Research on the economic efficiency of using biogas fuel with commodity gasoline in the 7th generation hbo power supply system

Abstract

The authors have conducted a study of the economic efficiency of using biogas fuel in a mixture with commercial gasoline. In the process of using natural gas in internal combustion engines, a number of difficulties arise related to the adaptation of the engine and its systems. However, the prospect of using biogas fuel has significant economic and environmental feasibility, and therefore is extremely important. Until recently, it was extremely difficult to ensure the simultaneous supply of liquid and gaseous phases of fuel, but the 7th generation gas cylinder equipment (GCB) for direct injection engines provides fuel supply simultaneously in the liquid phase (through gasoline injectors) and the vapor phase (into the intake manifold). Therefore, the study of the economic efficiency of using biogas fuel with commercial gasoline in the 7th generation GCB power supply system is quite relevant. At the initial stage, we obtained a coefficient that takes into account the increase in fuel mixture consumption due to the lower calorific value of biogas. With an increase in the share of biogas in fuel from 10 to 50%, the fuel consumption coefficient increases from 1.05 to 1.31. We also obtained the dependence of the change in the price of used commercial gasoline in fuel mixtures depending on the percentage content of biogas fuel in them. For the adopted prices for commercial gasoline and biogas, the conducted studies show that with an increase in the percentage content of biogas in equivalent fuel to 50%, an increase in the economic efficiency of its use is achieved due to the use of low-octane gas and, as a result, the cost of the resulting fuel decreases from 5.8% to 30%. Therefore, the use of biogas in internal combustion engines is promising both in view of the reduction in the price of gasoline used in fuel mixtures and with the development of HBO technologies.