• 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:
    Summary The present invention relates to a fuel system for an internal combustion engine (1). The fuel system comprises a fuel tank (2), a fuel line (3) for directing fuel from the fuel tank (2) to the internal combustion engine (1), a filter housing (5, 7) comprising a demountable filter insert (5a, 7a) which is adapted to filter fuel the fuel line (3) and a return line (11) which is a stretch between an inlet (1a ', 1 1a2) in the filter housing (5, 7) and an outlet (1lb) in the fuel tank (2). The inlet of the return line (1 1ai, 11a2) is located at a higher level than an upper part of the fuel tank (2). The return line (11) is adapted to return the remaining fuel in the filter housing (5, 7) to the fuel tank (2) at the point where the filter insert (5a, 7a) is deionized. The return line (11) comprises a venting device (12) which is adapted to discharge out of the return line (11).
    公开号:SE1350661A1
    申请号:SE1350661
    申请日:2013-05-30
    公开日:2014-12-01
    发明作者:Anders Jonsson
    申请人:Scania Cv Ab；
    IPC主号:
    专利说明:

    58720EN kg / Applicant: Scania CV AB FIELD SYSTEM BACKGROUND OF THE INVENTION AND KNOWLEDGE TECHNOLOGY The present invention relates to an industry system according to the preamble of claim 1.
    The industry procured at filling stations for the operation of internal combustion engines is not completely clean, but it essentially always contains a small amount of pollutants in the form of water, sand, dates and other types of particles. Systems for supplying brusle to an internal combustion engine include at least one fuel filter to filter out contaminants from the fuel to prevent damage to any components of the fuel system. In internal combustion engines equipped with high pressure injection of the fuel, it is extra important to provide good filtering of the fuel to, for example, protect a high pressure pump and injection means from contaminants. The industry, which is usually diesel oil, is usually filtered in two stages before being injected at high pressure into the combustion chambers of a diesel engine from an accumulator tank (Common Rail). To filter the industry, a first filter housing is usually used with a first filter insert which is arranged upstream of a feed pump which sucks fuel from an fuel tank. The task of the first filter insert is to coarsely filter the industry from coarser particles so that they do not damage the feed pump. Water is separated from the industry in the first filter housing. A second filter housing Threaded a second filter insert is arranged downstream of the feed pump to filter out finer particles in the industry so that they do not reach and damage the high pressure pump and the injectors.
    Tilt inserts should be changed frequently and hoisted at each service case, as the industry over time will have to respond to the filter inserts as they are successively dropped again. In the case where a filter insert lifts out of a filter film, an opening is exposed to a return line at a bottom portion of the filter housing. The remaining fuel in the filter housing flows clamed back to the fuel tank via the return line. However, this branching of the 2 branches in the filter housing does not always work and in such cases the branch remains in the filter housing when a new filter insert is applied. At least part of the remaining industry in the filter housing is unfiltered. If the drainage does not work satisfactorily, there is a risk that the unfiltered fuel is passed on in the fuel system and damages sensitive components such as those arranged downstream of the filter housing in the industry line during a subsequent start of the internal combustion engine.
    SUMMARY OF THE INVENTION The object of the present invention is to provide a fuel system with the risk that a filter housing will not be emptied when a filter insert is lifted out of the filter housing is substantially eliminated.
