JP2013096291A - Dpf regeneration control device of working vehicle, and combine harvester including the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a worker easily create a working plan by informing the worker whether automatic regenerating processing starts before work in a work object region is ended in a working vehicle.SOLUTION: When the working vehicle travels while driving a working section (6), a necessary moving distance required until the work is ended is calculated or a necessary time required until the work is ended is calculated. Based on the moving average of the accumulation amount of particulate matter estimated by a PM accumulation amount estimating means, the regeneration delay time or regeneration delay distance until the accumulation amount of the particulate matter in a DPF (10) arrives at a preset set accumulation amount is calculated. When the regeneration delay time is longer than the necessary time or the regeneration delay distance is longer than the necessary distance, it is informed that the automatic regenerating processing of the DPF (10) during work is performed.

Description

  The present invention relates to a DPF regeneration control device for a work vehicle and a combine equipped with the DPF regeneration control device for the work vehicle.

  Diesel engines are used for working vehicles such as combines. As exhaust gas purification devices, DOC (Diesel Oxidation Catalyst) that raises and removes nitrogen oxides by heating and nitrogen oxides are hydrolyzed using urea as a catalyst. Japanese Patent Application Laid-Open No. H10-228667 describes a technology that is configured by SCR (Selective Catalytic Reduction) that reacts ammonia with nitrogen oxides to convert nitrogen oxides into harmless nitrogen.

Further, NO ₂ is generated from NO in the exhaust gas by the action of an oxidation catalyst of an oxidation catalyst converter (hereinafter referred to as “DOC”) arranged in the exhaust gas passage, and a diesel particulate filter (hereinafter referred to as “NO _2”) is used as an oxidizing material. Patent Document 2 discloses a technique for incinerating and removing particulate matter (Particulate Matter, hereinafter referred to as “PM”) such as black smoke in exhaust gas collected by “DPF”.

  Furthermore, in Patent Document 3, since the regeneration process for incineration and removal of PM collected by the DPF becomes high temperature, there is provided a notification device for notifying the arrival of the movement timing with a margin to move to a safe regeneration process place. The provided work machine is described.

JP 2011-24510 A Japanese Patent No. 2006-97652 Japanese Patent No. 2011-7105

  If PM continues to accumulate in the DPF, troubles such as an increase in exhaust pressure occur. Therefore, it is necessary to incinerate and remove the accumulated PM as needed to regenerate the DPF. When burned, the DPF may be melted or burned out, so it is necessary to incinerate and remove the DPF before the allowable amount is exceeded. The DPF regeneration process includes an automatic PDF regeneration process that incinerates PM by raising the DPF to a high temperature while traveling, and a manual PDF regeneration that completely stops traveling and adjusts fuel injection of the engine to incinerate PM. There is processing.

  In the technique described in Patent Document 3, the movement data of a position measuring device using GPS (Global Positioning System) is used to obtain a safe reproduction processing place using an actual measurement time or an actual distance from the work position to the reproduction processing place. However, with this technique, it is impossible to determine whether or not the DPF regeneration process is to be executed before the work is completed.

  The present invention automatically recognizes the area of the work target area of the work vehicle and informs the worker whether or not the automatic regeneration process starts before the work in the work target area is completed. It is an object of the present invention to provide a working vehicle that makes it easy to make a plan and can efficiently perform harvesting work.

The problems of the present invention are solved by the following technical means.
According to the first aspect of the present invention, there is provided a DPF (10) that collects particulate matter contained in exhaust gas from the engine (7), and a temperature inside the DPF (10) is increased to thereby remove the particulate matter. A temperature raising means for performing automatic regeneration processing to be removed, a PM accumulation amount estimating means for estimating the accumulation amount of particulate matter in the DPF (10), a movement distance calculating means for calculating the movement distance of the airframe, and set in advance The unworked area remaining in the work target area is automatically calculated from the area of the work target area, the movement distance of the machine body calculated by the movement distance calculation means, and the work width of the work unit (6). In the state where the vehicle travels while driving the work section (6), the work is calculated from the unworked area (Am) calculated by the unworked area calculation means and the work width of the work section (6). Travel required to complete Or the time required to complete the work is calculated from the unworked area (Am) calculated by the unworked area calculation means, the traveling speed of the machine, and the work width of the work part (6). , A regeneration grace time from the moving average of the particulate matter deposition amount estimated by the PM deposition amount estimation means until the particulate matter deposition amount in the DPF (10) reaches a preset deposition amount or The regeneration grace distance is calculated, and when the regeneration grace time is greater than the required time or the regeneration grace distance is greater than the required movement distance, the automatic regeneration processing of the DPF (10) is performed during the work. The DPF regeneration control device for a working vehicle is provided with a DPF regeneration informing means for informing that the vehicle is informed.

