Performance and Emission Evaluation of Marine Diesel Engine Using Two–Phase Emulsion as Fuel

2020 ◽  
Vol 14 (5) ◽  
Keyword(s):  
Diesel Engine ◽  
Marine Diesel Engine ◽  
Two Phase ◽  
Performance And Emission ◽  
Marine Diesel

scholarly journals Effects of injection pressure on cavitation and spray in marine diesel engine

2016 ◽  
Vol 9 (3) ◽  
pp. 186-198 ◽  
Author(s):  
Fei Yan ◽  
Yuchen Du ◽  
Lihui Wang ◽  
Wenxian Tang ◽  
Jian Zhang ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Bubble Dynamics ◽  
Pressure Fluctuations ◽  
Injection Pressure ◽  
Spray Angle ◽  
Marine Diesel Engine ◽  
Sauter Mean Diameter ◽  
Two Phase ◽  
Marine Diesel ◽  
Single Bubble Dynamics

Numerical simulation of the cavitation and spray in a marine diesel engine is performed to investigate the effects of injection pressure on the cavitation flow and spray characteristics in the marine diesel engine, which in turn influence atomization and combustion in the cylinder. A two-phase flow model combined with single bubble dynamics and a droplet break-up model are used to simulate cavitation and spray, respectively, and the results are compared to the experimental data. With increasing injection pressure, the pressure fluctuations inside the nozzle become more intense. The spray penetration is proportional to time at the beginning of injection. Higher injection pressure increases the spray angle. In addition, massive structures on spray edge can return to the spray body, whereas the massive structures on the spray head remain unchanged throughout its lifetime. Each additional 20 MPa of injection pressure reduces the Sauter mean diameter by approximately 9%.

INCREASED OPERATIONS RELIABILITY OF THE «CUMMINS» MARINE ENGINE SPEED CONTROL SYSTEM

2020 ◽  
Vol 2 ◽  
pp. 3-8
Author(s):  
G.V. GOGOLEV
Keyword(s):  
Control System ◽  
Diesel Engine ◽  
Control Systems ◽  
Engine Speed ◽  
Speed Control ◽  
Marine Diesel Engine ◽  
Two Phase ◽  
Marine Engine ◽  
Cooling Devices ◽  
Marine Diesel

The analysis of using cooling devices possibility on the basis of two–phase thermal siphons in «Cummins» marine diesel engine speed control systems is carried out.

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