Variable valve for internal combustion engine

Details Variable valve for internal combustion engine Variable valve for internal combustion engine

1992-11-30

1993-09-28

Cross, E. Rollins

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

123198F, F01L 134, F02D 1306

Patent

active

052479137

ABSTRACT:
A variable intake valve for internal combustion engine comprising: A cam shaft, a valve with a valve head, a valve spring and a valve stem. A valve tappet is slidably extended into a sleeve guide between the cam shaft and the top of the upper end of the valve stem. The upper end of the valve stem is slidably extended into the valve tappet and a valve tappet spring is mounted on the top of the upper end of the valve stem. Also the upper end of the valve stem has a socket suitable to receive a locking pin. A locking mechanism mounted on the valve tappet comprises a locking pin controlled by a spring. The locking pin is slidably extended into the socket of the upper end of the valve stem when the locking mechanism is activated.

REFERENCES:
patent: 4249489 (1981-02-01), Bruder et al.
patent: 4556025 (1985-12-01), Morita
patent: 4612884 (1986-09-01), Ajiki et al.
patent: 4765288 (1988-08-01), Linder et al.
patent: 4917056 (1990-04-01), Yagi et al.
patent: 5163389 (1992-11-01), Fujikawa et al.

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