Energy and exergy analysis of a combined injection engine using gasoline port injection coupled with gasoline or hydrogen direct injection under lean-burn conditions

Hydrogen is considered to be a suitable supplementary fuel for Spark Ignition (SI) engines. The energy and exergy analysis of engines important provide theoretical fundaments the improvement efficiency. However, few studies on balance engine working under Direct Injection (HDI) plus Gasoline Port (GPI) mode lean-burn conditions are reported. In this paper, effects two different modes SI presented. Two (GPI + GDI GPI HDI), five gasoline hydrogen direct injection fractions (0, 5%, 10%, 15%, 20%), excess air ratios (1, 1.1, 1.2, 1.3, 1.4) studied. results show that cooling water takes 39.40% average conditions, value 40.70% HDI mode. destruction occupies 56.12% 54.89% brake thermal efficiency can improved by 0.29% 0.31% at ratio 1.1 average, values 0.56% 0.71%