• 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 a device for conveying compressed air for compressed air operated devices in motor vehicles, in particular braking devices in commercial vehicles, both of which is removable via a controllable valve from the combustion chamber of at least one cylinder of an internal combustion engine compressed air. In order to create a structural and flow dynamic device, the valve (11) is arranged outside the combustion chamber (7) and, in particular via a connection channel (10) opening into the combustion chamber (7), is connected to the combustion chamber (7).
    公开号:AT514127A1
    申请号:T266/2013
    申请日:2013-04-09
    公开日:2014-10-15
    发明作者:Gottfried Dipl Ing Raab；Franz Ing Leitenmayr；Heidrun Dipl Ing Klinger
    申请人:MAN Truck & Bus Österreich AG；
    IPC主号:
    专利说明:

    • ·
    * • · · · · · · · · · · · · · · · · · · · MAN Truck & Bus Austria AG; ** ;:: · · · I · · 3.3963 AT 03.04.2013
    description
    Device for conveying compressed air for compressed air-operated devices in motor vehicles 5
    The present invention relates to a device for conveying compressed air for compressed air operated devices in motor vehicles, in particular braking devices in commercial vehicles, according to the preamble of claim 1. Further, the invention relates to a vehicle according to claim 16 and a method according to claim 17. 10
    One way to supply compressed air, for example, the brake system of commercial vehicles is to use the internal combustion engine at defined operating conditions and operating cycles in which usable pressure in the combustion chambers of at least one cylinder, directly or additionally as a compressor. However, it is problematic in that case that removal should take place directly from the combustion chamber, the gas exchange as such may not be adversely affected or the desired design of the combustion chamber design is to be obtained.
    The object of the invention is therefore vorzu-20 beat a device of the generic type, which despite the direct removal of compressed air from the combustion chamber of at least one cylinder of the internal combustion engine does not structurally or gas-dynamically impaired and which is structurally simple feasible.
    The solution of this object is achieved with the features of claim 1. Advantageous developments and refinements of the invention are set forth in the subclaims.
    According to the invention, it is proposed that the compressed air-removing valve is arranged outside the combustion chamber and, in particular via a connection channel opening into the combustion chamber, is connected to the combustion chamber. The proposal allows both a structurally and economically favorable arrangement of the valve, wherein also the combustion chamber design of the at least one cylinder can be maintained almost unchanged. The mouth of the connecting channel can be made relatively free and positioned on a combustion chamber surface. 1/26. * S • · · * · · · · ·
    MAN Truck & Bus Austria AG 3.3963 AT 03.04.2013
    In particular, the valve in the cylinder head of the internal combustion engine can be reset or arranged offset from the cylinder head side combustion chamber surface and / or fluidly connected via the connecting channel with the combustion chamber. The connecting channel may preferably be designed as a bore. 5
    Furthermore, the valve can be aligned substantially parallel to gas exchange valves of the internal combustion engine, in particular if the gas exchange valves and the valve are arranged parallel to the cylinder center axis of the at least one cylinder of the internal combustion engine. This results, inter alia, structural and manufacturing advantages 10 in the production of the cast cylinder head, for example, and its machining.
    The valve is preferably connected to a discharge channel which can be acted upon by compressed air in accordance with the respective valve position, that is to say forms a valve-controlled discharge channel.
    To achieve a structurally favorable and simple derivation of the compressed air to be removed from the combustion chamber, the outflow channel controlled by the valve (for example, bending approximately 90 degrees) may open into a side surface of the cylinder head and be connected there to a pressure line with a check valve.
    In an advantageous embodiment of the invention, the valve can also be controlled mechanically and / or electrically and / or hydraulically and / or pneumatically via an actuating device. In this case, the control may be demand-dependent and / or dependent on defined operating conditions of the internal combustion engine (in particular in the case of an exhaust-free overpressure in the combustion chamber) and / or in coasting or engine braking operation.
