首页|Experimental investigation on the impact of ammonia fuel in a low‐powered CI engine – A study toward dual fuel engine approach
Experimental investigation on the impact of ammonia fuel in a low‐powered CI engine – A study toward dual fuel engine approach
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NETL
NSTL
Wiley
Abstract This study aims to operate a CRDI‐equipped single‐cylinder CI engine in a dual fuel mode with pilot‐ignited WCB fuel and port‐injected NH3 fuel. The current study experimentally investigates the influence of various AEFs on performance, combustion, and pollutant emissions of dual fuel engine at peak load (4.14 bar BMEP @ 1500 rpm) conditions with constant speed. The obtained results showed that the AEF was limited due to its inherent combustion properties. Under the aforementioned operating conditions, we achieved a maximum of 44.89% of AEF. The NH3 dual fuel engine achieves a maximum BTE of 29.33%. Moreover, in the dual fuel operation, the combustion switches from the diffusion phase with WCB operation to the rapid controlled phase as the AEF increases. The ICT reduces from 1488 to 1443 K when the AEF increases from 0% to 44.89%, respectively. Although NH3 injection notably decreased the CO2, HC, CO, and smoke emissions by 57.14%, 60.26%, 71.42%, and 67.59%, NOx emissions increased by 16.21% compared with WCB operation. The BSEC of the dual‐fuel mode engine is 13.07 MJ/kW‐hr, which is slightly higher than the biodiesel operation mode, 12.17 MJ/kW‐hr. The maximum ICP, HRR, and ID were increased by 2.6 bar, 4.64 J/deg., and 5 CAD, and CD and combustion phasing were reduced by 9.3 CAD and 7.98 CAD, respectively. However, the turbulence within the cylinder fluctuates significantly, with a COV of IMEP reaching 5.23% at an AEF of 44.89%.
NETL
NSTL
Wiley
