WO2016125201A1 - Véhicule industriel - Google Patents

Véhicule industriel Download PDF

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Publication number
WO2016125201A1
WO2016125201A1 PCT/JP2015/000447 JP2015000447W WO2016125201A1 WO 2016125201 A1 WO2016125201 A1 WO 2016125201A1 JP 2015000447 W JP2015000447 W JP 2015000447W WO 2016125201 A1 WO2016125201 A1 WO 2016125201A1
Authority
WO
WIPO (PCT)
Prior art keywords
engine
exhaust gas
radiator
fan
industrial vehicle
Prior art date
Application number
PCT/JP2015/000447
Other languages
English (en)
Japanese (ja)
Inventor
石田　裕之
Original Assignee
株式会社Kcm
日立建機株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 株式会社Kcm, 日立建機株式会社 filed Critical 株式会社Kcm
Priority to PCT/JP2015/000447 priority Critical patent/WO2016125201A1/fr
Publication of WO2016125201A1 publication Critical patent/WO2016125201A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K11/00—Arrangement in connection with cooling of propulsion units
    • B60K11/02—Arrangement in connection with cooling of propulsion units with liquid cooling
    • B60K11/04—Arrangement or mounting of radiators, radiator shutters, or radiator blinds
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P5/00—Pumping cooling-air or liquid coolants
    • F01P5/02—Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers
    • F01P5/06—Guiding or ducting air to, or from, ducted fans

