JP6936063B2 - Working vehicle - Google Patents

Description

The present invention relates to a working vehicle such as a combine equipped with a sequencer.

In a work vehicle such as a combine, a sequencer is provided in the fuel supply path between the fuel tank and the engine, and the sequencer separates and stores the water contained in the fuel (see, for example, Patent Document 1). .. Further, there is also known a working vehicle which is provided with a water content detecting means for detecting the amount of water accumulated in the sequencer and notifies the sequencer to drain water based on the detected water content of the segmenter. ..

Japanese Unexamined Patent Publication No. 2016-214098

By the way, the water contained in the fuel is mainly the water accumulated in the fuel tank due to dew condensation, etc., and if the amount of water accumulated in the fuel tank is large, the drainage notification of the segmenter frequently occurs, which hinders the work. There is a risk of In order to solve such a problem, it is conceivable to detect the amount of water accumulated in the fuel tank and, based on the detected amount of water, give a notification prompting the maintenance of the fuel tank. Since the detecting means for detecting the amount of water accumulated is more expensive than the detecting means for detecting the amount of water accumulated in the sedimentor, there is a possibility that the cost will be significantly increased.

The present invention has been created for the purpose of solving these problems in view of the above circumstances, and the invention of claim 1 intervenes in the fuel supply path between the fuel tank and the engine. A working vehicle including a segmenter that separates and stores water contained in fuel and a water content detecting means for detecting the amount of water accumulated in the segmenter, and the amount of water detected by the water content detecting means is used. Based on this, it is determined whether or not the draining work has been carried out based on the water draining work necessity determining means for determining the necessity of the draining work of the segmenter and the detected water amount of the water content detecting means. The configuration is provided with a drainage work execution determination means, a fuel tank maintenance notification means for urging the maintenance of the fuel tank based on the judgment from the drainage work execution determination means, and the drainage work execution determination means. In this case, the fuel tank maintenance notification means determines that the draining work has been performed by the draining work execution determining means, and then determines that the next draining work is necessary by the draining work necessity determining means. The work running is characterized in that the frequency of occurrence of the drainage work is specified based on the time until the fuel tank is removed, and when the specified frequency of occurrence is higher than the predetermined frequency, a notification prompting the maintenance of the fuel tank is given. It's a car.
The invention of claim 2 is a sequencer that is interposed in a fuel supply path between a fuel tank and an engine to separate and store water contained in fuel, and a water content detecting means for detecting the amount of water accumulated in the segmenter. A work vehicle comprising the above, the water draining work necessity determining means for determining the necessity of the draining work of the segmenter based on the detected water content of the water content detecting means, and the water content detecting means. Based on the judgment from the drainage work execution determination means for determining whether or not the drainage work has been performed, the drainage work necessity determination means, and the drainage work execution determination means based on the detected water content of the means. In the configuration provided with the fuel tank maintenance notification means for notifying the maintenance of the fuel tank, the fuel tank maintenance notification means is one of the draining work necessity determining means and the draining work implementation determining means. The frequency of occurrence of the drainage work is specified based on the number of occurrences of the drainage work per unit time determined by at least one of them, and when the specified frequency of occurrence is higher than the predetermined frequency, the maintenance of the fuel tank is performed. It is a working vehicle characterized by performing a prompting notification.
A third aspect of the present invention is provided with a drainage work notification means for notifying the drainage work when it is determined by the drainage work necessity determination means that the drainage work is necessary. The work vehicle according to 1 or 2.

