Spark Ignition Engine Mass Air Flow Control for Precise Torque Management
Spark Ignition Engine Mass Air Flow Control for Precise Torque Management
G. Ingram, M. Franchek, and V. Balakrishnan
In Proc. SAE World Congress, Detroit, MI, March 2003
Abstract:
Presented in this paper is a robust feedback controller design
procedure to regulate the mass air flow (MAF) into a 4.6L V8 spark
ignition engine. A system level model of engine throttle to engine
mass air flow is experimentally determined. In addition, an H-infinity
controller is designed to control engine mass air flow with zero steady
state error while addressing the nonlinear throttle characteristics
and pure delay. The controller design methodology applied to the mass
air flow control problem is discussed and an interpretation of the
controller presented. Finally, engine dynamometer data demonstrates
that the H-infinity controller rejects noise and disturbances while meeting
transient and steady state performance objectives.
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