• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to an actuator for axial displacement of an object. The actuator comprises a cylinder volume with a first part (6), and an actuator piston disc (5) which is axially displaceable back and forth in said cylinder volume between a rest position and an active position, an inlet channel (11) extending between a pressure fluid inlet ( 12) and the first part (6) of the cylinder volume, a first inlet valve body (15) arranged in said inlet channel (11), an outlet channel (13) extending between the first part (6) of the cylinder volume and a pressure fluid outlet (14), and an outlet valve body ( 27) arranged in said outlet channel (13). The actuator is a slave piston (17) which is displaceable back and forth in a race (18) between a rest position and an active position, and that the first inlet valve body (15) consists of a seat valve body with a rest position where the inlet channel (11) is closed, the slave piston (17) is arranged to, during its movement from rest position to active position, frame said first inlet valve body (15) and displace it to an active position where the inlet channel (11) is open. Publication picture: Figure 1
    公开号:SE1550461A1
    申请号:SE1550461
    申请日:2015-04-16
    公开日:2016-10-17
    发明作者:Höglund Anders；Carlsson Urban
    申请人:Freevalve Ab；
    IPC主号:
    专利说明:

    TECHNICAL FIELD OF THE INVENTION The present invention relates to an actuator for axial displacement of an object. The present invention is particularly useful in applications that require high speeds and precise controllability of the axial displacement. In particular, the present invention relates to a gas exchange valve actuator for internal combustion engines, the actuator being proposed for driving one or more inlet valves or outlet valves which control supply or evacuation of air relative to the internal combustion engine cylinder. The actuator according to the invention is thus particularly suitable for driving engine valves and thus eliminates the need for one or more camshafts in an internal combustion engine.
    The actuator according to the invention comprises an actuator piston disk and a cylinder volume, the actuator piston disk dividing said cylinder volume into a first part and a second part and being axially reciprocable in said cylinder volume between a rest position and an active position. The actuator further comprises an inlet duct extending between a pressure fluid inlet and the first part of the cylinder volume, a first inlet valve body arranged in said inlet duct, an outlet duct extending between the first part of the cylinder volume and a pressure fluid outlet, and a outlet outlet valve in the outlet outlet.
    Background of the Invention and Prior Art An actuator, commonly known as a pneumatic actuator, thus includes an actuator piston disk that is displaceable in the axial direction between a first position (rest position) and a second position (active / extended position). The displacement is obtained by controlling the supply of a pressure fluid, such as pressurized gas / air, which acts against and drives the actuator piston disc. The actuator piston disc in turn acts directly or indirectly against the object to be displaced, for example a motor valve, to control its position.
    In the application with a motor valve, it applies that when the actuator piston disc is in the rest position, the motor valve is in contact with the same seat, and when the actuator piston disc is in that active position, the motor valve is open, ie. located at a distance from the seat of the relatives.
    In known actuators, the inlet valve body is as a rule also a slide valve body which is driven by an electrical element. For example, US8,973,54l discloses and shows that a first inlet valve and an outlet valve are joined and form part of a single spool valve body, where the spool valve body is either driven directly by the electrical element or the electrical element spool valve body controls indirectly via an undefined and indefinite "arrangement". , which is not at all described in the legend. arrangement "involves the electro-element displacing a However, it seems reasonable that such a" pilot-slave "pilot which indirectly drives the slide valve body which is a" slave "in that the electro-element / pilot controls the supply of entry pressure fluid acting against and displaces the slide valve body, as shown in for example US3,727,595.
    A disadvantage of the construction shown to have the first inlet valve and the second inlet valve connected to a single slide valve body is that the slide valve body has a large mass which counteracts rapid acceleration in connection with the actuator's instruction on operating state change, from inactive to inactive. In other words, the switching time from closed inlet duct to fully open inlet duct becomes unnecessarily long, and the initial movement of the vaginal valve body when the inlet duct is to be opened is then slowest, which is the opposite of what is desired. Furthermore, a so-called cross-pull will occur when the seat valve body is in motion from the first position to the second Cross-pull means that the inlet is open at the same time, which leads to pressure fluid passing straight through the actuator without performing useful work. the position. The only way to prevent cross-drawing in the construction shown, where a common sheath valve body is used, is that when the sheath valve body begins to displace, the inlet duct does not open until the post-outlet duct is closed, however this leads to unnecessarily long displacement of the sheath valve body. pressure fluid.
