Effects of EGR on combustion and emission characteristics of PODE/methanol RCCI mode at high load

Liu, Junheng; Ma, Haoran; Wang, Lejian; Liang, Wenwen; Qian, Jiasheng; Sun, Ping; Wang, Pan

doi:10.1016/j.applthermaleng.2023.120036

Cited by 10 publications

(2 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…An investigation was carried out on RCCI combustion by evaluating the emission performance of a CI engine, it was discovered that the homogeneity of the air fuel mixture largely controls the NOx emissions of RCCI. Additionally, raising the premixed ratio may successfully enhance BTE and NOx while reducing the peak pressure rise rate for RCCI …”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Experimental Studies to Reduce Usage of Fossil Fuels and Improve Green Fuels by Adopting Hydrogen–Ammonia–Biodiesel as Trinary Fuel for RCCI Engine

Ramachandran,

Krishnaiah,

Perumal Venkatesan

et al. 2023

ACS Omega

View full text Add to dashboard Cite

This study investigates the feasibility of hydrogen addition to achieve lower emissions and higher thermal efficiency in an ammonia−biodiesel-fueled reactivity-controlled compression ignition (RCCI) engine. A single-cylinder light-duty water-cooled compression ignition (CI) engine was adapted to run in RCCI combustion with port-injected ammonia and hydrogen as low reactive fuel (LRF) and direct-injected algal biodiesel as high reactive fuel (HRF). In our earlier study, the ammonia substitution ratio (ASR) was optimized as 40%. To optimize fuel and engine settings, hydrogen is added in quantities ranging from 5 to 20% by energy share. The combustion, performance, and emission characteristics were investigated for the trinary fuel operation. The result shows that the 20% hydrogen premixing with 40% ammonia−biodiesel RCCI operation increased the peak cylinder pressure (CP), peak heat release rate (HRR), and cumulative heat release rate (CHRR) by 15.12, 25.15, and 26.68%, respectively. Ignition delay (ID) and combustion duration (CD) were decreased by 15.53 and 11.24%, respectively. The combustion phasing angle was advanced by 4 °CA. The brake thermal efficiency (BTE) was improved by 15.49%, and brake specific energy consumption (BSEC) was reduced by 21.92%. While the nitrogen oxide (NOx) level was significantly increased by about 31.82%, the hydrocarbon (HC), carbon monoxide (CO), smoke, and exhaust gas temperature (EGT) were reduced by 24.53, 28.16, 25.82, and 17.47% as compared to the optimized ASR40% combustion.

show abstract

Section: Introductionmentioning

confidence: 99%

“…Additionally, raising the premixed ratio may successfully enhance BTE and NOx while reducing the peak pressure rise rate for RCCI. 18 1.5. Motivation and Objective.…”

Section: Introductionmentioning

confidence: 99%