Effect of injection parameters and producer gas derived from redgram stalk on the performance and emission characteristics of a diesel engine

The improvement in performance has been observed by changing the injector nozzle's geometry of the dual-fuel liquid-gas engine. The combined effect of injector parameters and producer gas (PG) derived from the redgram stalk on the performance and emission characteristics of a dual-fuel diesel/Honge Oil Methyl Ester (HOME)-PG operated CI engine has been studied. The injector nozzles with 4, 5, and 6 holes (diameter of 0.2, 0.25, and 0.3 mm) were analyzed. Diesel-PG operation with 4 holes, 0.25 mm diameter nozzle and HOME-PG operation with 6 holes, 0.25 mm diameter nozzle resulted in better performance and lower emissions. Diesel-PG operation has 4.5% higher BTE (brake thermal efficiency) with a 4 hole nozzle and 0.7% higher for a 0.25 mm diameter 6 holes nozzle than HOME-PG operation. The HOME-PG operation results showed that the with an injection opening pressure of 240 bar, 6-hole nozzle, and a diameter of 0.25 mm have an improved BTE of 5.8% with emission levels 15-30% lower than those of other geometries. (C) 2021 THE AUTHORS. Published by Elsevier BV on behalf of Faculty of Engineering, Alexandria University. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

Automated summary

By altering the geometry of the injector nozzle, the study investigated the performance and emission characteristics of a dual-fuel engine under different operating conditions, identifying the optimal parameter combinations. The results showed that a 4-hole nozzle is suitable for Diesel-PG operation, while a 6-hole nozzle is ideal for HOME-PG operation, resulting in improved performance and reduced emissions.