    In a first mechanically designed control, the valve may be temporarily opened via a camshaft driven by the engine and an actuator. The actuator may then preferably a valve permanently open holding, for example, electrically, hydraulically and / or pneumatically controlled control are superimposed. 2/26 »*» · · · · · · · 1 •: · · 'Mfä »···· • * • · · · · · ·
    MAN Truck & Bus Austria AG 3.3963 AT 03.04.2013
    The actuating element may preferably be a two-armed rocker arm driven via the camshaft, the arms of which corresponding to the valve and the cam of the camshaft can be acted upon by actuating elements, for example piston-cylinder units as control elements, alternately with pressure medium. Such piston-cylinder units can be actuated, for example, hydraulically and / or pneumatically.
    Alternatively, the actuator for the valve may be a piston-cylinder unit with at least one piston, which acts on the valve biased in the closed position by a valve spring in the opening direction and / or in the closing direction, for example hydraulically or pneumatically acted upon. The at least one piston can be connected alternately, depending on different operating conditions of the internal combustion engine to corresponding pressure medium sources and / or control valves.
    According to a particularly preferred first embodiment, a piston of the piston-cylinder unit is guided displaceably in a cylinder liner, wherein on each side of the piston depending on a pressure chamber is formed. On the valve-facing side of the piston is a, preferably arranged in a spacer sleeve, spring means, preferably a compression spring, most preferably a helical compression spring arranged, which is indirectly or directly supported on the cylinder liner and on the other hand acts on the valve. The biasing force of this spring device is designed so that it is greater or stronger than the biasing of the valve in the closed position of the valve spring. In addition, the biasing force of this spring device is designed so that it is in the compression stroke time before the fuel ignition from a defined combustion chamber pressure disengaged, in particular compressible, and thus the valve can be closed by means of the valve spring. Such a structure can be easily manufactured and pays off especially by a very high reliability.
    According to a particularly preferred embodiment for this purpose may also be provided that the spring device acts on the valve via a Leerwegkappe or via a Leerwegkappe together with assigned valve-side support cup. The Leerwegkappe is preferably mounted displaceably on a connected to the piston control rod and coupled therewith, in such a way that when pressurizing a relation to the valve side lower piston chamber and thereby taking place displacement of the piston away from the valve, the Leerwegkappe is displaced away from the valve and The spring means is thereby disengaged, whereby the valve by the force of the valve spring 3/26 MAN Truck & Bus Österreich AG 3.3963 AT 03.04.2013 • · · v * * *: :: aA2, e: ·· ·· 7ϊ «γ · ··
    • · · ··· ·· # · can be closed. When pressurizing a relative to the valve side upper piston chamber, or at unpressurized upper and lower piston chamber, a displacement of the Leerwegkappe is released by the spring means relative to the actuating rod, whereby the spring means can bias the Leerwegkappe towards valve and thus act on the valve, so that it is opened against the force of the valve spring. When pressurizing the upper piston chamber, the valve is permanently opened during the period of this pressurization. In the case of unpressurized upper and lower piston chambers, by contrast, the valve is only opened until, in the compression stroke of the internal combustion engine, a defined high combustion chamber pressure prevails, before the ignition of the fuel, which closes the valve against the force of the spring device.
    In a further concrete embodiment of the actuating device, the piston-cylinder unit can have two pistons which can be acted upon in opposite directions. Here then, for example, a piston correspondingly acted upon keep the valve in defined operating states of the internal combustion engine, in particular in overrun and / or engine braking operation of the motor vehicle, constantly open and the other piston periodically open the valve depending on defined or defined predefinable operating cycles of the internal combustion engine.
    According to a particularly preferred specific embodiment, a pressure space between the two pistons can be arranged and designed such that the lower piston is displaceable in the direction of the valve when pressure is applied to the pressure chamber, preferably as long as it is displaceable in the direction of the valve until the lower piston comes to a defined stop to the plant. Further, a spring means, preferably a compression spring, most preferably a helical compression spring, supported on the valve-facing side of the lower piston, which acts on the valve, wherein the biasing force of the spring means is greater than that of a biasing the valve in the closed position valve spring. The biasing force of the spring device is also designed so that it is in the compression stroke of the internal combustion engine time before the fuel ignition from a defined combustion chamber pressure disengaged, in particular compressible, and thus the valve can be closed by means of the valve spring. Even with such a structure, an alternative actuator with higher reliability is provided. Specifically, the two pistons can be accommodated and arranged in the piston-cylinder unit in such a way that the spring device does not act in the unpressurised state and the valve is closed by means of the pretensioning force of the valve spring. 4/26 MAN Truck & Bus Österreich AG 3,3963 AT 03.04.2013 •!
