• 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:
    Oil supply system for an internal combustion engine (1), wherein in the internal combustion engine (1) an internal oil pan (2) is arranged, wherein the oil supply system at least one compared to the internal oil pan (2) of the internal combustion engine (1) additional, outside the internal combustion engine arranged external oil reservoir ( 3), wherein a to the internal combustion engine (1) to be connected supply line (4) is provided which leads to a filling opening (5) of the oil reservoir (3) and wherein a with the internal combustion engine (1) to be connected return line (6) by which oil (O) from the oil reservoir (3) to the internal combustion engine (1) is traceable, wherein the return line (6) is connected to the oil reservoir (3) and wherein the oil reservoir (3) at least one oil tank (7) wherein a removal opening (8) of the return line (6) near the bottom or in the bottom of the at least one oil tank (7) is arranged.
    公开号:AT517483A4
    申请号:T50551/2015
    申请日:2015-06-25
    公开日:2017-02-15
    发明作者:Förster Michael；Rangger Alfred
    申请人:Ge Jenbacher Gmbh & Co Og；
    IPC主号:
    专利说明:

    The invention relates to an oil supply system for an internal combustion engine having the features of the preamble of claim 1.
    In known from the prior art oil supply systems for internal combustion engines oil is pumped from an internal oil pan of the engine by an oil pump to the consumers in a pressure circulation lubrication and passes under the influence of gravity back into the internal oil pan of the engine. Furthermore, it is known to increase an oil life by increasing the volume of oil involved in the cycle. For this purpose, for example, the internal oil pan of the internal combustion engine is connected to an additional oil reservoir, for example in the form of oil tanks.
    However, in the operation of available oil supply systems with additional oil tanks, it has been found that oil taken from extraction lines from additional oil tanks has often experienced only a short residence time in the additional oil tank prior to removal.
    Object of the present invention is therefore to provide an oil supply system with which the residence time of the oil is extended in the additional oil reservoir.
    This object is achieved by an oil supply system having the features of claim 1. Advantageous embodiments are specified in the dependent claims.
    By arranging a removal opening of the return line near the bottom or in the bottom of the at least one oil tank, there is better mixing of the oil in the additional oil tank and a longer residence time in the additional oil tank before removal. This ensures that unconsumed (fresh) oil is withdrawn via the return line.
    It is preferably provided that the return line is connected to an extraction line projecting into the vicinity of the bottom of the at least one oil tank, wherein the extraction line has a removal opening near the bottom of the at least one oil tank. This describes the case where the removal of oil from the oil tank takes place through its own extraction line projecting into the oil tank. Alternatively it can be provided that the removal takes place through an opening in the bottom of the oil tank. Because of the accumulation of deposits on the bottom of the oil tank, however, a removal over a projecting to the bottom of the at least one oil tank extraction line is preferable.
    It is preferably provided that the supply line opens near the bottom of the at least one oil tank. This measure causes a favorable flow and mixing of the oil tank, since the originating from the engine oil at high temperature and laden with gas occurs. As a result, it tends to rise in the oil tank. At a mouth of the supply line near the bottom of the at least one oil tank, the rising oil causes a circulation of the oil volume in the oil tank.
    It can be provided that at least one flow-guiding device is provided in the at least one oil tank. By this measure, the flow in the oil tank is further improved. The flow guide may be formed, for example in the form of baffles.
    It is preferably provided that a vent line is provided which connects the oil reservoir with a return line. By this measure, the possibility is created to dissipate the gases dissolved in the oil coming from the internal combustion engine from the oil tank. This measure is important because otherwise it can lead to an increase in the pressure in the oil tank and thus to a partial emptying of the oil tank in the oil pan. The venting can now be done so that a vent line near the lid of the oil tank is connected to a return line. In this case, the gases are introduced together with the recirculated oil for the return line in a crankcase of the internal combustion engine.
    It may be provided that the extraction line near the lid of the oil tank has at least one vent hole. This additional or alternative measure for venting ensures that no gases accumulate in the oil tank, but are discharged via the extraction line from the oil tank.
    It is preferably provided that a preferably spring-loaded check valve is installed in the supply line between the engine and the oil reservoir. By a check valve is prevented that emptied at standstill of the engine oil from oil lines of the engine or oil from the oil pan into the oil reservoir. In general, the internal combustion engine and the outside of the internal combustion engine arranged external oil reservoir are placed on the same structural level.
    It can be provided that at least two oil tanks arranged in series are present, wherein the feed line opens into a first oil tank and the at least two oil tanks are connected via connecting lines. This describes the case in which the external oil reservoir is realized in the form of several, serially arranged oil tanks. Also in the connecting line between individual oil tanks, the measure is realized that the removal opening of the connecting line is near the bottom of the upstream oil tank. The return line to the internal combustion engine is then connected to the at least second oil tank.
    If only one oil tank is provided, the return line is connected to the at least one oil tank.
