Fuel Injection System Design, Analysis and Testing Using Bond Graph as an Efficient Modeling Tool

1996 ◽  
Author(s):  
Vilmar Aesoy ◽  
Hallvard Engja ◽  
Leif Arne Skarboe
Keyword(s):  
System Design ◽  
Fuel Injection ◽  
Bond Graph ◽  
Design Analysis ◽  
Injection System ◽  
Fuel Injection System ◽  
Modeling Tool ◽  
Efficient Modeling

scholarly journals The application of gas dissolved in fuel with a view to improve the mechanism of spraying

2005 ◽  
Vol 120 (1) ◽  
pp. 4-18
Author(s):  
Władysław KOZAK ◽  
Maciej BAJERLEIN ◽  
Jarosław MARKOWSKI
Keyword(s):  
High Pressure ◽  
Process Control ◽  
System Design ◽  
Gaseous Phase ◽  
Fuel Injection ◽  
Combustion Process ◽  
Fuel Oil ◽  
Injection System ◽  
Fuel Injection System ◽  
Fuel Stream

In the non-equilibrium states of a solution, formed as a result of dissolving gas in a liquid, the gaseous phase is spontaneously released from the solution. This process has a volumetric character and at the appropriate kinetics it is strong enough to be accompanied by the effervescence (bubbling) of the liquid. The authors have undertaken an attempt to evaluate the possibility of applying this process for improving the fuel spraying mechanism in the diesel engines. This paper presents the first part of their work. In this paper presents a concept of the improvement of spraying by adding gas to fuel oil, its dissolving at a high pressure and the use of the effect which accompanies its release during the injection of fuel, for improving the spraying mechanism accompanying its release during the injection of fuel??. The mechanism of spraying improvement has been explained and the general requirements listed, which have to be fulfilled by a fuel injection system design to make the use of gas possible. An evaluation of energetic changes of the fuel stream caused by the presence of gas has been made and the potential possibilities of the extension of the combustion process control, mentioned in the conclusions

Study on Wear-Preventing of Needle Valve in Fuel Injection System Mounted on DME Engine

2011 ◽  
Vol 228-229 ◽  
pp. 1057-1062
Author(s):  
Xin Rong Wen ◽  
Guang De Zhang ◽  
Wei Hua Wang ◽  
Xie Lu ◽  
Sun Jing
Keyword(s):  
Dynamic Stability ◽  
Structural Design ◽  
Fuel Injection ◽  
Dynamic Instability ◽  
Calculation Model ◽  
The Other ◽  
Injection System ◽  
Needle Valve ◽  
Fuel Injection System ◽  
Theoretical Support

The purpose of this paper is to provide theoretical support for the structural design to prevent the wear of needle. The actual wear of the orientation part of the needle in scrapped needles was researched. The presented results showed that the main reason to the wear of the orientation part of needle was the dynamic instability and the abrasives enter into the surface of orientation part which increases the wear, and that the calculation model of dynamic stability was proposed to prevent the wear of needle. This model was a pressure rod, one end of which was fixed, the other was free, and the two ends were pressed on axial force which changes with time. Besides, the classic formula of dynamic stability of pressure rod was changed rationally, so as to correspond with the calculation model. It will play a part in preventing the wear of needle.

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