WO2017203588A1 - 作業車両 - Google Patents
作業車両 Download PDFInfo
- Publication number
- WO2017203588A1 WO2017203588A1 PCT/JP2016/065258 JP2016065258W WO2017203588A1 WO 2017203588 A1 WO2017203588 A1 WO 2017203588A1 JP 2016065258 W JP2016065258 W JP 2016065258W WO 2017203588 A1 WO2017203588 A1 WO 2017203588A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- engine
- opening
- vent
- side plate
- engine hood
- 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
-
- 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
- B60K11/06—Arrangement in connection with cooling of propulsion units with air cooling
-
- 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
- B60K11/08—Air inlets for cooling; Shutters or blinds therefor
-
- 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
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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
- E02F9/0866—Engine compartment, e.g. heat exchangers, exhaust filters, cooling devices, silencers, mufflers, position of hydraulic pumps in the engine compartment
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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
- E02F9/0891—Lids or bonnets or doors or details thereof
-
- 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
-
- 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
- B60Y2200/412—Excavators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2306/00—Other features of vehicle sub-units
- B60Y2306/05—Cooling
Definitions
- the present invention relates to a work vehicle.
- a plurality of air holes are formed in the side plate of the engine cover for the purpose of taking outside air into the engine cover surrounding the engine of the work vehicle.
- Japanese Patent Application Laid-Open No. 2004-133867 proposes that outside air is sent to a desired position in the engine cover by disposing a ventilation member inside some of the plurality of ventilation holes formed in the engine cover.
- the present invention has been made in view of the above-described situation, and an object thereof is to provide a work vehicle capable of efficiently cooling the inside of the engine cover after the engine is stopped.
- a work vehicle includes an engine, an engine cover surrounding the engine, and a ventilation member disposed in the engine cover.
- the engine cover has a side plate in which at least one vent hole is formed. A side of at least one vent hole of the side plate is closed.
- the ventilation member has a first opening connected to at least one ventilation hole, and a second opening opened to the inside of the engine hood. The ventilation member is inclined upward toward the engine cover.
- no other ventilation holes are formed on the side of the ventilation holes formed in the side plate, and an increase in the outside air temperature around the ventilation holes can be suppressed.
- the temperature difference between the first opening and the second opening of the member can be increased. Therefore, it is possible to generate an air flow from the second opening to the first opening in the ventilation member. Therefore, the high temperature air in the engine cover can be released to the outside through the ventilation member via the ventilation member. As a result, the inside of the engine cover can be efficiently cooled even after the engine is stopped.
- the work vehicle according to the second aspect of the present invention relates to the first aspect, and the lower side of at least one vent hole in the side plate is closed.
- an increase in the outside air temperature in the vicinity of the vent can be further suppressed, so that the air flow from the second opening to the first opening in the ventilation member is strengthened. Can do. As a result, the inside of the engine cover can be cooled more efficiently.
- a work vehicle relates to the first or second aspect, and includes an exhaust gas aftertreatment unit disposed in the engine cover.
- the second opening opens toward the exhaust gas aftertreatment unit.
- the exhaust gas aftertreatment unit that is likely to become a high temperature is intensively cooled by the radiant heat of the engine and the high-temperature exhaust gas staying inside. Can do.
- a work vehicle relates to any one of the first to third aspects, and the ventilation member includes an enclosure having a first opening and a cylinder having a second opening. Including. The tube portion is attached to the enclosure portion.
- the desired region in the engine cover can be spot-cooled by appropriately changing the length and position of the cylinder portion.
- FIG. 1 is a side view of the excavator 100.
- front”, “rear”, “left”, and “right” indicate directions with reference to the state of looking forward from the driver's seat.
- Vehicle width direction is synonymous with “left-right direction”.
- the hydraulic excavator 100 is an example of a work vehicle according to the present embodiment.
- the excavator 100 includes a vehicle main body 1 and a work machine 4.
- the vehicle body 1 has a traveling body 2 and a revolving body 3.
- the traveling body 2 is driven by the power of the engine 10.
- the swivel body 3 is placed on the traveling body 2.
- the turning body 3 can turn with respect to the traveling body 2.
