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

The paper presents the program and methodology of carrying out research on kinematic pair with pivoting friction. There was examined a node with pivoting friction in bearing concentrated connection flat surface-spherical bowl. During the research there were determined two types of characteristics – characteristic of friction moment as a function of load and experimentally designated characteristic of wear of the frictional kinematic pair. Both of the assigned characteristics are compared.

The paper presents the program and methodology of carrying out research on kinematic pair with pivoting friction. There was examined a node with pivoting friction in bearing concentrated connection flat surface-spherical bowl. During the research there were determined two types of characteristics – characteristic of friction moment as a function of load and experimentally designated characteristic of wear of the frictional kinematic pair. Both of the assigned characteristics are compared.

Internal combustion (IC) engines are main source of power used in the automotive industry. These engines have undergone many up gradation for decades, with an initial goal of increase in power of the unit. Presently, as a result of tightening environmental regulations, research is focused on reducing harmful gases emissions along with increase of the engines efficiency.

One of the main problems in appraiser work is to determine speed the car immediately before the accident, basing only on the collision of two vehicles or collision of a car with an obstacle. One of the research directions providing a solution to this problem are analysis of the energy necessary to cause permanent deformation. Since the early ‘70s used was the method based on the analysis of the permanent deformation depth, that are defined as proportional to the force causing deformation.

This paper presents values comparison of friction coefficient inside ball joints depending course given by the vehicle, period of exploitation and the vehicle brand. Friction coefficient were defined on the contact surface between steel ball joint pin and the ball joint seat made from plastic covered by PTFE. For the selected working pair of the elements comparison of friction coefficient in load function are done. The preform of the measurements methodology and the test bench are additional show in the paper.

This paper presents values comparison of friction coefficient inside ball joints depending course given by the vehicle, period of exploitation and the vehicle brand. Friction coefficient were defined on the contact surface between steel ball joint pin and the ball joint seat made from plastic covered by PTFE. For the selected working pair of the elements comparison of friction coefficient in load function are done. The preform of the measurements methodology and the test bench are additional show in the paper.

The primary objective of this research is to find the relationship between the velocity of a vehicle in the beginning of the collision stage and the energy causing the deformation during a car crash. The velocity of a car in the beginning of the crash stage is determined by comparison of kinetic energy and body deformation energy. Considering the existing methods there is proposed a new method of calculation of the EES parameter describing the energy equivalent speed. The presented approach enables improving the accuracy of EES parameter calculation.

The paper shows problems and examples finishes solutions applied in the motor industry which be used by solar car production to competition World Solar Challenge. The subject matter will contains the mechanical matters connected with endurance of materials, the wheel set and aerodynamics as well as the electric questions relating the photovoltaic and conversion of electric energy on mechanical energy.