Patent ID: 8297244
Filing Date: 2012-10-30
Classification: F01L

Abstract:
1. A device for variably adjusting timing control of gas exchange valves of an internal combustion engine, comprising: a drive element; an output element; a rotational angle limiting device; a control valve; at least two pressure chambers, acting in opposition to one another, it being possible to initiate a phase adjustment between the output element and the drive element by admitting hydraulic fluid to one of the pressure chambers while simultaneously discharging the other of the pressure chambers, the rotational angle limiting device, in a locked state, preventing a variation of phase position, the rotational angle limiting device in an unlocked state allowing a variation of the phase position, it being possible to bring the rotational angle limiting device from the locked to the unlocked state by the admission of hydraulic fluid, the control valve comprising a valve housing and a control piston, in each case at least one inlet connection, one outlet connection, a first working connection and a second working connection and a third working connection being formed on the valve housing, the inlet connection being connected to a hydraulic fluid source ( the first working connection, the second working connection and the control connection being axially offset in relation to one another and being designed not to overlap on the valve housing,