WO2015079749A1 - 作業車両 - Google Patents
作業車両 Download PDFInfo
- Publication number
- WO2015079749A1 WO2015079749A1 PCT/JP2014/071638 JP2014071638W WO2015079749A1 WO 2015079749 A1 WO2015079749 A1 WO 2015079749A1 JP 2014071638 W JP2014071638 W JP 2014071638W WO 2015079749 A1 WO2015079749 A1 WO 2015079749A1
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- WO
- WIPO (PCT)
- Prior art keywords
- guide member
- engine
- work vehicle
- extending
- opening
- Prior art date
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Classifications
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- 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
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- 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
- E02F9/08—Superstructures; Supports for superstructures
- E02F9/0858—Arrangement of component parts installed on superstructures not otherwise provided for, e.g. electric components, fenders, air-conditioning units
- E02F9/0883—Tanks, e.g. oil tank, urea tank, fuel tank
-
- 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
- B60K13/00—Arrangement in connection with combustion air intake or gas exhaust of propulsion units
- B60K13/04—Arrangement in connection with combustion air intake or gas exhaust of propulsion units concerning exhaust
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/283—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets with a single arm pivoted directly on the chassis
-
- 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
- E02F9/08—Superstructures; Supports for superstructures
- E02F9/0841—Articulated frame, i.e. having at least one pivot point between two travelling gear units
-
- 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
- E02F9/08—Superstructures; Supports for superstructures
- E02F9/0858—Arrangement of component parts installed on superstructures not otherwise provided for, e.g. electric components, fenders, air-conditioning units
- E02F9/0866—Engine compartment, e.g. heat exchangers, exhaust filters, cooling devices, silencers, mufflers, position of hydraulic pumps in the engine compartment
-
- 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
- E02F9/08—Superstructures; Supports for superstructures
- E02F9/0858—Arrangement of component parts installed on superstructures not otherwise provided for, e.g. electric components, fenders, air-conditioning units
- E02F9/0891—Lids or bonnets or doors or details thereof
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- 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
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/009—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series
-
- 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
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
-
- 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
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2066—Selective catalytic reduction [SCR]
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2200/00—Type of vehicle
- B60Y2200/40—Special vehicles
- B60Y2200/41—Construction vehicles, e.g. graders, excavators
- B60Y2200/415—Wheel loaders
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/34—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets with bucket-arms, i.e. a pair of arms, e.g. manufacturing processes, form, geometry, material of bucket-arms directly pivoted on the frames of tractors or self-propelled machines
- E02F3/3405—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets with bucket-arms, i.e. a pair of arms, e.g. manufacturing processes, form, geometry, material of bucket-arms directly pivoted on the frames of tractors or self-propelled machines and comprising an additional linkage mechanism
- E02F3/3411—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets with bucket-arms, i.e. a pair of arms, e.g. manufacturing processes, form, geometry, material of bucket-arms directly pivoted on the frames of tractors or self-propelled machines and comprising an additional linkage mechanism of the Z-type
-
- 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
- F01N2260/00—Exhaust treating devices having provisions not otherwise provided for
- F01N2260/02—Exhaust treating devices having provisions not otherwise provided for for cooling the device
- F01N2260/022—Exhaust treating devices having provisions not otherwise provided for for cooling the device using air
-
- 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
- F01N2590/00—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines
- F01N2590/08—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines for heavy duty applications, e.g. trucks, buses, tractors, locomotives
-
- 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
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
-
- 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
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/14—Arrangements for the supply of substances, e.g. conduits
- F01N2610/1453—Sprayers or atomisers; Arrangement thereof in the exhaust apparatus
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Definitions
- the present invention relates to a work vehicle.
- Work vehicle has an engine room.
- An engine is accommodated in the engine chamber.
- Various devices other than the engine may be accommodated in the engine compartment.
- an exhaust gas aftertreatment device for treating exhaust gas from an engine is accommodated in an engine room.
- positioned in an engine compartment is exposed to the hot air etc. in an engine compartment.
- An object of the present invention is to suppress exposure of a member to be cooled arranged in an engine compartment to hot air.
- a work vehicle includes an engine, an engine room, a member to be cooled, a top plate, and a first guide member.
- the engine room houses the engine.
