The Performance and Emissions Investigations of Compression Ignition (CI) Engine Using Algal Biomass as an Antioxidant Additive in Coconut and Karanja Methyl Esters

2019 ◽  
Vol 90 (5) ◽  
pp. 925-931
Author(s):  
Ganesh Babu Katam ◽  
Veeresh Babu Alur ◽  
Madhu Murthy Kotha ◽  
Ganesh S. Warkhade
Keyword(s):  
Algal Biomass ◽  
Methyl Esters ◽  
Compression Ignition ◽  
Antioxidant Additive ◽  
Performance And Emissions ◽  
Ci Engine

Performance and Emissions Analysis of Partially Pre-Mixed Charge Compression Ignition Combustion

2018 ◽  
Author(s):  
Charu Vikram Srivatsa ◽  
Jonathan Mattson ◽  
Christopher Depcik
Keyword(s):  
Compression Ratio ◽  
Fuel Injection ◽  
Load Condition ◽  
Compression Ignition ◽  
Cylinder Pressure ◽  
High Compression Ratio ◽  
High Compression ◽  
Performance And Emissions ◽  
Ci Engine ◽  
Load Conditions

In order to investigate the performance and emissions behavior of a high compression ratio Compression Ignition (CI) engine operating in Partially Premixed Charge Compression Ignition (PPCI) mode, a series of experiments were conducted using a single cylinder naturally aspirated engine with a high-pressure rail fuel injection system. This included a moderately advanced direct injection strategy to attempt PPCI combustion under low load conditions by varying the injection timing between 25° and 35° Before Top Dead Center (BTDC) in steps of 2.5°. Furthermore, during experimentation the fuel injection pressure, engine speed, and engine torque (through variance of the fuel injection quantity) were kept constant. In-cylinder pressure, emissions, and performance parameters were measured and analyzed using a zero-dimensional heat release model. Compared to the baseline conventional 12.5° BTDC injection, in-cylinder pressure and temperature was higher at advanced timings for all load conditions considered. Additionally, NOx, PM, CO, and THC were higher than conventional results at the 0.5 N-m load condition. While PM emissions were lower, and CO and THC emissions were comparable to conventional injection results at the 1.5 N-m load condition between 25° and 30° BTDC, NOx emissions were relatively high. Hence, there was limited success in beating the NOx-PM tradeoff. In addition, since Start of Combustion (SOC) occurred BTDC, the resulting higher peak combustion pressures restricted the operating condition to lower loads to ensure engine safety. As a result, further investigation including Exhaust Gas Recirculation (EGR) and/or variance in fuel Cetane Number (CN) is required to achieve PPCI in a high compression ratio CI engine.

Simulation and Experimental Investigation of Guide Vane Length to Improve the Performance of a Diesel Engine Run With Biodiesel

2016 ◽  
Vol 138 (11) ◽  
Author(s):  
S. Bari ◽  
Idris Saad
Keyword(s):  
Diesel Engine ◽  
Combustion Engine ◽  
Guide Vane ◽  
Flow Characteristics ◽  
Engine Performance ◽  
Compression Ignition ◽  
Guide Vanes ◽  
Performance And Emissions ◽  
Ci Engine ◽  
Engine Performance And Emissions

This research investigated the effect of guide vanes into the intake runner of a diesel engine run with higher viscous biodiesel to enhance the in-cylinder intake airflow characteristics. First, simulation of an internal combustion engine base model was done. Guide vanes of various lengths were developed and imposed into the intake runner to investigate the airflow characteristics. Based on the simulation results, five guide vanes models of 8, 10, 12, 14, and 16 mm length were constructed and tested on a compression ignition (CI) engine run with biodiesel. According to the experimental results of engine performance and emissions, it was found that guide vanes of 12 mm length showed the highest number of improvements with 14 mm and 10 mm length showed the second and third highest number of improvements, respectively. Therefore, this research concluded that guide vanes successfully improved the in-cylinder air flow characteristics to improve the mixing of higher viscous biodiesel with air resulting in better performances of the engines than without vanes.

