Inlet air temperature sensor installation structure

Abstract

To ensure protection performance and assemblability of an inlet air temperature sensor.SOLUTION: An intake air temperature sensor (70) detects the temperature of intake air into an engine. An air cleaner case (47) is mounted behind the engine. An outlet tube (48) continues to the front surface of the air cleaner case. A rear suspension (37) is mounted in front of the air cleaner case. The outlet tube includes a passage portion (50) passing on one side of the rear suspension in the vehicle width direction and extending forward. The intake air temperature sensor is mounted to a side surface of the outlet tube on the other side in the vehicle width direction.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to an installation structure for an intake air temperature sensor. [Background technology]

[0002] Conventionally, an intake air temperature sensor for a saddle-type vehicle is known that is installed in an air cleaner (see, for example, Patent Document 1). An outlet tube extends forward from the air cleaner described in Patent Document 1, and a cylinder head is connected to the outlet tube via a throttle body and an intake pipe. An air cleaner case for the air cleaner is provided below the outlet tube, and an intake air temperature sensor is provided on the lower front surface of the air cleaner case. When air is taken in to the air cleaner case, the temperature of the intake air is detected by the intake air temperature sensor. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 6006977 Summary of the Invention [Problem to be solved by the invention]

[0004] However, when the intake air temperature sensor is installed below the air cleaner where there is relatively more space, as in Patent Document 1, water droplets and mud are likely to adhere to the intake air temperature sensor, degrading its protective performance and making it difficult to assemble. Furthermore, in recent years, saddle-type vehicles have been required to add other components such as electronic devices to improve drivability, and depending on the installation layout of the intake air temperature sensor, it can be difficult to secure the installation space for the other components.

[0005] The present invention has been made in consideration of the above-mentioned points, and has an object to provide an installation structure for an intake air temperature sensor that can ensure the protection performance and ease of assembly of the intake air temperature sensor. [Means for solving the problem]

[0006] One embodiment of the intake air temperature sensor installation structure of the present invention is an intake air temperature sensor installation structure that detects the temperature of the air intake into an engine, wherein an air cleaner case is installed rear of the engine, an outlet tube is connected to the front of the air cleaner case, a rear suspension is installed in front of the air cleaner case, the outlet tube has a passage portion that extends forward through one side of the rear suspension in the vehicle width direction, and the intake air temperature sensor is installed on the side of the outlet tube on the other side in the vehicle width direction, thereby solving the above-mentioned problems. Effect of the Invention

[0007] According to the intake air temperature sensor installation structure of one aspect of the present invention, the side surface of the outlet tube on the other side in the vehicle width direction is positioned inward in the vehicle width direction from the passage portion of the outlet tube that passes through one side of the rear suspension in the vehicle width direction. The intake air temperature sensor installed on the side surface of the outlet tube on the other side in the vehicle width direction is less likely to protrude outward in the vehicle width direction, making it less likely to become contaminated with water droplets or mud. Furthermore, assembling is ensured by facing the intake air temperature sensor to the side. Furthermore, the intake air temperature sensor can be installed using the narrow space on the other side in the vehicle width direction of the outlet tube, and the space above and below the outlet tube can be used to install other components. [Brief description of the drawings]

[0008] [Figure 1] FIG. 2 is a right side view of the saddle-type vehicle of the present embodiment. [Diagram 2] FIG. 2 is a right side view of the center portion of the vehicle body of the present embodiment. [Diagram 3] FIG. 2 is a left side view of the center portion of the vehicle body of the present embodiment. [Figure 4] FIG. 2 is a front view of the air cleaner of the present embodiment. [Diagram 5] FIG. 2 is a top view of the center part of the vehicle body of the present embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] The intake air temperature sensor of one aspect of the present invention detects the temperature of intake air to the engine. An air cleaner case is installed behind the engine. An outlet tube is connected to the front of the air cleaner case, and a rear suspension is installed in front of the air cleaner case. The outlet tube has a passage portion that passes through one side of the rear suspension in the vehicle width direction and extends forward, and the intake air temperature sensor is installed on a side surface of the outlet tube on the other side in the vehicle width direction. The side surface of the outlet tube on the other side in the vehicle width direction is positioned on the inner side in the vehicle width direction than the passage portion of the outlet tube that passes through the one side of the rear suspension in the vehicle width direction. The intake air temperature sensor installed on the side surface of the other side in the vehicle width direction of the outlet tube is unlikely to protrude outward in the vehicle width direction, making it difficult for water droplets and mud to adhere to the sensor. In addition, the intake air temperature sensor is directed to the side, ensuring ease of assembly. In addition, the intake air temperature sensor can be installed by utilizing a narrow space on the other side in the vehicle width direction of the outlet tube, and the spaces above and below the outlet tube can be used to install other parts. EXAMPLES