    This object is achieved by the fuel system of the kind mentioned in the introduction, which is characterized by the features stated in the characterizing part of claim 1. When a filter insert is lifted out of a filter housing, an inlet opening to a return line is exposed. Since the inlet opening of the return line is located at a higher level than an upper part of the fuel tank, the remaining fuel in the filter housing normally flows back to the fuel tank, via the return line, in the event that the filter insert is lifted out. However, it has been established that the filter housing is not always emptied of fuel when the filter insert is lifted out and all the reason for this is that air accumulates in the return line and stops the fuel flow. In order for an industry flood to be obtained in the return line, the industry in the return line must be able to flow into the industry tank. A prerequisite for this is the presence of a continuous industry pillar in the return line in connection with the industry tank, which has an upper spirit which is coated on. a higher level of fuel level in the fuel tank. In the case of air accumulations in the return line, such an industry column is not always obtained. In particular, that is the case then. the industry level in the industry tank is high. This problem is honestly remedied by the invention by arranging a venting device in the return line. With an appropriately placed venting device, any accumulations of air that obstruct the flow of fuel in the return line can be eliminated in a simple and efficient manner. As a result, an industry column can essentially always be created in the return line in connection with the industry tank, which has the capacity to create an industry flood in the return line that eliminates the remaining industry in the filter housing when the filter insert is removed. The risk of unfiltered fuel being passed on in the industry management and causing damage to sensitive grain components during an operation is thus substantially eliminated. According to an embodiment of the present invention, the venting device is arranged inside the fuel tank. If an air accumulation is created inside the return line at the level of the industry surface in the industry tank, the industry flow in the return line ceases. The air accumulation that prevents the fuel flow in the return line is thus beldget inside the fuel tank. In order to eliminate this accumulation of air, the venting device must thus be arranged inside the fuel tank. Alternatively, a venting device can be arranged in the return line in a position upstream of the fuel tank. In this case, the air in the return line can be eliminated for preventive purposes before it is sucked down and accumulates in the return line inside the fuel tank.
    According to an embodiment of the present invention, the venting device is arranged inside the fuel tank at a higher height than the level of the fuel in the fuel tank as it is filled with brat / sic to 80%. The problem of stoppages in the return line usually only arises when the fuel tank is full or substantially full. The return line usually has a vertical stretch down into the industry tank. Since air is lighter than fuel, any air accumulates in an upper part of the vertical line of the return line inside the tank. Such air accumulations cause stops in the return line as they are located at the level of the industry level in the tank. Stops in the return line cause clamed essentially only when the fuel tank is full or substantially full. Against this background, it is advisable to arrange the venting device in the return line in a position in the fuel tank so that the air return line can be relaxed above or just below the industry level when the fuel tank is full or almost full.
    According to an embodiment of the present invention, the venting device has a design such that it prevents air from being led into the return line. For many reasons, the return line does not contain air. Dot at Erni- important that air is not sucked into the return line via the deaeration device. The deaeration device can be adapted to release air from the return line at the supply line as it exerts a predetermined pressure in the return line. This pressure can be an overpressure that is related to the air pressure inside the industry tank. The air pressure in the fuel tank usually corresponds to the ambient air pressure as the fuel tank usually has a tank cap with a valve that lets air into the tank as the fuel in the tank is consumed.
    According to an embodiment of the present invention, the venting device comprises a tube having a first spirit connected to the return line and a second free spirit.
    With such a rudder, a vent passage can be established between a lamp position in the return line and a lamp position inside the fuel tank. The venting device may comprise a pipe having a curved shape such that it comprises a local minimum portion, which is located at a lower elevation than the spirits of the pipe, and that the local minimum portion is adapted to contain fuel. When a filter insert is lifted out of the filter housing, an fuel flow is obtained in the return line. When the fuel flow In the return line reaches the deaeration device, a small amount of the fuel is led into the pipe. This large amount of fuel creates a water gap in the local minimum section that prevents tuft from penetrating into the return line. When the fuel flow is stopped In the return line, the exhaled air in the return line is pressurized by fuel that is coated upstream of the air collection. The accumulated air thus obtains an overpressure in relation to the air in the fuel tank. This pressure difference results in the accumulated air in the return line being led out to the air in the fuel tank via the local minimum batch that contains fuel.
    According to an embodiment of the present invention, the venting device comprises a one-way valve which is arranged in the pipe. The one-way valve may comprise a valve body which is pressed against a valve seat with a resilient cap. The valve body can then only be opened in one direction and against the action of said spring force. The one-way valve prevents the dam down that ambient air in the fuel tank is led into the return line at the same time. One-way valves also make it possible for accumulations of tuft that can be overpressured to leave the return line. Namnda rors fri ande at med advantage belagen på en høgra niva an rorets forste ande. Thus, air from the return line can essentially always be led out above the industry surface in the industry tank. However, it is possible to leak anchored tuft in the return line to a position just below the industry level in the tank. In this case, accumulated air in the return line can be received in a position SOITI is located below the industry surface in the industry tank and released in a position above the industry surface in the industry tank.