- the member to be cooled is disposed in the engine compartment.
- the top plate has a ventilation part.
- the ventilation part is arranged at a position away from the member to be cooled in the horizontal direction.
- the top plate defines the upper surface of the engine compartment.
- the first guide member has a notch or a first opening above the member to be cooled. The first guide member extends from the notch or the first opening to the vent and covers the vent from below.
- the ventilation portion is not located directly above the member to be cooled, but is disposed at a position away from the member to be cooled in the horizontal direction. For this reason, rainwater or the like can be prevented from falling on the member to be cooled via the ventilation portion.
- the work vehicle further includes a second guide member.
- the second guide member extends in the up-down direction between the notch or the first opening and the member to be cooled. According to this configuration, when hot air is present around the member to be cooled, the hot air is guided to the notch or the first opening by the second guide member.
- the second guide member and the side surface of the engine chamber constitute a flow path extending in the vertical direction above the member to be cooled. According to this configuration, the hot air existing around the member to be cooled can be efficiently raised by the chimney effect using the flow path extending in the vertical direction.
- the second guide member has a semi-cylindrical shape.
- the first guide member further includes a return portion.
- the return portion extends upward at the periphery of the notch or the first opening. According to this configuration, it is possible to prevent the rainwater adhering to the first guide member from dropping to the member to be cooled through the notch or the first opening by the return portion.
- the first guide member has a plate shape and is attached to the top plate.
- the first guide member further has an extending portion extending to the outside of the engine chamber. According to this configuration, the water received by the first guide member can be drained to the outside of the engine compartment via the extending portion.
- the extending part extends to the rear of the engine compartment.
- the first guide member is inclined downward toward the rear. According to this configuration, the water received by the first guide member can be discharged to the rear of the engine compartment.
- the extension part has a first extension part and a second extension part.
- the first extending portion extends rearward along the right side surface of the engine compartment.
- the second extending portion extends rearward along the left side surface of the engine compartment.
- the top plate has a second opening extending in the vehicle width direction.
- the first extending portion is disposed on the right side with respect to the second opening in a plan view.
- the second extending portion is disposed on the left side with respect to the second opening in plan view.
- the second opening is covered by a removable cover. According to this structure, it becomes possible to maintain each apparatus accommodated in the engine compartment via the second opening by removing the cover.
- the upper end portion of the second guide member is attached to the first guide member.
- the work vehicle further includes a selective catalyst reduction device and a connecting pipe.
- the selective catalyst reduction device is configured to process exhaust gas from the engine.
- the connecting pipe is connected to the selective catalyst reduction device.
- the cooling target member described above is, for example, an injection device.
- the injection device is configured to inject a reducing agent into the connecting pipe.
- the member to be cooled arranged in the engine compartment can be prevented from being exposed to hot air.
- the perspective view of a wheel loader Sectional drawing of a rear vehicle body.
- the top view of a rear vehicle body The perspective view of an exhaust-gas post-processing apparatus.
- Sectional drawing of the rear vehicle body seen from the back.
- the perspective view of the 1st and 2nd guide member The perspective view of the 1st and 2nd guide member.
- Sectional drawing of a rear vehicle body The side view of the 1st and 2nd guide member.
- the perspective view of the 2nd guide member The side sectional view of the rear body in modification 5.
- FIG. 1 is an external perspective view of the wheel loader 100 as seen from the left rear.
- “right”, “left”, “upper”, and “lower” indicate directions with reference to the state of looking forward from the cab.
- Vehicle width direction is synonymous with “left-right direction”.
- the “front-rear direction” means the front-rear direction of the vehicle body.
- the wheel loader 100 includes a work machine 110, a vehicle body 120, a front wheel 130, and a rear wheel 140.
- the wheel loader 100 can be self-propelled when the front wheel 130 and the rear wheel 140 are rotationally driven, and performs a desired work using the work machine 110.
- the work machine 110 is a mechanism that is driven by hydraulic oil pressurized by a hydraulic pump, and is disposed in front of the vehicle body 120.
- the work machine 110 includes a bucket 111, a boom (not shown), a lift cylinder (not shown), and a bucket cylinder 112.
- Bucket 111 is attached to the tip of the boom.
- the boom is a member for lifting the bucket 111.