- the revolving unit 3 includes a cab 5, an equipment room cover 6, an engine cover 7, and a counterweight 8.
- the cab 5 is disposed on the left side of the base end portion of the work machine 4.
- the equipment room cover 6 is disposed behind the cab 5.
- An equipment room is formed inside the equipment room cover 6.
- the equipment room contains a fuel tank, a hydraulic oil tank, and the like.
- the engine cover 7 is connected to the rear of the equipment room cover 6.
- An engine chamber is formed inside the engine cover 7.
- the engine chamber accommodates the engine 10, the exhaust gas aftertreatment unit 20, and the like.
- the engine cover 7 surrounds the engine 10 and the exhaust gas aftertreatment unit 20.
- the engine cover 7 includes a side cover 9a and an engine hood 9b.
- the side cover 9 a surrounds the side of the engine 10.
- the engine hood 9b is disposed on the side cover 9a.
- the engine hood 9b is attached to the side cover 9a so that it can be opened and closed.
- the engine hood 9 b covers the engine 10 and the exhaust gas aftertreatment unit 20.
- the exhaust gas aftertreatment unit 20 is disposed in the engine hood 9b.
- the exhaust gas aftertreatment unit 20 is disposed above the engine 10.
- the counterweight 8 is disposed behind the engine cover 7.
- the work machine 4 is attached to the front part of the revolving unit 3.
- the work machine 4 includes a boom 4a, an arm 4b, and a bucket 4c.
- the work machine 4 is driven by supplying hydraulic oil.
- FIG. 2 is a front perspective view for explaining the internal configuration of the engine hood 9b.
- FIG. 3 is a front perspective sectional view for explaining the internal configuration of the engine hood 9b.
- FIG. 4 is a rear perspective sectional view for explaining the internal configuration of the engine hood 9b. In FIG. 2, the engine hood 9b is opened, and in FIGS. 3 and 4, the engine hood 9b is closed.
- the exhaust gas aftertreatment unit 20 is accommodated in the engine hood 9b.
- the exhaust gas aftertreatment unit 20 includes a diesel particulate filter device 21, a selective catalyst reduction device 22, a connection pipe 23, and a reducing agent injection device 24.
- the diesel particulate filter device 21 collects particulate matter contained in the exhaust gas from the engine 10 (see FIG. 1) with a filter.
- the diesel particulate filter device 21 has a substantially cylindrical outer shape.
- the diesel particulate filter device 21 is disposed along the front-rear direction.
- the selective catalyst reduction device 22 is arranged downstream of the diesel particulate collection filter device 21. Exhaust gas that has passed through the diesel particulate filter device 21 is introduced into the selective catalyst reduction device 22.
- the selective catalyst reduction device 22 reduces nitrogen oxides in the exhaust gas with ammonia.
- the selective catalyst reduction device 22 has a substantially cylindrical outer shape.
- the selective catalyst reduction device 22 is arranged along the front-rear direction.
- An exhaust pipe 25 protruding from the engine hood 9b is connected to the rear end portion of the selective catalyst reduction device 22. The exhaust gas processed by the exhaust gas aftertreatment unit 20 is discharged to the outside from the exhaust pipe 25.
- connection pipe 23 connects the diesel particulate filter device 21 and the selective catalyst reduction device 22.
- the connection pipe 23 is connected to the rear end portion of the diesel particulate filter device 21 and the front end portion of the selective catalyst reduction device 22.
- the reducing agent injection device 24 is attached to the connection pipe 23.
- a reducing agent supply pipe 27 is connected to the reducing agent injection device 24.
- the reducing agent supply pipe 27 supplies urea water sent from a urea water tank (not shown) to the reducing agent injection device 24.
- the reducing agent injection device 24 injects urea water into the exhaust gas flowing through the connection pipe 23.
- the urea water injected from the reducing agent injection device 24 is hydrolyzed by the heat of the exhaust gas to become ammonia. Ammonia generated in the connection pipe 23 is introduced into the selective catalyst reduction device 22 together with the exhaust gas.
- the diesel particulate filter device 21, the selective catalyst reduction device 22, and the reducing agent injection device 24 are heated to a high temperature by the radiant heat of the engine 10 and the high-temperature exhaust gas that stays inside the engine 10 during and after the engine 10 is driven.
