Experimental Investigations on the Relation of the Lubricant’s Flash Point and Quality of the Piston Made from Aluminium Alloy for its Application in Internal Combustion Engines

2015 ◽  
Vol 651-653 ◽  
pp. 297-304 ◽  
Author(s):  
Michael A. Petrov ◽  
Timophey S. Basyuk ◽  
Pavel A. Petrov ◽  
Alexander N. Petrov
Keyword(s):  
Internal Combustion Engines ◽  
External Source ◽  
Quality Parameters ◽  
Flash Point ◽  
Experimental Investigations ◽  
Combustion Engines ◽  
Initial Activation ◽  
Punch Contact ◽  
Heat Amount

In the current paper there was made an attempt to develop an experimental method of physical (lubricant’s flash point Tfp) and subjective (forgings’ quality) parameters coupling for hot isothermal-like forging operation. The quality forgings could be manufactured both by high and low lubricant’s flash point. The increase of Tfp value in exothermal reaction follows to the increase of the released heat amount by the lubricant, because it needs more initial activation energy transmitted from the external source to initialize transformation of the material from one aggregate state into another (from liquid or solid into gaseous or sol-like). This can prevent the temperature decrease on the punch due to strong convective heat transfer with the environment through the building of the isolation temperature shield on the punch contact surface at the beginning of the punch stroke. On the other hand it can cause the defect building on the forgings like penetrations, which could not be eliminated during cleaning operation before mechanical treatment due to chemical interactions of the dissolved active agents, or unfilled sections.

scholarly journals Quality Management of Aluminum Pistons with the Use of Quality Control Points

2020 ◽  
Vol 28 (1) ◽  
pp. 29-33
Author(s):  
Grzegorz Ostasz ◽  
Karolina Czerwińska ◽  
Andrzej Pacana
Keyword(s):  
Quality Control ◽  
Production Process ◽  
Internal Combustion Engines ◽  
Control Point ◽  
Internal Combustion ◽  
Combustion Engines ◽  
Control Points ◽  
Control Methods ◽  
Aluminium Piston

AbstractThe publication analyses the way of managing and improving the quality of the production process of aluminum pistons for internal combustion engines. The aim of the article is to propose a method of analysis of the effectiveness of individual control methods used in the process of controlling the aluminium piston. Thanks to the location of a control point with the highest share of product non-compliance detection in the production process, it is possible to reduce quality control points by less effective points, which will contribute to lower costs or shorten the time of production processes. In view of the increasing demands on the efficiency of the checkpoints for components in internal combustion engines, the issue is important and topical.

Systematic Reduction of Detailed Chemical Reaction Mechanisms for Engine Applications

2017 ◽  
Vol 139 (9) ◽  
Author(s):  
Lars Seidel ◽  
Corinna Netzer ◽  
Martin Hilbig ◽  
Fabian Mauss ◽  
Christian Klauer ◽  
...  
Keyword(s):  
Reaction Mechanism ◽  
Internal Combustion Engines ◽  
Combustion Engine ◽  
Internal Combustion ◽  
Combustion Engines ◽  
Reactor Model ◽  
Mechanism Reduction ◽  
Rating Method ◽  
Chemical Reaction Mechanisms

In this work, we apply a sequence of concepts for mechanism reduction on one reaction mechanism including novel quality control. We introduce a moment-based accuracy rating method for species profiles. The concept is used for a necessity-based mechanism reduction utilizing 0D reactors. Thereafter a stochastic reactor model for internal combustion engines is applied to control the quality of the reduced reaction mechanism during the expansion phase of the engine. This phase is sensitive on engine out emissions, and is often not considered in mechanism reduction work. The proposed process allows to compile highly reduced reaction schemes for computational fluid dynamics application for internal combustion engine simulations. It is demonstrated that the resulting reduced mechanisms predict combustion and emission formation in engines with accuracies comparable to the original detailed scheme.

Assessing the power quality of internal combustion engines operating with different fuels

2016 ◽  
Vol 99 (3) ◽  
pp. 899-905
Author(s):  
Jesús Martínez Patiño ◽  
Miguel A. Hernández Figueroa ◽  
Martín Picón Núñez ◽  
Fernando Ireta Moreno ◽  
Jose Merced Lozano García
Keyword(s):  
Power Quality ◽  
Internal Combustion Engines ◽  
Internal Combustion ◽  
Combustion Engines

scholarly journals Supercapacitors and starting modes of a hybrid car engine

2021 ◽  
Author(s):  
V.S. Antipenko ◽  
S.V. Antipenko ◽  
S.A. Lebedev
Keyword(s):  
Quality Of Life ◽  
Low Temperatures ◽  
Internal Combustion Engines ◽  
Metropolitan Areas ◽  
Internal Combustion ◽  
Combustion Engines ◽  
Hybrid Car ◽  
Start Up

Reducing the start-up time of internal combustion engines, especially at low temperatures and when the batteries are discharged, the use of supercapacitors leads to a reduction in emissions into the atmosphere, improving the quality of life in large metropolitan areas.

scholarly journals Heat Dissipation Characteristics of a FSAE Racecar Radiator

2021 ◽  
Vol 39 (5) ◽  
pp. 1667-1672
Author(s):  
Shreyas Padmaraman ◽  
Nagarathnam Rajesh Mathivanan ◽  
Babu Rao Ponangi
Keyword(s):  
Surface Area ◽  
Internal Combustion Engines ◽  
Heat Dissipation ◽  
Cooling System ◽  
Operating Temperature ◽  
Experimental Investigations ◽  
Inlet Temperature ◽  
Combustion Engines ◽  
Significant Drop ◽  
Race Car

