Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
  • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
  • F02M26/52—Systems for actuating EGR valves
  • F02M26/53—Systems for actuating EGR valves using electric actuators, e.g. solenoids
  • F02M26/54—Rotary actuators, e.g. step motors
• • 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
  • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
  • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
  • F02M26/51—EGR valves combined with other devices, e.g. with intake valves or compressors
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
  • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
  • F02M26/65—Constructional details of EGR 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 device for controlling an exhaust valve of an internal combustion engine with a controllable actuator, with a drivable by the actuator lever and with a movement of the control lever on the exhaust valve transmitting push rod.
• Such a device is for example from the
• DE 10 2008 014 609 AI known Such devices are often used in today's internal combustion engines, for example to switch exhaust gas recirculation valves, for adjusting the stator blades of a turbocharger or for actuating a wastegate valve in a turbocharger.
• the actuator has for its control, for example, an electric motor or a pneumatic actuator.
• the lever is driven by a gear in the known device.
• an elastic element is arranged, which compensates for load peaks.
• the push rod allows a spatially ⁇ separated arrangement of the exhaust valve of the actuator.
• the invention is based on the problem to form a device of the type mentioned so on that it has ei ⁇ nen particularly low energy consumption.
• This problem is inventively achieved in that are supported laterally on a stop in one of the end positions of the exhaust valve, the adjusting lever or the push rod.
• levers and push rod have a detent position in which they are held on the stop. Therefore, the exhaust valve is held passively in the one end position of the stop.
• the actuator requires no energy when the exhaust valve is held at least in one end position.
• the energy required to operate the device according to the invention energy consumption is particularly low. Since the adjusting lever is usually shorter and thus more rigid than the push rod, the adjusting lever is preferably supported on the stop.
• the structural complexity for controlling the exhaust valve can be kept particularly low according to another advantageous embodiment of the invention, when the push rod with the lever forms a crank mechanism and if in a dead center of the crank mechanism, the exhaust valve has the one end position and the lever or the push rod in the case of the drive of the crank mechanism beyond the dead point on the stop is supported. In this position, which is rotated beyond the dead center of the crank mechanism, a force introduced into the push rod by the exhaust valve can not lead to a Verschwen ⁇ ken of the control lever, as the lever and push rod are blocked. Only when the control lever on the Stellan ⁇ drive is swung back over the dead center, the connecting rod can be moved in their longitudinal direction and drive the exhaust valve.
• the push rod and the lever could be in one end ⁇ position of the exhaust valve in an extended position one behind the other.
• the exhaust valve can be particularly easily adjusted according to another advantageous embodiment of the invention, when the push rod and the lever are parallel to each other in the one end position of the exhaust valve.
• the exhaust valve is permanently CLOSED ⁇ sen.
• the invention avoid a permanent energization of the actuator when the one end position corresponds to the closed position of the exhaust valve.
• the push rod can be preassembled according to another advantageous embodiment of the invention with the elastic member to a structural unit, when the push rod has an inner member and an inner member telescopically cross-outer member and when the elastic Element is disposed between the inner and the outer member and is supported on shoulders of the inner and outer members.
• the inventive device is particularly compact set ⁇ builds when the elastic member is a coil spring being formed ⁇ .
• the device according to the invention is structurally particularly simple if the exhaust valve has a vertically pivotable against an opening of an exhaust gas duct exhaust flap. Thus, the force of the elastic element acts against the pressure in the exhaust passage.
• Push rod via a ball joint with an actuating arm of the exhaust flap of the exhaust valve is connectable.
• Fig. 1 shows schematically a device according to the invention for
• FIG. 2 shows schematically the device according to the invention in
• Closing the exhaust valve shows schematically the device according to the invention in an end position
• FIG. 1 schematically shows a device with a crank drive 2 which can be driven by an actuator 1 and an exhaust valve 3 which can be driven via the crank drive 2.
• the crank drive 2 has a push rod 4 and a control lever 5
• Push rod 4 an elastic element 6 is arranged.
• the push rod 4 is connected via a hinge 7 to a control arm 8 of the exhaust valve 3.
• the actuator arm 8 is moved a vertically pivotable on an opening 9 of an exhaust passage 10 exhaust flap 11.
• a Ventilkör ⁇ by and the opening 9 of the exhaust passage 10 a valve seat of the exhaust valve 3.
• the direction of the exhaust passage 10 to the From ⁇ gas flap 11 acting pressure is indicated in the drawing with an arrow and the letter P.
• the adjusting lever 5 can be pivoted via the actuator 1 between the two positions I and II. In the position I of the control lever 5, the exhaust valve 3 is in the fully open end position. In position II of the control lever 5, the exhaust valve 3 is in the fully closed end position.
• the arranged in the push rod 4 elastic element 6 is substantially relaxed and compensates in the positions I and II tolerances between the actuator 1 and the exhaust valve 3 from.
• Figure 2 shows the device of Figure 1 after a drive of the control lever 5 by the actuator 1 against the Uhrzei ⁇ gersinn in a position III.
• the elastic element 6 is stretched by the amount a.
• the exhaust valve 3 ver ⁇ remains in its closed end position.
• the lever 5 and the push rod 4 are parallel in this position one above the other.
• the position III indicates a dead center of the crank mechanism. 2
• Figure 3 shows the device of Figures 1 and 2 for a drive of the control lever 5 by the actuator 1 ge ⁇ gen clockwise in the position IV.
• the lever 5 is located on the side of a stop 12.
• the elastic ele ⁇ ment 6 is excited only by the amount b.
• the exhaust valve 3 is thus held by the stop 12 and the elastic member 6 in the closed end position.
• a pressure acting from the exhaust gas in the exhaust passage 10 on the exhaust valve 11 pressure causes the control lever 5 is further pulled against the impact-on ⁇ 12th From the voltage applied to the stop 12 position IV, the lever 5 can be driven only by means of the actuator 1 out.
• Figure 4 shows an embodiment of the device of Figures 1 to 3 with the actuator 1 and the crank mechanism 2.
• the exhaust valve 3 is not shown to simplify the drawing.
• the actuator 1 has an electric motor 13, wel ⁇ cher is connected via a gear 14 to the crank mechanism 2.
• the push rod 4 has a respective ball joint 15, 16 for connection to the actuating lever 5 and the example shown in Figure 1 actuator arm 8 of the exhaust valve 3.
• the push rod 4 has an inner member 17 and an inner Ele ⁇ element 17 cross outer member 18
• the elements 17, 18 of the push rod 4 are telescopically telescoping and paragraphs 19, 20 for supporting the elastic member 6 on.
• the elastic element 6 is formed as arranged between the elements 17, 18 of the push rod 4 coil spring.

Landscapes

• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Mechanically-Actuated Valves (AREA)
• Lift Valve (AREA)
• Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)

Applications Claiming Priority (2)

Publications (1)

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ID=44042645

Family Applications (1)

Country Status (4)

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Citations (1)

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• 2010
  • 2010-05-10 DE DE102010020115A patent/DE102010020115A1/de active Pending
• 2011
  • 2011-05-09 EP EP11719807A patent/EP2569529A1/de not_active Withdrawn
  • 2011-05-09 WO PCT/EP2011/057444 patent/WO2011141436A1/de active Application Filing
  • 2011-05-09 KR KR1020127032115A patent/KR101902588B1/ko active IP Right Grant

Patent Citations (2)

Non-Patent Citations (1)

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