# US 9,518,542 B2 · Injection valve

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- Number: US 9,518,542 B2
- Document ID: US9518542B2
- Status: Granted
- Kind: B2
- Application number: 14/426,433
- Filed: 2013-07-22
- Published: 2015-08-27
- Granted: 2016-12-13
- Earliest claimed: 2012-09-06
- Assignees: Robert Bosch GmbH
- Applicants: Robert Bosch GmbH
- Inventors: Philipp Rogler; Martin Scheffel
- Web page: https://patentgrep.com/patent/US9518542B2

## CPC

- F02M 51/0675: {the valve body having cylindrical guiding or metering portions, e.g. with fuel passages}
- F02M 51/061: {using electromagnetic operating means}
- F02M 51/066: {the armature and the valve being allowed to move relatively to each other or not being attached to each other}
- F02M 51/0685: {the armature and the valve being allowed to move relatively to each other or not being attached to each other}
- F02M 61/12: characterised by the provision of guiding or centring means for valve bodies
- F02M: SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF

## Abstract

An injection valve is provided for injecting a medium, especially for injecting fuel into a combustion chamber, including: a housing having at least one spray orifice on a discharge side, a solenoid coil, a magneto armature, which is linearly movable by the solenoid coil, a linearly movable valve needle for opening and closing the spray orifice, a first stop on a side of the magneto armature facing away from the discharge side, and a second stop on a side of the magneto armature facing the discharge side, the magneto armature being linearly movable between the first stop and the second stop with respect to the valve needle, and a guide element which is joined to the valve needle, an outer area of the guide element serving as guide for the linear motion of the magneto armature, and the second stop being an integral part of the guide element.

## Claims

### Claim 1

An injection valve for an injection of a medium, comprising:
a housing having at least one spray orifice on a discharge side;
a solenoid coil;
a magneto armature which is linearly movable by the solenoid coil;
a linearly movable valve needle for opening and closing the spray orifice;
a first stop on a side of the magneto armature and facing away from the discharge side;
a second stop on a side of the magneto armature facing the discharge side, the magneto armature being linearly movable with respect to the valve needle between the first stop and the second stop;
a guide element connected to the valve needle, wherein an outer area of the guide element serves as a guide for a linear motion of the magneto armature, and wherein the second stop is an integral part of the guide element.

### Claim 2 (depends on 1)

The injection valve as recited in claim 1, wherein the injection valve is for an injection of fuel into a combustion chamber.

### Claim 3 (depends on 1)

The injection valve as recited in claim 1, wherein the guide element is a one-piece turned or milled part together with the second stop.

### Claim 4 (depends on 1)

The injection valve as recited in claim 1, wherein the second stop projects at a right angle from the guide element.

### Claim 5 (depends on 1)

The injection valve as recited in claim 1, wherein one of the guide element is a sleeve which is placed on the valve needle, and the guide element is an element that lengthens the valve needle.

### Claim 6

An injection valve for an injection of a medium, comprising:
a housing having at least one spray orifice on a discharge side;
a solenoid coil;
a magneto armature which is linearly movable by the solenoid coil;
a linearly movable valve needle for opening and closing the spray orifice;
a first stop on a side of the magneto armature and facing away from the discharge side; a second stop on a side of the magneto armature facing the discharge side, the magneto armature being linearly movable with respect to the valve needle between the first stop and the second stop;
a guide element connected to the valve needle, wherein an outer area of the guide element serves as a guide for a linear motion of the magneto armature, and wherein the second stop is an integral part of the guide element and
a ring placed on the guide element, wherein the first stop is formed on the ring.

### Claim 7 (depends on 6)

The injection valve as recited in claim 6, wherein the ring is welded to the guide element.

### Claim 8 (depends on 6)

The injection valve as recited in claim 6, wherein the ring has an L-shaped cross-section.

### Claim 9 (depends on 6)

The injection valve as recited in claim 6, wherein the ring is welded to the guide element only on a side of the first stop facing away from the discharge side.

### Claim 10 (depends on 6)

The injection valve as recited in claim 6, wherein the guide element is welded to the valve needle.

### Claim 11 (depends on 10)

The injection valve as recited in claim 10, wherein the guide element is welded to the valve needle only on a side of the second stop facing the discharge side.