scholarly journals Stress analysis of the cylinder block of a small compression ignition engine

2019 ◽  
Vol 179 (4) ◽  
pp. 259-263
Author(s):  
Jerzy WAWRZYCZEK ◽  
Tomasz KNEFEL
Keyword(s):  
Stress Analysis ◽  
Cylinder Head ◽  
Engine Block ◽  
Cylinder Block ◽  
Small Displacement ◽  
Compression Ignition ◽  
Main Bearing ◽  
Compression Ignition Engine ◽  
Combustion Pressure

The work contains calculations to determine the deformation and stress in the block of a currently produced small displacement compression ignition engine. It is also an attempt to introduce some modifications to reduce the mass of the calculated component. In the first step, based on measurements, the model of the engine block was developed. The Autodesk Inventor 2016 software was used. Two additional components were also designed to provide the block closure: a simplified cylinder head and an integrated main bearing support. All elements were imported to the Siemens NX 12 program. The calculations were carried out for different cylinders and different values of the combustion pressure. An attempt was made to introduce some modifications to reduce the weight of the calculated element.

Analytical Evaluation of Heat Flow Pattern in Biodiesel Operated Engine Cylinder

2017 ◽  
Author(s):  
Chidiebere Nwaiwu ◽  
Kevin Nwaigwe ◽  
Nnamdi Ogueke
Keyword(s):  
Temperature Distribution ◽  
Cylinder Head ◽  
Palm Kernel ◽  
Cylinder Liner ◽  
Compression Ignition ◽  
Compression Ignition Engine ◽  
Ansys Fluent ◽  
Matlab Code ◽  
Head Section ◽  
Biodiesel Fuels

There has been a global search for alternative fuels that are environmentally friendly to replace and or compliment the conventional fossil fuels used in running engines. This is in line with the global action to reduce CO2 emissions hence ameliorating the effect of climate change. Biodiesel fuels have been adjudged to be clean energy with minimal environmental pollution during combustion. Hence, biodiesel fuels for running compression ignition engines have been developed from various feedstocks such as vegetable oils, animal fat, and waste or used cooking oils. The properties of these biodiesels have been reported to be dependent on the feedstock type and therefore vary according to the source feedstock. In carrying out this present study on the effects of utilising biodiesel fuel on the compression ignition engine, a numerical study of temperature distribution in the cylinder liner of biodiesel-powered compression ignition engine is presented. Biodiesel produced from palm kernel oil is used. Eight nodes in the cylinder liner spanning the top section of the liner, midpoint and the interface between the liner and the block were used as data source as it is established that sharp-edged points are most likely regions for thermal stress. Of the eight nodes selected, four were edge nodes and the other four were nodes at the interface with varying conditions. Model equations used for the study were developed and subsequently transformed using the finite difference method. Numerical solutions were obtained from computer codes written in MATLAB programming language. The obtained results from this code were compared to results obtained from commercial software (ANSYS FLUENT) for same geometry and boundary conditions. Results on the cylinder liner showed steady state temperatures were reached in about five minutes using both the MATLAB code and ANSYS FLUENT and both results showed a similar trend of temperature distribution in the radial direction. However, the MATLAB code showed higher temperatures at the upper section of the liner material as compared to the midpoint of the liner whereas ANSYS FLUENT showed the midpoint section to possess maximum temperatures as compared to the cylinder head section. Both results agree with the lower section having least temperature distribution. Further analyses were carried out on the midpoint of the cylinder and the cylinder head section and factors responsible for the discrepancies discussed. The outcome of this study presents palm kernel based biodiesel as an alternative fuel in cylinder engines while highlighting sections of the engine that require design attention in terms of heat flux and engine stability.

Second Paper: Instantaneous Heat Transfer Rates to the Cylinder Head Surface of a Small Compression-Ignition Engine

1970 ◽  
Vol 185 (1) ◽  
pp. 976-987 ◽  
Author(s):  
W. J. D. Annand ◽  
T. H. Ma
Keyword(s):  
Heat Transfer ◽  
Cylinder Head ◽  
Time Derivative ◽  
Working Fluid ◽  
Compression Ignition ◽  
Compression Ignition Engine ◽  
Local Conditions ◽  
Transfer Rates ◽  
Head Surface ◽  
Thin Film Thermocouple

Measurements of instantaneous heat transfer rates from the working fluid to the cylinder head of a small open-chamber, four-stroke, compression-ignition engine have been made at five points on the surface, using a new form of thin-film thermocouple. These observations demonstrate that flux magnitude and the form of flux variation during the cycle depend greatly on local conditions. Some of the observed phenomena are explained qualitatively. Finally, some results are presented of an analysis of fluxes averaged over all five locations, in terms of the bulk mean properties of the working fluid. It is shown that some compensation for the non-steady nature of the situation may be given by adding to the usual type of quasi-steady relation a term involving the time derivative of the bulk mean temperature.