  According to the second aspect of the present invention, when the closed area is formed by the movement path in a state in which the working unit (6) is driven, the unworked area calculating means calculates the working width of the working unit (6). The DPF regeneration control device for a working vehicle according to claim 1, wherein an unworked area (Am) in a closed region is calculated from a moving route of the working vehicle.

The invention according to claim 3 is the DPF regeneration control device for a working vehicle according to claim 1 or 2, wherein the regeneration grace time or the regeneration grace distance is notified by the DPF regeneration notification means.
According to a fourth aspect of the present invention, when the deposition amount of the particulate matter detected by the PM deposition amount estimation unit increases in a state where the automatic regeneration process of the DPF (10) is performed by the temperature raising unit, 4. The DPF of the working vehicle according to claim 1, wherein the manual regeneration grace time or the manual regeneration grace distance until reaching the manual regeneration accumulation amount larger than the set accumulation amount is notified by the DPF regeneration informing means. Let it be a playback control device.

  According to a fifth aspect of the present invention, there is provided a combine including the reaping device as the working unit (6) and the DPF regeneration control device for the working vehicle according to any one of the first to fourth aspects.

  According to the first aspect of the present invention, an operator who operates a work vehicle such as a combiner knows that the DPF 10 is automatically regenerated at a stage earlier than the end of the work and the work efficiency decreases. When the automatic regeneration process is performed, the work plan can be changed accordingly, so that the harvesting work can be performed efficiently.

  According to the second aspect of the invention, in addition to the effect of the first aspect of the invention, the unworked area (Am) is automatically calculated from the movement trajectory of the airframe, and the work is automatically terminated by the DPF regeneration notification means. It is possible to notify the operator whether the output reduction is caused by the regeneration process of the DPF (10).

  According to the invention described in claim 3, in addition to the effect of the invention described in claim 1 or claim 2, a detailed work plan is made by knowing a margin from the start of the regeneration process until the work efficiency decreases. The harvesting operation can be performed more efficiently.

  According to the invention of claim 4, in addition to the effect of the invention of claim 1 or claim 2 or claim 3, the regeneration conditions are not good, and PM is incinerated in the automatic regeneration process of DPF (10). If this is not sufficient, the operator can grasp the manual regeneration grace time or manual regeneration grace time until the manual regeneration processing performed after stopping traveling, and can safely move to the place where manual regeneration is performed.

  According to invention of Claim 5, the harvesting operation | work of a combine can be performed efficiently.

It is a side view of a combine. It is an enlarged plan view of an exhaust pipe. It is a side view which shows the engine mounting state of a combine. It is a top view which shows the engine mounting state of a combine. It is a block diagram of automatic control. It is a notification control flowchart figure of automatic PDF reproduction | regeneration. It is a notification control flowchart figure of automatic PDF reproduction | regeneration. It is a partially expanded front sectional view of a combine. It is a front view of this machine monitor. It is a front view of a front panel. It is explanatory drawing which shows the operation | work form of a combine.

Hereinafter, embodiments of the present invention will be described with reference to examples shown in the drawings. In addition, right and left shall mean the left and right toward the front from the combine side.
FIG. 1 shows a side view of a combine, in which a cabin 3 is mounted on the right side of the front of a traveling chassis 2 equipped with a crawler traveling device 1, a Glen tank 4 is mounted on the rear of the cabin 3, and a left side of the Glen tank 4 Is equipped with a threshing device 5. A reaping device (working unit) 6 is mounted on the front side of the traveling chassis 2 so as to be movable up and down.

