- 學位論文
部分串聯式混合動力機車研究
Investigation of Partial Power series Hybrid motorcycle
摘要
油電混合系統可以讓內燃引擎運轉在效率較高的運轉範圍，此範圍具備低燃油消耗及減少廢氣污染的優點。本文利用傳統CVT系統之機車，改裝成部分串聯式複合動力系統，其動力源為傳統內燃引擎及安裝於前輪的車輪馬達所組成的雙驅動系統。低速時引擎帶動發電機產生能量直接供給車輪馬達，所以此系統並不需要大電瓶來儲存或供給電能；中高速時轉換為傳統CVT系統驅動，避免引擎運轉在低負荷的運轉區域。 首先以數學模型進行反向性模擬，模擬傳統CVT系統機車及部分串聯系統行駛於行ECE-40行車型態的結果，其中PPS系統所改善的油耗約為15 %。機車實車測試中CVT系統結果為25.55 km/l，而PPS系統在15 km/h、20 km/h及25 km/h等三個不同的動力切換速度點，實車測試結果分別為28.52 km/l、28.09 km/l及29.04 km/l，有效減少10.4 %、9 %及12 %的油耗。
並列摘要
By using of the hybrid system, the engine can be operated at high efficient condition. The advantages of using hybrid system include low fuel consumption and emission. The purpose of this study is to retrofit the conventional CVT motorcycle to become a partial power series (PPS) system. In other words, it turns into two power sources. First one is internal combustion engine with original drive train, and the other one is wheel hub motor which was installed in front wheel. At low vehicle speed operation, the engine drives the generator directly to generate electric power for supplying wheel hub motor. A controller was employed to control the engine to adjust the required electric power for driving wheel hub motor. Therefore, the engine can be operated at high performance condition, and also the PPS system does not require a large battery to store or provide the energy. As the vehicle speed becomes higher, the motorcycle was shifted to the CVT system. First of all, this research uses the mathematic model to simulate the original CVT motorcycle and the PPS motorcycle at ECE-40 driving cycle test, the result shows that the fuel economy of using original CVT system and dual power sources system are 30.86 km/l and 36.29 km/l, respectively. That is the fuel economy can be improved 15% by using PPS system. Then, the experiment of ECE-40 driving test was performed on original CVT motorcycle as well as the PPS motorcycle. The fuel economy result from original CVT motorcycle is 25.55 km/l. As for the PPS system, three switching points were used which include 15 km/h, 20 km/h and 25 km/h. When the vehicle speed becomes higher than the switching point, the motorcycle will be shifted to CVT system. As a results, the fuel economy from using PSS are 25.52 km/l, 28.09 km/l and 29.04 km/l for switching points 15 km/h, 20 km/h and 25 km/h respectively. As predicted, the fuel economy can be improved by 10.4 %, 9 % and 12% for PPS system under these three switching points.