The high efficiency of diesel engines, their low operating costs, high durability and reliability have provided them with a leadership role in the heavy-duty vehicle market. Recently, diesel engines also achieved a growing share of the light-duty vehicle market, especially in those areas where fuel costs are high. This trend of growth of the diesel market requires a careful evaluation of the re...

in this paper, vehicle’s fuel consumption and exhaust emissions are investigated in different driving conditions based on driving segments clustering. driving data collection is performed using global positioning systems in real traffic conditions. the driving data is clustered into five groups using k-means clustering technique. vehicle’s fuel consumption and exhaust emissions (i.e. hc, nox a...

In internal combustion engines, exhaust valve and its seat gain considerable temperature as the hot gases exit through them. So, the rate of heat transfer should be under control. In this study, the contact heat transfer coefficient has been estimated. An experimental study on an Air-Cooled internal combustion engine cylinder head has been considered. Using the measured temperatures of sensors ...

An investigationi was undertaken to determine the oxygen absorption rates of a submerged culture of Bacillus anthracis at all stages of its growth cycle. The determination of oxygen absorption rates of a pathogenic fermentation such as this by analysis of the exhaust gases seemed to present fewer technical difficulties than did those methods that depended upon polarographic determination of dis...

Laser-based missile-defence systems are being increasingly employed on aircraft to provide protection when attacked by optically-guided weapons. In some engagements the laser beam must pass through the exhaust gases of the aircraft. To predict the increase in laser beam divergence and jitter of the laser beam direction, an understanding of the exhaust gas structure and its influence is required...

Waste heat recovery (WHR) can represent a solution to improve the efficiency of ships’ propulsion, helping exceed stringent greenhouse gas emission limits. This is particularly suitable in case propulsion based on turbines due their medium-high temperature level exhaust gases. study analyzes performance hybrid energy grid, which recovered by gases an aeroderivative turbine, GE LM2500+, when bot...

The increase in the level of greenhouse gases into environment, specifically carbon dioxide (CO2), leads to global warming, and limiting its emission has been a primary concern achieve neutrality by 2050. Among various methods decarburization, capture storage/utilization become paramount concerns for separation from exhaust gases. In this paper, widespread technological solutions CO2 are presen...

Ecological approach to transport including the fuel which is used in combustion engines involves a necessity of alternative solution application. The study shows test result analysis amount exhaust gases affecting natural environment. tests were performed for 81W self-ignition engine with direct injection. experiment was conducted mixture containing 70% diesel oil 30% fatty acid methyl esters. ...

Cattle rearing generate more global warming green house gases than driving cars. These green house gases leads to changes in the climate. This climate change affects the livestock, man and natural environment continuously. For this reason it is important for livestock farmers to find the ways which minimize these gases emission. In this article the causes of climate change and effects, measures...