The Use of a Mean Value Model to Achieve the Best Efficiency of a Variable Speed Generator Coupled to a Diesel Engine

2012 ◽  
Author(s):  
Augusto F. Pacheco ◽  
Jonas R. Tibola ◽  
Mario E. S. Martins ◽  
Paulo R. M. Machado ◽  
Humberto Pinheiro ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Mean Value ◽  
Variable Speed ◽  
Mean Value Model ◽  
Value Model

A Mean-Value Model of a Turbocharged HCCI Diesel Engine with External Mixture Formation

2005 ◽  
Author(s):  
M. Canova ◽  
L. Garzarella ◽  
M. Ghisolfi ◽  
S. Midlam-Mohler ◽  
Y. Guezennec ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Mean Value ◽  
Mixture Formation ◽  
Mean Value Model ◽  
Value Model

Model and Calibration of a Diesel Engine Air Path With an Asymmetric Twin Scroll Turbine

2013 ◽  
Author(s):  
Mike J. Hand ◽  
Erik Hellström ◽  
Doohyun Kim ◽  
Anna Stefanopoulou ◽  
Justin Kollien ◽  
...  
Keyword(s):  
Diesel Engine ◽  
System Analysis ◽  
Flow Characteristics ◽  
Load Condition ◽  
Mean Value ◽  
Complex Flow ◽  
Transient Control ◽  
Mean Value Model ◽  
Value Model ◽  
And Control

A control-oriented model and its associated tuning methodology is presented for the air path of a six cylinder 13 L diesel engine equipped with an asymmetric twin-scroll turbine, wastegate (WG), and exhaust gas recirculation (EGR). This model is validated against experimental engine data and shows good agreement. The small scroll of the asymmetric twin scroll turbine is fed by the exhaust of three cylinders via a split manifold that operates at higher pressure than the exhaust manifold feeding the larger turbine scroll. The asymmetric design with the high exhaust back pressure on three of the six cylinders gives the necessary EGR capability, with reduced pumping work, but leads to complex flow characteristics. The mean-value model describes the flows through the engine, the flow through the two turbine scrolls, the EGR flow, and the WG flow as they are defined, and defines the pressure of the manifolds they connect to. Using seven states that capture the dynamics of the pressure and composition in the manifolds and the speed of the turbo shaft, the model can be used for transient control, along with set point optimization for the EGR and WG flows for each speed and load condition. The relatively low order of the model makes it amenable to fast simulations, system analysis, and control design.

scholarly journals Calibration and Validation of a Mean Value Model for Turbocharged Diesel Engine

2013 ◽  
Vol 5 ◽  
pp. 579503 ◽  
Author(s):  
Ruixue Li ◽  
Ying Huang ◽  
Gang Li ◽  
Kai Han ◽  
He Song
Keyword(s):  
Diesel Engine ◽  
Mean Value ◽  
Turbocharged Diesel Engine ◽  
Calibration And Validation ◽  
Mean Value Model ◽  
Value Model

Identification of a Mean Value Model of a Modern Diesel Engine for Control Design

2003 ◽  
Author(s):  
Michael Hopka ◽  
Devesh Upadhyay ◽  
Yann Guezennec ◽  
Giorgio Rizzoni
Keyword(s):  
Diesel Engine ◽  
Engine Performance ◽  
Cumulative Effect ◽  
Mean Value ◽  
System Response ◽  
Empirical Relationships ◽  
Model Complex ◽  
Mean Value Model ◽  
Essential Set ◽  
Value Model

The modern diesel engine with its multiple subsystem interactions is a very complex plant. Especially fascinating are the interactions of the VGT and EGR control actions in their cumulative effect on the overall air loop dynamics. To circumvent the problem of manpower intensive engine mapping for determining the best operating control map, a generic mean value model of a diesel engine, based on physical principles and empirical definitions where necessary, was developed. In this paper we present the identification of this model with respect to a Fiat 2.4L JTD 166. It will be shown that there is an essential set of parameters that must be identified in order to model processes that are too complicated for physics based modeling. The parameter set is utilized in simplified empirical relationships to model complex engine phenomena such as combustion and orifice flow through the EGR and VGT, facilitating model portability. Results from matching these empirical relationships to the engine of interest and model predictions of air loop system response to EGR and VGT control inputs show good agreement with actual engine performance and are presented in this paper.

A detailed Mean Value Model of the exhaust system of an automotive Diesel engine

2008 ◽  
Author(s):  
Paolo FIORANI ◽  
Agostino GAMBAROTTA ◽  
Gabriele LUCCHETTI ◽  
Francesco P. AUSIELLO ◽  
Matteo DE CESARE ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Exhaust System ◽  
Mean Value ◽  
Mean Value Model ◽  
Value Model

A Mean Value Model of the Exhaust System with SCR for an Automotive Diesel Engine

2009 ◽  
Author(s):  
Federico Covassin ◽  
Mario Preziuso ◽  
Matteo De Cesare ◽  
Gabriele Serra
Keyword(s):  
Diesel Engine ◽  
Exhaust System ◽  
Mean Value ◽  
Mean Value Model ◽  
Value Model
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