Definitions

  • the present invention relates to an industrial vehicle such as a wheel loader, a hydraulic excavator, or a bulldozer.
  • an industrial vehicle having a machine room including an engine room and a ventilation room partitioned by a partition wall.
  • an engine is disposed in the engine chamber, and a radiator for cooling the engine and a fan for generating wind passing through the radiator are disposed in the ventilation chamber.
  • Patent Document 1 discloses an industrial vehicle configured to ventilate an engine room using a suction force of a fan. Specifically, in this industrial vehicle, a ventilation duct having one end opened in the engine room and the other end communicating with the outer peripheral side of the fan is provided.
  • the exhaust gas discharged from the engine is guided to the outside of the engine room through the exhaust gas path.
  • a part of the exhaust gas path is constituted by devices such as an exhaust turbine and an exhaust gas treatment device, for example. Among such equipment and accessories attached to it, there are sites where it is desirable or necessary to keep the temperature low.
  • this invention aims at providing the industrial vehicle which can reduce the temperature of the apparatus which comprises a part of exhaust gas path, or its accessory intensively, without reducing the thermal radiation efficiency of a radiator. To do.
  • an industrial vehicle of the present invention includes a machine room including an engine room and a ventilation room partitioned by a partition, an engine disposed in the engine room, and exhaust gas discharged from the engine.
  • An exhaust gas path that leads to the outside of the engine room, a radiator that is arranged in the ventilation chamber and in which a coolant is circulated between the engine, and a wind that passes through the radiator that is arranged in the ventilation chamber are generated.
  • a fan, a duct extending over the partition, an inlet for taking in air that has passed through the radiator, and air that has flowed through the duct are attached to a device that forms part of the exhaust gas path or the device And a duct having an outlet that jets toward the appendage.
  • the air after passing a radiator is injected toward the apparatus which comprises some exhaust gas paths, or its accessory, the temperature of the apparatus or accessory can be reduced intensively. . Even if the temperature of the air after passing through the radiator is higher than the normal temperature, it is effective because it is sufficiently lower than the target temperature of the temperature reduction target portion. In addition, by using the air that has passed through the radiator, the above-described effects can be obtained without reducing the heat dissipation efficiency of the radiator.
  • the industrial vehicle further includes an exhaust gas treatment device including a selective catalyst reduction unit that constitutes a part of the exhaust gas path, and an electrical component unit attached to the exhaust gas treatment device, and the outlet of the duct May inject air flowing through the duct toward the electrical component unit.
  • an exhaust gas treatment device including a selective catalyst reduction unit that constitutes a part of the exhaust gas path
  • an electrical component unit attached to the exhaust gas treatment device, and the outlet of the duct May inject air flowing through the duct toward the electrical component unit.
  • the ventilation chamber is located behind the engine compartment, and the fan is arranged behind the radiator. A wind passing through the radiator may be generated.
  • the inflow port may be opened rearward, and the industrial vehicle may further include a wind direction changing member that guides air sent from the fan to the inflow port.
  • the ventilation chamber is not filled with air after passing through the radiator, and, for example, the urea water pipe laid in the ventilation chamber can be kept at a low temperature.
  • the fan may be a diffusion type that sends air not only to the rear but also to the surroundings, and the wind direction changing member may have a box shape that opens in a direction opposite to the rotation direction of the fan. According to this configuration, air can be caused to flow into the wind direction changing member using the flow in the rotational direction of the fan.
  • the wind direction changing member can be arranged at a position that does not overlap the fan, and a smart layout can be realized.
  • the fan is surrounded by a shroud, and a rectangular frame-shaped blocking member that closes a gap between the shroud and the wall surface of the ventilation chamber is disposed, and the wind direction changing member is You may arrange
  • the present invention it is possible to intensively reduce the temperature of the equipment that constitutes a part of the exhaust gas path or its accessories without reducing the heat dissipation efficiency of the radiator.
  • FIG. 4 is a cross-sectional view taken along the line IV-IV in FIGS. 2 and 3. It is a side view which shows the internal structure of the machine room of the industrial vehicle of a modification. It is a side view which shows the internal structure of the machine room of the industrial vehicle of another modification.
  • FIG. 1 shows an industrial vehicle 1 according to an embodiment of the present invention.
  • the industrial vehicle 1 of this embodiment is a wheel loader.
  • the industrial vehicle of the present invention is not limited to a wheel loader, and may be another industrial vehicle such as a hydraulic excavator or a bulldozer.
  • the industrial vehicle 1 includes a cab 12 provided on the vehicle body 11.
  • the front direction of the cab 12 and the opposite direction are referred to as the front-rear direction.
  • the vehicle body 11 extends in the front-rear direction.
  • the vehicle body 11 is provided with a front wheel 13 in front of the cab 12 and a rear wheel 14 behind the cab 12.
  • a machine room 2 is provided on the vehicle body 11 behind the cab 12.
  • a bucket 17 is attached to the front portion of the vehicle body 11 via a boom 16.
  • the boom 16 and the bucket 17 are each operated by a hydraulic cylinder, and hydraulic oil is supplied to these hydraulic cylinders from a hydraulic pump (not shown) driven by an engine 31 described later.
