JP2019209953A - Work vehicle - Google Patents

Abstract

To improve cooling performance of an engine control unit.SOLUTION: A work vehicle according to an embodiment includes: an engine E; an engine room 10; a radiator 21; and an engine control unit 100. The engine room 10 houses the engine E. The radiator 21 is erected in the engine room 10 so as to partition an interior of the engine room 10 in an anteroposterior direction and include the engine E in one of the partitioned spaces. The engine control unit 100 controls the engine E. The engine control unit 100 is disposed at one side of left and right sides in the engine room 10 and is disposed at a space opposite to the engine E across the radiator 21 in the engine room 10.SELECTED DRAWING: Figure 7

Description

  The present invention relates to a work vehicle.

  Conventionally, in a work vehicle such as a tractor, a partition plate that divides the engine room in which the engine is housed in the front and back is provided on an outer peripheral portion of a radiator erected in the engine room, and in front of the partition plate, A configuration in which an engine control unit is provided above is known (see, for example, Patent Document 1).

JP 2012-201159 A

  However, in the conventional configuration as described above, since the engine control unit is located above the radiator where the cooling air does not flow or is small even if it flows, the cooling performance of the engine control unit is lowered. Moreover, when the engine control unit is provided with a cover to prevent water from entering from above, the cooling performance of the engine control unit is further deteriorated.

  The present invention has been made in view of the above, and an object of the present invention is to provide a work vehicle that can improve the cooling performance of the engine control unit.

  In order to solve the above-described problems and achieve the object, the work vehicle (1) according to claim 1 includes an engine (E), an engine room (10) that houses the engine (E), and the engine. A radiator (21) that includes the engine (E) in one of the rooms (10) and that stands up and down in the engine room (10), and right and left in the engine room (10) An engine control that is disposed on either side and is disposed in a space on the opposite side of the engine (E) with the radiator (21) in between in the engine room (10), and controls the engine (E) And a unit (100).

  A work vehicle (1) according to claim 2 is the work vehicle (1) according to claim 1, further comprising an engine ECU bracket (101) for supporting the engine control unit (100), wherein the engine ECU bracket ( 101) is characterized in that it is erected in a space on either the left or right side in the engine room (10) and on the opposite side of the engine (E) in the engine room (10).

  The work vehicle (1) according to claim 3 is the work vehicle (1) according to claim 2, wherein the front of the radiator (21) on a base plate (11) forming a bottom surface of the engine room (10). The engine ECU bracket (101) is either left or right of the air conditioner capacitor (42) supported by the capacitor bracket (43). The capacitor bracket (43) supports the air conditioner capacitor (42). It is characterized by being erected on one side.

  The work vehicle (1) according to claim 4 is the work vehicle (1) according to claim 3, wherein the engine ECU bracket (101) has legs (102) extending upward from the base plate (11). ), And a fixing portion that is provided continuously from the leg portion (102), to which the engine control unit (100) is attached and is fixed to the capacitor bracket (43) above the air conditioner capacitor (42). (103), and the engine control unit (100) is mounted on the engine ECU bracket (101) so as to be disposed on the upper side of the air conditioner condenser (42) with the connector portion (100a) facing downward. It is supported.

  The work vehicle (1) according to claim 5 is the work vehicle (1) according to any one of claims 1 to 4, wherein the engine control unit (100) is located in the engine room (10). In the installed state, it has a breather hole (106) through which the breather hose (44) is inserted, and a cover (107) that covers the breather hole (106).

  According to the first aspect of the present invention, since the engine control unit is disposed at a position where a large amount of cooling air flows in the engine room and is not easily affected by the heat of the engine, the cooling performance of the engine control unit is improved. Can be improved.

  According to the invention described in claim 2, in addition to the effect of the invention described in claim 1, the engine control unit is located at a position where a large amount of cooling air flows in the engine room and is hardly affected by the heat of the engine. Can be installed.

  According to the third aspect of the present invention, like the effect of the second aspect, the engine control unit is installed at a position where a large amount of cooling air flows in the engine room and is hardly affected by the heat of the engine. can do.

