Viktor Slavin

This article presents the results of experimental and computational studies of the performance of a car with a gasoline engine with spark ignition when retrofitted with a system of liquefied petroleum gas (LPG). To analyze the impact of the use of LPG instead of gasoline, the mathematical model of the car’s movement according to the modes of the European driving cycle has been refined. It was established that when using LPG for a car in the driving cycle, fuel consumption in energy units decreases by 10.38%. Gas consumption, determined in mass units, is lower than gasoline consumption. In load modes, this difference is about 8% and in idle mode, it reaches 16–18%. The adequacy of the mathematical model is confirmed by experimental studies of the car on modern equipment with the measurement of fuel efficiency and environmental performance in motion, according to the specified cycle. The deviation of the calculated fuel consumption from the results of experimental studies does not exceed 0.86%. The values of environmental indicators obtained by calculations on the mathematical model differ from the experimental ones by an average of 15%. The conducted studies showed the expediency of using LPG by retrofitting a car with a gasoline engine with an LPG power supply system and the possibility of using mathematical modeling to assess the feasibility of such retrofitting.

The automotive sector has recently undergone enormous transformations, mainly dictated by the requirements to reduce the negative impact of the automotive industry on the natural environment. Reducing emissions from this sector has become the main driver of change in modern motor vehicles. Unfortunately, due to economic differences in the world, this process is not the same in all countries. Despite these differences, however, even in less developed countries, efforts are made to reduce vehicle exhaust emissions. The work conducted road tests, bench, calculated comparative studies of fuel, economic, environmental and energy performance of a serial car with a standard carburetor power system and equipped with an electronic gasoline injection system and a three-component catalytic converter under operating conditions.

Reducing exhaust emissions from motor vehicles has become a major task in the design of modern motor vehicles. Internal combustion engines, despite the increasingly frequent restrictions on, for example, entry to city centers, still constitute the majority of the used motor vehicles. For these reasons, it is very important to properly operate and control the used motor vehicles, especially in the field of exhaust emissions. One way is to replacement of the vehicle fleet and individual cars with newer generation vehicles. Unfortunately, due to economic differences in the world, the rolling stock replacement process is not the same in all countries. However, despite these differences, even in less developed countries, efforts are being made to reduce vehicle emissions. This work presents road, bench and computational comparative tests of the fuel, economic, environmental and energy characteristics of a series car with a standard carburetor supply system and equipped with an electronic gasoline injection system and a three-component catalyst under operating conditions.