• 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:
    A controllable hydraulic valve mechanism for reciprocating engines or pumps including a drive piston, operable by a cam is provided with control edges and projects into a drive cylinder; a working piston which operates the valve directly and is guided in a working cylinder. The valve mechanism provides a continuous communication between the drive cylinder interior and a second reservoir which absorbs a substantial part of the energy produced by the lift of a cam. Control sleeves surround the drive piston and are operable by actuating means operable from outside the drive cylinder. Each of the control sleeves has a control ring groove which cooperates with control edges provided in the drive piston. A further sleeve in the working cylinder surrounds the working piston, is rotatable by actuating means operable from outside the working cylinder, and is provided with a control ring groove for varying the valve lift. By means of this further sleeve, the working cylinder interior is connectable with a discharge conduit leading to the first reservoir. In this connection, the end face and the control ring groove are matched in such a way that a small amount of control fluid flows into the first reservoir during each valve lift adjustment. A cooler is provided in the refilling conduit.
    公开号:SU950198A3
    申请号:SU792774454
    申请日:1979-06-08
    公开日:1982-08-07
    发明作者:Цюрнер Хансюрген；Фурманн Вольфганг
    申请人:Машиненфабрик Аугсбург-Нюрнберг Аг(Фирма)；
    IPC主号:
    专利说明:

    The invention relates to mechanical engineering and can be used as a valve actuator, mainly internal combustion engines.
    Known adjustable hydraulic valve timing for an internal combustion engine, containing a master cylinder with a drain channel, and the inner cylinder cavity is equipped with a movable intermediate sleeve with a drive and an annular control · groove, a plunger with transverse and longitudinal drillings interacting with a camshaft cam, a working cylinder, in the inner cavity of which a plunger is installed, which interacts with a spring-loaded valve, and the master and working cylinders are connected enes control conduit, the reservoir for the working fluid · fueling and drain pipes [1].
    However, the known device has low accuracy and stability.
    The purpose of the invention is improving accuracy and stability.
    To achieve this goal, the working cylinder is equipped with a movable intermediate sleeve with a control annular groove, and the sleeve is kinematically connected to the drive, and the master cylinder is equipped with a buffer cavity located on it and communicated through the throttling hole with the drain pipe and through drilling - with the plunger cavity of the master cylinder , and an additional intermediate movable sleeve with a control annular groove and a drive, and a throttle is installed in the drain channel of the master cylinder.
    In addition, the drive bushings of the working and master cylinders are made in the form of a worm pair. The sides of the control annular groove of the working cylinder sleeve are made inclined. One of the sides of the control annular grooves of both bushes of the master cylinder is horizontal, and the other facing the cam is inclined. A cooling device is installed on the feed pipe. The feed pipe is made with a branch in which a check valve is installed.
    The upper end surface of the plunger of the working cylinder is inclined and provided with wedge-shaped notches.
    In FIG. 1 shows an adjustable hydraulic valve actuator for gas distribution 5; in FIG. 2 - the upper part of the slider of the working cylinder (scaled up).
    The device comprises a camshaft cam 1 leading to the action of the plunger 2, which is equipped with a longitudinal drilling 3, connected by two lateral transverse drilling 4 and. The plunger 2 moves in two intermediate rotating sleeves 15 b and 7, which, in turn, are installed in the inner cavity of the master cylinder 8 and are sealed from each other and from the cylinder 9-11 by seals. The drive of the bushings 6 and 7 is made in the form of worm wheels 12, 13 and the worms 14 and 15 in engagement with them. The worms 14 serve to rotate the bushings b and 7 to any desired angular position. The bushings are made with control ring grooves and 17, and one of the sides of the control ring grooves of both bushings is made horizontal, and the other facing the cam is inclined.
    The control annular grooves 16 and 17 are connected by corresponding drillings 18 and 19 with the annular grooves 20 and 21 of the cylinder 8, which, in turn, 35 communicate with the pipelines via channels 22 and 23. Channel 23 has a throttle 24 and is connected to a drain pipe 25,.
    leading to reservoir 26 for working fluid (mainly oil). The supraplunger cavity 27 of the driving cylinder 8 is connected through drilling 28 to the buffer cavity 29 (can be made with a spring-loaded piston 45), which is connected through the throttling hole 30 'to the drain pipe 31.