  According to the invention described in claim 4, in addition to the effect of the invention described in claim 3, the engine control unit can be installed at a distance from the base plate by the engine ECU bracket. Thereby, it is possible to suppress the influence of water entering the engine control unit from below. Moreover, the vibration applied to the engine control unit can be suppressed by fixing the fixing portion to the capacitor bracket.

  According to the invention described in claim 5, in addition to the effect of the invention described in any one of claims 1-4, the heat in the engine control unit is released from the breather hole by having the breather hole. be able to. In this case, by having the breather hole on the inner surface, it is possible to prevent water from entering the engine control unit from the breather hole. Moreover, by having a cover that covers the breather hole, it is possible to further suppress water from entering the engine control unit.

FIG. 1 is an explanatory diagram of a work vehicle according to an embodiment. FIG. 2 is a right side view showing the isolation part in the engine room. FIG. 3 is a perspective view showing the bonnet. FIG. 4 is a schematic explanatory view of the hood closed. FIG. 5 is a perspective view (No. 1) showing an air cleaner and an air cleaner bracket. FIG. 6 is a perspective view (No. 2) showing the air cleaner and the air cleaner bracket. FIG. 7 is a perspective view showing the engine control unit and the engine ECU bracket. FIG. 8A is a perspective view showing a breather hole of the engine control unit. FIG. 8B is a perspective view showing a breather hole cover of the engine control unit.

  Hereinafter, an embodiment of a work vehicle disclosed in the present application will be described in detail with reference to the accompanying drawings. In addition, this invention is not limited by embodiment shown below.

<Overall configuration of work vehicle (tractor) 1>
First, the overall configuration of the work vehicle 1 will be described with reference to FIG. FIG. 1 is an explanatory diagram of a work vehicle 1 according to the embodiment, and is a schematic left side view of the work vehicle 1. Hereinafter, a tractor will be described as an example of the work vehicle 1. A tractor 1 that is a work vehicle is an agricultural tractor that performs work on a farm field or the like while traveling on its own.

  In the following description, the front-rear direction is a traveling direction when the tractor 1 travels straight, and the front side of the traveling direction is defined as “front” and the rear side is defined as “rear”. The traveling direction of the tractor 1 is a direction from a cockpit 8 (to be described later) toward a steering wheel 9 during straight travel (see FIG. 1).

  The left-right direction is a direction that is horizontally orthogonal to the front-rear direction. In the following, left and right are defined toward the “front” side. That is, the left hand side is “left” and the right hand side is “right” in a state in which the operator (also referred to as an operator) of the tractor 1 is seated on the cockpit 8 and faces forward.

  The vertical direction is the vertical direction. The front-rear direction, the left-right direction, and the up-down direction are orthogonal to each other. Each direction is defined for convenience of explanation, and the present invention is not limited by these directions. Hereinafter, the tractor 1 may be referred to as “airframe”.

  As shown in FIG. 1, the tractor 1 includes a body frame 2, an engine E, a bonnet 3, a front wheel 4, a rear wheel 5, and a mission case 6. The body frame 2 is a frame that supports the entire body. The engine E is a driving source of the airframe and is a heat engine such as a diesel engine or a gasoline engine. The engine E is accommodated in the engine room 10 (see FIG. 2).

  The bonnet 3 is provided to be openable and closable at the front of the machine body. The bonnet 3 covers the engine E housed in the engine room 10. That is, the engine room 10 is formed inside the bonnet 3 in a closed state. A further configuration of the bonnet 3 will be described later with reference to FIG.

  The front wheels 4 are a pair of left and right, and are mainly steering wheels, that is, steering wheels. The rear wheels 5 are a pair of left and right, and are mainly driving wheels, that is, driving wheels. The mission case 6 is provided in the lower part of the body frame 2. The transmission case 6 is provided with a transmission, and the rotational power output from the engine E accommodated in the engine room 10 is appropriately reduced by the transmission and transmitted to the rear wheels 5 as drive wheels.

  Further, the tractor 1 includes a cabin 7. The cabin 7 forms a control space and includes a cockpit 8 and a steering wheel 9 therein. The cockpit 8 is a driver's seat. The steering wheel 9 is operated by a driver when the front wheel 4 which is a steering wheel is steered. A display unit (meter panel) for displaying various information is provided in front of the steering wheel 9.

