WO2014175168A1 - 作業車両 - Google Patents
作業車両 Download PDFInfo
- Publication number
- WO2014175168A1 WO2014175168A1 PCT/JP2014/060967 JP2014060967W WO2014175168A1 WO 2014175168 A1 WO2014175168 A1 WO 2014175168A1 JP 2014060967 W JP2014060967 W JP 2014060967W WO 2014175168 A1 WO2014175168 A1 WO 2014175168A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- case
- urea
- exhaust gas
- urea water
- engine
- Prior art date
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Classifications
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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
- F01N13/18—Construction facilitating manufacture, assembly, or disassembly
- F01N13/1805—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body
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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
- 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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D33/00—Superstructures for load-carrying vehicles
- B62D33/06—Drivers' cabs
- B62D33/0617—Drivers' cabs for tractors or off-the-road vehicles
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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
- E02F9/0883—Tanks, e.g. oil tank, urea tank, fuel tank
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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
- 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
- F01N3/103—Oxidation catalysts for HC and CO only
-
- 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
- B60Y2200/20—Off-Road Vehicles
- B60Y2200/22—Agricultural vehicles
- B60Y2200/221—Tractors
-
- 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
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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
- 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
- F01N2610/1406—Storage means for substances, e.g. tanks or reservoirs
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- 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 such as an agricultural machine (tractor, combine) or a construction machine (bulldozer, hydraulic excavator, loader) equipped with an engine, and more specifically, particulate matter (soot, contained in exhaust gas).
- a work vehicle such as a tractor provided with an exhaust gas purifying device for removing particulate oxide or nitrogen oxides (NOx) contained in the exhaust gas.
- an opening / closing fulcrum shaft is arranged at the rear of the bonnet for covering the engine in order to improve the efficiency of maintenance work of the engine arranged at the front of the traveling machine body.
- the bonnet was rotated.
- a filter case having a diesel particulate filter and a catalyst case having a urea selective reduction catalyst are provided as exhaust gas purifiers (exhaust gas aftertreatment devices) in the exhaust path of a diesel engine.
- exhaust gas purifiers exhaust gas aftertreatment devices
- the present invention seeks to provide a work vehicle that has been improved by examining these current conditions.
- an invention according to claim 1 is directed to an operating unit on which an operator is boarded, a first case for removing particulate matter in exhaust gas from an engine, and a nitrogen oxide substance in exhaust gas from the engine.
- the structure includes a traveling machine body frame on which the driving unit is installed and a case support body that supports the second case, and the case support body is disposed on the traveling machine body frame. And the second case is attached to the traveling machine body frame via the case support.
- a driving unit on which an operator is boarded is configured by a cabin, and the cabin is mounted on the traveling machine body frame.
- the lower portion of the second case in the vertically long posture is attached via the case support body, and the upper portion of the second case in the vertically long posture is connected to the front corner frame of the cabin.
- the operation unit is disposed behind a hood in which the engine is installed, and the urea water tank for purifying exhaust gas and the urea water tank A urea mixing pipe for supplying urea water; and a structure in which an exhaust inlet of the second case is connected to an exhaust outlet of the first case via the urea mixing pipe;
- the urea water tank is installed between the engines.
- urea mixing tube is extended.
- the work vehicle includes a urea water tank for exhaust gas purification, a urea mixing pipe for supplying urea water from the urea water tank, and an exhaust outlet of the first case.
- a urea mixing pipe for supplying urea water from the urea water tank
- an exhaust outlet of the first case To the exhaust inlet of the second case via the urea mixing pipe, the first case is supported on the upper part of the engine, and parallel to the exhaust gas movement direction of the first case, A urea mixing tube is extended.
- the case support is provided on the step frame on the lower side of the driving unit on one side of the driving unit among the lower side of the driving unit installed on the traveling unit.
- a body is disposed, and the second case is mounted in a horizontally long posture via the case support on the lower surface side of the operating unit.
- the second case having a horizontally long posture is attached to the front end side of the boarding step on the lower surface side of the driving unit via the case support. It is a thing.
- the case support is disposed below the boarding step on the lower surface side of the driving unit and between the one side surface of the traveling machine body and the boarding / exiting step.
- the second case is attached to the second case.
- the exhaust gas purifying urea water tank, a urea mixing pipe for supplying urea water from the urea water tank, and an exhaust outlet of the first case are provided.
- the exhaust inlet of the second case is connected via the urea mixing pipe, and the first case is supported on the upper surface side of the engine and parallel to the exhaust gas movement direction of the first case.
- the urea mixing tube is extended.
- a tenth aspect of the present invention is the work vehicle according to the ninth aspect, wherein left and right engine frames are extended forward from the engine, and a radiator or a front wheel is disposed on the left and right engine frames.
- the urea water tank is attached between the left and right engine frames.
- the operating unit on which the operator gets on the first case for removing particulate matter in the exhaust gas of the engine, and the second case for removing nitrogen oxides in the exhaust gas of the engine.
- a work vehicle comprising: a traveling machine body frame on which the driving unit is installed; and a case support body that supports the second case, wherein the case support body is disposed on the traveling machine body frame, and the traveling Since the second case is attached to the body frame via the case support, the case support can be installed on the highly rigid traveling body frame, and the case support is manufactured by simplifying the size of the case support.
- the cost can be easily reduced, the support rigidity of the second case can be easily improved, and the assembly workability of the second case can be easily improved.
- the second case support structure can be easily simplified as compared with a conventional structure that also supports the second case by using an exhaust pipe.
- the operating unit on which the operator is boarded is constituted by a cabin, and the cabin is mounted on the traveling machine body frame, and the traveling machine body frame is interposed via the case support. Since the lower portion of the second case in the vertically long posture is attached and the upper portion of the second case in the vertically long posture is connected to the front corner frame of the cabin, the lower portion of the second case is connected to the case support. Can be mounted and fixed, the workability of the relatively heavy second case can be improved, and the side case can be easily shaken by connecting the front corner frame of the cabin and the upper part of the second case.
- the outer shape of the second case can be compactly formed in a vertically long cylindrical shape that can be prevented and can be easily fitted along the front corner frame of the cabin.
- the said operation part is arrange
- the exhaust outlet of the first case is connected to the exhaust inlet of the second case via the urea mixing pipe, and the urea water tank is disposed between the steering handle part of the operating part and the engine. Therefore, it is possible to suppress heat generation and vibration generated on the engine side from being transmitted to the operation unit side, and the urea water tank is heated by the heat generation on the engine side.
