Experimental Investigation of Applying Raw Fuel Injection Technique for Reducing Methane in Aftertreatment of Diesel Dual Fuel Engines Operating under Medium Load Conditions

2011 ◽  
Author(s):  
Anirut Noipheng ◽  
Napumee Waitayapat ◽  
Tanet Aroonsrisopon ◽  
Ekathai Wirojsakunchai ◽  
Thummarat Thummadetsak ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Fuel Injection ◽  
Dual Fuel ◽  
Injection Technique ◽  
Dual Fuel Engines ◽  
Load Conditions

Injection Strategies for Operational Improvement of Diesel Dual Fuel Engines under Low Load Conditions

2009 ◽  
Author(s):  
Tanet Aroonsrisopon ◽  
Mongkol Salad ◽  
Ekathai Wirojsakunchai ◽  
Krisada Wannatong ◽  
Somchai Siangsanorh ◽  
...  
Keyword(s):  
Dual Fuel ◽  
Low Load ◽  
Operational Improvement ◽  
Dual Fuel Engines ◽  
Load Conditions ◽  
Injection Strategies

Experimental investigation on upstream fuel injection technique of RBCC scramjet mode

2019 ◽  
Vol 154 ◽  
pp. 450-457 ◽  
Author(s):  
Jiang Li ◽  
Gen Zhu ◽  
Oupeng Yan ◽  
Weipeng Li ◽  
Shikong Zhang ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Fuel Injection ◽  
Injection Technique

Burn Rate Analysis of an Ethanol-Gasoline, Dual Fueled, Spark Ignition Engine

2008 ◽  
Author(s):  
M. Mittal ◽  
G. Zhu ◽  
H. J. Schock ◽  
T. Stuecken ◽  
D. L. S. Hung
Keyword(s):  
Fuel Injection ◽  
Direct Injection ◽  
Spark Ignition ◽  
Spark Ignition Engine ◽  
Injection System ◽  
Dual Fuel ◽  
Polytropic Index ◽  
Light Load ◽  
Method Model ◽  
Load Conditions

An experimental study is performed to investigate the combustion characteristics of an ethanol-gasoline, dual fueled, single cylinder spark ignition (SI) engine. A dual fuel injection system with both Direct-Injection (DI) and Port-Fuel-Injection (PFI) is used in this work. The performance of PFI-E85 and DI-gasoline, and PFI-gasoline and DI-E85 systems is presented. E85 is a blend of 85% ethanol and 15% gasoline by volume. In each test, the percentage of E85 is varied from 100 (0% gasoline) to 0 (100% gasoline) to compare the various cases. PFI-gasoline and DI-gasoline (PFI & DI-gasoline) results are also presented to provide a baseline for comparison. The cycle-to-cycle variability is presented using coefficient of variation (COV) of indicated mean effective pressure (IMEP). Mass fraction burned (MFB) and burn duration are determined from the analysis of measured in-cylinder pressure data. The well known Rassweiler and Withrow method (Model 1), with a new linear model for the polytropic index, is used to obtain the MFB curves. The differences are presented for the net pressure method (Model 2) to evaluate the burn rates. It is found that combustion is faster with the increase in PFI percentage for all the three setups with dual fuel injection. The PFI-E85 and DI-gasoline system showed that the burn duration decreases significantly with the increase in PFI percentage; however, the PFI-gasoline and DI-E85 system showed only slight differences with the increase in PFI percentage. Model 2 showed good agreement with Model 1 at high load conditions; however, it predicts slower combustion at light load conditions.

Single Cylinder Testing of a High-Pressure Electronic Pilot Fuel Injector for Low NOx Emission Dual Fuel Engines: Part I—Baseline, Feasibility, and Comparative Testing

1990 ◽  
Vol 112 (3) ◽  
pp. 413-421 ◽  
Author(s):  
J. Workman ◽  
G. M. Beshouri
Keyword(s):  
Fuel Injection ◽  
Waste Water Treatment ◽  
Injection System ◽  
Dual Fuel ◽  
Nox Emissions ◽  
Fuel Injector ◽  
Pilot Fuel ◽  
Dual Fuel Engines ◽  
Current Minimum ◽  
Feasibility Test

Current dual fuel engines utilizing standard mechanical (Bosch type) fuel injection systems set to 5–6 percent pilot delivery do not appear capable of reducing NOx emissions much below the current minimum of 4 g/bhp-h without incurring substantial penalties in efficiency and operability. A prototype Electronic Pilot Fuel Injector (EPFI) was designed that overcomes the shortcomings of the mechanical injection system, consistently delivering 3 percent or less pilot at pressures as high as 20,000 psi. The EPFI was installed and tested in one cylinder of a standard production dual fuel engine operating at a waste water treatment facility. A feasibility test confirmed that the engine would indeed operate satisfactorily at 2.9 percent pilot. Comparisons with baseline data revealed the EPFI yielded a 45 percent reduction in NOx emissions with a 3 percent or greater improvement in efficiency. Further optimization of the system, discussed in Part II, indicates that even greater reductions in NOx emissions can be obtained without incurring a penalty in fuel consumption.

