Machine element or mechanism – Elements – Cranks and wrist pins
Patent
1991-10-29
1993-04-20
Bonck, Rodney H.
Machine element or mechanism
Elements
Cranks and wrist pins
74596, F16C 304
Patent
active
052032302
ABSTRACT:
A crankshaft for an internal-combustion engine has crankshaft webs provided with recesses. The recesses are molded into the crankshaft webs in each case symmetrically with respect to a vertical longitudinal center plane oppositely within a clear outer contour of the crankshaft webs. In the area of the recesses, the sections are constructed as a U-shaped profile with side legs. Between the recesses of the crankshaft webs arranged above one another, a reinforcing rib is arranged in the overlapping area of the crank pin and the journal. As a result of the recesses in each crankshaft web which are arranged in a targeted manner, a reduction in weight is made possible with effective mass compensation. The recesses are arranged above one another such that in the endangered area of each crankshaft web, a cross-section is built up that is as large as possible and can absorb the flexural and torsional load in a defined manner, despite the maximally large recesses.
REFERENCES:
patent: 1901358 (1933-03-01), Ryder
patent: 4356741 (1982-11-01), Schopf et al.
patent: 4881427 (1989-11-01), Yasutake
Bonck Rodney H.
Ing. h. c. F. Porsche AG
Massey Ryan W.
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