Protective device of the spark plug, and protection device of the spark plug comprising such a protective member

摘要

The unit (100) has a peripheral groove (32) positioned at one end of the unit to connect the unit and a cylinder head (6). A peripheral dimension of the groove coincides with an internal peripheral dimension of a shaft (4) of a spark plug (2). A diameter (34) of periphery of the unit, at another end of the unit, connects the unit and a cylinder head-cover (8). An independent claim is also included for a spark plug protection device mounted in an engine of a vehicle.