  In the cabin 7, for example, a forward / reverse lever, an accelerator lever, and the like are provided in front of the cockpit 8. In the cabin 7, for example, a main transmission lever, a sub transmission lever, and the like are provided on the right side of the cockpit 8. In the cabin 7, for example, an accelerator pedal, a brake pedal, a clutch pedal, and the like are provided below the steering wheel 9.

  Further, the tractor 1 includes a PTO (Power Take-off) shaft 50. The PTO shaft 50 protrudes rearward from the mission case 6. The PTO shaft 50 transmits the rotational power output from the engine E to a work machine that performs work in the field. Examples of the working machine include a rotary tiller that performs tillage work and a fertilizer that performs fertilization work. In addition, the tractor 1 includes a lift arm for connecting a work machine in addition to the PTO shaft 50 at the rear part.

  The tractor 1 includes an engine control unit (hereinafter referred to as an engine ECU (Electronic Control Unit)) 100. The engine ECU 100 is housed in the engine room 10 and controls the engine E. The engine ECU 100 constitutes a drive control system of the tractor 1 together with, for example, a travel system ECU that controls the travel speed by controlling the rotation of the drive wheels (rear wheels 5) and a work machine lift system ECU that controls the lift of the work implement. .

<Isolation part 20 in engine room 10>
Next, the isolation part 20 in the engine room 10 will be described with reference to FIG. FIG. 2 is a right side view showing the isolation part 20 in the engine room 10. As shown in FIG. 2, the engine room 10 that houses the engine E is formed when the hood 3 is closed. The isolation unit 20 is erected in the engine room 10 and separates the engine room 10 from front to back so as to form two spaces.

  A radiator 21 that cools the cooling water of the engine E is provided in the engine room 10. The radiator 21 constitutes the isolation part 20 including the radiator bracket 22. The radiator 21 has a rectangular plate shape as a whole, and is disposed so that the surface direction is orthogonal to the front-rear direction, thereby separating the engine room 10 from front to back. The radiator 21 is supported by the radiator bracket 22 and is erected on the base plate 11 that forms the bottom surface of the engine room 10 together with the radiator bracket 22.

  The radiator bracket 22 is provided on the left and right side portions of the radiator 21 and supports the radiator on the base plate 11 in the engine room 10 as described above. The radiator bracket 22, together with the radiator 21, separates the engine room 10 from front to back so as to form two spaces. As shown in FIG. 2, the radiator bracket 22 has an inclined surface 22a that is inclined toward the left side in FIG. The inclined surface 22 a is formed on the front surface at the left and right side end portions of the radiator bracket 22.

  The radiator bracket 22 includes a dustproof net 23. The dust-proof net 23 is provided over the left and right directions on the front surface of the radiator 21. The dustproof net 23 includes a net surface 23a (see FIG. 5). That is, the dustproof net 23 is disposed so that the direction of the net surface 23a is orthogonal to the front-rear direction. Moreover, the dustproof net 23 is equipped with the attachment / detachment part 23b with respect to a radiator bracket at the side edge part on either side. The attachment / detachment portion 23b makes the dust-proof net 23 attachable / detachable with respect to the radiator bracket 22 by the magnetic force of a magnet, for example.

  An accommodation space is formed between the radiator 21 and the dust net 23 in the front-rear direction. In the accommodation space, at least one of an oil cooler 25 and a fuel cooler 26 (both see FIG. 7) is provided. The oil cooler 25 is a device that cools the oil (hydraulic oil) of the drive system, and the fuel cooler 26 is a device that cools the fuel of the fuselage.

  In addition, when providing both the oil cooler 25 and the fuel cooler 26, it is preferable to arrange | position the oil cooler 25 and the fuel cooler 26 along with the left-right direction. In this case, the left and right sides and the upper side of the oil cooler 25 and the fuel cooler are covered with the radiator bracket 22.

  In addition to the radiator 21 and the radiator bracket 22, the isolation unit 20 includes a partition plate (also a heat shield plate) 24. The partition plate 24 is provided on the upper portion of the radiator bracket 22. The partition plate 24 extends in the left-right direction and is arranged so that the direction of the surface is orthogonal to the front-rear direction, thereby separating the upper part in the engine room 10 from front to back. As shown in FIG. 2, the partition plate 24 is inclined rearward at an inclination angle equivalent to that of the inclined surface 22 a so as to continue from the inclined surface 22 a of the radiator bracket 22 in a side view (right side view).

