WO2011024341A1 - バルブ開閉機構 - Google Patents
バルブ開閉機構 Download PDFInfo
- Publication number
- WO2011024341A1 WO2011024341A1 PCT/JP2010/002434 JP2010002434W WO2011024341A1 WO 2011024341 A1 WO2011024341 A1 WO 2011024341A1 JP 2010002434 W JP2010002434 W JP 2010002434W WO 2011024341 A1 WO2011024341 A1 WO 2011024341A1
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- WO
- WIPO (PCT)
- Prior art keywords
- valve
- closing mechanism
- valve opening
- power transmission
- transmission member
- Prior art date
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Classifications
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- 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
- F16K35/00—Means to prevent accidental or unauthorised actuation
- F16K35/14—Means to prevent accidental or unauthorised actuation interlocking two or more valves
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- 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
- F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
- F02M26/23—Layout, e.g. schematics
- F02M26/25—Layout, e.g. schematics with coolers having bypasses
- F02M26/26—Layout, e.g. schematics with coolers having bypasses characterised by details of the bypass valve
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- 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
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- 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
- F02M26/64—Systems for actuating EGR valves the EGR valve being operated together with an intake air throttle
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- 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
- F16K1/223—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 with a plurality of valve members
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- 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
- F16K31/043—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor for rotating valves characterised by mechanical means between the motor and the valve, e.g. lost motion means reducing backlash, clutches, brakes or return means
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- 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
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8593—Systems
- Y10T137/86928—Sequentially progressive opening or closing of plural valves
- Y10T137/87016—Lost motion
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8593—Systems
- Y10T137/87265—Dividing into parallel flow paths with recombining
- Y10T137/8741—With common operator
- Y10T137/87442—Rotary valve
- Y10T137/87467—Axes of rotation parallel
- Y10T137/87483—Adjacent plate valves counter rotate
Definitions
- This invention relates to a valve opening / closing mechanism that asynchronously controls opening / closing of two or more valves by one power source (actuator).
- Patent Document 1 opens and closes two or more passages by controlling two or more valves with one power source.
- the device described in Patent Document 1 uses a gear for the power transmission mechanism, and the gear and the output shaft are fixed.
- Patent Document 2 discloses that two or more passages are controlled to be opened and closed asynchronously. What is described in Patent Document 2 is only the application of pressure to the output shaft, and does not directly apply pressure to the gear.
- the present invention has been made to solve the above-described problems.
- a valve opening / closing mechanism that asynchronously controls opening / closing of two or more valves with one power source, wear and noise are suppressed, and a sensor is installed. It is intended to enable accurate position detection by being installed on a power transmission member.
- the valve opening / closing mechanism includes an input shaft, two or more output shafts each having a valve, a power transmission member that transmits the power of the input shaft to each output shaft by changing the phase, the output shaft and the power A pressure applying member that applies a pressure in the opposite direction to the transmission member is provided.
- the opening patterns of the valves provided on the respective output shafts can be variously set by transmitting the power of the input shafts to the output shafts while changing the phase. Further, since each output shaft is separated from the power transmission member, there is an effect that heat transfer can be relaxed when the flow rate of the high-temperature gas is controlled. And since the pressurization is given to the output shaft, the valve can be returned to an arbitrary position (initial position) at the time of failure. Suppresses the influence of vibration and gas pressure pulsation, and can stably hold the valve at the initial position even when no power is supplied.
- the pressure applied to the power transmission member in the opposite direction to the pressure applied to the output shaft is applied, the backlash of the gear due to vibration and the vibration of the power transmission member due to the backlash of the link are suppressed, and abnormal noise and friction are suppressed. Suppression is possible. Since the power transmission member cannot swing with respect to the output shaft, the position can be accurately measured even if the sensor magnet is installed on the power transmission member. When a sensor magnet is installed on the power transmission member, the positions of other output shafts can be measured with the same sensor magnet.
- FIG. 2 is a cross-sectional bottom view taken along line 2-2 of FIG. It is a schematic block diagram which shows the valve
- FIG. 13 is a plan view of FIG. 12 with the valve housing removed. It is a longitudinal cross-sectional view of the principal part which shows the other structure which gives the pressurization of the opposite direction to the pressurization of each output shaft to a gear.
- FIG. 15 is a plan view of FIG. 14 with the valve housing removed.
