Device for adjusting the phase position between the camshaft and the crankshaft

Abstract

A device for adjusting the phase position between a camshaft and a crankshaft is provided. A quick and precise electronic adjustment for mechanical adjustment devices for adjusting the phase position between a camshaft and a crankshaft have previously not been known. The adjustment device is a component of an electronic circuit, either automatically adjusting the desired phase position directly or indirectly via another parameter, with the circuit including at least one loop between the control device and the adjustment path, by which a quick and precise adjustment can be achieved. Such arrangements are needed for a quick and precise adjustment of the phase position of a camshaft in reference to a crankshaft in internal combustion engines.

1 . An electronically driven mechanical adjustment device for adjusting a phase position (φ) between a camshaft and a crankshaft, comprising an adjuster that is part of an electronic circuit, for automatically adjusting a desired phase position (φ) between the camshaft and the crankshaft, and the circuit including at least one loop, in which an output value is fed back to the input.  
   
   
       2 . An adjustment device according to  claim 1 , wherein the electronic circuit includes a compensation for variable disturbances ( 2 ).  
   
   
       3 . An adjustment device according to  claim 1 , wherein the electronic circuit includes several control loops, nested parallel in a cascading fashion, with at least one circuit being superordinate to another one.  
   
   
       4 . Control device according to  claim 1 , wherein the circuit in which the adjustment device is arranged includes a state control ( 10 ,  11 ).