학술논문
On-Board Calibration of Spark Timing by Extremum Seeking for Flex-Fuel Engines
Document Type
Periodical
Author
Source
IEEE Transactions on Control Systems Technology IEEE Trans. Contr. Syst. Technol. Control Systems Technology, IEEE Transactions on. 21(6):2273-2279 Nov, 2013
Subject
Language
ISSN
1063-6536
1558-0865
2374-0159
1558-0865
2374-0159
Abstract
An extremum-seeking controller is developed to cope with the calibration complexity for modern internal combustion engines capable of operating with different blends of ethanol and gasoline. The optimization scheme adapts the spark timing such that the fuel efficiency, estimated from in-cylinder pressure data, is maximized on-board a vehicle when driving with small load variations. Experiments, performed in a four-cylinder 2 L engine, demonstrate that the developed controller successfully manages to operate the engine close to the maximum fuel efficiency for different fuel blends, even under mild transient load conditions.