  The engine 7 is mounted on the traveling chassis 2 at the lower part of the cabin 3, the front exhaust pipe 8 is connected to the upper part of the DOC 9, and exhausted from the rear exhaust pipe 11 from the lower part of the DPF 10 toward the ground behind the DPF 10 through the DPF 10. Exhaust the gas. An exhaust pipe cooling device 12 is attached to the rear part of the rear exhaust pipe 11. This exhaust pipe cooling device 12 guides air from the intake port 12 a provided on the outer periphery of the rear exhaust pipe 11 to the rear exhaust pipe 11, guides air to the exhaust port 12 b side, and forms a spiral on the outer periphery of the rear exhaust pipe 11. The fin 11a cools the exhaust gas blown out from the rear exhaust pipe 11 to the ground by sending air backward while swirling around the rear exhaust pipe 11.

  The positions of the DOC 9 and the DPF 10 are located between the left threshing device 5 and the right Glen tank 4 and on the left side of the pitching hydraulic cylinder 13 in the center of the left and right and front and rear of the traveling chassis 2. You are away from the cockpit. Such a position of the DPF 10 has an effect of drying the grain to be harvested by warming the air sucked by the tomi of the threshing device 5.

  FIG. 8 shows the mounting structure of the DPF 10, where the DPF 10 is mounted on the receiving band 64 and the tightening bands 65 at the two front and rear positions are fastened to the receiving band 64 by bolts 67. The fastening band 65 is provided with a handle 66 so that the fastening band 65 and the DPF 10 can be easily removed. In addition, if the fastening band 65 is fixed to the DPF 10, the removal is further facilitated.

The pitching hydraulic cylinder 13 is a hydraulic cylinder that adjusts the horizontal height of the crawler traveling device 1.
The DPF 10 automatically performs a regeneration process in which combustion is performed by post-injection when the particulate matter (PM) such as black smoke in the exhaust gas collected by the filter exceeds a predetermined amount, but the traveling speed is below a certain speed. Then, there is a risk that high temperature exhaust gas is discharged to a certain location and the exhaust is ignited.

  The regeneration process of the DPF 10 includes an automatic PDF regeneration process in which the DPF 10 is heated to a high temperature while the work is running, and the fuel injection of the engine is adjusted by completely stopping the running in a safe place to adjust the PM fuel injection. There is a manual PDF regeneration process for incineration.

  The above automatic PDF regeneration process causes the output of the engine 7 to decrease, and the efficiency of the harvesting work is reduced and the work time is prolonged. Therefore, in order to notify the operator whether or not the regeneration process is performed during the harvesting work, The following control is performed.

FIG. 5 shows a block diagram of automatic control.
The data signal input to the machine controller 15 includes an on / off signal of the spin rotation switch 16, an on / off signal of the mowing / threshing switch 17, an opening signal of the HST opening sensor 19, and a moving speed detecting means. The vehicle traveling speed by the vehicle speed sensor 20, the on / off signal of the auger discharge switch 21, the on / off signal of the parking brake switch 25, the on / off signal of the wheat / rice switch 62, and GPS data 63 as GPS This is the current position data of the airframe detected by the signal from.

  The control signal output from the machine controller 15 includes an on / off output signal to the threshing clutch motor 30, an on / off output signal to the mowing clutch motor 31, and an on / off output signal to the auger clutch motor 32. This is an HST pump proportional valve 37.

  Data signals to be input to the engine controller 38 include the radiator water temperature of the water temperature sensor 39, the exhaust temperature of the boost temperature sensor 40, the exhaust pressure of the boost pressure sensor 41, the rotational speed of the engine output shaft of the engine rotation sensor 42, the accelerator The accelerator opening of the opening sensor 43, the fuel temperature of the fuel temperature sensor 44, the common rail pressure of the common rail pressure sensor 45, the intake amount of the air flow meter 46, and the intake / exhaust pressure difference of the DPF of the DPF differential pressure sensor 47 (front side of the DPF) Pressure difference between pressure sensor 47A and DPF rear pressure sensor 47B), DOC inlet temperature of DOC inlet temperature sensor 48, DPF inlet temperature of DPF inlet temperature sensor 49, and DPF outlet temperature of DPF outlet temperature sensor 50.

