Air-fuel Mixing and Fuel Flow Velocity Modeling of Multi Holes Injector Nozzle on CNG Marine Engine

Self Cite

Abstractmodification of single-fuel diesel engine into dual-fuel diesel engine has been done by researchers to solve the problem of depletion petroleum reserves. Even the problem petroleum reserves are projected to be exhausted in the next 50 years. Gas-Oil fuel engine focus on solar-CNG as a fuel. Explanation of the difference in the fuel ratio of diesel engines with Gas-Oil fuel diesel engines has considerable differences. The factors that are discussed here are the factors of mixing air and fuel. The amount of fuel in the Gas-Oil fuel diesel engine causes an increase in the gas fuel mass flow rate (CNG), although with the addition of fuel gas, the mass flow rate of diesel oil is reduced. In this paper, the Gas-Oil fuel engines research and development fueled using solar-CNG are highlighted to keep the performance of the engine. Modification focused on air intake valve to give maximum turbulent flow ratio and effect on increasing Gas-Oil fuel engine performance. The high activities for future Gas-Oil fuel engines research and development to meet future Gas-Oil fuel engine solar-CNG is recorded in the paper.

Section: Gas-oil Fuel Diesel Enginementioning

confidence: 99%

“…This is because turbulent flow increases the surface (area of burning) so as to increase heat transfer to gas and air mixture on Gas-Oil fuel engine. Turbulence in the combustion chamber is also able to improve engine efficiency [24][25][26].…”

Section: Gas-oil Fuel Diesel Enginementioning

confidence: 99%

Technical Review of Fin Addition Analysis of Air Intake Valve on Gas-Oil Fuel Engine

Semin

Rfc²,

Cahyono

et al. 2018

Self Cite

“…The damage demage of elbow fitting is due to the hight flow velocity affecting thewall of elbow. It is commonly known by the corrosion erosion or corrosion due to the very rapid fluid flow affecting the metal wall [4,[17][18][19][20].…”

mentioning

confidence: 99%

Damage Analysis of Elbow Fitting at Condenser Air Conditioning Cooling System

Prastowo¹,

Arief²,

Fansyuri

2017

Abstract elbow fittings is one type of fitting on the piping installation that serves to change the flow direction. With the sudden flow of changes, it will affect the physical condition of the elbow. The flow changes in the elbow will result in changes of flow velocity that affect wall of elbow, the condition will cause erosion corrosion phenomenon. Erosion corrotion is a type of corrosion that uses a mechanical process through the relative movement of the flow and metal. Corrosion erosion can also be caused by impingment corrotion or very rapid flow movement. This study aims to determine the cause of damage elbow by using a CFD simulation and troubleshooting by adding a Vortex Generator or a installed disturber system in the pipeline installation and simulating it again. From the results of research conducted that elbow damage caused by high flow velocity that concerns the outer elbow. The addition of Vortex Generator is proven to be used to reduce excessive flow velocity on erosion-corroded parts. According to the results of the investigation the placement of the most efficient vortex generator if placed at a distance of 0.1 R from elbow inlet.

“…The technique concerned with introducing water into engine combustion chamber was proposed by Prof. B. Hopkinson in 1913, to make better internal cooling of the gas engine and to increase the engine output. Furthermore, the technique was developed to improve the thermal efficiency and reduce exhaust emissions, or used as the safety fuel [5][6][7][8][9][10][11][12][13][14][15].…”

mentioning

confidence: 99%

Effect of Water Fuel Emulsion on Performance and NOx Emissions of Diesel Engine

Cahyono¹,

Fathallah²,

Semin³

et al. 2017

Self Cite

Abstract NOx one of the exhaust emissions is harmful to human health. Many methods can reduce NOx emissions, one of them is water in fuel emulsion. By using experiment, research has been conducted in surfactant selection. The results of experiment show 4 surfactant, which is best used to the diesel engine is tween 80 and span 80. This experiment needs some water contents variation emulsifier with 10%, 15%, and 20%. In this different variation of water is very influential on performance and NOx emissions. By using water fuel emulsion of 10% in SFOC has been increase 216,2 g/Kwh or 11.6% compared to Pertamina Dex of fuel. However, the water used in fuel emulsion of 15% and 20% in SFOC increased to compare 10% emulsion. The effect of water use in fuel emulsion has been reduce NOx emissions. Water in fuel emulsion has been decrease 50.5%. Generally, the emission level of a diesel engine that using water in fuel emulsion has been improved until entering on Tier 3 specification of IMO rules.