Investigation of Spray Penetration and Fuel Distribution Inside the Piston Bowl of a 1.9 l DI Diesel Engine Using Two-Dimensional Mie Scattering

1992 ◽  
Author(s):  
Kai-Uwe Münch ◽  
Alfred Leipertz
Keyword(s):  
Diesel Engine ◽  
Mie Scattering ◽  
Two Dimensional ◽  
Spray Penetration ◽  
Fuel Distribution ◽  
Piston Bowl ◽  
Di Diesel Engine

Modelling and CFD Simulation of Effects of Spray Penetration on Piston Bowl Impingement in a DI Diesel Engine for Biodiesel-Diesel Blend (B20)

2012 ◽  
Author(s):  
Subhash Lahane ◽  
K. A. Subramanian
Keyword(s):  
Diesel Engine ◽  
Cfd Simulation ◽  
Injection Pressure ◽  
Spray Penetration ◽  
Penetration Distance ◽  
Piston Bowl ◽  
Fuel Jet ◽  
Wall Impingement ◽  
Di Diesel Engine ◽  
Nozzle Hole

The effect of spray penetration distance on fuel impingement on piston bowl of a 7.4 kW diesel engine for biodiesel-diesel blend (B20) was studied using modeling and CFD simulation. As the peak inline fuel pressure increased from 460 bar with base diesel to 480 bar with B20, the spray penetration distance (fuel jet) increases. It is observed from the study that the jet tip hits on piston bowl resulting to fuel impingement which is one of durability issues for use of biodiesel blend in the diesel engine. In addition to this, the simulation of effects of different injection pressures up to 2000 bar on spray penetration distance and wall impingement were also studied. The penetration distance increases with increase the in-line fuel pressure and it decreases with decrease nozzle hole diameter. The fuel impingement on piston bowl of the engine with high injection pressure (typically 1800 bar) can be avoided by decreasing the nozzle diameter from 0.19 mm to 0.1 mm. Increase in swirl ratio could also reduce fuel impingement problem.

Efficient Approach for Optimization of Piston Bowl Shape, Compression Ratio and EGR for DI Diesel Engine

2011 ◽  
Author(s):  
Shabbir Sheikh ◽  
Nitin Gokhale ◽  
Vishal Thatte ◽  
Naresh Gandhi ◽  
Bhalchandra Deshmukh ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Compression Ratio ◽  
Efficient Approach ◽  
Piston Bowl ◽  
Di Diesel Engine

Structural Analysis on Swirling Grooved SCC Piston

2014 ◽  
Vol 984-985 ◽  
pp. 452-455
Author(s):  
J. Isaac Joshua Ramesh Lalvani ◽  
E. Prakash ◽  
M. Parthasarathy ◽  
S. Jayaraj ◽  
K. Annamalai
Keyword(s):  
Diesel Engine ◽  
Structural Analysis ◽  
Combustion Efficiency ◽  
Shallow Depth ◽  
Structural Effects ◽  
Constant Depth ◽  
Piston Bowl ◽  
Piston Crown ◽  
Di Diesel Engine

This journal describes a study on the structural effects of DI diesel engine conventional piston and modified pistons. To enhance the combustion efficiency of the engine conventional piston has been modified as shallow depth piston bowl with swirling grooves on the piston crown. Three different widths (5.5mm, 6.5mm and 7.5mm) and constant depth (00 to 50) swirling grooves added on the shallow depth combustion chambered piston crown. The conventional piston and modified pistons has been modeled in CATIA software and structural analysis done in ANSYS 14. In structural analysis observed that deformation for the modified pistons are same and negligible as compared to the conventional piston.

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