    The invention is particularly suitable for stationary internal combustion engines, in particular with a generator coupled to a genset internal combustion engines.
    The invention is particularly suitable for applications of high-wear internal combustion engines, such as increased-capacity engines with an unchanged volume of oil, biogas or landfill gas applications, or engines with small internal oil pans due to design.
    The invention has proven to be particularly favorable in connection with the use of steel pistons.
    The invention will be explained in more detail with reference to FIG.
    Fig. 1 shows an embodiment of an oil supply system according to the invention. Evident is an internal combustion engine 1 with an internal oil pan 2. The oil supply system shown has a pressure circulation lubrication 10.
    The pressure circulation lubrication 10 includes in this simplified representation of the oil pan 2, an oil pump 11, a main oil line 14 and an oil filter 12. The oil O is passed through the main oil line 14 to consumers 13 in the internal combustion engine 1.
    In the exemplary embodiment shown, a feed line 4 branches off the main oil line 14 upstream of the oil filter 12 and carries a partial flow of oil O into an external oil reservoir 3, here formed by two oil tanks 7 arranged in series.
    Of course, the oil reservoir 3 can also be formed only by a single oil tank 7.
    The oil level of oil 0 in the two oil tanks 7 is indicated by the hatched area. Preferably, the oil level reaches up to the lid of the oil tank. 7
    From the second oil tank 7 located downstream of the first oil tank 7, the oil O is again supplied to the internal combustion engine 1 via a return line 6.
    In the exemplary embodiment shown, the supply line 4 leads to the first of the two oil tanks 7 arranged in series and opens into a filling opening 5 near the bottom of the oil tank 7.
    A flow guiding device 15, here in the form of a guide plate, can be provided in order to further improve the flow through the oil tank 7.
    In the exemplary embodiment of two oil tanks 7 connected in series, a connecting line 19 exists between the oil tanks 7. A first removal line 9 leads in this case via the connecting line 19 into the downstream oil tank 7. The removal opening 8 of the discharge line 9 opening into the connecting line 19 is located near the bottom of the oil tank 7.
    If only one oil tank 7 is provided, the connection line 19 is omitted and the extraction line 9 is connected directly to the return line 6.
    The removal opening 8 of the extraction line 9 is arranged near the bottom of the or the oil tank 7.
    This causes a favorable mixing of the oil O in the additional oil tank 7 (or the additional oil tank 7) and a prolonged residence time of the oil 0 in the additional oil tank 7 before the re-withdrawal and return to the internal combustion engine 1. Thus, via the removal opening 8 is always fresh Oil O removed from the oil tank 7 and the oil tank 7.
    Not shown here, but it is also conceivable that removal opening 8 is formed as an opening in the bottom of the oil tank 7 there opens into the return line 6.
    The oil O enters the oil tank 7 from the internal combustion engine 1 loaded with gas and at elevated temperature via the supply line 4 and the filling opening 5. The hot oil O rises in the oil tank 7 to the surface. The arrangement of the removal opening 8 near the bottom of the oil tank 7 so on the one hand good mixing of the oil O in the oil tank 7 ensures and on the other hand ensured that not hot, just taken from the engine 1 oil removed and the internal combustion engine 1 is recycled.
    The gas G dissolved in the oil O separates from the oil O in the oil tank 7 and rises to the surface. So that the pressure in the oil tank 7 does not rise, a vent line 16 is provided which directs the gas G to the return line 6. Alternatively, or in addition, it may be provided that the extraction line 9 has a vent hole 17, via which gas G into the return line 6 (or in the case of several oil tanks, first into the connection line 19). can occur.
    The return line 6 opens into the crankcase 20 of the internal combustion engine 1, preferably above the oil level of the oil O in the oil pan. 2
    In general, the internal combustion engine 1 and the outside of the internal combustion engine 1 arranged external oil reservoir 3 are placed on the same structural level. It may be that in the installation of internal combustion engine 1 and oil reservoir 3, an elevation of the oil pan 2 relative to a reference plane in the oil tank 7 results. This can lead to leakage of oil O from oil lines in the internal combustion engine 1 or oil O from the oil pan 2 into the oil tank 7. Leakage of oil lines at a standstill of the internal combustion engine 1, for example, lines between the main oil line 14 and consumers 13, is particularly unfavorable, because a Vorschmiervorgang before starting the internal combustion engine 1 is significantly extended. In a pre-lubricating oil O is brought to consumers 13 before starting the internal combustion engine 1. The pre-lubrication is usually taken over by a Vorschmierpumpe 21, which is designed in terms of performance significantly below the oil pump 11 and this during the
    Vorschmiervorganges bridged. The prelubrication pump 21 provides, for example, 0.8 bar oil pressure.
    A preferably spring-loaded check valve 18 prevents oil 1 from being discharged from oil lines and the oil pan 2 into the oil reservoir 3 when the internal combustion engine 1 is at a standstill. Another particular advantage of a spring-loaded check valve 18 is that it remains closed during the preloading and thus the oil O must be pumped during the Vorschmiervorganges only by the internal combustion engine 1 and not by the entire oil reservoir 3.
