Crankshaft bearing
AssigneeDr. Ing.h.c.F. Porsche Aktiengesellschaft
InventorsRobert Mueller, Johannes Wuest
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Abstract
A crankshaft bearing for internal-combustion engines is provided in an internal-combustion engine housing made of a light metal alloy and comprises a bearing bore for a crankshaft journal of a crankshaft. The crankshaft bearing is provided with a device that reduces the increase in bearing play that occurs during the operation of the internal-combustion engine. This device includes a compensating element which is provided between the bearing bore and the crankshaft journal and has a relatively high coefficient of expansion.
Claims24
Crankshaft bearing for internal combustion engines provided in a housing of the internal combustion engine that comprises a light metal alloy, comprising a bearing bore for a crankshaft journal of a crankshaft, and a bearing play reducing device,
- provided between a crankshaft journal and the bearing bore to thereby form a slide bearing for the crankshaft journal, said bearing play reducing device including an annular compensating element surrounding the crankshaft journal, said compensating element being made of a material with a relatively higher coefficient of thermal expansion then material of the housing and crankshaft journal.
Crankshaft bearing for internal combustion engines provided in a housing of the internal combustion engine that comprises a light metal alloy, comprising a bearing bore for a crankshaft journal of a crankshaft, and a bearing play reducing device provided between a crankshaft journal and the bearing bore, said bearing play reducing device including an annular compensating element surrounding the crankshaft journal, said compensating element being made of a material with a relatively high coefficient of thermal expansion,
- wherein a bearing shell is disposed between the compensating element and the crankshaft journal,and
- wherein the bearing shell and the compensating element form a module.
Dependencies are inferred from the claim text.