An ℋ∞ linear parameter-varying (LPV) controller for a diesel engine common rail injection system

2007 ◽  
Author(s):  
Gauthier Christophe ◽  
Olivier Sename ◽  
Luc Dugard ◽  
Guillaume Meissonnier
Keyword(s):  
Diesel Engine ◽  
Common Rail ◽  
Injection System ◽  
Linear Parameter ◽  
Linear Parameter Varying ◽  
Common Rail Injection System ◽  
Common Rail Injection ◽  
Parameter Varying

Ion Current, Combustion and Emission Characteristics in an Automotive Common Rail Diesel Engine

2012 ◽  
Vol 134 (4) ◽  
Author(s):  
Naeim A. Henein ◽  
Tamer Badawy ◽  
Nilesh Rai ◽  
Walter Bryzik
Keyword(s):  
Diesel Engine ◽  
Diesel Engines ◽  
Direct Injection ◽  
Common Rail ◽  
Ion Current ◽  
Injection System ◽  
Feedback Signal ◽  
Common Rail Injection System ◽  
Common Rail Injection ◽  
No Emissions

Advanced electronically controlled diesel engines require a feedback signal to the ECU to adjust different operating parameters and meet demands for power, better fuel economy and low emissions. Different types of in-cylinder combustion sensors are being considered to produce this signal. This paper presents results of an experimental investigation on the characteristics of the ion current in an automotive diesel engine equipped with a common rail injection system. The engine is a 1.9 L, 4-cylinder, direct injection diesel engine. Experiments covered different engine loads and injection pressures. The relationships between the ion current, combustion parameters and engine out NO emissions and opacity are presented. The analysis of the experimental data identified possible sources of the ion current produced in diesel engines.

Response Surface Method Optimization of a High-Speed Direct-Injection Diesel Engine Equipped With a Common Rail Injection System

2003 ◽  
Vol 125 (2) ◽  
pp. 541-546 ◽  
Author(s):  
T. Lee ◽  
R. D. Reitz
Keyword(s):  
Diesel Engine ◽  
High Speed ◽  
Direct Injection ◽  
Fuel Efficiency ◽  
Common Rail ◽  
Injection System ◽  
Particulate Emissions ◽  
Common Rail Injection System ◽  
Rsm Optimization ◽  
Common Rail Injection

To overcome the tradeoff between NOx and particulate emissions for future diesel vehicles and engines it is necessary to seek methods to lower pollutant emissions. The desired simultaneous improvement in fuel efficiency for future DI diesels is also a difficult challenge due to the combustion modifications that will be required to meet the exhaust emission mandates. This study demonstrates the emission reduction capability of EGR and other parameters on a high-speed direct-injection (HSDI) diesel engine equipped with a common rail injection system using an RSM optimization method. Engine testing was done at 1757 rev/min, 45% load. The variables used in the optimization process included injection pressure, boost pressure, injection timing, and EGR rate. RSM optimization led engine operating parameters to reach a low-temperature and premixed combustion regime called the MK combustion region, and resulted in simultaneous reductions in NOx and particulate emissions without sacrificing fuel efficiency. It was shown that RSM optimization is an effective and powerful tool for realizing the full advantages of the combined effects of combustion control techniques by optimizing their parameters. It was also shown that through a close observation of optimization processes, a more thorough understanding of HSDI diesel combustion can be provided.

scholarly journals MODELLING OF A DIESEL ENGINE COMMON RAIL INJECTION SYSTEM

2005 ◽  
Vol 38 (1) ◽  
pp. 188-193 ◽  
Author(s):  
Christophe Gauthier ◽  
Olivier Sename ◽  
Luc Dugard ◽  
Guillaume Meissonnier
Keyword(s):  
Diesel Engine ◽  
Common Rail ◽  
Injection System ◽  
Common Rail Injection System ◽  
Common Rail Injection

Dynamic Analysis of Diesel Engine Common Rail Injection System: Part II — Four-Cylinder Injection System

2001 ◽  
Author(s):  
M. Borghi ◽  
M. Milani ◽  
M. Piraccini
Keyword(s):  
High Pressure ◽  
Diesel Engine ◽  
Dynamic Behavior ◽  
Common Rail ◽  
Injection System ◽  
Common Rail System ◽  
Common Rail Injection System ◽  
Rail System ◽  
Common Rail Injection ◽  
The Common

Abstract The paper is aimed at studying the overall dynamic behavior of the Common Rail Injection System actually used on a 4 cylinder industrial Diesel engine. Firstly, the paper introduces the main characteristics of a lumped and distributed parameters model of the high pressure branch of an actual Common Rail System, and the main hypotheses assumed to model it using a multi-port approach code for the analysis of the dynamic response of hydraulic systems submitted to fast transients. The model of the Common Rail System is then used to study its dynamic behavior when involved in the handling of the engine injection cycle for medium values of the crankshaft regime and for different pressure levels in the Rail. The analysis is performed applying to the injectors, to the pressure control valve and to the high-pressure pump the control strategies imposed by the Electronic Central Unit (ECU), as actually implemented into an industrial ECU for Diesel engine management. The model reliability and accuracy are evidenced through a numerical vs. experimental data comparison, mainly in term of rail pressure dynamic behavior. The analysis successively outlined in the paper allows to state how the hydraulic behavior of the Common Rail System interact with the electro-hydraulic injectors dynamics, and to determine the influence of this interaction on the total injected mass per cycle.

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