    The biggest problem is that there is always a certain leakage of pressure fluid past the spool valve body, which also results in increased consumption of pressure fluid that does not perform useful work. All pressure fluid consumption is directly linked to actuator energy consumption and thus it is central to keep consumption to a minimum.
    Brief Description of the Objects of the Invention The present invention aims to obviate the above-mentioned disadvantages and shortcomings of prior art actuators for axial displacement of an object and to provide an improved actuator. A basic object of the invention is to provide an improved actuator of initially defined type, which shortens the switching time off to a fully open inlet duct and reduces the consumption of pressure fluid.
    A further object of the present invention is to provide an actuator which completely eliminates leakage of pressure fluid when the actuator is at rest.
    Brief description of the features of the invention According to the invention, at least the basic object is achieved by means of the initially defined actuator, which the features are defined in the independent claim. Preferred embodiments of the present invention are further defined according to the claims.
    According to a first aspect of the present invention there is provided an actuator of the initially defined type, which is characterized in that the actuator further comprises a slave piston which is displaceable back and forth in a race between a rest position and an active position, and that the first inlet valve body is constituted of a seat valve body with a rest position where the inlet duct is closed, the slave piston being arranged to move its first inlet valve body during its movement from rest position to active position and move it to an active position where the inlet duct is open.
    Thus, the present invention is based on the insight that when the actuator is instructed to change the operating state from an idle state to an active state, for the purpose of displacing an object, a slave piston is used to frame the first inlet valve body. The slave piston is thus set in motion and has a significant speed when it hits / hits the first inlet valve body, which will be immediately displaced from its rest position (closed. This causes the accelerator to accelerate from a standstill if the inlet duct is immediately in full position) to its fully open active position. when the object, which the actuator is arranged to displace, open and maximum pressure fluid flow can flow into the first part of the cylinder volume during the entire displacement of the actuator-piston disk in the cylinder volume.
    By using a seat valve body as the first inlet valve body, it is ensured that no leakage of pressure fluid occurs when the actuator is in the inactive state, ie. when the first inlet valve body is closed.
    According to a preferred embodiment of the present invention, the actuator comprises a second inlet valve body device arranged in said inlet channel, the second inlet valve body being fixedly connected to the actuator piston disc and co-displaceable with the actuator piston disc between a position and a rest position. The second inlet valve body is arranged to close the inlet duct when the actuator piston plate is located at at least a predetermined distance from its resting position, i.e. a direct correlation between pressure pulse length and the displacement of the actuator piston plate / object is obtained.
    According to a preferred embodiment, the actuator further comprises an electrically controlled pilot valve arranged to communicate a control pressure to the slave piston via a control pressure channel, the pilot valve being arranged to assume a rest state, in which the control pressure channel is in fluid communication with a control fluid outlet in the pilot valve. , in which the control pressure duct is in fluid communication with a control fluid inlet.
    Further advantages and features of the invention will become apparent from the other dependent claims and from the following detailed description of preferred embodiments.
    Brief Description of the Drawings A more complete understanding of the above and other features and advantages of the present invention will become apparent from the following detailed description of preferred embodiments with reference to the accompanying drawings, in which: FIG. Fig. 1 is a schematic illustration of an actuator according to the invention according to a first embodiment, showing the actuator in an inactive state, Fig. 2 is a schematic illustration of the actuator according to Fig. 1, showing the actuator in an active state, Fig. 3 is a schematic illustration of an actuator according to the invention according to a second embodiment, Fig. 4 is a schematic illustration of an actuator according to the invention according to a third embodiment, and Fig. 5 is a schematic illustration of an actuator according to the invention according to a fourth embodiment.
