Classifications

• • 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
  • F02B37/18—Control of the pumps by bypassing exhaust from the inlet to the outlet of turbine or to the atmosphere
  • F02B37/183—Arrangements of bypass valves or actuators therefor
  • F02B37/186—Arrangements of actuators or linkage for bypass 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
  • F02B37/18—Control of the pumps by bypassing exhaust from the inlet to the outlet of turbine or to the atmosphere
  • F02B37/183—Arrangements of bypass valves or actuators therefor
• • 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
  • F16K1/16—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 with pivoted closure-members
  • F16K1/18—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 with pivoted closure-members with pivoted discs or flaps
  • F16K1/22—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 with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
  • F16K1/221—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 with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves specially adapted operating means therefor
• • 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
  • F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
  • F16K31/041—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor for rotating 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
  • F16K41/00—Spindle sealings
  • F16K41/10—Spindle sealings with diaphragm, e.g. shaped as bellows or tube
  • F16K41/106—Spindle sealings with diaphragm, e.g. shaped as bellows or tube for use with rotating spindles or valves
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
  • Y02T10/00—Road transport of goods or passengers
  • Y02T10/10—Internal combustion engine [ICE] based vehicles
  • Y02T10/12—Improving ICE efficiencies

Definitions

• the invention relates to a wastegate valve actuator system of an exhaust system of an internal combustion engine and an exhaust system.
• exhaust systems of internal combustion engine which have at least one exhaust gas turbocharger.
• An exhaust-gas turbocharger has a turbine via which exhaust gas can be conducted for the purpose of expansion and recovery of energy, the energy obtained in the turbine of an exhaust-gas turbocharger being used to drive a compressor of the exhaust-gas turbocharger and to compress charge air to be supplied to the internal combustion engine.
• a Wastgate valve to the turbine of an exhaust gas turbocharger of an exhaust system, wherein depending on the open position of the Wastgate valve while bypassing the turbine exhaust gas can be passed to the exhaust gas turbocharger.
• Such wastegate valves are also referred to as bypass valves, which serve in particular for controlling or regulating a boost pressure and for controlling and / or regulating a temperature in the exhaust gas system.
• a Wastgate valve To adjust or control a Wastgate valve is an actuator. It is already known from practice that the actuator is coupled via a coupling element with the Wastgate valve to transmit or implement the movement actuator in a movement of a valve flap of the Wastgate valve. It is known from practice to perform the coupling element as a coupling rod, which articulates on the one hand articulated on a drive axis of the actuator and on the other hand articulated on a pivot axis of the valve flap of the Wastgate- valve to form a lever kinematics.
• exhaust gas-carrying assemblies of the exhaust system are typically positioned in a heat-insulated space towards the outside, a so-called hot box, so as to prevent fuel from coming into contact with exhaust-gas-carrying assemblies and thus being able to ignite.
• the wastegate valve is positioned within such a heat-insulated space, whereas the actuator for driving the wastegate valve is typically located outside of this heat-insulated space.
• the coupling element for coupling the actuator to the wastegate valve must then be led into or out of the heat-insulated space. This is problematic in a coupling element forming a lever kinematics.
• the present invention seeks to provide a novel wastegate valve actuator system of an exhaust system of an internal combustion engine and an exhaust system of an internal combustion engine with such a wastegate valve actuator system.
• the drive axis of the actuator extends coaxially to the pivot axis of the valve flap of the wastegate valve.
• the coupling element is designed as a rotation axis, which extends coaxially to the pivot axis of the valve flap of the wastegate valve and coaxial with the drive axis of the actuator, wherein the coupling element is associated with a Federbalgelement.
• the coupling element can only by a rotational movement of the movement of the actuator in a movement of the Wastgate valve, namely the valve flap of the same , realize.
