CN106703955A - Exhaust heat-electricity conversion device for tractors - Google Patents

Exhaust heat-electricity conversion device for tractors Download PDF

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Publication number
CN106703955A
CN106703955A CN201710166962.8A CN201710166962A CN106703955A CN 106703955 A CN106703955 A CN 106703955A CN 201710166962 A CN201710166962 A CN 201710166962A CN 106703955 A CN106703955 A CN 106703955A
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CN
China
Prior art keywords
heat
thermoelectric conversion
heat exchanger
conversion device
tail gas
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201710166962.8A
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Chinese (zh)
Inventor
全睿
周未
刘光银
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Hubei University of Technology
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Hubei University of Technology
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Application filed by Hubei University of Technology filed Critical Hubei University of Technology
Priority to CN201710166962.8A priority Critical patent/CN106703955A/en
Publication of CN106703955A publication Critical patent/CN106703955A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N5/00Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy
    • F01N5/02Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy the devices using heat
    • F01N5/025Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy the devices using heat the device being thermoelectric generators
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/10Internal combustion engine [ICE] based vehicles
    • Y02T10/12Improving ICE efficiencies

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)

Abstract

The invention discloses an exhaust heat-electricity conversion device for tractors. The exhaust heat-electricity conversion device comprises a heat-electricity conversion device body, a muffler and an exhaust pipe connected with the muffler; the exhaust pipe comprises an air outlet pipe and an air inlet pipe, the heat-electricity conversion device body comprises a heat exchanger, a heat-electricity module and a cooling device, the heat exchanger is of a barrel structure made from heat-conducted materials and provided with a polygonous periphery, the heat exchanger sleeves the periphery of the muffler in a vertical mode, the heat-electricity module is formed by multiple heat-electricity conversion elements which are evenly distributed around the heat exchanger, the heat end of each heat-electricity elements is attached to the outer surface of the heat exchanger, generated energy of the heat-electricity conversion elements is used by load or stored in an energy storage battery through lead connection, the cooling device is attached to the cold end of each of the heat-electricity conversion elements to have cool ends cooled, and temperature difference generation is formed at cold and heat ends of the heat-electricity conversion elements. By the arrangement, waste heat generation of exhaust of an engine is fully utilized, energy sources are recycled, and high application value is achieved.

