Gasoline-diesel and methanol-diesel fueled reactivity controlled compression ignition (RCCI) engine extended load operation with high compression ratio
2022-01-0548
03/29/2022
- Event
- Content
- The study presents extended load operation (at 3.4 bar BMEP) of dual fuel combustion mode for light-duty single cylinder compression ignition (CI) engine. The high compression ratio, hot charge dilution (with 30% and 389 K) and dual fuel combustion provides more fuel-air mixing, evaporation and reactivity stratification for obtaining minimum HC and NOx-soot emissions. Without altering the engine configurations the suitability of alternative fuel (Methanol) is investigated for extended engine operation. Gasoline and methanol are selected as low reactivity fuels (LRF) and diesel as high reactivity fuel (HRF) for understanding the dual fuel RCCI combustion. The dual-fuel combustion with charge dilution shows the improved combustion characteristics, increased brake thermal efficiency with minimum emissions for test fuels. The methanol-diesel shows delayed start of combustion, reduced heat release rate, increase in fuel consumption and CO emissions with charge dilution. For gasoline-diesel and methanol-diesel combustion, the engine shows reduced RoPR and extended combustion duration with charge dilution.
- Citation
- Chaudhari, V., and Deshmukh, D., "Gasoline-diesel and methanol-diesel fueled reactivity controlled compression ignition (RCCI) engine extended load operation with high compression ratio," SAE Technical Paper 2022-01-0548, 2022, .