Effect of Gasoline-AVGAS Blends on Engine Performance of Engine with Direct Injection

Abstract

AVGAS called is a high-octane fuel that is obtained by formulating Gasoline and called aviation Gasoline. Due to the high-octane level, the air-fuel mixture can be compressed at a higher rate without ignition. TSI, which consists of the initials of Turbo Supercharger Injection, is defined as a turbocharged and direct injection engine. Generally used in small volume engines such as 1.2 lt. In this study, aviation Gasoline AVGAS and Gasoline were mixed in certain proportions and TSI was applied in a Gasoline engine. The changes in the performance of AVGAS-Gasoline fuel blends used in Direct Injection Engine were investigated in this experimental study. A5 (5% AVGAS, 95% Gasoline fuel by volume), A10, and Gasoline fuel were used as fuel. The tests were performed at full-throttle valve opening and variable engine speeds. The results of the tests showed increases in engine power, engine torque values with the use of AVGAS-Gasoline fuel blends, whereas, decrease was observed in brake specific fuel consumption values. While an increase of 1.54% was achieved in engine torque values compared to gasoline, the optimum values in engine power and specific fuel consumption were obtained as 51.92 kW at 3500 rpm and 239 g/kWh at 3000 rpm, respectively. In addition, increases were observed in the exhaust gas temperature and engine oil temperature, while a decrease was observed in the noise values.