Device for changing the rotational position of a shaft relative

Details Device for changing the rotational position of a shaft relative Device for changing the rotational position of a shaft relative

1999-07-22

2000-10-10

Lo, Weilun

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

123 9031, 74568R, 464 2, F01L 1344

Patent

active

061290637

ABSTRACT:
A device for changing the rotational position of a shaft relative to a drive wheel has an adjusting device with two pressure chambers that act against one another. The chambers are pressurized by a pressure medium pump. The adjusting device includes an inner part with ribs that divides the chambers formed by the ribs of a compartmented wheel into corresponding pressure chambers. A plurality of depressions extending axially are machined into the circumferential surfaces of the compartmented wheel that faces the ribs of the inner part, which depressions serve to collect dirt particles carried by the pressure medium into the pressure chambers.

REFERENCES:
patent: 5836276 (1998-11-01), Iwasaki et al.
patent: 5937810 (1999-08-01), Sato et al.

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