    The master cylinder 8 is connected by a control pipe 32 to the working cylinder 33, the working plunger 34 of which controls a spring-loaded gas distribution valve 35. The upper end surface 36 of the plunger 34 of the working cylinder 33 is made inclined and provided with wedge-shaped notches 37 to improve the dosage of small portions of oil that are discharged for constant updates.
    The plunger 34 is installed in the intermediate movable sleeve-38, supplied. θ wife control annular groove 39, the sides of which are made inclined. The sleeve 38 is located in the inner cavity of the working cylinder 33 and sealed from it 65 by seals 40 and 41. The control annular groove 39 is connected through the drilling 42 to the annular groove 43 of the working cylinder, which, through the drilling 44, is connected to a pipe 45 through which oil is directed to the reservoir 26 The drive of the sleeve 38 is also made in the form of a worm wheel 46 and a worm 47, Oil from the reservoir 26 is supplied to the feed line 48 by means of a high pressure pump 49 with a bypass valve 50, which is a pressure stabilizer. In the feed line 48 are installed: a cooling device 51 to maintain a constant oil temperature, a smoothing receiver 52 for. reduce vibration from the pump and check valve 53 to prevent back flow of oil to the pump.
    In order to prevent underpressure in the buffer cavity 29 during the reverse stroke of the plunger, the feed pipe is made with a branch 54 in which the check valve 55 is installed.
    The device operates as follows.
    In the initial period of time, when the cam 1 moves the plunger 2 upwards, the transverse holes 4 and 5 are not in communication with the corresponding control ring grooves 16 and 17. The oil located in the cylinder 8 is sent to the buffer cavity 29 and is compressed there. A small part of the oil through the throttling hole 30 is constantly sent to the reservoir 26. Due to this, there is a continuous separation of air from the oil and the air escapes at the end of the pipe 31 in the form of bubbles, while the oil flows into the reservoir 26 for further use.
    When the early opening of the valve 35 is required, the sleeve 6 is rotated 180 ° relative to the depicted position. Cross-cutting 4 and the control annular groove 16 match, the valve opens. When a later opening of the valve 35 is required, the sleeve is approximately in the position shown in FIG. 1 position. The opening of the valve 35 occurs with a delay, since the cam 1 must make an incomplete revolution before the transverse drilling 4 and the groove 16 overlap each other. On the other hand, the opening of the valve 35 occurs under the pressure of the oil located in the buffer cavity 29. When the transverse drilling 4 and the control annular groove 16 match, the oil flows out of the buffer cavity 29 through the drilling 28, the longitudinal drilling 3, the transverse drilling 4, the drilling 18 , a groove 20 and a channel 22 into the control pipe 32, as a result of which the valve opens completely. Consequently, the change in the opening time is no longer associated with a change in the stroke of the 5-valve. If it is necessary to reduce the valve stroke Λ, it is only necessary to turn the sleeve 38. As soon as the inclined end surface 36 of the working plunger 34 is combined with the control annular groove 39, the oil will flow through the drilling 42 and the annular groove 43 and the pipe 45 into the reservoir 26, increasing the stroke valve will not happen. If it is necessary to adjust the closing time of the valve 35, then turn the intermediate sleeve 7. Due to this, the pressure decrease in the inner cavity of the working cylinder occurs earlier or later, depending on the coincidence time of the transverse drilling 5 with the control annular groove 17.
    Thus, the proposed actuator allows you to independently control the opening time, closing time and valve stroke, as well as automatically carry out constant cooling, continuous updating of the working fluid and the separation of air from oil.
