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US 6,199,523 B1Granted
Method for regulating the operation of an adjusting device
AssigneeAFT Atlas Fahrzeugtechnik GmbH
InventorsDirk Neubauer, Dirk Heintzen, Helmut Schilly, Harald Schmitz
Life of this patent
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Abstract
The phase of a camshaft in an internal combustion engine can be changed by the piston rod of a double-acting hydraulic cylinder and piston unit which is controlled by a valve having a spool movable axially by an electromagnet which is adapted to be influenced by a plurality of signals including those from the engine electronics.
Claims9
A method of selecting any one of a plurality of different positions of an adjustable phase selector, comprising the steps of adjusting the phase selector with at least one actuatable normally proportional hydraulic adjusting component;
- actuating the at least one adjusting component by a normally linear nonproportional actuating component;
- and utilizing at least one auxiliary function to compensate for at least one of (a) absence of proportionality of the at least one adjusting component and (b) absence of linearity of the actuating component.
Dependencies are inferred from the claim text.