- the engine hood 9b includes an upper plate 91 and four side plates (only the first side plate 92, the second side plate 93, and the third side plate 94 are shown in FIGS. 2 to 4).
- the upper plate 91 is disposed above the exhaust gas aftertreatment unit 20.
- the upper plate 91 is formed in a planar shape.
- the upper plate 91 is formed with a plurality of vent holes H1 and exhaust pipe insertion holes H2.
- the plurality of ventilation holes H1 include various shapes of ventilation holes such as rounded squares or circles. While the engine 10 is being driven and stopped, the air in the engine hood 9b is released to the outside through the vent holes H1. The position, shape, and number of each vent hole H1 can be changed as appropriate.
- the exhaust pipe 25 is inserted into the exhaust pipe insertion hole H2 when the engine hood 9b is closed.
- the first side plate 92 extends downward from the right end portion of the upper plate 91.
- the upper half of the first side plate 92 is formed in a curved shape, and the lower half of the first side plate 92 is formed in a flat shape.
- the first side plate 92 is a right plate of the engine hood 9b.
- the first side plate 92 is continuous with the second side plate 93 and the third side plate 94.
- the first side plate 92 has a plurality of air holes H3. While the engine 10 is being driven and stopped, the air in the engine hood 9b is released to the outside through the air holes H3. The position, shape, and number of each vent hole H3 can be changed as appropriate.
- the second side plate 93 extends downward from the front end portion of the upper plate 91.
- the upper half of the second side plate 93 is formed in a curved shape, and the lower half of the second side plate 93 is formed in a flat shape.
- the second side plate 93 is a front plate of the engine hood 9b.
- the second side plate 93 faces the third side plate 94 with the upper plate 91 interposed therebetween.
- the second side plate 93 has the same outer shape as the third side plate 94. However, in the present embodiment, the second side plate 93 has no vent hole.
- the third side plate 94 extends downward from the rear end portion of the upper plate 91.
- the upper half of the third side plate 94 is formed in a curved shape, and the lower half of the third side plate 94 is formed in a flat shape.
- the third side plate 94 is a rear plate of the engine hood 9b.
- a plurality of vent holes H4 are formed in the third side plate 94. As shown in FIG. 4, the plurality of vent holes H4 include an upper vent group H5 and a lower vent group H6.
- the third side plate 94 is an example of a side plate of the engine cover 7.
- the upper ventilation hole group H5 is formed in the upper half of the third side plate 94 formed in a curved surface shape.
- the upper vent group H5 includes five first vent holes H51, five second vent holes H52, five third vent holes H53, two fourth vent holes H54 and two fifth vent holes H55.
- the five first vent holes H51 are formed at the lowest level of the upper vent group H5.
- the five first vent holes H51 are formed above the lower vent hole group H6.
- the five first vent holes H51 are formed at equal intervals in the vehicle width direction.
- five second vent holes H52, five third vent holes H53, two fourth vent holes H54, and two fifth vent holes H55 are sequentially formed. While the engine 10 is being driven and stopped, the air in the engine hood 9b is released to the outside through the upper vent group H5.
- the position, shape, and number of the air holes included in the upper air hole group H5 can be changed as appropriate.
- the lower ventilation hole group H6 is formed in the lower half of the third side plate 94 formed in a planar shape.
- the lower vent group H6 includes a lower vent H61, five middle vents H62, and five upper vents H63.
- the lower side vent hole group H6 is an example of “at least one vent hole” formed in the third side plate 94.
- the lower vent hole H61 is a single vent formed in the lowermost stage of the lower vent group H6.
- the lower vent H61 is formed in a horizontally long shape so as to extend in the vehicle width direction.
- the five middle vent holes H62 are formed above the lower vent hole H61.
- the five middle vent holes H62 are formed at equal intervals in the vehicle width direction.
- the total width of the five middle vent holes H62 is substantially the same as the full width of the lower vent hole H61.
- the five upper vent holes H63 are formed above the five middle vent holes H62.
- the five upper vent holes H63 are formed at equal intervals in the vehicle width direction.
- the total width of the five upper vent holes H63 is substantially the same as the full width of the lower vent hole H61.
