scholarly journals Influence of physicochemical properties of gasoline on the formation of DISI engine fuel injector deposits

2021 ◽  
Author(s):  
Zbigniew Stępień
Keyword(s):  
Physicochemical Properties ◽  
Test Procedure ◽  
Engine Fuel ◽  
Fuel Injector ◽  
Research Results ◽  
Fuel Density

This paper describes the results of an engine study of the tendency for fuel injector deposits to form by gasolines of various compositions. Since the factors promoting the formation of fuel injector deposits in DISI engines have, in many cases, been insufficiently identified they require further research and investigation work, which was the greatest motivation for undertaking this project. The latest CEC F-113-KC test procedure for the most damaging deposits in DISI engine injectors was used for this purpose. The research results obtained in the framework of the conducted project indicated T90, aromatic and olefinic hydrocarbons, sulphur, ethanol, DVPE, IBP and fuel density as the most important factors causing the increase in the tendency for deposits to form on the injectors of SI type DISI engines.

THE PHYSICOCHEMICAL PROPERTIES OF GLUCOMANNAN FLOUR OF AMORPHOPHALLUS PAEONIIFOLIUS CULTIVALED IN THUA THIEN HUE

2014 ◽  
pp. 87-92
Author(s):  
Thi Hoai Nguyen ◽  
Thi Van Thi Tran ◽  
Trung Hieu Le ◽  
Thi Mai Huong Vo
Keyword(s):  
Physical Chemistry ◽  
Physicochemical Properties ◽  
Key Words ◽  
Quality Standards ◽  
Spectroscopic Methods ◽  
Research Results ◽  
Beneficial Effects ◽  
Laser Analysis ◽  
Set Up

Background: There are many beneficial effects such as reducing the risk of obesity, diabetes, hyperlipidemia and hypercholesterolemia from Amorphophallus sp. This reports are research results of physicochemical properties of glucomannan flour from tubers of Amorphophallus paeoniifolius cultivated in Thua Thien Hue. Materials: Glucomannan flour from tubers of Amorphophallus paeoniifolius (Dennst) Nicolson – Araceae cultivated in Thua Thien Hue. Method: Identify the quantity and physicochemical properties by many methods such as using enzymes, chemistry, physical chemistry, spectroscopic methods, laser analysis. Results: Identified starch and glucomannan quantity, physicochemical properties and indicators of microbiological of glucomannan flour. Conclusion: From the achieved results set up quality standards of glucomannan flour from tubers of Amorphophallus paeoniifolius cultivated in Thua Thien Hue. Key words: Glucomannan, starch, β-amylase.

scholarly journals Droplet Size and Spray Dispersion Characteristics of an Impingement-Jet Type Jet Engine Fuel Injector

2008 ◽  
Vol 74 (746) ◽  
pp. 2213-2220
Author(s):  
Takahiro TAMURA ◽  
Mikiya ARAKI ◽  
Hideshi YAMADA ◽  
Seiichi SHIGA ◽  
Shigeru HAYASHI ◽  
...  
Keyword(s):  
Droplet Size ◽  
Engine Fuel ◽  
Dispersion Characteristics ◽  
Fuel Injector ◽  
Jet Engine ◽  
Impingement Jet

Simulation of Liquid Jet Breakup of a Swirl-Type Fuel Injector for Automobile Engines

2007 ◽  
Author(s):  
Eiji Ishii ◽  
Toru Ishikawa ◽  
Yoshiyuki Tanabe
Keyword(s):  
Water Column ◽  
Grid Method ◽  
Particle Method ◽  
Engine Fuel ◽  
Fuel Injector ◽  
Free Surfaces ◽  
Scale Free ◽  
Multi Scale ◽  
Jet Breakup ◽  
Automobile Engines

To simulate multi-scale free surfaces, we developed a hybrid particle/grid method by which the free surfaces within sub-grid regions are simulated by the particle method, and other regions are simulated with the grid method. The particle method uses two types of particles to model gas and liquid fluids in order to simulate the interaction between them. We tested the new method on fragmentation of a water column, and the predicted configurations of the water column are consistent with measurements of Koshizuka and Oka. We also simulated the fuel spray near the outlet of an automobile-engine fuel injector and found that this method qualitatively simulated the breakup of the liquid film.

scholarly journals Deposition Formation Effect of Biodiesel in a Diesel Engine Fuel Injector

2021 ◽  
Vol 9 (8) ◽  
pp. 1057-1060
Keyword(s):  
Diesel Engine ◽  
Alternative Energy ◽  
Fossil Fuels ◽  
Research Work ◽  
Energy Resource ◽  
Petroleum Products ◽  
Energy Resources ◽  
Engine Fuel ◽  
Fuel Injector

To establish a long-term sustainability of biodiesel to fulfill the quest for renewable fuel resources for the countries has low or no fossil fuels reserves. The energy resource meets to its limited capacity, alternative new energy resources must be explored such as the introduction of biodiesel as an alternative energy resources of petroleum products. The present research work is a 90-hour long-term endurance test performed with B30 sample (biodiesel 30% + 70% diesel) fueled with modified investigation performance, sound pressure level and engine durability. Special attention has been given to certain phenomena affecting the life of the engine, the formation of deposits and its performance. Experimental results of this research work demonstrated that the modified diesel engine could be efficiently performed with the B30 fuel sample.

scholarly journals Fuel Injector Testing Through Development of a New Test Rig

2019 ◽  
Vol 8 (9) ◽  
pp. 2904-2909
Keyword(s):  
Fuel Injection ◽  
Cylinder Liner ◽  
Heating System ◽  
Injection Rate ◽  
Engine Fuel ◽  
Exhaust Manifold ◽  
Fuel Injector ◽  
Test Rig ◽  
Recirculation System ◽  
Fuel Injection Rate

A modified version of fuel injector with higher injection capacity has been developed. To achieve this, the injector plunger diameter is increased to 11mm from current 9.5mm. A new test rig is developed to understand the functioning of the injector due to the changes incorporated. The new test rig is designed to test injector operation without burning the fuel. Since internal combustion is not present an external arrangement is required to run the engine. This is achieved through a 3-phase induction motor, which is coupled with the crankshaft of the engine. The injected fuel is collected form the cylinders and it is then recirculated. A fuel cooling circuit is also incorporated along with the fuel recirculation system to maintain the temperature of fuel at inlet of fuel pump. An oil heating system is installed in the test rig to maintain the viscosity of the oil by heating it. The required systems for driving the engine, fuel cooling and oil heating are implemented as per the design. The test is conducted on a 19 L diesel engine. Parts which are not required for this test like piston, piston rings, intake and exhaust manifold etc are removed from the engine. And the cylinder liner is blocked from below using a plate to facilitate the collection of injected fuel. Engine is made to run using the motoring rig at the rated speed of 1500 rpm for a duration of 250 hours. Instrumented push tubes are used to measure the push tube load. Push tube load is observed to be in the range of 2700 to 3100 lbf, which is high as compared to the earlier model of the injector. Fuel injection rate is obtained from the fuel collected from the cylinders. And the average fuel injection rate is observed as 0.116 to 2.35 kg/min. Thus, the increase in plunger diameter has led to an increase in fuel injection rate

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