- FIG. 1 is a partial longitudinal sectional view showing a valve opening / closing mechanism according to Embodiment 1 of the present invention
- FIG. 2 is a transverse bottom view taken along line 2-2 of FIG.
- This valve opening / closing mechanism includes a motor 1 as a power source, an input shaft 2 for inputting power from the motor 1 to the valve side, and an output shaft 5 having valves 3 and 4 for supplying the power of the input shaft 2 respectively.
- Gears 7 and 8 that transmit to 6 and a valve housing 9 that houses them are provided.
- the valve housing 9 is formed with a passage 9a that passes through the cooler in parallel and a passage 9b that does not pass through the cooler.
- the output shafts 5 and 6 pass through the passages 9a and 9b through the bearings 10 and 11, respectively. It is supported freely.
- a mounting substrate 12 of the motor 1 is attached to the upper end of the peripheral side wall of the recess provided in the upper part of the valve housing 9 with a packing 13 interposed therebetween, and the recess is formed as a gear housing chamber 14.
- the input shaft 2 is rotatably supported by the substrate 12 via a bearing 15, and a pinion via 16 is attached to the tip portion thereof.
- Gears 7 and 8 are rotatably attached to the distal end portions of the output shafts 5 and 6 that have entered the gear housing chamber 14, and the gears 7 and 8 mesh with the pinion gear 16, respectively.
- the gears 7 and 8 are respectively formed with fan-shaped holes 7a and 8a.
- cylinders 17 and 18 are attached to the output shafts 5 and 6 in the vicinity of the gears 7 and 8, and arm members 17 a and 18 a provided on the cylinders 17 and 18 are attached to the holes 7 a of the gears 7 and 8. , 8a and abuts against the hole surface.
- Coil springs 19 and 20 as pressurizing members are wound around the outer circumferences of the cylindrical bodies 17 and 18, and the output shafts 5 and 6 are constantly pressurized in the valve closing direction by the coil springs 19 and 20.
- sealing members 21 and 22 are provided on the valve housing 9 so as to face the lower ends.
- a power transmission member between the input shaft 2 and the output shaft 5 (6) is constituted by the pinion gear 16, the gear 7 (8), the hole 7a (8a), the arm member 17a (18a), and the cylindrical body 17 (18). Is configured.
- FIGS. 1 and 2 show a state in which the valves 3 and 4 attached to the output shafts 5 and 6 are closed.
- the pinion gear 16 integrated with the input shaft 2 of the motor 1 is When rotated counterclockwise (broken line arrow in the figure), the gears 7 and 8 engaged with the pinion gear 16 rotate in the right direction. Therefore, the gear 7 has the hole surface 7a-1 in contact with the arm member 17a, rotates the output shaft 5 to the right via the cylindrical body 17, and opens the valve 3.
- the gear 8 rotates in the direction in which the hole surface 8a-1 moves away from the arm member 18a, the output shaft 6 cannot rotate, and the valve 4 maintains the closed state.
- the valves 3 and 4 provided on the output shafts 5 and 6 can be asynchronously controlled by the rotation direction of the input shaft.
- various valve opening patterns can be set.
- each output shaft 5 and 6 is isolate
- the output shafts 5 and 6 are pressurized in the valve closing direction by the coil springs 19 and 20, the valve can be closed, the position when the actuator 1 is not energized is regulated, and the touch due to vibration is suppressed. Can do.
- the distance between the arm members 17a and 18a and the hole surfaces 7a-1 and 8a-1 in the valve open state is arbitrarily set, that is, the speed reduction ratio of the power transmission member is made variable, so that the operating range of the output shaft can be reduced. It can be arbitrarily set for each valve, and the distance between the valves can also be changed. Further, by making the axial arrangement of the power transmission members variable, interference between the power transmission members can be avoided even when the distance between the valves is reduced.
- FIG. 3 shows a comparison between the valve opening / closing mechanism according to the first embodiment of the present invention and the passage through which the cooler passes and the passage through which the cooler does not pass, and the flow rate is controlled in comparison with the conventional example.
- a cooler 31 In the EGR system that returns exhaust gas from the engine to the intake side, a cooler 31 is installed to lower the gas temperature and increase the EGR effect. However, when the gas temperature is low, such as when the engine is started, the gas temperature decreases. Too much. Therefore, a passage 32 that passes through the cooler 31 and a passage 33 that does not pass through the cooler 31 are provided. Therefore, in the conventional configuration shown in FIG. 3A, it is necessary to install an EGR-valve 35 for controlling the gas flow rate and a switching valve 34 for switching the passage 32 passing through the cooler 31 and the passage 33 not passing through the cooler 31. It was.