Description

A kind of tail gas thermoelectric conversion device on tractor
Technical field
The present invention relates to motor-vehicle tail-gas temperature difference electricity generation device and method field, tractor to be used for more particularly to one kind Tail gas thermoelectric conversion device.
Background technology
The fuel oil energy about 30% of conventional fuel oil engine is discharged in the way of tail gas waste heat, causes huge energy wave Take, using thermoelectric generation technology reclaim tail gas waste heat carry out generate electricity supply tractor onboard system using be improve its fuel-economy One important channel of property.At present, the most horizontal mode of existing tail gas electricity generating device of automobile is arranged on automobile chassis lower section, examines Consider the particularity of the erect-type structure of tractor exhaust emissions, silencer and thermoelectric conversion device are carried out integration and set by the present invention Meter.Because the escaping pipe of tractor, silencer are placed in tractor body top, air flow property is good, dissipating in the present invention Backing is exposed in atmosphere, using wind-cooling heat dissipating pattern.Compared to water-cooling pattern, the present invention installs simple, low cost, nothing Must from tractor cooling system drainage cooling water and influence its thermal balance, reduce transformation difficulty;Meanwhile, disappearing in the present invention The integrated design of sound device and thermoelectric conversion device, because silencer is closed in inside thermoelectric conversion device, is not substantially changing Under conditions of change soundproof effect, it is also possible to carry out the heat conduction of tail gas and heat exchanger, reach and be not take up part space, profile Effect attractive in appearance.
The content of the invention
It is an object of the invention to provide a kind of tail gas thermoelectric conversion device on tractor, using motor exhaust The waste-heat power generation of pipe, improves the conversion efficiency of thermoelectric of waste heat from tail gas.
To solve the above problems, the technical solution adopted by the present invention is:
A kind of tail gas thermoelectric conversion device on tractor, including thermoelectric conversion device, silencer and offgas duct, the tail Tracheae includes escaping pipe and air inlet pipe, and erect-type silencer its import is connected by air inlet pipe with engine, and muffler outlet is logical Cross erect-type escaping pipe to arrange to air, the thermoelectric conversion device includes heat exchanger, electrothermal module group and heat abstractor, described Heat exchanger is polygonal barrel-like structure for the periphery that Heat Conduction Material is made, and the heat exchanger of barrel-like structure is erect mode and is enclosed within Silencer periphery is simultaneously fixedly linked with silencer, and electrothermal module group is made up of multiple thermoelectric conversion elements, multiple thermoelectric converters Part is evenly distributed on surroundings, and the hot junction of thermoelectric conversion element is uniformly fitted with the polygonal exterior surface of heat exchanger, Multiple thermoelectric conversion element institute's generated energy are connected by wire and used to load or stored in energy-storage battery by after voltage transformation Interior, the heat abstractor is uniformly fitted with the cold end of thermoelectric conversion element, for the cold end radiating to thermoelectric conversion element, in heat Thermo-electric generation is formed between power conversion device cold end and hot junction.
Used as improvement, the heat exchanger internal diameter is bigger than silencer, and silencer periphery is provided with multiple fixing muscles, heat exchanger Silencer periphery is fixed on by way of being connected with fixing muscle.
As improvement, multiple thermal holes for conducting heat are offered on the barrel of the silencer.
Used as improvement, the heat abstractor includes radiating bottom plate and the fin being fixed on radiating bottom plate, the radiating Base plate is uniformly fitted in the cold end of thermoelectric conversion element.
Used as improvement, the radiating bottom plate and fin have multiple, and each fin one radiating bottom plate of correspondence is simultaneously bonded Into an entirety, each radiating bottom plate one thermoelectric conversion element of correspondence, multiple radiating bottom plates and fin are evenly distributed on heat The periphery of exchanger, and fixed by fixing device.
Used as improvement, the fixing device includes steel wire and the groove located at radiating bottom plate upper and lower ends horizontally set, leads to Cross with steel wire through groove on radiating bottom plate, the multiple radiating bottom plates on same height outer surface on heat exchanger are tied up solid It is fixed.
As improvement, multiple fixed dams, the fixed gear are provided with the heat exchanger polygon surface different height Plate is used to for the radiating bottom plate and thermoelectric conversion element at heat exchanger polygon surface different height to carry out isolation fixation.
