scholarly journals POMDME as an Alternative Pilot Fuel for Dual-Fuel Engines: Optical Study in a RCEM and Application in an Automotive Size Dual-Fuel Diesel Engine

2018 ◽  
Author(s):  
Aleš Srna ◽  
Christophe Barro ◽  
Kai Herrmann ◽  
Fabio Möri ◽  
Richard Hutter ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Dual Fuel ◽  
Optical Study ◽  
Pilot Fuel ◽  
Dual Fuel Engines

Diagnosing the effects of pilot fuel quality on exergy terms in a biogas run dual fuel diesel engine

2012 ◽  
Vol 10 (1) ◽  
pp. 77 ◽  
Author(s):  
Bibhuti B. Sahoo ◽  
Ujjwal K. Saha ◽  
Niranjan Sahoo
Keyword(s):  
Diesel Engine ◽  
Dual Fuel ◽  
Fuel Quality ◽  
Pilot Fuel

scholarly journals Study on the Performance Analysis of Dual Fuel Engines on the Medium Speed Diesel Engine

2020 ◽  
Vol 68 (1) ◽  
pp. 163-174 ◽  
Author(s):  
Muhammad Arif Budiyanto ◽  
Agus Sunjarianto Pamitran ◽  
Hadi Tresno Wibowo ◽  
Fahd Naufal Murtado
Keyword(s):  
Diesel Engine ◽  
Performance Analysis ◽  
Dual Fuel ◽  
Medium Speed ◽  
Dual Fuel Engines

scholarly journals Evaluation Dual Fuel Engine Fuelled With Hydrogen and Biogas as Secondary Fuel

2019 ◽  
Vol 8 (2) ◽  
pp. 1902-1905
Keyword(s):  
Diesel Engine ◽  
Thermal Efficiency ◽  
Dominant Role ◽  
Single Mode ◽  
Dual Fuel ◽  
Nox Emissions ◽  
Brake Thermal Efficiency ◽  
Pilot Fuel ◽  
Present Context ◽  
Inlet Manifold

The present energy scenario hydrogen fuel plays a dominant role in the power generation. Due to its unique characteristics of an extensive range of flammability, high flame speed, and diffusivity. In this present investigation, the diesel engine is converted into dual-fuel mode devoid of major conversions of the engine. The tests are performed on a dual-fuel mode and investigated the efficiency, emissions, and combustion features of the diesel engine. In the present context, hydrogen and biogas are injected from the inlet manifold as subsidiary fuel and diesel are injected as pilot fuel. The gaseous fuel injected in two different flow rates they are, 3 litres per minute (lpm), and 4lpm. The results from the experimentation revealed that the diesel with 4 lpm of hydrogen shows the 31.11 % enhancement of brake thermal efficiency but it shows 4.14% higher NOX emissions when compared with the pure diesel. But it shows. At the same time diesel with 4 lpm of Biogas exhibits 15.90% enhancement of brake thermal efficiency and 8.96% decrease in the NOX emissions in contrast to that of the single-mode of fuel with diesel.

Utilization of CNG in dual fuel engine: Review

2020 ◽  
pp. 206-220
Author(s):  
Rahul Sharma ◽  
Amit Pal ◽  
N.A. Ansari
Keyword(s):  
Diesel Engine ◽  
Petroleum Products ◽  
Nano Particles ◽  
Dual Fuel ◽  
Alternative Source ◽  
Compressed Natural Gas ◽  
Complete Combustion ◽  
Comparable Performance ◽  
Pilot Fuel ◽  
Efficient Combustion

