抄録
The possibility of wear reduction to the injector nozzle and of fuel leakage reduction from the injector is examined by using fatty acids and polymer type additives. The newly developed wear test equipment is used because of the implementation of an actual injector and DME as a fuel. A HFRR (High Frequency Reciprocating Rig) is also used to select a suitable concentration of additive. As a result, the blend additives are effective for reducing wear at the needle tip and decreasing the possibility of leakage to almost nothing from the injector. Furthermore, the effect of the impurities in DME is also examined in this study. A result shows the corrosion is caused by impurities of Methanol and water in DME.