- the temperature of the urea aqueous solution in the urea water tank can be easily maintained, and the crystallization of the urea water can be reduced.
- the said urea water tank can be used effectively as the partition member, While being able to simplify the partition structure between the said operation part and the said engine, the said bonnet
- the urea water tank can be compactly arranged inside (engine room).
- the urea mixing pipe is extended between the rear portion of the engine and the front portion of the urea water tank in a direction crossing the exhaust gas movement direction of the first case. Therefore, the urea mixing pipe can be compactly disposed between the rear part of the engine and the front part of the urea water tank, and the urea mixing pipe is heated by heat generated on the engine side, thereby Even in the operation, the temperature of the urea aqueous solution in the urea mixing tube can be easily maintained, and the crystallization of urea water in the urea mixing tube can be reduced.
- a urea water tank for purifying exhaust gas and a urea mixing pipe for supplying urea water from the urea water tank are provided, and the exhaust outlet of the first case is connected via the urea mixing pipe.
- the exhaust gas inlet of the second case is connected, and the first case is supported on the upper part of the engine, and the urea mixing pipe is extended in parallel with the exhaust gas moving direction of the first case. Therefore, the urea mixing pipe is heated by the heat generated by the engine or the first case, and the crystallization of the urea water in the urea mixing pipe can be reduced, and the urea water is converted into ammonia into the exhaust gas.
- the length of the urea mixing tube heating portion heated by the heat generated by the engine can be made longer than the length necessary for mixing or longer, and the nitrogen oxides in the exhaust gas in the second case Excluding It can be improved exhaust gas Kiyoshika functions.
- a case support body is arrange
- the second case of the horizontally long posture is attached via the case support body along the front end side of the boarding step in the lower surface side of the operation unit,
- the second case can be installed in a compact manner while ensuring the front view of the operator of the section.
- the second case support structure can be easily simplified as compared with a conventional structure that also supports the second case by using an exhaust pipe.
- the second case is attached to the lower surface side of the operation unit below the boarding step and between the one side surface of the traveling machine body and the boarding / alighting step via the case support. Therefore, the outside of the second case can be protected at the boarding / alighting step, and the space between the side surface of the traveling machine body and the boarding / alighting step can be utilized to install the second case in a compact manner.
- a urea water tank for purifying exhaust gas and a urea mixing pipe for supplying urea water from the urea water tank are provided, and the exhaust outlet of the first case is connected to the urea mixing pipe via the urea mixing pipe.
- the exhaust inlet of the second case is connected, the first case is supported on the upper surface side of the engine, and the urea mixing pipe is extended in parallel with the exhaust gas movement direction of the first case. Therefore, the long urea mixing tube necessary for mixing the urea water can be compactly arranged on the upper surface of the engine, and the urea mixing tube is heated by the heat generated on the engine side. Even in a cold region, the temperature of the exhaust gas or aqueous urea solution in the urea mixing tube can be easily maintained, and the crystallization of urea water in the urea mixing tube can be reduced.
- the left and right engine frames are extended forward from the engine, and a radiator or a front wheel is disposed on the left and right engine frames. Since the urea water tank is attached to the inside of the bonnet for covering the engine (engine room), the urea water tank can be easily assembled using the space between the left and right engine frames. The urea water tank can be arranged in a compact manner.
- FIGS. 1 to 6 a farm tractor 1 equipped with a diesel engine will be described with reference to FIGS.
- a farm tractor 1 as a work vehicle shown in FIGS. 1 and 2 is configured to perform a plowing work and the like for plowing a farm field by mounting a plow working machine (not shown).
- FIG. 1 is a perspective view of the tractor 1
- FIG. 2 is a plan view thereof.
- the left side in the forward direction of the tractor 1 is simply referred to as the left side
- the right side in the forward direction is also simply referred to as the right side.
- a farm tractor 1 as a work vehicle supports a traveling machine body 2 with a pair of left and right front wheels 3 and a pair of left and right rear wheels 4, and a diesel engine at the front of the traveling machine body 2. 5 and driving the rear wheel 4 and the front wheel 3 with the diesel engine 5, the vehicle is configured to travel forward and backward.
- the upper surface side and the left and right side surfaces of the diesel engine 5 are covered with an openable / closable bonnet 6.
- a driving cabin 7 is installed as a driving unit on which an operator gets on.
- a front column 10 including a control seat 8 on which an operator sits, a control handle 9 as steering means, and the like.
- a fuel tank 12 that supplies fuel to the diesel engine 5 is provided below the boarding step 11 at the bottom of the cabin 7.
- left and right brake pedals 13, a clutch pedal 14, a transmission pedal 15, a forward / reverse switching lever 16 and the like are disposed as steering devices.
- the traveling machine body 2 also includes a mission case 17 for shifting the output from the diesel engine 5 and transmitting it to the rear wheels 4 (front wheels 3).
- a rear portion of the transmission case 17 is connected to a tiller mechanism (not shown) through a traction mechanism 21 such as a left and right lower link 18, a top link 19, and a left and right lift arm 20.
- the tiller working machine and the like are driven by a PTO shaft (not shown) provided on the rear side surface of 17.
- the traveling machine body 2 of the tractor 1 includes a diesel engine 5, a transmission case 17, a clutch case 22 that connects them, a front chassis 23 that extends forward from the diesel engine 5, and the like.
- a pair of left and right boarding steps 24 for the operator to get on and off are disposed on the left and right outer portions of the cabin 7.
- an intake manifold 33 is disposed on one side surface of the cylinder head 32 of the diesel engine 1.
- the cylinder head 32 is mounted on a cylinder block 35 in which an engine output shaft (crank shaft) and a piston (not shown) are incorporated.
- An exhaust manifold 36 is disposed on the other side of the cylinder head 32, and the front end and the rear end of the engine output shaft are projected from the front and rear surfaces of the cylinder block 35.
- a flywheel housing 38 is fixed to the rear surface of the cylinder block 35.
- a flywheel (not shown) is provided in the flywheel housing 38.
- the front side of the clutch case 22 is connected to the rear side of the flywheel housing 38.
- the power of the diesel engine 5 is extracted from the rear end side of the engine output shaft on which the flywheel is pivoted toward the transmission case 17.
- an oil pan 39 is disposed on the lower surface of the cylinder block 35
- a cooling fan 40 is disposed on the front surface side of the cylinder block 35
- a radiator 41 is installed facing the cooling fan 40.
- An oil cooler 42, an air cleaner 43, a battery 44, and the like are disposed on the front chassis 23 in front of the radiator 41.