  The control signals output from the engine controller 38 are an injection signal to the injection nozzle 51, DPF clogging information to the DPF indicator 52, an ON signal to the DPF manual regeneration switch 53, and an intake throttle signal of the intake throttle 54. The DPF information 56, the water temperature 57, the load 58, the glow temperature 59, the oil pressure 60, and the engine speed 61 are sent to the monitor 55 for display.

  The PM accumulation amount estimation means estimates the PM accumulation amount from the DPF intake / exhaust pressure difference of the DPF differential pressure sensor 47 acquired by the engine controller 38, and reads the PM accumulation amount graph of the PM accumulation transition graph that is read from the PM accumulation amount at the start of travel and the travel distance. From the data, estimate the current PM deposition amount.

  The movement distance calculation means calculates the movement distance based on the pulse signal input from the vehicle speed sensor 20 and the movement distance per unit rotation amount of the drive wheel. This movement distance may be calculated from position information by GPS.

  Further, as shown in FIG. 11, the uncut area detection means (unworked area calculation means) is map data from the GPS acquired by the controller 15 of the machine, and the movement trajectory Tk of the combine C cuts around the field. Then, when the closed loop is drawn, the closed loop is recognized as a working field, and the area that has been projected to the uncut side from the position of the GPS communication device in the working width of the reaping device 6 from the region in the closed loop is reduced to obtain the uncut area (Unworked area) Am is calculated by integration. That is, even if the shape and area of the work field are not input in advance, the uncut region can be calculated if the movement trajectory Tk draws a closed loop by the cutting operation.

  Further, the uncut area calculation means calculates the uncut area Am from the area of the work field input in advance, the movement distance of the machine body calculated by the travel distance calculation means, and the work width of the work unit 6. Also good.

Furthermore, the work start of the combine is detected by turning on the mowing / threshing switch 17.
FIG. 6 shows an automatic PDF regeneration during the harvesting operation in the harvesting operation of one farm field (control of incinerating PM by increasing the temperature of the DPF 10 causes the engine output to decrease and the work efficiency to decrease). This is automatic DPF regeneration notification control that informs the operator whether or not. This automatic DPF regeneration notification control can be used to establish a work prospect.

  The PM accumulation amount estimation means estimates the PM accumulation state of the DPF 10, and the uncut area Am detection means calculates the area of the uncut area when a closed region is formed by the moving locus of the combine such as turning. Then, the PM accumulation amount of the DPF 10 at the stage where the closed region is formed is estimated, the movement distance is calculated by the movement distance calculation means during the outer periphery movement, and the uncut area Am calculated by the work area calculation means Based on the movement distance calculated by the movement distance calculation means and the work width of the reaping device 6, the required work time (required movement time) or the required work distance (required movement distance) required to complete the harvesting of the work field is calculated. The regeneration grace time or regeneration grace distance until the particulate matter deposition amount reaches a preset deposition amount is calculated from the uncut area Am, the moving distance, and the amount of change in the PM deposition amount during the outer periphery movement. If the regeneration grace time is greater than the required work time, or if the regeneration grace distance is greater than the required work distance, the DPF information 56 of the main unit monitor 55 as the DPF regeneration notification means is used. To indicate that the automatic PDF playback begins to notify the worker in the work after many minutes. The uncut area Am may be manually input by the operator.

  FIG. 7 is a control in the case where automatic DPF regeneration cannot be performed during work, and it is determined whether or not automatic DPF regeneration is performed by the PM accumulation amount estimating means. (If the temperature is not too low and the temperature of the DPF 10 can be increased), automatic DPF regeneration is executed if the conditions are met, and the regeneration status is displayed on the DPF information 56 of the monitor 55 during regeneration. When the reproduction ends, the end of automatic reproduction is displayed in the DPF information 56.