  • the machine room 2 is a substantially rectangular parallelepiped room that is sandwiched between the rear wheels 14 and has a relatively narrow width and extends in the front-rear direction. More specifically, the machine room 2 includes a front engine room 21 and a rear ventilation room 22 as shown in FIGS. 2 and 3. The engine chamber 21 and the ventilation chamber 22 are partitioned by a partition wall 23 in the front-rear direction.
  • An engine 31 is disposed in the engine chamber 21, and a radiator 32 for cooling the engine is disposed in the ventilation chamber 22. That is, a coolant is circulated between the engine 31 and the radiator 32.
  • the fan 33 which is disposed behind the radiator 32, generates wind passing through the radiator 32.
  • the fan 33 generates wind passing through the radiator 32 from the front to the rear.
  • the ventilation chamber 22 is provided with a first ventilation port 18 made up of a large number of holes on the top wall and three wall surfaces on the left and right sides, and a second ventilation port 19 made up of a number of holes on the rear surface. ing. Then, with the operation of the fan 33, wind flows from the first vent 18 toward the second vent 19.
  • the 1st ventilation port 18 may be provided only in either one of the upper surface of the ventilation chamber 2B, or both right and left side surfaces.
  • the second vent hole 19 may be composed of rectangular openings formed between a plurality of horizontal bars and arranged vertically.
  • the partition wall 23 is bent in a substantially crank shape in a side view.
  • the partition wall 23 may be flat in the vertical direction.
  • the partition wall 23 has a vertically extending lower portion facing the rear surface of the engine 3, an intermediate portion extending forward from the upper end portion of the lower portion and covering the rear portion of the engine 3 from above, and a distal end of the intermediate portion. Has an upper part that rises from.
  • the engine chamber 21 protrudes toward the ventilation chamber 22 below the machine chamber 2
  • the ventilation chamber 22 protrudes toward the engine chamber 21 above the machine chamber 2.
  • an exhaust gas path 4 that guides the exhaust gas discharged from the engine 31 to the outside of the engine room 21 is provided.
  • the downstream portion of the exhaust gas path 4 is configured by the exhaust gas processing device 5, and the exhaust gas processing device 5 is connected to the engine 31 by the introduction pipe 41.
  • the exhaust gas treatment device 5 is disposed above the engine 31 and is supported by a frame (not shown).
  • the engine chamber 21 is provided with a tail pipe 15 for discharging the exhaust gas treated by the exhaust gas treatment device 5 to the outside at the rear portion of the upper surface (substantially the center of the machine chamber 2).
  • the exhaust gas treatment device 5 performs selective catalytic reduction (SCR) using urea water as a reducing agent in order to reduce NO x in the exhaust gas. More specifically, the exhaust gas treatment device 5 includes a pretreatment unit 51 and an SCR unit 53 that are arranged in parallel to each other.
  • the preprocessing unit 51 and the SCR unit 53 extend in the front-rear direction and are aligned in the vehicle width direction.
  • the preprocessing unit 51 and the SCR unit 53 have a cylindrical shape.
  • the upper part of the partition wall 23 described above faces the rear surfaces of the pretreatment unit 51 and the SCR unit 53.
  • the preprocessing unit 51 and the SCR unit 53 extend in the vehicle width direction and may be arranged in the front-rear direction.
  • the pretreatment unit 51 and the SCR unit 53 extend in the vehicle width direction, either the pretreatment unit 51 or the SCR unit 53 may be disposed between the engine 31 and the lower part of the partition wall 23. .
  • the pretreatment unit 51 accommodates a diesel oxidation catalyst (DOC: Diesel Oxidation Catalyst). DOC reduces carbon monoxide (CO) and hydrocarbons (HC) in the exhaust gas.
  • the preprocessing unit 51 may have a diesel particulate filter (DPF: Diesel Particulate Filter) in addition to the DOC. Alternatively, the preprocessing unit 51 may be a single DPF.
  • the introduction pipe 41 described above is connected to the front end portion of the pretreatment unit 51, and the rear end portion of the pretreatment unit 51 is connected to the front end portion of the SCR unit by a connection pipe 52.
  • a urea water injection device (for example, a dosing module) 57 is attached to the connection pipe 52.
  • the urea water injection device 57 injects urea water into the exhaust gas flowing through the connection pipe 43.
  • the urea water injection device 57 is supplied with urea water from a urea water tank (not shown).
  • the urea water pipe connecting the urea water tank and the urea water injection device 47 may be partially laid in the ventilation chamber 22 and penetrate the partition wall 23.
  • the urea water injection device 57 is equipped with an electrical component that adjusts the urea spray amount.
  • the urea water injection device 57 includes a connector connected to a controller for spray amount control.
  • the urea water injection device 57 is also an electrical component unit (attachment) attached to the exhaust gas treatment device 5.
  • SCR unit 53 reacts urea water injected into exhaust gas with exhaust gas.
  • the rear end of the SCR unit 42 is connected to a discharge pipe 54 that extends upward into the tail pipe 15 described above.
  • each of the electric component unit 55 includes a NO X sensor temperature sensor and with connectors with connector.
  • a configuration for intensively reducing the temperatures of the urea water injection device 57 and the electrical component units 55 and 56 is employed. Specifically, a duct 6 extending over the partition wall 23 is provided in the machine room 2.
  • the duct 6 has one inflow port 6a that takes in the air that has passed through the radiator 32, and two outflow ports 6b and 6c that inject the air that has flowed through the duct 6 toward the urea water injection device 57 and the electrical component units 55 and 56.