According to the invention of claim 1, the frequency of occurrence of the drainage work of the segmenter is specified, and when the specified frequency of occurrence is higher than the predetermined frequency, a notification prompting the maintenance of the fuel tank is given, so that the fuel tank is accumulated. It is possible to promote the maintenance of the fuel tank at an appropriate timing without providing a detecting means for detecting the amount of water. In this case, the frequency of occurrence of the drainage work can be specified based on the time from when it is determined that the drainage work has been performed to when it is determined that the next drainage work is necessary.
Further, according to the invention of claim 2, the frequency of occurrence of the drainage work of the segmenter is specified, and when the specified frequency of occurrence is higher than the predetermined frequency, a notification prompting the maintenance of the fuel tank is given, so that the fuel tank is notified. It is possible to promote the maintenance of the fuel tank at an appropriate timing without providing a detecting means for detecting the accumulated water content. In this case, the frequency of occurrence of the drainage operation can be specified based on the number of occurrences of the drainage operation per unit time.
Further , according to the invention of claim 3 , when it is determined that the draining work of the segmenter is necessary, a notification prompting the draining work of the segmenter is performed, so that it is possible to prevent the engine from being damaged by neglecting the draining work of the segmenter. can.

It is a left side view of the combine which concerns on embodiment of this invention. It is a top view of the combine which concerns on embodiment of this invention. It is a figure which shows the fuel supply path of the combine which concerns on embodiment of this invention. It is a top view which shows the control part of the combine which concerns on embodiment of this invention. It is a figure which shows the display screen of the liquid crystal display part of the combine which concerns on embodiment of this invention, (a) is the figure which shows the state which the abnormality notification (the sequencer water sensor operation (caution)) is displayed on the normal display screen, (a. b) is a diagram showing a state in which the abnormality notification (segmenter water sensor operation) is reduced and displayed on the normal display screen, and (c) is a state in which the abnormality notification (segmenter water sensor operation (warning)) is displayed on the normal display screen. It is a figure which shows. It is a block diagram which shows the input / output of the control device of the combine which concerns on embodiment of this invention. It is a flowchart which shows the notification control (main routine) of the combine control device which concerns on embodiment of this invention. It is a flowchart which shows the segmenter drainage notification control of the combine control device which concerns on embodiment of this invention. It is a flowchart which shows the process at the time of engine start executed in the segmenter drainage notification control. It is a flowchart which shows fuel tank maintenance notification control (fuel tank maintenance notification control) of the combine control device which concerns on embodiment of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In FIGS. 1 to 3, 1 is a combine (working vehicle), and the combine 1 includes a harvesting unit 2 for cutting the culm, a threshing unit 3 for threshing and sorting grains from the culm. An operator rides on a grain tank 4 for storing the selected grains, an auger 5 for carrying out the grains in the grain tank 4 to the outside of the machine, a post-processing unit 6 for post-treating the threshed culm, and the operator. It is configured to include a control unit 7 and a crawler type traveling unit 8.

An engine 9 is mounted below the control unit 7. As shown in FIG. 3, the engine 9 burns with the fuel supplied from the fuel tank 10, and the engine power output in accordance with the combustion operation is transmitted to each part of the combine 1. In the fuel supply path 11 from the fuel tank 10 to the engine 9, a fuel pump 12 that sucks the fuel in the fuel tank 10 and sends it to the engine 9 and a segmenter that separates the water contained in the fuel on the upstream side of the fuel pump 12 13 and a fuel filter 14 for filtering fuel on the downstream side of the fuel pump 12 are provided.

The sequencer 13 includes a water storage unit 13a that stores water separated from the fuel, and a water detection sensor 13b (see FIG. 6: water content detection means) that detects the amount of water accumulated in the water storage unit 13a. The water detection sensor 13b of the present embodiment maintains the OFF state when the amount of water accumulated in the water storage unit 13a is at a level that does not require the water draining operation, and the amount of water accumulated in the water storage unit 13a is the water draining operation. Although it is an ON / OFF switch that switches to the ON state when the level exceeds the required level, it may be a switch that detects the amount of water accumulated in the water storage unit 13a in multiple stages or in a stepless manner. The water contained in the fuel is mainly the water accumulated in the fuel tank 10 due to dew condensation or the like.

As shown in FIG. 4, the control unit 7 is provided with a driver's seat 15 on which the operator sits, and a multi-steering lever 16, a main shift lever 17, an auxiliary shift lever 18, a liquid crystal display unit 19, and the like are located in the vicinity thereof. Have been placed.

The multi-steering lever 16 is a joystick-type operation lever arranged on the front right side of the driver's seat 15. Based on this, it is also used as a steering control tool that changes the direction of the aircraft.