    According to an embodiment of the present invention, the return line has an outlet which is located at a lower elevation of the surface of the branch where the fuel tank is filled with fuel to 10%. To prevent air from entering the return line via the outlet opening, it must be covered below the surface of the fuel in the tank. The return line should therefore have a connection to a bottom surface of the industry tank. One consequence of this is that the return line starts at a start deep in the fuel tank when the fuel tank is completely filled. Darned creates a relatively large pressure at the return line outlet which must be overcome if the industry can be led out of the return line. In this case, there is an obvious risk that any air accumulations in the return line will stop the flow of fuel.
    According to an embodiment of the present invention, the return line is adapted to return residual fuel in a filter housing with a filter insert which filters fuel in a branch line which comprises a high-pressure pump and an accumulator tank. In fuel systems where the fuel is compressed to very high pressure in an accumulator tank (Common Rail), it is extra important that the fuel does not contain particles or water, given that it can damage sensitive components such as high-pressure pumps and injectors. Said filter housing may contain a filter insert which is adapted to coarsely filter the fuel during operation before it is led to a feed pump which sucks the fuel from the fuel tank. The fuel injection system of the above naninda kind is usually tvd. fuel filter, namely a coarse filter that filters the fuel before it is led to a fuel pump and a fine filter that filters out smaller particles in the fuel before it is pressurized in a high-pressure pump. Since some of the fuel in the filter housing with the coarse filter is completely unfiltered, it is extra important that all fuel in this filter housing is eliminated via the return line before an escape filter insert is applied in the filter housing. However, the return line can advantageously return fuel from both filter housings. If the filter inserts in both filter housings are replaced at the same time and they are drained by a common return line, it is extra important that the drainage of the industry in the return line works because completely unfiltered industry can otherwise be led past the filter housings if the fuel flow in the return line is stopped.
    BRIEF DESCRIPTION OF THE DRAWINGS In the following, as examples, preferred embodiments of the invention are described with reference to the accompanying drawings, in which: Fig. 1 shows a fuel system with a venting device according to the present invention.
    Fig. 2 shows a first embodiment of the deaeration device and Fig. 3 shows a second embodiment of the deaeration device.
    DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS OF THE INVENTION Fig. 1 shows a fuel system for an internal combustion engine in the form of a schematically indicated diesel engine 1. The fuel injection system and the diesel engine 1 are advantageously mounted in a heavy vehicle. The fuel system that in this case a so-called Common Rail system 6 and comprises a fuel tank 2 with a fuel line 3 for guiding diesel oil from the fuel tank 2 to the cylinders of the diesel engine 1. The fuel line 3 comprises a first line portion 3a which leads diesel oil from the fuel tank 2 to a first filter housing 5. The first line portion comprises a hand pump 4. A feed pump 6 is arranged in the fuel line 3 for sucking diesel oil from the fuel tank 2 to a first filter housing via the first management section 3a. In the filter housing 5, the diesel oil is coarsely filtered with the aid of a schematically shown first filter insert 5a. Any water present in the diesel oil is separated from the hat. The first filter housing 5 comprises an openable lid 5b which is opened in the event that the filter insert 5a is to be replaced.
    The g-coarse-filtered diesel oil is led, via a second line section 3b, to feed pump 6. After coarse filtration, the diesel oil is so free from contaminants that the feed pump 6 cannot be damaged. The diesel oil is then led, via a third line portion 3c, to a second filter housing 7. In the second filter housing 7, the diesel oil is finely filtered by means of a schematically shown second filter insert 7a. The second filter housing 7 comprises an openable lid 7b which is opened in the event that the filter insert 7a is to be replaced. The finely filtered diesel oil is led from the second filter housing 7, via a fourth line section 3d, to a high-pressure pump 8. The diesel oil is now completely free of contaminants that can damage the high-pressure pump 8 and other components in the industry system. The high-pressure pump 8 is adapted to pressurize the diesel oil so that it is fed with a very high pressure into an accumulator tank 9 in the form of a so-called Common Rail. The high pressure in the accumulator tank 9 constitutes a driving cold to enable the injection of the diesel oil with a high pressure into the respective engines of the diesel engine. The diesel oil is injected into the cylinders of the diesel engine 1 by means of injection means 10. A return line 11 extending between an inlet opening in the first filter housing 5 and the fuel tank 2 to allow towering of residual diesel oil in the first filter housing 5 during repair work and replacement of the filter insert 5a the filter housing 5. The return line 11 also comprises an inlet opening 11 a2 which enables emptying of remaining diesel oil in the second filter housing 7 during repair work and replacement of the filter insert 7a in the filter housing 7. The return line 11 is also connected to a line portion for returning residual diesel oil. has not been injected by the injection means 10 into the internal combustion engine 1. The return line 11 has an outlet opening 11b which is bellows at a bottom portion of the fuel tank 2. The return line 11 is provided with venting device 12 in a position inside the fuel tank 2.
