Patent ID: 6609486
Filing Date: 2003-08-26
Classification: F01L

Abstract:
A device for changing the control times of gas exchange valves in an internal combustion engine, comprising:a crankshaft driven component fixed to a crankshaft of the internal combustion engine and driven by the crankshaft, and a camshaft component fixed to a camshaft, the crankshaft driven component and the camshaft component are connected to each other for power transmission through at least two pressure chambers located inside the device that are acted upon either alternately or simultaneously by hydraulic pressure, upon the pressure chambers being acted upon, the camshaft component rotates relative to the crankshaft driven component so that a hydraulic adjustment takes place between the two components, and the relative rotation or hydraulic adjustment also takes place between the crankshaft and the camshaft, an impulse generator wheel located outside the device and attached in a rotatably fast manner to the camshaft component for determination of the camshaft position relative to the crankshaft position along an axial side, a spring attached to the crankshaft driven component and the camshaft component fixed to the camshaft to rotate the camshaft to a preferred position for starting the internal combustion engine when the internal combustion engine is shut down, wherein the spring is placed outside the device in a hollow space located between the impulse generator wheel and an axial side facing it, and the spring is enclosed at least on two sides by the impulse generator wheel.