Bearing device for internal combustion engines

Details Bearing device for internal combustion engines Bearing device for internal combustion engines

2005-05-03

2005-05-03

Hannon, Thomas R. (Department: 3682)

Bearings

Rotary bearing

Plain bearing

C384S912000

Reexamination Certificate

active

06886984

ABSTRACT:
A bearing device for internal combustion engines, comprising a crankshaft of an internal combustion engine and bearings supporting the crankshaft, and wherein the crankshaft is made of steel having not been subjected to surface hardening and having a structure, which is mainly composed of pearlite having the pro-eutectoid ferrite fraction of at most 3%, and is processed to have the surface roughness Rz of at most 0.8 μm, and wherein the bearings have an aluminum bearing alloy bonded to a back plate thereof and contain, as an alloy component thereof, at least Si particles of less than 4 mass %, whereby early abrasion and scratches of the crankshaft are suppressed to be equivalent to or less than abrasion loss and scratches of conventional DCI shafts.

REFERENCES:
patent: 4471030 (1984-09-01), Fukuoka et al.
patent: 5536587 (1996-07-01), Whitney, Jr.
patent: 6712914 (2004-03-01), Suzuki et al.
patent: 2 121 435 A (1983-12-01), None
patent: 2 358 872 A (2001-08-01), None
International Search Report, 4 pages.

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