Determination of vibration characteristics of a compression ignition engine operated by hydrogen enriched diesel and biodiesel fuels

The paper presents the initial design of the four-cylinder CI engine head and the analysis of the strength of the head with the use of FEM. The article covers: general assumptions of the designed head, analytical design calculations, three-dimensional head model and timing system components using CAD. The scope of calculations using the head calculation model includes strength calculations and determination of the amount of strain caused by the given load.

Download Full-text

Analytical Evaluation of Heat Flow Pattern in Biodiesel Operated Engine Cylinder

ASME 2017 11th International Conference on Energy Sustainability ◽

10.1115/es2017-3378 ◽

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.

Download Full-text

Determination of effects of various alcohol additions into peanut methyl ester on performance and emission characteristics of a compression ignition engine

Fuel ◽

10.1016/j.fuel.2014.02.037 ◽

2014 ◽

Vol 126 ◽

pp. 38-43 ◽

Cited By ~ 29

Author(s):

Erdi Tosun ◽

Ali Can Yilmaz ◽

Mustafa Ozcanli ◽

Kadir Aydin

Keyword(s):

Methyl Ester ◽

Emission Characteristics ◽

Compression Ignition ◽

Compression Ignition Engine ◽

Performance And Emission

Download Full-text

PERFORMANCE, EMISSION, NOISE AND VIBRATION CHARACTERISTICS OF BIOGAS –DIESEL DUAL FUEL COMPRESSION IGNITION ENGINE

JOURNAL OF ADVANCES IN CHEMISTRY ◽

10.24297/jac.v12i12.793 ◽

2016 ◽

Vol 12 (12) ◽

pp. 4588-4592 ◽

Cited By ~ 1

Author(s):

M. Ravi ◽

KCK Vijaya Kumar ◽

A. Murugesan

Keyword(s):

Engine Performance ◽

Vibration Characteristics ◽

Experimental Results ◽

Dual Fuel ◽

Flow Control Valve ◽

Compression Ignition ◽

Compression Ignition Engine ◽

Noise And Vibration ◽

Compression Ignition Engines ◽

Secondary Fuel

For decades, four-stroke compression ignition engines prove to be indispensable in major sectors of transport, agriculture, etc., and it will be very difficult to completely replace these heavy-duty workhorses in upcoming days. However, the present situation of four-stroke compression ignition engines is miserable and the future of these engines highly relies on meeting the emission norms that are being imposed every year. In this regard, renewable liquid fuels are capable of solving the problem of energy supply in a decentralized fashion and these fuels can simultaneously help in achieving environmental sustainability. In order to find a feasible solution to these issues, an endeavor has been made in this work to investigate the engine performance, emission, noise and vibration characteristics of Compression Ignition (CI) engine fuelled with biogas as a secondary fuel and diesel as primary fuel. In this work, the secondary and primary fuels are used to power the kirloskar single cylinder four stroke naturally aspirated water cooled diesel engine. The secondary fuel (biogas) at various quantities was mixed with air and fed into the intake manifold of the engine. Also, the supply of biogas to the engine is precisely controlled by electronic flow control valve. The different flow rates of the biogas are allowed to flow inside the engine with the air intake ratio of 0.075gm/s,0.1gm/s,0.125gm/s,0.15gm/s and the analysis is done on each ratio. From the experimental results it was noted that at 0.125 gm/s, biogas operation significantly reduces noise and vibration. Overall, from the experimental results it is concluded that the usage of biogas in dual fuel mode produces comparable engine performance and reduces noise and vibrations.

Download Full-text

Potential Utilization of Biodiesel as Alternative Fuel for Compression Ignition Engine in Malaysia

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.393.475 ◽

2013 ◽

Vol 393 ◽

pp. 475-480

Author(s):

Nik Rosli Abdullah ◽

Muhammad Izzat Nor Ma’arof ◽

Ismail Nasiruddin Ahmad ◽

Salmiah Kasolang ◽

Nor Hayati Saad

Keyword(s):

Environmental Concern ◽

Alternative Fuel ◽

Renewable Fuels ◽

Compression Ignition ◽

Compression Ignition Engine ◽

Renewable Fuel ◽

Alternative Sources ◽

Biodiesel Fuels ◽

Near Future

Global total petroleum deficit and environmental concern on the emissions issues concerning pure diesel had started a technological race in producing alternative sources of energy which includes renewable fuel. Among the developed renewable fuels is the biodiesel which is a type of fuel derived from various sources of vegetable plants and waste fuels. Various biodiesels have been engineered to beat par to or even perhaps, a leap better in term of performance topure diesel. In short,biodiesel has shown a promising sign as the best candidate in overcoming total dependent on petroleum-derived fuel.This paper gives review on various tests and experiments conducted on biodiesel in order to highlight the potentials preserved by the fuel and to further endorse for a more mass usage of biodiesel and simultaneously for Malaysia to be a potential global producer of biodiesel fuels in the near future.

Download Full-text