- the intake manifold 3 is provided with an exhaust gas recirculation device (EGR) 45 for taking in exhaust gas for recirculation.
- EGR exhaust gas recirculation device
- An air cleaner 43 shown in FIG. 4 is connected to the intake manifold 33. The external air that has been dedusted and purified by the air cleaner 43 is sent to the intake manifold 33 and supplied to each cylinder of the diesel engine 5.
- a cooling water pump 46 for circulating cooling water in the cylinder block 35 and the radiator 41 is provided.
- a cooling water pump 46 is arranged on the cooling fan 40 installation side on the front side of the diesel engine 5.
- the cooling water pump 46 and the cooling fan 40 are connected to the engine output shaft of the diesel engine 5 via a V belt or the like, and the cooling water pump 46 and the cooling fan 40 are driven. While the cooling water is fed from the cooling water pump 46 into the cylinder block 35 via the EGR cooler 47 of the exhaust gas recirculation device 45, the diesel engine 5 is cooled by the cooling fan 40 wind. .
- each of the four cylinders 51 of the diesel engine 5 includes a fuel pump 52 and a common rail 53 that connect the fuel tank 12 shown in FIG.
- a common rail 53 and a fuel filter 54 are arranged on the intake manifold 33 installation side of the cylinder head 32, and a fuel pump 52 is arranged in the cylinder block 35 below the intake manifold 33.
- Each injector 51 has an electromagnetic switching control type fuel injection valve (not shown).
- the common rail 53 is connected to the discharge side of the fuel pump 52, and the cylindrical common rail 53 is connected to each injector 51 of the diesel engine 5. It is connected.
- the surplus of the fuel pumped from the fuel pump 52 to the common rail 53 is returned to the fuel tank 12, high-pressure fuel is temporarily stored in the common rail 53, and the high-pressure fuel in the common rail 53 is used for each diesel engine 5. Supplied inside the cylinder.
- the fuel in the fuel tank 12 is pumped to the common rail 53 by the fuel pump 52, the high-pressure fuel is stored in the common rail 53, and the fuel injection valves of the injectors 51 are controlled to open and close.
- High-pressure fuel in the common rail 53 is injected into each cylinder of the diesel engine 5. That is, by electronically controlling the fuel injection valve of each injector 51, the fuel injection pressure, injection timing, and injection period (injection amount) can be controlled with high accuracy. Therefore, nitrogen oxides (NOx) discharged from the diesel engine 5 can be reduced.
- NOx nitrogen oxides
- a first case 62 as a curate filter (DPF) and a second case 63 as a urea selective catalytic reduction (SCR) system for removing nitrogen oxides in exhaust gas of the diesel engine 1 are provided.
- DPF curate filter
- SCR selective catalytic reduction
- an oxidation catalyst 64 and a soot filter 65 are provided in the first case 62.
- the second case 63 includes an SCR catalyst 66 and an oxidation catalyst 67 for reducing urea selective catalyst.
- Exhaust gas discharged from each cylinder of the diesel engine 5 to the exhaust manifold 36 is discharged to the outside via the exhaust gas purification device 61 and the like.
- the exhaust gas purification device 61 is configured to reduce carbon monoxide (CO), hydrocarbons (HC), particulate matter (PM), and nitrogen oxides (NOx) in the exhaust gas of the diesel engine 5. is doing.
- the first case 62 is configured in a horizontally long elongated cylindrical shape that extends long in a direction parallel to the output shaft (crankshaft) of the diesel engine 5 in plan view.
- a DPF inlet pipe 68 for taking in exhaust gas is provided on one end of the first case 62 in the cylindrical shape.
- the one end side and the other end side of the first case 62 in the exhaust gas movement direction can be attached to and detached from the front and rear surfaces of the cylinder head 32 via the front support leg body 69 and the rear support leg body 70. I support it. That is, the first case 62 is attached to the upper surface side of the diesel engine 5 through the front support leg 69 and the rear support leg 70.
- the first case 62 is supported in parallel with the exhaust manifold 36 with the longitudinal direction of the cylindrical first case 62 facing the longitudinal direction of the diesel engine 5.
- a supercharger 71 for forcibly sending air to the diesel engine 5 is disposed at the exhaust gas outlet of the exhaust manifold 36.
- the DPF inlet pipe 68 is communicated with the exhaust manifold 36 via the supercharger 71, and the exhaust gas of the diesel engine 5 is introduced into the first case 62 from the DPF inlet pipe 68.
- a DPF outlet pipe 72 for exhaust gas exhaust is provided on the other end side of the cylindrical shape of the first case 62.
- the DPF outlet pipe 72 of the first case 62 is connected to the inlet side of the urea mixing pipe 73, and the exhaust gas of the first case 28 is introduced into the urea mixing pipe 73.
- the second case 63 is configured in a vertically long elongated cylindrical shape extending long in the vertical direction.
- An SCR inlet pipe 74 for taking in exhaust gas is provided on the lower end side of the cylindrical shape of the second case 63.
- An SCR inlet pipe 74 is connected to the outlet side of the urea mixing pipe 73 through a bellows-like connecting pipe 75 that can be bent and stretched.
- the end of the urea mixing pipe 73 to which the bellows-like connecting pipe 75 is connected is detachably fixed to the side surface of the cylinder block 35 with a pipe bracket 76. That is, the urea mixing pipe 73 is fixed to the diesel engine 5 through the first case 62 and the pipe bracket 76.
- the first case 62 and the urea mixing pipe 73 are attached to the diesel engine 5 supported by vibration isolation. Can be fixed together. The mechanical vibration on the urea mixing pipe 73 side is blocked by the bellows-like connecting pipe 75 and is not transmitted to the SCR inlet pipe 74 side.
- the lower end side of the tail pipe 81 is connected to the cylindrical upper end side of the second case 63.
- the tail pipe 81 is erected substantially vertically along the cabin frame 82 at the right corner of the operation cabin 7.
- the tail pipe 81 and the pipe cover 84 are fixed to the cabin frame 82 via the pipe mounting bracket 83, and the cylindrical upper end side of the second case 63 is detachably fixed to the cabin frame 82 via the case mounting bracket 85. is doing.
- a step frame 86 is fixed to the side surface of the clutch case 22, and the operation cabin 7 and the entry / exit step 24 are attached to the step frame 86, and the second case 63 is attached to the step frame 86 via the case frame 87.
