Arrangement for changing the valve timing of an internal-combust

Details Arrangement for changing the valve timing of an internal-combust Arrangement for changing the valve timing of an internal-combust

1991-07-25

1992-08-18

Cross, E. Rollins

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

123 9031, 464 2, F01L 134, F01L 104

Patent

active

051389851

ABSTRACT:
An arrangement for changing the valve timing of an internal-combustion engine has a camshaft, which can be rotated relative to a shaft driving it. The camshaft has a phase converter with a piston which is hydraulically acted upon on both sides. In the camshaft, an axial recess is arranged in which an inserted pipe separates two spaces from one another. An on/off valve fed from the oil circulating system, in one position, via one of the spaces, supplies the piston with pressure oil so that this piston is axially shifted into a first end position and in the process rotates the camshaft. In a second position, the piston, by way of the second space is axially pushed back by pressure oil.

REFERENCES:
patent: 5058539 (1991-10-01), Saito et al.

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