针对舷外机用竖轴柴油机实际工况和转子式机油泵流量符合设计要求的前提下，

Under the premise that the actual working conditions of the vertical shaft diesel engine for outboard engines and the flow of the rotor oil pump meet the design requirements, the performance of the lubrication system cannot meet the needs of the diesel engine. In this paper, a lot of research on the influence of the rotor oil pump oil chamber structure on the performance of the diesel engine lubrication system is carried out. It is concluded that the optimization of the structure of the oil cavity can enhance the lubrication system to meet the actual working conditions of the diesel engine. By optimizing the structure of the oil cavity, the phenomenon of backflow of oil into and out of the oil cavity and the cross section of the oil cavity is prevented from being too large, thereby improving the volumetric efficiency, improving the size and trend of oil pressure, and optimizing the performance of the lubrication system. And verify the correctness and rationality of the proposed method through the whole machine test.

Under the premise that the actual operating condition and rotor oil pump flow of the vertical shaft diesel engine for the outboard engine meet the design requirements, the performance of the lubrication system can not meet the demand of the diesel engine. In this paper, a lot of research is made on the effect of the structure of the rotor oil pump oil cavity on the performance of the diesel engine lubrication system. The optimization of oil cavity structure can enhance the lubrication system to meet the actual operating conditions of the diesel engine. By optimizing the structure of the oil cavity, the time and cross-section of the incoming oil chamber connection are avoided, resulting in the reverse flow of oil back into the oil cavity, so as to improve the volume efficiency, improve the oil pressure size and trend, and optimize the performance of the lubrication system. And through the whole machine test to verify the correctness and rationality of the proposed method.

On the premise that the actual working condition of the outboard vertical shaft diesel engine and the flow of the rotor type oil pump meet the design requirements, the performance of the lubrication system can not meet the needs of the diesel engine. In this paper, the influence of oil cavity structure of rotor type oil pump on the performance of diesel engine lubrication system is studied. It is concluded that the optimization of the oil cavity structure can enhance the lubrication system and make it meet the actual working conditions of the diesel engine. Through the optimization of the structure of the oil chamber, the phenomenon of oil backflow back to the oil chamber caused by the excessive time and cross-section of the inlet and outlet oil chambers is avoided, so as to improve the volume efficiency, improve the size and trend of the oil pressure, and optimize the performance of the lubrication system. The correctness and rationality of the proposed method are verified by the whole machine test.<br>