- the valve opening / closing mechanism according to Embodiment 1 of the present invention is used as the EGR valve 36, the gas flow rate can be controlled and the passage can be switched by one EGR valve 36, which is necessary in the conventional configuration.
- the switching valve 34 is not required, and the configuration can be simplified and the cost can be reduced.
- the switching valve 34 and the EGR valve 35 provided at two locations in the gas flow passage can be shared by one EGR valve 36, the pressure loss can be reduced to 1 ⁇ 2.
- FIG. FIG. 4 is a structural view in which a part of a valve opening / closing mechanism according to Embodiment 2 of the present invention is vertically cut.
- This valve opening / closing mechanism serves as a pressure applying member for each of the gears 7 and 8 so as to give the gears 7 and 8 a pressurizing force in a direction opposite to the pressurizing force applied to the output shafts 5 and 6 by the coil springs 19 and 20.
- the coil springs 23 and 24 are mounted.
- one end of the coil springs 23 and 24 is fixed to the gears 7 and 8 and the other end is fixed to the valve housing 9, so that the motor 1 is not energized and the hole surfaces 7a-1 and 8a-1 of the gears 7 and 8 and the arm Even when the members 17a and 18a are not in contact with each other, the gears 7 and 8 can be prevented from being shaken by the pressurization of the coil springs 23 and 24, so that the wear of the gears 7 and 8 can be suppressed.
- FIG. FIG. 5 is a structural view in which a part of a valve opening / closing mechanism according to Embodiment 3 of the present invention is vertically cut.
- a sensor 26 is installed facing the magnet 25 on the gear head, and the gear keeps moving even when the one-side valve is not operating.
- the gear cannot swing with respect to the output shaft, it is possible to detect the positions of the valves on both sides only by installing the sensor 26 facing the magnet 25 on the gear head on one side.
- the position of the gear may not match the position of the valve when the valve is fixed, etc., so it is possible to install the sensor 26 on the output shaft or arm member on both sides facing the magnet installed on the gear. To do.
- FIG. FIG. 6 shows a valve opening / closing mechanism according to Embodiment 4 of the present invention by displaying the valve opening with respect to the operation of the gears 7 and 8 and the spring load as viewed from the motor 1 according to the normal state and the state when the valve is fixed. It is a figure.
- this valve opening / closing mechanism the contact portions of the arm members 17a, 18a and the output shafts 5, 6 are provided in the direction opposite to the driving direction, and the driving force of the motor 1 is forcibly used even when the valve is fixed. It can be closed.
- the horizontal axis of the drawing showing the valve opening is the position of the motor 1, and a step sensor is integrated with the motor 1 every 10 °, and the initial position (1), (2), fully open position. (1) and (2) are intended for the step sensor output.
- valves 3 and 4 are held in the closed state by the valve preload spring (the central view in FIG. 6).
- the valve preload spring the central view in FIG. 6
- the gears 7 and 8 are rotated clockwise. Therefore, the arm member 18a is pushed by the hole surface 8a-1 of the gear 8 and rotated clockwise, and the valve 4 is opened according to this rotation.
- the gear 7 does not open the valve 3 because the hole surface 7a-1 rotates in a direction away from the arm member 17a.
- the valves 3 and 4 open and close asynchronously with respect to the counterclockwise and clockwise rotation of the pinion gear 16.
- the driving force supplied to the motor 1 when the valves 3 and 4 are closed is the lock detection driving force (A) setting range
- the closed region of the valves 3 and 4 is the lock detection determination width (B)
- the movable range 4 is the cleaning operation determination width (C).
- the illustrated example shows a state in which the valve 3 is not closed by the valve preload spring when the motor 3 is not in operation when the valve 3 is not energized due to foreign matter mixed in during the opening.
- FIG. 7 is a flowchart for explaining the lock detection and release operation of the valve 3 or the valve 4.
- the motor 1 is driven with the driving force (A) (step ST2), and it is determined whether the specified time has passed (step ST3). For example, it is determined whether there is a position change ⁇ sensor output change> (step ST4). If NO, the process returns to step ST3 and the above operation is continued.
