ディーゼル燃料噴射管内のキャビテーションに関する研究 : 第1報,負圧とキャビテーション気泡の同時計測

抄録

Recentry, high-pressure injection system have been used in many fuel injection pumps. This system is effectieve in improving fuel consumption, exhaust performance and so on. When the injection pressure is very high, however, cavitation erosions take place. Cavitation erosions in the fuel injection system of the diesel engine are very harmful to the performance and reliability of the engine. Hence it is difficult to adopt high-pressure injection. Cavitation phenomena depend on negative pressure. They have been studied from various up to now. However, there have been no reports on measuring negative pressure. So we trial manufactured a device to measure negative pressure exactly. We measure negative pressure at the same time as cavities by using a system to observe cavitation and a device to measure negative pressure. Then this report determines the relationship between negative pressure and cavities.