    Detailed description of preferred embodiments Reference is made initially to Figures 1 and 2, which illustrate a first embodiment of the actuator according to the invention, and show the basic inventive concept exposed from other elements. The present invention relates to an actuator, generally designated 1, for axial displacement of an object, such as an actuator 1 for axial displacement of a gas exchange valve 2 of an internal combustion engine. The invention will now be described, by way of example but not limitation, with reference to an application in which the actuator 1 is used to drive one or more inlet valves or outlet valves 2 in an internal combustion engine. In the embodiment shown, the actuator 1 comprises an actuator housing 3, a cylinder 4 defining a cylinder volume , an actuator piston disc 5 which is arranged in and which in the axial direction is displaceable back and forth in said cylinder volume and an active between an inactive rest position (figure 1) position / lower turning position (figure 2). The actuator piston disc 5 divides said cylinder volume into a first, upper part 6 and a second, lower part 7. second part of the volume 7, the valve shaft of the gas exchange valve 2 in the cylinder and gas exchange valve 2 is biased upwards by means of a conventional valve spring or gas spring (not shown). The actuator piston disc 5 returns to its rest position by being biased, preferably by means of a spring means, in the upward direction in the figures. The spring means may be a mechanical spring or a gas spring, located in the second part 7 of the cylinder volume. In the case that the actuator piston disc drives an inlet or outlet valve to an internal combustion engine, the spring may be the valve spring which lifts the gas exchange valve to its closed position. Alternative solutions on how the bias voltage is to be realized are, however, conceivable and within the scope of the present invention.
    Furthermore, the actuator 1 preferably comprises an actuator which is fixedly connected to the piston rod, generally designated 8, and axially projecting from the actuator piston disk 5, and which together with the actuator piston disk form an actuator piston.
    The actuator piston rod 8 eliminates the risk of skew of the actuator piston disc 5. In the illustrated embodiment, the actuator piston rod 8 has a first, coarser portion 9, which is located at a distance from the actuator piston disc 5 and which closes tightly against a tapered portion 10. and connects the coarser portion 9 and the actuator piston disk 5. In this embodiment, the coarser portion 9 forms a second inlet valve body which will be described below.
    The actuator 1 also comprises a pressure fluid circuit, preferably pneumatic, arranged for controllable supply of a gas or gas mixture, for example air, to the first part 6 of the cylinder volume to create a displacement of the actuator piston disc 5 from the rest position to the active position, and provides controllable gas evacuation or evacuation the gas mixture from the first part 6 of the cylinder volume to create a return movement of the actuator piston disc 5 from the active position to the rest position.
    The pressure fluid circuit comprises an inlet channel 11, which extends between a pressure fluid inlet 12 in the actuator housing 3 and the first part 6 of the cylinder volume, and an outlet channel 13, which extends between the first part 6 of the cylinder volume and a said inlet channel 11 is (HP), the pressure fluid outlet 12 in actuator housing 3 in actuator connected to a pressure fluid source and said outlet channel 13 is connected via the pressure fluid outlet 14 to a pressure fluid sink (LP). In other words, the pressure fluid inlet 12 of the actuator 1 is arranged to be connected to the pressure fluid source (HP), connected to the pressure fluid sink and the pressure fluid outlet 14 is arranged to (LP). The pressure fluid source can be the compressor belonging to the internal combustion engine with or without an associated tank, or only a pressure tank. The pressure fluid lowering tank can be any point with a lower pressure than that generated in the pressure fluid source, for example a line that leads back to the compressor. The pressure fluid circuit is preferably a closed system with elevated return pressure, i.e. and the pressure fluid source the pressure fluid sink (LP) has for example 4-6 Bars pressure, (HP) has for example 15-25 Bars pressure. The actuator 1 comprises a first inlet valve body 15 arranged in said inlet channel 11 for controlling the flow of pressure fluid in the inlet channel 11 past the position where it suburban. the inlet valve body 15 is located, arranged to open and close the inlet duct 11. Thus, the inlet duct 11 is closed when the first inlet valve body 15 is located in its inactive rest position, and open when the first inlet valve body 15 is located in its active position. It is essential for the present invention that the first inlet valve body 15 is constituted by a seat valve body, thus obtaining a geometrically well-defined rest position for the inlet valve body 15 and that the inlet duct 11 is free from leakage past the first inlet valve body 15 when its rest position is located. Preferably, the inlet valve body 15 is biased by a spring 16 in a direction in which the inlet duct 11 is closed.
