Experimental evaluation of Energy and Exergy of Hydrogen, CNG and Gasoline fuelled High-Speed Spark Ignition Engine

HIGHLIGHTS The maximum power is recorded with Gasoline than CNG and Hydrogen fuel. The maximum exergy and energy efficiency is with Hydrogen, followed by CNG and then Gasoline. Hydrogen fuel has a maximum potential to convert into energy. The maximum energy destruction of 48.7kW for gasoline fuel at 3000 rpm and followed by CNG and hydrogen. The maximum entropy generation of 85.5 W/K with Gasoline and 60.72 W/K and 29.39W/K for CNG and hydrogen engine respectively at 10000 rpm. The entropy generation rate increase with engine speed. The highest rate of heat release is from hydrogen fuel, followed by Gasoline and CNG.   ABSTRACT- The analysis was performed on a single Cylinder, Multivalve, Electronic Fuel Injection, high-speed motor fuelled engine with Gasoline, CNG and Hydrogen to assess energetic and exegetic performance. The engine was evaluated from 3000 rpm to 10000 rpm on each of the three fuels. All tests are led at Wide Open Throttle condition.The Gasoline and CNG combustion was stoichiometric and hydrogen was lean-burn.The most extreme energy and exergy efficiency is seen with hydrogen 39.6 % and 37.55 % separately. Followed by CNG as energy and exergy of 38.0 % and 36.36 % individually at 5000 rpm. With gasoline fuel 36.38 % and 34.2 % energy and exergy recorded at same speed of 5000 rpm. The highest performance of hydrogen is because of high flame speed, and higher flame temperature.This shows that hydrogen converts most extreme chemical energy over to yield power than CNG and Gasoline. The coolant energy and exergy are additionally higher with hydrogen fuel. The most reduced is with gasoline and moderate is with CNG fuel. The outcomes are additionally checked with combustion investigation of each of the three fuels and found heat release rate was most extreme with hydrogen, trailed by Gasoline and CNG. The explanation behind the low heat release rate of CNG is because of least flame speed than Gasoline and Hydrogen. The greatest exergy destruction of 48.57 kW was with Gasoline and followed by CNG and minimal with Hydrogen. The greatest entropy is 85.5 W/K for Gasoline,60.72W/K and 29.39W/K for CNG and hydrogen engine individually. The most significant is for Gasoline