• 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:
    13SammandraciThe invention relates to a drive arrangement (2) intended for a fuel pump (20) mounted on an internal combustion engine (4), comprising a first gear (24) arranged on a crankshaft (26) of the internal combustion engine (4) and a secondgears (34) mounted on a drive shaft (22) of the fuel pump (20),the first gear (24) and the second gear (34) are arranged in direct engagement with each other. The invention also relates to an internal combustion engine (4) and a vehicle (1) comprising such a drive arrangement (2).(Fig. 3a)
    公开号:SE1351448A1
    申请号:SE1351448
    申请日:2013-12-05
    公开日:2015-06-06
    发明作者:Ola Jönsson；Stefan Fors；Petter Johnson
    申请人:Scania Cv Ab；
    IPC主号:
    专利说明:

    Drive arrangement for a fuel pumpFIELD OF ARTThe present invention relates to a drive arrangement intended forcombustion engine mounted fuel pump, an internal combustion engine with such a drive arrangement and a vehicle with such a drive arrangement.
    BACKGROUND OF THE INVENTION AND KNOWLEDGE TECHNOLOGYInternal combustion engines, such as diesel or otto engines, are used in several types of applications and vehicles today, for example in heavy vehicles, such as trucks or buses, cars, motor boats, ships, ferries or ships. Internal combustion engines are also used in industrial engines and / or motor-driven industrial engines.cures, power plants, such as e.g. electric power plants comprising a diesel generator, andand lok.
    Internal combustion engines can be powered by diesel or petrol, for example. These engines are equipped with an industry system to transport all the industry from oneor several fuel tanks to the internal combustion engine injection system. Bransle-the system comprises one or more fuel pumps which can be mechanically driven by the internal combustion engine or driven by an electric motor. The fuel pumps create a fuel flow and pressure to transport the fuel to the internal combustion engine injection system, which supplies the fuel to the internal combustion engine combustion engine.25 rum.The injection system suitably comprises a high pressure fuel pump with a pressure accumulator, which high pressure fuel pump is usually driven by a mechanical connection to the internal combustion engine. The mechanical connection caninclude, for example, a gear transmission or a chain transmission.
    The operation of the high pressure fuel pump through the mechanical connection between the internal combustion engine and the high pressure fuel pump can due to the2Incoming components cause noise, which can be perceived as disturbing to the environment. In order to meet the noise restrictions that exist in the automotive industry, it is advisable to minimize the noise level of having a vehicle in the strongest male position.
    Various methods and systems have been proposed in the prior art for operating a fuel pump. For example, in document US 2011/0005500 A1 a transmission device for an internal combustion engine is shown, a high pressure fuel pump is driven by the crankshaft of the internal combustion engine through a chain transmissionsystem. In this way, a drive system for high-pressure fuelthe pump, which is flexible but which requires a special design at the internal combustion engine, and has a relatively short service life.
    Furthermore, the documents US1067424 and US2011 / 0209680 describe systems forfuel injection into an internal combustion engine, where a fuel pump is driven bythe crankshaft of the combustion engine through a gear transmission system comprising a plurality of gears, which can cause disturbing noises.
    Despite known solutions in the field, there is still a need todevelop a drive system for an industry pump, which helps to dampen noisevaerna.
    SUMMARY OF THE INVENTIONThe object of the present invention is to provide a drive arrangement for a fuel pump which minimizes the noise levels.
    The object of the invention is also to provide a drive arrangement for onefuel pump, which is compact and space-efficient.3A further object of the invention is to provide a drive arrangement for a fuel pump which is robust, durable and durable and which has a relatively long service life.
    These objects are achieved with a drive arrangement as defined in claim 1.
    According to the invention, the above objects are achieved with a drive arrangement intended fora fuel pump mounted on an internal combustion engine, used in the drive arrangement, comprises a first gear arranged on a crankshaft has been combusted.the drive motor and a second gear arranged on a drive shaft have the fuel pumppen. Furthermore, the first gear and the second gear are arranged in direct engagement with each other.
    The invention also relates to an internal combustion engine and a vehicle comprisingthe arrangement described above.
    DETAILED DESCRIPTION OF THE INVENTIONThe invention is described below with reference to the drive arrangement whichgenerally described above.
    The drive arrangement is suitably arranged in connection with the internal combustion engine and the fuel pump. The drive arrangement is suitably constituted by a gear transmission, which conveys force from the crankshaft of the internal combustion engine tothe drive shaft of the fuel pump and thus drives the fuel pump.