    • · · · ·
    The advantages arising in connection with the vehicle and the method have also previously been appreciated in detail in connection with the detailed appreciation of the device according to the invention, so that in this regard reference is made to the statements made above.
    Several embodiments of the invention are explained in more detail below with reference to the attached, schematic drawing. Show it:
    Figure 1 is a longitudinal section through a cylinder of an internal combustion engine with an opening into the combustion chamber connecting channel, by means of which via a controllable valve under positive pressure air for a compressed air operated device in, for example, a commercial vehicle is conveyed.
    Fig. 2 is a force acting on the valve, mechanically-hydraulically designed actuator with a camshaft, a rocker arm and two piston-cylinder units, which are integrated in the rocker arm;
    Fig. 3 is a pneumatically controlled actuator for the valve with a
    Piston-cylinder unit with a piston which can be acted upon by both sides depending on operating conditions of the internal combustion engine, and
    Fig. 4 is an alternative to Fig. 3, hydraulically controllable actuator with two acting on the valve piston.
    FIG. 1 roughly shows schematically a partial cross-section through an internal combustion engine 1 designed, for example, as a four-stroke Hübkoiben engine for, for example, a commercial vehicle as a motor vehicle with a cylinder crankcase 2, a cylinder bore 3 arranged therein, in which a piston 4 is guided and is hinged to a downwardly projecting connecting rod 5, and with a gas-tight placed on the cylinder crankcase 2 cylinder head 6. The internal combustion engine 1 may be in particular a diesel engine with accordingly high compression.
    The cylinder crankcase 2, the reciprocating piston 4 and the cylinder head 6 include a combustion chamber 7, which via gas exchange valves 8 (intake and exhaust valves) and correspond 5/26 ·······
    MAN Truck & Bus Österreich AG 3.3963 AT 03.04.2013 en In the cylinder head 6, ducts 9 are supplied with combustion air or connected to exhaust pipes.
    In the combustion chamber 7 also opens a next to the gas exchange valves 8 positioned Ver-5 binding channel 10 which is controllable via a valve 11 with a valve plate 11a and a valve stem 11b in Durchströrnquerschnitt and in the open state of the valve 11, the connecting channel 10 with a discharge channel 12th , here merely by way of example with a kinkendend by approximately 90 degrees and opening into a side surface 6a of the cylinder head 6 outflow channel 12 connects. 10
    To the outflow channel 12, a pressure line, not shown, is connected to a check valve which is connected, for example, to a reservoir of the compressed air service brake of the utility vehicle. In the exemplary embodiment according to FIG. 1, the gas exchange valves 8 and the valve 11 axially displaceably guided in the cylinder head 6 are arranged, for example, only parallel to the cylinder center axis and parallel to one another. However, the valve 11 could also be offset obliquely or up to 90 degrees to the center axis of the gas exchange valves 8 or inclined to be arranged in the cylinder head 6. 20
    By means of the valve 11 can be derived at fitting in the combustion chamber 7 overpressure air and conveyed via the outflow channel 12 and provided with a check valve pressure line, for example, to the reservoir of the service brake and / or other operated with compressed air devices. 25
    A usable overpressure in the combustion chamber 7 is, for example, in overrun then unbefeuert internal combustion engine 1 or in engine braking at, for example, a closed exhaust valve in the exhaust system of the internal combustion engine 1 or at defined operating cycles of the internal combustion engine 1 (in the compression stroke time before ignition of 30 fuel) before.
