• 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 method and a device for opening a valve (11) which is arranged to communicate with a space (10) with phases of exhaust gas overpressure, in particular a cylinder space of an internal combustion engine, where a ratio piston (60) and an incompressible fl uid are applied via the valve (11) has an opening movement which is independent of an existing normal valve opening movement. The secondary piston (60) of the ratio piston (60) exerts pressure on the compressible fluid when the primary piston (61) of the ratio piston (60) is pressurized via control valves (31, 40) and a control device (80) with gas from the space (10) or second pressure gas source for desired opening periods. of the valve (11) viaratio piston (60).
    公开号:SE1001063A1
    申请号:SE1001063
    申请日:2010-10-31
    公开日:2012-05-01
    发明作者:Goeran Masus；Michael Karlin；Martin Persson
    申请人:Gnutti Powertrain Ab；
    IPC主号:
    专利说明:

    The invention offers an attractive complement to valve-controlled internal combustion engines and can thereby perform a complementary valve control in connection with, for example, engine braking. It can also perform an initial opening at normal valve opening and thereby account for a force addition that enables valve opening at high back pressures.
    The invention has both technical and economic advantages.
    Brief Description of the Drawings In the following, exemplary embodiments of the invention will be described with reference to the accompanying drawings.
    Figure 1 schematically shows a device according to the invention.
    Figure 2 shows the device according to the invention in a section.
    Detailed description of the exemplary embodiment shown in Figs. 1 and 2 schematically shows a space in the form of a cylinder 10 in an internal combustion engine and a valve 11 arranged at the cylinder, which may be an intake valve or an exhaust valve. It will of course be appreciated that the cylinder 10 is in fact provided with at least two valves. The valve 11 is actuated to open by means of an actuating device 12 in the form of, for example, a camshaft with associated push rod 13 and a tiltable lever 14 according to conventional principles or according to other known solutions. For the closing movement of the valve 11, a return spring 15 is provided. The valve 11 has a valve rod 16 and a pressure rod 17 arranged therewith which is actuated by the actuating device 12 during opening movement, which is thus responsible for the normal control of the opening and closing pattern of the valve. It will be appreciated that the actuator 12 may be designed in several different ways.
    According to the invention, a slave piston 20 is arranged annularly around the push rod 17.
    The slave piston 20 is axially slidable along the push rod 17. The push rod 17 has a thickened portion 21 against which the slave piston 20 acts. The return movement of the slave piston 20 is ensured by a return spring 22. From the combustion chamber / cylinder 10 is arranged a channel 30 which runs to a first control valve 31 which in the example shown consists of a so-called ball valve with a spring-actuated ball 32 which normally seals against an annular sealing surface 33.
    From the valve 31 a channel 35 runs to a second control valve 40 as shown in the figures. From the valve 40 a channel 45 extends to a cylinder 50 for a primary piston 61 of a ratio piston 60. From a cylinder 51 for the secondary piston 60 the secondary piston 62 runs a channel 70 to a cylinder 25 for the slave piston 20. The diameter of the primary piston 61 is larger than the secondary piston 62 diameter so that a pressure boost is obtained.
    To ensure the return movement of the ratio piston 60, a return spring 63 is arranged as shown in the ur gures.
    A control device 80 is provided for controlling the valves 31 and 40 so that the desired opening cycles of the invention are obtained with the valve 11. When an opening of the valve 11 is desired, the control device 80 initiates an opening of the valves 31 and 40 so that pressurized gas from the cylinder 10 via the channels 30, 35 and 45 can reach the primary piston 61 of the ratio piston 60 and apply a movement thereto. There is an increase in pressure of an incompressible fluid trapped in the channel 70 and otherwise between the secondary piston 60 of the ratio piston 60 and the slave piston 20, for example hydraulic oil. This means that the slave piston 20 via the thickening 21 applies to the pressure rod 17 and the valve rod 16 a movement opening the valve 11 which is limited in length by an abutment (not shown) or by the working length of the slave piston 20. When the desired opening duration is reached, the control device 80 is re-actuated so that the valve 31 closes the gas flow from the cylinder 10 and the valve 40 assumes a position for releasing return gas via a line / channel 90. The ratio piston 60 will exert a return movement due to pressure relief and return. The slave piston 20 and thus the pressure rod 17 and the valve 11 will also exert a return movement due to pressure relief and return spring action so that the valve 11 is closed. It will be appreciated that the aforementioned opening and closing of the valve 11 is completely independent of normal valve openings and closures and that it also does not interfere with a normal valve opening procedure. Fig. 2 shows a control device 80 shown in more detail where one sees a control rod 95 which acts on a valve ball 32 so that a valve opening is obtained at the same time as the control rod serves as a second control valve. It will be appreciated that the control valve arrangements may be designed in many different ways within the scope of the present inventive concept. The first and second control valves can, for example, be integrated in a single control valve which possesses the required control functions. The control device 80 can of course also be of varying design within the scope of the present inventive idea.
    Fig. 1 has also shown a number of places A for deaeration and a filling place B for the incompressive fluid, which may, for example, be hydraulic oil of suitable quality.
