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
  • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
  • F02M35/10—Air intakes; Induction systems
  • F02M35/10209—Fluid connections to the air intake system; their arrangement of pipes, valves or the like
  • F02M35/10222—Exhaust gas recirculation [EGR]; Positive crankcase ventilation [PCV]; Additional air admission, lubricant or fuel vapour admission
• • 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
  • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
  • F02M26/14—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the exhaust system
  • F02M26/16—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the exhaust system with EGR valves located at or near the connection to the exhaust system
• • 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
  • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
  • F02M26/17—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the intake system
  • F02M26/19—Means for improving the mixing of air and recirculated exhaust gases, e.g. venturis or multiple openings to the intake system
• • 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
  • F02M26/70—Flap valves; Rotary valves; Sliding valves; Resilient 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
  • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
  • F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
  • F16K11/04—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves
  • F16K11/052—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves with pivoted closure members, e.g. butterfly 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 valve for controlling two gas flows with a housing, two arranged in the housing channels for guiding each of a gas, arranged in the first channel first flap for opening and closing the first channel, wherein the first flap rotatable on a shaft is arranged, an electric motor for actuating the shaft, a second flap for opening and closing the second channel and a third channel, in which the first and second channel opens.
• Such housings are used as mixing valves in motor vehicles, in particular as exhaust gas recirculation valves and are generally known.
• Such valves have a channel for the intake fresh air and a second channel for the exhaust gas.
• a flap is arranged, which opens or closes the respective channel cross-section by pivoting.
• Gear transmission is very high. In addition to the many additional transmission components and the housing side effort with the many bearings not insignificant. In addition, such a transmission requires additional space.
• the invention is therefore an object of the invention to provide a valve of the type mentioned, which is simpler. In particular, the number of required components should be reduced.
• the object is achieved in that a connecting element is arranged on the first flap, and that the connecting ⁇ element is connected to the second flap.
• the second flap is positioned with respect to the first flap and to the housing. Furthermore, the pivoting angle of the second flap is determined with the connecting element as a function of the pivoting angle of the first flap in accordance with a predetermined movement regime. While previous coupling mechanisms transmitted from the shaft of a flap, the movement according to the predetermined movement regime on the shaft of the other flap, with this valve the
• the valve according to the invention is characterized by the omission of a coupling mechanism, the second shaft and their storage by particularly few components. This makes this valve very compact and requires little space. Due to the few components, the assembly is very simple and the valve has a low weight.
• both flaps and the connecting element have a relatively simple structure.
• the connecting element with at least one flap, integrally formed. The connec ⁇ tion element is made together with the at least one flap, so that no additional assembly of flap and connecting element is required.
• both flaps and the connecting element are a component. Even with different flap design, such a component can be produced relatively simply, for example, by die casting or by injection molding. Thus eliminates the assembly between the flaps and the connecting part.
• the two flaps are made of the same material. This has the advantage that, if necessary, a design for both flaps can be used.
• both flaps made of different materials. These can be different metals, metal alloys and plastics. But it is also possible to produce a flap of a metal or a metal alloy and the other flap of a plastic. Due to the thermal load, it is advantageous to produce the flap in the exhaust duct made of metal, while the flap in the intake duct may be made of plastic.