    The control of, for example, via a valve spring 13 biased in the closed state valve 11 (Fig. 2), for example, via an actuator 14, which is controlled, for example, mechanically-hydraulically. 6/26 35 MAN Truck & Bus Österreich AG 3.3963 AT 03.04.2013 «·« · · · · «· · · · · · · · · · · · · · · ·« «· ·« · *
    In the example case of FIG. 2, the actuating device 14 has a two-armed rocker arm 16 pivotally mounted in the cylinder head 6 via an axle 15, one arm 16a of which is driven by a cam 17 of a camshaft (not shown), while its opposite arm 16b is mounted on a valve stem 11 b of the valve 11 acts. It should be noted that for the function of the valve 11, a relatively small valve lift of, for example, 1 to 4 mm, preferably 3 mm, may be sufficient.
    In the arm 16a of the rocker arm 16, a piston-cylinder unit 18 is integrated, the piston 18a via a roller tappet 19 with the cam 17 as described below-10 cooperates. Another piston-cylinder unit 20 is arranged in the cylinder head 6, wherein the piston 20a acts on the opposite arm 16b of the rocker arm 16 via a spherically mounted Dfuck piece 21.
    The pressure chamber of the piston-cylinder unit 18 is connected to an indicated only by the reed 22 te-15 pressure oil supply with a control valve, not shown, such that upon pressurization of the rocker arm 16 is effective, via the cam 17 to defined operating cycles of the internal combustion engine Valve 11 is opened periodically. In the depressurized state, the rocker arm 16 is not actuated and the valve 11 remains closed; there is no compressed air removal. 20 via the piston-cylinder unit 20, which is connected to a direction indicated by the Reil 23 pressure oil supply, the valve 11 can be kept constantly open, in particular in coasting or engine braking with closed exhaust flap by appropriate pressurization of the piston-cylinder unit, in In this operating state, the internal combustion engine is not fired and acts as a compressor for the one cylinder 3 or, if appropriate, with a plurality of cylinders, with appropriate compressed air supply as required.
    In Fig. 3 is an alternative to Fig. 2, for example pneumatically controlled Actu-30 supply device 24 dargesteilt, which is formed by a piston-cylinder unit and has a cylinder head 6 arranged on the cylinder liner 24 a, in which a piston 24 b slidably is guided, wherein above and below the piston 24b depending on a pressure chamber 24c, 24d is formed. 7/26 MAN Truck & Bus Österreich AG 3.3963 AT 03.04.2013 • · · «· · > * · · · ≪ • * ·· .. ·· ::: •··········· • ♦ • · ··· ·· «·
    Below the cylinder liner 24a is formed by a separate component or integrally and / or integrally formed with the cylinder liner 24a spacer sleeve 25 is provided in which a helical compression spring 26 is arranged, which is supported on the one hand on the cylinder liner 24a and on the other hand via a Leerwegkappe 27 and a Support cup 28 acts on the valve stem 11 b of the valve 11. The biasing force of the helical compression spring 26 is stronger than that of the valve spring 13, so that in the unpressurized state, the valve 11 is opened defined. The support cup 28 is, as can be seen from the drawing, on a spacer sleeve side stop, which is exemplified here by a stop sleeve 32 (an integral wall-side training in the manner of a diameter jump or stop ring is of course possible). The helical compression spring 26 is also designed so that in the compression stroke time before the ignition of the fuel, the valve 11 closes by the rising combustion chamber pressure.
    The piston 24b of the piston-cylinder unit 24 is further coupled via a led out of the cylinder liner 24a actuator rod 29 with a head 29a to the Leerwegkappe 27, such that starting from the drawn open position of the valve 11 at a pneumatically controlled pressurization (arrow 30) of the piston 24b via the lower pressure chamber 24d the Leerwegkappe 27 (together with the compression coil spring 26) is pulled upwards and thereby the valve 11 is closed by means of the then acting valve spring 13.
    During overrun operation or engine braking operation located above the piston 24b pressure chamber 24c as indicated by the arrow 31, for example, pneumatically pressurized via a control valve, not shown, whereby the piston 24b is adjusted down and the control rod 29 with the head 29a and the support cup 28th the valve 11 keeps constantly open.