[0010] The saddle riding vehicle of this embodiment will be described below with reference to the accompanying drawings. Fig. 1 is a right side view of the saddle riding vehicle of this embodiment. In the following drawings, the arrow Fr indicates the front of the vehicle, the arrow Re indicates the rear of the vehicle, the arrow L indicates the left side of the vehicle, the arrow R indicates the right side of the vehicle, the arrow U indicates the upper side of the vehicle, and the arrow D indicates the lower side of the vehicle.

[0011] As shown in Fig. 1, the saddle-type vehicle 1 is configured by mounting various parts such as an engine 31 and an electrical system on a body frame 10. A pair of main frames 12 extend diagonally downward and rearward from a head pipe (not shown) of the body frame 10, and the rear portions of the pair of main frames 12 are bent downward to form a pair of body frames 13. A down frame 14 extends downward from the head pipe, and a pair of under frames 15 bent rearward are connected to the lower portion of the down frame 14. The rear ends of the pair of under frames 15 are connected to the lower portions of the pair of body frames 13, so that the body frame 10 is formed into a cradle shape.

[0012] A front fork 16 is supported on the head pipe via a steering shaft (not shown) so as to be steerable. A handlebar 17 is provided on the upper part of the front fork 16, and a front wheel 18 is rotatably supported on the lower part of the front fork 16. A pair of upper seat rails (seat rails) 21 extend rearward from the upper part of the pair of body frames 13, and a pair of lower seat rails 22 extend obliquely rearward from the lower part of the pair of body frames 13. Rear parts of the pair of lower seat rails 22 are fixed to rear parts of the pair of upper seat rails 21. A seat 23 is supported from below by the pair of upper seat rails 21, and the pair of upper seat rails 21 is supported from below by the pair of lower seat rails 22.

[0013] A swing arm 24 is supported by the body frame 13 so as to be able to swing. The swing arm 24 extends rearward from the body frame 13, and a rear wheel 25 is rotatably supported at the rear end of the swing arm 24. A rear suspension 37 is provided near the front end of the swing arm 24, and the swing arm 24, the rear suspension 37, and the body frame 13 are connected via a link mechanism. The rear suspension 37 expands and contracts in accordance with the swing of the swing arm 24, thereby absorbing unevenness in the road surface, suppressing vibration, and improving the contact between the road surface and the rear wheel 25.

[0014] The engine 31 is a four-stroke single-cylinder engine, and is suspended inside the body frame 10 via a number of suspension brackets. A cylinder assembly, in which a cylinder 33, a cylinder head 34, and a cylinder head cover 35 are stacked, is attached to the upper part of a crankcase 32 of the engine 31. Intake system components such as an intake pipe 41, a throttle body 42, and an air cleaner 46 are connected to the rear side of the engine 31 (cylinder head 34). The throttle body 42 is disposed below the main frame 12, and the air cleaner 46 is disposed below the seat rail 21.

[0015] The saddle riding type vehicle 1 is provided with an intake air temperature sensor 70 that detects the temperature of the intake air to the engine 31. If the intake air temperature sensor 70 is provided in the installation space of the air cleaner 46 or the fuel tank (not shown), it will be necessary to reduce the capacity of the air cleaner 46 or the fuel tank or to increase the size of the vehicle. In addition, although there is a relatively large amount of space below the air cleaner 46, if the intake air temperature sensor 70 is provided in the space below the air cleaner 46, water droplets, mud, etc. splashed up by the wheels or the like will adhere to the intake air temperature sensor 70, deteriorating the protective performance of the intake air temperature sensor 70 and also deteriorating the ease of assembly.

