Technical and economic aspects of valve train wear during conversion of a gasoline internal combustion engine to gas engine fuel
| Autor: | Olexii Saraiev, Alexander Khrulev, Irina Saraieva |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Computer science
lcsh:Motor vehicles. Aeronautics. Astronautics gas equipment Automotive engineering Technical feasibility gas fuel valve recession Resource (project management) Fuel gas Work (electrical) internal combustion engine General Earth and Planetary Sciences Gas engine Gas cylinder Gasoline lcsh:TL1-4050 General Environmental Science Petrol engine |
| Zdroj: | Avtomobilʹnyj Transport (Harʹkov), Vol 47, Pp 5-14 (2020) |
| ISSN: | 2219-8342 |
| Popis: | Problem. The main trends in the car gasification are considered. It is shown that after the global automakers lost the interest in the creation and production of gas engines, the development of gas systems continues in the secondary market. A noticeable decrease in the valve train durability due to the valve recession was noted, which can make the conversion of the engine to gas fuel technically inexpedient and economically ineffective. However, in practice, a detailed economic analysis is either not carried out at all, or is done in a simplified manner. Goal of the work is to develop a methodology and obtain the quantitative data that allow assessing the economic efficiency and technical feasibility of converting the gasoline engines to gas engine fuel. Methodology includes the analysis of the friction process in the valve-seat interface zone using semi-empirical methods. Based on the data obtained, a list of constructive measures was compiled to reduce wear when converting the gasoline engine to gas fuel. A method for calculating the economic efficiency of a gasoline engine operating on gas, taking into account the initial and operating costs, has been developed. Results. It is noted that the transfer of a serial gasoline engine to gas without making changes to the valve train design means an absolutely inevitable decrease in the resource of the valve-seat interface. The area of effective application of gas equipment in car transport is obtained by calculation. It is shown that despite the large difference in price between gasoline and gas, the total economic effect of converting a gasoline engine to gas fuel does not exceed 15-20% and in general has a number of serious limitations not only of an economic but also of a technical nature. Originality. For the first time, it has been shown that any options for unauthorized conversion of car engines to another fuel should be considered, first of all, in terms of economic efficiency over the entire service life of the car, and not as private advantages obtained during certain periods of its operation. Practical value. The results obtained can be used in practice in the development of transport gasification programs, in assessing the real economic efficiency of the use of gas cylinder equipment, as well as in the search for the faults caused by the engine design change if converting it to another fuel. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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