Diesel Combustion Control with Closed-Loop Control of the Injection Strategy

Schnorbus, Thorsten; Pischinger, Stefan; Körfer, Thomas; Lamping, Matthias; Tomazic, Dean; Tatur, Marek

doi:10.4271/2008-01-0651

Cited by 37 publications

(13 citation statements)

References 3 publications

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“…Moreover, crank angle resolved engine models [31] with varying degree of complexities [45] in conjunction with statistical insight derived from experimental data and Artificial Neural network based models are getting more attention for vehicle calibration and optimization recently [37]. These are for predicting cycle-bycycle indicated torque [46], detecting and estimating spark timing [47,48] to employ fuel injection strategy [50,51,45,52,53,54], for cold start control strategy [55] and for effective implementation of other controls such as knock and for monitoring the performance of catalytic converters.…”

Section: Introductionmentioning

confidence: 99%

Implementation of EOQ and Lambert W function in 1-D engine simulation model for optimizing fuel injection in GDI engine

Santirso

Samuel

2019

Applied Mathematical Modelling

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The aim of this study was to implement Economic Order Quantity method (EOQ) together with the Lambert W function in a 1-D engine simulation model in order to develop a fuel control strategy for a Gasoline direct injection (GDI) engine. Previous work of the co-author demonstrated the possibility of optimizing fuel injection quantity in GDI engine using the EOQ that is commonly used in supply chain of perishable products. This work extends the previous work and implements it in a 1-D, crank angle resolved, engine simulation model for the application of model based calibration process. The present work uses a validated engine simulation model, which is based on predictive combustion modelling approach, and couples the 1-D engine simulation model with SIMULINK to add the evaporation, wall-wetting and heat transfer models. It employs FORTRAN subroutines to modify the internal code of the 1-D simulation software in order to add crank angle resolved evaporation model. Finally, EOQ with Lambert W function was added to the model using MATLAB with special attention to the decimal control for the solution. This study demonstrated that EOQ and Lambert W functions together are a suitable method to develop fuel control strategy for a model based calibration procedure when implemented in crank angle resolved 1-D simulation model.

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Section: Introductionmentioning

confidence: 99%

Implementation of EOQ and Lambert W function in 1-D engine simulation model for optimizing fuel injection in GDI engine

Santirso

Samuel

2019

Applied Mathematical Modelling

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“…Determination of combustion metrics for an internal combustion engine has the potential of providing feedback for closed-loop combustion phasing control to meet current and upcoming emission and fuel consumption regulations. Closed-loop control of the combustion process has been a focus for engine research and development [1][2][3]. Open-loop operation based on calibration maps which are conservatively set based upon laboratory operation can give a quick response and is relatively easy to control.…”

Section: Introductionmentioning

confidence: 99%

Review of Sensing Methodologies for Estimation of Combustion Metrics

Jia

Naber

Blough

2016

Journal of Combustion

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For reduction of engine-out emissions and improvement of fuel economy, closed-loop control of the combustion process has been explored and documented by many researchers. In the closed-loop control, the engine control parameters are optimized according to the estimated instantaneous combustion metrics provided by the combustion sensing process. Combustion sensing process is primarily composed of two aspects: combustion response signal acquisition and response signal processing. As a number of different signals have been employed as the response signal and the signal processing techniques can be different, this paper did a review work concerning the two aspects: combustion response signals and signal processing techniques. In-cylinder pressure signal was not investigated as one of the response signals in this paper since it has been studied and documented in many publications and also due to its high cost and inconvenience in the application.

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“…Many works demonstrate that diesel engine out emissions, i.e., particulate matter and NOx, can be simultaneously reduced through the adoption of modem low temperature combustion strategies (LTC) [1,2], mainly characterized by highly premixed combustion portions and high EGR rates. Unfortunately, LTC combustion strategies are very sensitive to cylinder thermal condi tions and air/fuel mixing, that can cause combustion instability and significant cylinder-by-cylinder torque deviations [3].…”

Section: Introductionmentioning

confidence: 99%

“…Many works demonstrate that a significant pollutant emissions reduction can be achieved through a closed-loop combustion con trol methodology based on real-time cylinder pressure processing [4], As a matter of fact, cylinder pressure measurement allows calculating several quantities that provide important information about combustion effectiveness, such as torque delivered by each cylinder, start of combustion (SOC), center of combustion (A50) and pressure peak location within the engine cycle [2]. However, cylinder pressure on-board installation is still uncommon, mainly due to problems related to cost and measurement reliability, since the accuracy of the newly developed piezo-resistive sensors usually do not meet the requirements for combustion control [5].…”

Section: Introductionmentioning

confidence: 99%

Diesel Engine Combustion Sensing Methodology Based on Vibration Analysis

Ponti

Ravaglioli

Cavina

et al. 2014

Journal of Engineering for Gas Turbines and Power

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The increasing request for pollutant emissions reduction spawned a great deal of research in the field of combustion control and monitoring. As a matter of fact, newly developed low temperature combustion strategies for diesel engines allow obtaining a significant reduction both in particulate matter and NOx emissions, combining the use of high EGR rates with a proper injection strategy. Unfortunately, due to their nature, these innovative combustion strategies are very sensitive to in-cylinder thermal conditions. Therefore, in order to obtain a stable combustion, a closed-loop combustion control methodology is needed. Many works demonstrate that a closed-loop combustion control strategy can be based on real-time analysis of in-cylinder pressure trace that provides important information about the combustion process, such as start of combustion, center o f combustion and torque delivered by each cylinder. Nevertheless, cylinder pressure sensors on-board installation is still uncommon, due to problems related to unsatisfactory measurement long term reliability and cost. This paper presents a newly developed approach that allows extracting information about combustion effectiveness through the analysis of engine vibrations. In particular, the developed methodology can be used to obtain an accurate estimation of the indicated quantities of interest combining the infor mation provided by engine speed fluctuations measurement and by the signals coming from acceleration transducers mounted on the engine. This paper also reports the results obtained applying the whole methodology to a light-duty turbocharged common rail diesel engine.

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Diesel Combustion Control with Closed-Loop Control of the Injection Strategy

Cited by 37 publications

References 3 publications

Implementation of EOQ and Lambert W function in 1-D engine simulation model for optimizing fuel injection in GDI engine

Implementation of EOQ and Lambert W function in 1-D engine simulation model for optimizing fuel injection in GDI engine

Review of Sensing Methodologies for Estimation of Combustion Metrics

Diesel Engine Combustion Sensing Methodology Based on Vibration Analysis

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