- the end face is bolted so as to be detachable. That is, the back side of the case base 87 is bolted to the front side of the step frame 86, the lower end surface of the cylindrical shape of the second case 63 is brought into contact with the upper side of the case base 87, and the second case 63 is attached to the case base 87.
- the second case 63 is supported on the step frame 86.
- the first case 62 is horizontally disposed in the front-rear direction on the upper surface side of the diesel engine 5 (horizontal posture), while the second case 63 is placed in the vertical posture on the right side of the rear portion of the diesel engine 5 via the step frame 86.
- the first case 62 and the second case 63 can be compactly arranged around the hood 6 and the operation cabin 7 while being supported and capable of functionally forming the exhaust gas movement path of the diesel engine 5.
- a urea water tank 91 is mounted on the traveling machine body 2 (clutch case 22) at the rear of the bonnet 6.
- An oil injection port 92 for the fuel tank 12 is provided in the lower front portion on the left side of the cabin 7, and a water injection port 93 for the urea water tank 91 is provided on the upper surface of the rear portion of the hood 6.
- An oil injection port 92 and a water injection port 93 are disposed on the front surface on the left side of the cabin 57 where the operator gets on and off frequently, and the rear part of the diesel engine 5 (diesel engine 5 and urea water tank 91 is formed in the engine room formed by the hood 6.
- the urea mixing tube 73 is extended and supported in the right and left direction.
- the urea water tank 91 is installed between the front part of the front column 10 and the rear part of the diesel engine 5, heat generation and vibration generated on the diesel engine 5 side are absorbed by the urea water tank 91 and transmitted to the front column 10 side. And the temperature of the urea aqueous solution in the urea water tank 91 can be easily maintained even when working in a cold region. Crystallization can be reduced. Moreover, since a space for installing a partition material (a space for heat insulation and a space for vibration and soundproofing) is formed between the front column 10 and the diesel engine 5, the dead space can be used effectively so that the interior of the fuselage (engine The urea water tank 91 can be arranged compactly in the room.
- a urea water injection pump 94 that pumps the urea aqueous solution in the urea water tank 91, an electric motor 95 that drives the urea water injection pump 94, and urea that is connected to the urea water injection pump 94 via a urea water injection pipe 96.
- a water injection nozzle 97 is provided.
- a urea water injection nozzle 97 is attached to the urea mixing pipe 73 via an injection pedestal 98, and a urea aqueous solution is sprayed from the urea water injection nozzle 97 into the urea mixing pipe 73.
- the urea water supplied into the urea mixing pipe 73 is configured to be mixed as ammonia in the exhaust gas from the first case 62 to the second case 63.
- the bellows-like connecting pipe 75 is covered with a heat-resistant heat insulating material 99 such as glass fiber to prevent the exhaust gas temperature in the bellows-like connecting pipe 75 from being lowered, and urea in the exhaust gas is crystallized. Is suppressed.
- the urea mixing pipe 73 has an elbow pipe part that changes the movement direction of the exhaust gas by about 90 degrees and a long cylindrical straight pipe part that is connected to the SCR inlet pipe 74.
- An injection pedestal 98 is welded and fixed to an elbow pipe part where the elbow pipe part and the straight pipe part are joined, and an aqueous urea solution is sprayed from the urea water injection nozzle 97 toward the inner hole of the straight pipe part from the elbow pipe part side. To do.
- the urea mixing pipe 73 Since the urea mixing pipe 73 is installed in the space between the rear part of the diesel engine 5 and the front part of the urea water tank 91, the urea mixing pipe 73 is heated by the heat generated on the diesel engine 5 side, and the exhaust gas in the urea mixing pipe 73 is exhausted. It can suppress that the temperature of (urea aqueous solution) falls, and can reduce the crystallization of the urea water in the urea mixing pipe 73 inside.
- the oxidation catalyst 64 and the soot filter 65 in the first case 62 reduce carbon monoxide (CO) and hydrocarbons (HC) in the exhaust gas of the diesel engine 5.
- urea water from the urea water injection nozzle 97 is mixed into the exhaust gas from the diesel engine 5 inside the urea mixing pipe 73.
- the SCR catalyst 66 and the oxidation catalyst 67 in the second case 63 reduce nitrogen oxides (NOx) in the exhaust gas in which urea water is mixed as ammonia. That is, exhaust gas with reduced carbon monoxide (CO), hydrocarbons (HC), and nitrogen oxides (NOx) is discharged from the tail pipe 81 to the outside of the machine.
- an operation cabin 7 as an operation unit on which an operator is boarded
- a first case 62 for removing particulate matter in the exhaust gas of the diesel engine 5
- a work vehicle including a second case 63 for removing nitrogen oxides includes a step frame 86 as a traveling machine frame for mounting the driving unit 7 and a case base 87 as a case support for supporting the second case 63.
- the case frame 87 is arranged on the step frame 86, and the second case 63 is attached to the step frame 86 via the case frame 87.
- the case base 87 can be installed on the highly rigid step frame 86, the manufacturing cost can be easily reduced by simplifying the size of the case base 87, and the support rigidity of the second case 63 can be easily improved.
- the assembly workability of the two cases 63 can be easily improved.
- the second case 63 support structure can be easily simplified as compared with a conventional structure that also supports the second case 63 using the exhaust pipe.
- a driving unit on which an operator is boarded is configured by a driving cabin 7, and the driving cabin 7 is mounted on a step frame 86.
- a lower portion of the vertically long second case 63 is attached, and an upper portion of the vertically long second case is connected to a cabin frame 82 as a front corner frame of the operation cabin 7. Therefore, the lower part of the second case 63 can be fixed on the case base 87, the workability of assembling the relatively heavy second case 63 can be improved, and the cabin frame 82 of the operation cabin 7 can be connected to the upper part of the second case 63.
- the lateral swing of the second case 63 can be easily prevented, and the outer shape of the second case 63 can be compactly formed in a vertically long cylindrical shape that is easy to fit along the cabin frame 82 of the operation cabin 7.
- an operation cabin 7 is arranged behind a hood 6 in which a diesel engine 5 is installed, and urea water tank 91 for exhaust gas purification and urea water is supplied from the urea water tank 91.
- a urea mixing pipe 73 is provided, and the exhaust inlet of the second case 63 is connected to the exhaust outlet of the first case 62 via the urea mixing pipe 73, and the steering handle 9 part of the driving cabin 7 and the diesel engine 5 are connected to each other.
- a urea water tank 91 is installed between them. Therefore, heat generation and vibration generated on the diesel engine 5 side can be suppressed from being transmitted to the operation cabin 7 side, and the urea water tank 91 is heated by the heat generation on the diesel engine 5 side.
