• 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 an engine test stand (30) having a single-cylinder experimental internal combustion engine (40), in particular a single-cylinder two-stroke crosshead internal combustion engine, with a crankcase (8) receiving a crankshaft (8) on which a cylinder housing (6) with a cylinder (7) is interchangeable. 2) for receiving a reciprocating piston (3) is mounted, with at least one through the crankshaft (8) driven mass balancing device (50). In order to simplify the conversion of the engine test bench for different engine variants, it is provided that the mass balance device (50) is integrated in a base frame (11) fixed to the test bench, wherein the crankcase (70) is fixedly connected to the base frame (11).
    公开号:AT512186A4
    申请号:T501372012
    申请日:2012-04-18
    公开日:2013-06-15
    发明作者:Gerhard Ing Maier；Wilhelm Greylinger；Rene Koegl
    申请人:Avl List Gmbh；
    IPC主号:
    专利说明:

    Pnnfed: 19-04-2012: & $ 4
    The invention relates to an engine dynamometer with a single-cylinder experimental engine, in particular an Elnzylinder two-stroke crosshead internal combustion engine, with a crank case receiving a crankcase on which interchangeably a cylinder housing is mounted with a cylinder for receiving a reciprocating piston, with at least one of the Crankshaft driven mass balance device.
    From AT 263 454 B a single-cylinder experimental engine with a mounted on the crankcase replaceable cylinder block and cylinder head is known. The crankcase is substantially retained when retrofitting the experimental engine. This single-cylinder experimental engine is designed for the development of high-speed internal combustion engines, but not suitable for the development of large-displacement two-stroke crosshead engines, for example, with bores between 350 and 1000 mm and piston strokes, for example between 1500 and 3500 mm.
    In conventional test setups for single-cylinder engines of large size, the conversion to a different engine variant is a very difficult and time-consuming endeavor, since either the entire engine and / or all structural components must be replaced.
    The object of the invention is to avoid these disadvantages, and to simplify the conversion to another engine variant in slow-running single-cylinder two-stroke cross-head internal combustion engines.
    According to the invention this is achieved in that the
    Mass balance device is integrated in a test stand fixed base frame, the crankcase is firmly connected to the base frame.
    The base frame with the mass balancing device is an integral part of the engine dynamometer and has a plurality of mass balance shafts, preferably two balancer shafts first order and two balance shafts second order, which are drivable by the crankshaft via a gear train, preferably a gear transmission or a traction mechanism.
    Printed: 19-04,2012 Ε0Ϊ4 TQ2GT2 / 50T37 2
    The crankcase consists of a lower part and an upper part, wherein the crankcase lower part is connected to the base frame. The crankcase shell! is removably attached to the crankcase base.
    The experimental engine has a crosshead, which is mounted displaceably in the cylinder housing. The crosshead is connected on the one hand via a connecting rod with the crankshaft and on the other hand via a piston rod with the reciprocating piston in the cylinder and movable. It is advantageous if the cylinder is formed by a replaceable bushing.
    The crankshaft is connected via a drive shaft with a flywheel and a braking device, wherein between the flywheel and the braking device, an external outer bearing of the engine dynamometer for the drive shaft can be arranged. The braking device is preferably designed as a water vortex brake to accommodate the high performance of the experimental engine can.
    It is particularly advantageous if the crankshaft is connected to an electric machine, preferably a start and / or towing motor. About the electric machine, it is possible to drag the internal combustion engine or bring to a starting speed. But also a braking torque for the experimental engine can be applied via the electric machine.
    Substantial relief results in the modification of the engine test bench in that the engine test bench has a universally replaceable basic structure and at least one variable engine module. The basic structure remains practically unchanged for all possible engine variants, the engine modules can be flexibly replaced depending on the engine variant. Thus, it is no longer necessary to exchange all components of the engine test bench when changing from one engine variant to another engine variant. This can significantly reduce changeover times and costs.
    It is particularly advantageous if the basic structure of the components,
    Base frame, balancer shafts, lower crankcase,
    Printed; 1-S-04-2012 E014 10 2Öt2 & G * 37
    Crankcase upper part, flywheel, braking device and electric machine, preferably also a transmission between the crankshaft and mass balance device for driving the balancer shafts having.
    A large part of the engine test bench does not have to be changed during the conversion.
    Nevertheless, there is a high degree of flexibility for different engine variants, if at least one engine module has at least one of the components cylinder housing, cylinder, crankshaft, connecting rod, crosshead, piston rod and piston.
    In order to meet the requirements of the mass balance at different engine sizes, is provided in the context of the invention that in each case at least one interchangeable and / or variable balancing mass can be arranged on the mass balance. The balancing weights can be adapted to the requirements of the respective engine.
