Electromagnetically actuatable valve

Patent metadata

Field	Value
Publication number	US-9702475-B2
Application number	US-201414286495-A
Country	US
Kind code	B2
Filing date	May 23, 2014
Priority date	May 24, 2013
Publication date	Jul 11, 2017
Grant date	Jul 11, 2017

Abstract

An electromagnetically actuatable valve is described, for controlling fluids, having an inner pole and a magnetic armature, the inner pole having a first end face oriented to the magnetic armature, and the magnetic armature having a second end face oriented to the inner pole, a first contact line and a second contact line being present between the first and second end face when the inner pole and the magnetic armature come into contact with one another, and a damping volume being present between the first and second contact line when the inner pole and the magnetic armature come into contact with one another.

First claim

What is claimed is:

1. An electromagnetically actuatable valve for controlling fluids, comprising:
an inner pole;
a magnetic armature, wherein:
the inner pole includes a first end face oriented to the magnetic armature, and
the magnetic armature includes a second end face oriented to the inner pole;

a first contact line; and
a second contact line,
wherein:
the first contact line and the second contact line are present between the first and second end faces when the inner pole and the magnetic armature come into contact with one another,
a damping volume is present between the first and second contact lines when the inner pole and the magnetic armature come into contact with one another,
the first end face of the inner pole includes a spherical region, and
the second end face of the magnetic armature includes at least one multiple cone having a first cone region and a second cone region.

2. The valve as recited in claim 1 , wherein each of the first and second contact lines is a circular line.

3. The valve as recited in claim 2 , wherein the circular line is concentric to a center axis of the valve.

4. The valve as recited in claim 1 , wherein each one of the first and second end faces includes a flat region, each flat region being perpendicular to a longitudinal axis of the valve.

5. The valve as recited in claim 1 , wherein the inner pole and the magnetic armature contact one another exclusively at the first and second contact lines.

6. The valve as recited in claim 1 , wherein:
the second end face of the magnetic armature includes a spherical region,
the magnetic armature includes a guide region situated in a plane that is situated perpendicular to a longitudinal axis of the valve, and
a midpoint of the spherical region is situated in the plane.

7. The valve as recited in claim 1 , further comprising:
a valve needle to which the magnetic armature is connected, wherein the valve needle is guided in the inner pole.

8. The valve as recited in claim 1 , wherein the first and second end faces of the inner pole and of the magnetic armature do not have a wear-resistant layer.

9. An electromagnetically actuatable valve for controlling fluids, comprising:
an inner pole;
a magnetic armature, wherein:
the inner pole includes a first end face oriented to the magnetic armature, and
the magnetic armature includes a second end face oriented to the inner pole;

a first contact line; and
a second contact line, wherein:
the first contact line and the second contact line are present between the first and second end faces when the inner pole and the magnetic armature come into contact with one another,
a damping volume is present between the first and second contact lines when the inner pole and the magnetic armature come into contact with one another,
the first end face of the inner pole includes a multiple cone having at least a first cone region and a second cone region,
the second end face of the magnetic armature includes a spherical region, and
the spherical region of the second end face of the magnetic armature fits into the multiple cone, so that a first surface of the first cone at least partially contacts the spherical region, and wherein a second surface of the second cone at least partially contacts the spherical region.

10. The valve as recited in claim 9 , wherein each of the first and second contact lines is a circular line.

11. The valve as recited in claim 10 , wherein the circular line is concentric to a center axis of the valve.

12. The valve as recited in claim 9 , wherein each one of the first and second end faces includes a flat region, each flat region being perpendicular to a longitudinal axis of the valve.

13. The valve as recited in claim 9 , wherein the inner pole and the magnetic armature contact one another exclusively at the first and second contact lines.

14. The valve as recited in claim 9 , wherein:
the second end face of the magnetic armature includes a spherical region,
the magnetic armature includes a guide region situated in a plane that is situated perpendicular to a longitudinal axis of the valve, and
a midpoint of the spherical region is situated in the plane.

15. The valve as recited in claim 9 , further comprising:
a valve needle to which the magnetic armature is connected, wherein the valve needle is guided in the inner pole.

16. The valve as recited in claim 9 , wherein the first and second end faces of the inner pole and of the magnetic armature do not have a wear-resistant layer.

Assignees

• Bosch Gmbh Robert

Inventors

• Scheffel Martin
• Rogler Philipp
• Abel Joerg
• Pohlmann Jens
• Massoni Anna Salvat

Classifications

• F02M2200/09

  Fuel-injection apparatus having means for reducing noise · CPC title

• F02M51/0614

  characterised by arrangement of electromagnets or fixed armature · CPC title

• F02M2200/304

  using hydraulic means · CPC title

• F02M51/0671 Primary

  the armature having an elongated valve body attached thereto · CPC title

• F02M2200/02

  Fuel-injection apparatus having means for reducing wear · CPC title