- the temperature of the urea aqueous solution in the urea water tank 91 can be easily maintained, and the crystallization of the urea water can be reduced.
- the urea water tank 91 can be effectively used as the partition member, and the partition structure between the driving cabin 7 and the diesel engine 5 can be simplified,
- the urea water tank 91 can be compactly arranged inside the bonnet 6 (engine room).
- a urea mixing pipe 73 is extended between the rear portion of the diesel engine 5 and the front portion of the urea water tank 91 in a direction crossing the exhaust gas movement direction of the first case 62. I am letting. Therefore, the urea mixing pipe 73 can be arranged compactly between the rear part of the diesel engine 5 and the front part of the urea water tank 91, and the urea mixing pipe 73 is heated by the heat generated on the diesel engine 5 side. Even in the operation, the temperature of the urea aqueous solution in the urea mixing tube 73 can be easily maintained, and the crystallization of the urea water in the urea mixing tube 73 can be reduced.
- the DPF inlet pipe 68 is located on the front side of the diesel engine 5, the exhaust gas flows from the front part to the rear part of the first case 62, and the diesel engine 5 rear part. The exhaust gas moves to the urea mixing tube 73.
- the DPF inlet pipe 68 is located on the rear side of the diesel engine 5, and the exhaust gas flows from the rear part to the front part of the first case 62.
- the exhaust gas is configured to move to a urea mixing pipe 73 provided in the upper part of the diesel engine 5 in parallel with the first case 62. That is, the urea mixing pipe 73 is extended and supported on the upper surface side of the diesel engine 5 in parallel with the first case 62 via the pipe bracket 76.
- the urea mixing pipe 73 is extended in parallel with the first case 28 extended in the front-rear direction on the upper surface side of the diesel engine 1, and urea disposed at a higher position than the cooling fan 24.
- a urea water injection nozzle 97 is attached to the front portion of the mixing pipe 73 via an injection pedestal 98, and a urea aqueous solution is sprayed from the urea water injection nozzle 97 into the urea mixing pipe 73.
- the urea water supplied into the urea mixing pipe 73 is The distance mixed as ammonia in exhaust gas can be formed long. Therefore, in the embodiment shown in FIG. 7, the urea water in the urea mixing pipe 73 is appropriately mixed as ammonia in the exhaust gas from the first case 62 to the second case 63. Further, the urea mixing pipe 73 is heated by the heat generation on the diesel engine 5 side, and the temperature of the exhaust gas (urea aqueous solution) in the urea mixing pipe 73 can be suppressed from decreasing, and the urea water in the urea mixing pipe 73 can be suppressed. Crystallization can be reduced.
- a urea water tank 91 for purifying exhaust gas and a urea mixing pipe 73 for supplying urea water from the urea water tank 91 are provided, and the first case 62 is connected to the exhaust outlet via the urea mixing pipe 73.
- the exhaust gas inlet of the two cases 63 is connected, and the first case 62 is supported on the upper part of the diesel engine 5, and the urea mixing pipe 73 is extended in parallel with the exhaust gas movement direction of the first case 62.
- the urea mixing pipe 73 is heated by the heat generated on the diesel engine 5 or the first case 62 side, and the crystallization of the urea water in the urea mixing pipe 73 can be reduced, and the urea water is mixed with the exhaust gas as ammonia.
- the length of the heating portion of the urea mixing pipe 73 that is heated by the heat generated by the diesel engine 5 can be made longer than the length necessary to do so, and the nitrogen oxides in the exhaust gas in the second case 63 It is possible to improve the exhaust gas hatching function for removing the gas.
- a third embodiment will be described with reference to FIGS.
- an exhaust gas purifying device 61 for purifying exhaust gas discharged from each cylinder of the diesel engine 5
- diesel particulates that remove particulate matter in the exhaust gas of the diesel engine 5 are used.
- a first case 62 as a curate filter (DPF)
- a second case 63 as a urea selective catalytic reduction (SCR) system for removing nitrogen oxides in exhaust gas of the diesel engine 1 are provided.
- an oxidation catalyst 64 and a soot filter 65 are provided in the first case 62.
- the second case 63 includes an SCR catalyst 66 and an oxidation catalyst 67 for reducing urea selective catalyst.
- the 2nd case 63 of 3rd Embodiment is comprised in the horizontally long elongate cylindrical shape extended long in the left-right direction.
- An SCR inlet pipe 74 for taking in exhaust gas is provided at the left end of the cylindrical shape of the second case 63.
- An SCR inlet pipe 74 is connected to the outlet side of the urea mixing pipe 73 through a bellows-like connecting pipe 75 that can be bent and stretched.
- the end of the urea mixing pipe 73 to which the bellows-like connecting pipe 75 is connected is detachably fixed to the side surface of the cylinder block 35 with a pipe bracket 76.
- the DPF inlet pipe 68 is located on the rear side of the diesel engine 5, the exhaust gas flows from the rear part to the front part of the first case 62, and the urea mixing pipe provided in parallel with the first case 62 at the upper part of the diesel engine 5.
- the exhaust gas moves to 73. That is, the urea mixing pipe 73 extending in the front-rear direction is fixed to the upper surface side of the diesel engine 5 via the first case 62 and the pipe bracket 76, and the first case 62 side of the upper surface of the diesel engine 5 is fixed.
- the urea mixing pipe 73 is arranged in parallel with the first case 62, and the first case 62 and the urea mixing pipe 73 can be integrally fixed to the diesel engine 5 supported by vibration isolation. The mechanical vibration on the urea mixing pipe 73 side is blocked by the bellows-like connecting pipe 75 and is not transmitted to the SCR inlet pipe 74 side.
- the lower end side of the tail pipe 81 is connected to the right end of the cylindrical shape of the second case 63.
- the tail pipe 81 is erected substantially vertically along the cabin frame 82 at the right corner of the operation cabin 7.
- the tail pipe 81 and the pipe cover 84 are fixed to the cabin frame 82 via the pipe mounting bracket 83.
- the base end side of the left and right step frame 86 as a traveling machine body frame is bolted to the left and right side surfaces of the clutch case 22 via the board bracket 85, and the left and right step frames are directed toward the left and right outer sides of the clutch case 22.
- the front end side of 86 is horizontally extended, and the operation cabin 7 is attached to the upper surface side of the middle part of the left and right step frames 86 via the cabin fixing shaft body 87, and the getting-on / off step 24 and the like are attached to the front end parts of the left and right step frames 86. .
