2013 Fiscal Year Final Research Report
Development of Compression Ignition Combustion Control by Use of Two Different Reactivity Fuels and Its Application
| Project/Area Number |
23760195
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Thermal engineering
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| Research Institution | Kanazawa Institute of Technology |
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Principal Investigator |
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| Project Period (FY) |
2011 – 2012
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| Keywords | 内燃機関 / 予混合圧縮着火 / 燃料 |
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| Research Abstract |
This study has explored the possibility of combustion control in premixed charge compression ignition engines which use two different reactivity fuels.
One candidate is a system in which less reactive fuel is supplied from intake port while more reactive one is directly injected into a combustion chamber. In this system, we developed an understanding of the relation between reactivity of two fuels and overall combustion rate in a chamber and in addition, the experimental result shows that the chemical reaction of premixed fuel affect the ignition of directly-injected fuel.
Another candidate is one in which more reactive fuel is used as pre-mixture and direct injection is used to supply less reactive fuel. It is found that this system can dramatically reduce unburned emissions yielded from pre-mixture and simultaneous higher thermal efficiency and lower pollutant emissions can be achieved by combining with exhaust gas recirculation.
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