Patent ID: 6817542
Filing Date: 2004-11-16
Classification: F02M,F16K

Abstract:
A valve for regulating fluids, comprising a piezo actor (2), a converter (3) for converting a piezo actor stroke, an inwardly opening control valve (11) disposed in a valve chamber (12), wherein said inwardly opening control valve (11) closes a connection to a low-pressure line (18) on a first valve seat (14), and a nozzle needle (20) arranged in a control chamber (21), wherein the movement of the nozzle needle is regulated by means of the control valve (11), wherein the control chamber (21) is connected with a high-pressure line (19) by means of a first supply throttle (22) and is connected with the valve chamber (12) by means of a throttle (23), wherein the valve chamber (12) is connected with the high-pressure line (19) by means of a second supply throttle (24) in order to enable a fast closing of the nozzle needle, wherein a second valve seat (16) is provided on the control valve (11), so that when the first valve seat (14) of the control valve (11) is opened, the connection from the valve chamber (12) to the high-pressure line (19) is closeable by means of the second supply throttle (24) on the second valve seat (16), and wherein the second valve seat (16) is formed as a flat seat, wherein said flat seat is closeable by a plate-shaped element (15).