WO2014185118A1 - 作業車両 - Google Patents
作業車両 Download PDFInfo
- Publication number
- WO2014185118A1 WO2014185118A1 PCT/JP2014/054764 JP2014054764W WO2014185118A1 WO 2014185118 A1 WO2014185118 A1 WO 2014185118A1 JP 2014054764 W JP2014054764 W JP 2014054764W WO 2014185118 A1 WO2014185118 A1 WO 2014185118A1
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- WIPO (PCT)
- Prior art keywords
- engine
- reducing agent
- valve
- agent tank
- path
- Prior art date
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Classifications
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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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- 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
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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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- 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
- E02F9/0808—Improving mounting or assembling, e.g. frame elements, disposition of all the components on the superstructures
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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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- 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
- E02F9/20—Drives; Control devices
- E02F9/2004—Control mechanisms, e.g. control levers
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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
- E02F9/20—Drives; Control devices
- E02F9/2058—Electric or electro-mechanical or mechanical control devices of vehicle sub-units
- E02F9/2062—Control of propulsion units
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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
- E02F9/26—Indicating devices
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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
- F01N3/18—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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- 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]
- F01N3/208—Control of selective catalytic reduction [SCR], e.g. dosing of reducing agent
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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
- F01N3/24—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 constructional aspects of converting apparatus
- F01N3/28—Construction of catalytic reactors
- F01N3/2896—Liquid catalyst carrier
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2200/00—Type of vehicle
- B60Y2200/40—Special vehicles
- B60Y2200/41—Construction vehicles, e.g. graders, excavators
- B60Y2200/412—Excavators
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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
- F01N2340/00—Dimensional characteristics of the exhaust system, e.g. length, diameter or volume of the apparatus; Spatial arrangements of exhaust apparatuses
- F01N2340/04—Dimensional characteristics of the exhaust system, e.g. length, diameter or volume of the apparatus; Spatial arrangements of exhaust apparatuses characterised by the arrangement of an exhaust pipe, manifold or apparatus in relation to vehicle frame or particular vehicle parts
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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
- 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
- F01N2610/10—Adding substances to exhaust gases the substance being heated, e.g. by heating tank or supply line of the added substance
-
- 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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P2060/00—Cooling circuits using auxiliaries
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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
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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
- 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.
- Exhaust treatment devices are installed in work vehicles such as hydraulic excavators, bulldozers, and wheel loaders.
- Examples of the exhaust treatment device include a diesel particulate filter device (DPF), a diesel oxidation catalyst device (DOC), and a selective reduction catalyst device (SCR).
- DPF diesel particulate filter device
- DOC diesel oxidation catalyst device
- SCR selective reduction catalyst device
- the exhaust treatment device reduces nitrogen oxide (NOx) contained in the gas exhausted from the engine (exhaust gas) to a harmless gas by NOx reduction reaction.
- the work vehicle is provided with a reducing agent tank that stores a reducing agent for performing the NOx reduction reaction, and the reducing agent stored in the reducing agent tank is injected into the exhaust gas.
- Patent Document 1 in order to prevent freezing of the reducing agent stored in the reducing agent tank, the engine cooling water is guided into the reducing agent tank to exchange heat between the engine cooling water and the reducing agent. And a method for preventing the freezing of the reducing agent has been proposed.
- Patent Document 1 a part of the circulation path of the engine cooling water is branched, and a path branched into the reducing agent tank is inserted, whereby the cooling water and the reducing agent flowing through the passage are inserted.
- a method for preventing freezing of the reducing agent by heat exchange between them has been proposed.
- the present invention has been made to solve the above-described problems, and provides a work vehicle capable of sufficiently performing air bleeding in a path for supplying engine cooling water into a reducing agent tank. With the goal.
- a work vehicle includes an engine, an exhaust gas purification device, a reducing agent tank, an engine coolant circuit, a branch path, a valve, a reception unit, and a valve control unit.
- the exhaust gas purification device purifies nitrogen oxides in the exhaust gas discharged from the engine.
- the reducing agent tank stores the reducing agent supplied to the exhaust gas purification device.
- the engine coolant circuit includes a water pump that circulates coolant for cooling the engine by driving the engine in a circulation path.
- the branch path is provided for exchanging heat with the reducing agent in the reducing agent tank by the engine cooling water.
- the valve controls the supply of engine coolant to the branch path.
- the reception unit receives an operation instruction from the operator.
- the valve control unit instructs an opening operation on the valve in accordance with an operation instruction from the operator.
- the valve control unit instructs an opening operation for the valve in accordance with an operation instruction of the operator.
- the cooling water is supplied from the circulation path to the branch path, so that the air (air) in the branch path is pushed out to the circulation path and the air is sufficiently vented.
- the reception unit is a monitor device.
- the monitor device outputs an operation instruction to the valve control unit.
- the reception unit is a monitor device, and an operation instruction is output from the monitor device to the valve control unit.
- the operator can instruct
- the valve control unit is configured to instruct the valve to close after a predetermined period of time after instructing the valve to open.
- valve since the valve is instructed to close after a predetermined period of time, it is not necessary to request the operator's operation, and convenience can be improved.