- the boom is attached to the front portion of a front vehicle body 120a described later.
- the lift cylinder drives the boom by pressure oil discharged from the work machine pump.
- Bucket cylinder 112 drives bucket 111 with pressure oil discharged from a work machine pump.
- the vehicle body 120 has a front vehicle body 120a and a rear vehicle body 120b.
- the front vehicle body 120a and the rear vehicle body 120b are connected to each other so as to be swingable in the left-right direction.
- a work machine 110 and a front wheel 130 are provided on the front vehicle body 120a.
- a rear wheel 140 is provided on the rear vehicle body 120b.
- the rear vehicle body 120 b includes a vehicle body frame 150, a cab 160, an engine room 2, and a cooling room 3.
- the vehicle body frame 150 is a frame constituting the rear vehicle body 120b.
- the body frame 150 supports the rear wheel 140, the cab 160, the hydraulic oil tank 170, the engine 11 (see FIG. 2), and the like.
- the cab 160 is provided with a cab inside and various operation members and operation panels.
- a hydraulic oil tank 170 is disposed behind the cab 160.
- a plurality of hydraulic pumps (not shown) are arranged below the hydraulic oil tank 170.
- the working oil tank 170 stores working oil for driving the working machine 110 and the like, and supplies the working oil to the working machine 110 and the like by a hydraulic pump.
- FIG. 2 is a side sectional view of the rear vehicle body 120b as viewed from the left side.
- the engine compartment 2 is defined by a vehicle body cover 8.
- the engine room 2 is disposed behind the cab 160.
- the hydraulic oil tank 170 is located between the cab 160 and the engine compartment 2.
- the vehicle body cover 8 has a top plate 81, a first side plate 82, and a second side plate 83 (see FIG. 2).
- the top plate 81 defines the upper surface of the engine compartment 2.
- the first and second side plates 82 and 83 define the side surface of the engine compartment 2.
- the first side plate 82 defines the left side surface of the engine compartment 2
- the second side plate 83 defines the right side surface of the engine compartment 2.
- FIG. 3 is a plan view of the rear vehicle body.
- the top plate 81 has at least one ventilation part 81a.
- it has the some ventilation part 81a.
- Each ventilation part 81a is arrange
- the cooling target member 134 in this embodiment means the injection apparatus 134 mentioned later.
- Each ventilation part 81a is comprised by the some through-hole, for example.
- the plurality of through holes constituting each ventilation part 81a penetrates the top plate 81 in the vertical direction.
- Each ventilation part 81a is arrange
- the part 81a is arranged.
- the first guide member 4 is indicated by a broken line so that the positional relationship between each ventilation portion 81 a and the first guide member 4 described later can be understood.
- the top plate 81 has an opening 81b.
- the opening 81b is arranged behind each ventilation part 81a.
- the opening 81b extends in the vehicle width direction. Specifically, the opening 81b is longer in the vehicle width direction than in the front-rear direction.
- the opening part 81b of the top plate 81 is equivalent to the 2nd opening part of this invention.
- the opening 81b is covered with a cover 81c.
- the cover 81c is detachably attached to the top plate 81.
- the cover 81c is attached to the top plate 81 by a fastening member such as a bolt.
- an engine 11 and an exhaust gas aftertreatment device 13 are accommodated in the engine chamber 2.
- the engine 11 is a so-called vertical engine that is disposed in the lower part of the engine compartment 2 and has a crankshaft extending in the front-rear direction.
- the exhaust gas aftertreatment device 13 is arranged at the upper part of the engine room 2. That is, the exhaust gas aftertreatment device 13 is disposed above the engine 11.
- FIG. 4 is a perspective view of the exhaust gas aftertreatment device 13 as viewed from the left rear.
- the exhaust gas aftertreatment device 13 includes a diesel particulate filter device 131, a connecting pipe 132, and a selective catalyst reduction device 133 in the order in which the exhaust gas flows.
- An injection device 134 is attached to the connection pipe 132.
- the injection device 134 corresponds to the cooling target member of the present invention.
- the diesel particulate filter device 131 is connected to the engine 11 via a pipe 135.
- the diesel particulate filter device 131 is a device that processes exhaust gas discharged from the engine 11.
- the diesel particulate filter device 131 is a device that collects particulate matter such as soot in the exhaust gas discharged from the engine 11 using a filter.
