Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
  • F16K39/00—Devices for relieving the pressure on the sealing faces
  • F16K39/02—Devices for relieving the pressure on the sealing faces for lift valves
  • F16K39/024—Devices for relieving the pressure on the sealing faces for lift valves using an auxiliary valve on the main valve
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
  • F16K31/00—Actuating devices; Operating means; Releasing devices
  • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
  • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
  • F16K31/0686—Braking, pressure equilibration, shock absorbing
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
  • F16K31/00—Actuating devices; Operating means; Releasing devices
  • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
  • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
  • F16K31/0644—One-way valve
  • F16K31/0655—Lift valves
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
  • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
  • F16K1/32—Details
  • F16K1/34—Cutting-off parts, e.g. valve members, seats
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
  • F16K25/00—Details relating to contact between valve members and seats
  • F16K25/005—Particular materials for seats or closure elements
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
  • F16K27/00—Construction of housing; Use of materials therefor
  • F16K27/02—Construction of housing; Use of materials therefor of lift valves
  • F16K27/029—Electromagnetically actuated valves
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
  • F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
  • F02B37/12—Control of the pumps
  • F02B37/16—Control of the pumps by bypassing charging air
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16J—PISTONS; CYLINDERS; SEALINGS
  • F16J15/00—Sealings
  • F16J15/16—Sealings between relatively-moving surfaces
  • F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
  • F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip

Definitions

• Valve The invention relates to a valve comprising a housing, a solenoid arranged in the housing, a pin movable by the solenoid and a piston connected to the pin and a seal arranged between housing and piston.
• Such valves are used, inter alia, as a diverter valve on the turbocharger in motor vehicles to release a bypass to the suction side in overrun and are thus known.
• rapid opening and closing of the valve is an essential prerequisite. In particular, when closing it depends on the immediate Ver ⁇ closing by the application of the piston to a valve seat.
• the valve seat is formed by the housing of the turbocharger to which the valve is flanged.
• the axially displaceable piston must be sealed against the housing.
• a V-shaped seal ⁇ whose legs abut each case on the housing and on the lateral surface of the piston. By the bias of the two legs, the sealing effect is achieved.
• the disadvantage here is that the voltage applied to the piston sealing lip of the one leg is exposed as a result of the piston movement during opening and closing friction, resulting in increased wear.
• the invention is therefore based on the object to provide a valve with improved sealing function.
• the seal is an axially acting seal, which cooperates in the closed state of the valve with a sealing surface of the piston.
• the piston can be designed with a simple to manufacture and thus inexpensive form when the sealing surface of the piston is arranged on the side facing the solenoid of the piston.
• the axially acting seal has the advantage that it can interact with both metallic pistons and plastic pistons.
• the radially outwardly projecting edge can be particularly easily produced by deep drawing of the piston and thus without an additional step. But it is also conceivable, the edge by crimping the side facing the solenoid of the piston manufacture. Such an additional step requires little effort.
• the radially projecting edge can be provided without additional effort when it is generated during injection molding of the piston.
• the seal consists of a polytetrafluoroethylene (PTFE). This material is easy to process and is characterized by a low frictional resistance.
• PTFE polytetrafluoroethylene
• the seal has a housing-side sealing surface and a piston-side sealing surface, wherein both sealing surfaces are connected by an elastically deformable region.
• the deformation of the elastic region in the closed position of the valve causes a bias under which the sealing surfaces of the seal against the housing and the piston, which increases the sealing effect.
• the seal is particularly simple and inexpensive, according to another advantageous embodiment, when the elastically deformable region spaced apart the two sealing surfaces in the radial and axial directions.
• the elastic region can be formed in a straight line relative to the cross section of the seal.
• the bias of the sealing surfaces relative to the respective adjacent components can be adjusted within wide limits by the design of the elastic region.
• the elastic region can have either a constant or a variable cross-sectional area ⁇ .
• the length of the elastic region is also suitable for influencing the preload. But it is also possible to set the bias by the angle at which the elastic region connects the two sealing surfaces of the seal targeted.
• Fig. 1 is a sectional view of a valve according to the prior art and Fig. 2 is an enlarged view of the piston in the sealing ⁇ area of a valve according to the invention.
• Figure 1 shows the valve comprising a housing 1 with integrally molded socket 2 for electrically connecting the valve.
• the housing 1 further has an integrally formed flange 3 and three bores 3a, via which the housing 1 is flanged to a turbocharger, not shown, in the region of the bypass line 4.
• a housing bushing 13 connects to the flange 3.
• a solenoid 5 with a coil 6 and a metal pin 7 is arranged in the housing 1, a solenoid 5 with a coil 6 and a metal pin 7 is arranged.
• the metal pin 7 is connected to a pot-shaped piston 8, which has an axially projecting annular sealing surface 10 at the periphery of its bottom 9.
• the sealing surface 10 bears against the valve seat 11 in order to close the bypass line 4, so that no medium can flow from the line 4 into the line 12.
• a spring 7a presses the piston 8 in the direction of the valve seat 11. Against the force generated by the spring 7a, the force acting on the bottom 9 due to the pressure in the line 12 acts.
• Figure 2 shows the housing 1 facing the region of the piston 8 with its cylindrical lateral surface 14 in the closed position.
• the housing bush 13 has a radially inwardly facing collar 15.
• On this collar 15 is a seal 16.
• the seal 16 has a region 17 with a housing-side sealing surface 18 and a region 19 with a piston-side sealing surface 20.
• the regions 17, 19 and thus the sealing surfaces 18, 20 are connected by an elastically deformable region 21.
• the housing-side region 17 is clamped between the collar 15 and a cylinder 22 arranged in the housing bush 13, so that the seal 16 is fixedly arranged in the housing bushing 13.
• the piston 8 made of metal has an open end which is produced by crimping, radially outwardly projecting edge 23 having a sealing surface 24.

Landscapes

• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Physics & Mathematics (AREA)
• Electromagnetism (AREA)
• Magnetically Actuated Valves (AREA)
• Supercharger (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=60997431

Family Applications (1)

Country Status (7)

Families Citing this family (2)

Family Cites Families (22)

• 2016
  • 2016-12-22 DE DE102016226071.5A patent/DE102016226071A1/de not_active Ceased
• 2017
  • 2017-12-19 WO PCT/EP2017/083510 patent/WO2018114927A1/de unknown
  • 2017-12-19 CN CN201780079588.6A patent/CN110100129A/zh active Pending
  • 2017-12-19 US US16/471,802 patent/US11168806B2/en active Active
  • 2017-12-19 KR KR1020197020644A patent/KR20190099005A/ko not_active Application Discontinuation
  • 2017-12-19 JP JP2019534388A patent/JP6887503B2/ja active Active
  • 2017-12-19 EP EP17829958.2A patent/EP3559529A1/de not_active Withdrawn

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