- the air in the engine cover 7 is discharged to the outside from the lower air vent group H6 through a vent member 30 described later.
- the position, shape, and number of vent holes included in the lower vent group H6 can be changed as appropriate.
- the side of the lower vent group H6 in the third side plate 94 is closed. No other air holes are formed on both sides of the lower air hole group H6. Further, the lower side of the lower vent group H6 in the third side plate 94 is closed. No other air holes are formed below the lower air hole group H6.
- the ventilation member 30 is disposed inside the lower ventilation hole group H6.
- the ventilation member 30 is disposed so as to cover the ventilation holes H61 to H63 included in the lower ventilation hole group H6 from the inside.
- the ventilation member 30 covers the inside of all the ventilation holes in the lower region among all the ventilation holes H4 formed in the third side plate 94.
- FIG. 5 is an exploded perspective view for explaining the configuration of the ventilation member 30.
- FIG. 6 is a cross-sectional view for explaining the configuration of the ventilation member 30.
- the ventilation member 30 includes an enclosure part 31, a connecting plate 32, two fixtures 33, a first cylinder part 34, and a second cylinder part 35.
- the ventilation member 30 is formed in a cylindrical shape (hollow shape) as a whole. As shown in FIG. 6, an air flow path 30 a is formed inside the ventilation member 30.
- the enclosure 31 is formed in a dished shape with an edge.
- the enclosure 31 extends horizontally along the vehicle width direction.
- the enclosure 31 is fixed to the inner surface 94S of the third side plate 94.
- the enclosure 31 may be welded to the inner surface 94S of the third side plate 94, or may be fixed by a fixture (not shown).
- the enclosure 31 has a first opening 31a, a connection opening 31b, and two fixing holes 31c.
- the first opening 31 a opens toward the third side plate 94.
- the first opening 31 a is in close contact with the inner surface 94 ⁇ / b> S of the third side plate 94 in a state where the enclosure 31 is fixed to the third side plate 94.
- the first opening 31a is connected to the lower air vent group H6 formed in the third side plate 94.
- the first opening 31a is arranged so as to totally block the insides of the vent holes H61 to H63 included in the lower vent group H6. Accordingly, the first opening 31a is connected to all the air holes included in the lower air hole group H6 in a state where air can be circulated.
- the air that flows out from the first opening 31a can flow out from all the vents of the lower vent group H6, and all the air that flows in from the lower vent group H6 to the inside is the first opening 31a. Flow into.
- the enclosure 31 includes a vertical plate 311, a bottom plate 312, a right plate 313, a left plate 314, and an upper plate 315.
- the vertical plate 311 is separated from the third side plate 94.
- the vertical plate 311 is formed with a connection opening 31b and two fixing holes 32a.
- the bottom plate 312 is connected to the lower end of the vertical plate 311. As shown in FIG. 6, the bottom plate 312 is inclined with respect to the horizontal line. The bottom plate 312 is inclined downward as it is closer to the third side plate 94. And the front-end
- the engine hood 9b opens so that the lower air vent group H6 faces downward. Therefore, even if water or dust accumulates in the enclosure 31, the engine hood It is easily discharged by opening 9b.
- the right plate 313 continues to the right end of the vertical plate 311.
- the left plate 314 is continuous with the left end portion of the vertical plate 311.
- the upper plate 315 continues to the upper end portion of the vertical plate 311.
- the first opening 31 a of the enclosure 31 is formed by the bottom plate 312, the right plate 313, the left plate 314, and the upper plate 315.
- connection opening 31 b and the two fixing holes 31 c are formed in the vertical plate 311 of the enclosure 31.
- the connection opening 31b has a smaller diameter than the first opening 31a.
- the two fixing holes 31c are formed on both sides of the connection opening 31b.
- the connecting plate 32 is disposed so as to close the connecting opening 31b.
- a first cylinder part 34 and a second cylinder part 35 are fixed to the connecting plate 32.
- the 1st cylinder part 34 and the 2nd cylinder part 35 are being fixed to the connection plate 32 by welding, it is not restricted to this.
- Two fixing holes 32 a are formed in the connecting plate 32.
- the two fixing holes 32 a are formed on both sides of the first cylinder part 34 and the second cylinder part 35.
