Valve operating apparatus for an internal combustion engine

Details Valve operating apparatus for an internal combustion engine Valve operating apparatus for an internal combustion engine

1987-10-13

1988-11-29

Wolfe, Willis R.

Internal-combustion engines

Poppet valve operating mechanism

Rocker

123 9016, 123 9039, F01L 118, F01L 134, F01L 126

Patent

active

047873469

ABSTRACT:
Apparatus for maintaining the cam follower for operating a valve for an internal combustion engine in biased engagement against the cam includes a first spring operative to bias the cam follower under a low speed engine operating condition and a second spring series-connected to the first spring and having a spring constant greater than that of the first spring operative to bias the cam follower under a high speed engine operating condition.

REFERENCES:
patent: 2829540 (1958-04-01), Niemeyer
patent: 4537165 (1985-08-01), Honda et al.
patent: 4567861 (1986-02-01), Hara et al.
patent: 4615307 (1986-10-01), Kodama et al.
patent: 4656977 (1987-04-01), Nagahiro et al.

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