- the step frame 86 supports the second case 63, and a column member 120 is welded and fixed to the lower surface side of the step frame 86, and a pair of left and right cases are disposed on the front side of the column member 120.
- the support plate 121 is fixed by welding, the case support plate 121 is integrally fixed to the step frame 86, and a pair of left and right case support plates 121 are projected from the support member 120 toward the front.
- a case support bracket 122 is integrally welded and fixed to the back side of the second case 63 out of the outer peripheral surface of the second case 63 for purifying exhaust gas, and the case support bracket 122 is moved rearward from the second case 63. Make it project.
- the case support bracket 122 is fitted between the pair of left and right case support plate bodies 121, and the upper bolt 126a and the lower bolt 126b are screwed to the left and right side surfaces of the pair of left and right case support plate bodies 121 and the case support bracket 122 from the left and right directions.
- the case support bracket 122 is fastened to the case support plate 121, and the second case 63 is detachably fixed to the step frame 86.
- the upper bolt 126a is removably locked to the engagement notch 121a having a forward opening shape of the case support plate 121, and the lower bolt 126b is passed through the position adjusting long hole 121b of the case support plate 121. That is, when the second case 63 is assembled, first, the upper bolt 126a is temporarily fixed to the case support bracket 122, the second case 63 is brought close to the mounting position of the case support plate 121, and the case support plate 121 is attached. The upper bolt 126a is engaged with the engagement notch 121a, and the second case 63 is temporarily fixedly supported by the case support plate 121.
- the lower bolt 126b is passed through the position adjusting long hole 121b of the case support plate 121, the lower bolt 126b is fastened to the case support bracket 122, and the upper bolt 126a is also fastened to the case support bracket 122.
- the case support bracket 122 is detachably fixed to the case support plate 121, and the second case 63 is mounted on the front side of the cabin 57 (operating unit) via the step frame 86.
- the first case 28 is arranged on the upper surface side of the diesel engine 1 in a horizontally long horizontal posture facing in the front-rear direction, while the second case 63 in a horizontally long posture facing in the left-right direction on the right side of the rear portion of the diesel engine 1. Is placed.
- a urea water tank 91 is mounted on the traveling machine body 2 (front chassis 23) in the front part of the bonnet 6.
- An oil injection port 92 for the fuel tank 12 is provided in the lower front portion on the left side of the cabin 7, and a water injection port 93 for the urea water tank 91 is provided on the left side of the front portion of the bonnet 6.
- An oil injection port 92 and a water injection port 93 are arranged on the left side of the traveling machine body 2 where the frequency of getting on and off by the operator is high, and a urea water tank 91 is arranged between the left and right front chassis 23 via a tank support frame 90.
- the oil cooler 42, the air cleaner 43, and the battery 44 are respectively disposed above the urea water tank 91 (in the engine room 89 formed by the bonnet 6).
- radiator 41 is disposed between the cooling fan 40 and the oil cooler 42 on the front surface side of the diesel engine 5 in the upper surface side of the front chassis 23, and diesel engine in the engine room 89 formed by the bonnet 6.
- a urea mixing pipe 73 is extended and supported in the front-rear direction on the upper surface side of the engine 5 (the right side of the second case where the exhaust gas moves from the rear to the front).
- a urea water injection pump 94 that pumps the urea aqueous solution in the urea water tank 91, an electric motor 95 that drives the urea water injection pump 94, and urea that is connected to the urea water injection pump 94 via a urea water injection pipe 96.
- a water injection nozzle 97 is provided.
- a urea water injection pump 94 and an electric motor 95 are provided on the rear surface side of the urea water tank 91, the middle of the urea water injection pipe 96 is covered with a heat insulating pipe cover body 96 a, the right side surface of the shroud 47, and the radiator 41.
- a pipe cover body 96 a is fixedly supported on the right side of the radiator 41 via a pipe stopper 48, and a urea water injection pipe 96 is piped from the right side surface of the radiator 41 toward the urea mixing pipe 73.
- the shroud 47 is disposed on the rear surface side of the radiator 41, covers the outside of the cooling fan 40 with the shroud 47, and moves the cooling fan 40 wind from the radiator 41 toward the outer periphery of the diesel engine 5.
- the urea water injection nozzle 97 is attached to the front end portion of the urea mixing pipe 73 connected to the front surface side of the first case 62 via the injection base 98.
- One end side of the urea water injection pipe 96 is connected to the urea water injection pump 94, the other end side of the urea water injection pipe 96 is connected to the urea water injection nozzle 97, and the urea water injection nozzle 97 is connected to the inside of the urea mixing pipe 73.
- the urea aqueous solution in the urea water tank 91 is sprayed.
- the urea water supplied into the urea mixing pipe 73 is configured to be mixed as ammonia in the exhaust gas from the first case 62 to the second case 63.
- the bellows-like connecting pipe 75 is covered with a heat-resistant heat insulating material 99 such as glass fiber to prevent the exhaust gas temperature in the bellows-like connecting pipe 75 from being lowered, and urea in the exhaust gas is crystallized. Is suppressed.
- the urea mixing pipe 73 has an elbow pipe part that changes the movement direction of the exhaust gas by about 90 degrees and a long cylindrical straight pipe part that is connected to the SCR inlet pipe 74.
- An injection pedestal 98 is welded and fixed to an elbow pipe part where the elbow pipe part and the straight pipe part are joined, and an aqueous urea solution is sprayed from the urea water injection nozzle 97 toward the inner hole of the straight pipe part from the elbow pipe part side. To do.
- the oxidation catalyst 64 and the soot filter 65 in the first case 62 reduce carbon monoxide (CO) and hydrocarbons (HC) in the exhaust gas of the diesel engine 5.
- urea water from the urea water injection nozzle 97 is mixed into the exhaust gas from the diesel engine 5 inside the urea mixing pipe 73.
- the SCR catalyst 66 and the oxidation catalyst 67 in the second case 63 reduce nitrogen oxides (NOx) in the exhaust gas in which urea water is mixed as ammonia. That is, exhaust gas with reduced carbon monoxide (CO), hydrocarbons (HC), and nitrogen oxides (NOx) is discharged from the tail pipe 81 to the outside of the machine.
