Effects of EGR rate on the combustion and emission characteristics of diesel-palm oil-ethanol ternary blends used in a CRDI diesel engine with double injection strategy

2021 ◽  
pp. 117530
Author(s):  
Donghui Qi ◽  
Li Ma ◽  
Ru Chen ◽  
Xiaoxuan Jin ◽  
Manyao Xie
Keyword(s):  
Diesel Engine ◽  
Palm Oil ◽  
Emission Characteristics ◽  
Ternary Blends ◽  
Injection Strategy ◽  
Double Injection

scholarly journals Effects of the Multiple Injection Strategy on Combustion and Emission Characteristics of a Two-Stroke Marine Engine

Energies ◽  
2021 ◽  
Vol 14 (20) ◽  
pp. 6821
Author(s):  
Ju-Hwan Seol ◽  
Van Chien Pham ◽  
Won-Ju Lee
Keyword(s):  
Single Injection ◽  
Simulation Software ◽  
Emission Characteristics ◽  
Cylinder Pressure ◽  
Multiple Injection ◽  
Injection Strategy ◽  
Marine Engine ◽  
Injection Mode ◽  
Double Injection ◽  
Simulation Results

This paper presents research on the effects of the multiple injection strategies on the combustion and emission characteristics of a two-stroke heavy-duty marine engine at full load. The ANSYS FLUENT simulation software was used to conduct three-dimensional simulations of the combustion process and emission formations inside the engine cylinder in both single- and double-injection modes to analyze the in-cylinder pressure, temperature, and emission characteristics. The simulation results were then compared and showed good agreement with the measured values reported in the engine’s sea-trial technical reports. The simulation results showed reductions in the in-cylinder pressure and temperature peaks by 6.42% and 12.76%, while NO and soot emissions were reduced up to 24.16% and 68%, respectively, in the double-injection mode in comparison with the single-injection mode. However, the double-injection strategy increased the CO2 emission (7.58%) and ISFOC (23.55%) compared to the single-injection. These are negative effects of the double-injection strategy on the engine that the operators need to take into consideration. The results were in line with the literature reviews and would be good material for operators who want to reduce the engine exhaust gas emission in order to meet the stricter IMO emission regulations.

Performance and Emission Characteristics of Diesel Engine Running on Blended Palm Oil

2013 ◽  
Vol 795 ◽  
pp. 164-169 ◽  
Author(s):  
A.M. Iqbal ◽  
Z.A. Zainal ◽  
M. Mazlan ◽  
Mohd Mustafa Al Bakri Abdullah ◽  
M.S. Salim
Keyword(s):  
Diesel Engine ◽  
Palm Oil ◽  
Energy Demand ◽  
Fossil Fuel ◽  
Energy Content ◽  
High Energy ◽  
Emission Characteristics ◽  
Performance And Emission ◽  
Suitable Climate ◽  
New Energy

Rapid increasing of industrialization and motorization has led arising of petroleum and energy demand. This pursue a new energy blends to cater the depletion of fossil fuel and the environmental degradation condition. Malaysia is blessed, which has suitable climate to plant alternative fuel (palm oil) and become one of the largest exporters to the world. Palm oil in its refined form as cooking oil has high energy content which can be adopted as an alternative to the petroleum based fuel. This paper evaluates the performance and emission characteristics of refined palm oil (RPO) as a fuel to the diesel engine. Palm oil and its blends composition with 20%, 40%, 60% as well as pure palm oil (100%) and diesel were tested separately under various engine loads. Five series of tests data on each type of fuel were analyzed and compared. Moreover, by increasing the percentage of RPO in blends would lead a character of higher percentage in density and viscosity. Studied revealed that the small percentage of RPO composition promises a good thermal efficiency together with the emission released.

Influence of n-butanol-diesel-PODE3-4 fuels coupled pilot injection strategy on combustion and emission characteristics of diesel engine

Fuel ◽  
2019 ◽  
Vol 236 ◽  
pp. 313-324 ◽  
Author(s):  
Haozhong Huang ◽  
Zhongju Li ◽  
Wenwen Teng ◽  
Chenzhong Zhou ◽  
Rong Huang ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Emission Characteristics ◽  
Pilot Injection ◽  
Injection Strategy

Numerical investigation of the effect of two-stage injection strategy on combustion and emission characteristics of a diesel engine

2018 ◽  
Vol 227 ◽  
pp. 634-642 ◽  
Author(s):  
Hanzhengnan Yu ◽  
Xingyu Liang ◽  
Gequn Shu ◽  
Yuesen Wang ◽  
Xiuxiu Sun ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Numerical Investigation ◽  
Emission Characteristics ◽  
Two Stage ◽  
Injection Strategy

scholarly journals Comparative Evaluation on Combustion and Emission Characteristics of a Diesel Engine Fueled with Crude Palm Oil Blends

2021 ◽  
Vol 11 (23) ◽  
pp. 11502
Author(s):  
Jun Cong Ge ◽  
Sam Ki Yoon ◽  
Jun Hee Song
Keyword(s):  
Diesel Engine ◽  
Vegetable Oil ◽  
Palm Oil ◽  
Combustion Engine ◽  
Engine Performance ◽  
Alternative Fuel ◽  
Emission Characteristics ◽  
Crude Palm Oil ◽  
Maximum Heat ◽  
Performance And Emission

Vegetable oil as an alternative fuel for diesel engine has attracted much attention all over the world, and it is also expected to achieve the goal of global carbon neutrality in the future. Although the product after transesterification, biodiesel, can greatly reduce the viscosity compared with vegetable oil, the high production cost is one of the reasons for restricting its extensive development. In addition, based on the current research on biodiesel in diesel engines, it has been almost thoroughly investigated. Therefore, in this study, crude palm oil (CPO) was directly used as an alternative fuel to be blended with commercial diesel. The combustion, engine performance and emissions were investigated on a 4-cylinder, turbocharged, common rail direct injection (CRDI) diesel engine fueled with different diesel-CPO blends according to various engine loads. The results show that adding CPO to diesel reduces the maximum in-cylinder pressure and maximum heat release rate to 30 Nm and 60 Nm. The most noteworthy finding is that the blend fuels reduce the emissions of hydrocarbons (HC), nitrogen oxides (NOx) and smoke, simultaneously. On the whole, diesel fuel blended with 30% CPO by volume is the best mixing ratio based on engine performance and emission characteristics.

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