAL COMBUSTION ENGINES
MATHEMATICAL LOGIC
MEASURING INSTRUMENTS
ON-LINE MEASUREMENT SYSTEMS
ON-LINE SYSTEMS
OPTIMIZATION
POLLUTION CONTROL EQUIPMENT
SPARK IGNITION ENGINES
TIME DEPENDENCE
VEHICLES
WASTES