[0016] Furthermore, in the saddle riding type vehicle 1, the addition of electronic devices is required in order to comply with recent exhaust gas regulations and improve drivability. For example, an electronically controlled throttle body 42 is employed in the saddle riding type vehicle 1, and it is necessary to ensure space for installing an accelerator position sensor 53. It is desirable to ensure space above the outlet tube 48 of the air cleaner 46 for installing other components such as the accelerator position sensor 53. Therefore, in this embodiment, an intake air temperature sensor 70 is installed on the right side of the outlet tube 48, on the side opposite to the passage portion 50 (see FIG. 3) of the outlet tube 48 that bypasses the rear suspension 37.

[0017] The installation structure of the intake air temperature sensor will be described with reference to Figures 2 to 4. Figure 2 is a right side view of the center part of the vehicle body of this embodiment. Figure 3 is a left side view of the center part of the vehicle body of this embodiment. Figure 4 is a front view of the air cleaner of this embodiment.

[0018] 2 and 3, an air cleaner 46 is installed in a space that is triangular in side view and surrounded by the body frame 13, the upper seat rail 21, and the lower seat rail 22 in the center of the vehicle body. The dirty side of the air cleaner 46 is formed by an air cleaner case 47, and the clean side of the air cleaner 46 is formed by an outlet tube 48. The air cleaner case 47 is formed in a box shape that is triangular in side view, and is installed behind the engine 31 and below the pair of upper seat rails 21. A filter is provided in the air cleaner case 47, and air taken in by the air cleaner case 47 is filtered by the filter.

[0019] An outlet tube 48 is connected to the front surface of the air cleaner case 47 and extends forward from the air cleaner case 47. The outlet tube 48 is connected to the rear surface of the cylinder head 34 via the throttle body 42 and the intake pipe 41. An intake passage is formed by the outlet tube 48, the throttle body 42, and the intake pipe 41. Air is sent from the outlet tube 48 to the throttle body 42, and after the intake amount is adjusted by the throttle body 42, the air is supplied from the throttle body 42 through the intake pipe 41 to the cylinder head 34.

[0020] A throttle valve (not shown) is provided in the intake passage of the throttle body 42, and an actuator 43 is provided on the side of the throttle body 42. The actuator 43 is provided with a reduction gear train that transmits the motor driving force to a valve shaft 44 of the throttle valve, and an electronic board for controlling the motor. The electronic board is housed inside a rectangular side cover of the actuator 43, and this side cover is attached to the throttle body 42 so as to face the outside of the vehicle. The motor driving force is transmitted to the valve shaft 44 by the actuator 43, and the throttle valve in the intake passage opens and closes to adjust the amount of intake air.

[0021] The upper portions of the pair of body frames 13 protrude diagonally upward and rearward, and this protrusion 26 is connected via frame bridges 27, 28 (see FIG. 5). A bracket 29 is provided in the center of the lower frame bridge 28 in the vehicle width direction, and an upper end portion 38 of a rear suspension 37 is fixed to the bracket 29. The rear suspension 37 is installed in front of an air cleaner case 47, and a passage portion 50 of an outlet tube 48 extends forward from the air cleaner case 47 through the left side of the rear suspension 37 (one side in the vehicle width direction). A reservoir tank 39 is provided on the right side of the rear suspension 37 (the other side in the vehicle width direction).

[0022] The top surface of the outlet tube 48 is lower than the top surface of the air cleaner case 47, and an accelerator position sensor 53 is installed in the space above the outlet tube 48. The accelerator position sensor 53 is installed above the outlet tube 48 and between the pair of upper seat rails 21. The accelerator position sensor 53 is covered from the sides and below by the pair of upper seat rails 21 and the outlet tube 48, protecting the accelerator position sensor 53 from water droplets, mud, impacts, etc. An accelerator cable 52 is connected to the accelerator position sensor 53.

[0023] An intake air temperature sensor 70 is provided on the right side (the side on the other side in the vehicle width direction) of the outlet tube 48, and detects the intake air temperature inside the outlet tube 48. The intake air temperature sensor 70 is positioned between the front of the air cleaner case 47 and the reservoir tank 39 in a side view. The outlet tube 48 is curved so as to pass on the left side of the rear suspension 37. The right side of the outlet tube 48 is located more inward in the vehicle width direction than the left side, and the intake air temperature sensor 70 is less likely to protrude outside the vehicle and is protected from water droplets, mud, impacts, and the like.

