Valve operating device for an internal combustion engine

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

1993-09-15

1995-02-14

Cross, E. Rollins

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

F01L 134

Patent

active

053885520

ABSTRACT:
A valve operating mechanism for an internal combustion engine for varying the operation of the valve dependent on engine operating conditions. A first rocker arm movable to follow a first cam and a second rocker arm movable to follow a second cam corresponding to a higher speed operating condition than that of the first cam are pivotally supported on a rocker arm shaft. A first connection switching device capable of switching the connection and disconnection between the third and first rocker arms and a second switching device capable of switching the connection and disconnection between at least one of the first and third rocker arms and the second rocker arm independently from the first connection switching device, are disposed at locations displaced circumferentially relative to the rocker arm shaft. Thus, it is possible to dispose a trigger mechanism and to dispose roller followers coaxially with the connection switching device, while avoiding the increase in width of the three rocker arms along their swinging axes.

REFERENCES:
patent: 4612884 (1986-09-01), Ajiki et al.
patent: 4869214 (1989-09-01), Inoue et al.
patent: 4887563 (1989-12-01), Ishida et al.
patent: 5042437 (1991-08-01), Sakuragi et al.
patent: 5085182 (1992-02-01), Nakamura et al.
English language Abstract of JP 60-252112.

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