ELEKTROMAGNETISCHES STEUERVENTIL FUER ABGASRUECKFUEHRUNG

摘要

A solenoid actuated valve for controlling the flow of exhaust gas recirculated to the induction pipe of an internal combustion engine, particularly of a motor vehicle, has a valve closure assembly which is spring biassed closed and opened when current is applied to a solenoid device (10) and which is additionally loaded by a pressure balancing element, for example a diaphragm (20), whose force effect is approximately equal, but in the opposite direction, to that caused by pressure differences across the valve when it is closed, that is when the plate (5) abuts with the valve seat (6). The pressure balancing element is located such that one side of it is exposed to the pressure upstream of the closure assembly and the other side is exposed either to the downstream pressure or to atmospheric pressure. A valve guide (8) is supported in the valve housing (2) by way of a spherical bearing (33).