- the diesel particulate filter device 131 incinerates the collected particulate matter with a heater attached to the filter.
- the diesel particulate filter device 131 is supported by a support member 151 attached to the vehicle body frame 150.
- the connecting pipe 132 is connected to the selective catalyst reduction device 133. Specifically, the connection pipe 132 connects the diesel particulate filter device 131 and the selective catalyst reduction device 133.
- the connecting tube 132 is formed in an S shape as a whole, and includes a first bent portion 132a, a straight portion 132b, and a second bent portion 132c.
- the first bent portion 132 a is connected to the exhaust gas outlet 131 a of the diesel particulate filter device 131.
- the second bent portion 132 c is connected to the exhaust gas inlet 133 a of the selective catalyst reduction device 133.
- the straight portion 132b extends between the first bent portion 132a and the second bent portion 132c.
- the injection device 134 is attached to the first bent portion 132a.
- the injection device 134 is a device that injects a urea aqueous solution into the connection pipe 132.
- the urea aqueous solution is sucked up by a pump (not shown) from a urea aqueous solution tank (not shown) and supplied to the injection device 134 via a pipe (not shown).
- the urea aqueous solution injected into the connecting pipe 132 is hydrolyzed by the heat of the exhaust gas to become ammonia. This ammonia is supplied to the selective catalytic reduction device 133 through the connecting pipe 132 together with the exhaust gas.
- the selective catalyst reduction device 133 is a device that uses the above-mentioned ammonia as a reducing agent to reduce and purify nitrogen oxides in the exhaust gas.
- the selective catalyst reduction device 133 is supported by the support member 151 in the same manner as the diesel particulate filter device 131.
- the diesel particulate filter device 131 and the selective catalyst reduction device 133 are arranged in parallel. Specifically, the diesel particulate filter device 131 and the selective catalyst reduction device 133 are both substantially cylindrical. The diesel particulate filter device 131 and the selective catalyst reduction device 133 are arranged so that their central axes extend substantially parallel to each other in the vehicle width direction. Further, the straight portion 132b of the connecting pipe 132 is also substantially cylindrical, and the central axis extends in the vehicle width direction. That is, the central axis of the straight portion 132b of the connecting pipe 132 is disposed substantially parallel to the central axes of the diesel particulate filter device 131 and the selective catalyst reduction device 133.
- diesel particulate filter device 131, the selective catalyst reduction device 133, and the straight portion 132b may not be arranged in parallel to each other. Further, the central axes of the diesel particulate filter device 131, the selective catalyst reduction device 133, and the straight portion 132b may not extend in the vehicle width direction.
- the exhaust pipe 136 is a pipe for discharging the exhaust gas processed by the exhaust gas post-processing device 13 to the outside. Specifically, the exhaust pipe 136 is connected to the selective catalyst reduction device 133 and discharges the exhaust gas processed by the selective catalyst reduction device 133 to the outside.
- the cooling chamber 3 is disposed behind the engine chamber 2.
- the engine chamber 2 and the cooling chamber 3 are partitioned by a partition wall 9.
- the partition wall 9 has a communication port 91.
- the communication port 91 communicates the engine chamber 2 and the cooling chamber 3.
- the cooling chamber 3 is defined by the vehicle body cover 8, similarly to the engine chamber 2. Specifically, the upper surface of the cooling chamber 3 is defined by a top plate 81, and the side surface of the cooling chamber 3 is defined by first and second side plates 82 and 83.
- the front part of the top plate 81 defines the upper surface of the engine chamber 2, and the rear part of the top plate 81 defines the upper surface of the cooling chamber 3.
- the front portions of the first and second side plates 82 and 83 define the side surfaces of the engine chamber 2, and the rear portions of the first and second side plates 82 and 83 define the side surfaces of the cooling chamber 3.
- a radiator 32 and a cooling fan 31 are accommodated.
- the radiator 32 cools the cooling water of the engine 11.
- the cooling fan 31 rotates so as to discharge the air in the cooling chamber 3 to the outside of the cooling chamber 3.
- the cooling fan 31 rotates so as to discharge the air in the cooling chamber 3 to the outside of the cooling chamber 3 through the grill 33. That is, the cooling fan 31 generates an airflow that goes backward.