Used as improvement, the heat-exchanger surface contacted with thermoelectric conversion element is provided with thermostable heat-conductive material coating, no The heat-exchanger surface and other exposed regions contacted with thermoelectric conversion element are respectively equipped with insulation material layer.
Used as improvement, the radiating bottom plate is provided with thermostable heat-conductive material coating with thermoelectric conversion element contact surface.
Used as improvement, the outer peripheral face of the heat exchanger is triangle, quadrangle, pentagon, hexagon, heptagon or eight Side shape.
The present invention has the following advantages that compared with prior art:Silencer and thermoelectric conversion device are carried out one by the present invention Bodyization is designed.Because escaping pipe, the silencer of tractor are placed in tractor body top with erect-type, air flow property is good Good, the fin in the present invention is exposed in atmosphere, using wind-cooling heat dissipating pattern.Compared to water-cooling pattern, present invention peace Dress is simple, without the drainage cooling water from tractor cooling system, is installed and transformation difficulty so as to reduce;Meanwhile, the present invention In silencer and thermoelectric conversion device integrated design, because silencer is closed in inside thermoelectric conversion device, not Under conditions of influence noise elimination and exhaust effect, it is also possible to carry out the heat conduction of tail gas and heat exchanger, reach and be not take up part Space, the effect of good appearance.
Brief description of the drawings
Fig. 1 is using the tractor overall structure diagram of tail gas thermoelectric conversion device.
Fig. 2 is tail gas thermoelectric conversion device overall structure diagram.
Fig. 3 is thermoelectric conversion device structural representation.
Fig. 4 is the escaping pipe direction front view of Fig. 2.
Fig. 5 is a part of electrothermal module group structural representation of Fig. 4.
Fig. 6 is thermoelectric conversion element in heat-exchanger surface schematic layout pattern.
Fig. 7 is fixed dam and fin base arrangement schematic diagram.
Fig. 8 is silencer and internal heat exchanger structural representation.
Fig. 9 is acoustic wave filter structure schematic diagram.
Figure 10 is Fig. 9 escaping pipes direction front view.
Figure 11 is acoustic wave filter structure figure.
Brief description of the drawings, 1- escaping pipes, 2- thermoelectric conversion devices, 3- air inlet pipe, 4- engines, 5- vehicle bodies, 6- wheels, 7- heat Exchanger base plate, 8- fin, 9- fixed dams, 10- steel wires, 11- heat exchangers, 12- fin base plates, 13- heat to electricity conversion Device, 14- fixing grooves, 15- fixing muscles, 16- thermal holes, 17- silencers, 18- heat exchanger upper cover plates.
Specific embodiment
For a better understanding of the present invention, present disclosure, but present disclosure is not limited solely to following reality Apply example.Those skilled in the art can make various changes or modifications to the present invention, and these equivalent form of values are same listed by the application Claims are further elucidated within the scope of limiting with reference to embodiment.
Embodiment 1
Shown in below figure 1, Fig. 2, Fig. 3, Fig. 4, Fig. 8, a kind of tail gas thermoelectric conversion device on tractor, the present embodiment machine Motor-car is tractor, and its main building block is:Escaping pipe 1, thermoelectric conversion device 2, air inlet pipe 3, engine 4, vehicle body 5, car Wheel 6, heat exchanger base plate 7, fin 8, fixed dam 9, steel wire 10, heat exchanger 11, fin base plate 12, electrothermal module 13rd, fixing groove 14, fixing muscle 15, thermal hole 16, silencer 17, heat exchanger upper cover plate 18.
As shown in Figure 1 and Figure 2, after tractor engine 4 starts, motor exhaust is discharged from the exhaust outlet of engine 4, is started Machine exhaust outlet is connected with air inlet pipe 3, and tail gas reaches silencer 17 along air inlet pipe 3, and motor exhaust passes through silencer thermal hole 16 enter inside heat exchanger 11.
As shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6, thermoelectric conversion device 2 is from inside to outside by heat exchanger 11, multiple heat to electricity conversion The electrothermal module group of the composition of device 13, fin base plate 12, fixing groove 14, fin 8, fixed dam 9, heat exchanger base plate 7 grades are constituted.The installation method of thermoelectric conversion device 2 is:The surface of pentagonal heat exchanger 11 first scribbles certain thickness high temperature resistant Heat conductive silica gel, corresponding multiple thermoelectric conversion elements 13 on each hot face, the hot junction of thermoelectric conversion element 13 passes through thermostable heat-conductive Silica gel is attached on the hot face of heat exchanger 11, while multiple thermoelectric conversion elements 13 its cold end on each hot face is also coated with one Determine the thermostable heat-conductive silica gel of thickness.Each thermoelectric conversion element 13 with a circumference be one group, referred to as electrothermal module group(As schemed 5 show).Each electrothermal