<Bonnet 3>
Next, the bonnet will be described with reference to FIGS. 3 and 4. FIG. 3 is a perspective view showing the bonnet 3. FIG. 4 is a schematic explanatory view showing a state where the bonnet 3 is closed. FIG. 3 is a view (perspective view) of the bonnet 3 as viewed obliquely from the lower left. As shown in FIG. 3, the bonnet 3 has a space (bonnet space) 31 inside so as to cover the engine E (see FIG. 2) and form the engine room 10.

  The bonnet 3 includes a support shaft 32 and an insulator 33 inside. The support shaft 32 is provided in a pair of left and right, and each axis AX is provided along the left and right direction. An axis AX of the support shaft 32 becomes a rotation shaft when the bonnet 3 is opened and closed. That is, the bonnet 3 is provided so as to be opened and closed by rotating about the axis (rotating axis) AX of the support shaft 32. The support shaft 32 is preferably provided at the rear portion of the bonnet 3, and more preferably provided at the rear end portion of the bonnet 3.

  The insulator 33 is provided on the inner peripheral surface 34 of the bonnet 3. The insulator 33 is provided along the inner peripheral surface 34 so as to partition the inner peripheral surface 34 of the bonnet 3 forward and backward. The insulator 33 is a sponge-like buffer member, for example. As shown in FIG. 4, the insulator 33 is in a state where the bonnet 3 is closed by rotating in the R direction about the rotation axis AX, and the inclined surface 22 a (the partition plate 24 of the partition plate 24). The inner peripheral surface 34 of the bonnet 3 and the isolation portion 20 are sealed.

  As described above, according to the work vehicle (tractor) 1 according to the embodiment, the insulator 33 has the inclined surface 22a inclined toward the rotation axis AX side of the bonnet 3 so that the insulator 33 The surface abuts against the inclined surface 22a. Thereby, concentration of loads, such as the insulator 33 contacting the edge part of the isolation part 20, can be relieved, and the hood 3 such as the insulator 33 and the isolation part 20 (the radiator 21, the radiator bracket 22, the partition plate 24), etc. Deterioration of internal parts can be suppressed.

  In this case, since the inclined surface 22a of the separating portion 20 is inclined toward the rotation axis AX, even if the bonnet 3 is rotated in a trajectory that draws an arc centered on the rotation axis AX, the inclined surface 22a is not insulated. Since the posture is to greet 33 at an elevation angle, the insulator 33 is unlikely to hit the edge portion of the isolation portion 20.

  Further, the rotation axis AX is provided at the rear part (rear end part) of the bonnet 3 and the inclined surface 22a of the isolation part 20 is inclined rearward, so that the bonnet 3 has an arc centered on the rotation axis AX. Since the inclined surface 22a is in a posture to greet the insulator 33 at an elevation angle even if it is rotated in a trajectory for drawing, the insulator 33 is difficult to hit the edge portion of the isolation part 20.

  In addition, since the inclined surface 22a is formed on the front surface of the radiator bracket 22 constituting the isolation portion 20, the front surface of the radiator bracket 22 can be operated even when the bonnet 3 rotates in a trajectory that draws an arc around the rotation axis AX. Since the inclined surface 22 a is in a posture to greet the insulator 33 at an elevation angle, the insulator 33 is difficult to hit the edge portion of the radiator bracket 22.

  Further, by providing the dustproof net 23, the oil cooler 25 and the fuel cooler 26 can be protected from dust and the like together with the radiator 21. Further, since the oil cooler 25 and the fuel cooler 26 are disposed in the vicinity of the radiator 21, maintenance can be performed at one place. Thereby, maintainability can be improved.

  Further, by providing the partition plate 24 on the upper portion of the radiator bracket 22, it is possible to improve the sealing performance of each space separated in the engine room 10. Further, since the partition plate 24 is inclined to the rear side, the front surface of the partition plate 24 greets the insulator 33 at an elevation angle even when the bonnet 3 rotates in a circular path centering on the rotation axis AX. Therefore, it is difficult for the insulator 33 to hit the edge portion of the partition plate 24.