- the front side of the cooling fan 31 is the intake side of the cooling fan 31.
- the cooling fan 31 is disposed behind the radiator 32.
- the grill 33 defines the rear surface of the cooling chamber 3.
- the cooling fan 31 When the cooling fan 31 is operating, the air in the engine chamber 2 is discharged to the cooling chamber 3 through the communication port 91 of the partition wall 9. As a result, hot air in the engine chamber 2 is discharged to the cooling chamber 3. Further, outside air flows into the engine compartment 2 through the ventilation portion 81a and the like.
- FIG. 5 is a cross-sectional view of the rear vehicle body 120b as viewed from the rear.
- the wheel loader 100 further includes a first guide member 4 and a second guide member 5.
- the first guide member 4 and the second guide member 5 are integrally formed.
- the 1st guide member 4 and the 2nd guide member 5 do not need to be formed integrally.
- the first guide member 4 and the second guide member 5 are configured to discharge hot air around the injection device 134 to the outside.
- FIG. 6 is a perspective view of the first and second guide members 4 and 5 as viewed from the upper left
- FIG. 7 is a perspective view of the first and second guide members 4 and 5 as viewed from the lower left.
- the first guide member 4 has a guide main body 41, a first return portion 42, and an extending portion 43.
- the first return portion 42 corresponds to the return portion of the present invention.
- the extending part 43 has a first extending part 43a and a second extending part 43b.
- the guide body 41 is configured to guide the air above the injection device 134 to at least one vent 81a.
- the guide main body 41 constitutes the first flow path 40.
- the first flow path 40 is configured to guide the air above the injection device 134 to at least one ventilation portion 81a.
- the guide main body 41 is configured in a plate shape.
- the guide main body 41 is attached to the top plate 81 by, for example, a mounting bracket.
- FIG. 8 is a cross-sectional view of the rear vehicle body 120b as viewed from the left.
- the guide main body 41 is disposed along the top plate 81.
- the guide body 41 constitutes the first flow path 40 in cooperation with the top plate 81. That is, the first flow path 40 is configured between the guide main body 41 and the top plate 81. Hot air is discharged through the first flow path 40.
- the 1st flow path 40 inclines below toward back in the front-back direction. For this reason, when water exists in the 1st flow path 40, the water flows back.
- the guide main body 41 is disposed so as to cover each ventilation part 81a from below. Specifically, the guide main body 41 is disposed around the exhaust pipe 136 in a plan view. The guide main body 41 is configured to receive water that enters the engine compartment 2 from each ventilation portion 81a.
- the guide main body 41 has a notch 41a.
- the notch 41 a is formed by notching the guide main body 41.
- the guide main body 41 extends from the notch 41a to each ventilation part 81a.
- the notch 41a is disposed at a position where hot air rising from the periphery of the injection device 134 passes. That is, the notch 41a is disposed above the injection device 134. Specifically, the notch 41a is disposed directly above the injection device 134.
- the 1st return part 42 is arrange
- the first guide member 4 is configured to receive water entering the engine compartment 2 from each ventilation portion 81a. That is, the first guide member 4 further includes a second return portion 44.
- the second return portion 44 is formed along the outer peripheral edge of the guide main body portion 41. The second return portion 44 can prevent the water received by the guide main body 41 from falling downward from the outer peripheral edge of the guide main body 41.
- the second return portion 44 is formed continuously with the first return portion 42.
- the guide main body 41 has an opening 41b in the center so as to avoid the exhaust pipe 136.
- the first guide member 4 further includes a third return portion 45.
- the 3rd return part 45 is arrange
- the third return portion 45 is formed along the inner peripheral edge of the guide main body portion 41. The third return part 45 can prevent the water received by the guide main body part 41 from dropping downward from the opening part 41b.
- the first and second extending portions 43 a and 43 b extend from the guide main body portion 41 to the outside of the engine compartment 2.
- the first extending portion 43 a extends rearward along the right side surface of the engine compartment 2.
- the second extending portion 43 b extends rearward along the left side surface of the engine compartment 2.
- the first extending portion 43a is disposed on the right side with respect to the opening 81b in plan view.
