Show/Hide Menu
Hide/Show Apps
Logout
Türkçe
Türkçe
Search
Search
Login
Login
OpenMETU
OpenMETU
About
About
Open Science Policy
Open Science Policy
Open Access Guideline
Open Access Guideline
Postgraduate Thesis Guideline
Postgraduate Thesis Guideline
Communities & Collections
Communities & Collections
Help
Help
Frequently Asked Questions
Frequently Asked Questions
Guides
Guides
Thesis submission
Thesis submission
MS without thesis term project submission
MS without thesis term project submission
Publication submission with DOI
Publication submission with DOI
Publication submission
Publication submission
Supporting Information
Supporting Information
General Information
General Information
Copyright, Embargo and License
Copyright, Embargo and License
Contact us
Contact us
Experimental and numerical investigation of inter-ring gas pressures and blowby in a diesel engine
Date
1993-01-01
Author
Dursunkaya, Zafer
Richardson, Dana E.
Metadata
Show full item record
This work is licensed under a
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
.
Item Usage Stats
188
views
0
downloads
Cite This
Inter-ring gas pressures and blowby in a diesel engine were investigated analytically and compared to experimental data measured at three engine speeds. Coupled simulations of ring dynamics, ring lubrication and inter-ring gas dynamics were carried out using the RINGPAK software, a code for the integrated analysis of ring pack performance and tribology. Inter-ring pressures and ring dynamics are known to have an important effect on the "blowback" mechanism of in-cylinder oil consumption, i.e. that of oil-laden gas flow from the ring lands into the cylinder. Predicted land pressures matched the experimental results very well qualitatively as well as quantitatively. The coupling between ring motions and inter-ring gas pressures and blowby, a key feature of the methodology, was seen to be crucial in obtaining agreement with detailed features of the land pressure data. Ring axial flutter and radial lift and collapse were found to be the second land pressure relief mechanisms which best explain the behavior of measured second land pressure during the power stroke. Simulations were also used to explain the observed effect of top ring bottom keystone angle and helped identify features of the experimental data which are questionable. Some calibration of the simulations was necessary, but consisted of varying ring pack geometrical parameters (end gap dimensions, land volumes), mostly within tolerances. This reveals the very significant effect manufacturing tolerances may have on ring pack performance. Good agreement was also obtained with the blowby mesurements associated with the land pressure data, by seeking correlation with inter-ring pressures only, without otherwise calibrating simulations for a best match of blowby measurements. © Copyright 1993 Society of Automotive Engineers, Inc.
URI
https://hdl.handle.net/11511/57193
DOI
https://doi.org/10.4271/930792
Collections
Department of Mechanical Engineering, Conference / Seminar
Suggestions
OpenMETU
Core
Evaluation of effect of fillet rolling process on the fatigue performance of a diesel engine crankshaft
Çevik, Gül; Gürbüz, Rıza; Department of Metallurgical and Materials Engineering (2012)
In this study, effect of fillet rolling process on fatigue performance of a diesel engine crankshaft was investigated. Crankshafts from two different materials, were studied; ductile cast iron EN-GJS 800-2 and micro-alloyed steel 38MnVS6. Resonance bending fatigue tests were conducted with crankshaft samples. Test plan according to staircase test methodology was used. Statistical analyses were carried out with the test data by Maximum Likelihood Estimation method in order to calculate the fatigue limits and...
Computational fluid dynamics simulation of the combustion process, emission formation and the flow field in an in-direct injection diesel engine
Barzegar, Ramin; Shafee, Sina; Khalilarya, Shahram (National Library of Serbia, 2013)
In the present paper, the combustion process and emission formation in the Lister 8.1 in-direct injection diesel engine have been investigated using a computational fluid dynamics code. The utilized model includes detailed spray atomization, mixture formation and distribution model which enable modeling the combustion process in spray/wall and spray/swirl interactions along with flow configurations. The analysis considers both part load and full load states. The global properties are presented separately re...
Experimental Investigation of Effusion and Film Cooling for Gas Turbine Combustor
İnanlı, Sinan; Yasa, Tolga; Ulaş, Abdullah (2016-07-12)
Experimental study was conducted to understand the heat transfer characteristics of film or effusion cooled test plates that represent the gas turbine combustor liner. Two effusion cooling test plates having different hole angles (30 and 75° with horizontal) were used. Film cooling tests were conducted by six different slot geometries. Test geometries were the scaled-up model of real combustor liner. Three different blowing ratios were applied for each test plate geometry. Surface cooling effectiveness was ...
Investigation on effect of equivalence ratio and engine speed on homogeneous charge compression ignition combustion using chemistry based CFD code
Ghafouri, Jafar; Shafee, Sina; Maghbouli, Amin (National Library of Serbia, 2014)
<jats:p>Combustion in a large-bore natural gas fuelled diesel engine operating under Homogeneous Charge Compression Ignition mode at various operating conditions is investigated in the present paper. Computational Fluid Dynamics model with integrated chemistry solver is utilized and methane is used as surrogate of natural gas fuel. Detailed chemical kinetics mechanism is used for simulation of methane combustion. The model results are validated using experimental data by Aceves, et a...
Experimental study of lean premixed prevaporized combustion fluctuations in a gas turbine burner
Allouis, Christophe Gerard; Beretta, F.; Amoresano, A. (2008-01-01)
Numerous experimental studies and numerical models were developed to understand the behavior of gas turbines with LPP technology; in particular, several researches are undergoing to better understand fuel/air interaction in the premixing duct, upstream of the combustion chamber. In this article, studies were performed on kerosene lean premixed flames in a LPP burner by mean of Planar Laser Light Scattering and a new technology such as FAst InfraRed Imaging varying the Air Fuel Ration (AFR). Both techniques ...
Citation Formats
IEEE
ACM
APA
CHICAGO
MLA
BibTeX
Z. Dursunkaya and D. E. Richardson, “Experimental and numerical investigation of inter-ring gas pressures and blowby in a diesel engine,” 1993, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/57193.