Investigating Combustion in a Mini Internal Combustion Engine
| Autor: | Asish K Sarangi, Pramod S. Mehta, A Ramesh |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
Materials science
Homogeneous charge compression ignition Nuclear engineering Cycle to cycle variation Aerospace Engineering Combustion Cylinder pressures Internal combustion engines Combustion pro-cess Performance characteristics Unmanned air vehicle (UAVs) Internal combustion engine Equivalence ratios Indicated mean effective pressure Laboratory set-up Hydrogen internal combustion engine vehicle Fighter aircraft Engines Engine cylinders |
| Zdroj: | IndraStra Global. |
| ISSN: | 2381-3652 |
| DOI: | 10.4271/2015-01-9002 |
| Popis: | Owing to a high power-to-weight ratio, mini internal combustion engine is used in propelling an unmanned air vehicle. In comparison to the performance characteristics, the investigations on the combustion aspects of mini engines are scanty. This investigation concerns study of the combustion process of a mini engine and its variability. For this purpose, the experimental cylinder pressure histories were obtained on a laboratory set-up of a 7.45 cm3 capacity mini engine. The analyses of experimental data at different throttle settings reveal that there existed a varied range of rich and lean misfiring limits around a reference equivalence ratio that corresponds to the respective maximum indicated mean effective pressure. At the limiting equivalence ratios, cylinder pressure measurements showed a high degree of cycle-to-cycle variations. In some cases, a slow combustion or misfiring event preceded a rapid combustion. From the energy release analysis, it is observed that the combustion rate was very rapid in the initial phase which subsequently slowed down. Also, there are two peaks of energy release observed under rich mixture conditions. Copyright � 2015 SAE International. |
| Databáze: | OpenAIRE |
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