Split connecting rod, engine and vehicle

Details Split connecting rod, engine and vehicle Split connecting rod, engine and vehicle

2007-01-09

2007-01-09

McMahon, Marguerite (Department: 3747)

Internal-combustion engines

Transmission mechanism from piston

Crankshaft and connecting rod

C029S888091

Reexamination Certificate

active

11000561

ABSTRACT:
A split connecting rod includes a fracture start groove that extends in an axial direction X and is located at the approximate center of each of opposing positions on an inner surface of a crank pin opening. A bearing securing groove is provided on either or both of the opposing positions on the inner surface of the crank pin opening. Notches are provided, respectively, at both ends of each of the opposing positions in the axial direction X on the inner surface of the crank pin opening. The fracture start groove has a stress concentration factor that is greater than those of the notches and the bearing securing groove. Preferably, steel for use as the material of a connecting rod has a carbon content of about 0.05% to about 0.45% by weight, more preferably about 0.10% to about 0.35% by weight.

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