Experimental Investigation of Hydrogen Fuel Injection in DI Dual Fuel Diesel Engine

2007 ◽  
Author(s):  
N. Saravanan ◽  
G. Nagarajan ◽  
C. Dhanasekaran ◽  
K. M. Kalaiselvan
Keyword(s):  
Experimental Investigation ◽  
Diesel Engine ◽  
Fuel Injection ◽  
Dual Fuel ◽  
Hydrogen Fuel

scholarly journals ABB’s Advanced EV Burner — A Dual Fuel Dry Low NOx Burner for Stationary Gas Turbines

1998 ◽  
Author(s):  
Christian Steinbach ◽  
Thomas Ruck ◽  
Jonathan Lloyd ◽  
Peter Jansohn ◽  
Klaus Döbbeling ◽  
...  
Keyword(s):  
Gas Turbines ◽  
Fuel Injection ◽  
Vortex Breakdown ◽  
Steam Injection ◽  
Flame Stabilization ◽  
Liquid Fuels ◽  
Dual Fuel ◽  
Load Range ◽  
Ev Burner ◽  
Load Conditions

A dual fuel burner has been developed to meet stringent NOx goals without the use of water or steam injection. This combustion system is based on the proven ABB EV burner dry low NOx technology and uses the same type of aerodynamic vortex breakdown flame stabilization. A more advanced aerodynamic design improves the quality of the fuel air mixture for both gaseous and liquid fuels. The design of the liquid fuel injection and the fuel-air-mixture preparation is described in this paper. Fuel air mixture homogeneity was improved with the help of experimental and numerical tools. This way an optimization in fuel atomizer design was possible. Distinct differences in fuel distribution were observed for different designs of pressure atomizers. Combustion tests of the burner were performed at pressures up to 20 bars. The NOx levels measured under gas turbine full load conditions are <25 vppm using oil no. 2 and <10 vppm using natural gas. These results highlight the potential for achieving similar combustion low emission performance for gaseous and liquid fuels near perfect lean premix conditions. Operating parameters and test results at part load conditions are discussed as well in this paper. The wide operating range of the burner in the full premix mode restricts the need for pilot application or burner staging to low load (<50 %) conditions. This allows for low emissions on NOx, CO and UHC in the entire load range.

Knock Prediction in Industrial Dual Fuel Engines Using a Two-Zone Combustion Model With Consideration of Chemical Kinetics

2008 ◽  
Author(s):  
Ahmed Al-Sened ◽  
Hesameddin Safari ◽  
Mojtaba Keshavarz ◽  
Ghasem Javadirad
Keyword(s):  
Diesel Fuel ◽  
Fuel Injection ◽  
Chemical Reactivity ◽  
Gaseous Fuel ◽  
Combustion Model ◽  
Dual Fuel ◽  
Injection Timing ◽  
Boost Pressure ◽  
Fuel Mass ◽  
Dual Fuel Engines

Knock is well recognized as a destructive phenomenon to be avoided when running dual fuel engines. Typically, it occurs at high loads and high ambient temperatures and its onset has always been difficult to predict, particularly where multiple fuels are present. In a dual fuel engine, knock can occur from either the diesel or the gaseous fuel and it is recognised that the ratio of diesel fuel mass to gaseous fuel mass is an important index in determining which type of knock is predominant. This paper describes the development of a two-zone predictive model for the onset of knock in a dual fuel engine. Prediction of spark knock onset is the main objective of present work. A 9-step short mechanism with 11 chemical species, developed specifically for modelling dual fuel operation, is used to determine the chemical reactivity of the end-gas zone. The contribution of pilot diesel fuel combustion is taken into account by a heat release model. Chemical equilibrium is assumed for the burned gas zone. Simulation results predict the point of knock-limited BMEP and its dependency on operating parameters such as air intake temperature, boost pressure, start of pilot fuel injection timing and compression ratio. The results were first validated against some published engine analysis data and also some in-house performance prediction data. Secondly, a known dual-fuel development engine was simulated. Finally, the performance of an engine which had been converted from diesel to dual fuel during its service life was modeled but commercial constraints prevent the identification of this engine within this paper. However, good agreement with existing performance data was demonstrated in all these cases.

Sign in / Sign up

Export Citation Format

Share Document