Engine gas circuit sealing system and engine

The utility model provides an engine gas circuit sealing system and an engine, and the engine gas circuit sealing system comprises a plurality of gas inlet part gaskets which are arranged between a gas inlet manifold and a throttle body and between the gas inlet manifold and a cylinder cover; the cylinder gaskets are arranged between the cylinder body and the cylinder cover; the supercharger gaskets are arranged between the cylinder cover and the supercharger; and at least one catalyst gasket disposed between the supercharger and the catalyst. The engine gas circuit sealing system and the engine have the advantages of being simple in structure, easy to manufacture, convenient to use and the like, the engine gas circuit can be effectively sealed, and the manufacturing cost is reduced. 本申请提供发动机气路密封系统和发动机，其中，该发动机气路密封系统包括：多个进气部垫片，设置在进气歧管与节气门体之间，以及进气歧管与缸盖之间；多个汽缸垫片，设置在缸体与缸盖之间；多个增压器垫片，设置在缸盖与增压器之间；以及至少一个催化器垫片，设置在增压器与催化器之间。本申请的发动机气路密封系统和发动机具有结构简单、易于制造、使用方便等优点，使得发动机气路能够得到有效的密封，并且降低了制造成本。