Variable valve-timing apparatus in an internal-combustion engine

Details Variable valve-timing apparatus in an internal-combustion engine Variable valve-timing apparatus in an internal-combustion engine

1983-02-04

1985-01-22

Koczo, Michael

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

123 9017, F01L 134

Patent

active

044944969

ABSTRACT:
An apparatus for controlling valve timing in an internal-combustion engine. The apparatus includes a pair of sleeves inserted into each other. One of the sleeves is connected to the camshaft and the other sleeve is connected to a timing pulley which is connected to the crankshaft. One of the sleeves has diametrically opposed slits and the other sleeve has diametrically opposed slits located adjacent to the corresponding slits in the first sleeve. Abutment rollers are arranged in the slits and are mounted on an axially slidable slider. Movement of the slider causes the generation of an angular displacement between the sleeves, resulting in variable valve timing. A bearing unit is arranged between the inner and the outer sleeves.

REFERENCES:
patent: 1632223 (1927-06-01), Fey
patent: 2682260 (1954-06-01), Lantz
patent: 3945221 (1976-03-01), Miokovic
patent: 3978829 (1976-09-01), Takahashi et al.
patent: 4279131 (1981-07-01), Pringle

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