Modeling and Analysis of an Inherently Multi-Rate Sampling Fuel Injected Engine Idle Speed Control Loop

[+] Author and Article Information
B. K. Powell, J. A. Cook

Scientific Research Laboratory, Ford Motor Co., Dearborn, Mich.

J. W. Grizzle

University of Illinois, Coordinated Science Laboratory, Urbana, Ill. 61801

J. Dyn. Sys., Meas., Control 109(4), 405-410 (Dec 01, 1987) (6 pages) doi:10.1115/1.3143874 History: Received October 01, 1986; Online July 21, 2009


This paper develops a model for the idle speed control of a six cylinder electronically fuel injected, spark ignition engine. The inherently discrete microprocessor based fuel controller is not constrained to operate at the engine’s natural sampling rate, resulting in a hybrid (continuous-discrete) multi-rate system. A method for evaluating the stability of the system is developed.

Copyright © 1987 by ASME
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