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US 6,186,474 B1Granted
Injection valve with a compensating surface
AssigneeSiemens Aktiengesellschaft
InventorsJohannes Fitzner, Jürgen Rink
Life of this patent
Estimating the term…
Abstract
A compensating element is disposed between a piezoelectric actuator and one or more transmission elements. The compensating element has a curved surface that bears against the piezoelectric actuator. The compensating element compensates for both a tilting of the piezoelectric actuator and, if two transmission elements are provided, for a difference in an overall height of the transmission elements.
Claims12
An actuator assembly for an injection valve of an internal combustion engine, comprising:
- a housing;
- an actuator disposed in said housing and movably guided in said housing along a given direction of movement;
- a controlling element moveably guided along said given direction of movement and being operatively connected to said actuator via at least one partially curved surface;
- a compensating element moveably disposed in said housing between said controlling element and said actuator, said actuator and said controlling element bearing against said compensating element and said compensating element being formed with said at least one partially curved surface;
- and
- said compensating element, in a region bearing against one of said actuator and said controlling element, having a curvature inclined to said respective actuator or controlling element, such that a bearing point at which said compensating element bears against said one of said actuator and said controlling element is fixed exactly and is not displaced upon a tilting of said one of said actuator and said controlling element in any direction but said given direction of movement.
3 more elements
An actuator assembly for an injection valve of an internal combustion engine, comprising:
- a housing;
- an actuator with at least one partially curved surface, said actuator disposed in said housing and movably guided in said housing along a given direction of movement;
- and
- a controlling element moveably guided along said given direction of movement and being operatively connected to said actuator via said at least one partially curved surface of said actuator;
- a compensating element moveably disposed in said housing between said controlling element and said actuator;
- said actuator and said controlling element bearing against said compensating element;
- and
- said compensating element, at least in a region wherein one of said actuator and said controlling element bears against said compensating element, being formed with a partially curved surface inclined towards said one of said actuator and said controlling element, so that a respective bearing point is fixed exactly and is not displaced upon a tilting of said one of said actuator and said controlling element in any direction but said given direction of movement.
5 more elements
An actuator assembly for an injection valve of an internal combustion engine, comprising:
- a housing;
- an actuator disposed in said housing and movably guided in said housing along a given direction of movement;
- a controlling element with at least one partially curved surface, said controlling element moveably guided along said given direction of movement and being operatively connected to said actuator via said at least one partially curved surface;
- a compensating element moveably disposed in said housing between said controlling element and said actuator;
- said actuator and said controlling element bearing against said compensating element;
- and
- said compensating element, at least in a region wherein one of said actuator and said controlling element bears against said compensating element, being formed with a partially curved surface inclined towards said one of said actuator and said controlling element, so that a respective bearing point is fixed exactly and is not displaced upon a tilting of said one of said actuator and said controlling element in any direction but said given direction of movement.
4 more elements
Dependencies are inferred from the claim text.