    The function of the actuator or piston-cylinder unit 24 is substantially as described above, that is, the valve 11 in the pressureless state spring loaded (helical compression spring 26) is open and can be closed by the combustion chamber pressure Or that the valve 11 by pressurizing the Piston 24b over the pressure chamber 24c is constantly open .. The pneumatic pressure medium source and the required control valves are not shown · 8/26 U .: Sd ·· »· ♦ * · · · · · · · · · · ·
    MAN Truck & Bus Austria AG 3.3963 AT 03.04.2013
    Finally, FIG. 4 shows a further, alternative actuating device or piston-cylinder unit 33, which is described only insofar as it differs substantially from the actuating device 24 according to FIG. 3. Functionally identical parts are provided with the same reference numerals.
    The piston-cylinder unit 33 is hydraulically controllable, for example, and has two pistons 33b, 33c displaceably guided in a cylinder liner 33a. The valve 11 facing the lower piston 33c is designed as an annular piston through which the control rod 29 of the upper piston 33b extends.
    In the basic position (pressure-free state) shown in Figure 4, the valve 11 is closed with the bias of the valve spring 13, because the two pistons 33b, 33c arranged and / or dimensioned so that the helical compression spring (26) has no effect and thus the Ventiifeder 13 acts more or less alone.
    In the case of a hydraulically controlled pressurization of the lower pressure chamber 33d between the two pistons 33b, 33c (arrow 34), the piston 33c is moved downwards until it comes to rest on the cylinder liner side stopper 25a shown here by way of example by a diameter jump the upper piston 33b bears against an annular stop 33e. In this case, via the greater biasing force than the valve spring 13 having helical compression spring 26, the valve 11 is opened. The support sleeve 28 is located to ensure a defined valve lift on a stop 32a, compressed air can be removed from the combustion chamber until the increasing in the compression stroke Brehnraumdruck closes the valve against the force of the helical compression spring 26.
    A constant opening of the valve 11 is achieved when the upper pressure chamber 33f is pressurized (arrow 35), in which case the support cup 28 is subjected to force via the downwardly displaced piston 33b and its actuating rod 29 or its head 29a and thus the valve 11 is constantly opened is (preferably in overrun mode or engine braking operation). The support cup 28 can in turn be supported on the stop 32a. The Leerwegkappe 27 thus serves here differently than in the embodiment of FIG. 3 mainly the leadership of the helical compression spring 26 and may be firmly connected to the support cup 28 and be part of the support cup 28. 9/26 · »· ·: · · · ··· t ···: ::: 1 (/ 12 ·· · · W · 1 # - ··
    MAN Truck & Bus Austria AG 3,3963 AT 03.04.2013
    The pressure control just described by way of example as hydraulic pressure control can be functionally accomplished as described above via control valves (not shown) and corresponding pressure medium sources. 5 The invention is not limited to the illustrated embodiments. In addition to modifications familiar to the person skilled in the art, the valve 11 can also be partially or completely electrically actuated or opened and closed. 10/26 MAN Truck & Bus Österreich AG 3.3963 AT 03.04.2013 • · • · ::: • · · · · · · · · · · · ·······
    REFERENCE LIST 1 Internal combustion engine 2 Cylinder crankcase 3 Cylinder 4 Reciprocating piston 5 Connecting rod 6 Cylinder head 6a Side surface 7 Combustion chamber 8 Gas exchange valve 9 Inlet or outlet channel 10 Connecting channel 11 Valve 11a Valve plate 11b Valve stem 12 Outflow channel 13 Valve spring 14 Actuator 15 Axle 16 Rocker arm 16a Arm 16b Arm 17 Cam 18 Piston Cylinder unit 18a Piston 19 Roller tappet 20 Piston-cylinder unit 20a Piston 21 Pressure piece 22, 23 Pressure supply 24 Actuation device 24a Cylinder sleeve 24b Piston 24c Pressure chamber 11/26 • 9 • 9 • · • 9