  Also, if automatic DPF regeneration is not possible because the outside air temperature is too low, the reason why automatic regeneration is not possible (such as low outside air temperature) and a countermeasure for the cause (such as moving to a safe place) are displayed in the DPF information 56. In addition, if the current state is maintained, the manual regeneration grace time until the travel must be stopped and the manual DPF regeneration process must be performed is displayed in the DPF information 56 and notified.

  When automatic DPF regeneration starts during work, the engine 7 is set to a lower torque, the vehicle speed is decreased by the shift lever, the increase in vehicle speed is moderated, and the automatic decrease in vehicle speed is increased. Stable automatic DPF regeneration is performed by preventing the decrease of the above.

  Further, when the wheat / rice changeover switch 62 as the harvest selection means is switched to wheat, the repetition of the automatic DPF regeneration due to a light load is reduced by switching the boost temperature sensor 40 where the automatic DPF regeneration starts to a higher temperature.

  FIG. 9 shows the main unit monitor 55, which displays the DPF information 56 on the display unit 55a. While the DPF is being reproduced, the display of “DPF automatic regeneration” is repeatedly displayed, and the front panel 68 is further displayed. The DPF lamp 69 to be provided is turned on, and the alarm lamp 70 is blinked to warn that the DPF 10 is at a high temperature. The display on the display unit 55a may alternately display “muffler exhaust temperature becomes high” or “please be careful when stopping”. Further, if the progress of the reproduction process is displayed by sequentially turning on the lamps displayed in the bar, the progress can be easily understood.

  The DPF manual regeneration switch 53 is provided on the side of the front panel in the electrical component box near the operator's knee or behind the seat, and displays a warning on the display unit 55a even during passive regeneration.

6 Working part (reaping device)
7 Engine 10 DPF
56 Harvest selection means (wheat / rice switch)
Am Uncut area

Claims (5)

A DPF (10) that collects particulate matter contained in exhaust gas from the engine (7), and a temperature increase that performs automatic regeneration processing to remove the particulate matter by raising the temperature in the DPF (10) Means, PM deposition amount estimation means for estimating the amount of particulate matter deposited in the DPF (10), movement distance calculation means for calculating the movement distance of the aircraft, and the area and movement distance of the preset work target area An unworked area calculating means for automatically calculating an unworked area left in the work target area from the movement distance of the machine body calculated by the calculating means and the work width of the work unit (6),
In a state where the vehicle is traveling while driving the work unit (6), it is necessary to complete the work from the unworked area (Am) calculated by the unworked area calculation means and the work width of the work unit (6). Calculate the travel distance or the time required to complete the work from the unworked area (Am) calculated by the unworked area calculation means, the travel speed of the machine, and the work width of the work part (6). And
The regeneration grace time or regeneration from the moving average of the particulate matter deposition amount estimated by the PM deposition amount estimation means until the particulate matter deposition amount in the DPF (10) reaches a preset deposition amount. A grace distance is calculated, and when the regeneration grace time is greater than the required time or when the regeneration grace distance is greater than the required movement distance, the automatic regeneration processing of the DPF (10) is performed during the work. A DPF regeneration control device for a working vehicle provided with a DPF regeneration informing means for informing this.   When the closed area is formed by the movement path in a state where the working section (6) is driven, the unworked area calculation means calculates the closed area from the work width of the working section (6) and the movement path of the work vehicle. The DPF regeneration control device for a working vehicle according to claim 1, wherein the unworked area (Am) is calculated.   The DPF regeneration control apparatus for a working vehicle according to claim 1 or 2, wherein the regeneration grace time or the regeneration grace distance is notified by the DPF regeneration notification means.   Manual regeneration deposition larger than the set deposition amount when the particulate matter deposition amount detected by the PM deposition amount estimation unit increases in a state where the automatic regeneration process of the DPF (10) is executed by the temperature raising unit. The DPF regeneration control device for a working vehicle according to claim 1, 2 or 3, wherein the manual regeneration allowance time or the manual regeneration allowance distance until reaching the amount is notified by the DPF regeneration notifying means.   The combine provided with the reaping device as the said working part (6), and the DPF regeneration control apparatus of the working vehicle as described in any one of Claims 1-4.

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