Emission is one of the key problems in the automotive industry, which engineers try to eliminate by lowering emissions to the minimum. Transmission emission plays an important part here. The basic characteristics of gears include their shape, load capacity, and emissions. The most significant source of noise and vibration in the gearbox is the step change in the meshing stiffness of the gearing, which depends on the path of meshing at the entry and exit of the meshed teeth. Ensuring a permanent multi-pair mesh is a way to mitigate these step changes as much as possible. This leads to the design and implementation of gears in an integer contact ratio. In addition to this, the article deals with the impact of individual parameters on the stiffness of the gearing, which is a source of noise and vibration. The meshing stiffness of the gearing was determined on the deformation basis of the gearing, as solved by the Finite Element Method.
Changing market requirements, pressure to minimize production costs, competition, but also legislative restrictions have an impact on a number of areas, not excluding the automotive industry. Currently, development trends are moving towards the application of advanced technological solutions and materials, with the aim to reduce vehicle‘s weight, increase their strength and safety, and at the same time reduce the emission of vehicles. The Shell Eco Marathon competition is an excellent platform for the implementation of these activities. The main goal of the competition is to support the creative invention of research teams and bring innovative ideas and technical solutions. The scientific article focuses on a detailed analysis of development steps in the construction of experimental vehicles. The results of the research were presented at a competition in London 2019 with successful achievement. This work is a contribution to the design and aerodynamic optimization of the body and at the same time brings new ideas and structural elements to improve the production power unit.
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