    By arranging the first gear and the second gear in direct engagement with each other, a drive arrangement is provided, which minimizes the noise levels. By arranging the first and second gears in directengagement with each other, so that the teeth have the first gear and the teethwhen the second gear is in engagement with each other, no intermediate wheels are needed between the first and the second gear. In gear shafts, vibration occurs4down caused by variations in the gear forces acting on the gears during engagement and these vibrations cause noise. The gear forces can vary in size, direction and point of attack and depend, among other things, on the gear radius, torque and inertia. Intermediate wheels are double loaded with gear forces because they are inengagement with at least two gears / intermediate wheels and thus at leaststone two cog grips. A gear engagement is defined as the direct connection / engagement between two gears / intermediate wheels. By reducing the number of intermediate wheels in the drive arrangement according to the present invention, the number of gear engagement between the fuel pump and the internal combustion engine and direct drive is minimized.of the fuel pump via the crankshaft of the internal combustion engine. That's rightA drive arrangement is provided for an fuel pump, which minimizes the noise level and which is compact and space-efficient.
    By reducing the number of gears / intermediate wheels in engagement with thethe second gear is provided, a fuel pump driver is provided.range, which is robust, durable and durable and thus has a relatively long service life.
    The fuel pump is preferably a separate unit which is mountedthe combustion engine. By using a separate fuel pump instead of onewith the internal combustion engine integrated fuel pump, service and maintenance of the fuel pump are facilitated. In the same way, service and maintenance are facilitated by the drive arrangement, as it is easy to disassemble and replace the fuel pump, its drive shaft and the other gear has the drive arrangement. By usingvanda a separate / external fuel pump thus achieves a flexible anduser-friendly drive arrangement intended for a fuel pump.
    The drive shaft of the fuel pump, on which the second gear is mounted, and the crankshaft of the internal combustion engine, on which the first gear is mounted, tightenthemselves in parallel with each other.
    Lamply, the drive arrangement according to the present invention entails a noise reduction between the 3-6 dB Iran gear transmission, relatively previously known constructions with intermediate wheels.
    The first gear preferably has a diameter of at leastequal to the diameter of the other gear. Alternatively, the first gear is larger than the second gear, which results in a gear ratio. Alternatively, the first gear may be smaller than the second gear. Preferably, the ratio between the first gear and the second gear is as follows.that the ratio between the speed of the other gear (drive shaft of the fuel pump)and the speed of the first gear (crankshaft) is between 0.8-2, more preferably 1-2. The first and second gears have a large diameter, which means that the gear forces acting on the gears as well as the gap (angular gear play) in the gear grip can be reduced. In this way a drive arrangement is achievedfor a fuel pump, which minimizes the noise level.
    The gap in the gear grip, also called the angular gear play, is calculated by the farm below:tan co = —xwhere x is the distance between two teeth and r is the radius of the gear. Angular tooththe clearance is preferably less than 0.5 degrees and x is preferably less than 0.5 mm. From the formula it appears that the larger the radius of the gear, the lower the angular gear play and thus the noise level. A larger gear also exhibits greater inertia and torque, which reduces the effect on the gear.the gear forces and thus the noise levels can be reduced.
    Lamply, the first gear has a diameter between 150-300 mm, preferably 200-260 mm, more preferably 240 mm.
    Lamply, the second gear has a diameter between 150-300 mm,preferably 200-260 mm, more preferably 240 mm.6Lamply, a flywheel is arranged at the crankshaft of the internal combustion engine adjacent the first gear. The flywheel is suitably arranged in the rear edge of the crankshaft. At the rear edge of the crankshaft, the flywheel is further connected in connection witha gearbox, generator or pump of the vehicle. The first gear andthus the second gear is suitably arranged narrowing the flywheel at the rear edge of the crankshaft. The flywheel's inertial mass means that the crankshaft is more flexible in its front edge than in its rear edge. When the first gear is arranged at a portion of the crankshaft which is stable, the risk of gearvariations in the engagement between the first and second gears. Thus obtainedread a lower noise level when the first gear is arranged, the crankshaft has a narrowing flywheel at the rear edge of the crankshaft, and when the first gear is arranged at the front edge of the crankshaft. Narrowing means that the second gear is arranged within a distance of up to about 800 mm Iran flywheel, seenalong the extension of the crankshaft.
    Preferably, at least one intermediate wheel is arranged in connection with the first gear. The at least one intermediate wheel is suitably also arranged in connection with a third gear on a camshaft of the internal combustion engine.
    The at least one intermediate wheel is suitably arranged in direct engagement withthe first gear and the third gear. In this way, the combustionthe engine crankshaft both the fuel pump and the combustion engine camshaft.
    According to the present invention, the first gear is arranged to burn the shaft.crankshaft of the engine. Furthermore, a first intermediate wheel is suitably arranged in thedirect engagement with the first gear, which first intermediate wheel is also in direct engagement with a second intermediate wheel. The second intermediate wheel is suitably arranged in direct engagement with a third intermediate wheel, which third intermediate wheel is also in direct engagement with a third and a fourth gear. The third gear issuitably arranged has a first camshaft of the internal combustion engine and itthe fourth gear is arranged on a second camshaft of the internal combustion engine.7In this way, the combustion engine's crankshaft drives both the fuel pump and the rear camshafts.
