scholarly journals Optimization of Injection Pressure and Compression Ratio of Vcr Ci Engine Fueled with Waste Plastic Oil Blended with Diesel

2020 ◽  
Vol 10 (3) ◽  
pp. 2585-2600
Author(s):  
Dr. Srinivas Kommana et al., Dr. Srinivas Kommana et al., ◽  
Keyword(s):  
Compression Ratio ◽  
Injection Pressure ◽  
Waste Plastic ◽  
Waste Plastic Oil ◽  
Ci Engine

Optimization of engine operating parameters suitable for punnai oil application in CI engine using Grey relational method

2018 ◽  
Vol 30 (4) ◽  
pp. 732-751 ◽  
Author(s):  
S K Narendranathan ◽  
K Sudhagar ◽  
R Karthikeyan
Keyword(s):  
Air Temperature ◽  
Compression Ratio ◽  
Grey Relational Analysis ◽  
Injection Pressure ◽  
Operating Parameters ◽  
Injection Timing ◽  
Relational Analysis ◽  
Ci Engine ◽  
Grey Relational ◽  
Ci Engines

This work is intended to apply neat form of punnai oil of higher proportion in the existing CI engines with modified operating parameters. It uses neat punnai oil of 50% by volume in compression ignition (CI) engine as diesel–punnai oil blend. The more influencing engine operating parameters such as injection pressure, injection timing, and intake air temperature, and the compression ratio were used for the optimization. A combined Taguchi and Grey relational analysis was used for designing the experiment and optimizing the operating parameters. Based on the methods used, 18 experimental trials were chosen, and their results were fed into the Grey relational analysis. Results of the Grey analysis show that the trial number 13 was performed well. The levels used in this trial such as injection pressure (250 bar), injection timing (25°bTDC), compression ratio (18.5), and intake air temperature (80°C) were identified as the optimum levels of operating parameters for admitting 50% of punnai oil in CI engine. This work had used MiniTab software for designing Taguchi and Grey relational analysis.

Experimental Analysis of Low Heat Rejection Engine Powered by Blends of Waste Plastic Oil and Diesel

2019 ◽  
Vol 11 (2) ◽  
Author(s):  
V. Rathinam ◽  
S. Ramkumar ◽  
M. Parthasarathy
Keyword(s):  
Diesel Fuel ◽  
Fossil Fuels ◽  
Solid Waste Management ◽  
Flame Temperature ◽  
The Other ◽  
Waste Plastic ◽  
Performance And Emission ◽  
Waste Plastic Oil ◽  
Ci Engine ◽  
Conventional Diesel Fuel

The energy consumption throughout the world has been increasing every day. The fossil fuels are the main energy source for automobiles. The increase in the usage rate of fossil fuel proves to be a major source of greenhouse gases and air pollution. On the other hand, in the form of waste plastic, a good source of energy is dumped without any usage. Since plastic materials are non-degradable, this leads to a considerable problem in solid waste management. Waste plastic oil can be obtained through pyrolysis process of waste plastic. The physical and thermal properties of the waste plastic oil (WPO) are near to the diesel fuel. The waste plastic oil can be directly used as a fuel for unmodified CI engine. This reduces plastic waste, and it acts as a viable source of energy. In this experiment, different blends such as WPO20, WPO40, WPO60, WPO80 and neat waste plastic oil are used as a fuel in the CI engine. The performance and emission results have shown that WPO20 produces better results than the other blends of waste plastic oil. So, this blend is used for further research. Many researchers have analysed the engine characteristics using WPO as a sole fuel in CI engine, but no research has been done so far with WPO as a fuel in LHR engine. LHR engines have various advantages such that they may increase the adiabatic flame temperature, reduce the heat loss, which in turn increases the brake thermal efficiency, and reduce HC and CO emissions. The LHR engine is tested with WPO20 as a fuel, and its performance and emission values are compared with a conventional diesel fuel engine. The engine vibration is found to be reduced while using LHR engine rather than the conventional diesel fuel engine. The experiment results from LHR engine show improved BTE and reduced emissions, such as CO and UBHC, while there is a slight increase in NOx.

scholarly journals Characterization and Impact of Waste Plastic Oil in a Variable Compression Ratio Diesel Engine

Energies ◽  
2021 ◽  
Vol 14 (8) ◽  
pp. 2230
Author(s):  
Khatha Wathakit ◽  
Ekarong Sukjit ◽  
Chalita Kaewbuddee ◽  
Somkiat Maithomklang ◽  
Niti Klinkaew ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Physicochemical Properties ◽  
Compression Ratio ◽  
Diesel Fuel ◽  
Combustion Characteristics ◽  
Chemical Compositions ◽  
Waste Plastic ◽  
Variable Compression Ratio ◽  
Waste Plastic Oil ◽  
Variable Compression

The characterization of pyrolysis oil obtained from mixed waste plastics and its utilization in a compression ignition engine were investigated. The chemical compositions and physicochemical properties of distilled waste plastic oil (WPO) and crude waste plastic oil (CWPO) were analyzed. The experiment was conducted with a variable compression ratio diesel engine at various loads and compression ratios to evaluate combustion characteristics, exhaust emissions, and engine performance. The experimental results show that CWPO contains the highest percentage of carbon atoms in the C4–C11 group, while WPO contains the highest percentage of carbon atoms in the C12–C20 group, similar to the main compositions of diesel fuel. According to the preliminary study in chemical compositions and physicochemical properties, WPO and diesel fuel were selected for the engine test at different compression ratios of 16, 17, and 18 and different engine operating loads of 25%, 50%, and 75% of maximum engine torque at an engine speed of 1500 rpm. It was found that increasing the engine operating load and the compression ratio tends to increase the brake thermal efficiency. Increasing the compression ratio results in a significantly shorter delay time in a combustion state. A lower cetane index and a higher percentage of long chain carbon compounds (C12–C20) could be the main factors affecting higher NOx, CO, and HC emissions with the combustion characteristics of WPO, compared to diesel fuel. The disadvantage of emissions by the use of WPO can be alleviated when the engine is running at maximum load and a high compression ratio.

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