Internal-combustion engines – Transmission mechanism from piston – Crankshaft and connecting rod
Patent
1992-08-04
1993-03-30
Cross, E. Rollins
Internal-combustion engines
Transmission mechanism from piston
Crankshaft and connecting rod
1231974, 74579E, F02B 2532
Patent
active
051974258
ABSTRACT:
A connecting rod for connecting a reciprocating piston to a rotating crankshaft of an internal combustion engine includes a crankpin bearing designed to seize on a crankpin and stop the engine when the crankpin bearing is operating in a failure mode, as for example due to the loss of oil lubrication. The crankpin bearing design includes a pair of circumferential shoulders formed between the inner circumferential surface of the bearing and the end walls of the bearing which results in the inhibition of heat transfer from the inner circumferential surface toward the outer circumferential surface so that the crankpin bearing expands radially inwardly in a failure mode. Stopping of the crankshaft is also facilitated by varying the torque of each cap screw used to assemble the crankpin bearing.
REFERENCES:
patent: 3559503 (1971-02-01), Elsbett
patent: 3871245 (1975-03-01), McKindree
patent: 3908623 (1975-09-01), McWhorter
patent: 4114961 (1978-09-01), Pithie
patent: 4684267 (1987-08-01), Fetouh
patent: 4688446 (1983-08-01), Ishikawa
patent: 4773367 (1988-09-01), Kueny
Briggs & Stratton Corporation
Cross E. Rollins
Macy M.
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