Camshaft for an internal combustion engine

Details Camshaft for an internal combustion engine Camshaft for an internal combustion engine

1979-05-10

1982-06-01

Feinberg, Craig R.

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

123 9031, 464 4, F01L 134

Patent

active

043322220

ABSTRACT:
A camshaft for an internal combustion engine having a hollow shaft carrying one or more cams or partial cams for rotation therewith and an inner shaft disposed within the hollow shaft and rotatable relative to the hollow shaft. The inner shaft has one or more cams or partial cams disposed outside the hollow shaft attached for rotation with the inner shaft through clearances in the hollow shaft. A camshaft drive includes a means responsive to the parameter characteristic of engine operating conditions for adjusting the rotational position of at least one of the shafts relative to the drive. The adjustment mechanism includes a radially extending guide on the drive, and an adjustment cam having a cam surface thereon and mounted on the guide to be radially displaceable therealong. A means is provided responsive to the desired engine parameter for varying the radial displacement of the adjustment cam. A cam follower bears on the cam surface and is coupled to one of the shafts for adjusting the relative rotational position of the one shaft.

REFERENCES:
patent: 1301972 (1919-04-01), Ricardo
patent: 1527456 (1925-02-01), Woydt et al.
patent: 3144009 (1964-08-01), Goodfellow
patent: 3516394 (1970-06-01), Nichols
patent: 3828579 (1974-08-01), Groom

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