- the reducing agent tank is provided on one end side in the longitudinal direction of the body frame, and the engine is provided on the other end side of the body frame.
- the reducing agent tank and the engine are respectively provided at one end and the other end side in the longitudinal direction of the vehicle body frame, it is possible to suppress the influence of the heat source engine on the reducing agent tank.
- the branch path has a low region provided in the course of the engine coolant flow and a high region higher than a low region provided downstream of the low region.
- the branch path should sufficiently perform air bleeding even for a configuration in which it is difficult to perform air bleeding, which is a case where the branch path has a region having a height difference from a low place to a high place. Is possible.
- a method for controlling a work vehicle includes: a step of outputting a command signal for increasing an engine speed; and an opening operation by an operator for a valve provided in a path for guiding engine coolant to a reducing agent tank. And a step of outputting an instruction signal for instructing the valve to open according to the reception of the instruction for the opening operation by the operator after increasing the number of revolutions of the engine.
- the method includes a step of outputting an instruction signal instructing an opening operation to a valve in accordance with reception of an opening operation instruction by an operator after increasing the engine speed.
- the valve is opened while the engine speed is increased, so that the cooling water is supplied to the path for supplying the cooling water into the reducing agent tank, and air bleeding is sufficiently performed.
- FIG. 1 is a diagram illustrating the appearance of a work vehicle 101 based on the embodiment.
- a hydraulic excavator As shown in FIG. 1, as a work vehicle 101 based on the embodiment, in this example, a hydraulic excavator will be mainly described as an example.
- the work vehicle 101 mainly includes a lower traveling body 1, an upper swing body 3, and a work implement 4.
- the work vehicle main body is composed of a lower traveling body 1 and an upper swing body 3.
- the lower traveling body 1 has a pair of left and right crawler belts.
- the upper turning body 3 is mounted so as to be turnable via a turning mechanism at the top of the lower traveling body 1.
- the work machine 4 is pivotally supported in the upper swing body 3 so as to be operable in the vertical direction, and performs work such as excavation of earth and sand.
- the work machine 4 includes a boom 5, an arm 6, and a bucket 7.
- the base of the boom 5 is movably connected to the upper swing body 3.
- the arm 6 is movably connected to the tip of the boom 5.
- the bucket 7 is movably connected to the tip of the arm 6.
- the upper swing body 3 includes a cab 8 and the like.
- FIG. 2 is a perspective view showing an internal configuration of the cab 8 based on the embodiment.
- the cab 8 includes a driver's seat 9, a traveling operation unit 10, an attachment pedal 15, a side window 16, an instrument panel 17, work implement levers 18 and 19, a lock It has a lever 20, a monitor device 21, a front window 22, and a vertical frame 23.
- the driver's seat 9 is provided in the central part of the driver's cab 8.
- the travel operation unit 10 is provided in front of the driver seat 9.
- the traveling operation unit 10 includes traveling levers 11 and 12 and traveling pedals 13 and 14.
- the travel pedals 13 and 14 are movable integrally with the travel levers 11 and 12.
- the lower traveling body 1 moves forward when the operator pushes the traveling levers 11 and 12 forward. Further, the lower traveling body 1 moves backward when the operator pulls the traveling levers 11 and 12 backward.
- the attachment pedal 15 is provided in the vicinity of the traveling operation unit 10.
- the instrument panel 17 is provided in the vicinity of the right side window 16 in FIG.
- Work machine levers 18 and 19 are provided on the left and right sides of the driver's seat 9.
- the work machine levers 18 and 19 are used to move the boom 5 up and down, rotate the arm 6 and the bucket 7, rotate the upper swing body 3, and the like.
- the lock lever 20 is provided in the vicinity of the work machine lever 18.
- the lock lever 20 is for stopping functions such as operation of the work implement 4, turning of the upper revolving structure 3, and traveling of the lower traveling structure 1.
- the movement of the work implement 4 and the like can be locked (restricted) by performing an operation to position the lock lever 20 in the vertical state (here, a pull-down operation of the lock lever).
- the monitor device 21 is provided below the vertical frame 23 that partitions the front window 22 and the one side window 16 of the cab 8, and displays the engine state, guidance information, warning information, and the like of the work vehicle 101. In addition, the monitor device 21 is provided so as to be able to accept setting instructions regarding various operations of the work vehicle 101.
- the engine state is, for example, the temperature of engine cooling water, the temperature of hydraulic oil, the remaining amount of fuel, and the like.
- the guidance information is, for example, a display that prompts inspection / maintenance of the engine of the work vehicle.
- the various operations include, for example, setting a predetermined mode (air bleeding mode).
- the warning information is information that needs to call attention to the operator.
- FIG. 3 is a simplified diagram illustrating the configuration of the control system for the work vehicle 101 based on the embodiment.
- the control system for the work vehicle 101 includes, as an example, work machine levers 18 and 19, travel levers 11 and 12, a lock lever 20, a monitor device 21, a first hydraulic pump 31A, A second hydraulic pump 31B, a swash plate driving device 32, a control valve 34, a hydraulic actuator 35, an engine 36, and an engine controller 38 are included.
