By using Nth harmonic method,the fuel cam profile of a medium speed diesel engine injection pump was fitted,and the results were analyzed.

• 利用N次谐波法对一台中速柴油机的油泵凸轮型线进行拟合,并对拟合结果进行了分析,指出使用N次谐波法时存在的一些问题,并对问题产生的原因进行了分析。