- the two fixtures 33 are inserted through the two fixing holes 32 a of the connecting plate 32 and the two fixing holes 31 c of the enclosure 31. As a result, the connecting plate 32 is fixed to the enclosure 31.
- the first tube portion 34 is fixed to the connecting plate 32.
- the first cylinder portion 34 extends from the connecting plate 32 toward the inside of the engine hood 9b.
- the 1st cylinder part 34 has the 2nd opening part 34a open
- the second opening 34a opens toward the exhaust gas aftertreatment unit 20 (see FIG. 3).
- the second opening 34 a is preferably adjacent to the exhaust gas aftertreatment unit 20. More preferably, the second opening 34a is adjacent to the reducing agent injection device 24 that needs to be cooled in the exhaust gas aftertreatment unit 20 in particular.
- the 1st cylinder part 34 inclines upwards toward the engine hood 9b. Therefore, the ventilation member 30 is also inclined upward as a whole toward the engine hood 9b.
- the air flow path 30 a is inclined upward as a whole from the second opening 34 a side of the first cylinder portion 34 toward the first opening 31 a side of the enclosure 31.
- the second cylinder part 35 is fixed to the connecting plate 32.
- the second cylinder part 35 is disposed adjacent to the left side of the first cylinder part 34.
- the second cylinder portion 35 extends from the connecting plate 32 toward the inside of the engine hood 9b.
- the 2nd cylinder part 35 has the 3rd opening part 35a open
- the third opening 35a opens toward the exhaust gas aftertreatment unit 20 (see FIG. 3).
- the third opening 35 a is preferably adjacent to the exhaust gas aftertreatment unit 20. It is preferable that the 3rd opening part 35a is adjacent to the reducing agent injection apparatus 24 which needs cooling especially among the exhaust-gas aftertreatment units 20.
- the second cylinder portion 35 is inclined upward toward the engine hood 9b. Therefore, the ventilation member 30 is also inclined upward as a whole toward the engine hood 9b.
- the air flow path 30 a is inclined upward as a whole from the third opening 35 a side of the second cylindrical portion 35 toward the first opening 31 a
- the hydraulic excavator 100 includes an engine hood 9b that covers the upper side of the engine 10, and a ventilation member 30 that is disposed in the engine hood 9b.
- the engine hood 9 b has a third side plate 94.
- the third side plate 94 is formed with a lower ventilation hole group H6 (an example of “at least one ventilation hole”), and the side of the lower ventilation hole group H6 is closed.
- the first opening 31a of the ventilation member 30 is connected to the inside of the lower ventilation hole group H6.
- the second opening 34a of the ventilation member 30 is opened to the inside of the engine hood 9b.
- the ventilation member 30 is inclined upward toward the engine hood 9b.
- the second opening 34 a of the ventilation member 30 opens toward the exhaust gas aftertreatment unit 20.
- the exhaust gas aftertreatment unit 20 that tends to be particularly hot can be intensively cooled by the radiant heat of the engine 10 and the high temperature exhaust gas staying inside.
- the ventilation member 30 includes an enclosure 31 having a first opening 31a and a cylinder 34 having a second opening 34a.
- the cylinder part 34 is attached to the enclosure part 31.
- a desired region in the engine hood 9b can be spot-cooled by appropriately changing the length and position of the cylindrical portion 34.
- the 3rd side board 94 decided to have the upper side vent hole group H5 and the lower side vent hole group H6, it is not restricted to this.
- the third side plate 94 may not have the upper vent group H5.
- the third side plate 94 has the lower vent group H6, and the lower vent group H6 includes a lower vent H61, five middle vents H62, and five upper vents H63. However, it is not limited to this.
- the third side plate 94 only needs to have at least one vent hole.
- the third side plate 94 is closed on the side of the lower ventilation hole group H6 without being formed with a ventilation hole, but may be formed if it is a minute ventilation hole. .
- the vent hole is smaller than the total opening area of the lower vent group H6 whose inner side is blocked by the vent member 30, it may be formed on the side of the lower vent group H6. Good.
- the inside of the engine hood 9b can be efficiently cooled after the engine is stopped.