- the control system includes a fuel dial 39, a rotation sensor 40, a work implement lever device 41, a pressure switch 42, a valve 43, a potentiometer 45, a starter switch 46, a pressure sensor 47, and a main controller 50.
- a radiator 71, a thermostat 76, a water pump 61, a circulation path 74, a branch path 70, a sensor 73, and an LLC (Long Life Coolant) valve 75 are further included.
- control system for work vehicle 101 further includes an exhaust gas purification device 60 and a reducing agent tank 69.
- the exhaust gas purification device 60 further includes an exhaust purification unit 62, a relay connection pipe (mixing pipe) 64, a selective reduction catalyst device 65, an exhaust cylinder 66, and a reducing agent injection device 84.
- the reducing agent injection device 84 includes a reducing agent supply path 83 and a reducing agent injection valve 68.
- the exhaust purification unit 62 includes a diesel oxidation catalyst device 62A and a diesel particulate filter device 62B.
- the first hydraulic pump 31A discharges hydraulic fluid used for driving the work machine 4 and the like.
- the second hydraulic pump 31B discharges oil that is used to generate hydraulic pressure (pilot pressure) corresponding to the operation of the work implement levers 18 and 19 and the travel levers 11 and 12.
- a swash plate driving device 32 is connected to the first hydraulic pump 31A.
- the swash plate driving device 32 is driven based on an instruction from the pump controller 33 to change the inclination angle of the swash plate of the first hydraulic pump 31A.
- a hydraulic actuator 35 is connected to the first hydraulic pump 31A via a control valve 34.
- the hydraulic actuator 35 is a boom cylinder, an arm cylinder, a bucket cylinder, a turning hydraulic motor, a traveling hydraulic motor, or the like.
- the control valve 34 is connected to the work machine lever device 41.
- the work implement lever device 41 outputs a pilot pressure corresponding to the operation direction and / or the operation amount of the work implement levers 18 and 19 and the travel levers 11 and 12 to the control valve 34.
- the control valve 34 controls the hydraulic actuator 35 according to the pilot pressure.
- the work machine levers 18 and 19, the travel levers 11 and 12 and the lock lever 20 are connected to the second hydraulic pump 31B.
- the pressure sensor 47 is connected to the work machine lever device 41.
- the pressure sensor 47 outputs a lever operation signal corresponding to the operation state of the work machine levers 18 and 19 and the travel levers 11 and 12 to the main controller 50.
- the pump controller 33 follows the instruction from the main controller 50 according to the pump absorption torque set according to the work amount, the engine speed set by the fuel dial 39, the actual engine speed, etc.
- the first hydraulic pump 31 ⁇ / b> A performs control so as to absorb the best matching torque at each output point of the engine 36.
- the engine 36 has a drive shaft connected to the first hydraulic pump 31A and the second hydraulic pump 31B.
- the engine controller 38 controls the operation of the engine 36 in accordance with instructions from the main controller 50.
- the engine 36 is a diesel engine as an example.
- the engine speed of the engine 36 is set by the fuel dial 39 or the like, and the actual engine speed is detected by the rotation sensor 40.
- the rotation sensor 40 is connected to the main controller 50.
- the fuel dial 39 is provided with a potentiometer 45.
- the amount of operation of the fuel dial 39 is detected by the potentiometer 45, and a dial command value (also referred to as a dial command value) relating to the rotational speed of the engine 36 is output to the engine controller 38.
- the target rotational speed of the engine 36 is adjusted according to the dial command value of the fuel dial 39.
- the engine controller 38 controls the fuel injection amount injected by the fuel injection device based on the dial command value according to the instruction from the main controller 50, and adjusts the rotation speed of the engine 36. Further, the engine controller 38 adjusts the engine speed of the engine 36 in accordance with a control instruction from the main controller 50 to the first hydraulic pump 31A.
- the starter switch 46 is connected to the engine controller 38. When the operator operates the starter switch 46 (set to start), a start signal is output to the engine controller 38 and the engine 36 is started.
- the main controller 50 is a controller that controls the entire work vehicle 101, and includes a CPU (Central Processing Unit), a nonvolatile memory, a timer, and the like.
- the main controller 50 controls the engine controller 38, the monitor device 21, and the like.
- the main controller 50 and the engine controller 38 have been described with respect to different configurations, but a common controller can also be used.
- the pressure switch 42 is connected to the lock lever 20.
- the pressure switch 42 detects the operation when the lock lever 20 is operated to the lock side, and sends a signal to the valve (solenoid valve) 43.
- the valve 43 shuts off the supply of oil, so that it is possible to stop functions such as operation of the work implement 4, turning of the upper turning body 3, and running of the lower running body 1.
- the pressure switch 42 also sends a similar signal to the main controller 50.
- the water pump 61 circulates engine cooling water in the circulation path 74 by driving the engine 36.
- the circulation path 74 is connected to a radiator 71 that cools engine coolant via a thermostat 76.
- the thermostat 76 opens when the engine cooling water reaches a predetermined temperature, and closes when the engine cooling water is lower than the predetermined temperature. Thereby, when the engine cooling water reaches a predetermined temperature, the engine cooling water flows into the radiator 71, and when the engine cooling water is lower than the predetermined temperature, the engine cooling water does not flow into the radiator 71.