    In order to take into account the different loads and requirements of lubrication points, it is advantageous if the engine test stand has a plurality of lubricating oil scrub runs, wherein preferably at least two lubricating oil circuits are formed separately from each other.
    It can be provided that a first lubricating oil circuit for the lubricating oil supply the bearings of the crankshaft, the connecting rod, the balancer shafts and the transmission gear, a second lubricating oil circuit for the lubricating oil supply of the crosshead and a third lubricating oil circuit for the lubrication of the piston to be designed.
    The invention will be explained in more detail below with reference to FIGS.
    They show schematically:
    1 shows the engine test stand in a section along the line I-I in Fig. 2nd
    Fig. 2 shows the engine dynamometer in a section along the line II-II In
    Fig. 1. 10 2012/90137
    Printed: 19-042012
    The test setup of the engine test bench 30 for a single-cylinder experimental engine 40 basically has components of the basic structure A, which remain on the engine test bench 30 and are designed so that they are suitable for different engine sizes. These components include base frame 11 with mass balance device 50, crankcase 70 with crankcase lower part 10 and crankcase upper part 9, flywheel 16, outer bearing 20, drive shaft 17, clutch 21, braking device 18 and electric machine 19, which acts as a start and / or towing motor.
    Furthermore, the experimental setup has at least one engine module B with the engine-specific components cylinder cover 1, cylinder 2, piston 3, piston rod 4, crosshead 5, cylinder housing 6, connecting rod 7, and crankshaft 8. The components of the engine module B of the single-cylinder experimental engine 40 are always adapted to the new engine size.
    In the base frame 11, a mass balancer 50 of first and second order is integrated. The mass balancing weights 13, 15 mounted on the mass balance shafts 12, 14 of first and second order are respectively tuned to the requirements of the different engine sizes. In the front portion 11 a of the base frame 11, a transmission gear 60 for the balancer shafts 12, 14 is arranged, wherein the transmission gear 60 may be formed by a gear transmission 22. As an alternative to the toothed gear 22, a traction mechanism can be used. The drive of the balancer shafts 12, 14 can be carried out starting from the crank shaft 8 via the gear transmission 22 or motor variant with very large strokes on a chain drive.
    On the base frame 11, the crankcase lower part 10 and the crankcase upper part 9 are positioned, wherein the crankshaft 8 is disposed lying in the crankcase lower part 10. The main bearing of the crankshaft 8 is tuned to the largest possible engine variant, thus crankcase upper and lower parts 9, 10 can be adopted unchanged for each engine variant. The crankshaft 8 is rotatably connected to the drive shaft 17 of the basic structure A. In the longitudinal direction of the crankshaft 8 is on the
    Prihted: 19-04 ^ 2012 E014 10 2012/50137
    Drive shaft 17, a flywheel 16 attached, which is used unchanged for all possible engine sizes - The flywheel 16 is followed by the outer bearing 20, which supports the drive shaft 17 and also always in the base frame 11 can remain. Between the outer bearing 20 and the braking device 18, a shaft coupling 21 is arranged, which is dimensioned so that it covers the requirements over the entire range of application and thus can be used unchanged for all possible experimental engine sizes in the intended area.
    The mounted on the base frame 11 braking device 18, which is advantageously designed as a water vortex brake is used to start defined Motoriastpunkten and also remains on the base frame 11. In order to enable an engine start despite the braking device 18, an electric machine 19 is provided with the the single cylinder experimental engine 40 can be started. Likewise, the electric machine 19 can be used for towing the single-cylinder experimental internal combustion engine 40. In tow mode, the test engine is brought to a defined speed without engine combustion in order to be able to carry out measurements. Furthermore, the electric machine 19 can also be used as a supporting power brake.
    The components of the engine module B are tuned with each change of an engine variant on the engine size to be operated and thus usually have to be disconnected from the base assembly A and changed at a motor change. Although the crankshaft 8 always has the same diameter of the main bearing, the lifting and connecting rod diameter of the crankshaft 8 are predetermined by the respective experimental engine. Piston strokes between 1500 and 3500 mm can be realized with the described engine test bench. In order to implement this range of piston strokes, a respective cylinder housing 6 is used for each change. In the cylinder housing 6, the crosshead 5 of the single-cylinder experimental internal combustion engine 40 is received.
    Basically, the use of three different lubricating oil circuits is possible, each of which may have different pressure levels. Here, a first lubricating oil circuit is used to supply oil to the bearing stiffeners of the crankshaft
    Printed: 19-04-2012 Ε0Ί4 b 10 2012/50137 8, the connecting rod 7, the mass balance shafts 12, 14 and the transfer gear 60. A second lubricating oil circuit is used for the lubricating oil supply of the crosshead 5, in which a different pressure level is often desired. A third lubricating oil circuit can be used for the lubrication of the piston 3, which is preferably carried out separately from the first and second lubricating oil circuit.
