Valve

• US 20190331248A1
• Filed: 12/13/2017
• Published: 10/31/2019
• Est. Priority Date: 12/22/2016
• Status: Active Grant

• Current Assignee: Carl Freudenberg KG, Vitesco Technologies GmbH (Continental AG)
• Original Assignee: CPT Group GmbH (Continental AG)
• Inventors: BONANNO, Rosario, PREUNER, Johannes, VASILICO, Alexander
• Granted Patent: US 11,181,204 B2
• Time in Patent Office: Days
• CPC Class Codes: F02B 37/16 by bypassing charging air
• CPC Class Codes: F02B 37/18 by bypassing exhaust from the inlet to the outlet of turbine or to the atmosphere
• CPC Class Codes: F02B 37/186 Arrangements of actuators or linkage for bypass valves
• CPC Class Codes: F16J 15/3204 with at least one lip
• CPC Class Codes: F16K 25/005 Particular materials for seats or closure elements
• 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
• CPC Class Codes: H01F 7/1607 Armatures entering the winding
• CPC Class Codes: Y02T 10/12 Improving ICE efficiencies

Abstract

A valve includes a housing, a solenoid arranged in the housing, a pin movable by the solenoid, a pot-shaped piston connected to the pin, and a first seal arranged between the housing and the pot-shaped piston. The pot-shaped piston has, at least in the region of its open end, a radially peripheral second seal that bears against a second housing part when the valve is closed, the second housing part being connected to the housing.

Claims

1-12. -12. (canceled)

13. A valve comprising:

a housing (1);

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

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

a pot-shaped piston (8) connected to the pin (7), the pot-shaped piston (8) having a base (9) and an open end;

a first seal (10) arranged between the housing (1) and the pot-shaped piston (8),

wherein the pot-shaped piston (8) has, at least in a region (14) of its open end, a radially peripheral second seal (15) that bears against a second housing part (13) when the valve is closed, the second housing part (13) being connected to the housing (1).

14. The valve as claimed in claim 13, wherein the second seal (15) has at least one sealing lip (16), which is directed radially outward and toward the base (9) of the pot-shaped piston (8) and comes into contact with a sealing surface (17) of the second housing part (13), wherein the sealing surface (17) is arranged on a radially inward-facing collar (18).

15. The valve as claimed in claim 13, wherein the second seal (15) is made of a fluoro rubber.

16. The valve as claimed in claim 13, wherein the region (14) in which the second seal (15) is configure to as to be up to 30% of the piston height.

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

18. The valve as claimed in claim 17, wherein the pot-shaped piston (8) has a wall thickness of at least one selected from the group of:

(a) 0.3 mm to 1 mm, (b) 0.4 mm to 0.8 mm and (c) 0.5 mm.

19. The valve as claimed in claim 17, wherein the pot-shaped piston (8) is a deep-drawn part.

20. The valve as claimed in claim 13, wherein the first seal (10) is arranged on the outside in a region of the base (9) of the pot-shaped piston (8).

21. The valve as claimed in claim 20, wherein the second seal (15) and the first seal (10) are connected integrally to one another in the region (14) of the open end and in a region of the base (9), respectively.

22. The valve as claimed in claim 21, wherein the first and second seals are connected integrally to one another such a that a seal material (21) covers a cylindrical lateral surface of the pot-shaped piston (8) both on the inside and on the outside.

23. The valve as claimed in claim 13, wherein at least the second seal (15) is vulcanized on in the region of the open end (14).

24. The valve as claimed in claim 13, wherein the second housing part (13) is made of a chromium-nickel steel.

25. The valve as claimed in in claim 17, wherein the high-grade steel comprises a chromium-nickel steel.