    In order for the filter inserts 5a, 7a to be able to maintain a good function, they should be replaced relatively frequently. When the filter inserts 5a, 7a are to be replaced, the respective lids 5b, 7 7b are opened, after which the filter inserts 5a, 7a can be lifted out. As the filter inserts 5a, 7a are lifted from the lower support surfaces in the respective filter housings 5, 7, the inlet openings llai, 1a of the return line are exposed in the respective filter housings 5, 7. Since the inlet openings 11a, 11a2 of the return line are located at a higher level than the fuel tank 2, the remaining fuel in the filter housings 5, 7 normally flows back to the fuel tank 2 via the return line 11 when the inlet openings 11a2, 11a2 are exposed. New filter inserts 5a, 7a are applied in the respective filter housings 5, 7, after which the lids 5b, 7b are put in place. It is thus relatively easy to replace the filter inserts 5a, 7a in the filter housings 5, 7. In some cases, accumulations of air can form inside the return line 11. Such air accumulations can stop the flow of remaining diesel oil from the respective filter housings 5, 7 when the filter inserts are lifted out. . At least some of the diesel oil in the filter housings is unfiltered. If unfiltered diesel oil is not diverted from the filter housings 5, 7 in connection with a replacement of filter inserts 5a, 7a, particles and contaminants in the industry can be passed on in the industry management 3, at a subsequent start, causing damage to sensitive components such as the high pressure pump 8 and injectors 10. .
    The outlet opening 1 lb of the return line 11 is located at a height level h1 near a bottom surface in the fuel tank 2. In this case, the outlet opening ilb is essentially always coated at a lower level than the fuel level hb in the fuel tank 2. If the outlet opening lib is arranged above the fuel tank level 2 The fuel line 3 is emptied of diesel oil, which results in it becoming black to start the internal combustion engine I. Since the fuel tank 2 is essentially full, the outlet opening llb is located relatively far below the fuel surface hb in the fuel tank 2. In this case a relatively large pressure is created at the outlet port 11b. This is usually not a problem because the fuel column in the return line 11 is normally sufficiently high to push the fuel out of the fuel tank 2. However, air can accumulate inside the return line 11. There is thus a risk that a continuous industry column in the return line 11 adjacent to the outlet opening llb does not become higher than the fuel level in the tank 2. If it is said that the fuel flow in the return line 11 is stopped and the remaining diesel oil is found in the filter housings 5, 7, it is not drained away.
    With the aid of the venting device 12, which is thus covered inside the fuel tank 2, a venting of the return line 11 takes place. The venting device 12 is arranged on a Wdniva h2. There, accumulations of air at this height level h2 in the return line 11 can be led out from the return line 11. Thus, a coherent fuel column can essentially always be created in the return line 11 which had the capacity to create a surface in the return line 11 so that the filter housings 5, 7 are empty of diesel oil. The risk of unfiltered diesel 8 being passed on to industry management 3 and causing damage to sensitive components at a subsequent start-up is eliminated.
    Fig. 2 shows an outlet form of the venting device 12. In this case, the venting device 12 comprises a tube 12a with a first end 12ai which is connected to the return line 11 and a second free spirit 12a2. The ridge 12a has a curved shape so that it comprises a local minimum portion 12a3 which is located at a lower height level than the spirits 12a1, 12a2 of the tube. The local minimum portion 12a3 is adapted to contain fuel. The first spirit of the rudder 12a1 is coated at a high level. h2. The free spirit 12a2 of the tube is beldgen at a higher elevation than elevation2. In the event that the vehicle is refueled and the fuel tank 2 is filled up to a maximum level, the pipe 12 is filled with fuel. Even in the case where diesel oil is led through the return line 11, a certain amount of diesel oil is led into the rudder 12. The rudder 12 is thus automatically filled with diesel oil. Since diesel oil has a higher density of air, it accumulates in the minimum portion 12a3. The diesel oil in the minimum portion 12a3 creates a water sludge.