- a branch path 70 is provided in the circulation path 74.
- the branch path 70 is inserted into the reducing agent tank 69 with the branch point A as the start point, and the branch point B is the end point.
- the branch path 70 is inserted into the reducing agent tank 69.
- heat exchange is performed between the engine coolant flowing in the branch path and the reducing agent stored in the reducing agent tank 69.
- the branch path 70 is provided with an LLC valve 75 in the vicinity of the branch point A.
- the LLC valve 75 performs an opening / closing operation in accordance with an instruction from the main controller 50. In accordance with the opening operation instruction from the main controller 50, the LLC valve 75 is opened.
- engine coolant is supplied from the branch point A of the circulation path 74 into the reducing agent tank 69 via the branch path 70, and the engine coolant returns to the branch point B of the circulation path 74.
- a sensor 73 is provided in the circulation path 74 to detect the state of engine coolant in the path.
- the temperature of the engine coolant is detected as the state of the engine coolant.
- the sensor 73 outputs the detection result detected from the circulation path 74 to the main controller 50.
- the radiator 71 is provided with a supply port for supplying engine coolant.
- the replenishing port also functions as an air vent for air (air) accumulated in a path through which engine coolant is circulated.
- the diesel oxidation catalyst device 62A has a function of reducing nitrogen monoxide (NO) among nitrogen oxides (NOx) in the exhaust gas of the engine 36 and increasing nitrogen dioxide (NO 2 ).
- the diesel particulate filter device 62B is a device that processes the exhaust from the engine 36.
- the diesel particulate filter device 62B is configured to collect particulate matter contained in the exhaust of the engine 36 with a filter and incinerate the collected particulate matter.
- the filter is made of ceramic, for example.
- the selective reduction catalyst device 65 is for reducing nitrogen oxides NOx using ammonia (NH 3 ) obtained by, for example, hydrolyzing urea water as a reducing agent.
- the selective reduction catalyst device 65 is applied in principle that nitrogen oxide (NOx) is reduced to nitrogen (N 2 ) and water (H 2 O) by chemically reacting with ammonia (NH 3 ). It is a thing.
- the work vehicle 101 is equipped with a reducing agent tank 69 containing, for example, urea water.
- the reducing agent is not limited to urea water, and may be any one that can reduce nitrogen oxide NOx.
- the relay connection pipe (mixing pipe) 64 connects the diesel particulate filter device 62B and the selective reduction catalyst device 65.
- a reducing agent is injected and mixed with respect to the exhaust gas directed from the diesel particulate filter device to the selective reduction catalyst device 65.
- the reducing agent injection device 84 injects the reducing agent (urea water) pumped from the reducing agent tank 69 into the exhaust gas through the reducing agent supply path 83 and the reducing agent injection valve 68.
- the sensor 72 is provided in the reducing agent tank 69 and detects the state of the reducing agent stored in the reducing agent tank 69. In this example, the temperature of the reducing agent is detected as the state of the reducing agent. Then, the sensor 72 outputs the detection result detected from the reducing agent tank 69 to the main controller 50.
- the exhaust cylinder 66 is connected to the selective reduction catalyst device 65, and is used for discharging the exhaust gas after passing through the selective reduction catalyst device 65 into the atmosphere.
- the engine 36, the exhaust gas purification device 60, the reducing agent tank 69, the water pump 61 and the circulation path 74, the branch path 70, the LLC valve 75, and the main controller 50 are respectively referred to as the “engine”, “exhaust gas purification apparatus” of the present invention. ], “Reducing agent tank”, “engine coolant circuit”, “branch path”, “valve”, “valve control unit”.
- FIG. 4 is a diagram illustrating a path connected to the reducing agent tank 69 based on the present embodiment.
- the engine 36 and the exhaust treatment unit are supported by the vehicle body frame 95 independently of each other.
- the support for supporting the exhaust treatment unit on the frame there are two plate plates 91, four vertical frames (column members) 92, a horizontal frame 93, and a bracket 94. ing.
- Each of the two plate plates 91 has a flat plate shape and is attached to the vehicle body frame 95.
- Each of the four vertical frames 92 has a pillar shape and is attached to the plate plate 91.
- Each of the four vertical frames 92 extends upward from a mounting position on the plate plate 91.
- the horizontal frame 93 is attached to the vertical frame 92.
- the horizontal frame 93 is a part for supporting the exhaust purification unit 62 and the selective reduction catalyst device 65.
- the bracket 94 has a flat plate shape. It is attached to the horizontal frame 93. A configuration in which a relay connection pipe (mixing pipe) 64 and a reducing agent tank 69 are connected by a urea water pipe (reducing agent supply path) is shown.
- the selective reduction catalyst device 65 is for selectively reducing nitrogen oxides NOx using, for example, ammonia obtained by hydrolyzing urea water. For this reason, a device for supplying urea water to the selective catalytic reduction device 65 is required.
- This reducing agent injection device 84 mainly has a reducing agent injection valve 68 and a reducing agent supply path 83.
- the reducing agent tank 69 is configured to store urea water.
- the reducing agent tank 69 is disposed, for example, outside the engine room, and is supported by the vehicle body frame 95.