- the traveling machine body 2 on which the diesel engine 5 is mounted As shown in FIGS. 8 to 13, the traveling machine body 2 on which the diesel engine 5 is mounted, the first case 62 for removing particulate matter in the exhaust gas of the engine 5, and the nitrogen oxides in the exhaust gas of the diesel engine 5
- the step frame 86 on the lower surface side of the driving cabin 7 on one side of the traveling vehicle body 2 among the lower surface side of the driving cabin 7 as the driving portion installed in the traveling vehicle body 2.
- a case support plate 121 as a case support and a case support bracket 122 are arranged, and a second case 63 is attached to the lower surface side of the operation cabin 7 in a horizontally long posture via the case support plate 121 and the case support bracket 122. Yes.
- the case support plate 121 can be installed on the highly rigid step frame 86, and the manufacturing cost can be easily reduced by simplifying the size of the case support plate 121 and the case support bracket 122, and the second case 63 can be supported.
- the rigidity and the like can be easily improved, and the assembly workability of the second case 63 can be easily improved.
- a second case 63 having a horizontally long posture is attached along the front end side of the boarding step 11 on the lower surface side of the driving cabin 7 via the case support plate 121 and the case support bracket 122. Yes. Therefore, the second case 63 can be compactly installed while ensuring the front view of the operator of the driving cabin 7. Further, the second case 63 support structure can be easily simplified as compared with a conventional structure that also supports the second case 63 using the exhaust pipe.
- a urea water tank 91 for purifying exhaust gas and a urea mixing pipe 73 for supplying urea water from the urea water tank 91 are provided, and the urea mixing pipe 73 is provided at the exhaust outlet of the first case 62.
- the exhaust gas inlet of the second case 63 is connected to the upper surface of the diesel engine 5 so that the first case 62 is supported, and the urea mixing pipe is parallel to the exhaust gas movement direction of the first case 62. 73 is extended. Accordingly, the long urea mixing pipe 73 necessary for mixing the urea water can be compactly arranged on the upper surface of the engine 5, and the urea mixing pipe 73 is heated by the heat generated on the diesel engine 5 side. Even in this operation, the temperature of the exhaust gas or urea aqueous solution in the urea mixing pipe 73 can be easily maintained, and the crystallization of urea water in the urea mixing pipe 73 can be reduced.
- the front chassis 23 as the left and right engine frames is extended forward from the diesel engine 5 and the radiator 41 or the front wheels 3 are arranged on the left and right front chassis 23.
- a urea water tank 91 is attached between the left and right front chassis 23. Therefore, the urea water tank 91 can be easily assembled using the space between the left and right front chassis 23, and the urea water tank 91 can be made compact inside the hood 6 (engine room 89) for covering the diesel engine 5. Can be placed.
- an exhaust gas purification device 61 (attachment structure of the second case 63) of the fourth embodiment will be described with reference to FIG.
- the second frame 63 is supported by the step frame 86, a column member 120 is welded and fixed to the front surface side of the step frame 86, and a pair of left and right case support plates is mounted on the front surface side of the column member 120.
- the body 121 is fixed by welding, the case support plate 121 is integrally fixed to the step frame 86, and a pair of left and right case support plates 121 are projected from the support member 120 toward the front.
- a case support bracket 122 is integrally welded and fixed to the lower surface side of the second case 63 in the outer peripheral surface of the second case 63 for purifying exhaust gas, and the case support bracket 122 is directed downward from the second case 63. Make it project.
- the case support bracket 122 is fitted between the pair of left and right case support plate bodies 121, and the upper bolt 126a and the lower bolt 126b are screwed to the left and right side surfaces of the pair of left and right case support plate bodies 121 and the case support bracket 122 from the left and right directions.
- the case support bracket 122 is fastened to the case support plate 121, and the second case 63 is detachably fixed to the step frame 86.
- the upper bolt 126a is detachably locked to the engagement notch 121a having the upward opening shape of the case support plate 121, and the lower bolt 126b is passed through the position adjusting long hole 121b of the case support plate 121. That is, when assembling the second case 63, as in the first embodiment, the case support bracket 122 is detachably fixed to the case support plate 121 via the bolts 126a and 126b, and the step frame 86 is used.
- the second case 63 is mounted on the front side of the cabin 7 (operating unit). Therefore, the second case 63 can be supported at a higher position than in the third embodiment.
- the step frame 86 supports the second case 63
- a column member 120 is welded and fixed to the front side of the step frame 86
- a pair of left and right case support plates are mounted on the rear surface side of the column member 120.
- the body 121 is fixed by welding
- the case support plate 121 is integrally fixed to the step frame 86
- a pair of left and right case support plates 121 are projected from the support member 120 toward the rear.
- a case support bracket 122 is integrally welded and fixed to the front surface side of the second case 63 out of the outer peripheral surface of the second case 63 for purifying exhaust gas, and the case support bracket 122 is moved forward from the second case 63. Make it project.
- the case support bracket 122 is fitted between the pair of left and right case support plate bodies 121, and the upper bolt 126a and the lower bolt 126b are screwed to the left and right side surfaces of the pair of left and right case support plate bodies 121 and the case support bracket 122 from the left and right directions.
- the case support bracket 122 is fastened to the case support plate 121, and the second case 63 is detachably fixed to the step frame 86.
- the upper bolt 126a is detachably locked to the engagement notch 121a having a rearward opening shape of the case support plate 121, and the lower bolt 126b is passed through the position adjusting long hole 121b of the case support plate 121. That is, when assembling the second case 63, the case support bracket 122 is detachably fixed to the case support plate 121 via the bolts 126a and 126b, and the lower surface side of the step frame 86, as in the first embodiment. The second case 63 is attached to the. Therefore, the second case 63 can be supported between the right side surface of the clutch case 22 and the inner surface side of the right getting on / off step 24.
- the second case 63 is supported in a horizontally long posture so that the exhaust gas movement direction of the second case 63 is left and right, but the exhaust gas movement direction of the second case 63 is It is also possible to support the second case 63 in a posture that is horizontally long in the front-rear direction so that the second case 63 and the tail pipe 81 extend rearward on the lower surface side of the boarding step 11.
- the lower side of the driving cabin 7 is below the boarding step 11 and between the one side surface of the traveling machine body 2 and the boarding / exiting step 24 via the case support plate 121 and the case support bracket 122.
- Two cases 63 are attached. Accordingly, the outside of the second case 63 can be protected at the getting-on / off step 24, and the space between the side surface of the traveling machine body 2 and the getting-on / off step 24 can be utilized to install the second case 63 in a compact manner.