scholarly journals The Influence of Formulation Ratio and Emulsifying Settings on Tri-Fuel (Diesel–Ethanol–Biodiesel) Emulsion Properties

Energies ◽  
2019 ◽  
Vol 12 (9) ◽  
pp. 1708 ◽  
Author(s):  
M. Mukhtar N. A. ◽  
Abd Rashid Abd Aziz ◽  
Ftwi Y. Hagos ◽  
M. M. Noor ◽  
Kumaran Kadirgama ◽  
...  
Keyword(s):  
Methyl Esters ◽  
Compression Ignition ◽  
Emulsion Droplets ◽  
Control Factors ◽  
Two Factors ◽  
Digital Microscope ◽  
Ci Engine ◽  
The Stability ◽  
Density Dynamic ◽  
Ci Engines

In this study, an alternative fuel for compression ignition (CI) engines called tri-fuel emulsion was prepared using an ultrasonic emulsifier. The objective of the study is to investigate the effect of emulsifying settings and formulation ratio on the physicochemical properties of tri-fuel emulsions. Design of experiment (DOE) with the two-level factorial design was employed to analyze the effect of emulsifying settings such as time, amplitude, and cycle along with the variation ratio of tri-fuel emulsion components as control factors. Numbers of responses identified were important parameters that may contribute to microexplosion phenomenon in CI engine. Analysis of variance (ANOVA) was carried out for each response, and the results indicated that density, dynamic viscosity, surface tension, and average droplet size were influenced by specific preparation control factors. Furthermore, interaction among the control factors was found to affect the responses as well. Interaction means the effect of two factors together is different than what would be expected from each factor separately. Besides, the stability of the tri-fuel emulsion was observed for three months. Furthermore, a qualitative approach with a multiobjective lens digital microscope revealed the geometry of freshly made dispersed tri-fuel emulsion droplets. Microscopic examination on tri-fuel emulsion droplets has shown that the dispersed ethanol capsulated within diesel with the help of biodiesel is similar to a water in diesel emulsion and is dissimilar to commercial diesel mixed with fatty acid methyl esters found in the market.

scholarly journals Engine Performance and Emission Characteristics of a Direct Injection Diesel Engine Fuelled with 1- Hexanol as a Fuel Additive in Mahua Seed Oil Biodiesel Blends

2017 ◽  
Vol 13 (2) ◽  
Keyword(s):  
Seed Oil ◽  
Methyl Esters ◽  
Engine Performance ◽  
Alternative Fuel ◽  
Fuel Additive ◽  
Emission Characteristics ◽  
Compression Ignition ◽  
Compression Ignition Engine ◽  
Performance And Emission ◽  
Performance And Emissions

The increasing industrialization and motorization of the world has led to a steep rise for the demand of petroleum products. Petroleum based fuels are obtained from limited reserves. In the wake of this situation, there is an urgent need to promote use of alternative fuel which must be technically feasible, economically competitive, environmentally acceptable and readily available. In the present study, Mahua seed oil methyl esters (MSOME) were prepared through transesterification and evaluation of important physico-chemical properties was carried and the properties were found within acceptable limits. A compression ignition engine was fuelled with three blends of MSOME with diesel (10, 20 and 30% on volume basis) and various performance and emission characteristics were evaluated and results compared with baseline data of diesel. The results suggest the BTE was higher for MSOME blends and BSFC, HC and smoke opacity were lower as compared to diesel fuel. This may be attributed to improved combustion for MSOME are oxygenated fuels and have higher cetane number. The values of NOx were found almost nearer for all blends as compared to diesel. Addition of 1-hexanol (Ignition improver) 0.5%, 1% volume ratios to the optimum blend (MSOME30) for evaluating the engine performance and emissions parameters and the main purpose of ignition improver is to improve combustion process and reduction in engine emissions. Finally results shows that performance and emissions have been to justify the potentiality of the mahua seed oil methyl esters as alternative fuel for compression ignition engines without any modifications

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