Method of producing a cylinder head of an internal combustion engine
AssigneeMercedes-Benz AG
InventorsFranz Ruckert, Jiri Vlach, Rudolf Reinhardt, Dieter Hahn
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Abstract
A method of producing a cylinder head of an internal combustion engine, comprising a cylinder head housing made of an aluminum material and having a base plate fitted into the combustion-chamber-side base wall of the cylinder head housing and made of a highly heat-resistant material. The combustion chamber plate is connected to the base wall of the cylinder head housing by friction welding.
Claims8
Method of producing a cylinder head of an internal combustion engine, comprising a cylinder head housing cast from an aluminum material and having gas-exchange channels, and a combustion chamber plate fitted into a combustion-chamber-side base wall of the cylinder head housing and made of a highly heat-resistant material, said method comprising the steps of:
- producing the cylinder head housing as a cylinder head blank having gas-exchange channels ending blind at a base wall on a combustion-chamber side thereof;
- producing the combustion chamber plate with a closed joining surface;
- connecting the combustion chamber plate to the base wall of the cylinder head housing by friction welding;
- and
- connecting the combustion chamber and the gas-exchange channels.
Cylinder head for an internal combustion engine comprising a cylinder head housing made of an aluminum material and a combustion chamber plate fitted into a combustion-chamber-side base wall of the cylinder head housing and made of a highly heat-resistant material, which cylinder head is produced friction welding said combustion chamber plate to said cylinder head housing, wherein the combustion chamber plate is made of a highly heat-resistant aluminum material and is reinforced by Al.sub.2 O.sub.3 fibers.
Cylinder head according to claim 5, wherein the combustion chamber plate has on the combustion-chamber side a layer reinforced by Al.sub.2 O.sub.3 fibers.
Cylinder head according to claim wherein pre-finished contours of joining surfaces on the combustion chamber plate and base wall have a relatively small, central surface area as initial contact surfaces of combustion chamber plate and base wall, a gap being formed between the joining surfaces which widens in the direction of the outer periphery of the combustion chamber plate.
Dependencies are inferred from the claim text.