    Since the pressure in the return line 11 is essentially never lower than ambient pressure, the liquid laser prevents ambient air from penetrating into the return line 11 via the vent device 12. If air accumulates locally in the return line 11 and stops the river return line 11, supply the diesel oil upstream in the return line 11. a pressure on the air collection. Thus, the air accumulation shows a higher pressure than the air in the fuel tank 2, which is thus the pressure of the release. This overpressure results in the accumulated air being able to pass past the liquid sludge in the minimum portion 12a3 and out via the free spirit 12a2 of the rudder. This eliminates the accumulated putty in the return line 11.1 and with it can in most cases create a sufficiently high continuous fuel column in the return line 11 which has the capacity to push out diesel oil from the return line 11 in the fuel tank 2.
    Fig. 3 shows an alternative embodiment of the venting device 12. In this case, the venting device comprises a tube 12b having a first end 12b1 which is connected to the return line 11 on a height level h2 and a second free spirit 12b2. Raret 12b has a crooked shape so that the free spirit 12b is located at a higher elevation than the first linden 12b1. The rudder 12 contains a one-way valve 12e. The one-way valve 12c is dimensioned so that it opens at a predetermined pressure in the return line 11. However, the one-way valve 12c prevents air from entering the return line 11, via the pipe I 2b, if the pressure in the fuel tank 12 adjacent to the free wind 12b2 would be higher than inside the return line 11 in connection with the first spirit 12b1 of the rudder. The invention is in no way limited to the embodiments described in the drawings but can be varied freely within the scope of the claims.
    权利要求:
    Claims (12)
    [1]
    A fuel system for an internal combustion engine (1), the fuel system comprising a fuel tank (2), a fuel line (3) for directing fuel from the fuel tank (2) to the internal combustion engine (1), a filter housing (5, 7) comprising a detachable filter insert (5a, 7a) adapted to filter the fuel in the fuel line (3) and a return line (11) having an inlet (11a1, 11a2) in the filter housing (5, 7) and an outlet (1lb) in the fuel tank (2), the inlet of the return line (11ai, 11a2) being beldget ph a higher level than a lower part of the fuel tank (2) and the return line (11) being adapted to return remaining fuel in the filter housing (5, 7) to the fuel tank ( 2) in the event that the filter insert (5a, 7a) is dismantled, characterized in that the return line (11) comprises a deaeration device (12) which is adapted to discharge air from the return line (11).
    [2]
    Fuel system according to claim I, characterized in that the venting device (12) is arranged inside the fuel tank (2).
    [3]
    Fuel system according to claim 2, in that the venting device (12) is arranged inside the fuel tank (2) ph a higher elevation level (h2) than the level of the brat ice (hb) in the fuel tank when it is filled with fuel to 80%.
    [4]
    Fuel system according to one of the preceding claims, characterized in that the venting device (12) is designed so that it prevents air from being led into the return line (11).
    [5]
    Fuel system according to one of the preceding claims, characterized in that the venting device (12) is adapted to open and release any air in the return line (11) in the event that a predetermined pressure rides in the return line (11).
    [6]
    Fuel system according to any one of the preceding claims, characterized in that the venting device comprises a pipe (12a, 12b) connected to a first spirit (12a, 12b1) which is connected to the return line (11) and a second free spirit (12a2). , 121) 2).
    [7]
    Fuel system according to claim 6, characterized in that the venting device comprises a pipe (12a) which has a strong shape such that it comprises a local minimum portion (12a3), which is a lower height level of the spirit of the lining (12a1,12a2). ) and that the local mini-party (12a3) is adapted to contain fuel. 11
    [8]
    Drainage system according to claim 6, characterized in that the venting device comprises a one-way valve (12c) which is arranged in the pipe (12b).
    [9]
    Fuel system according to any one of claims 6-8, characterized in that the free spirit of said tube (12a2, 12b2) is located at a higher level than the first spirit of the tube (12a1, 12b1).
    [10]
    Industry system according to one of the preceding claims, characterized in that the return line (11) has an outlet (1 lb) which is located at a lower height level (hi) of the surface of the fuel (hb) when the fuel tank (2) is filled with fuel to 10 %.