    权利要求:
    Claims (7)
    [1]
    The upper end surface of the working cylinder plunger is inclined and provided with wedge-shaped notches. FIG. Figure 1 shows an adjustable leveling valve drive; in fig. 2 - the top part of the working cylinder cylinder (zoom out). The device comprises a cam 1 of the distributor shaft, which actuates the plunger 2, which is provided with longitudinal drilling 3, connected by two lateral transverse drilling 4 and. The plunger 2 moves in two intermediate sleeves C and 7, which, in turn, are mounted in the inner cavity of the driver cylinder 8 and sealed from each other and from the cylinder 9-11 by seals. The drives b and 7 are made in the form of worm gears 12, 13 and the screws 14 and 15 that are in engagement with them. Screws 14 and 15 serve to turn the sleeves b and 7 to any desired angular position. The bushings are made with control grooves 16 and 17, with one side of the control ring grooves of both sleeves being horizontal, and the other facing the cam is inclined. The control annular grooves 16 and 17 are connected by corresponding drills 18 and -19 to the annular grooves 20 and 21 of the cylinder 8, which, in turn, are connected with the pipes 22 by means of the channels 22 and 23. Channel 23 has a choke 24 and is connected to a drain pipe 25,. leading to the reservoir 26 for the working fluid (mainly oil), the extra plunger cavity 27 of the driver cylinder 8 is connected through the hole 28 to the buffer cavity 29 (can be performed with a spring-loaded piston), which is connected to the drain pipe 31 through the throttling hole 30. the cylinder 8 is connected by the control pipe 32 to the working cylinder 33, the working plunger 34 of which controls the spring-loaded camshaft valve 35. The upper face 36 of the plunger 34 of the working cylinder 33 is inclined and sleeping bent wedge us 37 to improve the dosing of small portions of oil discharged for constant renewal. A plunger 34 is installed in an intermediate movable bushing.38 provided with a control ring groove 39, the sides of which are inclined. The sleeve 38 is located in the inner cavity of the working cylinder 33 and sealed from it by seals 40 and 41. The control annular groove 39 through drilling 42 is connected with the annular groove 43 of the working cylinder, which through drilling 44 - with the pipeline 45 through which the oil is directed into the reservoir 26. The sleeve 38 also drives the worm gear 46 and the screw 47. The oil from the reservoir 26 is supplied to the feed pipe 48 by means of a high-pressure pump 49 with a relief valve 50, which is a pressure stabilizer. In the feed line 48, the following are installed: a cooling device 51 to maintain a constant oil temperature, a smoothing receiver 52 dl. reducing vibrations from the pump and non-return valve 53 to prevent the oil from flowing back to the pump. In order that in the buffer cavity 29 there is no underpressure during the return stroke of the plunger, the feed pipe is made with a branch 54 in which a check valve 55 is installed. The device operates as follows. In the initial period of time, when the cam 1 moves the plunger 2 upwards, the transverse drills 4 and 5 do not communicate with the corresponding control ring grooves 16 and 17. The oil in the cylinder 8 is directed into the buffer cavity 29 and compressed. A minor portion of the oil through the choke hole 30 is continuously directed to the reservoir 26. Due to this, there is a continuous separation of air from the oil, with air escaping at the end of the pipeline 31 in the form of bubbles, while the oil flows into the reservoir 26 for further use. When early opening of the valve 35 is required, the sleeve 6 rotates 180 ° with respect to the depicted position. Transverse drilling 4 and control groove 16 are aligned, the valve opens. When a later opening of the valve 35 is required, the sleeve is approximately in the position shown in FIG. 1 position. The opening of the valve 35 occurs with a delay, since the cam 1 must make an incomplete turn before the cross-drilling 4 and the groove 16 will overlap each other. On the other hand, the opening of the valve 35 occurs under the action of the pressure of the oil in the buffer cavity 29. When the transverse drilling 4 and the control annular groove 16 coincide, the oil flows out of the buffer cavity 29 through the drilling 28, pro (Partial drilling 3, transverse drilling : hole 4, drilling 18, groove 20 and channel 22 into control line 32, causing the valve to fully open. Consequently, changing the opening time is no longer associated with changing the valve stroke. If you want to reduce the valve stroke, you only need turn sleeve 38. As soon as the inclined face 36 of the working plunger 34 is aligned with the control annular groove 39, the oil will be drilled 42 and the annular groove 43 and the pipeline 45 will flow into the reservoir 26, the valve stroke will not increase. 35, the intermediate sleeve 7 is then rotated. Due to this, the pressure in the inner cavity of the working cylinder is reduced sooner or later, depending on the time that the cross-drilling 5 coincides with the control annular groove In this way, the proposed actuator allows independent control of the opening time, closing time and valve stroke, as well as automatically continuously cooling, continuously renewing the working fluid and separating air from the oil. Claim 1. Adjustable hydraulic valve timing drive, mainly for an internal combustion engine, containing a master cylinder with a drain channel, the inner cavity of a sleep cylinder with a movable intermediate sleeve with a drive and an annular control groove, a plunger with transverse and longitudinal drills, interacting with the cam of the camshaft, working cylinder, in the internal cavity of which a plunger is installed that interacts with under the spring-loaded valve, moreover Adding and working cylinders are connected to the control pipelines, a reservoir for the working fluid, feed and drain pipelines, characterized in that, in order to improve the accuracy and stability of work, the working cylinder is equipped with a movable intermediate sleeve with a control ring groove, and the sleeve is kinematically connected with a drive, and the master cylinder is equipped with a buffer cavity placed on it and communicated through a throttling hole with a drain pipe and, through drilling, with a plunger cavity of the master a cylinder, and an additional intermediate movable sleeve with a control annular groove and actuators, and a choke is installed in the drain channel of the master cylinder.
