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

Modern mobile phones with advanced functionality, known as smartphones, have many applications. A triaxial accelerometer is used to determine the current position of the smartphone in space and therefore the screen orientation. It is known that accelerometers are used to determine important operational properties of vehicles, such as dynamics and acceleration. In this regard, the purpose of this paper is to study the possibility of using a smartphone to measure the vehicle acceleration.

Passengers and the driver in vehicles are subjected to vibrations, noise, acceleration, etc., which affect the comfort, activity and health of people. The effect of vibrations on the human body depends on their frequency, amplitude, duration and direction of impact. Prolonged exposure to vibration causes fatigue in the driver and passengers, which reduces their performance and worsens their functional condition. This can affect traffic safety, so one of the main requirements for modern vehicles is to increase ride comfort. The ride comfort is a set of conditions, impacts and sensations of the driver and passengers when traveling in vehicles. Over the years, there have been many
studies and scientific developments aimed at measuring, evaluating and analysing the various factors that affect ride comfort . This paper presents a review on the research studies that have been done on dynamic factors that affect the ride comfort in road vehicles and methods used for measurement and its evaluation were discussed. Finally, some existing suggestions for improving the ride comfort in road vehicle are presented.

This paper considers various examples of lateral tilting of road vehicles when cornering. Narrow tilting three wheeled vehicles are considered. Four wheeled tilting small road vehicles, passenger cars with active anti-roll bars and cars with active tilting when moving in a turn are presented. The advantages and disadvantages are discussed

The efficiency and technical and economic properties of the electric cars depend mainly on the rechargeable traction battery. LiFePo4 batteries belongs to the lithium-ion type and has a number of advantages such as high capacity, long life cycle, resistance to fire at high temperatures or shock. They have safe and stable over-charging and over-discharging performances. This paper describes the process of charging the individual cells of an electric car battery after their over-discharge.