http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
automotive engine model for air-fuel ratio control using cylinder pressure information
xiv, 149 leaves : illustrations ; 28 cm.
"better" non-overshooting response while at the same time
a feedback controller to be designed to close the loop so
achieving other feedback objectives is feasible.
and fast air-fuel ratio (AFR) control in combustion engines.
and fuel mass input into the combustion cylinder each cycle
and predicts only one value of AFR in the cylinder for each
averaging engine model was derived in the time-domain, using
be superior to that with the H2optimal controller.
be used to design a "better" AFR control system. First, an
combustion (IC) engine and proposes an engine model which can
continuous differential equations. H2-optimal control
cycle. From a controls viewpoint, this is more useful. The
cylinder pressure information is presented. Analysis,
derived. The model was linearized and discretized to an
engine model and a classical feedback-feedforward controller
event-based model which requires only one value of air mass
for synthesizing a control system for an automotive internal
Increasingly strict emission standards require very accurate
located in the exhaust manifold. The analysis, results and
model was analyzed and proven to have enough information for
objectives. A proposed control scheme based on the in-
overshooting response. This design was based on the current
performance with the pressure-based controller is believed to
Second, a non-averaging, cyclic, crank angle domain model was
shortcomings of this design methodology are presented.
simulations and results are presented. The achievable
state-of-the-art exhaust gas oxygen (EGO) sensor which is
that the response of the system meets the specified
theories for robust design were applied to the linearized
Therefore, with the pressure information, design for a
This thesis addresses the design methodology currently used
was designed, which strives to achieve robust non-
"Major subject: Electrical Engineering".
Issued also on microfiche from Lange Micrographics.
Includes bibliographical references: pages 109-111.