    • 9 • * • • 9 9 ·· M · · • · • • 9 • 9999 ··
    MAN Truck & Bus Österreich AG 3.3963 AT 03.04.2013 24d Pressure chamber 25 Spacer sleeve 25a Stop 26 Helical compression spring 27 Empty cap 28 Support cup 29 Steep rod 29a Head 30, 31 Pressure supply 32 Stop sleeve 32a Stop 33 Actuator 33a Cylinder sleeve 33b Piston 33c Piston 33d Pressure chamber 33e Stop 33f Pressure chamber 34, 35 Pressure supply 12/26
    权利要求:
    Claims (18)
    [1]


    vv · w * v W m ww «* MAN Truck & 1. A device for conveying compressed air for compressed air operated devices in motor vehicles, in particular of braking devices in commercial vehicles, in which a controllable valve (11) from the combustion chamber (7) of at least one cylinder (3). an internal combustion engine (1) compressed air can be removed, characterized in that the valve (11) outside the combustion chamber (7) and, in particular via a in the combustion chamber (7) opening out connecting channel (10) to the combustion chamber (7) is connected ,
    [2]
    2. Apparatus according to claim 1, characterized in that the valve (11) in the cylinder head (6) of the internal combustion engine (1) is set back from the cylinder head side combustion chamber surface and / or connected via the Verbindungsungskänal (10) with the combustion chamber (7) is.
    [3]
    3. Apparatus according to claim 2, characterized in that the valve (11) is aligned substantially parallel to gas exchange valves (8) of the internal combustion engine (1).
    [4]
    4. Apparatus according to claim 3, characterized in that the gas exchange valves (8) and the valve (11) are arranged parallel to the cylinder center axis of the at least one cylinder (3) of the internal combustion engine (1).
    [5]
    5. Device according to one of the preceding claims, characterized in that the valve (11) is connected to a via the valve (11) controllable outflow channel (12), wherein it is preferred that via the valve (11) controlled discharge channel (12 ) in a side surface (6a) of the cylinder head (6) opens and is connected there to a, a check valve having pressure line.
    [6]
    6. Device according to one of the preceding claims, characterized in that the valve (11) via an actuating device (14; 24; 33) is controlled, in particular mechanically and / or electrically and / or hydraulically and / or pneumatically controlled. 13/26 • · * · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · • £ / 0 · · · · · · · MAN Truck & Bus Austria AG 3.3963 AT 03.04.2013
    [7]
    7. The device according to claim 6, characterized in that the valve (11) via one of the internal combustion engine (1) driven cam (17) and an actuating element (16) is at least temporarily openable, wherein it is preferably provided that the actuating element (16 ) a valve (11) constantly open holding Steue- 5 (20) is superimposed.
    [8]
    8. The device according to claim 7, characterized in that the Betätigungsseie * ment (16) via the cam (17) driven, two-armed rocker arm, with its valve (11) and the cam (17) corresponding arms (16a, 16b ) over 10 controls, preferably via piston-cylinder units (18, 20) elements as Steuerele, are alternately acted upon.
    [9]
    9. Apparatus according to claim 6, characterized in that the actuating device (24; 33) for the valve (11) is a piston-cylinder unit with at least one piston (24b; 33b, 33c), which controls the one via a Valve spring (13) in the closed position pre-tensioned valve (11) acted upon in the opening direction and / or in the closing direction, in particular hydraulically or pneumatically applied, wherein it is preferably provided that the at least one piston (24b, 33b, 33c) and the alternately, depending of different operating states of the internal combustion engine to at least 20 a pressure medium source (30, 32, 34, 35) and / or control valves can be connected.