    With the engine test bench described, a flexible test basis can be created in order to be able to develop and test in a cost-effective manner differently sized single-cylinder experimental internal combustion engines 40, in particular two-stroke crosshead engines.
    权利要求:
    Claims (13)
    [1]




    An engine dynamometer (30) having a single-cylinder experimental engine (40), in particular a one-cylinder two-stroke crosshead engine, with a crankshaft (8) receiving a crankcase (70) on which interchangeable a cylinder housing (6) with a cylinder (2) for Receiving a reciprocating piston (3) is mounted, with at least one by the crankshaft (8) driven mass balancing device (50), characterized in that the mass balance device (50) in a test stand fixed base frame (11) is integrated, wherein the crankcase (70) is fixedly connected to the base frame (11). 2. engine test stand (30) according to claim 1, characterized in that the mass balance device (50) has two mass balance shafts (12) of the first order and two balance shafts (14) second order, which are rotatably mounted in the base frame (11). 3. engine test stand (30) according to claim 1 or 2, characterized in that the crankcase (70) has a fixed to the base frame (11) connected crankcase lower part (10) and with the crankcase lower part (10) releasably connected crankcase upper part (9), wherein the crankcase lower part (10) and the crankcase upper part (9) form main bearings for the crankshaft (8), which are designed for the engine test bench (30) maximum engine variant. 4. engine test stand (30) according to one of claims 1 to 3, characterized in that in the cylinder housing (6) a crosshead (5) is slidably mounted. 5. engine test stand (30) according to one of claims 1 to 4, characterized in that the cylinder (2) is formed by a replaceable bushing.

    Printed: 19 ^ 04-2012 E015 3ÜÜ 8
    [2]
    6. engine test stand (30) according to one of claims 1 to 5, characterized in that with the Kurbeiwelle (8), a flywheel (16) is rotatably connected.
    [3]
    7. engine test stand (30) according to one of claims 1 to 6, characterized in that the Kurbeiwelle (8), preferably via at least one Weil clutch (21), with a braking device (18) is connected.
    [4]
    8. engine test stand (30) according to claim 7, characterized in that the braking device (18) is formed by a brake water vortex.
    [5]
    9. engine test stand (30) according to one of claims 1 to 8, characterized in that the Kurbelweile (8) with an electric machine (9), preferably an electric starting and / or towing motor, is connected.
    [6]
    10. engine test stand (30) according to one of claims 1 to 9, characterized in that the engine test stand (30) universally for various experimental engine (40) replaceable base structure (A) and at least one variable motor module (B).
    [7]
    11. engine test stand (30) according to claim 10, characterized in that the basic structure (A) the components base frame (11), mass balance shafts (12, 14), crankcase lower part (10), crankcase upper part (9), flywheel (16), braking device ( 18) and electrical machine (19), preferably also a transmission gear (60) for driving the mass balancing device (50).
    [8]
    12. engine test stand (30) according to claim 10 or 11, characterized in that at least one engine module (B) at least one of the components cylinder housing (6), cylinder (2), crankshaft (8), connecting rod (7), crosshead (5) , Piston rod (4) and piston (3).
    [9]
    13. engine test stand (30) according to one of claims 1 to 12, characterized in that on the mass balance shafts (12, 14) each at least one interchangeable and / or variable balance weight (13, 15) can be arranged.



    E015 9
    [10]
    14. engine test stand (30) according to one of claims 1 to 13, characterized in that the engine test stand (30) has a plurality of lubricating oil circuits, wherein preferably at least two lubricating oil circuits are formed separately from each other.
    [11]
    15. engine test stand (30) according to claim 14, characterized in that a first lubricating oil circuit for the lubricating oil supply of the bearing parts of the crankshaft (8), the connecting rod (7), the mass balance shafts (12, 14) and the transmission gear (60) is designed ^ In this case, a second lubricating oil circuit is designed for the supply of lubricating oil to the crosshead (5).
    [12]
    17. engine test stand (30) according to any one of claims 14 to 16, characterized in that a third lubricating oil circuit for the lubrication of the piston (3) is designed.
    [13]
    18. engine test stand (30) according to any one of claims 14 to 17, characterized in that at least two lubricating oil circuits have different pressure levels. 2012 04 18 Fu / Bt
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    引用文献:
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    法律状态:
    2017-12-15| MM01| Lapse because of not paying annual fees|Effective date: 20170418 |
    优先权:
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    AT501372012A|AT512186B1|2012-04-18|2012-04-18|engine test stand|AT501372012A| AT512186B1|2012-04-18|2012-04-18|engine test stand|
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    US13/865,327| US20130283901A1|2012-04-18|2013-04-18|Engine test bench|
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