<Air cleaner 40 and air cleaner bracket 41>
Next, the air cleaner 40 and the air cleaner bracket 41 will be described with reference to FIGS. 5 and 6. 5 and 6 are perspective views showing the air cleaner 40 and the air cleaner bracket 41, respectively. 5 is a view (perspective view) of the air cleaner 40 and the air cleaner bracket 41 as viewed from the upper right side (perspective view), and FIG. 6 is a view (perspective view) of the air cleaner 40 and the air cleaner bracket 41 as viewed from the upper right front side. It is.

  As shown in FIGS. 5 and 6, an air cleaner 40 is provided in the engine room 10. The air cleaner 40 is provided in front of the partition plate 24. The air cleaner 40 is a device that removes impurities in the air supplied to the engine E (see FIG. 2). The air cleaner 40 is supported in front of the partition plate 24 by an air cleaner bracket 41. The air cleaner bracket 41 extends forward from the partition plate 24.

  An air conditioner condenser (air conditioner condenser) 42 is provided on the base plate 11 in the engine room 10. The air conditioner capacitor 42 is supported by a capacitor bracket 43. The capacitor bracket 43 is erected in front of the radiator 21. The air cleaner bracket 41 and the capacitor bracket 43 are fixed to each other. In this case, fixing by welding is preferable.

  Thus, rigidity can be improved by fixing the partition plate 24, the air cleaner bracket 41, and the capacitor bracket 43.

  The capacitor bracket 43 includes a pipe-shaped frame portion. The condenser bracket 43 is inserted with a breather hose 44 (for blow-by gas discharge) of the front axle. Thereby, the breather hose 44 can be easily routed and the space efficiency in the engine room 10 can be improved.

  In addition, a hole for the breather hose 44 is formed in the upper portion of the frame portion of the capacitor bracket 43. Thereby, the pressure of an axle bracket can be released in air | atmosphere. An air conditioner condenser 42 is provided in front of the frame portion of the condenser bracket 43.

  Also in the capacitor bracket 43, a dust-proof net 43a that can be attached and detached by a magnet-type attaching / detaching portion 43b, for example, is attached in the same manner as the radiator bracket 22 described above.

  Further, an intercooler 45 (and an intercooler bracket 47) is fixed to the capacitor bracket 43. That is, the intercooler 45 is supported on the base plate 11 by the capacitor bracket 43.

  Further, for example, an intercooler pipe 46 or a harness may be passed through the partition plate 24 having a vertically divided structure and sandwiched between the partition plates 24. In this case, a U-shaped notch 24a for penetrating the intercooler pipe 46 is formed at the upper edge of the lower partition plate 24. The U-shaped notch 24 a may be formed at the lower end edge of the upper partition plate 24. The notch 24a may be provided with a buffer material for relaxing the concentration of load when the intercooler pipe 46 is supported.

  The intercooler bracket 47 is also attached with a dustproof net 47a that can be easily attached and detached by, for example, a magnet-type attaching / detaching portion 47b, similarly to the radiator bracket 22 and the capacitor bracket 43 described above.

  The partition plate 24 may be provided with a hose connection pipe 48 that penetrates the partition plate 24 in the front-rear direction.

  As shown in FIG. 5, the base plate 11 is formed with a recess 11 a. A battery 49 is accommodated in the recess 11a. Thereby, the battery 49 can be installed in a low position, the battery 49 can be installed so as not to block the front of the radiator 21, the intercooler 45, and the air conditioner condenser 42, and the cooling efficiency of these can be improved. Can do.

  Further, the rear end portion of the air cleaner bracket 41 is fixed to the front surface of the radiator bracket 22. Further, the front portion of the bonnet 3 (see FIG. 3) and the portion covering the front side of the radiator bracket 22 in the engine room 10 are formed such that the front surface, the upper surface, and the left and right side surfaces can inhale air. Thereby, a large amount of air can be sucked into the engine room 10 and the cooling efficiency can be improved.