[0024] As shown in Fig. 4, the air cleaner 46 is formed by connecting an outlet tube 48 to the front surface of an air cleaner case 47. The outlet tube 48 extends from upstream (rear) to downstream (front) so as to narrow the intake passage. The upstream side of the outlet tube 48 forms a chamber section 49 that connects to the air cleaner case 47, and the downstream side of the outlet tube 48 forms a passage section 50 that connects to the throttle body 42. The chamber section 49 curves to the left toward the front so as to avoid the rear suspension 37 and the reservoir tank 39 (see Fig. 2), and a cylindrical passage section 50 extends forward from the front end of the chamber section 49.

[0025] As described above, the chamber portion 49 is curved to the left, and the right side surface of the base end of the chamber portion 49 is recessed more inward in the vehicle width direction than the right side surface of the air cleaner case 47. The intake air temperature sensor 70 is installed on the right side surface of the base end of the chamber portion 49, utilizing the space created by the step between the chamber portion 49 and the air cleaner case 47. The axial direction of the intake air temperature sensor 70 is oriented in the vehicle width direction, and the detection end of the intake air temperature sensor 70 fits inside the chamber portion 49. The connector 71 of the intake air temperature sensor 70 protrudes outward from the chamber portion 49, but the connector 71 is located more inward in the vehicle width direction than the right side surface of the air cleaner case 47.

[0026] The intake air temperature sensor 70 is positioned at the same height as the passage section 50. By positioning the connector 71 of the intake air temperature sensor 70 high and oriented horizontally, water droplets and mud splashed up onto the rear wheel 25 (see FIG. 1) are less likely to adhere to the intake air temperature sensor 70. Because the connector 71 of the intake air temperature sensor 70 is oriented in the vehicle width direction, water is less likely to enter the sensor from the connector 71. The axial direction of the intake air temperature sensor 70 may be inclined so as to intersect with the vehicle width direction, rather than being in the vehicle width direction. Also, the intake air temperature sensor 70 and the passage section 50 do not need to be at exactly the same height, and it is sufficient that the intake air temperature sensor 70 and the passage section 50 are approximately at the same height.

[0027] In this way, by installing the intake air temperature sensor 70 on the right side surface of the outlet tube 48, a space for installing the accelerator position sensor 53 is secured above the outlet tube 48. The accelerator position sensor 53 is provided with a pulley 55 around which the accelerator cable 52 (see FIG. 2) is wound, and a sensor unit 61 that detects the amount of operation of the accelerator grip 51 from the amount of rotation of the pulley 55. The accelerator position sensor 53 is supported by the pair of upper seat rails 21 (see FIG. 5) via a seat bracket 63 and a sensor bracket 64, with the axis of the pulley 55 facing vertically.

[0028] The layout of the intake air temperature sensor will be described in detail with reference to Figures 2 and 5. Figure 5 is a top view of the center part of the vehicle body of this embodiment.

[0029] 2 and 5, a step is formed between the right side of the air cleaner case 47 and the right side of the outlet tube 48, and this step is utilized to install the intake air temperature sensor 70 on the right side of the chamber portion 49 of the outlet tube 48. In a side view, the intake air temperature sensor 70 is located between the air cleaner case 47 and the rear suspension 37. The intake air temperature sensor 70 is exposed from the right side (the other side in the vehicle width direction) between the air cleaner case 47 and the rear suspension 37, and the connector 71 of the intake air temperature sensor 70 faces toward the right side, improving the ease of installation of the intake air temperature sensor 70 from the right side.

[0030] In a top view, the intake air temperature sensor 70 is located between the air cleaner case 47 and the reservoir tank 39. A connector 71 on the tip side of the intake air temperature sensor 70 is located inside the right side surfaces of the air cleaner case 47 and the reservoir tank 39. More specifically, the connector 71 of the intake air temperature sensor 70 is positioned inside in the vehicle width direction of a straight line L that connects the right end of the air cleaner case 47 and the right end of the reservoir tank 39. The connector 71 of the intake air temperature sensor 70 is prevented from coming into contact with the ground when the vehicle rolls over, and the air cleaner case 47 and the reservoir tank 39 protect the intake air temperature sensor 70 from impacts when the vehicle rolls over.

