Effects of Oxygenated Fuel and Cetane Improver on Exhaust Emission from Heavy-Duty DI Diesel Engines

1994 ◽  
Author(s):  
Yukio Akasaka ◽  
Yoshihito Sakurai
Keyword(s):  
Diesel Engines ◽  
Exhaust Emission ◽  
Heavy Duty ◽  
Oxygenated Fuel

scholarly journals Computational study of the effect of different injection angle on heavy duty diesel engine combustion

2009 ◽  
Vol 13 (3) ◽  
pp. 9-21 ◽  
Author(s):  
Ali Ranjbar ◽  
Kurosh Sedighi ◽  
Mousa Farhadi ◽  
Mohsen Pourfallah
Keyword(s):  
Diesel Engine ◽  
Diesel Engines ◽  
Computational Study ◽  
Exhaust Emission ◽  
Cylinder Pressure ◽  
Heavy Duty ◽  
Injection Angle ◽  
Heavy Duty Diesel Engine ◽  
Heavy Duty Diesel ◽  
Injection Strategies

Diesel engines exhausting gaseous emission and particulate matter have long been regarded as one of the major air pollution sources, particularly in metropolitan areas, and have been a source of serious public concern for a long time. The choosing various injection strategies is not only motivated by cost reduction but is also one of the potentially effective techniques to reduce exhaust emission from diesel engines. The purpose of this study is to investigate the effect of different injection angles on a heavy duty diesel engine and emission characteristics. The varieties of injection angle were simulated and the emissions like soot and NO is calculated. The comparison between the different injection strategies was also investigated. A combustion chamber for three injection strategies (injection direction with angles of ?=67.5, 70, and 72.5 degree) was simulated. The comparative study involving rate of heat release, in-cylinder temperature, in-cylinder pressure, NO and soot emissions were also reported for different injection strategies. The case of ?=70 is optimum because in this manner the emissions are lower in almost most of crank angle than two other cases and the in-cylinder pressure, which is a representation of engine power, is higher than in the case of ?=67.5 and just a little lower than in the case of ?=72.5.

Strategies to Meet Worldwide Heavy-Duty Diesel Emission Standards

1992 ◽  
Vol 206 (3) ◽  
pp. 161-171 ◽  
Author(s):  
W Cartellieri ◽  
W Kriegler ◽  
F Schweinzer
Keyword(s):  
United States ◽  
Diesel Engines ◽  
The United States ◽  
Exhaust Emission ◽  
Heavy Duty ◽  
Test Procedures ◽  
Emission Standards ◽  
Diesel Oxidation Catalysts ◽  
Heavy Duty Diesel ◽  
State Cycles

The most severe exhaust emission standards for heavy-duty diesel engines will be introduced in the United States in 1994 and 1998 and standards of similar severence have been announced in Japan and in Europe. While in the United States emissions have to be measured in a transient cycle, in both of the other two geographical areas, Europe and Japan, special steady state cycles have been adopted for certifying heavy-duty diesel engines. In the first part of the paper the main characteristics of the three test procedures are compared and those load-speed operating areas identified which most significantly contribute to cycle emissions. Of these, NOx and particulates are the most challenging components. Strategies to reduce them are outlined in later parts of the paper. Emphasis is placed primarily on technologies for in-cylinder emissions reduction, but exhaust gas aftertreatment by diesel oxidation catalysts is also addressed. The achievements of these technologies will be demonstrated by test results from heavy-duty diesel engines of the 1 to 2 litre/cylinder categories.

scholarly journals Particulate emissions of heavy duty diesel engines measured from the tailpipe and the dilution tunnel

2021 ◽  
pp. 105799
Author(s):  
Sheng Su ◽  
Tao Lv ◽  
Yitu Lai ◽  
Jinsong Mu ◽  
Yunshan Ge ◽  
...  
Keyword(s):  
Diesel Engines ◽  
Particulate Emissions ◽  
Heavy Duty ◽  
Heavy Duty Diesel

Effect of H2 and CO Content in Syngas on the Performance and Emission of Syngas-Diesel Dual Fuel Engine - A Review

2014 ◽  
Vol 699 ◽  
pp. 648-653 ◽  
Author(s):  
Bahaaddein K.M. Mahgoub ◽  
Suhaimi Hassan ◽  
Shaharin Anwar Sulaiman
Keyword(s):  
Carbon Monoxide ◽  
Diesel Engines ◽  
Combustion Process ◽  
Exhaust Emission ◽  
Dual Fuel ◽  
Pure Liquid ◽  
Compression Ignition ◽  
Performance And Emission ◽  
Combustion Duration ◽  
Combustible Gases

In this review, a series of research papers on the effects of hydrogen and carbon monoxide content in syngas composition on the performance and exhaust emission of compression ignition diesel engines, were compiled. Generally, the use of syngas in compression ignition (CI) diesel engine leads to reduce power output due to lower heating value when compared to pure liquid diesel mode. Therefore, variation in syngas composition, especially hydrogen and carbon monoxide (Combustible gases), is suggested to know the appropriate syngas composition. Furthermore, the simulated model of syngas will help to further explore the detailed effects of engine parameters on the combustion process including the ignition delay, combustion duration, heat release rate and combustion phasing. This will also contribute towards the efforts of improvement in performance and reduction in pollutants’ emissions from CI diesel engines running on syngas at dual fuel mode. Generally, the database of syngas composition is not fully developed and there is still room to find the optimum H2 and CO ratio for performance, emission and diesel displacement of CI diesel engines.

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