Motorcycle engine and motorcycle

The motorcycle engine comprises a magneto rotor and an isolator, and the isolator is installed in the magneto rotor. The isolator comprises a connecting ring body, and the connecting ring body can be in interference fit with the magnetor rotor so as to fix the isolator into the magnetor rotor. The connecting ring body in the isolator is in interference fit with the magnetor rotor to realize the fixed connection between the isolator and the magnetor rotor, so that the isolator can be directly assembled in the magnetor rotor in a press fitting manner, and in the process, the fixed connection between the isolator and the magnetor rotor can be realized without using other parts; therefore, the assembly between the isolator and the magnetor rotor is simplified, and the overall assembly efficiency of the motorcycle engine is improved. 本实用新型请求保护的摩托车发动机及摩托车，包括磁电机转子及单向器，单向器安装于磁电机转子内；单向器包括连接环体，连接环体能够与磁电机转子过盈配合，以将单向器固定至磁电机转子内。本申请利用单向器中连接环体与磁电机转子过盈配合来实现单向器与磁电机转子之间的固定连接，这样单向器可直接用压装的方式装配至磁电机转子内，在此过程，不需要使用其它零件即可实现单向器与磁电机转子之