- step ST5 the position is set to the initial position (1) (step ST5), the motor is driven in the reverse direction with the driving force (A) (step ST6), and the specified time has elapsed. If NO (NO in step ST7), it is determined whether or not there is a position change ⁇ sensor output change> (step ST8). If NO, the process returns to step ST7 to continue the above operation. On the other hand, if the determinations in steps ST7 and ST8 are YES, the position is set to the initial position (2) (step ST9), and
- step ST10 determines whether the number of retries ⁇ 3 (step ST12). If NO, it is determined that the valve is abnormal and lock detection is terminated (step ST25). On the other hand, if the determination in step ST12 is YES, the motor is driven with full power (step ST13), it is determined whether the specified time has elapsed (step ST14), and if NO, the position change ⁇ sensor output change> is If it is NO, the process returns to step ST14 and the above operation is continued.
- step ST16 the position is set to the fully open position (1) (step ST16), the motor is driven in the reverse direction with full power (step ST17), and it is determined whether the specified time has elapsed. If it is NO (NO in step ST18), it is determined whether there is a change in position ⁇ sensor output change> (step ST19). If NO, the process returns to step ST18 and the above operation is continued. In this way, the fixed valve can be forcibly closed by driving the motor in the reverse direction with full power.
- step ST18 and step ST19 are YES, the position is set to the fully open position (2) (step ST20), and
- step ST21 determines whether lock detection count> 3 (step ST24). If YES, the process proceeds to step ST25 to determine that the valve is abnormal. To end lock detection. If the determination in step ST21 or step ST24 is NO, the number of retries is counted and the process returns to step ST1. Note that (1) and (2) given to the initial position and the fully opened position correspond to circles 1 and 2 attached to the initial position and fully opened position in FIG.
- lock detection is performed, and the motor is driven in a direction opposite to the valve opening control, so that the hole surfaces 7a-2 and 8a-2 opposite to those at the time of valve opening are formed. Since the valve is operated in the valve closing direction by abutting against the arm members 17a and 18a, the valve can be forcibly closed even if the valve is stuck or locked in the middle of opening due to foreign matter or the like being mixed. The inconvenience associated with can be avoided.
- FIG. 9 is a view showing a modification of the contact portion between the gear and the arm member according to the fifth embodiment, wherein the gears 7 and 8 are provided with convex portions 7b and 8b, and the convex portions 7b and 8b are in contact with the arm members 17a and 18a. It can also be set as the structure which touches.
- the gears 7 and 8 can be downsized compared to the case where the holes 7a and 8a are provided in the gears 7 and 8.
- FIG. 8B is a longitudinal sectional view taken along the line 8-8 in FIG.
- FIGS. 9A and 9B are diagrams showing a modification of the contact portion between the gear and the arm member according to the sixth embodiment.
- Pin insertion holes 17c and 18c are provided in the gears 7 and 8, and the pin insertion holes are provided.
- the protrusions shown in the fifth embodiment can be obtained by press-fitting pins 27 and 28 into 17c and 18c. With such a configuration, the same gear can be used on both the left and right sides by changing the positions of the holes into which the pins 27 and 28 are inserted.
- FIG. 9B is a longitudinal sectional view taken along the line 9-9 in FIG. 9A.
- FIG. 10 is a view showing a valve opening / closing mechanism according to Embodiment 7 of the present invention.
- a gear is used as a power transmission member for transmitting the power of the input shaft 2 to the output shafts 5 and 6.
- a link is used as the power transmission member.
- the intermediate portion of the lever 41 is attached to the input shaft 2, the ends of the links 42 and 43 are connected to both ends of the lever 41 by connecting pins 44 and 45, and attached to the output shafts 5 and 6.
- the pins 48 and 49 at the tips of the crank levers 46 and 47 are engaged with elongated holes 42a and 43a formed in the links 42 and 43, respectively.
- FIG. 11 is a view showing a valve opening / closing mechanism according to Embodiment 8 of the present invention, which is a modification of Embodiment 7 in which a link is used as a power transmission member.
- a crank lever 51 is attached to the input shaft 2
- the ends of the links 52, 53 are connected to the end of the lever 51 by a connecting pin 54
- the crank is attached to the output shafts 5, 6.
- the pins 57 and 58 at the tips of the levers 55 and 56 are engaged with elongated holes 52 a and 53 a formed in the links 52 and 53.