    The device according to the invention thus has several areas of use. One area is, for example, engine braking. Another area is as an assistant valve opener to enable pressure equalization and thereby reduce energy requirements during normal valve opening.
    The device can of course be supplemented with the required position sensors. It is also possible to use an externally arranged pressurized gas source.
    The invention offers a system for engine braking and a servo device for valve opening. It should be understood that the invention can be used with all types of motors and other devices where the above needs exist.
    The invention is not limited to what is shown and described, but changes and modifications are of course possible within the scope of the appended claims.
    权利要求:
    Claims (10)
    [1]
    1. 5
    [2]
    2. Claims
    [3]
    3.. Method for opening a valve (11) which is arranged to communicate with a space (10) with phases of gas overpressure, in particular a cylinder space of an internal combustion engine, characterized in that the valve (60) and an incompressible fluid are applied via the ratio piston (60). 11) an opening movement which is independent of an existing normal valve opening movement.
    [4]
    4.. Method according to claim 1, characterized in that the secondary piston (62) of the ratio piston (60) exerts pressure on the incompressible fluid, and that the primary piston (61) of the ratio piston (60) is pressurized with gas from control valves (31, 40) and a control device (80). the space (10) or other source of pressurized gas for the desired periods of time for opening the valve (11) via the ratio piston (60). Method according to claim 2, characterized in that the control device (80) opens the control valves (31, 40) for gas passage when the ratio piston (60) is to effect opening of the valve (11).
    [5]
    5.. Method according to claim 2 or 3, characterized in that the control device (80) closes the control valves (31, 40) for gas passage when closing the valve (11) is to be performed at the same time as a gas evacuation opening (90) is activated for gas evacuation during a return movement of the ratio piston (60) . Device for opening a valve (11) arranged to communicate with a space (10) with phases of gas overpressure, in particular a cylinder space of an internal combustion engine, the device being arranged to form a complement to a normally occurring valve opening, characterized by that the device comprises a ratio piston (60) with a primary piston (61) and a secondary piston (62), and that the secondary piston (62) is arranged to pressurize an incompressible fluid which acts on a slave piston (20) for valve opening. 6
    [6]
    Device according to claim 5, characterized in that the device comprises a control device (80) and control valves (31, 40) which regulate a gas flow to the primary piston (61) of the ratio piston (60).
    [7]
    Device according to Claim 5 or 6, characterized in that a duct (30) for gas supply is arranged from the space (10) or from an external pressurized gas source, and that the duct (30) via control valves (31, 40) and further ducts (35) , 45) is communicating with the primary piston (61) of the ratio piston (60).
    [8]
    Device according to one of Claims 5 to 7, characterized in that an outlet (90) for return gas is arranged from the primary piston (61) of the ratio piston (60) and is operative when the gas supply is inactive.
    [9]
    Use of a method according to any one of claims 1-4, characterized in that the method is used to provide additional valve opening in addition to normal valve opening of an internal combustion engine and / or as initial aid at the normal valve opening.
    [10]
    Use of a device according to any one of claims 5-8, characterized in that the device is used to provide a supplementary valve opening in addition to the normal valve opening of an internal combustion engine and / or as initial aid at the normal valve opening.
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    同族专利:
    公开号 | 公开日
    WO2012057672A1|2012-05-03|
    SE536251C2|2013-07-16|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    CN104088681A|2014-04-04|2014-10-08|江苏公大动力技术有限公司|Variable driver|DK149391C|1982-03-29|1986-10-27|Man B & W Diesel As|KNOB ACTIVATED DRIVE MECHANISM FOR A HYDRAULIC Piston Pump|
    DE4333493A1|1993-10-01|1995-04-06|Dens Juergen Dipl Ing Dipl Wir|Valve having variable electronic control for thermal power machines|
    AT5399U1|2001-09-25|2002-06-25|Avl List Gmbh|VARIABLE VALVE DRIVE|
    SE531265C2|2006-01-16|2009-02-03|Cargine Engineering Ab|Method and apparatus for driving a valve to the combustion chamber of an internal combustion engine, and an internal combustion engine|
    US8205582B2|2007-03-26|2012-06-26|Illinois Tool Works Inc.|Exhaust check valve and piston return system|
    US20110036315A1|2009-08-12|2011-02-17|International Engine Intellectual Property Company Llc|Valve lift control apparatus|CN104196795B|2014-08-05|2016-06-22|武汉船用机械有限责任公司|Gas-liquid recuperation valve and there is the closed-loop hydraulic system of this gas-liquid recuperation valve|
    CN109209542A|2018-11-21|2019-01-15|潍柴动力股份有限公司|A kind of multi-functional push rod and exhaust braking|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    SE1001063A|SE536251C2|2010-10-31|2010-10-31|Procedure and device for valve control|SE1001063A| SE536251C2|2010-10-31|2010-10-31|Procedure and device for valve control|
    PCT/SE2011/000196| WO2012057672A1|2010-10-31|2011-10-31|Method and arrangement related to valve control and use thereof for opening of valves in a combustion engine|
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