Coated piston and process for applying coating
AssigneeMahle GmbH
InventorsManfred Bauer, Manfred Ziegler
Life of this patent
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Abstract
A coated piston and a process for applying same to a piston of an internal combustion engine having a cylinder. The piston and cylinder are made primarily from a lightweight metal. Graphite bonded in cured resin is applied to the piston and forms a durable running layer.
Claims12
A coated piston of an internal combustion engine having a cylinder, the piston and cylinder being made of aluminum comprising:
- graphite particles bonded in cured resin applied to said piston and forming a durable running layer having a thickness in the range of 10-25 .mu.m, said graphite particles having a size in the range of 1 to 5 .mu.m and said graphite particles bonded in cured resin consisting of 30 percent to 60 percent graphite by weight.
A process for applying a coating to a piston of an internal combustion engine having a cylinder, comprising the steps of
- providing a piston and cylinder made of aluminum metal;
- and
- applying a coating of graphite bonded in cured resin to the piston to form a durable running layer having a thickness in the range of 10 to 25 .mu.m, said coating including graphite particles, said graphite particles having a size in the range of 1 to 5 .mu.m.
A coated piston of an internal combustion engine having a cylinder, the piston and cylinder being made of aluminum, comprising:
- graphite bonded in cured resin applied to said piston and forming a permanent durable running layer having a thickness in the range of 10 to 25 .mu.m, wherein said graphite consists of graphite particles having a size in a range of 1 to 5 .mu.m, said graphite bonded in cured resin consisting of at least 30 percent by weight.
Dependencies are inferred from the claim text.