The article deals with the actual problem associated with poor-quality operation of vehicle engines with incomplete loading and operation at partial high-speed modes. It is shown that such engine operating modes make up the bulk of the time, especially when the vehicle operates in urban conditions. Poor engine performance in these modes results in decline in fuel economy and environmental performance. To improve the technical performance of diesel engines, a device is proposed that allows control the uneven rotation of camshaft of vehicle diesel fuel pump. The kinematic schemes of the angular velocity transducers for fuel pump camshaft power mechanism, the kinematic and power drive calculation method are developed.
The analysis of the production and yield of sunflower seeds in Ukraine for the period from 2000 to 2019 was conducted in the article. The comparative analysis of the gross harvest of sunflower seeds and the export of sunflower oil for the years under research was carried out. The dependence of exports on gross harvest was revealed and its share was calculated. It was determined that the export of sunflower oil has increased over the years under research, which indicates a significant Ukraine’s export potential. It was found that the increase in the share of exports by 15.9% was made possible by a qualitative change in yield, that was ensured by the changes in the cultivation technology and by the selection of sunflower hybrids that are better adapted to climate changes. The recommendations for further improvement of cultivation technology in connection with climate change in order to further increase yields and the export potential of Ukraine were given.
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