Effect of Cetane Improver on Combustion and Emission Characteristics of Coal-Derived Sasol IPK in a Single Cylinder Diesel Engine

2014 ◽  
Author(s):  
Ziliang Zheng ◽  
Umashankar Joshi ◽  
Naeim Henein ◽  
Eric Sattler
Keyword(s):  
Diesel Engine ◽  
Cetane Number ◽  
Control Unit ◽  
Injection System ◽  
Oxides Of Nitrogen ◽  
Single Cylinder ◽  
Common Rail Injection System ◽  
Air Temperatures ◽  
Common Rail Injection ◽  
Ignition Quality

Sasol IPK is a coal-derived synthetic fuel under consideration as a blending stock with JP-8 for use in military ground vehicles. Since Sasol IPK is a low ignition quality fuel with Derived Cetane Number (DCN) of 31, there is a need to improve its ignition quality. This paper investigates the effect of adding different amounts of Lubrizol 8090 cetane improver to Sasol IPK on increasing its DCN. The experimental investigation was conducted in a single-cylinder research type diesel engine. The engine is equipped with a common rail injection system and an open Engine Control Unit (ECU). Experiments covered different injection pressures and intake air temperatures. Analysis of test results was made to determine the effect of cetane improver percentage in the coal-derived Sasol IPK blend on autoignition, combustion and emissions of carbon monoxide (CO), total unburned hydrocarbon (HC), oxides of nitrogen (NOx), and particulate matter (PM). In addition, the effect of cetane improver on the apparent activation energy of the global autoignition reactions was determined.

Effect of Cetane Improver on Combustion and Emission Characteristics of Coal-Derived Sasol Isomerized Paraffinic Kerosene in a Single Cylinder Diesel Engine

2015 ◽  
Vol 137 (7) ◽  
Author(s):  
Ziliang Zheng ◽  
Umashankar Joshi ◽  
Naeim Henein ◽  
Eric Sattler
Keyword(s):  
Diesel Engine ◽  
Cetane Number ◽  
Control Unit ◽  
Injection System ◽  
Oxides Of Nitrogen ◽  
Single Cylinder ◽  
Common Rail Injection System ◽  
Air Temperatures ◽  
Auto Ignition ◽  
Ignition Quality

Sasol isomerized paraffinic kerosene (IPK) is a coal-derived synthetic fuel under consideration as a blending stock with JP-8 for use in military ground vehicles. Since Sasol IPK is a low ignition quality fuel with derived cetane number (DCN) of 31, there is a need to improve its ignition quality. This paper investigates the effect of adding different amounts of Lubrizol 8090 cetane improver to Sasol IPK on increasing its DCN. The experimental investigation was conducted in a single cylinder research type diesel engine. The engine is equipped with a common rail injection system and an open engine control unit. Experiments covered different injection pressures and intake air temperatures. Analysis of test results was made to determine the effect of cetane improver percentage in the coal-derived Sasol IPK blend on auto-ignition, combustion and emissions of carbon monoxide (CO), total unburned hydrocarbon (HC), oxides of nitrogen (NOx), and particulate matter (PM). In addition, the effect of cetane improver on the apparent activation energy of the global auto-ignition reactions was determined.

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.

scholarly journals Influence of the Fuel Properties on the Injection Process and Spray Development in a large ship diesel Engine

2017 ◽  
Author(s):  
Ibrahim Najar ◽  
Bert Buchholz ◽  
Benjamin Stengel ◽  
Christian Fink ◽  
Egon Hassel
Keyword(s):  
Diesel Engine ◽  
Cone Angle ◽  
Fuel Properties ◽  
Fuel Oil ◽  
Injection System ◽  
Heavy Fuel Oil ◽  
Common Rail Injection System ◽  
Injection Process ◽  
Medium Speed ◽  
Common Rail Injection

The present paper deals with the influence of fuel properties on the spray behaviour. This influence was studiedexperimentally using a common rail injection system from a medium speed diesel engine. The experiments have been performed with diesel fuel (EN-590) and heavy fuel oil (RMG 180) on a constant volume chamber at room temperature. Comparison of the spray characteristics shows that the heavy fuel oil penetrates deeper in the chamber. However, the diesel spray has a bigger cone angle. These results formed the basis for a further development of the 1D-model [1] to predict the spray penetration by considering the fuel properties and temperature.DOI: http://dx.doi.org/10.4995/ILASS2017.2017.4787

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
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