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Investigating the Effect of CNG and LPG on the Engine Performance Parameters of a Petrol Engine | ||
| Biomechanism and Bioenergy Research | ||
| دوره 4، شماره 1 - شماره پیاپی 7، خرداد 2025، صفحه 44-58 اصل مقاله (923.48 K) | ||
| نوع مقاله: Original Research | ||
| شناسه دیجیتال (DOI): 10.22103/bbr.2025.24529.1109 | ||
| نویسندگان | ||
| Mohammad Reza Seifi* ؛ Mahmoud Karimi | ||
| Department of Biosystem Mechanics, College of Agriculture, Arak University, Arak, Iran. | ||
| چکیده | ||
| In the present study, the results of an investigation on a direct injection engine using gasoline, CNG, and LPG are reported. The engine was operated at various speeds ranging from 1500 to 6000 rpm under four loading conditions (25%, 50%, 75%, and 100%). No modifications were made to the engine components or fuel injection system. A factorial analysis of variance (ANOVA) was conducted to examine multiple independent variables simultaneously and determine whether the effect of one factor (load) depended on another factor (speed). Additionally, a three-way ANOVA was performed to evaluate interaction effects. The results showed that engine power and exhaust gas temperature increased with engine speed under different loading conditions. Moreover, load increments had a significant impact on output power and torque. At full load, the power and torque of the engine increased by 5.4% and 3% when fueled with gasoline and LPG, respectively. The maximum torque of 102 Nm was observed at full load. Stronger combustion led to a rise in exhaust gas temperature at higher loads. Below 50% load, variations in engine speed had a limited effect on temperature. However, increasing rpm raised exhaust gas temperature, with a more pronounced effect at higher loads. ANOVA results indicated that fuel type did not significantly influence the relationship between power and torque as engine speed increased. Therefore, CNG and LPG can be used in internal combustion engines without significant performance losses. | ||
| کلیدواژهها | ||
| Gaseous fuels؛ engine rpm؛ loading condition؛ power؛ torque؛ Exhaust gas temperature | ||
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