Cast iron camshaft for internal combustion engines

Details Cast iron camshaft for internal combustion engines Cast iron camshaft for internal combustion engines

1988-02-10

1989-06-13

Myhre, Charles J.

Internal-combustion engines

Poppet valve operating mechanism

Rod

74567, F01L 104

Patent

active

048382175

ABSTRACT:
A cast iron camshaft (1) for an internal combustion engine, has at one end a toothed pulley (3) engaging a toothed belt, and an internal tensile member including a screw threaded bolt (5). The bolt engages part of the camshaft (1) adjacent the end where the toothed pulley (3) is fixed, and extends along a longitudinal bore (6), and has a screw threaded end (8) which engages an internal thread (9) positioned adjacent the point where the bending moment exerted on the camshaft by the toothed belt tension P becomes zero. As a result, the alternating bending loads which would otherwise occur in the vicinity of the cross-section X--X which is in danger, are converted into a continuous compressive load, which can be sustained by the cast iron material more effectively than an alternating bending load.

REFERENCES:
patent: 2552724 (1951-05-01), Lang
patent: 4652724 (1987-03-01), Morita
patent: 4665766 (1987-05-01), Umeha

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