Valve

• US 20190316687A1
• Filed: 12/13/2017
• Published: 10/17/2019
• Est. Priority Date: 12/22/2016
• Status: Active Grant

• Current Assignee: Vitesco Technologies GmbH (Continental AG)
• Original Assignee: CPT Group GmbH (Continental AG)
• Inventors: BONANNO, Rosario
• Granted Patent: US 11,060,619 B2
• Time in Patent Office: Days
• CPC Class Codes: F02B 37/16 by bypassing charging air
• CPC Class Codes: F16K 1/46 Attachment of sealing rings
• CPC Class Codes: F16K 1/465 to the valve seats
• CPC Class Codes: F16K 31/0655 Lift valves
• CPC Class Codes: F16K 31/0686 Braking, pressure equilibration, shock absorbing
• CPC Class Codes: F16K 31/0693 Pressure equilibration of the armature
• CPC Class Codes: F16K 39/024 using an auxiliary valve on the main valve

Abstract

The invention relates to a valve having a housing 1, a solenoid 5 arranged in the housing 1, a pin 7 movable by the solenoid, a piston 8 connected to the pin 7, and a seal. The piston 8 is composed of metal and has a seal 14 composed of a different material than the piston 8, wherein the seal 14 is arranged in the crown region 12 of the piston 8.

Claims

1-11. -11. (canceled)

12. A valve comprising:

a housing (1);

a solenoid (5) arranged in the housing (1);

a pin (7) movable by the solenoid (5);

a piston (8) connected to the pin (7), the piston (8) having a crown region; and

a seal (14) arranged in the crown region of the piston (8), the seal (14) having a sealing surface (15),

wherein the piston (8) is made of metal and the seal (14) is made of a different material than the piston (8).

13. The valve as claimed in claim 12, wherein the piston (8) is made of high-grade steel.

14. The valve as claimed in claim 12, wherein the seal (14) comprises an Ethylene Propylene Diene Monomer (EPDM) rubber, or a Polyphthalamide (PPA) plastic.

15. The valve as claimed in claim 14, wherein the seal (14) is of annular form and, on its side facing away from the sealing surface (15), has 3 to 12 integral moldings (22), each of which extends through a respective one of plural apertures (23) arranged in the crown (12) of the piston (8).

16. The valve as claimed in claim 15, wherein the integral moldings (22) have, at their free end, a material accumulation (29) forming an undercut with respect to the respective apertures (23), the material accumulation (29) being generatable during production of the seal (14) or by retroactive hot calking.

17. The valve as claimed in claim 14, wherein:

the piston (8) has an inwardly directed flanged portion (26) in a region of the crown (12),

the seal (14) bears against the flanged portion (26),

a metal part (12) forming the crown of the piston (8) bears against a side of the seal (14) that is averted from the flanged portion (26), and

the metal part (12) is connected to the piston (8).

18. The valve as claimed in claim 12, wherein the seal (14) has a seal part (21) arranged outside the piston (8), the seal part (21) has a thickness of at least one selected from the group of:

0.5 mm to 10 mm and 1 mm to 5 mm.

19. The valve as claimed in claim 17, wherein the piston (8) is welded to the metal part (12).

20. The valve as claimed in claim 12, wherein the piston (8) is welded to the pin (7).

21. The valve as claimed in claim 12, wherein the piston (8) is riveted to the pin (7).

22. The valve as claimed in claim 12, wherein the metal of the piston (8) has a thickness of at least one selected from the group of:

0.3 mm to 0.8 mm, 0.4 mm to 0.6 mm and 0.5 mm.

23. The valve as claimed in claim 13, wherein the high-grade steel is a chromium-nickel steel.