    [2]
    2. The drive according to claim 1, characterized in that the drive sleeves of the working and setting cylinders are made in the form of a worm pair.
    [3]
    3. The actuator according to claim 1, characterized in that the sides of the control annular groove of the sleeve of the working cylinder are inclined.
    [4]
    4. Drive POP.1, characterized in that one of the sides of the control annular grooves of both sleeves of the master cylinder is made horizontal, and the other facing the cam is inclined.
    [5]
    5. The drive according to claim 1, characterized in that a cooling device is installed in the feed pipe.
    [6]
    6. The actuator according to claim 1, characterized in that the feed line is made with a branch in which a check valve is installed.
    [7]
    7. The actuator according to item 1, one of which, with the QTO, the upper end surface of the working cylinder plunger is inclined and provided with wedge-shaped notches. Sources of information taken into account during the examination 1. Patent of Germany No. 2448311, cl. F 01 L 9/02, published 1976.
    类似技术:
    公开号 | 公开日 | 专利标题
    SU950198A3|1982-08-07|Controlled hydraulic drive of gas-distribution
    SU997614A3|1983-02-15|Hydraulic actuator for directional gas valves
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    US4106446A|1978-08-15|Internal combustion engine with auxiliary combustion chamber
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    FR2358543A1|1978-02-10|COMPRESSED AIR ENGINE FEATURING DOUBLE LOBE CAMS
    US2160978A|1939-06-06|Fuel pump
    EP0186341A1|1986-07-02|Engine valve train system
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    US2044522A|1936-06-16|Internal combustion engine
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    US4187810A|1980-02-12|Poppet valve stroke adjusting device for, and combination with, an internal combustion valve in head engine
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    US2229709A|1941-01-28|Two cycle engine
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    SU1384810A1|1988-03-30|Intake valve drive of internal combustion engine
    SU1493801A1|1989-07-15|Actuator of i.c. engine valves
    同族专利:
    公开号 | 公开日
    FR2428144A1|1980-01-04|
    GB2027486B|1982-10-13|
    SE7905018L|1979-12-10|
    DE2825316A1|1979-12-20|
    IN151054B|1983-02-19|
    US4231543A|1980-11-04|
    GB2027486A|1980-02-20|
    DD144289A1|1980-10-08|
    IT1120790B|1986-03-26|
    SE433100B|1984-05-07|
    HU180498B|1983-03-28|
    FR2428144B1|1984-06-29|
    JPS551492A|1980-01-08|
    IT7923337D0|1979-06-07|
    引用文献:
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    US1690032A|1927-04-25|1928-10-30|Noble|Hydraulic valve gear|
    DE467440C|1927-05-08|1928-10-25|Waggon Und Maschb Akt Ges Goer|Pressure fluid control for valves of internal combustion engines|
    US2329662A|1941-11-12|1943-09-14|Wright Aeronautical Corp|Hydraulic valve gear|
    US2443312A|1944-03-06|1948-06-15|Hpm Dev Corp|Pressure cylinder|
    US2494183A|1946-07-06|1950-01-10|John W Lincoln|Control system for hydraulically actuated valves and the like|
    US2602434A|1947-03-29|1952-07-08|Worthington Pump & Mach Corp|Hydraulic valve operating mechanism operable to vary valve lift and valve timing|
    US2615438A|1948-08-04|1952-10-28|Preston T Tucker|Hydraulic mechanism for actuating valves|
    US2785667A|1953-11-18|1957-03-19|Nordberg Manufacturing Co|Hydraulic mechanism for actuating an engine valve with variable timing|
    US3139077A|1963-03-19|1964-06-30|Robert A Beucher|Valve operating mechanism|
