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US 10,975,821 B2Granted
Injection device for metering a fluid and motor vehicle having such an injection device
AssigneeVitesco Technologies GmbH
InventorsDejan Jovovic, Anatoliy Lyubar
Life of this patent
Estimating the term…
Abstract
An injection device for metering a fluid, having the following: a valve, which has a valve needle and a valve seat; a nozzle shaft, which surrounds the valve needle and which holds a volume of the fluid; and an inlet chamber, which adjoins the nozzle shaft on the side of the nozzle shaft facing away from the valve and which has a flow connection to the nozzle shaft. The injection device has at least one compressible volume compensation element, which is filled with a gas and which, within the injection device, is in contact with the fluid.
Claims7
An injection device for metering a fluid, comprising:
- a valve, which has a valve needle and a valve seat;
- a nozzle shaft, which surrounds the valve needle and which holds a volume of the fluid;
- an inlet tube;
- an inlet chamber formed by the inlet tube, which adjoins the nozzle shaft on the side of the nozzle shaft facing away from the valve and which has a flow connection to the nozzle shaft;
- at least one compressible volume compensation element, which is filled with a gas, the at least one compressible volume compensation element located in the inlet chamber and is a wall lining of the inlet tube;
- and
- a wall region, the wall region being part of the at least one compressible volume compensation element, the wall region being composed of a martensitically hardened steel;
- wherein the at least one compressible volume compensation element is in contact with the fluid.
5 more elements
Dependencies are inferred from the claim text.