scholarly journals Emission Characteristics and Performance of Marine Four-stroke Diesel Engine Operated with Emulsified Marine Diesel Fuels in Different Mean Water Particle Diameter

2004 ◽  
Vol 39 (12) ◽  
pp. 905-912
Author(s):  
T. ZHANG ◽  
T. TSUKAMOTO ◽  
K. OHE ◽  
H. OKADA
Keyword(s):  
Diesel Engine ◽  
Particle Diameter ◽  
Emission Characteristics ◽  
Water Particle ◽  
Diesel Fuels ◽  
Marine Diesel ◽  
And Performance

Modeling and performance analysis of diesel engine considering the heating effect of blow-by on cylinder intake gas

2021 ◽  
pp. 146808742110692
Author(s):  
Zhenyu Shen ◽  
Yanjun Li ◽  
Nan Xu ◽  
Baozhi Sun ◽  
Yunpeng Fu ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Engine Performance ◽  
Marine Diesel Engine ◽  
Heating Effect ◽  
Shipping Industry ◽  
Low Speed ◽  
Proposed Model ◽  
International Regulations ◽  
Marine Diesel ◽  
And Performance

Recently, the stringent international regulations on ship energy efficiency and NOx emissions from ocean-going ships make energy conservation and emission reduction be the theme of the shipping industry. Due to its fuel economy and reliability, most large commercial vessels are propelled by a low-speed two-stroke marine diesel engine, which consumes most of the fuel in the ship. In the present work, a zero-dimensional model is developed, which considers the blow-by, exhaust gas bypass, gas exchange, turbocharger, and heat transfer. Meanwhile, the model is improved by considering the heating effect of the blow-by gas on the intake gas. The proposed model is applied to a MAN B&W low-speed two-stroke marine diesel engine and validated with the engine shop test data. The simulation results are in good agreement with the experimental results. The accuracy of the model is greatly improved after considering the heating effect of blow-by gas. The model accuracy of most parameters has been improved from within 5% to within 2%, by considering the heating effect of blow-by gas. Finally, the influence of blow-by area change on engine performance is analyzed with considering and without considering the heating effect of blow-by.

The Effects of Alkaline Catalysts in Used Frying Oil Biodiesel on the Diesel Engine Performances

2014 ◽  
Vol 554 ◽  
pp. 449-453
Author(s):  
Mahanum Zamberi ◽  
Farid Nasir Ani ◽  
Safaruddin Gazali Herawan
Keyword(s):  
Diesel Engine ◽  
Lower Cost ◽  
Engine Emissions ◽  
Alkaline Catalyst ◽  
Diesel Fuels ◽  
Partial Load ◽  
Monoalkyl Esters ◽  
And Performance ◽  
Engine Emission ◽  
Emissions And Performance

The biodiesel, defined as monoalkyl esters from waste vegetable oils are being produced widely as a viable alternative diesel fuels due to its lower cost, largest producer and reduces the disposal problem. In this study, the effects of catalyst formulation on biodiesel yield are evaluated by using three different alkaline catalyst; sodium hydroxide (NaOH), potassium hydroxide (KOH) and sodium methoxide (NaOCH3) with methanol via transesterification process and are tested in a four cylinder Mitsubishi Pajero 2.5cc Intercooler Turbo Diesel Engine. The engine emissions and performance were recorded under partial load within the range of 1000 to 3500 rpm of the biodiesel (B100) fuels compared with the diesel fuel. The best yield percentage was obtained using NaOCH3 as catalyst whilst KOH is the most convenient and simpler in process. NaOH was found to be more superior than the other two catalysts in terms of lower cost production and low engine emission.

scholarly journals Influence of Palm Biofuel for Marine Diesel Engine on Combustion and Exhaust Emission Characteristics

2018 ◽  
Vol 53 (3) ◽  
pp. 441-446 ◽  
Author(s):  
Sumito Nishio ◽  
Tetsugo Fukuda ◽  
Aguk Zuhdi Muhammad Fathallah ◽  
Hari Setiapraja
Keyword(s):  
Diesel Engine ◽  
Exhaust Emission ◽  
Emission Characteristics ◽  
Marine Diesel Engine ◽  
Marine Diesel
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