    The actuator comprises a slave piston 17 which is reciprocable in a race 18 in the actuator housing 3 between a rest position and an active position, the slave piston 17 being arranged during its movement from rest position to active position frame the first inlet valve body 15 and displaced therefrom to the active position. where the inlet duct 11 is open. The co-term frame means that the slave piston 17 is in motion when it hits the stationary inlet valve body 15 which is thus set in motion. After framing, the slave piston 17 drives the inlet valve body 15 to and holds it in the inactive position. Immediately after the slave piston 17 has opened / framed the inlet valve body 15, it is preferred that the inlet valve body 15 obtains a higher speed than the slave piston 17 and in this way a faster opening of the inlet duct 11 is provided. The slave piston 17 then chases after the first inlet spring valve body 19 the intermediate slave piston 17 and the first inlet valve body 15, whereupon the inlet valve body 15 helps to return and retains the slave piston 17 in its rest position when the inlet valve body 15 closes the inlet channel 11.
    Preferably, the end of the slave piston 17 arranged to frame the first inlet valve body 15 comprises an axially projecting pin 17 ', which is arranged in a telescopic ratio relative to a sleeve / recess 15' of the first inlet valve body 15. It should be pointed out that the reverse relationship may occur. , i.e. that the slave piston 17 comprises a sleeve or recess and the first inlet valve body 15 comprises a pin lowering of the first inlet valve body 15.
    This construction entails the elimination of the risk for the actuator. In the embodiment shown, an electrically controlled pilot valve 20, also referred to as a multi-way valve, is arranged to communicate a control pressure to the slave piston 17 via a control pressure duct 21. By electrically controlled is meant controlled by an electromagnetic device 22, by means of a piezoelectric device, etc. The control pressure duct 21 thus extends from the pilot valve 20 to the end of the slave piston 17 which is opposite the end of the slave piston 17 which is arranged to frame the inlet valve body 15. The pilot valve 20 is arranged to assume a rest state (Figure 1). in which the control pressure duct 21 is in fluid communication with a control fluid outlet 23 of the pilot valve 20, and an active state (Figure 2), respectively, in which the control pressure duct 21 is in fluid communication with a control fluid inlet 24. The control fluid inlet 24 of the pilot valve 20 is arranged to be connected to a pressure fluid source (HP), and the control fluid outlet 23 of the pilot valve 20 is arranged to be connected to a pressure fluid sink (LP).
    It should be pointed out that in all drawings the pilot valve 20 is drawn located outside the actuator housing 3, which is fully conceivable, however, it is preferred that the pilot valve 20 and the control pressure duct 21 are located wholly or partly within the actuator housing 3.
    In a preferred embodiment, the pilot valve 20 comprises a pilot valve body arrangement 25, which is reciprocable between a rest position and an active position, the pilot valve body arrangement 25 being biased by means of a spring 26 in the direction of its rest position. The solenoid 22 is arranged to displace the pilot valve body arrangement 25 in the direction of its active position when activating the said solenoid 22. Activation of the solenoid 22 takes place in response to state change instruction from a control unit of the engine, i.e. an instruction to open the motor valve 2, which in turn can be initiated, for example, based on the position of the crankshaft.
    The actuator 1 preferably comprises a second inlet valve body which is arranged in said inlet duct 11, and which in the embodiment shown consists of the coarser portion 9 of the actuator piston rod 8, i.e. the second inlet valve body 9 is fixedly connected to the actuator piston disc 5 and co-slidably with the actuator piston disc 5 between a rest position and an active position, and is arranged to open and close the inlet duct 11, respectively. The second inlet valve body rest position. The second inlet valve body is arranged to keep the inlet duct 11 closed when the actuator piston disc 5 is located at at least a predetermined distance from its rest position.
    According to the embodiment shown, the first inlet valve body 15 and the second inlet valve body 9 are arranged in series with each other, and preferably the second inlet valve body 9 is arranged between the first inlet valve body 15 and the first part 6 of the cylinder volume, since the first inlet valve body 15 provides better the inlet valve body 9, which is constituted by a slide valve body.
    The actuator 1 also comprises an outlet valve body 27 arranged in said outlet channel 13 for controlling the flow of pressure fluid in the outlet channel 13 past the position where the outlet-ie. the valve body 27 is located, arranged to open or close the outlet duct 13. The outlet valve body 27 is in the first embodiment constituted by a slide valve body. The outlet valve body 27 is biased by means of a spring 28 in the direction of the same rest position, in which the outlet channel 13 is open. According to the first embodiment, the pilot valve 20 is arranged to communicate said control pressure to the outlet valve body 27 via said control pressure duct 21. The control pressure duct 21 thus extends from the pilot valve 20 to the end of the outlet valve body 27 opposite the end of the outlet valve body 27. Thus, the outlet valve body 27 is separated from the slave piston 17 in the first embodiment according to Figures 1 and 2. the body 27 to completely or largely close the outlet duct 13. When the pilot valve 20 is activated, the outlet valve comes before the slave piston 17 hits and opens the first inlet valve body 15. This avoids cross-drawing and unnecessary consumption of impression fluid.
