This article provides information about the operation of the SCR exhaust after-treatment system in D13C engines. Nowadays, atmospheric pollution is one of the main problems of our society, even though most of this pollution occurs in cities with heavy congestion, in which most vehicles emit polluting gases such as CO2 and NOx, the latter is formed by nitric oxide (NO) and nitrogen dioxide (NO2). Therefore, this type of gas is very harmful to the person, which is why technology was developed to mitigate this pollution problem. The SCR technology, also called Selective Catalytic Reduction, uses the AdBlue solution, which is an additive combined with an infusion of urea to treat nitrogen oxide to comply with the exhaust emission standards applied to Euro 5 trucks. The AdBlue solution is injected into the exhaust gases before they pass through the catalytic converter. Thus, the additive conv...

This article develops a topic of interest for users who can access the Internet and do not know the dangers of connecting to a free access network where the administrator of this is unknown, so a connection to this network would not be recommended. The central theme of this research is to demonstrate the risks of connecting to unknown access networks. The methodology used was the evaluation of how many users were being connected to the network created to monitor. The data obtained from users already connected have also been evaluated. According to the days they were connected through the networks, there is a strong demand for connected users. The conclusions show that some users are unaware of the dangers of connecting to one of these networks mentioned above and the risk of the amount of information that a person connected to the same network can obtain with the help of programs already...