Device for adjusting the phase angle of a camshaft of an interna

Details Device for adjusting the phase angle of a camshaft of an interna Device for adjusting the phase angle of a camshaft of an interna

1998-09-16

1999-11-09

Lo, Weilun

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

123 9031, F01L 1344

Patent

active

059793821

ABSTRACT:
A device for adjusting the phase angle of a camshaft of an internal combustion engine relative to the camshaft driving gear, includes an adjusting element which engages with both a member supporting the drive gear and a member rigidly connected to the camshaft, an axial movement of the adjusting element effecting a turning of the camshaft relative to its drive gear, and further including an electric motor for axially displacing the adjusting element, which motor is rigidly connected to the camshaft and is supplied with power through slip rings. Reliable adjustment is obtained in a simple manner by providing the adjusting element with a first threaded section which meshes with a threaded section of the member rigidly connected to the camshaft, and a second threaded section which meshes with a threaded section of the member supporting the camshaft drive gear.

REFERENCES:
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patent: 4967701 (1990-11-01), Isogai et al.
patent: 5111780 (1992-05-01), Hannibal
patent: 5117784 (1992-06-01), Schechter et al.
patent: 5365898 (1994-11-01), Mueller
patent: 5509384 (1996-04-01), Schmid
patent: 5673659 (1997-10-01), Regueiro
patent: 5803030 (1998-09-01), Cole

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