Pre-chamber spark plug

The pre-chamber spark plug includes a housing extending along a longitudinal axis and including an inner surface. The pre-chamber spark plug also includes an insulator including an outer surface. The pre-chamber spark plug also includes a pre-chamber cover connected to the housing. The pre-chamber cover and the housing together form a pre-chamber. The pre-chamber spark plug also includes an annular reservoir defined between the outer surface of the insulator and the inner surface of the housing. The annular reservoir is spaced from the pre-chamber relative to the longitudinal axis. The pre-chamber spark plug also includes a plurality of protrusions disposed between the annular reservoir and the pre-chamber relative to the longitudinal axis. The plurality of protrusions at least partially define a plurality of flow channels therebetween. 预燃室火花塞包括：壳体，其沿纵向轴线延伸并包括内表面。预燃室火花塞还包括：绝缘体，其包括外表面。预燃室火花塞还包括：预燃室盖，其连接到壳体。预燃室盖和壳体一起形成预燃室。预燃室火花塞还包括：限定在绝缘体的外表面与壳体的内表面之间的环形储存器。环形储存器相对于纵向轴线与预燃室间隔开。预燃室火花塞还包括：多个突起，其相对于纵向轴线设置在环形储存器与预燃