| Summary: | 碩士 === 國立高雄科技大學 === 工業工程與管理系 === 107 === This project is discussing with air-assisted combustion device including an non-thermal plasma (NTP) system and water vapor injection system to get a cooling effect by way of thermoelectric module. Using NTP reactor to dissociate hydrogen and oxygen ions from gaseous water molecules making the engine produces to get a combustion-supporting effect, and other gaseous water molecules can also absorb the high heat of the engine.
This experiment provides three gaseous water molecular models including water vapor (25 oC), water vapor (25 oC) + NTP, and water vapor (5 oC) + NTP to compare with the original system exploring the effects of engine and exhaust emission of the engine.
From the results of this paper , the effect of gaseous water molecules on this experiment is as follows:
1. High rpm (7000 rpm) can improve engine performance at any air-fuel ratio.
2. The gaseous water molecules may cause engine knocking and cause no significant changes in engine performance
3. The combustion-supporting effect makes the gasoline in the engine more burning that the hydrocarbon emissions in exhaust emissions can be effectively reduced.
4. The gaseous water molecules increase engine combustion efficiency and cause combustion temperature increasing that the nitrogen oxide emissions in exhaust emissions increase.
5. At different air-fuel ratios, it can be known that the water vapor (25 °C) + NTP can help the engine performance, the HC emissions are also relatively reduced, and the combustion-supporting effect causes the NOX emissions increasing.The effect of gaseous water molecules from the results of this paper on this experiment is as follows:
1.High rpm (7000 rpm) can improve engine performance at any air-fuel ratio.
2.The gaseous water molecules may cause engine knocking and cause no significant changes in engine performance
3.The combustion-supporting effect makes the gasoline in the engine to more burn that the hydrocarbon emissions in exhaust emissions can be effectively reduced.
4.The gaseous water molecules increase engine combustion efficiency and cause combustion temperature increasing that the nitrogen oxide emissions in exhaust emissions increase.
5.At different air-fuel ratios, it can be known that the water vapor (25 °C) + NTP can help the engine performance, the HC emissions are also relatively reduced, and the combustion-supporting effect causes the NOX emissions increasing.
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