  Further, the engine ECU 100 is arranged on the side (left side) of the capacitor bracket by being supported by an engine ECU bracket 101 (see FIG. 7) described later. Thereby, it can suppress that engine ECU100 which is a precision instrument receives the influence of the water which permeates from the upper surface of the bonnet 3. FIG.

<Arrangement of engine ECU 100>
Next, the arrangement of engine ECU 100 will be described with reference to FIG. FIG. 7 is a perspective view showing the engine control unit (engine ECU) 100 and the engine ECU bracket 101. FIG. 7 is a view (perspective view) of engine ECU 100 and engine ECU bracket 101 as viewed from the upper front diagonally. The engine ECU 100 is a precision device that controls the engine E as described above.

  As shown in FIG. 7, the engine room 10 is divided into two front and rear spaces by a radiator 21 that constitutes the isolation unit 20 being erected. The engine E is disposed in one of the two spaces (rear space) in the engine room 10. The engine ECU 100 is arranged in a space (front space) on the opposite side to the engine E with the radiator 21 sandwiched between the two front and rear spaces. The engine ECU 100 is arranged so as to be shifted to either the left or right side in the engine room 10.

  Engine ECU 100 is supported in engine room 10 by engine ECU bracket 101. The engine ECU bracket 101 is disposed in a space (front space) opposite to the engine E across the radiator 21 in the two front and rear spaces, and is disposed on either the left or right side in the engine room 10. Is done. Further, the engine ECU bracket 101 is installed upright on either the left or right side of the air conditioner condenser 42 (see FIGS. 8A and 8B) supported by the condenser bracket 43.

  As shown in FIG. 7, the engine ECU bracket 101 includes a leg portion 102 and a fixing portion 103. The leg portion 102 is erected so as to extend upward from the base plate 11 that forms the bottom surface of the engine room 10. The fixing portion 103 is provided continuously from the leg portion 102 above the leg portion 102. When engine ECU 100 is fixed, engine ECU 100 is positioned above base plate 11. The fixing portion 103 is fixed to the capacitor bracket 43 (see FIGS. 8A and 8B) at the upper portion of the air conditioner capacitor 42.

  Engine ECU 100 is supported by engine ECU bracket 101 with connector portion 100a facing downward. Further, engine ECU 100 is supported by engine ECU bracket 101 so as to be disposed on the upper side of air conditioner condenser 42. Further, engine ECU 100 is arranged around an axis in the vertical direction and at an angle with respect to the front-rear direction. Thereby, engine ECU100 can be arrange | positioned along the shape of the bonnet 3 (refer FIG. 3), and interference and a collision with the bonnet 3 can be prevented.

  In addition, since a space is formed below engine ECU 100 supported by engine ECU bracket 101, for example, harness 104 can be correctly fixed in the space, and normal communication can be performed. Further, by fixing the harness 104 in the vicinity of the connector portion 100a of the engine ECU 100, it is possible to suppress overloading of the connector portion 100a, prevent the connector from being disconnected, and perform normal communication.

  In addition, a harness stay 105 for fixing the harness 104 is provided at a lower portion (leg portion 102) of the engine ECU bracket. As a result, it is possible to perform normal communication while preventing connector disconnection and the like. Moreover, as for engine ECU bracket 101, the fixing | fixed part 103 covers the outer side surface (left side surface) of engine ECU. Thereby, the influence of the water which permeates from the side surface of the bonnet 3 can be suppressed.

  As described above, according to the work vehicle (tractor) 1 according to the embodiment, the engine ECU 100 is disposed at a position where a large amount of cooling air flows in the engine room 10 and is not easily affected by the heat of the engine E. Therefore, the cooling performance of engine ECU 100 can be improved. Further, the engine ECU 100 can be installed at a position where a large amount of cooling air flows in the engine room 10 and is not easily affected by the heat of the engine E.

  Further, the engine ECU 100 can be installed at a distance upward from the base plate 11 by the engine ECU bracket 101. Thereby, it is possible to suppress the influence of water or the like entering the engine ECU 100 from below. Further, since the fixing portion 103 is fixed to the capacitor bracket 43, vibration applied to the engine ECU 100 can be suppressed.