Petroleum products have been utilized for the power generation in diesel engine. As the fossils fuels are depleting at a faster rate and from the environmental viewpoint, it is necessary to use alternative source of energy that could replace fossils fuels in existing engines. Because of the aforementioned reasons, numerous scientists have discovered different solutions for the substitution of petroleum diesel, one of the promising techniques is the utilization of gaseous fuel's viz., compressed natural gas (CNG) as primary fuel under dual fuel mode in a customized diesel engine. Most of the engine scientists have observed that by utilizing CNG in modified engine, leads to significant reduction in exhaust emissions owing to complete combustion at higher loads along with comparable performance in comparison to neat diesel. However, the performance of engine was improved substantially with the addition of nano particles in pilot fuel. Nevertheless, for long term benefits of CNG in conventional engine economic aspects should also be considered. Moreover, the performance can be optimized by modifying injection parameters as well as better mixture formation responsible for efficient combustion. Overall, it can be concluded that CNG fuelled CI engine can be utilized for higher performance with reduced exhalations.

Improving the Performance of a Biogas Powered Dual Fuel Diesel Engine Using Emulsified Rice Bran Biodiesel as Pilot Fuel Through Adjustment of Compression Ratio and Injection Timing

2015 ◽  
Vol 137 (9) ◽  
Author(s):  
Bhaskor J. Bora ◽  
Ujjwal K. Saha
Keyword(s):  
Diesel Engine ◽  
Rice Bran ◽  
Compression Ratio ◽  
Droplet Diameter ◽  
Dual Fuel ◽  
Injection Timing ◽  
Two Phase ◽  
Water Emulsion ◽  
Hydrophilic Lipophilic Balance ◽  
Pilot Fuel

Emulsification is one of the proven techniques to control the pollutants of the diesel engines. The present work attempts to explore the effect of injection timing (IT) of pilot fuel and compression ratio (CR) for an emulsified rice bran biodiesel (RBB)–biogas powered dual fuel diesel engine. A two-phase stable water emulsion of rice bran methyl ester has been prepared by optimizing the factors such as water content (5% and 10%), surfactants (3%), and hydrophilic lipophilic balance (HLB) values (4.3, 5, and 6). The stability of the emulsions is determined on the basis of measurement of mean droplet diameter and stability test. For experimentation, a 3.5 kW single cylinder, direct injection (DI), water cooled, variable CR diesel engine is converted into a biogas run dual fuel diesel engine by connecting a venturi gas mixer at the inlet manifold. A set of combinations comprising CRs of 18, 17.5, and 17, and ITs of 23 deg, 26 deg, 29 deg, and 32 deg before top dead centers (BTDC) at different loading conditions are considered. The investigation demonstrates a maximum brake thermal efficiency (BTE) of 23.62% along with a liquid fuel replacement of 82.22% at pilot fuel IT of 29 deg BTDC and CR of 18. For the same combination, CO and HC emissions are found to be least in all the test cases.

Influence of Dual Fuel Twin Injection on Diesel Engine Combustion and Emission Characteristics

2013 ◽  
Vol 768 ◽  
pp. 206-212 ◽  
Author(s):  
K. Senthil Kumar ◽  
R. Thundil Karuppa Raj
Keyword(s):  
Diesel Engine ◽  
Diesel Fuel ◽  
Release Rate ◽  
Exhaust Emission ◽  
Dual Fuel ◽  
Emission Characteristics ◽  
Pilot Injection ◽  
Crank Angle ◽  
Engine Combustion ◽  
Pilot Fuel

The objective of this study is to investigate the feasibility of two-stage injection on combustion and exhaust emission characteristics in diesel (main fuel) ethanol (pilot fuel) fuelled single cylinder diesel engine. The pressure crank angle and net heat release rate diagrams revealed that increase in the ethanol pilot quantity causes an increase in the ignition delay in the pilot combustion and hence the main combustion due to diesel fuel is slightly influenced by the ethanol pilot fuel. The increase in the pilot injection decreases the NOx considerably. The concentration of soot emissions also decreases with increase in pilot injection. The CO emissions increases with increase in pilot injection and a slight increase in HC emission is observed.

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.

Sign in / Sign up

Export Citation Format

Share Document