    Reference is now made to Figure 3 which shows a second embodiment of the actuator 1 according to the invention. Only differences in relation to other embodiments will be described.
    In the second embodiment, the outlet valve body 27 is connected to and jointly displaceable with the slave piston 17. This means that the outlet duct 13 will be completely or largely partially closed by the outlet valve body 27 before the inlet duct 11 is opened by the first inlet valve body 15. Thus pressure avoidance is avoided. When the outlet valve body 27 is connected to the slave piston 17, no separate spring is needed to bias the outlet valve body 27 to its rest position.
    The actuator 1 preferably comprises a hydraulic circuit, which comprises a locking volume 29, a non-return valve 30 and a hydraulic valve, the actuator piston rod 8 being arranged to be displaced axially relative to said locking volume 29 in connection with axial displacement of the actuator piston disc 5 in the cylinder volume. the liquid-filled locking volume 29 via the non-return valve 30 and out of the locking volume 29 via the hydraulic valve. The hydraulic valve comprises a hydraulic valve body 31 which is reciprocable between a rest position, in which the reading volume 29 is open, and an active position, in which the reading volume 29 is closed, the hydraulic valve body 31 in the embodiment shown is biased by means of a spring 32 in the direction of other words, when the actuator piston of the active one is displaced from the rest position thereof. the position (figure 1) position (figure 2) leaves the actuator piston rod 8 space for flow of liquid into the locking volume 29 closed, and then the actuator piston prev juts from the active 12 position to the rest position, the hydraulic valve must be pre-molded, after which the liquid can be forced out of the locking volume 29.
    According to the second embodiment, the pilot valve 20 is arranged to communicate said control pressure to the hydraulic valve body 31 via said control pressure channel 21. The control pressure channel 21 thus extends from the pilot valve 20 to the end of the hydraulic valve body 31 opposite the end of the hydraulic valve body 31 against which the spring 32 acts. Thus, the hydraulic valve body 31 is separated from the slave piston 17 in the second embodiment according to Figure 3. It should be pointed out that in the first embodiment, Figures 1 and 2, the hydraulic valve body 31 is connected to and simultaneously displaceable with the outlet valve body 27. When the hydraulic valve body 31 is connected to the valve body 27 in the first embodiment, no separate spring is needed to bias the hydraulic valve body 31 to its rest position.
    It should be pointed out that the outlet valve body 27 and the hydraulic valve body 31 have the same functions regardless of location. Reference is now made to Figure 4 which shows a third embodiment of the actuator according to the invention. Only differences in relation to other embodiments will be described.
    In the third embodiment, the outlet valve body 27 is separate from the slave piston 17, and the hydraulic valve body 31 is connected to and jointly displaceable with the slave piston 17. When the hydraulic valve body 31 is connected to the slave piston 17, no separate spring is needed to bias the hydraulic valve body 31 to the same position. In the third embodiment, the outlet valve body 27 is constituted by a seat valve body which is preferably biased by means of a spring 33 in the outlet channel 13 in the closing direction. The outlet valve body 27 preferably comprises a single control pin 27 'to eliminate the risk of tilting thereof. Like the first embodiment, the pilot valve 20 is arranged to communicate said control pressure to the outlet valve body 27 via said control pressure channel 21. The ratio of pressurizable areas of the outlet valve body 27 ensures correct operation. Reference is now made to Figure 5 which shows a fourth, most preferred, embodiment of the actuator according to the invention. Only differences in relation to other embodiments will be described. In the fourth embodiment, both the outlet valve body 27 and the hydraulic valve body 31 are connected to and simultaneously displaceable with the slave piston 17. This embodiment includes the least number of moving parts.
    Hereinafter, the function of the actuator 1 will be described, regardless of embodiment unless otherwise stated.