- the reducing agent supply path 83 connects the reducing agent tank 69 and the mixing pipe 64. This reducing agent supply path 83 allows the urea water stored in the reducing agent tank 69 to be guided to the mixing pipe 64.
- the urea water stored in the reducing agent tank 69 is injected and supplied from the reducing agent injection valve 68 into the mixing pipe 64 through the reducing agent supply path 83.
- the reducing agent supply path 83 is connected from the same side (front side in the figure) as the connecting portion with the exhaust purification unit 62 in the longitudinal direction (X direction) of the mixing pipe 64. Yes.
- the connecting portion of the reducing agent supply path 83 to the mixing pipe 64 is upstream of the exhaust path in the mixing pipe 64. Thereby, the urea water injected and supplied to the mixing pipe 64 is evenly mixed with the exhaust gas from the upstream side to the downstream side in the mixing pipe 64.
- a water pump 61 is provided adjacent to the engine 36, and the water pump 61 is connected to the circulation path 74. Then, the branch points A and B of the circulation path 74 and the branch path 70 are connected. The branch path 70 with respect to the branch points A and B of the circulation path 74 is provided in a detachable state.
- the body frame 95 is provided with vertical frame frames 96A and 96B on which the work implement 4 is mounted, and the reducing agent supply path 83 is arranged along the vertical frame frame 96A (X direction). .
- branch path 70 is arranged along the vertical frame 96A (X direction) similarly to the reducing agent supply path 83.
- both the reducing agent supply path 83 and the branch path 70 are arranged in the vicinity of the reducing agent tank 69 along the direction from the lower surface portion to the upper surface portion (Z direction) of the reducing agent tank 69. .
- the reducing agent tank 69 is disposed at the front end (front side in the figure) in the longitudinal direction (X direction) of the body frame 95, while the engine 36 is disposed in the longitudinal direction of the body frame 95. It is arrange
- FIG. 5 is a view for explaining the internal state of the reducing agent tank 69 based on the present embodiment.
- a branch path 70 is led into the reducing agent tank 69.
- the branch path 70 is disposed in the vicinity of the reducing agent tank 69 along the direction from the lower surface portion to the upper surface portion of the reducing agent tank 69, is inserted from the upper surface side of the reducing agent tank 69, and reaches the bottom portion in the reducing agent tank 69. Thereafter, it is turned back and extracted from the upper surface side of the reducing agent tank 69 again.
- the branch path 70 has a region where a height difference from a low place to a high place is provided in the middle of the path.
- the branch path 70 has a low region provided in the course of the engine coolant flow and a high region provided downstream of the low region.
- the branch path 70 has a configuration in which a low region that is a lower surface portion near the reducing agent tank 69, a high region that is the upper surface side of the reducing agent tank 69, and a low region that is the bottom portion in the reducing agent tank 69 are continuous.
- the high region of the branch path 70 is provided between a low region in front of the reducing agent tank 69 and a low region in the reducing agent tank 69.
- FIG. 6 is a diagram illustrating the configuration of the monitor device 21 based on the embodiment. As shown in FIG. 6, the monitor device 21 includes an input unit 211, a display unit 212, and a display control unit 213.
- the input unit 211 receives input of various information.
- the monitor device 21 is connected to the main controller 50, and the input received by the input unit 211 is output to the main controller 50.
- the display unit 212 is realized using a liquid crystal screen or the like.
- the display control unit 213 controls display contents on the display unit 212. Specifically, the display control unit 213 displays information related to the operation of the work vehicle 101 in accordance with an instruction from the main controller 50.
- the information includes engine state information or guidance information, warning information, and the like.
- the input unit 211 will be specifically described.
- the input unit 211 includes a plurality of switches.
- the input unit 211 includes function switches F1 to F6.
- the function switches F1 to F6 are positioned below the display unit 212 and are displayed as “F1” to “F6”, respectively. Icons displayed on the display unit 212 above each switch (for example, guidance icons I1 to I3) ) Is a switch for inputting a signal corresponding to.
- the input unit 211 includes a decel switch 111, an operation mode selection switch 112, a travel speed stage selection switch 113, a buzzer cancellation switch 114, a wiper switch 115, which are provided below the function switches F1 to F6.
- a washer switch 116 and an air conditioner switch 117 are provided.
- the decel switch 111 is a switch for executing decel control for reducing the engine speed of the engine 36 to a predetermined speed after a predetermined time after the work machine levers 18 and 19 return to the neutral position.
- the “neutral position” means that the work implement levers 18 and 19 are not operated (no work state).
- the operation mode selection switch 112 is a switch for selecting an operation mode of the work vehicle 101 from a plurality of operation modes.
- the traveling speed stage selection switch 113 is a switch for selecting the traveling speed stage of the work vehicle 101 from a plurality of traveling speed stages.
- the buzzer cancel switch 114 is a switch for canceling a buzzer sound that is generated when the work vehicle 101 enters a predetermined warning state.
- the wiper switch 115 is a switch for operating a wiper (not shown) provided on the windshield of the cab 8 (see FIG. 2) of the work vehicle 101.
- the washer switch 116 is a switch that operates a washer (not shown) that injects cleaning water onto the windshield.
