Dosing valve for additives at risk of freezing, method for producing a dosing valve and motor vehicle
AssigneeEMITEC Gesellschaft fuer Emissionstechnologie mbH
InventorsJAN HODGSON, SVEN SCHEPERS, ROLF BRUECK
Life of this patent
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Abstract
A dosing valve includes at least a valve housing with a duct, a valve body being movable in order to open and close the dosing valve and a spring exerting a spring force on the valve body and thus holding the valve body in a rest position. The spring is supported on at least one calibration body. The valve body, the spring and the at least one calibration body are disposed in the duct. The at least one calibration body is fastened in the valve housing at least by using a cohesive or material connection. A method for producing the dosing valve and a motor vehicle having the dosing valve are also provided.
Claims10
A dosing valve, comprising:
- a valve housing having a duct formed therein;
- a valve body disposed in said duct and movable to open and close the dosing valve;
- a spring disposed in said duct and exerting a spring force on said valve body to hold said valve body in a rest position;
- and
- at least one calibration body disposed in said duct and supporting said spring, said at least one calibration body being fastened in said valve housing at least by a cohesive or material connection.
A method for producing a dosing valve, the method comprising the following steps:
- a) providing a valve housing having a duct formed therein;
- b1) inserting a valve body into the duct of the valve housing;
- b2) inserting a spring into the duct of the valve housing;
- b3) inserting a calibration body into the duct of the valve housing;
- c) tensioning the spring and causing the spring to exert a predefined force on the valve body;
- and
- d) producing at least one cohesive or material connection between the calibration body and the valve housing.
Dependencies are inferred from the claim text.