Valve timing drive for an internal combustion engine

Details Valve timing drive for an internal combustion engine Valve timing drive for an internal combustion engine

1982-04-29

1984-07-03

Cline, William R.

Internal-combustion engines

Poppet valve operating mechanism

Camshaft drive means

192 41R, 474101, 474148, F01L 102

Patent

active

044572697

ABSTRACT:
An engine camshaft is driven from the crankshaft through a timing chain such that the chain has a taut side and a slack side. A second chain is drive connected between the crankshaft and a sprocket member which is maintained on the camshaft by a one-way device. The second chain has a taut side and a slack side opposite the corresponding sides of the primary timing chain. During the engine operating cycle, a torque reversal occurs at the camshaft. The second chain prevents the torque reversal from loosening or overrunning the taut side of the primary timing chain. The one-way device permits adjustment of the primary timing chain due to wear while maintaining the taut side of the second chain.

REFERENCES:
patent: 3396988 (1968-08-01), Kroening

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