- the air conditioner switch 117 is a switch for operating various functions of the air conditioner in the cab 8.
- a touch panel of a resistive film type or the like can be applied as the input unit 211.
- the standard screen 301 is generated by the display control unit 213 based on screen data stored in advance in a memory (not shown). The same applies to other screens.
- an engine water temperature gauge G1 a hydraulic oil temperature gauge G2, and a fuel level gauge G3 are displayed side by side, and the gauge needles change based on sensor signals from the corresponding sensors.
- a fuel consumption gauge G4 is displayed on the right side of the fuel level gauge G3.
- a clock W is displayed in the center above the display unit 212.
- an operation mode icon IU indicating the set operation mode
- a travel speed stage icon IS indicating the set travel speed stage are displayed.
- the letter “P” is displayed as the operation mode icon IU. This is a display when the operation mode is set to the power mode used in normal excavation work or the like.
- the letter “E” is displayed as the operation mode icon IU.
- Guidance icons I1 to I3 corresponding to the function switches F4 to F6 are displayed at positions below the standard screen 301 and above the function switches F4 to F6, respectively.
- the guidance icon I1 is an icon that means switching the screen displayed on the display unit 212 to the camera screen.
- the camera screen is a screen that is installed on the exterior of the work vehicle 101 and outputs an image signal acquired by a CCD camera or the like (not shown) that captures the outside of the work vehicle 101.
- the guidance icon I2 is an icon that means switching the display of the clock W to the display of the service meter.
- the guidance icon I3 is an icon that means switching the screen displayed on the display unit 212 to the user mode screen. Therefore, for example, when the function switch F4 corresponding to the guidance icon I1 is pressed, the screen displayed on the display unit 212 is switched to the camera screen.
- FIG. 7 is a diagram illustrating an example of an air bleeding mode selection screen based on the embodiment. As shown in FIG. 7, the air bleeding mode selection screen 302 is displayed as a transition from the standard screen 301 by selecting a predetermined function switch as an example. The air bleeding mode selection screen 301 is operated before the branch path 70 is used.
- the air bleeding mode selection screen 302 shows a screen that can accept an input instruction to open or close the LLC valve.
- the LLC valve 75 When the operator selects the “open” item 303 and instructs execution, the LLC valve 75 is set to the open state. It is also possible to set the LLC valve 75 in the closed state by placing the cursor at the position of the “closed” item 304 and instructing the execution.
- the monitor device 21 serves as a reception unit that receives an operation instruction from the operator.
- the LLC valve 75 may be automatically set to a closed state after a predetermined period sufficient to determine that the air bleeding has been completed. This process can improve the convenience for the operator.
- a branch path 70 is provided to exchange heat with the reducing agent in the reducing agent tank 69.
- the LLC valve 75 is opened by selecting the “open” item 303 on the air bleeding mode selection screen 302 before using the branch path 70, and the engine coolant is supplied to the branch path 70. . Thereby, the air (air) in the branch path 70 is pushed out to the circulation path 74. And in the radiator 71 connected with the circulation path
- the monitor device 21 receives an instruction to open / close the LLC valve.
- the present invention is not limited to the monitor device 21, and members such as buttons for receiving instructions to open / close the LLC valve are independent of the monitor device 21. And an instruction to open and close the LLC valve may be received using a member such as the button.
- FIG. 8 is a diagram for explaining the engine speed, the engine coolant temperature, and the start timing of the air bleeding mode based on the present embodiment.
- the left vertical axis is the engine speed
- the horizontal axis is time t.
- the right vertical axis is the engine coolant temperature.
- the line L1 indicates the engine speed
- the line L2 indicates the coolant temperature.
- the engine speed of the engine 36 is set to the engine speed F1 in a low idling state.
- the temperature of the engine cooling water increases as the engine 36 is started.
- the engine coolant temperature is detected by a sensor 73. The case where the engine coolant temperature reaches X ° C. at time T1 is shown.
- the engine speed is set to the engine speed F2 in the high idling state. This is because if the engine speed is increased when the engine coolant temperature is low, the load on the engine 36 increases.
- the initial state is X ° C.
- the engine speed is initially set to a high idling state. You may make it set to F2.
- the air bleeding mode is turned on (opened) in the high idling state of the engine speed F2, and the air of the circulation path 74 is removed.
- the water pump 61 of the present embodiment obtains driving force from the engine 36 and supplies engine cooling water to the circulation path 74. Therefore, the supply pressure of the engine cooling water to the circulation path 74 of the water pump 61 increases as the rotational speed of the engine 36 increases. Accordingly, when the LLC valve 75 of the circulation path 74 is opened in the high idling state at the engine speed F2, the engine coolant is supplied in a state where the supply pressure to the branch path 70 is high. Therefore, it is possible to vent the air in the branch path 70 with the engine coolant having a high supply pressure, and the air (air) in the branch path 70 is pushed out to the circulation path 74 to effectively execute the air vent. .
- FIG. 9 is a flowchart for explaining air bleeding mode processing in the main controller 50 of the work vehicle 101 based on the embodiment.
- step S1 it is determined whether or not the engine has been started.
- the main controller 50 determines whether or not the engine 36 has been started by the engine controller 38.