    US3369460A|1966-04-15|1968-02-20|Caterpillar Tractor Co|Hydromechanical lost motion servo valve|
    GB1224168A|1967-07-21|1971-03-03|Bryce Berger Ltd|Hydraulic actuating systems for internal combustion engine poppet valves|
    US3872844A|1973-11-12|1975-03-25|Cooper Ind Inc|Fuel injection control system|
    DE2448311B2|1974-10-10|1978-03-23|Maschinenfabrik Augsburg-Nuernberg Ag, 8500 Nuernberg|Adjustable hydraulic valve control for reciprocating piston engines or machines|US4716863A|1985-11-15|1988-01-05|Pruzan Daniel A|Internal combustion engine valve actuation system|
    GB8614310D0|1986-06-12|1986-07-16|South Western Ind Res|Variable actuator|
    US4724801A|1987-01-15|1988-02-16|Olin Corporation|Hydraulic valve-operating system for internal combustion engines|
    SU1621816A3|1987-02-10|1991-01-15|Интератом Гмбх |Hydraulic device for controlling valves of i.c.engine|
    US5002022A|1989-08-30|1991-03-26|Cummins Engine Company, Inc.|Valve control system with a variable timing hydraulic link|
    DE3939002A1|1989-11-25|1991-05-29|Bosch Gmbh Robert|HYDRAULIC VALVE CONTROL DEVICE FOR A MULTI-CYLINDER INTERNAL COMBUSTION ENGINE|
    DE3939066A1|1989-11-25|1991-05-29|Bosch Gmbh Robert|ELECTROHYDRAULIC VALVE CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINES|
    DE3939934A1|1989-12-02|1991-06-06|Man Nutzfahrzeuge Ag|VALVE CONTROL FOR GAS EXCHANGE VALVES OF INTERNAL COMBUSTION ENGINES|
    DE4221097A1|1992-06-26|1994-01-05|Rexroth Mannesmann Gmbh|Valve control for IC engine - has cam follower with adjustable length to ensure constant valve opening stroke.|
    DE19543080C2|1995-11-18|1999-10-28|Man B & W Diesel Ag|Device for controlling valves of an internal combustion engine, in particular the gas supply valve of a gas engine|
    FI101998B1|1996-01-26|1998-09-30|Taimo Tapio Stenman|Arrangement for controlling the functioning of the valves in an internal combustion engine|
    US5857438A|1997-03-18|1999-01-12|Barnard; Daniel Wayne|Hydraulically operated variable valve control mechanism|
    DK0909883T3|1997-10-14|2003-01-06|Waertsilae Schweiz Ag|Device and method for valve control of a reversible diesel combustion engine|
    WO1999027235A1|1997-11-21|1999-06-03|Diesel Engine Retarders, Inc.|Method and system start-up apparatus for removing air and debris from a valve actuation system|
    DE19756018A1|1997-12-17|1999-06-24|Porsche Ag|Device for pressurizing and / or lubricating a hydraulic consumer in an internal combustion engine|
    HU221875B1|2000-06-13|2003-02-28|Attila Püski|Valve-actuating gear for an internal combustion engine|
    DE10220692A1|2002-05-10|2003-11-20|Hydraulik Ring Gmbh|Valve stroke control for internal combustion engines of motor vehicles|
    FI117348B|2004-02-24|2006-09-15|Taimo Tapio Stenman|Hydraulic device arrangement for controlling the operation of internal combustion engine valves|
    DE102006008676A1|2006-02-24|2007-08-30|Schaeffler Kg|Cylinder head for internal combustion engine of vehicle, has filling device for initial filling of pressure discharge chamber and/or pressure chamber with hydraulic medium, where device is formed at housing|
    DE102006015720A1|2006-04-04|2007-10-11|Robert Bosch Gmbh|valve control|
    DE102011054933A1|2011-10-28|2013-05-02|Dspace Digital Signal Processing And Control Engineering Gmbh|Method for detecting a rotation angle|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE19782825316|DE2825316A1|1978-06-09|1978-06-09|ADJUSTABLE HYDRAULIC VALVE CONTROL FOR PISTON POWER OR MACHINERY MACHINES|
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