Interpretation of engine cycle-to-cycle variation by chaotic time series analysis

Conference · Mon Jan 01 00:00:00 EST 1990

OSTI ID:6769159

Daw, C S; Kahl, W K

In this paper we summarize preliminary results from applying a new mathematical technique -- chaotic time series analysis (CTSA) -- to cylinder pressure data from a spark-ignition (SI) four-stroke engine fueled with both methanol and iso-octane. Our objective is to look for the presence of deterministic chaos'' dynamics in peak pressure variations and to investigate the potential usefulness of CTSA as a diagnostic tool. Our results suggest that sequential peak cylinder pressures exhibit some characteristic features of deterministic chaos and that CTSA can extract previously unrecognized information from such data. 18 refs., 11 figs., 2 tabs.

• Research Organization: Oak Ridge National Lab., TN (USA)
• Sponsoring Organization: DOE/CE
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 6769159
• Report Number(s): CONF-9010205-1; ON: DE91000729
• Resource Relation: Conference: 1990 SAE international fuels and lubricants conference and exposition, Tulsa, OK (USA), 22-25 Oct 1990
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
SPARK IGNITION ENGINES
TIME-SERIES ANALYSIS
MATHEMATICAL MODELS
METHANOL
OCTANE
PRESSURE MEASUREMENT
TEST FACILITIES
ALCOHOLS
ALKANES
ENGINES
HEAT ENGINES
HYDROCARBONS
HYDROXY COMPOUNDS
INTERNAL COMBUSTION ENGINES
MATHEMATICS
ORGANIC COMPOUNDS
330101* - Internal Combustion Engines- Spark-Ignition
990200 - Mathematics & Computers