Camshaft adjusting device

US7802548B2 · kind B2 · utility

Assignee

• Daimler AG · DE

Inventors

• Matthias Gregor · Stuttgart, DE
• Jens Meintschel · Bernsdorf, DE
• Tilmann R{hacek over (o)}mheld · Waiblingen, DE
• Petra Schulz · Eßlingen, DE
• Thomas Stolk · Tauberbischofsheim, DE
• Alexander Von Gaisberg-Helfenberg · Beilstein, DE

Key dates

• Filing date: Nov 13, 2007
• Grant date: Sep 28, 2010
• Expiry date: Feb 5, 2029

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T74/2102
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

In a camshaft adjusting device for adjusting a phase position of a camshaft, including a rotary actuator having a stator and at least one axially displaceable rotor and including a gear mechanism which is arranged operatively between two of at least three shafts, one of the shafts being a control shaft which is acted upon by the rotary actuator, one of the shafts being a drive shaft which is connected to the crankshaft, and one of the shafts being an output shaft which is connected to the camshaft, a compact locking structure is provided whereby at least two of the at least three shafts can be locked to one another in a rotationally fixed manner by a spring depending on operating conditions and released by an auxiliary coil which, upon energization, provides for axial movement of the rotor out of its locked position to permit adjustment thereof.