    [11]
    Fuel system according to any one of the preceding claims, characterized in that the return line (11) is adapted to return remaining fuel in a filter housing (5, 7) with a filter insert (5a, 7a) which filters fuel in an industry line (3) which comprises a high pressure pump (8) and an accumulator tank (9).
    [12]
    Fuel system according to claim 11, characterized in that the filter filter housing (5) comprises a filter insert (5a) adapted to coarsely filter the fuel during operation before it is led to a feed pump (6) in the fuel line (3) which sucks the fuel from the fuel tank (2). ). 1/2
    类似技术:
    公开号 | 公开日 | 专利标题
    US6029633A|2000-02-29|Passive fuel delivery module and suspension mechanism
    US8673138B2|2014-03-18|Fuel filter
    EP1653075B1|2011-11-16|Automatic water drain for suction fuel water separators
    KR102042293B1|2019-11-07|Filtration system for providing clean fuel
    JP5080565B2|2012-11-21|Method and apparatus for separating and deriving water contained in liquid fuel, particularly water from diesel fuel
    SK3042004A3|2005-03-04|Apparatus for separated water discharging from the fuel filter
    EP1851425B1|2016-04-27|Motor vehicle
    JP5367821B2|2013-12-11|Improved fuel pressure regulator system and improved fuel pressure regulator for use in the system
    US20070114160A1|2007-05-24|Fuel filter of an internal combustion engine
    SE1350661A1|2014-12-01|Fuel
    US20160059161A1|2016-03-03|Water Separation System
    EP2067514A2|2009-06-10|Fuel system and fuel filter assembly
    JP2003336559A|2003-11-28|Diesel filter
    JP2007198311A|2007-08-09|Oil recovery device for internal combustion engine
    KR100916184B1|2009-09-08|Gas feeding apparatus for a vehicle mounted with a fuel filter positioned outside a fuel pump
    EP1538330B1|2010-09-08|Self air-bleeding fuel supply system for a diesel engine with gravity primed fuel feed pump
    US20160201622A1|2016-07-14|Fuel supply system
    JP4410384B2|2010-02-03|Fuel pump module
    AU2015342717B2|2021-01-28|Bypass filter method and device
    CN101718240A|2010-06-02|Vehicle fuel supplying apparatus
    WO2016170716A1|2016-10-27|Fuel filter
    EP2039896A2|2009-03-25|Device for separating oil out of an air flow
    US20200277921A1|2020-09-03|Return tube of a fuel filter assembly of a fuel system
    KR20180121612A|2018-11-07|Fuel tank
    US9573083B2|2017-02-21|Fuel filter
    同族专利:
    公开号 | 公开日
    WO2014193292A1|2014-12-04|
    SE537126C2|2015-02-03|
    DE112014002269T5|2016-02-18|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US5730106A|1995-09-27|1998-03-24|Gonzalez; Jose M.|Fuel/vapor separator apparatus for diesel engines|
    US6289879B1|1999-11-24|2001-09-18|Parker-Hannifin Corp.|Air eliminating return fuel recirculation valve|
    DE102004046574A1|2004-09-24|2006-03-30|Mann + Hummel Gmbh|Gas removal system for fuel filter in fuel tank of road vehicle has turbine pump drawing off liquid fuel and vapor from space above filter and returning it to liquid in tank|
    DE202005002955U1|2005-02-23|2006-07-06|Hengst Gmbh & Co.Kg|Filter insert for liquid filters, e.g. oil filters for car engines, has a drainage channel sealed by a plug which forms part of a special unit fixed to the insert by clamping or fixing tongues between the folds of the filter|
    US8246840B1|2008-08-15|2012-08-21|Blundy George R|Method and apparatus for changing a diesel engine fuel filter|SE538384C2|2014-07-08|2016-06-07|Scania Cv Ab|Combustion engine fuel system, internal combustion engine with such a fuel system, vehicles with such a fuel system and a method for damping pressure fluctuations of a single fuel filter device in a fuel system|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    SE1350661A|SE537126C2|2013-05-30|2013-05-30|Fuel|SE1350661A| SE537126C2|2013-05-30|2013-05-30|Fuel|
    PCT/SE2014/050603| WO2014193292A1|2013-05-30|2014-05-16|Fuel system|
    DE112014002269.1T| DE112014002269T5|2013-05-30|2014-05-16|Fuel system|
    [返回顶部]