The main shift lever 17 and the auxiliary shift lever 18 are arranged on the left side of the driver's seat 15. One main shift lever 17 also serves as a continuously variable transmission operator for continuously changing the traveling speed and a forward / backward changeover operator for switching forward / backward advancement, and the other auxiliary shift lever 18 is based on the main shift lever 17. It is a stepped speed change operation tool that switches the speed change range step by step.

The liquid crystal display unit 19 is a touch panel type liquid crystal display in which a touch panel 19b is laminated on the liquid crystal panel 19a, and is arranged in the front left, right, and center portions of the driver's seat 15. The liquid crystal display unit 19 is connected to a control device 20 (see FIG. 6: display control unit) described later, and the display is controlled by the control device 20.

As shown in FIG. 5, the control device 20 causes the liquid crystal display unit 19 to display a plurality of touch operation buttons 21a to 21e, and displays the display screen of the liquid crystal display unit 19 in response to the touch operation of each of the touch operation buttons 21a to 21e. To switch. The switchable display screen simply displays the setting screen (not shown) that allows various setting operations, the camera image display screen (not shown) that displays the camera image, and the information necessary for the work. A simple display screen (not shown) and a normal display screen A (see (b) in FIG. 5) for displaying information necessary for work in detail are included.

As shown in FIG. 5B, the normal display screen A includes a touch operation button display area a for displaying the touch operation buttons 21a to 21e, and a basic information group having a high importance among the information related to the aircraft. The basic information display area b to be displayed, the auxiliary information display area c for displaying the auxiliary information group having a lower importance than the basic information group b among the information related to the aircraft, and the alarm display area d for displaying various alarms. , The touch operation button display area a is secured at the left end of the normal display screen A, and the basic information display area b is located at the left half of the normal display screen A excluding the touch operation button display area a. The attached information display area c is secured in the right half of the normal display screen A excluding the touch operation button display area a, and the alarm display area d is secured in the lower end of the normal display screen A. By the way, the basic information group of this embodiment includes direction indicator information, work light information, engine rotation information, vehicle speed information, fuel information, engine load factor information, tank paddy amount information, etc., and the attached information group includes , Aircraft tilt information, chaff sheave opening information, Karamin air volume information, etc. are included.

As shown in FIG. 5A, the control device 20 causes the liquid crystal display unit 19 to display the abnormality notification H1 when an abnormality occurs in the airframe. The abnormality notification H1 shown in FIG. 5A is a notification for encouraging the draining work of the sequencer 13 (hereinafter, also appropriately referred to as a sequencer notification), and is displayed in response to the ON of the water detection sensor 13b described above. NS. The abnormality notification H1 is displayed by a pop-up window that overlaps with the basic information display area b and the attached information display area c. There is water in the window. Please drain the drain from the sedimentor. ”And“ Caution ”indicating the notification level are included. The abnormality notification of the present invention is not limited to the abnormality notification H1 (including H2 and Hs) that promotes the drainage work of the sequencer 13, and includes those that notify various abnormalities.

As shown in FIGS. 5A and 5B, the abnormality notification H1 can switch between the enlarged display and the reduced display according to the human operation. That is, at the beginning of the display of the abnormality notification H1, the enlarged display shown in FIG. 5A calls attention to the abnormality, but if the abnormality can continue the work even if it occurs, the abnormality notification H1 is reduced. By switching to the display, the display of the basic information display area b and the attached information display area c required for the work can be prioritized. In the present embodiment, when the abnormality notification H1 shown in FIG. 5A is touched (tapped), as shown in FIG. 5B, the reduced abnormality notification Hs is displayed in the alarm display area d at the bottom of the screen. Is displayed. In the abnormal notification Hs in the reduced state, the coping method for the abnormality is not displayed, and only the content of the abnormality is displayed. Further, when the abnormality notification Hs in the reduced state is touch-operated, the abnormality notification H1 is switched to the enlarged abnormality notification H1 shown in FIG. 5 (a).