- step S2 the engine coolant temperature is detected.
- the main controller 50 detects the engine coolant temperature from the sensor 73.
- step S3 it is determined whether or not the engine coolant temperature is less than Q ° C. (step S3).
- the main controller 50 determines whether the engine coolant temperature is lower than Q ° C. based on the detection result acquired from the sensor 73.
- step S3 When it is determined in step S3 that the engine coolant temperature is lower than Q ° C. (YES in step S3), this state is maintained, and when it is determined that the engine coolant temperature is not lower than Q ° C. (step S3).
- step S4 a high rotational speed is set.
- the main controller 50 determines that the engine coolant temperature is not lower than Q ° C., the main controller 50 instructs the engine controller 38 so that the engine speed becomes a high speed.
- the air bleeding mode is set to be effective (step S5).
- the main controller 50 sets the instruction to open / close the LLC valve on the air bleeding mode selection screen 302 so that it can be accepted.
- the selection of the predetermined function switch described in FIG. 6 may be set to be valid.
- the air bleeding mode is set to be effective after the engine speed has been set to a high speed.
- the present invention is not limited to this method. This may be possible even before the number is set to a high speed, and the air bleeding mode instruction may be executed after the engine speed is set to a high speed.
- step S6 it is determined whether or not there is an opening instruction.
- the main controller 50 determines whether or not the “open” item 303 has been selected on the air bleeding mode selection screen 302.
- step S6 it waits until there is an opening instruction, and when it is determined that there is an opening instruction (YES in step S6), the LLC valve 75 is set to the open state.
- the main controller 50 instructs the LLC valve 75 to be in the open state.
- step S8 it is determined whether or not a predetermined period has elapsed.
- the main controller 50 determines whether or not a predetermined period has elapsed after opening the LLC valve 75.
- the predetermined period is set to a period longer than the time from when the engine 36 is started until the temperature of the engine cooling water rises and the thermostat 76 opens.
- the predetermined period can be set to about 15 minutes, for example. Note that this period is an example, and may be set to any length as long as the air bleeding process is possible.
- step S8 If it is determined in step S8 that the predetermined period has elapsed (YES in step S8), the LLC valve 75 is set to a closed state (step S9).
- the main controller 50 instructs the LLC valve 75 to be closed when a predetermined period has elapsed after opening the LLC valve 75.
- the process ends (END).
- the LLC valve 75 can be set to an open state while the engine is set to a high rotation speed, and air can be vented from the branch path 70.
- the branch path 70 when the path length of the branch path 70 is long or when a height difference (for example, a height difference such as the height of the reducing agent tank 69) is provided in the middle of the branch path 70, the branch path 70. Pressure for pushing out the air (air) from the branch path 70 to the circulation path 74 is required.
- the pump pressure of the water pump 61 When the pump pressure of the water pump 61 is low, there is a possibility that the air can not be sufficiently exhausted. However, the system of the present embodiment increases the pump pressure of the water pump 61 and cools the engine even with this configuration. Since water can be supplied to the branch path 70, the air can be sufficiently removed.
- a hydraulic excavator has been described as an example of a work vehicle.