  • the duct 6 includes one main flow portion 61 extending in the front-rear direction from a position behind the radiator 32 and two branch portions 62 and 63 branched from the downstream end of the main flow portion 61. More specifically, one outlet 6 b injects air toward the electrical component unit 55 and the urea water injection device 57 attached to the pretreatment unit 51, and the other outlet 6 c is attached to the SCR unit 53. Air is jetted toward the electrical component unit 56.
  • the duct 6 is constituted by piping.
  • the duct 6 may be configured by a member that forms a flow path between the duct 6 and the cover that configures the machine room 2.
  • the junction between the main flow portion 61 and the branch flow portions 62 and 63 is located in the ventilation chamber 22 and the branch flow portions 62 and 63 penetrate the upper part of the partition wall 23.
  • a joint portion with the branch portions 62 and 63 may be located in the engine chamber 21, and the main flow portion 61 may penetrate the upper portion of the partition wall 23.
  • the fan 33 described above is surrounded by the shroud 34.
  • a diffusion type fan that sends air not only to the rear but also to the surroundings is used.
  • the rectangular frame-shaped closing member 7 is disposed around the shroud 34 so that the air sent out from the fan 33 does not flow forward from the periphery of the shroud 34.
  • the closing member 7 is for closing gaps between the four walls of the upper surface, the left and right side surfaces, and the bottom surface of the ventilation chamber 44 and the shroud 34.
  • the closing member 7 includes an upper plate 71 disposed above the shroud 34, a lower plate 72 disposed below the shroud 34, a left plate 73 disposed on the left side of the shroud 34, and a shroud.
  • 34 includes a right plate 74 arranged on the right side of 34. These plates 71 to 74 are slightly tilted so that the outer edge is located behind the inner edge.
  • the fan 33 rotates counterclockwise when looking forward from behind. For this reason, the air sent out from the fan 33 to the surroundings forms a counterclockwise swirling flow.
  • the inlet 6a of the duct 6 described above is open toward the rear at the top of the right plate 74, which is one corner of the closing member 7.
  • a wind direction changing member 8 is disposed on the upper portion of the right plate 74. The air direction changing member 8 is configured to guide the air sent out from the fan 33 to the surroundings to the inflow port 6a.
  • the wind direction changing member 8 has a box shape that opens downward. That is, the opening direction of the wind direction changing member 8 is opposite to the rotation direction of the fan 33. For this reason, the swirl flow formed by the air sent out from the fan 33 to the surroundings flows into the wind direction changing member 8 and then flows into the inflow port 6a.
  • the wind direction changing member 8 may be disposed at other corners of the closing member 7 (upper part of the left plate 73, lower part of the left plate 73, lower part of the right plate 74). For example, when the wind direction changing member 8 is arranged on the upper portion of the left plate 73, the wind direction changing member 8 may be opened rightward so as to open in the direction opposite to the rotation direction of the fan 33.
  • the air after passing through the radiator is injected toward the urea water injection device 57 and the electrical component units 55 and 56 attached to the exhaust gas treatment device 5,
  • the temperatures of the urea water injection device 57 and the electrical component units 55 and 56 can be reduced intensively. Even if the temperature of the air after passing through the radiator is higher than the normal temperature, it is effective because it is sufficiently lower than the target temperature of the temperature reduction target part (in this embodiment, the urea water injection device 57 and the electrical component units 55 and 56). It is.
  • the air after passing through the radiator the above effect can be obtained without reducing the heat dissipation efficiency of the radiator 32.
  • components having a low endurance temperature in the urea water injection device 57 and the electrical component units 55 and 56 can be intensively cooled.
  • the wind direction changing member 8 since the wind direction changing member 8 is arranged at one corner of the closing member 7, the wind direction changing member 8 can be arranged in a space where stagnation is likely to occur. Thereby, an efficient air flow can be formed.
  • the wind direction changing member 8 it is also possible to arrange the wind direction changing member 8 at, for example, the central portion of any of the plates 71 to 74 constituting the closing member 7.
  • a linear flow type fan that sends air only backward may be used as the fan 33.
  • a bent pipe integrally formed with the duct 6 may be used as the wind direction changing member 8.
  • the fan 33 is a diffusion type and the wind direction changing member 8 that opens in the direction opposite to the rotation direction of the fan 33 is provided as in the above embodiment, the flow in the rotation direction of the fan 33 is used, Air can be caused to flow into the wind direction changing member 8.
  • the wind direction changing member 8 can be disposed at a position that does not overlap the fan 33, and a smart layout can be realized.
  • the fan 33 may generate a wind passing through the radiator 32 from the rear to the front.
  • the duct 6 may be configured such that the inflow port 6 a opens toward the radiator 32 in front of the radiator 32.
  • the inside of the ventilation chamber 22 is not filled with the air after passing through the radiator. Therefore, for example, the urea water pipe laid in the ventilation chamber 22 can be kept at a low temperature.
  • the duct 6 does not necessarily have both the outlets 6b and 6c, and may have only one of them.
  • the exhaust gas treatment device 5 does not necessarily need to execute SCR, and may be a simple filter unit.
  • the outlet of the duct 6 does not necessarily have to inject air toward the electrical component unit attached to the exhaust gas treatment device 5.
  • the outlet of the duct 6 may inject air toward the exhaust turbine.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Component Parts Of Construction Machinery (AREA)