    The situation will be illustrated by a numerical example:
    The supply of the external oil reservoir 3 via the supply line 4 with oil O via the main oil line 14. Upstream of the oil filter 12 at a pressure of 3 to 10 bar, wherein a cross-sectional taper of the supply line 4 relative to the main oil line 14 to a cross section of 2.5 mm an oil flow of 6 l / min at an oil pressure of 4.2 bar at the sampling point in the supply line 4 results. The circulation rate of the oil pump 11 is 480 l / min. The temperature of the oil O exiting the oil pan 2 is about 70 ° C. The prelubrication pump 21 provides, for example, 0.8 bar oil pressure. The opening pressure of the check valve 18 is designed for example with 1 bar. Then, the pressure of the prelighting pump 21 is below the opening pressure of the check valve 18.
    The oil reservoir 3 has approximately the same oil volume as the oil pan 2. The oil volume involved in the oil circulation is therefore doubled by the oil reservoir 3.
    LIST OF REFERENCES: 1 internal combustion engine 2 internal oil pan 3 external oil reservoir 4 supply line 5 filling opening 6 return line 7 oil tank 8 removal opening 9 withdrawal line 10 pressure lubrication 11 oil pump 12 oil filter 13 consumers 14 main oil line 15 flow 16 vent line 17 vent hole 18 check valve 19 connecting line 20 crankcase 21 Vorschmierpumpe O oil G gas
    Innsbruck, on June 25, 2015
    权利要求:
    Claims (10)
    [1]
    claims
    1. Oil supply system for an internal combustion engine (1), wherein in the internal combustion engine (1) an internal oil pan (2) is arranged, wherein the oil supply system at least one with respect to the internal oil pan (2) of the internal combustion engine (1) additional, outside the internal combustion engine arranged external Oil reservoir (3), wherein a with the internal combustion engine (1) to be connected supply line (4) is provided, which leads to a filling opening (5) of the oil reservoir (3) and wherein a with the internal combustion engine (1) to be connected to the return line (6 ) is provided, through which oil (O) from the oil reservoir (3) to the internal combustion engine (1) is traceable, wherein the return line (6) is connected to the oil reservoir (3) and wherein the oil reservoir (3) at least one oil tank ( 7), characterized in that a removal opening (8) of the return line (6) near the bottom or in the bottom of the at least one oil tank (7) is arranged.
    [2]
    2. Oil supply system according to claim 1, wherein the return line (6) with a close to the bottom of at least one oil tank (7) projecting extraction line (9) is connected, wherein the extraction line (9) has a removal opening (8) near the bottom of the at least one oil tank (7).
    [3]
    3. Oil supply system according to claim 1 or 2, wherein the supply line (4) opens near the bottom of the at least one oil tank (7).
    [4]
    4. Oil supply system according to at least one of the preceding claims, wherein in at least one oil tank (7) at least one flow guide (15) is provided.
    [5]
    5. Oil supply system according to at least one of the preceding claims, wherein a vent line (16) is provided, which connects the oil reservoir (3) with the return line (6).
    [6]
    6. oil supply system according to at least one of the preceding claims, wherein the extraction line (9) near the lid of the oil tank (7) has at least one vent hole (17).
    [7]
    7. Oil supply system according to at least one of the preceding claims, wherein a preferably spring-loaded check valve (18) in the supply line (4) between the internal combustion engine (1) and the oil reservoir (3) is provided.
    [8]
    8. Oil supply system according to at least one of the preceding claims, wherein at least two serially arranged oil tanks (7) are provided, wherein in a first oil tank (7) the supply line (4) opens and the at least two oil tanks (7) via at least one connecting line (19 ) are connected.
    [9]
    9. oil supply system according to claim 8, wherein the return line (6) with the at least second oil tank (7) is connected.
    [10]
    10. Oil supply system according to at least one of claims 1 to 6, wherein the return line (6) with the at least one oil tank (7) is connected. Innsbruck, on June 25, 2015
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
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    CN203962085U|2014-02-28|2014-11-26|南车玉柴四川发动机股份有限公司|A kind of high-speed chamber diesel generating set lubricating oil tank|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    ATA50551/2015A|AT517483B1|2015-06-25|2015-06-25|Oil supply system for an internal combustion engine|ATA50551/2015A| AT517483B1|2015-06-25|2015-06-25|Oil supply system for an internal combustion engine|
    US15/737,603| US10760459B2|2015-06-25|2016-06-20|Oil supply system for an internal combustion engine|
    PCT/AT2016/050213| WO2016205844A1|2015-06-25|2016-06-20|Oil supply system for an internal combustion engine|
    CN201680037034.5A| CN107709716B|2015-06-25|2016-06-20|Oil supply system for internal combustion engine|
    EP16740930.9A| EP3314100A1|2015-06-25|2016-06-20|Oil supply system for an internal combustion engine|
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