According to such an abnormality notification reduced display function, it is possible to give priority to the display of the basic information display area b and the attached information display area c necessary for the work and continue the work, but an abnormality has occurred. There is a risk of forgetting that and neglecting to respond to abnormalities. Therefore, the control device 20 according to the embodiment of the present invention automatically enlarges and displays the abnormality notification Hs in the reduced display state based on a predetermined condition. As a result, it is possible to promote a reliable and prompt response to the abnormality. In the present embodiment, the abnormality notification H1 is switched to the reduced display state according to a predetermined human operation and automatically returned to the enlarged display state based on the predetermined condition, but the abnormality notification H1 is changed to the predetermined artificial operation. It may be switched to the non-display state and automatically redisplayed based on a predetermined condition.

Further, the control device 20 of the present embodiment changes the display content of the abnormality notification H2 when the abnormality notification Hs in the reduced display state is automatically enlarged and displayed according to a predetermined condition. For example, as shown in (c) of FIG. 5, the character string indicating the importance and urgency of the abnormality response is changed from "Caution" to "Warning", and the character string indicating the countermeasure is "If used as it is, the engine Change to a tone that strongly encourages the draining work of the sequencer 13, such as "Please drain the water from the sequencer." As a result, it is possible to prevent the response to the abnormality from being postponed or forgotten.

The predetermined condition for automatically enlarging the abnormal notification Hs in the reduced display state can be the operation of the aircraft or the operation of the aircraft. For example, the abnormality notification Hs in the reduced display state is automatically enlarged and displayed on condition that the engine 9 is restarted. In this way, the abnormality notification H2 in the enlarged state can be displayed at the timing of the start of the work while avoiding the threshing and cutting work. Further, the abnormality notification Hs in the reduced display state is automatically enlarged and displayed on condition that the cutting clutch or the working machine (threshing) clutch is switched from the off state to the on state. In this way, it is possible to display the abnormal notification H2 in the enlarged state at the timing of the start of cutting while avoiding the threshing and cutting work. Further, the abnormality notification Hs in the reduced display state may be automatically enlarged and displayed on condition that the cutting clutch or the working machine (threshing) clutch is switched from the engaged state to the disconnected state. In this way, it is possible to display the abnormal notification H2 in the enlarged state at the timing of the end of cutting while avoiding the threshing and cutting work.

Further, the abnormality notification Hs in the reduced display state may be automatically enlarged and displayed on condition that the cutting unit 2 has risen to a predetermined height or more (a height not used in the grain cutting operation). In this way, it is possible to display the abnormal notification H2 in the enlarged state at the timing of the end of cutting while avoiding the threshing and cutting work. Further, the abnormality notification Hs in the reduced display state may be automatically enlarged and displayed on condition that the cutting unit 2 is lowered to a predetermined height or less. In this way, it is possible to display the abnormal notification H2 in the enlarged state at the timing of the start of cutting while avoiding the threshing and cutting work.

Further, the abnormality notification Hs in the reduced display state may be automatically enlarged and displayed on condition that the multi-steering lever 16 is tilted to the left or right (turning operation) by a predetermined angle or more. In this way, it is possible to display the abnormal notification H2 in the expanded state at the timing of the start of turning while avoiding the threshing and cutting work.

Further, the abnormality notification Hs in the reduced display state may be automatically enlarged and displayed on condition that the discharge clutch of the auger 5 is switched from the disengaged state to the engaged state or from the engaged state to the disengaged state. In this way, it is possible to display the abnormality notification H2 in the enlarged state during the grain discharging work while avoiding the threshing and cutting work. Further, during the grain discharge work, since the tank paddy amount information on the normal display screen A is confirmed, there is an advantage that the abnormality notification H2 can be easily noticed.

Further, the abnormality notification Hs in the reduced display state may be automatically enlarged and displayed on condition that the auger 5 is moved (elevated or turned). In this way, it is possible to display the abnormality notification H2 in the enlarged state during the grain discharging work while avoiding the threshing and cutting work.

