Effects of preheating of crude palm oil (CPO) on injection system, performance and emission of a diesel engine

2002 ◽  
Vol 27 (3) ◽  
pp. 339-351 ◽  
Author(s):  
S. Bari ◽  
T.H. Lim ◽  
C.W. Yu
Keyword(s):  
Diesel Engine ◽  
Palm Oil ◽  
System Performance ◽  
Injection System ◽  
Crude Palm Oil ◽  
Performance And Emission

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.

Experimental Investigation of Emissions Characteristics of Small Diesel Engine Fuelled by Blended Crude Palm Oil

2014 ◽  
Vol 660 ◽  
pp. 462-467
Author(s):  
Amir Khalid ◽  
M.D. Anuar ◽  
Azwan Sapit ◽  
Azahari Razali ◽  
Bukhari Manshoor ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Palm Oil ◽  
Oxidation Stability ◽  
Combustion Process ◽  
High Viscosity ◽  
Exhaust Emission ◽  
Crude Palm Oil ◽  
Performance And Emission ◽  
Emission Parameter ◽  
Oxygenated Fuel

Biodiesel is an alternative, decomposable and biological-processed fuel that has similar characteristics with mineral diesel which can be used directly into diesel engines. Crude palm oil (CPO) is one of the vegetable oil that has potential for use as a fuel in diesel engine. However, Biodiesel is also an oxygenated fuel and more density, viscosity meaning it contains influences the emissions production during burning process. Despite years of improvement attempts, the key issue in using crude palm oil fuels is oxidation stability, high viscosity and much oxygen comparing to diesel fuel. Thus, the improvement of performance and emission exhausted from biodiesel fuels is urgently required to meet the future performance and emission regulations. Purpose of this study is to explore how significant the effect of biodiesel blends on the exhaust emission with different speed. The engine speed was varied from 1500-2500 rpm and CPO blending ratio from 5-15 vol% (B5-B15).The emission parameter have been tested in term of opacity, hydrocarbon (HC), nitrogen oxide (NOX), carbon dioxide (CO2 ) and oxygen (O2). Increased blends of biodiesel ratio is found to enhance the combustion process, resulting in decreased the HC emissions and also other exhaust emission element. The improvement of combustion process is expected to be strongly influenced by oxygenated fuel in biodiesel content.

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.

Analysis of pre-heated crude palm oil, palm oil methyl ester and its blends as fuel in a diesel engine

2015 ◽  
Vol 37 (5) ◽  
pp. 495-500 ◽  
Author(s):  
B. Deepanraj ◽  
P. Lawrence ◽  
R. Sivashankar ◽  
V. Sivasubramanian
Keyword(s):  
Diesel Engine ◽  
Methyl Ester ◽  
Palm Oil ◽  
Oil Palm ◽  
Crude Palm Oil

Performance deterioration and durability issues while running a diesel engine with crude palm oil

2002 ◽  
Vol 216 (9) ◽  
pp. 785-792 ◽  
Author(s):  
S Bari ◽  
C W Yu ◽  
T H Lim
Keyword(s):  
Diesel Engine ◽  
Palm Oil ◽  
Engine Performance ◽  
Cylinder Liner ◽  
Diesel Emissions ◽  
Maximum Power ◽  
Crude Palm Oil ◽  
Carbon Deposits ◽  
Injection Pump ◽  
Performance Deterioration

Short-term performance tests using crude palm oil (CPO) as fuel for a diesel engine showed CPO to be a suitable substitute, with a peak pressure about 5 per cent higher and an ignition delay about 3° shorter compared with diesel. Emissions of NO and CO were about 29 and 9 per cent higher respectively for CPO. However, prolonged use of CPO as fuel caused the engine performance to deteriorate. After 500 h cumulative running with CPO, the maximum power was reduced by about 20 per cent and the minimum brake specific fuel consumption (b.s.f.c.) was increased by about 26 per cent. Examination of the different parts after the engine was dismantled revealed heavy carbon deposits in the combustion chamber; traces of wear on the piston rings, the plunger and the delivery valve of the injection pump; slight scuffing of the cylinder liner; and uneven spray from the nozzles. The affected parts were installed in a new identical engine one by one to evaluate the performance of each respectively. Tests revealed that the main reason for engine performance deterioration was ‘valve sticking’, caused by carbon deposits on the valve seats and stems. This resulted in leakage during the compression and power strokes and a reduced effective compression ratio and subsequently affected the power and fuel economy. Valve sticking alone contributed about 18 and 23 per cent to the deterioration in maximum power and minimum b.s.f.c. respectively.

scholarly journals Crude palm oil as a complementary fuel for power generation in Amazonia: diesel engine performance, emissions, and economic assessment

2019 ◽  
Vol 42 ◽  
pp. e43882
Author(s):  
Omar Seye ◽  
Rubem Cesar Rodrigues Souza ◽  
Ramon Eduardo Pereira Silva ◽  
Robson Leal da Silva
Keyword(s):  
Power Generation ◽  
Diesel Engine ◽  
Internal Combustion Engine ◽  
Palm Oil ◽  
Combustion Engine ◽  
Engine Performance ◽  
Internal Combustion ◽  
Nox Emissions ◽  
Crude Palm Oil ◽  
Diesel Cycle

This paper evaluates internal combustion engine performance parameters (Specific Fuel Consumption and engine torque) and pollutant emissions (O2, CO, and NOX), and also, provide an assessment of economic viability for operation in Amazonas state. Power supply to the communities in the Amazon region has as characteristics high costs for energy generation and low fare. Extractive activities include plenty of oily plant species, with potential use as biofuel for ICE (Diesel cycle) to obtain power generation together with pollutant emission reduction in comparison to fossil fuel. Experimental tests were carried out with five fuel blends (crude palm oil) and diesel, at constant angular speed (2,500 RPM – stationary regime), and four nominal engine loads (0%, 50%, 75%, and 100%) in a test bench dynamometer for an engine-driven generator for electrical-power, 4-Stroke internal combustion engine, Diesel cycle. Main conclusions are: a) SFC and torque are at the same order of magnitude for PO-00 (diesel) and PO-xx at BHP50/75/100%; b) O2 emissions show consistent decreasing behavior as BHP increases, compatible to a rich air-fuel ratio (λ > 1) and, at the same BHP condition, O2 (%) is slightly lower for higher PO-xx content; c) The CO emissions for PO-00 consistently decrease while the BHP increases, as for PO-xx those values present a non-linear behavior; at BHP75%-100_loads, CO emissions are higher for PO-20 and PO-25 in comparison to PO-00; d) The overall trend for NOX emissions is to increase, the higher the BHP; In general, NOx emissions are lower for PO-xx in comparison to PO-00, except for PO-10 which presents slightly higher values than PO-00 for all BHP range; e) Assessment on-trend costs indicates that using palm oil blends for Diesel engine-driven generators in the Amazon region is economically feasible, with an appropriate recommendation for a rated power higher than 800 kW.

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