Valve control system having an adjustable camshaft
AssigneeThyssenkrupp Presta Teccenter AG
InventorsJuergen Meusel, Michael Kunz
Life of this patent
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Abstract
A valve control system may include an adjustable camshaft that includes an outer shaft and an inner shaft that extends through the outer shaft. The valve control system may further include a phase shifter that comprises a first control element and a second control element that can be rotated relative to the first control element. The outer shaft and the inner shaft may each be connected with a control element. The valve control system may also include a stop coupled with the outer shaft in a torque-proof manner, as well as a counter-stop coupled with the inner shaft in a torque-proof manner. A maximal angle of rotation of the inner shaft in the outer shaft may be determined by the stop bordering on the counter-stop.
Claims20
A valve control system comprising:
- an adjustable camshaft including an outer shaft and an inner shaft that extends through the outer shaft;
- a phase shifter including a first control element and a second control element that is rotatable relative to the first control element, wherein the outer and inner shafts are each connected with one of the first or second control elements;
- a stop coupled with the outer shaft in a torque-proof manner;
- and
- a counter-stop coupled with the inner shaft in a torque-proof manner,
- wherein a maximal angle of rotation of the inner shaft in the outer shaft is determined by the stop bordering on the counter-stop, wherein the maximal angle of rotation of the inner shaft in the outer shaft is less than a maximal angle of rotation of the second control element relative to the first control element.
A valve control system comprising:
- an adjustable camshaft including an outer shaft and an inner shaft that extends through the outer shaft;
- a phase shifter including a first control element and a second control element that is rotatable relative to the first control element, wherein the outer and inner shafts are each connected with one of the first or second control elements;
- a stop coupled with the outer shaft in a torque-proof manner;
- a counter-stop coupled with the inner shaft in a torque-proof manner, wherein a maximal angle of rotation of the inner shaft in the outer shaft is determined by the stop bordering on the counter-stop;
- and
- adjustable cam elements that are received on the outer shaft so as to rotate, wherein the adjustable cam elements are connected with the inner shaft by bolts that pass through passages in the outer shaft, wherein the maximum angle of rotation of the inner shaft in the outer shaft is less than a maximal angle of rotation of the bolts in the passages.
Dependencies are inferred from the claim text.