Internal-combustion engines – Poppet valve operating mechanism – With means for varying timing
Patent
1982-02-22
1984-11-27
Lazarus, Ira S.
Internal-combustion engines
Poppet valve operating mechanism
With means for varying timing
123 9027, 123 9045, 123 9044, 123 9043, F01L 134
Patent
active
044845464
ABSTRACT:
The variable valve operating mechanism comprises lower and upper rocker arms. The lower rocker arm is mounted for pivotal movement about a fixed axis and the upper rocker arm is mounted for pivotal movement about a shiftable axis. The free end of the lower rocker arm engages the valve to be actuated and the free end of the upper rocker arm engages various portions of the first rocker arm when the shiftable axis is spaced relatively far from the fixed axis. When the shiftable axis is moved toward the fixed axis, the valve lift starts to increase. By means of a curved cam surface, the duration or time that the valve remains open can be controlled. Provision is made for lubricating parts of the mechanism and provision is also made for adjusting certain parts of the mechanism so as to provide a specified amount of valve lash.
REFERENCES:
patent: 1441302 (1923-01-01), Schneider
patent: 2991616 (1961-07-01), Miller
patent: 3413965 (1968-12-01), Gavasso
patent: 3722484 (1973-03-01), Gordini
patent: 4397270 (1983-08-01), Aoyama
Bailey R. S.
Investment Rarities Incorporated
Lazarus Ira S.
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