• the connecting element consists of the same material as at least one of the two flaps. This makes it possible to manufacture the connecting element together with a flap as a component.
• connecting element and flap are made of plastic, they can be produced very easily and with many design options by injection molding.
• Fig. 1 shows the housing of an exhaust gas recirculation valve
• Fig. 2 is a diagram with the opening characteristics
• FIG. 1 A first figure.
• the exhaust gas recirculation valve in FIG. 1 consists of a housing 1 which has a first channel 2 and a second channel 3 and a third channel 4.
• the first channel 2 is the exhaust passage, through which the exhaust gas of the intake air can be supplied.
• the second channel 3 is the intake passage through which the sucked air is passed.
• the third channel 4 is the mixing channel, through which the two gas streams are forwarded.
• the exhaust passage 2 has a round cross section, while the intake passage 3 and the mixing passage 4 have a rectangular cross section. It is also possible that, depending on the geometry of the lines to be connected to the inlet 5 of the intake duct 3 and the outlet 6 of the mixing channel 4 also has a round cross-section have ⁇ .
• both channels 3, 4 would be limited in this case to the central part of the housing 1.
• a multi-part housing, in particular for the exhaust gas and intake duct can be used.
• a first flap 7 is rotatably mounted on a shaft 8.
• the shaft 7 is mounted in the housing 1 and with a not shown electric drive connected, which is also arranged in the housing 1.
• Figure 2 shows the control regime of exhaust and intake air, which is to be generated with this exhaust gas recirculation valve. Based on an opening cross section (vertical axis) of 100% of the intake air (solid line) and 0% of the exhaust gas (dashed line), the opening cross section of the intake air should remain unchanged up to an opening cross section of 40% for the exhaust gas. The flaps were swiveled to this point by 45 ° (horizontal axis). Only when a further At ⁇ increase of the opening cross section of the exhaust gas to the intake air Publ ⁇ voltage cross section can be reduced, whereby the opening area of the intake air is to be not less than 30% at the fully open the first flap 7 in the exhaust passage. 2
• the following figures show the cut housing 1 with the channels 2-4 and the flaps 7, 9.
• the first flap 7 is rotatably mounted on the shaft 9.
• At the downstream side of the valve 7 is embodied as a web Verbin ⁇ -making element 10 is molded in one piece.
• the second flap 9 is integrally formed on ⁇ .
• the flaps 7, 9 and the web 10 form an integral component, which is made of plastic by injection molding.
• the second flap 9 has on the web 10 side facing a right angle angled edge 11.
• the edge 11 is to prevent that in a flap position of FIG. 4, the intake air flows over the exhaust duct 2 edge facing the mixing channel 4. Further, the edge 11 can serve as a stop for limiting the pivotal movement of the flaps.
• the edge 11 attaches to the channel. This serves as a contact point for the edge 11.
• the edge 11 closes the first flap 7 the exhaust passage 2, while the second flap 9, the intake passage 3 is completely free.
• the second flap 9 is in This position is completely positioned in the transition of the exhaust passage 2 to the mixing channel 4, so that the intake air flows without Be ⁇ obstacles to the mixing channel 4.
• the first flap 7 releases the opening cross section of the exhaust gas duct 2 by 40%.
• the second flap 9 has been pivoted so far in the direction of the on ⁇ suction duct 3, that it leaves him just completely open. If the flaps 7, 9 further pivoted, the edge 11 abuts the channel wall as a stop. In this position, the first flap 7 is fully open and the second flap 9 in its maximum closed position. Due to the larger cross section of the intake passage 3, the intake air is throttled to 30%. The protruding into the channel edge 12 is bent in the flow direction. This reduces the flow resistance in the closed position.

Landscapes

• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Multiple-Way Valves (AREA)
• Lift Valve (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=49667152

Family Applications (1)

Country Status (5)

Families Citing this family (4)

Citations (1)

Family Cites Families (18)

• 2012
  • 2012-11-27 DE DE102012221621.9A patent/DE102012221621A1/de not_active Ceased
• 2013
  • 2013-11-26 CN CN201380061331.XA patent/CN104813083A/zh active Pending
  • 2013-11-26 EP EP13795755.1A patent/EP2926039A1/de not_active Withdrawn
  • 2013-11-26 WO PCT/EP2013/074686 patent/WO2014082983A1/de active Application Filing
  • 2013-11-26 US US14/647,015 patent/US9803591B2/en active Active

Patent Citations (1)

Non-Patent Citations (1)

Also Published As

Similar Documents

Legal Events