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Abstract
Description
6 ボンネット
7 運転キャビン(運転部)
9 操縦ハンドル
62 第1ケース
63 第2ケース
73 尿素混合管
82 キャビンフレーム(前側角隅フレーム)
86 ステップフレーム(走行機体フレーム)
87 ケース架台(ケース支持体)
91 尿素水タンク
121 ケース支持板体(ケース支持体)
122 ケース支持ブラケット(ケース支持体)
Claims (10)
- オペレータが搭乗する運転部と、エンジンの排気ガス中の粒子状物質を除去する第1ケースと、前記エンジンの排気ガス中の窒素酸化物質を除去する第2ケースを備える作業車両において、
前記運転部を装設する走行機体フレームと、前記第2ケースを支持するケース支持体を備える構造であって、前記走行機体フレームに前記ケース支持体を配置し、前記走行機体フレームに前記ケース支持体を介して前記第2ケースを取付けたことを特徴とする作業車両。 - オペレータが搭乗する運転部をキャビンにて構成すると共に、前記走行機体フレームに前記キャビンを搭載する構造であって、前記走行機体フレームに前記ケース支持体を介して縦長姿勢の前記第2ケースの下部を取付けると共に、前記キャビンの前側角隅フレームに縦長姿勢の前記第2ケースの上部を連結させたことを特徴とする請求項1に記載の作業車両。
- 前記エンジンが内設されるボンネットの後方に前記運転部を配置し、排気ガス浄化用の尿素水タンクと、前記尿素水タンクから尿素水を供給する尿素混合管を備え、前記第1ケースの排気出口に前記尿素混合管を介して前記第2ケースの排気入口を接続する構造であって、前記運転部の操縦ハンドル部と前記エンジンの間に前記尿素水タンクを設置したことを特徴とする請求項1に記載の作業車両。
- 前記エンジンの後部と前記尿素水タンクの前部の間で、前記第1ケースの排気ガス移動方向に対して交叉する方向に、前記尿素混合管を延設させたことを特徴とする請求項3に記載の作業車両。
- 排気ガス浄化用の尿素水タンクと、前記尿素水タンクから尿素水を供給する尿素混合管を備え、前記第1ケースの排気出口に前記尿素混合管を介して前記第2ケースの排気入口を接続する構造であって、前記エンジン上部に前記第1ケースを支持させると共に、前記第1ケースの排気ガス移動方向と平行に、前記尿素混合管を延設させたことを特徴とする請求項1に記載の作業車両。
- 前記走行機体に装設する運転部の下面側のうち、前記走行機体の一側方の運転部下面側のステップフレームにケース支持体を配置し、前記運転部の下面側に前記ケース支持体を介して前記第2ケースを横長姿勢に取付けたことを特徴とする請求項1に記載の作業車両。
- 前記運転部の下面側のうち搭乗ステップの前端側に沿わせて前記ケース支持体を介して横長姿勢の前記第2ケースを取付けたことを特徴とする請求項6に記載の作業車両。
- 前記運転部の下面側のうち搭乗ステップの下方であって、前記走行機体の一側面と乗降ステップの間に前記ケース支持体を介して前記第2ケースを取付けたことを特徴とする請求項6に記載の作業車両。
- 排気ガス浄化用の尿素水タンクと、前記尿素水タンクから尿素水を供給する尿素混合管を備え、前記第1ケースの排気出口に前記尿素混合管を介して前記第2ケースの排気入口を接続する構造であって、前記エンジンの上面側に前記第1ケースを支持させると共に、前記第1ケースの排気ガス移動方向と平行に、前記尿素混合管を延設させたことを特徴とする請求項6に記載の作業車両。
- 前記エンジンから前方に向けて左右のエンジンフレームを延設させ、前記左右のエンジンフレームにラジエータまたは前車輪などを配置する構造であって、前記左右のエンジンフレーム間に前記尿素水タンクを取付けたことを特徴とする請求項9に記載の作業車両。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020217016469A KR20210066946A (ko) | 2013-04-26 | 2014-04-17 | 작업 차량 |
CN201480023537.8A CN105143630B (zh) | 2013-04-26 | 2014-04-17 | 拖拉机 |
US14/785,754 US9855837B2 (en) | 2013-04-26 | 2014-04-17 | Work vehicle |
KR1020157029329A KR102138732B1 (ko) | 2013-04-26 | 2014-04-17 | 작업 차량 |
KR1020207021358A KR20200091944A (ko) | 2013-04-26 | 2014-04-17 | 작업 차량 |
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JP2013110261A JP6177005B2 (ja) | 2013-05-24 | 2013-05-24 | 作業車両 |
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JP2022022274A (ja) * | 2015-10-23 | 2022-02-03 | ヤンマーパワーテクノロジー株式会社 | トラクタ |
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JP6343119B2 (ja) * | 2013-03-15 | 2018-06-13 | ヤンマー株式会社 | コンバインのエンジン装置 |
JP6066787B2 (ja) * | 2013-03-15 | 2017-01-25 | ヤンマー株式会社 | コンバインのエンジン装置 |
JP6297905B2 (ja) * | 2014-04-22 | 2018-03-20 | 日立建機株式会社 | 建設機械 |
DE102014118995A1 (de) * | 2014-12-18 | 2016-06-23 | Hamm Ag | Bodenbearbeitungsmaschine, insbesondere Bodenverdichter |
CN113079807B (zh) * | 2015-12-11 | 2023-07-21 | 洋马动力科技有限公司 | 联合收割机 |
JP6575447B2 (ja) * | 2016-06-30 | 2019-09-18 | 井関農機株式会社 | 作業車両 |
US10517238B2 (en) | 2017-09-18 | 2019-12-31 | Deere & Company | Implement optimization by automated adjustments |
DE102017124942A1 (de) * | 2017-10-25 | 2019-04-25 | Agco International Gmbh | Fahrzeug, insbesondere geländegängiges Fahrzeug, mit einer Abgasnachbehandlungseinrichtung |
KR102305927B1 (ko) | 2021-08-20 | 2021-09-27 | 충남대학교산학협력단 | 트랙터의 수소연료전지 플랫폼 및 위치제어 방법 |
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Also Published As
Publication number | Publication date |
---|---|
CN105143630B (zh) | 2017-11-24 |
KR102138732B1 (ko) | 2020-07-28 |
KR20200091944A (ko) | 2020-07-31 |
KR20210066946A (ko) | 2021-06-07 |
KR20160003653A (ko) | 2016-01-11 |
US9855837B2 (en) | 2018-01-02 |
US20160082830A1 (en) | 2016-03-24 |
CN105143630A (zh) | 2015-12-09 |
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