    According to one aspect of the present invention, the fuel pump is provided.the second gear only engaged with the first gear. Byminimize the number of cog grips against the second gear arranged by the fuel pump, minimize the angular amplitude and force of the cog grips. In this way the noise levels are reduced.
    The fuel pump connected to the internal combustion engine is preferably onehigh pressure pump.
    According to one aspect of the present invention, there is provided a drive arrangement for a hash an internal combustion engine fueled fuel pump,the combustion engine is preferably a diesel engine.
    Further advantages of the invention will become apparent from the following detailed description of the exemplary embodiments of the invention.
    BRIEF DESCRIPTION OF THE DRAWINGSIn the following, by way of example, preferred embodiments of the invention are described with reference to the accompanying drawings, in which:Fig. 1 shows a schematic side view of a vehicle, which comprises a driverarrangement arranged for a has an internal combustion engine mounted fuel pump according to an embodiment of the present invention,Fig. 2 shows a fuel pump mounted on an internal combustion engine.8Fig. 3 shows a side view of a drive arrangement according to an embodimentof the present invention,Fig. 3b shows the drive arrangement according to Fig. 3a seen straight from behind seen in frontthe propulsion direction of the device.
    Fig. 4 schematically shows a view of a drive arrangement according to an embodimentform of the present invention.
    DETAILED DESCRIPTION OF EMBODIMENTS OF THE INVENTIONFig. 1 shows a schematic side view of a vehicle 1, which vehicle comprises onedrive arrangement 2 for a fuel pump connected to an internal combustion engine 420 according to the present invention. The internal combustion engine 4 is connected to a gearbox 8, which is connected to the drive wheel 10 of the vehicle 1 via a transmission. The vehicle also includes a chassis 12.
    Fig. 2 shows an internal combustion engine 4 with a crankshaft 26. On the internal combustion engine4 is a fuel pump 20 mounted. The fuel pump is thus a separate unit which has been mounted on the combustion engine 4. The fuel pump 20 is driven by means of a drive arrangement 2, which is described in more detail in Figs. 3a and 3b.
    Fig. 3a shows a drive arrangement 2 intended for one of an internal combustion engine 4pre-assembled fuel pump 20 according to an embodiment of the invention. The fuel pump 20 is a high pressure pump which with high pressure feeds fuel to the cylinders of the internal combustion engine (not shown). The internal combustion engine 4 comprises a crankshaft 26, in which a first gear 24 is arranged. At the fuel pump20, a drive shaft 22 with a second gear 34 is provided. The fuel pumpThe crankshaft 26 of the combustion engine 4 is arranged, which crankshaft 26 extends parallel to the drive shaft 22 of the fuel pump 20. The crankshaft 269has a front end 28 and a rear end 30, used in a flywheel 32 is arranged at the rear end 30. The first gear 24 is arranged narrowing the flywheel 32 on the crankshaft 26. The distance between the flywheel 32 and the first gear 24 is in this embodiment 600 mm seen alongthe extension of the crankshaft 26. The first gear 24 has the crankshaft 26 and thatthe second gear 34 of the drive shaft 22 of the fuel pump 20 are arranged in direct engagement with each other, so that the teeth of the first gear 24 (not shown) and the teeth (not shown) of the second gear 34 are engaged with each other. In this way, the fuel pump 20 is driven directly by the combustion engine's crankshaft 26 via itfirst gear 24. Because the drive arrangement 2 comprises a reduced onenumber of gears, the number of gears engaged between the fuel pump 20 and the crankshaft 26 is minimized, thereby minimizing the noise level. The quieter the gear grip, the greater the risk of play and the effect of gear forces, which in turn leads to noise. The inertial mass of the flywheel 32 causes the rear end 30 of the crankshaft 26more stable than the front end 28. By arranging the first gear24 on the crankshaft 26 adjacent the flywheel 32 provides a stable engagement, and thus lower torsional vibration amplitudes, between the first gear 24 and the second gear 34 as the gear engagement is subjected to fewer force variations. Fewer force variations lead to fewer vibrations and so onthe noise levels caused by the drive arrangement are minimized 2. Furthermore, thethe gear 24 and the second gear 34 are of the same size / diameter, which means that the ratio between the speed of the first gear and the speed of the second gear is 1.0, ie 1: 1 gear ratio. Because the first gear 24 has at least the same start as the second gear 34, the present gearfinning, the tooth forces are reduced and the gap in the tooth grips is minimized. PaIn this way, the noise levels caused by the drive arrangement are minimized. Figure 3a also shows an intermediate wheel 36 arranged in direct engagement with on the one hand the first gear 24 and on the other hand a third gear 38 having a camshaft 40 of the combustion gear.4. The camshaft 40 extends parallel to the crankshaft 26. Thusthe camshaft 40 is driven by the crankshaft 26 via the first gear 24 and the intermediate wheel36.
