Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6629961 | Fuel | 2019 | 8 Pages |
Abstract
Experiments were conducted on a Cooperative Fuel Research (CFR) engine with varying fuel-air equivalence ratio (Ï) to assess the engine performance and emissions with three alternative fuels, natural gas, ethanol, and syngas, at compression ratio of 8:1 and engine speed of 1200â¯rev/min. Equivalence ratio was varied by decreasing the mass of fuel while keeping the mass of air the same. The lean misfire limit was defined as the equivalence ratio where the CoV of IMEP across multiple consecutive engine cycles was greater than 5%. It was found that syngas can maintain stable combustion at extremely lean conditions and has the lowest lean misfire limit. Natural gas combustion achieved a lower lean misfire limit than gasoline and ethanol. Gasoline and ethanol had similar lean misfire limits, but it was found that gasoline helped the engine to achieve higher load and fuel conversion efficiency compared to the three alternative fuels.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
Zhongnan Ran, Deivanayagam Hariharan, Benjamin Lawler, Sotirios Mamalis,