- the second extending portion 43b is disposed on the left side with respect to the opening 81b in plan view. For this reason, if it removes from the cover 18c, it will become possible to access the apparatus in the engine compartment 2 via the opening part 81b. That is, when accessing the device in the engine compartment 2 from the opening 81b, the first and second extending portions 43a and 43b do not get in the way.
- FIG. 9 is a side view of the first and second guide members 4 and 5 as viewed from the left.
- the first and second extending portions 43a and 43b are inclined downward toward the tip.
- tip of the 1st and 2nd extension parts 43a and 43b means a rear end. That is, the first and second extending portions 43a and 43b are inclined downward toward the rear end.
- the rear end portions 431a and 431b of the extending portions 43a and 43b are located outside the engine compartment 2. Specifically, the rear end portions 431 a and 431 b of the extending portions 43 a and 43 b are located in the cooling chamber 3.
- the partition wall 9 has a notch at its upper end. Each extending portion 43 a and 43 b extends to the cooling chamber 3 through the notch portion of the partition wall 9. According to this configuration, the first guide member 4 attached to the top plate 81 can be removed together with the top plate 81.
- the guide main body 41 is inclined downward toward the first and second extending portions 43a and 43b.
- the first and second extending portions 43 a and 43 b are connected to the rear end of the guide main body portion 41. For this reason, the guide main body 41 is inclined downward toward the rear.
- the inclination angle of the guide main body 41 is smaller than the inclination angles of the first and second extending portions 43a and 43b.
- the guide main body 41 Since the guide main body 41 is inclined in this way, rainwater received by the guide main body 41 flows toward the first and second extending portions 43a and 43b. And since the 1st and 2nd extension parts 43a and 43b are also inclined, the rainwater etc. which flowed to the 1st and 2nd extension parts 43a and 43b flow toward back. Since the rear end portions 431a and 431b of the first and second extending portions 43a and 43b are located outside the engine chamber 2, the rainwater flowing through the first and second extending portions 43a and 43b 2 is discharged to the outside.
- the first and second extending portions 43 a and 43 b have a fourth return portion 46.
- the 4th return part 46 is formed along the outer periphery of the 1st and 2nd extension parts 43a and 43b.
- the 2nd return part 44 formed in the guide main-body part 41 and the 4th return part 46 formed in each extension part 43a, 43b are mutually continuous.
- the fourth return portion 46 is also formed continuously with the first return portion 42. Thereby, the water received in the guide main body 41 can be made to flow to each extending part 43a, 43b.
- FIG. 10 is a perspective view of the second guide member 5 viewed from the right front.
- a part of the top plate 81 is omitted for easy illustration.
- the second guide member 5 is disposed above the injection device 134.
- the second guide member 5 extends in the vertical direction between the notch 41a of the first guide member 4 and the injection device 134.
- the second guide member 5 has a semi-cylindrical shape.
- the second guide member 5 is formed with a notch 51 so as to avoid interference with the connecting pipe 132 (see FIG. 7).
- the second guide member 5 cooperates with the side surface of the engine chamber 2 to constitute a second flow path 50 extending in the vertical direction above the injection device 134. Specifically, the second guide member 5 constitutes the second flow path 50 in cooperation with a part of the top plate 81. The second flow path 50 extends in the vertical direction right above the injection device 134.
- the upper end portion of the second guide member 5 is attached to the first guide member 4.
- the second guide member 5 extends from the notch 41a toward the injection device 134. Specifically, the upper end portion of the second guide member 5 is attached to the guide main body portion 41. For this reason, the 2nd flow path 50 and the 1st flow path 40 are connecting via the notch part 41a.
- the distance between the lower end of the second guide member 5 and the upper end of the injection device 134 in the vertical direction is, for example, about 15 mm to 50 mm. By setting such a distance, the second guide member 5 can efficiently guide the hot air around the injection device 134 to the notch 41a.
- the hot air around the injection device 134 is guided by the first guide member 4 and the second guide member 5, and is discharged to the outside of the engine chamber 2 from each ventilation portion 81 a.
- the hot air introduced into the first flow path 40 is discharged to the outside of the engine compartment 2 through each ventilation portion 81a. For this reason, it can suppress that the injection apparatus 134 is exposed to hot air.
- Each ventilation part 81a is not located right above the injection device 134, but is arranged at a position away from the injection device 134 in the horizontal direction. For this reason, it can prevent rainwater etc. falling on the injection device 134 through each ventilation part 81a.
