Effective replacement carburetor by compact Port Fuel Injection system in small motorcycle engine

다국어 초록 (Multilingual Abstract)

Port Fuel Injection (PFI) was developed in 80s for automotive industry in order to improve engine performance and control effectively emission. It is now used widely in modem cars and some kinds of sport motorcycle. To take advantage of electronic, the premix of air-fuel and combustion process can be programmed and controlled very precisely. Therefore, emission and performance of engine can be improved significantly regarding to different working conditions. One of the main reason of PFI technology that makes it not popular on motorcycle is its complexity and high cost. This paper reports our recent efforts to develop a new and compact PFI system that can replace the in-used carburetor easily with less extra modification. The mixing process, included fuel injection timing, throttle shape design and parameters of ignition were all investigated. We minimized the number of sensors, built a new function to determine the crankshaft position therefore avoid to modify flywheel as previous experiments.

목차 (Table of Contents)

• Abstract
• 1. INTRODUCTION
• 2. PREVIOUS WORKS
• 3. EXPERIMENT DESIGN
• 4. CONCLUSION
• Acknowledgement
• References