    [10]
    10. Apparatus according to claim 9, characterized in that a piston (24b) of the piston-cylinder unit in a cylinder liner (24a) is displaceably guided, wherein on both sides of the piston (24b) each have a pressure chamber (24c, 24d) is formed is, and 30 that on the valve-facing side of the piston (24b), preferably arranged in a spacer sleeve, spring means (26), preferably a compression spring is arranged, which indirectly or directly on the cylinder liner (24a) is supported and on the other hand on the Valve (11) acts, wherein the biasing force of the spring device (26) is designed so that it is stronger than the valve (11) in the closed position biasing force of the valve spring (13) and that in the compression stroke time before the fuel ignition from a defined combustion chamber pressure can be disengaged, in particular compressible, and thus the valve (11) by means of the valve spring (13) is closable. 14/26 35 MAN Truck & Bus Austria AG; ::; ·; ·; ·; · *: 3 5: **::. * 3.3963 AT ............. 03.04.2013
    [11]
    11. The device according to claim 10, characterized in that the spring device (26) via a Leerwegkappe (27) or via a Leerwegkappe (27) with associated valve-side support cup (28) acts on the valve (11), wherein the Leerwegkappe (27) on a piston (24b) connected to the control rod (29) slidably mounted and coupled with this, such that upon pressurization of a lower side relative to the valve side piston chamber (24d) and thereby takes place displacement of the piston (24b) from the valve (11 ), the Leerwegkappe (27) from the valve (11) is displaced away and the spring means (26) is thereby brought out of engagement, whereby the valve (11) by the force of the valve spring (13) closes, and that in a Druekbeaufschlagung one related on the valve side upper Kölbeh-space (24c) or in unpressurized upper and lower piston chamber (24c, 24d) a displacement of the Leerwegkappe (27) by means of the spring means (26) relative to Ste ll rod (29) is released, whereby the spring means (26) biases the Leerwegkappe (27) in the direction of valve (11) and thus acts on the valve (11) and this opens against the force of the valve spring (13).
    [12]
    12. The device according to claim 9, characterized in that the piston-cylinder unit (33) has two oppositely acted upon pistons (33b, 33c), wherein it is preferably provided that the one piston (33b) at a corresponding application of the valve ( 11) in defined operating states of the internal combustion engine, in particular in overrun mode and / or Mötorbremsbetrieb of the motor vehicle, constantly open and the other piston (33c) opens the valve in defined operating conditions of the internal combustion engine (1) periodically.
    [13]
    13. The apparatus according to claim 12, characterized in that a pressure chamber (33d) between the two pistons (33c, 33b) is arranged and formed such that the lower piston (33c) at a pressurization of the pressure chamber (33d) in the direction of valve ( 11) is displaceable until the lower piston (33c) abuts against a stop (25a), that on the valve-facing side of the lower piston (33c) a spring device (26) is supported, which acts on the valve (11), wherein the biasing force of the spring means (26) is greater than that of a valve spring (13) biasing the valve (11) to the closed position, and wherein the biasing force of the spring means (26) is 15/26 ·· '···· «· • ·· ···· MAN Truck & Bus Austria AG 3.3963 AT 03.04.2013 is also designed so that it in the compression stroke of the internal combustion engine before the fuel ignition from a defined combustion chamber pressure disengaged, in particular compressible, and thus the valve (11) by means of the valve spring (13) is closable ,
    [14]
    14. The apparatus according to claim 13, characterized in that the said valve (11) facing under piston (33c) of a with the upper piston (33b) connected to the control rod (29) durehQriffen, wherein the lower piston (33c) and the control rod (29) are displaceable relative to each other, that the two pistons (33b, 33c) at a pressurization of lying between the two pistons (33b, 33c) pressure chamber (33d) are so defined displaced, in particular to stops (25a, 33e) for conditioning can be brought that the spring means (26) acts on the valve (11), and that the upper piston (33b) together with its control rod (29) is designed so that when a pressurization of the upper piston (33b) in the direction of the valve ( 11) towards the actuating rod (29) acts on the valve (11) and this against the force of the valve spring (1 1) opens, especially during the pressurization permanently opens.
    [15]
    15. The device according to claim 13 or claim 14, characterized in that the two pistons (33b, 33c) are received and arranged in the piston-cylinder unit such that the spring device (26) does not act in the unpressurised state and the valve ( 11) is closed by means of the biasing force of the valve spring (13).
    [16]
    16. vehicle, in particular commercial vehicle, with a device according to one of the preceding claims 1 to 15.
