1990-02-01

Simulation of Abnormal Fuel Injection in Diesel Engines 900345

Abnormal fuel injection in light-duty, high-speed diesel engines was analyzed by developing a mathematical simulation program. It predicts the transient hydraulic phenomena and the dynamics of the mechanical components by applying the injection system design data. The results show the existence of marked changes of injection quantity against residual pressure, cavity content and pump speed, in the case of abnormal fuel injection. Closer observation reveals that the injection rate change from two-stage to one-stage causes a marked change in injection quantity.

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