- the side of the lower vent group H6 is closed. In the concept.
- the third side plate 94 is closed below the lower ventilation hole group H6 without being formed with a ventilation hole, but may be formed as long as it is a minute ventilation hole. Specifically, as long as the ventilation holes are smaller than the total opening area of the lower ventilation hole group H6 whose inner side is blocked by the ventilation member 30, the ventilation holes may be formed below the lower ventilation hole group H6. . Even in this case, since the influence on the rise of the outside air temperature around the lower air vent group H6 is slight, the inside of the engine hood 9b can be efficiently cooled after the engine is stopped. Thus, in the present specification, even when there are minute vents that do not substantially affect the cooling in the engine hood 9b, “the lower side of the lower vent group H6 is blocked”. It is included in the concept.
- the ventilation member 30 is attached to the third side plate 94, but the present invention is not limited to this. Since the ventilation member 30 has the above-described effects by being attached to a side plate having a ventilation hole, for example, the same effect can be obtained even if it is arranged inside the ventilation hole H3 formed in the first side plate 92. Can do.
- the single lower air vent H61 extending in the vehicle width direction is arranged at the lowermost stage of the lower air vent group H6, but the present invention is not limited to this.
- the lower vent hole H61 may be divided into a plurality of vent holes.
- the ventilation member 30 has the first cylinder part 34 and the second cylinder part 35, but may have only one of the first cylinder part 34 and the second cylinder part 35. Moreover, although the 1st cylinder part 34 and the 2nd cylinder part 35 decided to be the same member, a different member may be sufficient. For example, by changing the length and arrangement of the first cylinder part 34 and the second cylinder part 35, different areas in the engine hood 9b can be spot-cooled.
- the ventilation member 30 is configured by the enclosure part 31, the connecting plate 32, the first cylinder part 34, and the second cylinder part 35, but is not limited thereto.
- the ventilation member 30 may be configured by only the surrounding portion 31.
- the connection opening 31b of the enclosure 31 functions as a “second opening”.
- the shape and size of the enclosure part 31 can be changed as appropriate.
- the ventilation member 30 may be configured only by the first cylinder portion 34. In this case, the opening opposite to the second opening 34a functions as a “second opening”. In the above case, the shape and size of the enclosure part 31 and the first cylinder part 34 can be changed as appropriate.
- the ventilation member 30 is provided with the first cylinder part 34 and the second cylinder part 35, but is not limited thereto.
- the ventilation member 30 may include only one of the first tube portion 34 and the second tube portion 35, or one or more tube portions in addition to the first tube portion 34 and the second tube portion 35. You may have.
- the exhaust gas aftertreatment unit 20 may include a diesel oxidation catalyst (DOC) instead of the diesel particulate filter device 21.
- DOC diesel oxidation catalyst
- the diesel oxidation catalyst has a function of reducing nitrogen monoxide (NO) among nitrogen oxides (NOx) in exhaust gas and increasing nitrogen dioxide (NO 2 ).
- the ventilation member 30 is disposed inside the third side plate 94 of the engine hood 9b for the purpose of efficiently cooling the inside of the engine cover 7.
- the ventilation member 30 only needs to be disposed inside the side plate of the engine cover 7, and may be disposed inside the side cover 9 a of the engine cover 7.
- the side cover 9a and the third side plate 94 of the engine hood 9b are examples of “side plates of the engine cover”.