    In the initial position, the actuator 1 is in its dormant state (the separate pilot valve 20 is in the dormant state, for example Figure 1), i.e. and the solenoid 22 is inactivated, and low fluid pressure acts in the control pressure passage 21. The first inlet valve body 15 is in the closed position, the actuator piston disc 5 is in the rest position / upper end position and the second inlet valve body 9 is in the open position, the outlet valve body and the hydraulic valve body 31 is open. (See figure 1) Thus, the actuator 1 consumes neither current nor pressure fluid in the rest position.
    When the state change signal / instruction is given by the control unit that the actuator 1 is to displace the object / the solenoid 22 and the pilot valve 20 are activated. This causes the motor valve to switch to the active state (See Figure 2). High fluid pressure acts in the control pressure duct 21, whereupon the slave piston 17 and the hydraulic valve body 31 against their active positions, at the same time as the outlet valve body 27 is either displaced towards its active position or secured in the same active position depending on the embodiment. When the slave piston 17 has reached velocity, the slave piston 17 hits the inlet valve body 15, which is rapidly displaced towards its active position and immediately opens the inlet duct 11. When the inlet duct 11 is open, pressure fluid from the pressure fluid source (HP) begins via the inlet duct. part 6 top of the actuator piston disc 5 and displaces the actuator piston in the downward direction. Liquid is sucked into the locking volume 29 past the non-return valve 30 when the actuator piston rod 8 is displaced downwards. The outlet valve body 27 is kept closed. When the actuator piston disk 5 is displaced a predetermined distance, the second inlet valve 9 cuts off the pressure fluid flow in the inlet duct 11, i.e. prevents continued inflow of pressure fluid from the pressure fluid source (HP) of pressure fluid from the pressure fluid source to the cylinder volume 5. displacement for a distance while being cut off, the pressure fluid in the first part 6 of the cylinder volume continues to expand. position / lower turning position, the actuator piston disc 5 is locked. When the object / motor valve 2 is to begin its return movement, the solenoid 22 is deactivated, whereupon the pilot valve 20 enters the rest state of the same, and low fluid pressure reappears in the control pressure channel 21. The slave piston 17 is allowed to advance. the valve body 15 closes the inlet duct 11 and helps to return the slave piston 17, the hydraulic valve body 31 opens to allow evacuation of liquid from the locking volume 29, the outlet valve body 27 opens the outlet duct 13, and the actuator piston disc 5 can be displaced to the spring position.
    Possible modifications of the invention The invention is not limited only to the embodiments described above and shown in the drawings, which are for illustrative and exemplary purposes only. This patent application is intended to cover all adaptations and variants of the preferred embodiments described herein, and consequently the present invention is defined by the wording of the appended claims and thus the equipment may be modified in any conceivable manner within the scope of the appended claims.
    It should also be pointed out that all information about / concerning terms such as above, below, upper, should be lower, etc., is interpreted / locked with the equipment oriented in accordance with the figures, with the drawings oriented in such a way that the reference designations can be locked correctly. such terms are merely interrelated in the embodiments shown, which conditions may change if the equipment according to the invention is provided with a different construction / design.
    It should be pointed out that even if it is not explicitly stated that features from a specific design can be combined with the features in another design, this should be considered obvious when possible.
    权利要求:
    Claims (16)
    [1]
    An actuator for axially displacing an object, the actuator comprising: (5), wherein the actuator piston disk (5) - an actuator piston disk - a cylinder volume, dividing said cylinder volume into a first part (6) and a second part (7) and ar axially reciprocable in said cylinder volume between a rest position and an active position, (11) and the first part (15) of the cylinder volume extending between a pressure (6) arranged in said inlet - an inlet channel (12) - a first inlet valve body (11), - an outlet duct first part (6) - an outlet valve body (13), characterized by, (17) rest position and an active position, fluid inlet channel (13) and a pressure fluid outlet (27) extending between the cylinder volume (14). ), arranged in said outlet channel and that the actuator (1) further comprises a slave piston which is displaceable back and forth in a race (18) between one and that the first inlet (15) consists of a seat valve body with a (11) arranged to during its movement from the valve body rest position then the inlet duct is closed, the resting position to the active position (17) framing said first (15) position where the inlet duct slave piston and displacing it to an active (11) inlet valve body is open.
