International Scientific Journals
of Scientific Technical Union of Mechanical Engineering "Industry 4.0"

Ethanol is a renewable, domestically produced alcohol fuel made from plant materials, such as corn, sugar cane, or grasses.
Using ethanol we can reduce oil dependence and greenhouse gas emissions. Ethanol fuel used in the U.S. has increased dramatically from about 1.7 billion gallons in 2001 to about 13.4 billion in 2014. E10 is now the standard replacement for traditional unleaded. Over 90% of all unleaded sold today contains ethanol.

In this paper it has been examined the influence of the E10 fuel mixure on some car engine performance.

Тhe electronic devices are everywhere in our life and for their proper performance it is very important to have them protected from Electromagnetic Interference (EMI). Sources of EMI could be some components of the device, nearby conductors, other devices, high voltage lines, atmosphere static discharges, etc. One of the main methods for protection from external EMI is by shielding the whole device and for this purpose are used various materials. In this paper are presented two types of materials used for EMI shielding – polyester silk with electrolysis metal coating and nitrile butadiene based compounds (NBR) containing as a filler natural magnetite. For both materials is investigated the EMI absorption for electromagnetic waves in the band (8-12 GHz) and at 2380 MHz.