- FIG. 12 and 13 are a longitudinal sectional view and a plan view of a main part showing a modification of the configuration in which the gear according to the second embodiment is applied with a pressurization in the direction opposite to the pressurization of each output shaft.
- 6 are used as plate bodies 27, 28, and end bent portions 27a, 28a of the plate bodies 27, 28 are engaged with holes 7a, 8a provided with gears 7, 8, and coil springs 23, 28 are engaged.
- One end of 24 is fixed to the gears 7 and 8 and the other end is fixed to the valve housing 9.
- A is the spring load direction of the coil spring 19 acting on the left output shaft 5 and B Is the spring load direction of the coil spring 23 acting on the left power transmission member, C is the spring load direction of the coil spring 24 acting on the right power transmission member, and D is the spring load direction of the coil spring 20 acting on the right output shaft 6.
- FIGS. 14 and 15 are a longitudinal sectional view and a plan view of the main part of the configuration for applying a pressure in the direction opposite to the pressure applied to each output shaft to the gear according to the ninth embodiment.
- the coil springs 23 and 24 for applying a pressurizing force to the gears 7 and 8 are arranged, one end 23a and 24a are gears 7 and 8 and the other end 23b and 24b are plate bodies This configuration is fixed to the output shafts 5 and 6 via 28.
- A is the spring load direction of the coil spring 19 acting on the left output shaft 5.
- B is the spring load direction of the coil spring 23 acting on the left power transmission member
- C is the spring load direction of the coil spring 24 acting on the right power transmission member
- D is the spring load direction of the coil spring 20 acting on the right output shaft 6.
- the coil spring 24 only needs to have a minimum required pressure at the illustrated position, so that the pressure of the coil spring 20 for ensuring the self-returning property can be kept small, and the load for valve operation is reduced. This makes it possible to drive the valve with quick response even with less power.
- the applied pressure of the coil springs 23 and 19 can be reduced by the same operation as described above.
- the valve opening / closing mechanism according to the present invention is suitable for an EGR system in which a passage that passes through a cooler and a passage that does not pass through the cooler are installed, and the two passages are switched according to the exhaust gas temperature.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
Description
そして、出力軸に与圧を与えているので、フェール時にバルブを任意の位置(初期位置とする)に戻すことができる。振動やガスの圧力脈動の影響を抑え、無通電時も初期位置でバルブを安定して保持できる。
実施の形態1.
図1はこの発明の実施の形態1に係るバルブ開閉機構を示す一部を縦断した構成図、図2は図1の2-2線に沿う横断底面図である。このバルブ開閉機構は、動力源としてのモータ1と、このモータ1からの動力をバルブ側に入力する入力軸2と、この入力軸2の動力を、それぞれバルブ3,4を有する出力軸5,6に伝達するギア7,8と、これ等を収納するバルブハウジング9を備えている。