    Fig. 3b shows the drive arrangement 2 according to Fig. 3a in a view straight from the rear seen in the propulsion direction of the vehicle 1.
    Fig. 4 schematically shows a drive arrangement 2 intended for a fuel pumpaccording to an embodiment of the present invention. The drive arrangement 2 comprises has a first gear 24 arranged on the crankshaft 26 (not shown) of the internal combustion engine 4 and a second gear 34 arranged on the drive shaft 22 (not shown) of the fuel pump 20. The first gear 24 and the second gear 34 are engaged.arranged in direct engagement with each other. A first intermediate wheel 50 is arranged inengagement with the first gear 24. A second intermediate wheel 52 is arranged in engagement with the first intermediate wheel 50 and a third intermediate wheel 54. The third intermediate wheel 54 is in turn further arranged in engagement with a third gear 56 arranged having a first camshaft (not shown) and a fourth gear 58 arrangednat has a second camshaft (not shown).
    The present invention is not to be construed as limited to the embodiments described above, but modifications and combinations thereof may occur within the scope of the appended claims. The number of intermediate wheels connected to the first gearthe wheel can, for example, be any heist. The first gear can be the samestart as the second gear or alternatively larger than the second gear, or even smaller than the second gear, the ratio between the speed of the second gear (drive shaft drive shaft) and the speed of the first gear (crankshaft) is between 0.8-2, more preferably 1 -2. Sliding bearing or any other shapeof bearings may be provided with the gears and / or the intermediate wheels for additionalgare noise damping. The fuel pump can be mounted on, for example, a diesel engine or an otto engine. The internal combustion engine can be of a horizontal or vertical model. The vehicle which the drive arrangement can be arranged can be, for example, a heavy vehicle such as a bus or a truck. Fordo-net has which the drive arrangement can be arranged can for example be onebat.11
    权利要求:
    Claims (1)
    [1]
    1. '6H 01-01. OZ z oc qc • 6! D 4/4 58 56 54), 22 )! / 34, / -----___---- 7 24
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US1067424A|1912-07-06|1913-07-15|Lawrence C Hamke|Fuel-pump for internal-combustion engines.|
    US5184582A|1987-12-01|1993-02-09|Yamaha Hatsudoki Kabushiki Kaisha|Engine unit for vehicle|
    JPS63314359A|1987-06-17|1988-12-22|Kubota Ltd|Fuel injection pump mounting device for diesel engine|
    DE19529368C1|1995-08-10|1996-10-31|Dolmar Gmbh|Fuel injection and lubricant feed system for combustion engine|
    JP4124717B2|2003-10-28|2008-07-23|ヤンマー株式会社|Diesel engine reverse rotation prevention mechanism|
    KR100960647B1|2005-02-02|2010-06-07|맨 디젤 필리얼 아프 맨 디젤 에스이, 티스크랜드|A large tw0-stroke diegel engine with hydraulically actuated exhaust gas valves|
    EP2088308A1|2008-02-08|2009-08-12|Perkins Engines Company Limited|Releaseably positioning two rotatable elements relative to each other|
    JP2009203937A|2008-02-28|2009-09-10|Honda Motor Co Ltd|Timing transmission mechanism in engine|
    DE102009001462A1|2009-03-11|2010-09-16|Robert Bosch Gmbh|Internal combustion engine comprises high pressure injection pump with cam- or eccentric shaft, which is indirectly connected with crankshaft by gear|
    JP2011163252A|2010-02-12|2011-08-25|Honda Motor Co Ltd|Engine|CN105909437B|2016-05-06|2018-11-23|潍柴动力扬州柴油机有限责任公司|A kind of fuel pump transmission device and the fuel injection system equipped with the device|
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    优先权:
    申请号 | 申请日 | 专利标题
    SE1351448A|SE539242C2|2013-12-05|2013-12-05|Drive arrangement for a fuel pump|SE1351448A| SE539242C2|2013-12-05|2013-12-05|Drive arrangement for a fuel pump|
    KR1020167017799A| KR20160093696A|2013-12-05|2014-11-28|Drive arrangement for a fuel pump|
    EP14867277.7A| EP3077655A4|2013-12-05|2014-11-28|Drive arrangement for a fuel pump|
    PCT/SE2014/051417| WO2015084233A1|2013-12-05|2014-11-28|Drive arrangement for a fuel pump|
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