• the spring bellows element associated with the coupling element can reliably compensate for thermally induced deformations in the region of the coupling element, so that there is no danger that the coupling element will be blocked and thus the wastegate valve will fail.
• the coupling element In marine applications, to transfer the coupling element between a heat-insulated space in which the wastegate valve is positioned and the actuator disposed outside of this heat-insulated space, the coupling element must be guided only through an opening in a wall of the heat-insulated space.
• the Federbalgelement is integrated into the coupling element such that the Federbalgelement between a first end of the rotation axis, with which it is connected to the drive axis of the actuator, and a second end of the rotation axis, with which the same to the pivot axis of Valve tab is connected, is coupled, wherein preferably a distance of the Federbalgelements from the first end of the axis of rotation is less than from the second end of the axis of rotation.
• the spring bellows element is assigned to the coupling element such that the bellows element is coupled between one end of the rotation axis and the drive axis of the actuator.
• the Federbalgelement is therefore positioned closer to the actuator in both variants than the Wastgate valve.
• the bellows member is located outside the heat-insulated space. It can be ensured that the Federbalgelement is exposed to low thermal loads.
• the Federbalgelement is a torsionally rigid metal Federbalgelement.
• a torsionally rigid metal spring bellows element is particularly preferred for securely transmitting the movement of the actuator in a movement of the valve flap of the Wastgate valve.
• the exhaust system is defined in claim 9.
• FIG. 1 is a perspective view of a wastegate valve actuator system
• FIG. 2 is a plan view of the wastegate valve actuator system of FIG. 1.
• the invention relates to a Wastgate valve actuator system of an exhaust system of an internal combustion engine and an exhaust system with such a Wastgate valve actuator system.
• an exhaust system of an internal combustion engine comprises at least one exhaust gas turbocharger, each with one turbine and one compressor each.
• Exhaust gas from the internal combustion engine can be guided via the turbine of an exhaust-gas turbocharger in order to relax the exhaust gas in the turbine and thereby to obtain energy.
• the energy obtained in the turbine of an exhaust gas turbocharger is used in the compressor of the respective exhaust gas turbocharger in order to compress the charge air to be supplied to the internal combustion engine.
• an exhaust system of an internal combustion engine may include at least one exhaust aftertreatment assembly, such as a catalytic converter and / or a particulate filter, that are typically positioned downstream of an exhaust gas turbocharger.
• Such a Wastgate valve is driven by an actuator, wherein between the Wastgate valve, namely a valve flap to be adjusted thereof, and the actuator, a coupling element is connected to implement the movement of the actuator in a movement of the valve flap of the Wastgate valve.
• Wastgate valve actuator system The arrangement of Wastgate valve, actuator and coupling element is referred to as Wast gate valve actuator system.
• This wastegate valve actuator system 1 comprises a wastegate valve 2, wherein the wastegate valve 2 has a valve housing 3 and a valve flap 4 accommodated in the valve housing 3.
• the valve flap 4 of the wastegate valve 2 is pivotable about a pivot axis 5 so as to determine or adjust the open position or closed position of the wastegate valve 2.
• the Wastgate valve actuator system 1 further has an actuator 6, which is preferably designed as an electric motor, in particular as a stepper motor.
• the actuator 6 can be coupled via a cable 7 to a control system (not shown) in order to actuate the actuator 6 accordingly. Controlled or regulated by the control system, the actuator 6 can be driven, whereby a movement of a drive axle 8 of the actuator 6 is caused.
• the motor 6 designed as an actuator 6 is coupled to the valve flap 4 of the Wastgate- valve 2 via a coupling element 9, the movement of the actuator, namely the rotation of the drive shaft 8 of the actuator 6, in a movement, namely rotation or pivoting, the valve flap 4 of the Wastgate valve 2 to transfer or implement.
• the drive axle 8 of the actuator 6 extends coaxially to the pivot axis 5 of the valve flap 4 of the Wastgate valve 2.
• the coupling element 9 is formed as a rotation axis coaxial with the pivot axis 5 of the valve flap 4 and coaxial to the drive shaft 8 of the actuator 6 extends.
• To implement the movement of the axis of rotation 8 of the actuator 6 in a pivoting movement of the valve flap 4 of the Wastgate valve 2 therefore formed as a rotation axis coupling element 9 must only perform a rotational movement.
