|
| Study on Dual-Fuel Injection Coordination Control and Emission Performance of Diesel-Gasoline Reactivity Controlled Compression Ignition Engines |
| DOI：10.13949/j.cnki.nrjgc.2020.02.008 |
| Key Words:diesel engine reactivity controlled compression ignition（RCCI） gasoline coordination control emission |
|
| Hits: 4697 |
| Download times: 2117 |
| Abstract:4-cylinder high pressure common rail diesel engine test bench was modified to have reactivity controlled compression ignition(RCCI) combustion. A coordination-control strategy of injection for RCCI combustion was developed to adjust gasoline and diesel injections at the whole operating conditions. The effects of different gasoline fraction on the combustion and emissions of diesel engine operated with RCCI mode at different operating conditions were studied. The results show that the diesel/gasoline RCCI combustion control strategy can achieve an efficient and clean combustion. With the increase of gasoline fraction, the peak in-cylinder pressure increases gradually and appears late, the peak heat release rate decreases, the combustion duration is prolonged, the brake specific fuel consumption(BSFC) declines, and the effective thermal efficiency becomes great. And the emissions of hydrocarbon and CO increases remarkably due to the unburned fuel at low load operating conditions. Operating with the RCCI mode, the engine has higher volatility and better overall fuel-air mixing, resulting in improved combustion and reduced nitrogen oxide(NOx) and soot emissions. A good trade-off between NOx and soot emissions is achieved perfectly. |
| View Full Text View/Add Comment Download reader |
|
|
|