図4はこの発明の実施の形態2に係るバルブ開閉機構を示す一部を縦断した構成図である。このバルブ開閉機構は、コイルバネ19,20によって出力軸5,6に付与された与圧と反対方向の与圧をギア7,8に与えるように、それぞれのギア7,8に与圧付与部材としてのコイルバネ23,24を装着したものである。この場合、コイルバネ23,24の一端はギア7,8に他端はバルブハウジング9に固定したもので、モータ1に対する無通電時及びギア7,8の穴面7a-1,8a-1とアーム部材17a,18aが当接していない場合でも、コイルバネ23,24の与圧によってギア7,8の振れを抑制して、ギア7,8の磨耗を抑えることができる。
図5はこの発明の実施の形態3に係るバルブ開閉機構を示す一部を縦断した構成図である。このバルブ開閉機構は、分解能を上げるために、ギア頭部のマグネット25に対向してセンサ26を設置したもので、片側バルブ非動作時もギアは動き続けるため、各バルブのポジションを検出する場合も、ギアが出力軸に対して振れないので、どちらか片側のギア頭部のマグネット25に対向してセンサ26を設置するだけで、両側バルブのポジションを検出することができる。ただし、バルブが固着した場合等はギアの位置とバルブ位置が一致しない可能性があるので、ギアに設置したマグネットに対向して両側の出力軸若しくはアーム部材にセンサ26を設置することを可とする。
図6はこの発明の実施の形態4に係るバルブ開閉機構を、通常時とバルブ固着時の状態別に、ギア7,8の動作に対するバルブ開度、モータ1から見たバネ負荷を表示して示した図である。このバルブ開閉機構は、アーム部材17a,18aと出力軸5,6の当接部を駆動方向とは逆の方向にも設けるもので、バルブ固着時等にもモータ1の駆動力で強制的に閉弁させることができる。なお、バルブ開度を記載した図の横軸はモータ1の位置であり、このモータ1には10°毎にステップセンサが一体となっており、初期位置(1)、(2)、全開位置(1)、(2)はそのステップセンサ出力のことを意図している。
なお、上記の初期位置、全開位置に付した(1)、(2)は図7の初期位置、全開位置に付した丸で囲んだ1、2に相当する。
以上の各実施の形態においては、ギアとアーム部材とは、ギアに設けた穴内にアーム部材を入れ、アーム部材を穴縁に当接させる構成であるが、図8(a),(b)は実施の形態5によるギアとアーム部材の当接部の変形例を示す図であり、ギア7,8に凸部7b,8bを設け、この凸部7b,8bとアーム部材17a,18aを当接させる構成とすることもできる。このような構成とすれば、実施の形態1~4に示したように、ギア7,8に穴7a,8aを設ける場合に比べて、ギア7,8を小型化することができる。なお、図8(b)は図8(a)の8-8線に沿う縦断面図である。
図9(a),(b)は実施の形態6によるギアとアーム部材の当接部の変形例を示す図であり、ギア7,8にピン挿入穴17c,18cを設け、このピン挿入穴17c,18cにピン27,28を圧入することで実施の形態5に示した凸部とすることもできる。このような構成とすれば、ピン27,28を挿入する穴位置を変えることにより、左右共に同じギアを使用することができるという効果が得られる。なお、図9(b)は図9(a)の9-9線に沿う縦断面図である。
図10はこの発明の実施の形態7に係るバルブ開閉機構を示す図である。実施の形態1~実施の形態6は入力軸2の動力を出力軸5,6に伝達する動力伝達部材としてギアを用いたものであるが、この実施の形態7は動力伝達部材としてリンクを用いるもので、入力軸2にレバー41の中間部を取付け、このレバー41の両端部にリンク42,43の端部を連結ピン44,45で屈曲自在に連結し、出力軸5,6に取り付けたクランクレバー46,47の先端のピン48,49をリンク42,43に形成された長穴42a,43aに係合させた構成である。
図11はこの発明の実施の形態8に係るバルブ開閉機構を示す図であり、動力伝達部材としてリンクを用いる実施の形態7の変形例である。この実施の形態8は入力軸2にクランクレバー51を取付け、このレバー51の端部にリンク52,53の端部を連結ピン54で屈曲自在に連結し、出力軸5,6に取り付けたクランクレバー55,56の先端のピン57,58をリンク52,53に形成された長穴52a,53aに係合させた構成である。
図12、図13は実施の形態2に係るギアに各出力軸の与圧と反対方向の与圧を与える構成の変形例を示す要部の縦断面図および平面図であり、出力軸5,6に取り付けた筒体17,18を板体27,28とし、板体27,28の端部折り曲げ部27a,28aをギア7,8の設けた穴7a,8aに係合させ、コイルバネ23,24の一端はギア7,8に他端はバルブハウジング9に固定した構成である。
Claims (9)
- 動力源で駆動される入力軸と、それぞれバルブを有する2以上の出力軸と、前記入力軸の動力を、位相を変えてそれぞれの前記出力軸に伝達する動力伝達部材と、前記出力軸と前記動力伝達部材とにそれぞれ逆方向の与圧を付与する与圧付与部材を備えたことを特徴とするバルブ開閉機構。
- 動力伝達部材への与圧付与部材を、出力軸と動力伝達部材との間に設置したことを特徴とする請求項1記載のバルブ開閉機構。
- 各動力伝達部材の減速比を可変とすることを特徴とする請求項1記載のバルブ開閉機構。
- 各動力伝達部材の軸方向配置を可変とすることを特徴とする請求項1記載のバルブ開閉機構。
- 1つの動力伝達部材に位置を検出するセンサを設け、各出力軸の位置を検出することを特徴とする請求項1記載のバルブ開閉機構。
- 各出力軸にバルブの位置を検出するセンサを設けたことを特徴とする請求項1記載のバルブ開閉機構。
- 出力軸と動力伝達部材との当接部を駆動方向とは反対側にも設けたことを特徴とする請求項1記載のバルブ開閉機構。
- 各動力伝達部材がギアであることを特徴とする請求項1記載のバルブ開閉機構。
- 各動力伝達部材がリンクであることを特徴とする請求項1記載のバルブ開閉機構。
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CN201080036034.6A CN102472406B (zh) | 2009-08-24 | 2010-04-02 | 阀开关机构 |
US13/320,721 US8887761B2 (en) | 2009-08-24 | 2010-04-02 | Valve opening and closing mechanism |