module group five fin base plates 12 of correspondence, the upper surface uniform welding arrangement of fin base plate 12 is multiple to be dissipated Backing 8, the lower surface of fin base plate 12 is close to be connected by thermostable heat-conductive silica gel with the cold end of thermoelectric conversion element 13. (As Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7 show)2 fixing grooves 14 and multiple fin are evenly arranged on each fin base plate 12 8, the surface soldered of heat exchanger 11 has multiple fixed dams 9, and wherein each two fixed dam 9 is fixed and clamps a fin base plate 12 and corresponding thermoelectric conversion element 13;Fixing groove 11 is used for placing the steel wire 10 of binding fin base plate 12;It is each After multiple thermoelectric conversion elements 13 of circumference and heat exchanger 11, the adhesion of fin base plate 12, in surrounding steel wire along fixation Groove 11 is tied up fixation, strengthens the cold and hot end in contact and shock resistance of multiple thermoelectric conversion elements 13.
As shown in Fig. 8, Fig. 9, Figure 10, Figure 11, silencer 17 is embedded in inside heat exchanger 11, the tail gas of engine 4 along Air inlet pipe 3 enters in silencer 17, and multiple thermal holes 16 are equipped with the tube wall of silencer 17, and the tail gas in silencer 17 passes through heat conduction Hole 16 is diffused in heat exchanger 11 to outside.Each circumferencial direction is evenly arranged 5 fixing muscles 15 on the barrel of silencer 17, disappears Sound device 17 is fixed by way of welding using fixing muscle 15 with the inwall of heat exchanger 11, the quantity and heat exchanger of fixing muscle 15 The quantity correspondence in 11 hot faces, is conducive to whole thermoelectricity dress rotary device 2 and the uniform force of silencer 17.The profit of heat exchanger upper cover plate 18 The hole being equipped with center is close to through escaping pipe 1 with the port end surface of heat exchanger 11, will be covered on heat exchanger using welding Plate 18 is fixed with heat exchanger 11 and the soldering of escaping pipe 1;The center of heat exchanger base plate 7 is provided with a hole, heat exchanger base plate 7 The inlet-end surface of heat exchanger 11 is attached to through air inlet pipe 3 using hole, by heat exchanger base plate 7 and air inlet pipe 3 and heat exchange The place of the contact of device 11 is welded and fixed, so that by the fixed closed of silencer 17 inside heat exchanger 11, the heat of vehicle exhaust Amount can be efficiently transferred to the surface of heat exchanger 11.After tail gas heat quantity is through absorption, air is flowed into along escaping pipe 1.
As shown in Figure 2, Figure 3, Figure 4, thermoelectric conversion device 2 takes away the heat on fin 8 using air flow, to thermoelectricity The cold end of switching device 13 provides low temperature environment.Wherein, fin 8 uses bifurcation structure, increased area of dissipation, reaches and effectively carries The effect of the radiating efficiency of fin high 8;The surface of heat exchanger 11 in thermoelectric conversion device 2 does not contact with thermoelectric conversion element 13 Region and exposed region, carried out with heat-barrier material covering filling form insulation material layer, prevent air flow to heat The influence of the temperature of exchanger 11.Thermoelectric conversion element 13 can persistently have under the collective effect of heat exchanger 11 and fin 8 Effect is run well, and the electric energy that multiple thermoelectric conversion elements 13 are produced is connected after DC/DC carries out voltage transformation with wire and conveyed To vehicle mounted electrical apparatus or its give energy storage charge.
Tail gas thermoelectric conversion device of the invention can not only be applied to tractor engine as above-described embodiment In offgas duct, it can also be used in the offgas duct of the engine of other motor vehicles, such as cutter of car, truck, engineering truck etc. There is the motor vehicle of engines tail tracheae and silencer.
Silencer 17 and thermoelectric conversion device 2 in the present invention are the integrated design, as shown in Figure 10, the shape of fixing muscle 15 It is flat, a sections of arc length 30.54rad, b ends arc length 30.54rad, 20.83mm wide, thick c=38.89 ° of thermal hole of 10mm angles 16 It is rectangular opening, its 36mm 4mm wide long, axial spacing 30mm.
It is pointed out that it is to be conducive to and thermoelectric converter that the periphery of present heat exchanger 11 is arranged to polygon The laminating heat transfer of part 13, therefore the width on each side of periphery of heat exchanger 11 is more than single thermoelectric conversion element 13, heat is handed over Parallel operation 11 can be not only the pentagon of embodiment 1, can also be arbitrary polygons more than three sides, it is contemplated that complexity and stabilization Sex chromosome mosaicism.The outer peripheral face of the heat exchanger 11 is most preferably triangle, quadrangle, pentagon, hexagon, heptagon or eight sides Shape.
The content not being described in detail in this specification belongs to prior art known to professional and technical personnel in the field.

