Abstract
The cycle variation characteristics of a 2.0, L port fuel injection hydrogen internal combustion engine (PFI-HICE) have been extensively investigated. The results show that the covariance of indicated mean effective pressure Cimep is the best parameter for evaluating the cycle variations in the PFI-HICE. Cimep decreases with the increase of idle speed or fuel-air ratio. The effect of ignition advance angle on Cimep diminishes as fuel-air ratio increases. The ignition advance angles that correspond to the minimum Cimep of the PFI-HICE decrease as fuel-air ratio increases. The Cimep of the PFI-HICE rapidly decreases as throttle increases when the throttle is less than 20%. The Cimep increases when hydrogen is injected in intake periods under idle conditions. These results indicate that the study on Cimep improves the stability of PFI-HICEs.
Original language | English |
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Pages (from-to) | 311-316 |
Number of pages | 6 |
Journal | Ranshao Kexue Yu Jishu/Journal of Combustion Science and Technology |
Volume | 19 |
Issue number | 4 |
Publication status | Published - Aug 2013 |
Keywords
- Cycle variation
- Hydrogen
- Hydrogen internal combustion engine
- Indicated mean effective pressure