[0031] In a top view, the rear suspension 37 is located in the center in the vehicle width direction, the passage portion 50 of the outlet tube 48 is located on the left side of the rear suspension 37, and the intake air temperature sensor 70 is located on the right side of the rear suspension 37. The spaces on both sides of the rear suspension 37 are used for installing the passage portion 50 and the intake air temperature sensor 70. Because the outlet tube 48 avoids the rear suspension 37 on the left side, the outlet tube 48 does not interfere with the reservoir tank 39. The reservoir tank 39 is located in front of the intake air temperature sensor 70 and protects the intake air temperature sensor 70 from water droplets and mud splashed up onto the front wheels 18.

[0032] In the center of the vehicle body, a pair of upper seat rails 21 extend rearward from the upper parts of the pair of body frames 13, and a pair of lower seat rails 22 extend rearward from the lower parts of the pair of body frames 13. The pair of upper seat rails 21 are located more inward in the vehicle width direction than the pair of lower seat rails 22. In a top view, the intake air temperature sensor 70 is covered from above by one of the upper seat rails 21, and is located more inward in the vehicle width direction than the lower seat rail 22. Even if the intake air temperature sensor 70 is installed on the right side surface of the outlet tube 48, the upper seat rail 21 and the lower seat rail 22 protect the intake air temperature sensor 70 from impacts when the vehicle rolls over.

[0033] An accelerator position sensor 53 is supported on the pair of upper seat rails 21 via a seat bracket 63 and a sensor bracket 64. A coupler 62 is provided to a sensor portion 61 of the accelerator position sensor 53, and a cable guide 57 is provided in front of the pulley 55 of the accelerator position sensor 53. The insertion port of the coupler 62 and the guide hole of the cable guide 57 face to the right, the same as the insertion port of the connector 71 of the intake air temperature sensor 70. An electric cable (not shown) for the accelerator position sensor 53, the accelerator cable 52, and an electric cable (not shown) for the intake air temperature sensor 70 are laid so as not to interfere with the intake system components.

[0034] As described above, according to the installation structure for the intake air temperature sensor 70 of this embodiment, the right side surface of the outlet tube 48 is positioned further inward in the vehicle width direction than the passage portion 50 of the outlet tube 48 that passes through the left side of the rear suspension 37. The intake air temperature sensor 70 installed on the right side surface of the outlet tube 48 is less likely to protrude outward in the vehicle width direction, making it less likely to become contaminated with water droplets or mud. Furthermore, since the intake air temperature sensor 70 is directed to the side, ease of installation is ensured. Furthermore, the intake air temperature sensor 70 can be installed using the narrow space on the right side of the outlet tube 48, and the spaces above and below the outlet tube 48 can be used to install the accelerator position sensor 53.

[0035] In this embodiment, the passage of the outlet tube passes through the left side of the rear suspension and extends forward, but the passage of the outlet tube may pass through the right side of the rear suspension and extend forward. Also, the intake air temperature sensor is provided on the right side of the outlet tube, but the intake air temperature sensor may be provided on the left side of the outlet tube.

[0036] Further, in this embodiment, the intake air temperature sensor is provided in the chamber portion of the outlet tube, but the intake air temperature sensor may be provided in the passage portion of the outlet tube.

[0037] In addition, in this embodiment, the seat rails of the saddle-ride type vehicle are configured by a pair of upper seat rails and a pair of lower seat rails, but the seat rails may be configured by a pair of upper seat rails.

[0038] In addition, in this embodiment, the accelerator position sensor is provided above the outlet tube, but a component other than the accelerator position sensor may be provided above or below the outlet tube at least one of the above and below.

[0039] The intake air temperature sensor installation structure of this embodiment is not limited to the above-mentioned off-road type saddle-ride vehicle, but may be adopted in other types of saddle-ride vehicles. Note that a saddle-ride vehicle is not limited to all vehicles in which the driver sits astride the seat, but also includes scooter-type vehicles in which the driver does not sit astride the seat.