In recent times, the rise in performance and power of internal combustion engines has resulted in an increased demand for more efficient cooling systems. Customized engineered coolants, additives, radiator materials, redesigned coolant pumps and radiators help to meet these increased demands. In case of FSAE racecar, designing a radiator is an important part for controlling the engine operating temperature and increasing the effectiveness of the cooling system. In this work, an attempt is made to develop a simple yet reasonably accurate analytical model to calculate the effectiveness of a radiator. The model is then applied to predict the operating temperature of the engine at varying load conditions. Experimental investigations were performed using a customized radiator test rig to replicate the field test conditions. The rate of heat dissipation through the radiator with respect to the inlet temperature is analyzed by changing the surface area of the radiator. The developed model is able to predict the engine operating temperature in close agreement with the experimentation conducted. A marginal increase in surface area of the radiator resulted in significant drop in engine operating temperature. Thereby reduction in engine operating temperature will boost the performance of FSAE race car.

Energy and Civilization

2017 ◽  
Author(s):  
Vaclav Smil
Keyword(s):  
Plate Tectonics ◽  
Internal Combustion Engines ◽  
Fossil Fuels ◽  
Plant Biomass ◽  
Combustion Engines ◽  
Photovoltaic Generation ◽  
Energy Flows ◽  
Agriculture Industry ◽  
Life On Earth

Energy is the only universal currency; it is necessary for getting anything done. The conversion of energy on Earth ranges from terra-forming forces of plate tectonics to cumulative erosive effects of raindrops. Life on Earth depends on the photosynthetic conversion of solar energy into plant biomass. Humans have come to rely on many more energy flows—ranging from fossil fuels to photovoltaic generation of electricity—for their civilized existence. This book provides a comprehensive account of how energy has shaped society, from pre-agricultural foraging societies through today’s fossil fuel-driven civilization. Humans are the only species that can systematically harness energies outside their bodies, using the power of their intellect and an enormous variety of artifacts—from the simplest tools to internal combustion engines and nuclear reactors. The epochal transition to fossil fuels affected everything: agriculture, industry, transportation, weapons, communication, economics, urbanization, quality of life, politics, and the environment. This book describes humanity’s energy eras in panoramic and interdisciplinary fashion, offering readers a magisterial overview.

Sensitivity Analysis of the Air Flow inside a Single Cylinder Engine for Different Turbulence Models Using CFD

2014 ◽  
Vol 1016 ◽  
pp. 624-629
Author(s):  
Felipe Grossi L. Amorim ◽  
Jean Helder M. Ribeiro ◽  
Marília Gabriela J. Vaz ◽  
Ramon Molina Valle
Keyword(s):  
Internal Combustion Engines ◽  
Turbulence Models ◽  
Internal Combustion ◽  
Combustion Engines ◽  
Single Cylinder ◽  
Greenhouse Gases Emissions ◽  
Single Cylinder Engine ◽  
Computational Resources ◽  
Experimental Pressure

Theincrease of greenhouse gases emissions makes necessary to improve the comprehension of the Internal Combustion Engines operation. One of the factors that affect the combustion in these engines is the turbulence, since it can raise the quality of the fuel-air mixture inside the combustion chamber. However, when modeling internal combustion engines using CFD, the turbulence model choice is always a relevant problem. The present paper analyzes the results for three different turbulence models (k-ε Realizable, RNG k-ε and Menter k-ω SST) ina single-cylinder engine geometry, comparing numerical and experimental pressure data. For this experiment, the k-ε models obtained more trustable results than the k-ω SST, using less computational resources. The models achieved good results for eddy recirculation inside de cylinder and in regions of free shear flow at the valve openings, which makes possible to observe the correlation between parameters such as tumble and turbulent kinetic energy.

Investigation on Spray Quality of Diesel Nozzles Based on Precise Grinding Process

2014 ◽  
Vol 1039 ◽  
pp. 52-58
Author(s):  
Yu Jie Bai ◽  
Tao Yu ◽  
Hong Xia Cai ◽  
Shu Zhen Yang
Keyword(s):  
Internal Combustion Engines ◽  
Preparation Method ◽  
Orthogonal Experimental Design ◽  
Combustion Engines ◽  
Scoring Method ◽  
Manufacturing Method ◽  
System Pressure ◽  
Working Medium ◽  
The Relationship

Spray quality of Multi-hole nozzles decides the quality of diesels, but the control of spray is a hard work in the field of internal combustion engines. The spray quality can be changed by abrasive suspend jet which is a flexibility manufacturing method and the quality will vary with system pressure, abrasive kind, diameter of abrasive, preparation method, viscosity of working medium and grinding allowance and some other parameters. This paper tries to optimize the spray quality of nozzles by using orthogonal experimental design to select the values of these parameters. To evaluate the quality of spray, a scoring method was offered and input parameters were organized to three parameters before experiment. According to the orthogonal table of factor level (L16(45)), the line charters between the parameters and the spray quality was shown. This paper considers that the optimal combination is A2B2C2. Then the relationship between spray quality and the parameters optimized is deduced. And the significance of the forum was checked, it shows that the forum was significant at level α=0.01.

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