Mixture Formation and Combustion Processes of Multi-Hole Nozzle with Micro Orifices for D.I. Diesel Engines

2007 ◽  
Author(s):  
Yuhei Matsumoto ◽  
Jian Gao ◽  
Makoto Namba ◽  
Keiya Nishida
Keyword(s):  
Diesel Engines ◽  
Mixture Formation ◽  
Combustion Processes

Effect of n-heptane and n-decane on exhaust odour in direct injection diesel engines

2005 ◽  
Vol 219 (4) ◽  
pp. 565-571 ◽  
Author(s):  
M M Roy
Keyword(s):  
Direct Effect ◽  
Diesel Fuel ◽  
Diesel Engines ◽  
Ignition Delay ◽  
Boiling Point ◽  
Alternative Fuels ◽  
Direct Injection ◽  
Cetane Number ◽  
Mixture Formation ◽  
Incomplete Combustion

This study investigated the effect of n-heptane and n-decane on exhaust odour in direct injection (DI) diesel engines. The prospect of these alternative fuels to reduce wall adherence and overleaning, major sources of incomplete combustion, as well as odorous emissions has been investigated. The n-heptane was tested as a low boiling point fuel that can improve evaporation as well as wall adherence. However, the odour is a little worse with n-heptane and blends than that of diesel fuel due to overleaning of the mixture. Also, formaldehyde (HCHO) and total hydrocarbon (THC) in the exhaust increase with increasing n-heptane content. The n-decane was tested as a fuel with a high cetane number that can improve ignition delay, which has a direct effect on wall adherence and overleaning. However, with n-decane and blends, the odour rating is about 0.5-1 point lower than for diesel fuel. Moreover, the aldehydes and THC are significantly reduced. This is due to less wall adherence and proper mixture formation.

Scaling spray combustion processes in marine low-speed diesel engines

Fuel ◽  
2019 ◽  
Vol 258 ◽  
pp. 116133 ◽  
Author(s):  
Xinyi Zhou ◽  
Tie Li ◽  
Yijie Wei ◽  
Sichen Wu
Keyword(s):  
Diesel Engines ◽  
Spray Combustion ◽  
Low Speed ◽  
Combustion Processes

LES Analysis of Mixture Formation and Combustion Processes in a Diesel Spray

2011 ◽  
Vol 5 (2) ◽  
pp. 102-111 ◽  
Author(s):  
Hirokazu Kojima ◽  
Hiroshi Kawanabe ◽  
Takuji Ishiyama
Keyword(s):  
Diesel Spray ◽  
Mixture Formation ◽  
Combustion Processes

Simulation and Modeling of Compression Stroke in Diesel Engines

2016 ◽  
Vol 823 ◽  
pp. 309-314
Author(s):  
Mahran Dawwa ◽  
Iulia Luninita Baboiu
Keyword(s):  
Diesel Engines ◽  
Simulation And Modeling ◽  
Mixture Formation ◽  
Compression Stroke ◽  
Modeling Process ◽  
Ideal Gases ◽  
Engine Combustion ◽  
Computational Fluid Dynamics Cfd ◽  
Temperature And Pressure ◽  
Thermodynamic Equations

The objective of this study is to simulate the compression stroke in diesel engines by using computational fluid dynamics (CFD), and to model the compression stroke by using thermodynamic equations for Ideal gases and polynomial function that fits thermodynamic data of JANAF tables. The most important parameters to be simulated and modeled during the compression stroke are temperature and pressure of cylinder gases because of their important effects on mixture formation inside the engine combustion chamber. The simulation part will be performed using ANSYS ICE software. The modeling part will be performed using a MATLAB program composed by the corresponding author. Simulation and modeling process will be carried out between the intake valve close (IVC) and top dead center (TDC), the results of simulation and modeling will be compared and discussed.

Numerical Study of Combustion Processes and Pollutant Formation in HSDI Diesel Engines

2004 ◽  
Author(s):  
Hoojoong Kim ◽  
Namil Heo ◽  
Yongmo Kim ◽  
Je-Hyung Lee ◽  
Joon Kyu Lee
Keyword(s):  
Diesel Engines ◽  
Numerical Study ◽  
Pollutant Formation ◽  
Combustion Processes
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