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US 2002/0153429 A1Published application
Injection nozzle
OwnerFriedrich Boeckinginventor
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OwnerFriedrich Boeckinginventor
Estimating the term…
In an injection nozzle (10) for a fuel injection system, having a pressure chamber (26) which is provided with a fluid inlet (24) and a fluid outlet (30), having a valve seat (32) around the fluid outlet, having a valve element (34) which can contact the valve seat, so that the fluid outlet is closed, and having a piezoelectric actuator (40), which is provided with an actuation extension (42) that can engage the valve element, a temperature compensation is to be attained at little effort. To that end, it is provided that a displaceable wall part (28) is provided, on which the valve seat is embodied and which defines the pressure chamber on the side of the valve seat, and that a temperature compensation element (44) is provided, which cooperates with the displaceable wall part and displaces it in accordance with a temperature-dictated change in length of the piezoelectric actuator.
An injection nozzle (10) for a fuel injection system, having a pressure chamber (26) which is provided with a fluid inlet (24) and a fluid outlet (30), having a valve seat (32) around the fluid outlet, having a valve element (34) which can contact the valve seat, so that the fluid outlet is closed, and having a piezoelectric actuator (40), which is provided with an actuation extension (42) that can engage the valve element, characterized in that a displaceable wall part (28) is provided, on which the valve seat is embodied and which defines the pressure chamber on the side of the valve seat, and that a temperature compensation element (44) is provided, which cooperates with the displaceable wall part and displaces it in accordance with a temperature-dictated change in length of the piezoelectric actuator.
Dependencies are inferred from the claim text.