Modelling of the Intake Manifold Filling Dynamics 960037
Mean Value Engine Models (MVEMs) are dynamic models which describe dynamic engine variable (or state) responses as mean rather than instantaneous values on time scales slightly longer than an engine event. Such engine variables are the independent variables in nonlinear differential (or state) equations which can be quite compact but nevertheless quite accurate.
One of the most important of the differential equations for a spark ignition (SI) engine is the intake manifold filling (often manifold pressure) state equation. This equation is commonly used to estimate the air mass flow to an SI engine during fast throttle angle transients to insure proper engine fueling.
The purpose of this paper is to derive a modified manifold pressure state equation which is simpler and more physical than those currently found in the literature. This new formulation makes it easier to calibrate a MVEM for different engines and provides new insights into dynamic SI engine operation. The new model also provides information useful for EGR control.
Citation: Hendricks, E., Chevalier, A., Jensen, M., Sorenson, S. et al., "Modelling of the Intake Manifold Filling Dynamics," SAE Technical Paper 960037, 1996, https://doi.org/10.4271/960037. Download Citation
Author(s):
Elbert Hendricks, Alain Chevalier, Michael Jensen, Spencer C. Sorenson, Dave Trumpy, Joe Asik
Affiliated:
Technical University of Denmark, Ford Motor Co.
Pages: 27
Event:
International Congress & Exposition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
Electronic Engine Controls 1996-SP-1149, SAE 1996 Transactions - Journal of Engines-V105-3
Related Topics:
Spark ignition engines
Manifolds
Throttles
Exhaust gas recirculation (EGR)
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