Injection Strategy Optimization for a Light Duty DI Diesel Engine in Medium Load Conditions with High EGR rates

2009 ◽  
Author(s):  
Arjan Helmantel ◽  
Valeri Golovitchev
Keyword(s):  
Diesel Engine ◽  
Injection Strategy ◽  
Light Duty ◽  
Di Diesel Engine ◽  
Load Conditions

Effect of Injection Strategy on Cold Start Performance in an Optical Light-Duty DI Diesel Engine

2009 ◽  
Vol 2 (2) ◽  
pp. 431-442 ◽  
Author(s):  
Clément Chartier ◽  
Ulf Aronsson ◽  
Öivind Andersson ◽  
Rolf Egnell
Keyword(s):  
Diesel Engine ◽  
Cold Start ◽  
Injection Strategy ◽  
Light Duty ◽  
Di Diesel Engine

Utilization of waste cooking oil in a light-duty DI diesel engine for cleaner emissions using bio-derived propanol

Fuel ◽  
2019 ◽  
Vol 235 ◽  
pp. 832-837 ◽  
Author(s):  
R. Dhanasekaran ◽  
S. Ganesan ◽  
B. Rajesh Kumar ◽  
S. Saravanan
Keyword(s):  
Diesel Engine ◽  
Waste Cooking Oil ◽  
Cooking Oil ◽  
Light Duty ◽  
Di Diesel Engine

Effects of B20 on Combustion, Emissions and Performance of a Light-Duty Diesel Engine

2009 ◽  
Author(s):  
Amy M. Peterson ◽  
Po-I Lee ◽  
Ming-Chia Lai ◽  
Ming-Cheng Wu ◽  
Craig L. DiMaggio
Keyword(s):  
Diesel Engine ◽  
High Speed ◽  
Combustion Noise ◽  
Low Temperature Combustion ◽  
Performance And Emission ◽  
Ultra Low Sulfur Diesel ◽  
White Grease ◽  
Light Duty ◽  
Di Diesel Engine ◽  
And Performance

This paper compares 20% bio-diesel (B20-choice white grease) fuel with baseline ultra low sulfur diesel (ULSD) fuel on the performance of combustion and emissions of a light-duty 4-cylinder 2.8-liter common-rail DI diesel engine. The results show that operating the engine in the Low Temperature Combustion (LTC) regime produces lower PM and NOx with a slight penalty in fuel consumption, THC, and CO emissions. B20, in general, produces less soot. A slight increase in NOx emissions is shown with B20 compared to ULSD, with an exception at the high speed point where B20 has lower NOx values. In addition, the performance and emission characteristics are investigated as a function of the ECU injection strategy. The addition of pilot injections is found to effectively reduce combustion noise and extends the injection retard window to reach LTC combustion regimes with acceptable noise level for LD diesel engines.

DOE Approach for Optimizing the Combustion Parameters with Multiple Injection Strategy in Light Duty Diesel Engine

2013 ◽  
Author(s):  
Jyotirmoy Barman ◽  
Sumit Arora ◽  
Akhilesh Shukla ◽  
Rizwan Khan ◽  
Ashish Moholkar
Keyword(s):  
Diesel Engine ◽  
Multiple Injection ◽  
Injection Strategy ◽  
Light Duty ◽  
Multiple Injection Strategy

Detailed Evaluation of a New Semi-Empirical Two-Zone NOx Model by Application on Various Diesel Engine Configurations

2012 ◽  
Author(s):  
Stelios Provataris ◽  
Nicholas Savva ◽  
Dimitrios Hountalas
Keyword(s):  
Diesel Engine ◽  
Accurate Estimation ◽  
Operating Parameters ◽  
Nox Emissions ◽  
Heavy Duty ◽  
Nox Formation ◽  
Light Duty ◽  
Physically Based ◽  
Di Diesel Engine ◽  
Semi Empirical

Over a significant period of time, efforts have been made towards a valid and accurate estimation of DI diesel engine NOx emissions. Considering the fact that experiments have a high cost in both time and money, modelling approaches have been developed in an effort to overcome these issues. It is well known that accuracy in the prediction of NOx emissions lies specifically on the accurate estimation of local temperature and O2 histories inside the combustion chamber that govern NOx formation, fulfilled by an accurate estimation of the combustion mechanism. To account for the actual effect of parameters that control NOx formation and overcome inefficiencies introduced from existing purely empirical models or artificial neural networks, valid only on the combustion systems for which they were developed [1], an alternative solution is the introduction of physically based semi-empirical models. Towards this direction, in the present work is presented and evaluated a new modelling approach, based on the combustion rate obtained from the measured cylinder pressure trace using Heat Release Rate Analysis. The model used is a semi-empirical two-zone one which makes use of the estimated elementary fuel mass burnt at each crank angle interval. The combustion process is considered to be adiabatic, while chemical dissociation is also considered. With this approach, temperature distribution throughout the combustion chamber is considered for, together with its evolution during the engine cycle. In addition, O2 availability is also considered for through the calculated charge composition. The result is an extremely fast computational model, combining the advantages of both empirical and physically based ones. In the present work is given a detailed validation of the model, from its application on two different types of diesel engines: a heavy-duty DI diesel engine and a light-duty DI diesel engine with pilot fuel injection. A significant number of cases where tested for both engine configurations, considering different operation points and variation of operating parameters, such as rail pressure and EGR. The twelve points of the European Stationary Cycle (ESC) were covered for the case of the heavy duty DI diesel engine, whilst for the light-duty DI engine a total number of forty-six operating points was studied. For both engine configurations the model reveals a very good predictive ability, considering for the effect of all operating parameters examined on NOx emissions. However, there is potential for improvement and development on its physical base for even more accurate predictions. The merits of good accuracy in prediction trends with varying engine operating parameters — even without calibration — and low computational time establish a potential for model use in engine development, optimization studies and model based control applications.

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