Cylinder breathing of the cylinder head gasket

Specially shaped eddy current sensors are integrated directly in the crankcase where they measure, for example, the expansion of the cylinder head gasket during the stroke. Pressures of up to 50 bar are produced for every ignition of a cylinder, which slightly raise a tightly bolted cylinder head. This movement is compensated for by the cylinder head gasket, which is why it is referred to as “cylinder head gasket breathing”. How far the cylinder head moves is measured by eddy current sensors. This data provides information about the durability of the gasket and save customers from fatal engine damage.

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