- the first return portion 42 can prevent rainwater adhering to the guide main body portion 41 from passing through the guide main body portion 41 and falling from the notch portion 41a to the injection device 134.
- the first guide member 4 is arranged below each ventilation portion 81a and is configured to receive water that enters the engine compartment 2 from each ventilation portion 81a. According to this configuration, the first guide member 4 can receive the water that has entered the engine compartment 2 through the ventilation portions 81a. As a result, it is possible to prevent water from splashing on various devices accommodated in the engine chamber 2.
- the 2nd guide member 5 is a semi-cylinder shape, if the shape of the 2nd guide member 5 can guide the hot air around the injection apparatus 134 upwards, it will not be specifically limited to this.
- the second guide member 5 may be cylindrical. According to this configuration, the second guide member 5 can more efficiently guide the hot air around the injection device 134 upward.
- the engine chamber 2 and the cooling chamber 3 communicate with each other via the communication port 91, but the engine chamber 2 and the cooling chamber 3 do not have to communicate with each other.
- the hot air in the engine chamber 2 is not discharged to the cooling chamber 3. Therefore, even if the cooling fan 31 is operating, the hot air around the injection device 134 passes through the first flow path 40 and the second flow path 50 and then is discharged from the ventilation portions 81a to the outside of the engine chamber 2. Is done.
- each extending part 43a, 43b was comprised by one member, it is not limited to this in particular.
- each extending portion 43 a and 43 b may have a configuration including an extending main body portion 431, a receiving portion 432, and a discharge portion 433.
- FIG. 11 is a side sectional view of the rear vehicle body.
- the extended main body 431 extends rearward from the guide main body 41.
- the receiving portion 432 is disposed below the rear end portion of the extended main body portion 431 so as to receive rainwater flowing down from the rear end of the extended main body portion 431.
- the discharge part 433 communicates with the receiving part 432 through the communication hole 433a. Rainwater or the like flows from the receiving portion 432 to the discharging portion 433 through the communication hole 433a.
- the discharge part 433 extends to the cooling chamber 3 beyond the partition wall 9. For this reason, rainwater or the like that has flowed to the discharge unit 433 passes through the partition wall 9 and is discharged to the cooling chamber 3.
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Abstract
Description
以上、本発明の実施形態について説明したが、本発明はこれらに限定されるものではなく、本発明の趣旨を逸脱しない限りにおいて種々の変更が可能である。
案内本体部41に形成された切欠部41aの代わりに、開口部を形成してもよい。
上記実施形態では、本発明の冷却対象部材の一例として噴射装置134を例示したが、冷却対象部材はエンジン室2内に配置されているものであれば噴射装置134に限定されない。
上記実施形態では、第2案内部材5は半筒状であるが、第2案内部材5の形状は、噴射装置134の周辺の熱気を上方に案内することができれば、特にこれに限定されない。例えば、第2案内部材5は、筒状であってもよい。この構成によれば、第2案内部材5は、より効率的に、噴射装置134の周辺の熱気を上方に案内することができる。