    [2]
    Actuator according to claim 1, wherein the actuator (1) second inlet valve body (9) arranged in said inlet channel (11), connected to the actuator piston disc (5), the second inlet valve body (9) being fixed and co-displaceable with actuator piston (5) piston position ( an asset position. is stuck
    [3]
    An actuator according to claim 2, wherein an actuator piston rod (8) connected to and axially projecting from the actuator piston plate 17 (5) forms one at said second inlet valve body (8). (5), and together with the actuator piston disc actuator piston, (9) forms part of said actuator piston rod
    [4]
    Actuator according to claim 2 or 3, (15) wherein the second inlet valve body (9) wherein the second inlet valve body (11) is in the rest position. is established to allow fluid flow in the inlet duct is located in
    [5]
    Actuator according to claim 4, wherein the second inlet valve body (11) is located on at least one in (9) is arranged to prevent fluid flow in the inlet duct and the second inlet valve body (9) predetermined distance from its rest position.
    [6]
    An actuator according to any one of claims 2-5, wherein the first inlet (15) arranged in series with each other in said inlet channel and the second inlet valve body (9) are (11). valve body
    [7]
    Actuator according to claim 6, wherein the second inlet valve body (9) is arranged between the first inlet valve body (15) and the first part (6) of the cylinder volume.
    [8]
    Actuator according to any one of the preceding claims, (12) and wherein the pressure fluid outlet (LP). wherein the pressure fluid inlet source (HP), connected to a pressure fluid sink is arranged to be connected to a pressure fluid (14) is arranged that wherein the actuator (20) (17) via a control
    [9]
    An actuator according to any one of the preceding claims, further comprising an electrically controlled pilot valve arranged to communicate a control pressure to the slave piston pressure duct (21), (20) a quiescent state, in which the control pressure duct is arranged to occupy (21) (23) the pilot valve. fluid communication with a control fluid outlet (20), the channel (24). respectively an active state, (21) in which control pressure is in fluid communication with a control fluid inlet 18
    [10]
    An actuator according to claim 9, (24) of (20) and wherein the control fluid outlet wherein the control fluid inlet pilot valve is arranged to be connected to a pressure fluid source (HP), (20) is arranged to be connected to a pressure fluid sink (23) of the pilot valve (LP) . (20) which is forthcoming
    [11]
    Actuator according to claim 9 or 10, wherein the pilot valve (25), and is displaceable between a rest position and an active (25) in the direction of its rest position. comprises a pilot valve body arrangement position wherein the pilot valve body arrangement is biased by a spring (26) (20) which is arranged to displace (25) active position upon actuation of said solenoid
    [12]
    The actuator of claim 9 or 10, (22), the pilot valve body arrangement wherein the pilot valve comprises a solenoid direction thereof (22).
    [13]
    An actuator according to any one of claims 9-12, wherein the pilot valve (20) the outlet valve body is arranged to communicate said control pressure to (27) via said control pressure channel (21).
    [14]
    Actuator according to claim 3, wherein the same comprises a hydraulic circuit, which comprises a locking volume (29), a jaw (30) is arranged to be displaced in axial direction relative to said locking volume (29) in the cylinder volume. valve and a hydraulic valve, the actuator piston rod (8) in connection with axial displacement of the actuator piston disc (5)
    [15]
    An actuator according to claim 14, (31) between a rest position, wherein the hydraulic valve comprises one which is forward and displaceable (29) is closed. hydraulic valve body in which the reading volume and (29) is open, an active position in which the reading volume
    [16]
    Actuator according to claim 15, (31) and (27) displaceable with the slave piston wherein the hydraulic valve body is connected to and co-located (17). the outlet valve body
    类似技术:
    公开号 | 公开日 | 专利标题
