Correlation Between the Liquid Fuel Properties Density, Viscosity and Surface Tension and the Drop Sizes Produced by an SI Engine Pintle-Type Port Fuel Injector

1994 ◽  
Author(s):  
Paul Williams ◽  
Paul Beckwith
Keyword(s):  
Surface Tension ◽  
Liquid Fuel ◽  
Fuel Properties ◽  
Fuel Injector ◽  
Si Engine

scholarly journals Effect of Partially Premixed Fuel on Performance and Emission Characteristics of Compression Ignition (CI) Engine

2019 ◽  
Vol 8 (4S2) ◽  
pp. 163-166
Keyword(s):  
Diesel Engine ◽  
New Technology ◽  
Control Unit ◽  
Injection Timing ◽  
Emission Characteristics ◽  
Compression Ignition ◽  
Fuel Injector ◽  
Si Engine ◽  
Performance And Emission ◽  
Partially Premixed

In this world, the population is increased and the number of vehicles increased. Not only population the pollution is increased lot by vehicles in the world harmful pollutant is realized from the vehicles like CO, HC, NOx and smoke particulates. It is inevitable to find some new technology, which increases the better performance and emission characteristics. Partially premixed compression ignition (PCCI) is the best technology for the reducing of harmful pollution in the vehicle, which uses the diesel as fuel it, gives the advantages of both CI and SI engine. This paper investigates the performance and emission characteristics of partially premixed diesel engine. Diesel engine has two injectors of port fuel injector (PFI) and direct injector (DI) to inject the fuel in different timing and electrical control unit (ECU) passes the power to PFI; it can control the injection timing and increases the fuel content from the fuel pump. The main aim in this paper is studied is effect of partially premixed ratio, performance of engine and emission characteristics of diesel engine

scholarly journals Rapid Liquid Fuel Mixing for Lean-Burning Combustors: Low-Power Performance

2001 ◽  
Vol 123 (3) ◽  
pp. 574-579 ◽  
Author(s):  
M. Y. Leong ◽  
C. S. Smugeresky ◽  
V. G. McDonell ◽  
G. S. Samuelsen
Keyword(s):  
Low Power ◽  
Gas Turbine ◽  
Liquid Fuel ◽  
Direct Injection ◽  
Fuel Injector ◽  
Power Performance ◽  
Lean Burn ◽  
Engine Operation ◽  
Turbine Engine ◽  
Lean Direct Injection

Designers of advanced gas turbine combustors are considering lean direct injection strategies to achieve low NOx emission levels. In the present study, the performance of a multipoint radial airblast fuel injector Lean Burn injector (LBI) is explored for various conditions that target low-power gas turbine engine operation. Reacting tests were conducted in a model can combustor at 4 and 6.6 atm, and at a dome air preheat temperature of 533 K, using Jet-A as the liquid fuel. Emissions measurements were made at equivalence ratios between 0.37 and 0.65. The pressure drop across the airblast injector holes was maintained at 3 and 7–8 percent. The results indicate that the LBI performance for the conditions considered is not sufficiently predicted by existing emissions correlations. In addition, NOx performance is impacted by atomizing air flows, suggesting that droplet size is critical even at the expense of penetration to the wall opposite the injector. The results provide a baseline from which to optimize the performance of the LBI for low-power operation.

Assessing Fuel Property Effects on Cavitation and Erosion Propensity Using a Computational Fuel Screening Tool

2019 ◽  
Author(s):  
Gina M. Magnotti ◽  
Sibendu Som
Keyword(s):  
Liquid Fuel ◽  
Screening Tool ◽  
Performance Metrics ◽  
Fuel Injection ◽  
Fuel Properties ◽  
Fuel Vapor ◽  
Strong Negative Correlation ◽  
Initial Development ◽  
Fuel Property ◽  
Pressure Surface

