文档介绍：SAE 950417
Automotive Engine Modeling for
Real-Time Control Using
ATLAB IMULINK
This paper was published and presented at the Society of Automotive Engineers M /S
1995 International Congress and Exposition, Detroit, MI.
For more information you can contact: Robert W. Weeks
Modular Systems
Phone: :
SAE (412) 776-4841
Robert Weeks (847) 869-2023 bobweeks@ John J. Moskwa
ertrain Control Research Laboratory
John Moskwa (608) 263-2423 ******@ University of Wisconsin-Madison
ABSTRACT INTRODUCTION
The use of graphical dynamic system simulation software Dynamic system simulation software is an important tool
is ing more popular as automotive engineers strive to for developing reliable, low emission engine and powertrain
reduce the time to develop new control systems. The use of control systems. panies market software (and
model-based control methods designed to meet future emission hardware) that can be used to rapidly simulate a dynamic
and diagnostic regulations has also increased the need for system and its controller using binations of PC
validated engine models. A previously validated, nonlinear, and/or workstation technology.‡ Many of panies
mean-torque predictive engine model* is converted to provide software tools that allow development of libraries of
MATLAB / SIMULINK† to illustrate the benefits of a ponent models. As ponent model libraries are
simulation environment. The model simulates a port-fuel- developed, new control systems are easily simulated by
injected, spark-ignition engine and includes air, fuel and EGR reusing previously built subsystems.
dynamics in the intake manifold as well as the process delays In an effort to develop some of these reusable subsystem
inherent in a four-stroke cycle engine. The engine model can models, a previously validated mean torque predictive engine
be used in five ways: model was converted from FORTRAN to MATLAB /
SIMULINK.§ The SIMULINK engine model is simulated
• As a nonre