上記実施形態では、エンジン室2と冷却室3とは連通口91を介して連通しているが、エンジン室2と冷却室3とは連通していなくてもよい。この場合、冷却ファン31が作動していても、エンジン室2内の熱気は冷却室3へと排出されない。したがって、冷却ファン31が作動していても、噴射装置134の周辺の熱気は、第1流路40及び第2流路50を通った後、各通気部81aからエンジン室2の外部へと排出される。
上記実施形態では、各延在部43a、43bは、1つの部材によって構成されていたが、特にこれに限定されない。例えば、図11に示すように、各延在部43a、43bは、延在本体部431と、受け部432と、排出部433とを有するような構成であってもよい。なお、図11は、後部車体の側面断面図である。
上記実施形態では、本発明を適用したホイールローダ100について説明したが、本発明は、モータグレーダなどの他の作業車両にも適用することができる。
4 第1案内部材
41 案内本体部
41a 切欠部
42 第1返し部
5 第2案内部材
81 天板
81a 通気部
134 噴射装置
Claims (11)
- エンジンと、
前記エンジンを収容するエンジン室と、
前記エンジン室内に配置された冷却対象部材と、
水平方向において前記冷却対象部材から離れた位置に配置された通気部を有し、前記エンジン室の上面を画定する天板と、
前記冷却対象部材の上方において切欠部又は第1開口部を有し、前記切欠部又は前記第1開口部から前記通気部まで延び、前記通気部を下方から覆う第1案内部材と、
を備える、作業車両。 - [規則91に基づく訂正 22.08.2014]
前記切欠部又は前記第1開口部と前記冷却対象部材との間において上下方向に延びる第2案内部材をさらに備える、
請求項1に記載の作業車両。 - 前記第2案内部材と前記エンジン室の側面とによって、前記冷却対象部材の上方において上下方向に延びる流路が構成される、
請求項2に記載の作業車両。 - 前記第2案内部材は、半筒状である、
請求項3に記載の作業車両。 - 前記第1案内部材は、前記切欠部又は前記第1開口部の周縁において上方に延びる返し部をさらに有する、
請求項1から4のいずれかに記載の作業車両。 - 前記第1案内部材は、板状であって、前記天板に取り付けられる、
請求項1から5のいずれかに記載の作業車両。 - 前記第1案内部材は、前記エンジン室の外部へ延びる延在部をさらに有する、
請求項1から6のいずれかに記載の作業車両。 - 前記延在部は、後方に延びており、
前記第1案内部材は、後方に向かって下方に傾斜する、
請求項7に記載の作業車両。 - 前記延在部は、前記エンジン室の右側面に沿って後方に延びる第1延在部と、前記エンジン室の左側面に沿って後方に延びる第2延在部と、を有し、
前記天板は、車幅方向に延びる第2開口部を有し、
前記第1延在部は、平面視において、前記第2開口部に対して右側に配置され、
前記第2延在部は、平面視において、前記第2開口部に対して左側に配置され、
前記第2開口部は、取り外し可能なカバーによって覆われる、
請求項7又は8に記載の作業車両。 - 前記第2案内部材の上端部は、前記第1案内部材に取り付けられる、
請求項1から9のいずれかに記載の作業車両。 - 前記エンジンからの排出ガスを処理するように構成された選択触媒還元装置と、
前記選択触媒還元装置に接続される接続管と、
をさらに備え、
前記冷却対象部材は、前記接続管内に還元剤を噴射するように構成された噴射装置である、
請求項1から10のいずれかに記載の作業車両。
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EP14866115.0A EP2918437B1 (en) | 2014-08-19 | 2014-08-19 | Work vehicle |
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CN201480003695.7A CN104903135B (zh) | 2014-08-19 | 2014-08-19 | 作业车辆 |
US14/654,887 US9631342B2 (en) | 2014-08-19 | 2014-08-19 | Work vehicle |
PCT/JP2014/071638 WO2015079749A1 (ja) | 2014-08-19 | 2014-08-19 | 作業車両 |
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- 2014-08-19 JP JP2015515061A patent/JP6009063B2/ja active Active
- 2014-08-19 EP EP14866115.0A patent/EP2918437B1/en active Active
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CN105517848A (zh) * | 2015-09-14 | 2016-04-20 | 株式会社小松制作所 | 作业车辆 |
JP6013620B2 (ja) * | 2015-09-14 | 2016-10-25 | 株式会社小松製作所 | 作業車両 |
US9587376B1 (en) | 2015-09-14 | 2017-03-07 | Komatsu Ltd. | Drainage structure for a work vehicle |
EP3153631A1 (en) | 2015-10-05 | 2017-04-12 | Komatsu Ltd. | Work vehicle |
JP2017122319A (ja) * | 2016-01-05 | 2017-07-13 | 住友建機株式会社 | ショベル |
Also Published As
Publication number | Publication date |
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EP2918437A4 (en) | 2016-04-20 |
JP6009063B2 (ja) | 2016-10-19 |
EP2918437A1 (en) | 2015-09-16 |
US9631342B2 (en) | 2017-04-25 |
US20160053463A1 (en) | 2016-02-25 |
EP2918437B1 (en) | 2017-02-01 |
CN104903135A (zh) | 2015-09-09 |
CN104903135B (zh) | 2017-06-23 |
JPWO2015079749A1 (ja) | 2017-03-16 |
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