Abstract
A fuel injection pump for L28/32H middle speed engine was manufactured by the domestic technology, then measured its major parts in order to analyze precisely its performance. The experimental apparatus had been made especially to evaluate the performance of fuel injection pumps manufactured by a domestic “P” corporation and a foreign “N” corporation and then the injection pressure and the injection quantity of those pumps had been investigated and compared with each other. As a result, principal dimensions, injection times, pressure delivery speeds, max. injection pressures and injection quantities of fuel which could affect the engine performances were very similar to each other. While residual pressures in fuel injection pump of P corporation was higher than that in N corporation due to the force of the delivery valve spring.
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