Abstract To advance compression ignition combustion strategies, researchers have evaluated fuel property effects and their impact on achieving higher efficiencies and lower emissions levels relative to current capabilities. Within the Department of Energy’s Co-Optima initiative, there has been a recent focus on understanding the influence of fuel properties on fuel injection performance. To help identify candidate fuels that can meet desired injector performance metrics, a computational fuel screening tool is under development that can link fuel properties with the tendency of a given fuel to cavitate and lead to cavitation-induced erosion. In the initial development of this tool, five liquid fuel properties were selected to represent candidate fuels, namely density, viscosity, vapor pressure, surface tension, and heat of vaporization. A design of experiments methodology was employed to generate a set of pseudo-fuel cases, which can represent the main effects and interactions among the fuel properties and be related to cavitation erosion predictions. Large eddy simulations were performed using a mixture modeling approach to predict the cavitation and erosion propensity of these pseudo-fuels in terms of the mean fuel vapor mole fraction and stored impact energy from repeated cloud collapse events. The low order regression models generated from this study revealed the importance of liquid fuel density on cavitation formation, whereas liquid viscosity was found to have a strong negative correlation with erosion severity. The surrogate models were then used in the fuel screening tool to rank the cavitation and erosion tendency of four candidate single-component fuels: methyl decanoate, iso-octane, ethanol and n-dodecane. While the fuel screening tool was not able to quantitatively predict the cavitation and erosion response metrics, the tool was able to accurately rank the relative cavitation and erosion propensity of the four fuels. Overall, ethanol and iso-octane were observed to produce the highest levels of cavitation and erosion, respectively.

Investigation of a Novel Fuel Injection Technology Aimed to Reduce Cold-Start Emissions in SI Engines

2002 ◽  
Author(s):  
Brian T. Reese ◽  
Yann G. Guezennec ◽  
Miodrag Oljaca
Keyword(s):  
Fuel Injection ◽  
Cold Start ◽  
Operating Conditions ◽  
The Novel ◽  
Fuel Injector ◽  
Si Engine ◽  
Fuel Droplets ◽  
Si Engines ◽  
Atomization Characteristics ◽  
Injection Technology

A novel fuel atomization device (Nanomiser™) was evaluated under laboratory conditions with respect to its ability to reduce SI engine cold-start hydrocarbon emissions. First, comparisons between the level of atomization using the conventional, pintle-type fuel injector and the novel atomizer were carried out using flow visualization in a spray chamber and particle size distribution. The novel atomizer is capable of producing sub-micron fuel droplets, which form an ultra-fine mist with outstanding non-wetting characteristics. To capitalize on these atomization characteristics, this device was compared to a conventional fuel injector in a small, two-cylinder, SI engine under a number of operating conditions. Results show a slightly enhanced combustion quality and lean limit under warm operating conditions and a dramatic reduction in unburned HC emission under cold operating conditions, with cold emissions with the Nanomiser™ matching those with a conventional injector under fully warm conditions.

Performance Evaluation of an IC Engine (SI) Using Biogas as Fuel With Petrol Blends: A Case Study

Solar Energy ◽  
2004 ◽  
Author(s):  
Md. Masood ◽  
S. N. Mehdi ◽  
Syed Yousufuddin
Keyword(s):  
Liquid Fuel ◽  
Renewable Energy Sources ◽  
Calorific Value ◽  
Animal Manure ◽  
Performance Study ◽  
Si Engine ◽  
Ic Engine ◽  
Carbon Dioxide Co2 ◽  
Natural Decomposition

Biogas is the term used for the gas made from the natural decomposition of Organic (plant or animal) materials. It is Produced when the materials are digested by bacteria in a situation where little or no air is present (anaerobic digestion). Biogas consisting of approximately two-thirds methane (CH4) and one-third carbon dioxide (CO2) burns well and can be used to provide energy in the form of heat or electricity. The main practical sources of biogas are sewage, animal manure and the organic materials in household refuse or industrial waste. Like other renewable energy sources, biogas is a stored form of solar energy (since it originates from plants which used the sun’s energy to grow). An experimental evaluation was carried out to compare the performance of an IC engine (SI) Using Biogas as fuel blended with petrol in different proportions to that of only petrol as fuel. The performance study carried out in a four cylinder SI engine shows that this can better be used as an automotive fuel with a comparatively much lesser cost than the conventional fuels. The results show that because of the low calorific value of biogas the thermal efficiency is lesser than that of petrol and remains same at low and high out puts. Same is the case for volumetric efficiency. Biogas is an excellent and economical fuel for both petrol and diesel engines. However the power obtained is less than that of liquid fuel. Biogas is a cheaper and better fuel for cooking, lighting and running engines.

Combustion Characteristics and Performance Increase of an LPG-SI Engine with Liquid Fuel Injection System

2009 ◽  
Author(s):  
Norifumi Mizushima ◽  
Susumu Sato ◽  
Yasuhiro Ogawa ◽  
Toshiro Yamamoto ◽  
Umerujan Sawut ◽  
...  
Keyword(s):  
Liquid Fuel ◽  
Fuel Injection ◽  
Combustion Characteristics ◽  
Injection System ◽  
Fuel Injection System ◽  
Si Engine ◽  
And Performance
Sign in / Sign up

Export Citation Format

Share Document