Arrangement for changing the relative rotating position of shaft

Details Arrangement for changing the relative rotating position of shaft Arrangement for changing the relative rotating position of shaft

1991-07-25

1992-12-15

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

051707560

ABSTRACT:
An arrangement for changing the relative rotating position of shafts in an internal-combustion engine has a camshaft, which can be rotated with respect to a shaft driving it, that has a phase converter with a piston which is acted upon hydraulically on both sides. The sprocket wheel driving the camshaft has an external toothing. A toothing, which is connected with the camshaft via a hollow shaft, is constructed as an internal toothing. Corresponding toothings of the piston engage in both toothings. 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 oil pressure so that it is axially shifted into a first end position and, in the process, turns the camshaft. In a second position, the piston is axially pushed back by the second space with oil pressure.

REFERENCES:
patent: 4787345 (1988-11-01), Thoma
patent: 4903650 (1990-02-01), Ohlendorf et al.
patent: 5012774 (1991-05-01), Strauber et al.
patent: 5058539 (1991-10-01), Saito et al.
patent: 5067450 (1991-11-01), Kano et al.
patent: 5088456 (1992-02-01), Suga

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