• a lever kinematics for coupling the actuator 6 with the wastegate valve 2 can be omitted.
• a spring bellows element 10 is assigned to the coupling element 9 designed as a rotation axis.
• this Federbalgelement 10 is a torsionally rigid metal spring bellows.
• the rotational movement of the drive shaft 8 of the actuator 6 can be reliably converted into a pivoting movement of the valve flap 4 of the wastegate valve 2 by means of such a bellows element 10.
• thermally induced deformations in the region of the coupling element 9 can be compensated or compensated simply and reliably ,
• the Federbalgelement 10 is preferably assigned to the formed as a rotation axis coupling element 9 such that the Federbalgelement 10 is connected between the coupling element 9 and the drive shaft 8 of the actuator 6, namely such that the Federbalgelement 10 on the one hand to the drive shaft 8 of the actuator 6 and on the other a first end of the coupling element 9 designed as a rotation axis is connected, wherein a second end of the coupling element 9 designed as a rotation axis is connected to the pivot axis 5 of the valve flap 4 of the wastegate valve 2.
• connection of the Federbalgelements 10 to the first end of the coupling element 9 takes place in the illustrated embodiment via a flange, namely via a connection of a flange 1 1, which is formed at the first end of the coupling element 9, and a flange 12, which at the adjacent portion of the Federbalgelements 10 is formed, wherein these two flanges 1 1, 12 of FIG. 1 and 2 are connected together by screws 13.
• a flange connection is optional.
• the connection of the Federbalgelements 10 with the coupling element 9 can also be done in other ways, e.g. by welding.
• the Federbalgelement 10 in the formed as a rotation axis coupling element 9, namely such that the Federbalgelement 10 between a first end of the coupling element 9, with which the same is connected to the drive shaft 8 of the actuator 6, and a second end the axis of rotation 9, with which it is connected to the pivot axis 5 of the valve flap 4 of the Wastgate valve 2 is coupled.
• a distance of the Federbalgelements 10 from the first end of the axis of rotation is preferably less than from the second end of the axis of rotation.
• the bellows element 10 is positioned closer to the actuator 6 than to the wastegate valve 2, so that in the case of ship applications, the wastegate valve 2 is inside of the heat-insulated space and the actuator 6 is disposed outside thereof, the spring bellows element 10 is also positioned outside the heat-insulated space and is therefore exposed to low thermal loads.
• the bellows element 10 may be associated with the axis of rotation or the coupling element 9 such that the bellows element 10 is coupled between one end of the rotation axis and the pivot axis 5 of the valve flap 4 of the wastegate valve 2.
• a Wastgate valve actuator system 1 which is a Wastgate valve 2 with a pivotable about a pivot axis 5 valve flap 4, preferably designed as a stepping motor actuator 6 with a drive shaft 8 and formed as a rotation axis coupling element 9 for transmission the movement of the actuator 6 in a pivoting movement of the valve flap 4 of the Wastgate valve 2 includes, wherein the pivot axis 5 of the Wastgate valve 2, the drive shaft 8 of the actuator 6 and formed as a rotation axis coupling element 9 all coaxial with each other run fen, and wherein the coupling element 9 is assigned a Federbalgelement 10, preferably a torsionally rigid metal spring bellows member 10, via which on the one hand, the rotational movement of the actuator 6 can be securely transmitted in a pivoting movement of the valve flap 4, and over which temperature-induced deformations in the region of the coupling element 9 can be compensated.
• the wastegate valve actuator system 1 according to the invention is simple and failsafe. LIST OF REFER

Landscapes

• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Supercharger (AREA)
• Electrically Driven Valve-Operating Means (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=62748929

Family Applications (1)

Country Status (7)

Families Citing this family (1)

Family Cites Families (8)

• 2017
  • 2017-06-22 DE DE102017113866.8A patent/DE102017113866A1/de not_active Withdrawn
• 2018
  • 2018-06-12 WO PCT/EP2018/065473 patent/WO2018234096A1/de unknown
  • 2018-06-12 US US16/624,026 patent/US20200173350A1/en not_active Abandoned
  • 2018-06-12 JP JP2019570964A patent/JP2020524762A/ja active Pending
  • 2018-06-12 EP EP18734118.5A patent/EP3642464A1/de not_active Withdrawn
  • 2018-06-12 CN CN201880041704.XA patent/CN110741145A/zh active Pending
  • 2018-06-12 KR KR1020207002169A patent/KR20200020892A/ko not_active Application Discontinuation

Also Published As

Similar Documents

Legal Events