Further, the abnormality notification Hs in the reduced display state may be automatically enlarged and displayed on condition that the auxiliary shift lever 18 is operated. In this way, the abnormality notification H2 in the enlarged state can be displayed at the timing of the end of the work of switching from the work run to the road run or the start of the work of switching from the road run to the work run while avoiding the threshing and mowing work.

Further, the predetermined condition for automatically enlarging the abnormal notification Hs in the reduced display state may be detection or non-detection of the harvested product. For example, the culm detection sensor 38 (see FIG. 6) provided in the culm transport path from the cutting section 2 to the threshing section 3 or the sorted product detection sensor 39 (see FIG. 6) provided inside the threshing section 3 is turned off. The abnormality notification Hs in the reduced display state may be automatically enlarged and displayed on condition that the display is changed from ON to ON or from ON to OFF. In this way, it is possible to display the abnormal notification H2 in the enlarged state at the timing of the start of the work or the end of the work while avoiding the threshing and cutting work.

Further, the predetermined condition for automatically enlarging the abnormality notification Hs in the reduced display state may be the position of the aircraft. For example, the position (latitude and longitude) of the aircraft is specified based on GPS signals received from three or more GPS satellites, and the reduced display state is abnormal on the condition that the specified position is the entry position or exit position of the field. The notification Hs may be automatically enlarged and displayed. In this way, the abnormality notification H2 in the enlarged state can be displayed at the timing of the start of the work or the end of the work while avoiding the threshing and cutting work.

Further, even when the control device 20 of the present embodiment detects an abnormality of the airframe and displays the first abnormality notification H1 on the liquid crystal display unit 19, the abnormality notification H1 is not unconditionally displayed. The first abnormality notification H1 is displayed on condition that the vehicle speed is equal to or lower than the predetermined speed. By doing so, it is possible to prevent a problem caused by displaying the abnormality notification H1 during traveling.

By the way, as described above, the water contained in the fuel is mainly the water accumulated in the fuel tank 10 due to dew condensation or the like, and when the amount of water accumulated in the fuel tank 10 is large, it is an abnormality that is a drainage notification of the segmenter 13. Notification H1 is frequently displayed, which may interfere with work. In order to solve such a problem, it is conceivable to detect the amount of water accumulated in the fuel tank 10 and, based on the detected amount of water, give a notification prompting the maintenance of the fuel tank 10. The detecting means for detecting the amount of water accumulated in 10 is more expensive than the detecting means for detecting the amount of water accumulated in the sequencer 13, and there is a possibility that the cost will be significantly increased.

Therefore, the control device 20 according to the embodiment of the present invention determines whether or not the draining work of the sequencer 13 is necessary (hereinafter, also appropriately referred to as puddle detection) based on the detected water content of the water detection sensor 13b. , It is determined whether or not the drainage work of the sequencer 13 has been carried out (hereinafter, also appropriately referred to as drainage detection), and the frequency of occurrence of the drainage work is specified based on these determinations. Then, when the specified frequency of occurrence is higher than the predetermined frequency, the control device 20 determines that a large amount of water is accumulated in the fuel tank 10 and prompts the maintenance (drainage work) of the fuel tank 10 (hereinafter referred to as “drainage work”). (Also referred to as fuel tank notification or fuel tank notification) as appropriate.

The frequency of occurrence of the drainage work can be specified, for example, based on the measurement time from the determination that the drainage work of the sequencer 13 has been performed to the next determination that the drainage work is necessary, and the measurement time can be specified. When it is shorter than the predetermined time, it can be determined that the frequency of draining work is high. Further, the frequency of occurrence of the drainage work may be specified based on the number of occurrences per unit time of the drainage work. In this case, the number of occurrences of the drainage work per unit time is greater than the predetermined number of times. When there are many, it can be determined that the frequency of drainage work is high. Although not shown, the abnormality notification for urging the maintenance of the fuel tank 10 is equivalent to the abnormality notification H1 for urging the drainage of the sequencer 13. For example, "fuel tank abnormality" is displayed as the abnormality content. As a remedy, "Water has accumulated in the fuel tank. Please drain the water from the drain of the fuel tank." Is displayed.