- the present invention can be applied to a work vehicle such as a bulldozer or a wheel loader as long as it is a working machine provided with an engine 36. It can be applied to anything.
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Abstract
Description
<全体構成>
図1は、実施形態に基づく作業車両101の外観を説明する図である。
図2は、実施形態に基づく運転室8の内部構成を示す斜視図である。
図3は、実施形態に基づく作業車両101の制御システムの構成を示す簡略図である。
排気浄化ユニット62は、ディーゼル酸化触媒装置62Aと、ディーゼル微粒子捕集フィルター装置62Bとを含む。
第2油圧ポンプ31Bは、作業機レバー18,19、走行レバー11,12の操作に応じた油圧(パイロット圧)を発生させるために利用される油を吐出する。第1油圧ポンプ31Aには、斜板駆動装置32が接続されている。
図4は、本実施形態に基づく還元剤タンク69に接続される経路を説明する図である。
図5を参照して、還元剤タンク69内には、分岐経路70が導かれている。分岐経路70は、還元剤タンク69付近において還元剤タンク69の下面部から上面部の方向に沿って配置され、還元剤タンク69の上面側から挿通され、還元剤タンク69内の底部に到達した後、折り返して再び還元剤タンク69の上面側から抜き出される。
次に、モニタ装置21の構成を説明する。
図6に示されるように、モニタ装置21は、入力部211と、表示部212と、表示制御部213とを含む。
表示制御部213は、表示部212の表示内容を制御する。具体的には、表示制御部213は、メインコントローラ50からの指示に従って作業車両101の動作に関する情報を表示する。当該情報には、エンジン状態の情報あるいはガイダンス情報、警告情報等が含まれる。
図7に示されるように、エア抜きモード選択画面302は、一例として所定のファンクションスイッチを選択することにより標準画面301から遷移して表示される。当該エア抜きモード選択画面301は、分岐経路70を利用する前に操作される。
図9は、実施形態に基づく作業車両101のメインコントローラ50におけるエア抜きモード処理を説明するフロー図である。
当該処理により、エンジンを高回転数に設定した状態でLLCバルブ75を開状態に設定して分岐経路70のエア抜きを実行することが可能である。
Claims (6)
- エンジンと、
前記エンジンから排出される排気ガス中の窒素酸化物を浄化する排気ガス浄化装置と、
前記排気ガス浄化装置に供給する還元剤を蓄える還元剤タンクと、
前記エンジンの駆動により前記エンジンを冷却するためのエンジン冷却水を循環経路に循環させる水ポンプを含む、エンジン冷却水回路と、
前記エンジン冷却水により前記還元剤タンク内の前記還元剤との間で熱交換するために設けられる分岐経路と、
前記分岐経路に対して前記エンジン冷却水への供給を制御するバルブと、
操作者の操作指示を受け付ける受付部と、
前記操作者の前記操作指示に従って前記バルブに対する開動作を指示するバルブ制御部とを備える、作業車両。 - 前記受付部は、モニタ装置であり、
前記モニタ装置は、前記操作指示を前記バルブ制御部に出力する、請求項1記載の作業車両。 - 前記バルブ制御部は、前記バルブに対する前記開動作を指示後、所定期間経過後に前記バルブに対して閉動作を指示するように構成されている、請求項1または2記載の作業車両。
- 前記還元剤タンクは、車体フレームの長手方向の一方端側に設けられ、前記エンジンは、前記車体フレームの他方端側に設けられる、請求項1~3のいずれか1項に記載の作業車両。
- 前記分岐経路は、前記エンジン冷却水が流れる経路途中に設けられる低領域と、前記低領域よりも下流側に設けられた前記低領域よりも高い高領域とを有する、請求項1~4のいずれか1項に記載の作業車両。
- エンジンの回転数を上昇させる指令信号を出力するステップと、
還元剤タンクにエンジン冷却水を導く経路に設けられたバルブに対する、操作者による開動作の指示を受け付けるステップと、
前記エンジンの回転数を上昇させた後に、前記操作者による前記開動作の指示の受け付けに従って前記バルブに対して開動作を指示する指示信号を出力するステップとを備える、作業車両の制御方法。
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DE112014000021.3T DE112014000021B4 (de) | 2014-02-26 | 2014-02-26 | Baufahrzeug |
US14/367,968 US9303388B2 (en) | 2014-02-26 | 2014-02-26 | Work vehicle |
KR1020157017486A KR101630588B1 (ko) | 2014-02-26 | 2014-02-26 | 작업 차량 |
CN201480000247.1A CN104114826B (zh) | 2014-02-26 | 2014-02-26 | 作业车辆 |
JP2014526010A JP5685679B1 (ja) | 2014-02-26 | 2014-02-26 | 作業車両 |
PCT/JP2014/054764 WO2014185118A1 (ja) | 2014-02-26 | 2014-02-26 | 作業車両 |
IN6420DEN2015 IN2015DN06420A (ja) | 2014-02-26 | 2014-02-26 |
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JP5940107B2 (ja) * | 2014-03-17 | 2016-06-29 | 日立建機株式会社 | 建設機械の尿素水供給システム |
USD834064S1 (en) * | 2014-04-17 | 2018-11-20 | Deere & Company | Display screen or portion thereof with icon |
JP6297905B2 (ja) * | 2014-04-22 | 2018-03-20 | 日立建機株式会社 | 建設機械 |
JP6307019B2 (ja) * | 2014-11-28 | 2018-04-04 | 日立建機株式会社 | 建設機械 |
CN106103854B (zh) * | 2014-12-26 | 2019-03-08 | 株式会社小松制作所 | 作业机械的状态信息显示装置、作业机械的警告显示方法以及作业机械的警告显示程序 |
CN106320420B (zh) * | 2015-07-02 | 2021-05-25 | 住友建机株式会社 | 混合式挖土机 |
JP6385323B2 (ja) * | 2015-10-06 | 2018-09-05 | 日立建機株式会社 | 建設機械 |
DE102016104358B4 (de) * | 2016-03-10 | 2019-11-07 | Manitowoc Crane Group France Sas | Verfahren zum Ermitteln der Tragfähigkeit eines Krans sowie Kran |
JP7002251B2 (ja) * | 2017-08-31 | 2022-01-20 | 川崎重工業株式会社 | 取り外し判定装置、及び制御ユニット |
JP2019170257A (ja) * | 2018-03-28 | 2019-10-10 | 株式会社クボタ | 収穫機 |
JP7133428B2 (ja) * | 2018-10-15 | 2022-09-08 | 日立建機株式会社 | 油圧ショベル |
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DE112014000021T5 (de) | 2015-10-01 |
CN104114826B (zh) | 2015-10-21 |
JP5685679B1 (ja) | 2015-03-18 |
CN104114826A (zh) | 2014-10-22 |
DE112014000021B4 (de) | 2017-11-09 |
KR20150119841A (ko) | 2015-10-26 |
IN2015DN06420A (ja) | 2015-07-31 |
KR101630588B1 (ko) | 2016-06-14 |
JPWO2014185118A1 (ja) | 2017-02-23 |
US20150240448A1 (en) | 2015-08-27 |
US9303388B2 (en) | 2016-04-05 |
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