Flywheel housing and engine

The utility model relates to the technical field of sealing, and discloses a flywheel casing and an engine, the flywheel casing comprises a casing body and a bowl-shaped plug anti-disengagement structure, the casing body is provided with an assembling face used for being matched with an engine body of the engine, and the bowl-shaped plug anti-disengagement structure comprises a protruding structure arranged on the assembling face; a bowl-shaped plug abutting face is formed on the end face, away from the shell, of the protruding structure. When the flywheel casing is assembled on the engine body, the abutting surface of the bowl-shaped plug abuts against the bowl-shaped plug, so that the bowl-shaped plug can be blocked and prevented from being separated from an oil duct of the engine body to cause sudden drop of oil pressure, and cylinder score and tile formation of an engine and even scrapping of the whole engine are avoided. 本实用新型涉及密封技术领域，公开一种飞轮壳及发动机，飞轮壳包括：壳体和碗形塞防脱出结构，所述壳体具有用于与发动机的机体配合的装配面，所述碗形塞防脱出结构包括设置于所述装