Next, the input / output configuration and the control procedure of the control device 20 that realizes the display operation of the liquid crystal display unit 19 as described above will be described with reference to FIGS. 6 and later.

As shown in FIG. 6, the control device 20 includes a control processor such as a CPU and a storage unit such as a RAM and a ROM, and the water detection sensor 13b and the multi-steering lever 16 described above are on the input side thereof. (Lever angle sensor), main speed change lever 17 (lever angle sensor), touch panel 19b, grain detection sensor 38, sorted product detection sensor 39, engine rotation sensor 31 that detects the rotation of the engine 9, and work equipment clutch. The work machine clutch detection sensor 32 that detects the on / off of the cutting clutch, the cutting clutch detection sensor 33 that detects the on / off of the cutting clutch, the cutting unit height detection sensor 34 that detects the height of the cutting unit 2, and the discharge. The discharge clutch sensor 35 that detects the engagement / disengagement of the clutch, the auger remote control 36 that performs the up / down operation and the turning operation of the auger 5, the traveling auxiliary shift detection sensor 37 that detects the operation of the auxiliary shift lever 18, and the GPS signal are received. While the GPS 40 (reception module) and the traveling rotation sensor 41 for detecting the vehicle speed are connected, a sound is emitted on the output side of the control device 20 in accordance with the abnormality notification in addition to the liquid crystal panel 19a described above. Buzzer 42 is connected.

Then, the control device 20 of the present embodiment has an abnormality determination means, an abnormality notification display means (draining work notification means), and an abnormality notification display switching as a functional configuration realized by cooperation between hardware and software. Means, abnormality notification redisplay means, display content changing means, drainage work necessity judgment means, drainage work execution judgment means, and fuel tank maintenance notification means are provided. Hereinafter, notification control is the main routine of the control device 20. And the abnormality judgment means, the abnormality notification display means (draining work notification means), the abnormality notification display switching means, the abnormality notification redisplay means, the display content changing means, the draining work necessity judgment means, and the draining work implementation judgment means. A specific control procedure of the segmenter drainage notification control to be realized and the fuel tank maintenance notification control (hereinafter, also appropriately referred to as fuel tank maintenance notification control) to realize the fuel tank maintenance notification means will be described.

As shown in FIG. 7, in the notification control, the subroutines of the sequencer drainage notification control (S1) and the fuel tank maintenance notification control (S2) are repeatedly executed.

As shown in FIG. 8, in the sequencer drainage notification control, after the engine start processing (S21) described later is executed, the water detection sensor 13b at the time of this execution is turned ON / OFF and the water detection sensor 13b at the time of the previous execution is executed. Is determined to be ON / OFF (S22, S23, S24).

Here, when it is determined that both the water detection sensor 13b is OFF during the current execution and the previous execution, "0" is stored in the sequencer notification flag (S25), and the sequencer notification on the liquid crystal display unit 19 is displayed. Assuming that there is no display (S26), the process returns to the upper routine. If it is determined that the water detection sensor 13b is OFF at the time of this execution and the water detection sensor 13b is ON at the time of the previous execution, after storing the drainage detection in the history (S27), steps S25 and S26 To return to the higher-level routine.

Further, when it is determined that both the water detection sensor 13b is ON at the time of this execution and the previous execution, the stored value of the sequencer notification flag is determined (S28), and the water detection sensor 13b is determined at the time of this execution. When it is ON and it is determined that the water detection sensor 13b is OFF at the time of the previous execution, the stored value of the sequencer notification flag is determined after storing the water pool detection in the history (S29).

If it is determined in step S28 that the stored value of the sequencer notification flag is "0", it is determined whether or not the aircraft is in the stopped running state (predetermined speed or less) (S30), and the determination result is YES. In this case, after storing "1" in the sequencer notification flag (S31) and displaying the sequencer notification (caution: H1) on the liquid crystal display unit 19 (S32), the process returns to the upper routine, but the determination in step S30. If the result is NO, steps S25 and S26 are executed to return to the higher-level routine.