- each of the first cylinder part 34 and the second cylinder part 35 has a circular cross section, but may be a rectangle, a polygon, an ellipse, or the like.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Component Parts Of Construction Machinery (AREA)
- Superstructure Of Vehicle (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
Description
図1は、油圧ショベル100の側面図である。以下の説明において、「前」「後」「左」「右」とは、運転席から前方を見た状態を基準とする方向を示す。「車幅方向」は、「左右方向」と同義である。
図2は、エンジンフード9bの内部構成を説明するための前方斜視図である。図3は、エンジンフード9bの内部構成を説明するための前方斜視断面図である。図4は、エンジンフード9bの内部構成を説明するための後方斜視断面図である。図2ではエンジンフード9bが開かれており、図3及び図4ではエンジンフード9bが閉じられている。
(1)油圧ショベル100は、エンジン10の上方を覆うエンジンフード9bと、エンジンフード9b内に配置される通気部材30とを備える。エンジンフード9bは、第3側板94を有する。第3側板94には下側通気孔群H6(「少なくとも1つの通気孔」の一例)が形成されており、かつ、下側通気孔群H6の側方は閉塞されている。通気部材30の第1開口部31aは、下側通気孔群H6の内側につながる。通気部材30の第2開口部34aは、エンジンフード9bの内部に開放される。通気部材30は、エンジンフード9bに向かって上方に傾斜している。
上記実施形態において、第3側板94は、上側通気孔群H5と下側通気孔群H6を有することとしたが、これに限られるものではない。第3側板94は、上側通気孔群H5を有していなくてもよい。
9a 側方カバー
9b エンジンフード91 上板
92 第1側板
93 第2側板
94 第3側板
H4 通気孔
H6 下側通気孔群(少なくとも1つの通気孔の一例)
H61 下段通気孔
H62 中段通気孔
H63 上段通気孔
10 エンジン
20 排気ガス後処理ユニット
30 通気部材
30a 空気流路
31 囲い部
31a 第1開口
34 第1筒部
34a 第2開口部
35 第2筒部
35a 第3開口部
100 油圧ショベル(作業車両の一例)
Claims (4)
- エンジンと、
前記エンジンを取り囲むエンジンカバーと、
前記エンジンカバー内に配置される通気部材と、
を備え、
前記エンジンカバーは、少なくとも1つの通気孔が形成された側板を有し、
前記側板のうち前記少なくとも1つの通気孔の側方は閉塞されており、
前記通気部材は、前記少なくとも1つの通気孔につながる第1開口部と、前記エンジンカバーの内部に開放される第2開口部とを有し、
前記通気部材は、前記エンジンカバーに向かって上方に傾斜している、
作業車両。 - 前記側板のうち前記少なくとも1つの通気孔の下方は閉塞されている、
請求項1に記載の作業車両。 - 前記エンジンフード内に配置される排気ガス後処理ユニットを備え、
前記第2開口部は、前記排気ガス後処理ユニットに向かって開口する、
請求項1又は2に記載の作業車両。 - 前記通気部材は、前記第1開口部を有する囲い部と、前記第2開口部を有する筒部とを含み、
前記筒部は、前記囲い部に取り付けられる、
請求項1乃至3のいずれかに記載の作業車両。
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JP2016541732A JP6385440B2 (ja) | 2016-05-24 | 2016-05-24 | 作業車両 |
US15/124,760 US10556500B2 (en) | 2016-05-24 | 2016-05-24 | Work vehicle |
CN201680000827.XA CN107709075B (zh) | 2016-05-24 | 2016-05-24 | 作业车辆 |
PCT/JP2016/065258 WO2017203588A1 (ja) | 2016-05-24 | 2016-05-24 | 作業車両 |
KR1020167024507A KR101894343B1 (ko) | 2016-05-24 | 2016-05-24 | 작업 차량 |
DE112016000029.4T DE112016000029T5 (de) | 2016-05-24 | 2016-05-24 | Arbeitsfahrzeug |
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JP (1) | JP6385440B2 (ja) |
KR (1) | KR101894343B1 (ja) |
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US20230042733A1 (en) * | 2021-08-05 | 2023-02-09 | Kubota Corporation | Work vehicle |
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- 2016-05-24 KR KR1020167024507A patent/KR101894343B1/ko active IP Right Grant
- 2016-05-24 CN CN201680000827.XA patent/CN107709075B/zh active Active
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US20230042733A1 (en) * | 2021-08-05 | 2023-02-09 | Kubota Corporation | Work vehicle |
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DE112016000029T5 (de) | 2018-02-15 |
KR101894343B1 (ko) | 2018-09-03 |
CN107709075B (zh) | 2020-05-26 |
US20180162216A1 (en) | 2018-06-14 |
JP6385440B2 (ja) | 2018-09-05 |
US10556500B2 (en) | 2020-02-11 |
KR20170141578A (ko) | 2017-12-26 |
CN107709075A (zh) | 2018-02-16 |
JPWO2017203588A1 (ja) | 2018-06-07 |
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