Experimental assessment on performance, emission and combustion characteristics of the use of diesel-acetylene mixtures at different loads in a ci engine

[Display omitted] •This study's highlights can be summarized as follows:•The objectives of this article is to find out more about the impacts of acetylene-diesel mixtures on the performance of a CI. Three various of diesel-acetylene mixtures have been chosen for use in this study. They include without acetylene, 200 g/h and 400 g/h acetylene addition. The whole tests were completed at 1500 rpm and %0, 25, 50, 75 and %100 load under different values of λ.•The maximum in-cylinder pressure, BTE and exhaust temperature were clearly stated.•Exhaust emissions was a bit increased except soot emission by adding acetylene to diesel.•This paper suggests that a small amount of acetylene can be used in diesel engines.•The most beneficial result was obtained in soot. Furthermore, there is no significantly benefit of using acetylene as both performance and emissions in contrast to conventional diesel combustion. The current test was completed on a three-cylinder, liquid-cooled, naturally aspirated, indirect injection with injector pump on the head, compression ignition (CI) engine at 1500 rpm under changing load conditions. Acetylene was pumped as a secondary gaseous fuel into the intake port at various flow rates, while diesel was fed into the cylinder immediately as a primary fuel. The rate of gas flow was set at 200 g/h and 400 g/h, respectively. Tests were conducted at %0, %25, %50, %75 and %100 load conditions at above acetylene mass. In terms of combustion parameters, the results were assayed and compared. Acetylene induction reduced brake thermal efficiency (BTE) across all load settings. The highest BTE of 34.91 percent was attained for baseline diesel in the experiments. Acetylene is added to diesel fuel causes increased CO, HC, and NOx values when compared to conventional diesel combustion but soot was decreased. On the other hand, there is no significant change in CO2 emissions.