On the other hand, if it is determined in step S28 that the stored value of the sequencer notification flag is other than "0", the stored value of the sequencer notification flag is determined again (S33), and the determination result is "1" or "3". If, the touch operation of the liquid crystal display unit 19 is determined (S34). Here, when it is determined that there is no touch operation, the stored value of the sequencer notification flag is maintained as it is (S35), and the sequencer notification (caution or warning: H1 or H2) displayed on the liquid crystal display unit 19 is also displayed. Maintain the current state (S36) and return to the upper routine. On the other hand, when it is determined in step S33 that there is a touch operation, "2" is stored in the sequencer notification flag (S37), and the sequencer notification displayed on the liquid crystal display unit 19 (caution or warning: H1 or H2). Is switched to the segmenter notification (reduction: Hs) in the reduced state (S38), and then returns to the upper routine.

Further, in step S33, even when it is determined that the stored value of the sequencer notification flag is "2", the touch operation of the liquid crystal display unit 19 is determined (S39). Here, when it is determined that there is a touch operation, the stored value of the sequencer notification flag is returned to the stored value before reduction (S40), and the reduced state sequencer notification (reduction: Hs) displayed on the liquid crystal display unit 19 is performed. Is switched to the expanded state segmenter notification (caution or warning: H1 or H2) (S41), and returns to the upper routine.

On the other hand, in step S39, when it is determined that there is no touch operation, it is determined whether or not there is a predetermined condition that satisfies the condition among the plurality of predetermined conditions described above (S42). The stored value of the above is maintained as it is (S43), and the segmenter notification (reduction: Hs) in the reduced state displayed on the liquid crystal display unit 19 is also maintained as it is (S44), and the process returns to the upper routine. On the other hand, if it is determined in step S42 that there is, "3" is stored in the sequencer notification flag (S45), and the reduced sequencer notification (reduced: Hs) displayed on the liquid crystal display unit 19 is expanded. After switching to the sequencer notification (warning: H2) of (S46), the process returns to the upper routine.

As shown in FIG. 9, in the engine start processing, the engine drive state at the time of the current execution and the engine drive state at the time of the previous execution are determined (S10, S11). Here, if it is determined that the engine 9 is in the driving state at the time of this execution and the engine 9 is in the non-driving state at the time of the previous execution, the stored value of the sequencer notification flag is determined (S12), but other than that. In that case, it returns to the upper routine as it is. Then, in step S12, if it is determined that the stored value of the segmenter notification flag is other than "1", the process returns to the upper routine as it is, but if it is determined that the stored value of the segmenter notification flag is "1", the process returns to the upper routine as it is. , After storing "3" in the sequencer notification flag (S13), the process returns to the upper routine.

As shown in FIG. 10, in the fuel tank maintenance notification control, first, ON / OFF of the water detection sensor 13b at the time of this execution is determined (S50). Here, if it is determined that the water detection sensor 13b is OFF at the time of this execution, "0" is stored in the fuel tongue notification flag (S51), and the liquid crystal display unit 19 does not display the fuel tongue notification (S52). , Return to the upper routine.

On the other hand, when it is determined that the water detection sensor 13b is ON at the time of this execution, the stored value of the fuel tongue notification flag is determined (S53), and when it is determined that the stored value is "0", the stored value is determined. , The ON / OFF of the water detection sensor 13b at the time of the previous execution is determined (S54), and if the determination result is ON, the process returns to the upper routine as it is, but if it is determined to be OFF, the water for the sequencer 13 is determined. It is determined whether or not the mixing of water is frequent, that is, whether or not the frequency of detecting a puddle is high (S55). In the present embodiment, the history of puddle detection and puddle detection stored in the sequencer drainage notification control is referred to, and water is mixed when the time from the previous drainage detection to the current puddle detection is shorter than a predetermined time. Is determined to be frequent. If the determination result in step S55 is YES, "1" is stored in the fuel tongue notification flag (S56), and after displaying the fuel tongue notification on the liquid crystal display unit 19 (S57), the process returns to the upper routine. However, if the determination result in step S55 is NO, steps S51 and S52 are executed to return to the higher-level routine.

