Engine camshaft deactivation mechanism

Details Engine camshaft deactivation mechanism Engine camshaft deactivation mechanism

1993-07-06

1994-04-26

Cross, E. Rollins

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

123 9031, 123198F, 74568R, 192 483, 192 487, F01L 112, F02D 1306

Patent

active

053057198

ABSTRACT:
Several embodiments of an automotive engine camshaft deactivator that smoothly disconnect and reconnect a camshaft from the engine driveshaft with a low level impact force between the parts, the connection being made through a slippage friction clutch type mechanism that engages the two members in a manner providing slippage therebetween while the camshaft is being brought up to speed, whereby the camshaft lags behind the drive sprocket allowing the drive sprocket to cam a locking pin into a positive engagement relationship between the camshaft and crankshaft.

REFERENCES:
patent: 4389985 (1983-06-01), Huber et al.
patent: 4394854 (1983-07-01), Huber
patent: 4555003 (1985-11-01), Phillips
patent: 4627391 (1986-12-01), Derringer
patent: 4722308 (1988-02-01), Wall
patent: 4754727 (1988-07-01), Hampton
patent: 4794893 (1989-01-01), Masuda et al.
patent: 5172661 (1992-12-01), Brune et al.
patent: 5172662 (1992-12-01), Hampton

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