    SE543886C2|2021-09-14|Actuator for axial displacement of a gas exchange valve at an internal combustion engine
    US20130025552A1|2013-01-31|Hydraulically actuated camshaft adjusting device
    SE538239C2|2016-04-12|Actuator for axial displacement of an object
    SE1550461A1|2016-10-17|Actuator for axial displacement of an object
    SE535886C2|2013-02-05|Pressure Pulse Generator
    SE522163C2|2004-01-20|Method and device for pressure pulse generation
    EP3058235B1|2020-04-08|Combustion engine and gas handling system for pneumatic operation of a valve actuator
    SE1550460A1|2016-10-17|Actuator for axial displacement of an object
    US6928966B1|2005-08-16|Self-regulating electrohydraulic valve actuator assembly
    SE525018C2|2004-11-09|Device for controlling a hydraulically driven motor
    SE520993C2|2003-09-23|Pressure Pulse Generator
    US10738884B2|2020-08-11|Hydraulic switching assembly for a motor vehicle
    SE522165C2|2004-01-20|Method and apparatus for generating pressure pulses
    SE526975C2|2005-11-29|Method for generating pressure pulses, pressure pulse generator and one with such a piston motor
    SE1550459A1|2016-10-17|Multi-way valve and actuator comprising such a multi-way valve
    SE540409C2|2018-09-11|Combustion engine and cover composition therefore
    SE1451233A1|2016-04-16|Actuator for axial displacement of an object
    SE524142C2|2004-07-06|Combustion engine device
    JP4321448B2|2009-08-26|Valve control mechanism
    JP2008063950A|2008-03-21|Solenoid control valve and hydraulic drive unit using the solenoid control valve
    JP2007247781A|2007-09-27|Multistage speed controller for selectively ventilating a plurality of controlled flow setting circuits
    同族专利:
    公开号 | 公开日
    EP3283738B1|2019-06-05|
    US10577988B2|2020-03-03|
    JP2018513316A|2018-05-24|
    WO2016167715A1|2016-10-20|
    EP3283738A1|2018-02-21|
    CN107567535B|2020-01-10|
    CN107567535A|2018-01-09|
    SE540425C2|2018-09-11|
    US20180119583A1|2018-05-03|
    BR112017022039A2|2018-07-03|
    RU2017134931A|2019-04-05|
    KR20170138493A|2017-12-15|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE1151702B|1961-06-22|1963-07-18|Bbc Brown Boveri & Cie|Pneumatically operated, delayed, suddenly responding valve|
    CH503892A|1969-08-30|1971-02-28|Bosch Gmbh Robert|Control of inlet and outlet valves of internal combustion engines by liquid|
    SE522163C2|2002-05-30|2004-01-20|Cargine Engineering Ab|Method and device for pressure pulse generation|
    SE522165C2|2002-05-30|2004-01-20|Cargine Engineering Ab|Method and apparatus for generating pressure pulses|
    SE535886C2|2011-06-03|2013-02-05|Ase Alternative Solar Energy Engine Ab|Pressure Pulse Generator|
    US20140001389A1|2012-06-27|2014-01-02|Ross Arthur Schade|Axial fluid valves having linear actuators|
    SE536617C2|2012-06-28|2014-04-01|Cargine Engineering Ab|Method and positioning sensor composition for determining a mutual position between a first object and another object|
    SE538239C2|2013-07-08|2016-04-12|Freevalve Ab|Actuator for axial displacement of an object|SE540421C2|2015-04-16|2018-09-11|Freevalve Ab|Actuator for axial displacement of an object|
    SE2050230A1|2020-03-02|2021-09-03|Freevalve Ab|Actuator and method for operating an actuator|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    SE1550461A|SE540425C2|2015-04-16|2015-04-16|Actuator for axial displacement of an object|SE1550461A| SE540425C2|2015-04-16|2015-04-16|Actuator for axial displacement of an object|
    JP2018506074A| JP2018513316A|2015-04-16|2016-04-15|Actuators for axial displacement of objects|
    CN201680022259.3A| CN107567535B|2015-04-16|2016-04-15|Actuator for axial movement of an object|
    RU2017134931A| RU2017134931A|2015-04-16|2016-04-15|EXECUTIVE DEVICE FOR AXIAL DISPLACEMENT OF THE OBJECT|
    PCT/SE2016/050326| WO2016167715A1|2015-04-16|2016-04-15|Actuator for axial displacement of an object|
    BR112017022039A| BR112017022039A2|2015-04-16|2016-04-15|trigger for axial displacement of an object|
    KR1020177033158A| KR20170138493A|2015-04-16|2016-04-15|Actuator for axial displacement of object|
    EP16726675.8A| EP3283738B1|2015-04-16|2016-04-15|Actuator for axial displacement of an object|
    US15/566,993| US10577988B2|2015-04-16|2016-04-15|Actuator for axial displacement of an object|
    [返回顶部]