On the other hand, if it is determined in step S53 that the stored value is other than "0", the touch operation of the liquid crystal display unit 19 is determined (S58). Here, when it is determined that there is no touch operation, the stored value of the fuel tongue notification flag is maintained as it is (S59), and the fuel tongue notification displayed on the liquid crystal display unit 19 is also maintained as it is (S59). S60), return to the upper routine. On the other hand, in step S58, when it is determined that there is a touch operation, "0" is stored in the fuel tongue notification flag (S61), and the fuel tongue notification displayed on the liquid crystal display unit 19 is switched to the non-display state. Later (62), it returns to the upper routine.

According to the present embodiment configured as described above, the segmenter 13 is interposed in the fuel supply path 11 between the fuel tank 10 and the engine 9, and the water contained in the fuel is separated and stored, and is accumulated in the segmenter 13. The combine 1 is provided with a water detection sensor 13b for detecting the amount of water, and based on the amount of water detected by the water detection sensor 13b, the necessity of the draining work of the generator 13 is determined, and the draining work is performed. It is determined whether or not it has been carried out, and when the frequency of drainage work specified based on these judgments is higher than the predetermined frequency, a notification prompting the maintenance of the fuel tank 10 is given, so that the fuel tank 10 has accumulated. Even if the detection means for detecting the amount of water is not provided, the maintenance of the fuel tank 10 can be promoted at an appropriate timing.

1 Combine 2 Cutting part 3 Threshing part 4 Grain tank 5 Auger 7 Control part 9 Engine 10 Fuel tank 11 Fuel supply path 13 Sedimentor 13a Water storage part 13b Water detection sensor 16 Multi-steering lever 17 Main speed change lever 18 Secondary speed change lever 19 LCD Display 19a Liquid crystal panel 19b Touch panel 20 Control device

Claims (3)

A sedimentor that separates and stores the water contained in the fuel through the fuel supply path between the fuel tank and the engine.
A work vehicle provided with a water content detecting means for detecting the water content accumulated in the segmenter.
Based on the detected water content of the water content detecting means, the water draining work necessity determining means for determining the necessity of the draining work of the segmenter, and the water draining work necessity determining means.
Based on the detected water content of the water content detecting means, the water draining work execution determining means for determining whether or not the draining work has been performed, and the water draining work execution determining means.
The configuration is provided with the drainage work necessity determination means and the fuel tank maintenance notification means for notifying the fuel tank maintenance based on the judgment from the drainage work implementation determination means.
After the fuel tank maintenance notification means determines that the draining work has been performed by the draining work execution determining means, the fuel tank maintenance notification means determines that the next draining work is necessary by the draining work necessity determining means. A working vehicle, characterized in that the frequency of occurrence of the drainage work is specified based on the time until, and when the specified frequency of occurrence is higher than a predetermined frequency, a notification prompting maintenance of the fuel tank is given. A sedimentor that separates and stores the water contained in the fuel through the fuel supply path between the fuel tank and the engine.
A work vehicle provided with a water content detecting means for detecting the water content accumulated in the segmenter.
Based on the detected water content of the water content detecting means, the water draining work necessity determining means for determining the necessity of the draining work of the segmenter, and the water draining work necessity determining means.
Based on the detected water content of the water content detecting means, the water draining work execution determining means for determining whether or not the draining work has been performed, and the water draining work execution determining means.
The configuration is provided with the drainage work necessity determination means and the fuel tank maintenance notification means for notifying the fuel tank maintenance based on the judgment from the drainage work implementation determination means.
The fuel tank maintenance notification means is based on the number of occurrences per unit time of the drainage work determined by at least one of the drainage work necessity determination means and the drainage work execution determination means. A working vehicle, characterized in that the frequency of occurrence of fuel is specified, and when the specified frequency of occurrence is higher than a predetermined frequency, a notification prompting maintenance of the fuel tank is given. The work according to claim 1 or 2 , further comprising a drainage work notification means for notifying the drainage work when it is determined by the drainage work necessity determination means. Traveling vehicle.

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