JP2011528607A JP5328921B2 (ja) | 2009-08-24 | 2010-04-02 | バルブ開閉機構 |
DE201011003374 DE112010003374T5 (de) | 2009-08-24 | 2010-04-02 | Ventilöffnungs- und Schließmechanismus |
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PCT/JP2009/004064 WO2011024211A1 (ja) | 2009-08-24 | 2009-08-24 | バルブ開閉機構 |
JPPCT/JP2009/004064 | 2009-08-24 |
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WO2011024341A1 true WO2011024341A1 (ja) | 2011-03-03 |
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PCT/JP2009/004064 WO2011024211A1 (ja) | 2009-08-24 | 2009-08-24 | バルブ開閉機構 |
PCT/JP2010/002434 WO2011024341A1 (ja) | 2009-08-24 | 2010-04-02 | バルブ開閉機構 |
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PCT/JP2009/004064 WO2011024211A1 (ja) | 2009-08-24 | 2009-08-24 | バルブ開閉機構 |
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US (1) | US8887761B2 (ja) |
CN (1) | CN102472406B (ja) |
DE (1) | DE112010003374T5 (ja) |
WO (2) | WO2011024211A1 (ja) |
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FR2984960B1 (fr) * | 2011-12-21 | 2013-12-20 | Valeo Sys Controle Moteur Sas | Doseur deux voies avec dosage sur chaque voie |
EP2653709A1 (de) * | 2012-04-18 | 2013-10-23 | Continental Automotive GmbH | Mischventil einer Brennkraftmaschine eines Kraftfahrzeuges |
EP2662556B1 (de) * | 2012-05-09 | 2015-02-18 | Continental Automotive GmbH | Mischventil einer Brennkraftmaschine |
DE102013105839B4 (de) * | 2013-06-06 | 2015-04-16 | Pierburg Gmbh | Betätigungsvorrichtung sowie Klappenvorrichtung mit einer derartigen Betätigungsvorrichtung |
EP2843223B1 (de) * | 2013-09-02 | 2017-02-01 | Continental Automotive GmbH | Mischventil einer Brennkraftmaschine |
EP3093480A1 (de) * | 2015-04-30 | 2016-11-16 | MANN+HUMMEL GmbH | Kombiventil mit niederdruck- abgasrückführungsventil und ansaugluftdrossel für einen verbrennungsmotor |
KR102284628B1 (ko) * | 2016-07-27 | 2021-08-02 | 뷔흘러 에이지 | 벌크 재료 차단 요소용 전자 기계적 액추에이터 |
DE102017119880B4 (de) * | 2017-08-30 | 2019-09-05 | Handtmann Systemtechnik Gmbh & Co. Kg | Abgaskühleinheit und Verbrennungskraftmaschine mit einer Abgaskühleinheit |
EP3851659B1 (en) * | 2020-01-15 | 2022-08-17 | Airbus Operations (S.A.S.) | Cold regulating valve for a heat exchanger system of an aircraft propulsion system |
US11022079B1 (en) * | 2020-02-21 | 2021-06-01 | Deere & Company | Dual element engine gas valve |
CN111810658B (zh) * | 2020-07-20 | 2022-04-08 | 尔约阀门科技有限公司 | 净水蝶阀 |
CN114655579B (zh) * | 2022-03-14 | 2023-08-01 | 上海吉啸电子科技有限公司 | 一种用于cds原液桶的氮封装置 |
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Also Published As
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US20120056118A1 (en) | 2012-03-08 |
WO2011024211A1 (ja) | 2011-03-03 |
DE112010003374T5 (de) | 2012-06-14 |
CN102472406A (zh) | 2012-05-23 |
US8887761B2 (en) | 2014-11-18 |
CN102472406B (zh) | 2014-01-22 |
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