Claims (10)

1. a kind of tail gas thermoelectric conversion device on tractor, it is characterised in that:Including thermoelectric conversion device, silencer and Offgas duct, the offgas duct includes escaping pipe and air inlet pipe, and muffler inlet is connected by air inlet pipe with engine, and silencer goes out Mouth is arranged to air by escaping pipe, and the thermoelectric conversion device includes heat exchanger, electrothermal module group and heat abstractor, the heat Exchanger is polygonal barrel-like structure for the periphery that Heat Conduction Material is made, and the heat exchanger of barrel-like structure is erect mode and is enclosed within and disappears Sound device periphery is simultaneously fixedly linked with silencer, and electrothermal module group is made up of multiple thermoelectric conversion elements, multiple thermoelectric conversion elements Surroundings are evenly distributed on, the hot junction of thermoelectric conversion element is uniformly fitted with the polygonal exterior surface of heat exchanger, many Individual thermoelectric conversion element institute's generated energy is connected by wire and used to load or stored in energy-storage battery by after voltage transformation, The heat abstractor is uniformly fitted with the cold end of thermoelectric conversion element, for the cold end radiating to thermoelectric conversion element, in thermoelectricity Thermo-electric generation is formed between the cold end of switching device and hot junction.
2. a kind of tail gas thermoelectric conversion device on tractor according to claim 1, it is characterised in that:The heat is handed over Parallel operation internal diameter is bigger than silencer, and silencer periphery is provided with multiple fixing muscles, and heat exchanger is consolidated by way of being connected with fixing muscle It is scheduled on silencer periphery.
3. a kind of tail gas thermoelectric conversion device on tractor according to claim 1, it is characterised in that:The noise elimination Multiple thermal holes for conducting heat are offered on the barrel of device.
4. a kind of tail gas thermoelectric conversion device on tractor according to claim 1, it is characterised in that:The radiating Device includes radiating bottom plate and the fin being fixed on radiating bottom plate, and the radiating bottom plate is uniformly fitted in thermoelectric conversion element Cold end.
5. a kind of tail gas thermoelectric conversion device on tractor according to claim 4, it is characterised in that:The radiating Base plate and fin have multiple, and each fin one radiating bottom plate of correspondence is simultaneously bonded into an entirety, each radiating bottom plate pair A thermoelectric conversion element is answered, multiple radiating bottom plates and fin are evenly distributed on the periphery of heat exchanger, and are filled by fixed Put fixation.
6. a kind of tail gas thermoelectric conversion device on tractor according to claim 5, it is characterised in that:The fixation Device includes steel wire and the groove located at radiating bottom plate upper and lower ends horizontally set, and ditch on radiating bottom plate is passed through by with steel wire Multiple radiating bottom plates on same height outer surface on heat exchanger are tied up fixation by groove.
7. a kind of tail gas thermoelectric conversion device on tractor according to claim 6, it is characterised in that:The heat is handed over Multiple fixed dams are provided with parallel operation polygon surface different height, the fixed dam is used for heat exchanger polygon surface Radiating bottom plate and thermoelectric conversion element isolation at different height is fixed.
8. a kind of tail gas thermoelectric conversion device on tractor according to claim 1, it is characterised in that:Turn with thermoelectricity The heat-exchanger surface for changing device contacts is provided with thermostable heat-conductive material coating, the heat exchange not contacted with thermoelectric conversion element Device surface and other exposed regions are provided with insulation material layer.
9. a kind of tail gas thermoelectric conversion device on tractor according to claim 4, it is characterised in that:The radiating Base plate is provided with thermostable heat-conductive material coating with thermoelectric conversion element cold end contact surface.
10. a kind of tail gas thermoelectric conversion device on tractor according to claim 1 to 9 any one, its feature It is:The outer peripheral face of the heat exchanger is triangle, quadrangle, pentagon, hexagon, heptagon or octagon.
CN201710166962.8A 2017-03-20 2017-03-20 Exhaust heat-electricity conversion device for tractors Pending CN106703955A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710166962.8A CN106703955A (en) 2017-03-20 2017-03-20 Exhaust heat-electricity conversion device for tractors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710166962.8A CN106703955A (en) 2017-03-20 2017-03-20 Exhaust heat-electricity conversion device for tractors

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CN106703955A true CN106703955A (en) 2017-05-24

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017111688A1 (en) * 2017-05-30 2018-12-06 Amazonen-Werke H. Dreyer Gmbh & Co. Kg Agricultural machine

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101436838A (en) * 2008-12-19 2009-05-20 清华大学 Apparatus for thermo-electric generation using vehicle exhaust pipe
CN201277082Y (en) * 2008-11-03 2009-07-22 厦门大学 Thermo-electric generation type vehicle energy-saving emission-reducing device
CN203119809U (en) * 2013-02-08 2013-08-07 尚昱帆 Vehicle exhaust waste heat power generation device
CN105679301A (en) * 2016-03-30 2016-06-15 武汉理工大学 Detachable sectional type thermoelectric power generation heat exchanger and muffler combined device
CN106368774A (en) * 2016-09-08 2017-02-01 安徽工业大学 Flange plate heat exchange type automobile tail gas power generation device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201277082Y (en) * 2008-11-03 2009-07-22 厦门大学 Thermo-electric generation type vehicle energy-saving emission-reducing device
CN101436838A (en) * 2008-12-19 2009-05-20 清华大学 Apparatus for thermo-electric generation using vehicle exhaust pipe
CN203119809U (en) * 2013-02-08 2013-08-07 尚昱帆 Vehicle exhaust waste heat power generation device
CN105679301A (en) * 2016-03-30 2016-06-15 武汉理工大学 Detachable sectional type thermoelectric power generation heat exchanger and muffler combined device
CN106368774A (en) * 2016-09-08 2017-02-01 安徽工业大学 Flange plate heat exchange type automobile tail gas power generation device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017111688A1 (en) * 2017-05-30 2018-12-06 Amazonen-Werke H. Dreyer Gmbh & Co. Kg Agricultural machine

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