Numerical Study of the Effect of a Biodiesel on the Cylinder Liner of Compression Ignition Engine

2017 ◽  
Author(s):  
Chidiebere F. Nwaiwu ◽  
Olisaemeka C. Nwufo ◽  
Johnson O. Igbokwe ◽  
Nnamdi V. Ogueke ◽  
Emmanuel E. Anyanwu
Keyword(s):  
Temperature Distribution ◽  
Diesel Fuel ◽  
Cylinder Head ◽  
Numerical Study ◽  
Cylinder Liner ◽  
Maximum Temperature ◽  
Compression Ignition ◽  
Compression Ignition Engine ◽  
Liner Material ◽  
Head Section

A numerical study of temperature distribution in the cylinder liner of biodiesel-powered compression ignition engine is presented. The mathematical model equations developed were based on heat transfers in the cylinder liner and subsequently transformed using the finite difference method. Numerical solutions were obtained from computer codes written in MATLAB programming language. A biodiesel produced from Nigerian physic nut oil was used in the study. The result was compared with that obtained for conventional diesel fuel. The results revealed that the cylinder head section of the liner material presented higher temperature distribution compared to the oil sump section of the liner. Over a twelve-minute time range, the liner attained steady state with Jatropha-based biodiesel, recording a maximum temperature of 873.1°C. Conventional diesel recorded the lower temperature of 784.3°C. Results also showed that the cylinder head section of the liner material closest to the combustion chamber experienced the greatest temperature rise in comparison to other parts of the liner. These results show that though there are lots of publications confirming that a compression ignition engine previously running on diesel fuel can run on biodiesel fuel or its blend with diesel, there is a need for a further critical study on the development of engine parts like the cylinder liner.

Stress analysis of the connecting rod of compression ignition engine

2020 ◽  
Vol 33 ◽  
pp. 3722-3728
Author(s):  
S. Seralathan ◽  
Sai Viswanath Mitnala ◽  
RV. Sahith Kumar Reddy ◽  
Inturi Guru Venkat ◽  
Dadi Reddy Tejeswar Reddy ◽  
...  
Keyword(s):  
Stress Analysis ◽  
Compression Ignition ◽  
Connecting Rod ◽  
Compression Ignition Engine

Pollutant emissions investigation in a compression ignition engine during warm-up time

2017 ◽  
Author(s):  
Naiara Lima Costa ◽  
Ramon Eduardo Pereira Silva ◽  
Letícia Schneider Ferrari
Keyword(s):  
Pollutant Emissions ◽  
Compression Ignition ◽  
Compression Ignition Engine ◽  
Warm Up

Improvement of a Lightweight Aluminium Cylinder Block Design Using Finite Element Stress Analysis

2020 ◽  
Vol 12 (05) ◽  
Author(s):  
Mohamad A Arsah ◽  
◽  
Syed M A Syed Mohd Yusoff Sobbry ◽  
Tengku N A Tuan Kamaruddin ◽  
Azmi Osman ◽  
...  
Keyword(s):  
Finite Element ◽  
Stress Analysis ◽  
Block Design ◽  
Cylinder Block ◽  
Finite Element Stress Analysis ◽  
Finite Element Stress

scholarly journals An Experimental Investigation on the Effect of Ferrous Ferric Oxide Nano-Additive and Chicken Fat Methyl Ester on Performance and Emission Characteristics of Compression Ignition Engine

Symmetry ◽  
2021 ◽  
Vol 13 (2) ◽  
pp. 265
Author(s):  
Ameer Suhel ◽  
Norwazan Abdul Rahim ◽  
Mohd Rosdzimin Abdul Rahman ◽  
Khairol Amali Bin Ahmad ◽  
Yew Heng Teoh ◽  
...  
Keyword(s):  
Methyl Ester ◽  
Ferric Oxide ◽  
Fossil Fuels ◽  
Specific Energy Consumption ◽  
Experimental Results ◽  
Compression Ignition ◽  
Gas Temperature ◽  
Compression Ignition Engine ◽  
Performance And Emission ◽  
Chicken Fat

In recent years, industries have been investing to develop a potential alternative fuel to substitute the depleting fossil fuels which emit noxious emissions. Present work investigated the effect of ferrous ferric oxide nano-additive on performance and emission parameters of compression ignition engine fuelled with chicken fat methyl ester blends. The nano-additive was included with various methyl ester blends at different ppm of 50, 100, and 150 through the ultrasonication process. Probe sonicator was utilized for nano-fuel preparation to inhibit the formation of agglomeration of nanoparticles in base fuel. Experimental results revealed that the addition of 100 ppm dosage of ferrous ferric oxide nanoparticles in blends significantly improves the combustion performance and substantially decrease the pernicious emissions of the engine. It is also found from an experimental results analysis that brake thermal efficiency (BTE) improved by 4.84%, a reduction in brake specific fuel consumption (BSFC) by 10.44%, brake specific energy consumption (BSEC) by 9.44%, exhaust gas temperature (EGT) by 19.47%, carbon monoxides (CO) by 53.22%, unburned hydrocarbon (UHC) by 21.73%, nitrogen oxides (NOx) by 15.39%, and smoke by 14.73% for the nano-fuel B20FFO100 blend. By seeing of analysis, it is concluded that the doping of ferrous ferric oxide nano-additive in chicken fat methyl ester blends shows an overall development in engine characteristics.

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