Patent ID: 6957641
Filing Date: 2005-10-25
Classification: F02B,F02D,G01D

Abstract:
1. An adjustment device for an internal combustion engine, comprising: a housing; a drive motor disposed in the housing; a first adjusting member drive shaft; a set of gears operationally connected to the first adjusting member drive shaft and operationally connected to the drive motor; a control device; a non-moving Hall switch disposed fixedly in the housing; and two pin magnets of differing polarity disposed in a fixed, pre-determined position to the first adjusting member drive shaft, and functionally-connected to the non-moving Hall switch, and disposed so the non-moving Hall switch detects a polarity change with movement of the magnets and produces at least one signal, wherein the Hall switch is operationally connected to send the at least one signal to the control device, wherein the at least one signal serves to preset the running direction of the drive motor.