The use of biofuel is one method for limiting the harmful impact diesel engines on environment. It also a way gradually becoming less dependent depleting petroleum resources. New resources producing biodiesel are currently being sought. authors produced esters from animal fat waste, obtaining fuel that can power and identifying to utilise unnecessary waste. methyl ester (AME) was using reactor constructed non-industrial production. aim underlying this paper determine whether engine be...

Progressive and increasingly noticeable climate change is forcing the search for new energy sources to reduce greenhouse gas emissions, especially carbon dioxide. One way emissions by gradually replacing fossil fuels with biofuels. The authors of this work addressed production second-generation biofuel. purpose study was produce biodiesel from babassu palm oil (BBuE) first-generation rapeseed (RME), their properties, determine effect addition these biodiesels diesel fuel on selected...

nternal combustion engine has been in existence for a long time, but it is still the scope of research interests and contained subject matter numerous development studies analyses. The paper presents basic goals into engines. A short characteristics piston as an object control adjustment was provided. It indicated that measurements working medium cylinder pressure patterns could be applied to performance engine, especially multi-fuel one. results 1.6 dm 3 X16SZR Opel Astra car, which fuelled...

Climate changes caused by the greenhouse effect make it necessary to look for new sources of energy. One them is waste a biological origin. They are often difficult dispose and such process can be expensive. Increasingly, they used produce biofuels that replace petroleum-based fuels. also an alternative food-based biofuels. The aim work was propose method using fatty generated in plant dealing with tanning animal skins evaluate properties produced authors decided use this biodiesel. A...

The use of biofuels to power compression–ignition engines makes it possible reduce emissions certain harmful components exhaust gases. purpose this study was determine the influence second-generation on course indicator graphs and heat release characteristics Perkins 1104D-44TA engine. For comparative purposes, same tests were carried out by feeding engine with first-generation biofuel diesel fuel. Babassu butyl esters (BBuE) used as biofuel. second fuel a biofuel—rapeseed oil methyl (RME)....

The research objective of this project is to assess the possibility making and applying annular channels on a non-operating element spraying nozzle needle with catalytic additive without it. purpose structural modifications being made improve process fuel-air mixture combustion by compression ignition engine. task fuel atomisation in chamber increase turbulent phenomena injector nozzle. A material, form platinum, applied induce dehydrogenation hydrocarbons paraffin group comprised olefin...

The subject of the considerations presented in this article are experimental braking performance tests carried out on dry surfaces for three selected vehicle types: passenger vehicle, delivery truck and touristic bus. paper describes factors affecting performance. were repeatedly asphalt pavement using specialized testing equipment. deceleration was determined as a function time maximum values determined. Statistical analysis obtained results performed, mean standard deviation Based...

Transport is the source of numerous hazards both to natural environment and people's health life. Currently, efforts are being undertaken limit negative impact economy, transport included, upon environment, one main concerns ensuring safety people. The sources hazard caused by transportation include, among other things, combustion engines. Their operation generates emission toxic compounds, greenhouse gases noise. This article discusses basic people as well issue fuels used for powering aim...

Abstract A vehicle’s longitudinal acceleration is one the parameters that characterize a motion dynamics and used, among others, to assess comfort of public bus passengers. Rapid braking performed by urban drivers can be deemed passengers as uncomfortable dangerous in some situations, especially for standing This paper presents an analysis bus’s recorded during extreme attempts. The experimental tests were conducted on dry wet asphalt concrete surfaces. test results allow statement lateral...

The development of human civilisation has always been related to an increase in energy demand. growth transportation and the number automobile vehicles service produce a rising demand for fuel. Before piston IC engine is replaced with different effective power source, it necessary use gaseous fuels on larger scale than ever before. natural resources are estimated be much higher crude oil reserves. Additionally, engines can run biogas, i.e. renewable means lowering harmful effect environment....

The use of biofuels is one way to reduce the increasingly visible harmful effects diesel engines on environment. At same time, it also a gradually dependence depleting oil resources. New sources for biodiesel production are currently being sought out. authors this article have produced esters from animal fat waste, obtaining biofuel that can power while manage unnecessary waste. For be possible, necessary confirm possibility using such compression ignition engines. To end, moribund conduct...

Abstract Modern means of transport are basically powered by piston internal combustion engines. Increasingly rigorous demands placed on IC engines in order to minimise the detrimental impact they have natural environment. That stimulates development research The involves experimental and theoretical investigations carried out using computer technologies. While being filled, cylinder is considered be an open thermodynamic system, which non-stationary processes occur. To make calculations...

The paper presents a statistical analysis of SO2 air concentration in Krakow for the period from 2007 to 2016. source data were obtained two measuring stations Provincial Environmental Protection Inspectorate Krakow. had daily average values. monthly values and quarterly averages used analysis. started with determination trend function time series moving average. Then indices changes determined. Considering whole ten years, slight downward was noted, even though somewhat rising observed...