<Breaser hole 106 and breather hole cover 107 of engine ECU 100>
Next, breather hole 106 and breather hole cover 107 of engine ECU 100 will be described with reference to FIGS. 8A and 8B. FIG. 8A is a perspective view showing breather hole 106 of engine control unit (engine ECU) 100. FIG. 8B is a perspective view showing breather hole cover 107 of engine control unit (engine ECU) 100.

  As shown in FIG. 8A, engine ECU 100 has a hole (breather hole) 106 through which breather hose 44 is inserted. The breather hole 106 is formed on the surface facing the inner side (right side) when the engine ECU 100 is installed in the engine room 10. As shown in FIG. 8B, the breather hole 106 is covered with a plate-like breather hole cover 107.

  Thus, by providing the breather hole 106, the heat in the engine ECU 100 can be released from the breather hole 106. Moreover, by having the breather hole 106 on the inner surface of the engine ECU 100, for example, water can be prevented from entering the engine ECU 100 from the breather hole 106 during cleaning. Further, by having the breather hole cover 107, it is possible to further suppress water from entering the engine ECU 100.

  A cushioning material may be provided between engine ECU 100 and engine ECU bracket. As a result, the shock absorbing material can absorb vibrations and operate engine ECU 100 stably. A receiver dryer may be provided between the engine ECU 100 and the radiator 21 on the side of the intercooler bracket 47.

  Further effects and modifications can be easily derived by those skilled in the art. Thus, the broader aspects of the present invention are not limited to the specific details and representative embodiments shown and described above. Accordingly, various modifications can be made without departing from the spirit or scope of the general inventive concept as defined by the appended claims and their equivalents.

1 Work vehicle (tractor)
2 Body frame 3 Bonnet 4 Front wheel 5 Rear wheel 6 Mission case 7 Cabin 8 Pilot seat 9 Steering wheel 10 Engine room 11 Base plate 11a Recess 20 Separation part 21 Radiator 22 Radiator bracket 22a Inclined surface 23 Dust-proof net 23a Net surface 23b Detachable part 24 Partition Plate 24a Notch 25 Oil cooler 26 Fuel cooler 31 Bonnet space 32 Support shaft 33 Insulator 34 Inner peripheral surface 40 Air cleaner 41 Air cleaner bracket 42 Air conditioner condenser 43 Condenser bracket 43a Dustproof net 43b Detachable part 44 Breather hose 45 Intercooler 46 Intercooler 46 Intercooler pipe 46 Intercooler bracket 47a Dust-proof net 47b Detachable section 48 Pipe for hose connection 49 Battery 50 PTO shaft 100 Engine control unit (engine ECU)
DESCRIPTION OF SYMBOLS 101 Engine ECU bracket 102 Leg part 103 Fixing part 104 Harness 105 Harness stay 106 Breather hole 107 Breather hole cover AX Rotating shaft E Engine

Claims (5)

Engine,
An engine room housing the engine;
A radiator that is erected so as to include the engine in any one of the engine rooms and to separate the engine room from front to back;
An engine control unit that is disposed on one of the left and right sides in the engine room and disposed in a space on the opposite side of the engine from the engine in the engine room, and controls the engine. Feature work vehicle. An engine ECU bracket for supporting the engine control unit;
The engine ECU bracket is
The work vehicle according to claim 1, wherein the work vehicle is erected in a space on either the left or right side in the engine room and in a space on the opposite side of the engine in the engine room. A capacitor bracket that is erected in front of the radiator on a base plate that forms a bottom surface of the engine room and supports an air conditioner capacitor;
The engine ECU bracket is
The work vehicle according to claim 2, wherein the work vehicle is erected on either the left or right side of the air conditioner capacitor supported by the capacitor bracket. The engine ECU bracket is
Legs extending upward from the base plate;
A fixed portion that is continuously provided upward from the leg portion, to which the engine control unit is attached and fixed to the capacitor bracket above the air conditioner capacitor;
The engine control unit is
The work vehicle according to claim 3, wherein the work vehicle is supported by the engine ECU bracket so as to be disposed on an upper side of the air conditioner capacitor with a connector portion facing downward. The engine control unit is
5. The apparatus according to claim 1, further comprising: a breather hole through which a breather hose is inserted in a surface facing inward in a state of being installed in the engine room, and a cover that covers the breather hole. The work vehicle according to item 1.