    [17]
    17. A method for conveying compressed air for compressed air operated equipment in motor vehicles, in particular by means of a device according to one of the preceding claims 1 to 15.
    [18]
    18. The method according to claim 17, characterized in that the valve (11) by means of an actuating device (14; 24; 33) is controlled so that the valve (11) in overrun operation and / or engine braking operation of the internal combustion engine permanently open 16 /. 26 MAN Truck & Bus Austria AG 3.3963 AT 03.04.2013 and in contrast to other operating conditions, the valve (11) is only opened intermittently and / or periodically. 17/26
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    DE102005040649A1|2007-03-01|Rocker arm-valve drive for gas exchange valve of e.g. multi-cylinder internal combustion engine, has force transmission device designed as swing/rocker arm that is rotatably supported on lever axle with pressurizing medium guiding channel
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    同族专利:
    公开号 | 公开日
    BR102014006898A2|2016-01-05|
    RU2676928C2|2019-01-11|
    US20140299079A1|2014-10-09|
    RU2014113757A|2015-10-20|
    CN104100326A|2014-10-15|
    AT514127B1|2015-02-15|
    US9708943B2|2017-07-18|
    EP2789853A1|2014-10-15|
    CN104100326B|2018-03-20|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE891361C|1940-11-01|1953-09-28|Daimler Benz Ag|Internal combustion engine operating in a two-stroke or four-stroke cycle, especially a diesel engine, with an additional device for drawing compressed air from the working cylinder of the machine|
    GB699182A|1949-06-23|1953-11-04|Orenstein & Koppel Ag|Improvements in internal combustion engines|
    DE19902052A1|1999-01-20|2000-07-27|Daimler Chrysler Ag|Internal combustion engine with compressor to produce compressed air, with oxidation catalytic converter in flow path between compressor and compressed air store|US10927717B2|2017-05-08|2021-02-23|Man Truck & Bus Österreich Gesmbh|Valve train lever|US3958900A|1973-06-11|1976-05-25|Takahiro Ueno|Convertible engine-air compressor apparatus mounted on a vehicle for driving said vehicle|
    SU1502866A1|1987-10-23|1989-08-23|Центральный научно-исследовательский автомобильный и автомоторный институт|Apparatus for exhaust braking of ic-engine|
    DE3906312C1|1989-02-28|1989-12-21|Man Nutzfahrzeuge Ag, 8000 Muenchen, De|
    CN101076655B|2004-10-14|2010-06-30|雅各布斯车辆系统公司|System and method for variable valve actuation in an internal combustion engine|
    EP2055906A1|2007-10-31|2009-05-06|Caterpillar Motoren GmbH & Co. KG|Device and method for controlling valves|DE102017115596A1|2017-07-12|2019-01-17|Man Truck & Bus Ag|Method for starting an internal combustion engine|
    法律状态:
    2022-01-15| PC| Change of the owner|Owner name: MAN TRUCK & BUS SE, DE Effective date: 20211123 |
    优先权:
    申请号 | 申请日 | 专利标题
    ATA266/2013A|AT514127B1|2013-04-09|2013-04-09|Device for conveying compressed air for compressed air operated equipment in motor vehicles|ATA266/2013A| AT514127B1|2013-04-09|2013-04-09|Device for conveying compressed air for compressed air operated equipment in motor vehicles|
    EP14000186.8A| EP2789853A1|2013-04-09|2014-01-18|Device for conveying compressed air for devices in motor vehicles operated by compressed air|
    BR102014006898A| BR102014006898A2|2013-04-09|2014-03-21|device and method for conveying compressed air to equipment operated with compressed air in motor vehicles and vehicles|
    US14/242,113| US9708943B2|2013-04-09|2014-04-01|Device for delivering compressed air for pneumatically operated equipment in motor vehicles|
    RU2014113757A| RU2676928C2|2013-04-09|2014-04-08|Device for supply of compressed air to pneumatic devices in cars|
    CN201410139842.5A| CN104100326B|2013-04-09|2014-04-09|For the device to the pneumatic operation type equipment conveying compressed air in motor vehicles|
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