Abstract

L'invention concerne un véhicule industriel, équipé des éléments suivants : une salle des machines qui contient une chambre de moteur et une chambre de ventilation séparées l'une de l'autre par une paroi de séparation; un moteur agencé dans la chambre de moteur; un passage de gaz d'échappement qui guide les gaz d'échappement évacués par le moteur vers l'extérieur de la chambre de moteur; un radiateur agencé dans la chambre de ventilation et, entre le radiateur et le moteur, un agent de refroidissement qui est amené à circuler; un ventilateur qui est agencé dans la chambre de ventilation et produit un courant d'air qui traverse le radiateur; et une conduite s'étendant à travers la paroi de séparation et ayant un orifice d'admission qui aspire l'air qui a traversé le radiateur et un orifice d'évacuation qui pulvérise l'air s'écoulant à travers la conduite dans la direction d'une machine, formant une partie du passage de gaz d'échappement ou un accessoire fixé à ladite machine.
PCT/JP2015/000447 2015-02-02 2015-02-02 Véhicule industriel WO2016125201A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2015/000447 WO2016125201A1 (fr) 2015-02-02 2015-02-02 Véhicule industriel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2015/000447 WO2016125201A1 (fr) 2015-02-02 2015-02-02 Véhicule industriel

Publications (1)

Publication Number Publication Date
WO2016125201A1 true WO2016125201A1 (fr) 2016-08-11

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PCT/JP2015/000447 WO2016125201A1 (fr) 2015-02-02 2015-02-02 Véhicule industriel

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109184890A (zh) * 2018-08-31 2019-01-11 广西柳工机械股份有限公司 装载机发动机后处理系统
CN111542687A (zh) * 2018-01-29 2020-08-14 株式会社丰田自动织机 废气净化装置
JP7459714B2 (ja) 2019-07-31 2024-04-02 コベルコ建機株式会社 建設機械の駆動装置及び建設機械の排気ガス処理装置を支持するための架台

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001227003A (ja) * 2000-02-18 2001-08-24 Hitachi Constr Mach Co Ltd 建設機械の冷却装置
JP2007283801A (ja) * 2006-04-12 2007-11-01 Hitachi Constr Mach Co Ltd 建設機械
JP5607279B1 (ja) * 2014-03-31 2014-10-15 株式会社小松製作所 作業車両
JP5635695B1 (ja) * 2013-03-26 2014-12-03 株式会社小松製作所 作業車両、及びホイールローダ

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001227003A (ja) * 2000-02-18 2001-08-24 Hitachi Constr Mach Co Ltd 建設機械の冷却装置
JP2007283801A (ja) * 2006-04-12 2007-11-01 Hitachi Constr Mach Co Ltd 建設機械
JP5635695B1 (ja) * 2013-03-26 2014-12-03 株式会社小松製作所 作業車両、及びホイールローダ
JP5607279B1 (ja) * 2014-03-31 2014-10-15 株式会社小松製作所 作業車両

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111542687A (zh) * 2018-01-29 2020-08-14 株式会社丰田自动织机 废气净化装置
CN109184890A (zh) * 2018-08-31 2019-01-11 广西柳工机械股份有限公司 装载机发动机后处理系统
CN109184890B (zh) * 2018-08-31 2020-07-21 广西柳工机械股份有限公司 装载机发动机后处理系统
JP7459714B2 (ja) 2019-07-31 2024-04-02 コベルコ建機株式会社 建設機械の駆動装置及び建設機械の排気ガス処理装置を支持するための架台

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