[0040] As described above, the first aspect is an installation structure for an intake air temperature sensor (70) that detects the temperature of intake air to an engine (31), in which an air cleaner case (47) is installed behind the engine, an outlet tube (48) is connected to the front of the air cleaner case, a rear suspension (37) is installed in front of the air cleaner case, the outlet tube has a passage portion (50) that passes through one side of the rear suspension in the vehicle width direction and extends forward, and the intake air temperature sensor is installed on a side surface of the outlet tube on the other side in the vehicle width direction. According to this configuration, the side surface of the outlet tube on the other side in the vehicle width direction is positioned more inward in the vehicle width direction than the passage portion of the outlet tube that passes through one side of the rear suspension in the vehicle width direction. The intake air temperature sensor installed on the side surface of the other side in the vehicle width direction of the outlet tube is less likely to protrude outward in the vehicle width direction, and water droplets and mud are less likely to adhere to the sensor. In addition, since the intake air temperature sensor is directed to the side, ease of installation is ensured. Furthermore, the intake air temperature sensor can be installed in the narrow space on the other side of the outlet tube in the vehicle width direction, and the spaces above and below the outlet tube can be used for installing other components.

[0041] In the second aspect, in the first aspect, the intake air temperature sensor is located between the air cleaner case and the rear suspension in a side view. With this configuration, the intake air temperature sensor can be installed by utilizing the narrow space between the air cleaner case and the rear suspension.

[0042] In the third aspect, in the first and second aspects, a reservoir tank (39) is provided on the other side of the rear suspension in the vehicle width direction, the intake air temperature sensor is located between the air cleaner case and the reservoir tank in a top view, and the connector (71) on the tip side of the intake air temperature sensor is located inside the side surface of the air cleaner case and the reservoir tank on the other side in the vehicle width direction. With this configuration, the intake air temperature sensor can be installed by utilizing the narrow space between the air cleaner case and the reservoir tank, and the intake air temperature sensor is protected from impacts when the vehicle rolls over by the air cleaner case and the reservoir tank.

[0043] In a fourth aspect, in any one of the first to third aspects, the rear suspension is located in the center in the vehicle width direction in a top view, the passage is located on one side of the rear suspension in the vehicle width direction, and the intake air temperature sensor is located on the other side of the rear suspension in the vehicle width direction. According to this configuration, the spaces on both sides of the rear suspension are used for installing the passage and the intake air temperature sensor.

[0044] In a fifth aspect, in any one of the first to fourth aspects, the intake air temperature sensor is installed at the same height as the passage portion. With this configuration, the intake air temperature sensor is positioned high, so that water droplets and mud splashed up from the wheels are less likely to adhere to the intake air temperature sensor.

[0045] A sixth aspect is any one of the first to fifth aspects, in which the seat (23) is supported from below by a pair of upper seat rails (21), the pair of upper seat rails are supported from below by a pair of lower seat rails (22), the pair of upper seat rails are located more inward in the vehicle width direction than the pair of lower seat rails, and the intake air temperature sensor is covered from above by the upper seat rails and is located more inward in the vehicle width direction than the lower seat rails in a top view. With this configuration, even if the intake air temperature sensor is installed on a side surface of the outlet tube, the upper seat rails and the lower seat rails protect the intake air temperature sensor from impact when the vehicle rolls over.

[0046] Although the present embodiment has been described, other embodiments may be made by combining the above-described embodiments and modifications in whole or in part.

[0047] In addition, the technology of the present invention is not limited to the above examples, and may be modified, substituted, or altered in various ways without departing from the spirit of the technical idea. Furthermore, if the technical idea can be realized in a different way due to the progress of technology or a different technology derived therefrom, the invention may be implemented using that method. Therefore, the claims cover all embodiments that may be included within the scope of the technical idea. [Explanation of symbols]

[0048] 1: Saddle-type vehicle 21: Upper seat rail 22: Lower seat rail 23:Sheet 31: Engine 37: Rear suspension 39: Reservoir tank 47: Air cleaner case 48: Outlet tube 50:Aisle section 70: Intake air temperature sensor 71: Connector

Claims

1. An installation structure of an intake air temperature sensor for detecting the temperature of intake air into an engine, An air cleaner case is installed behind the engine, An outlet tube is connected to the front of the air cleaner case, A rear suspension is installed in front of the air cleaner case, the outlet tube has a passage portion that passes through one side of the rear suspension in a vehicle width direction and extends forward, an intake air temperature sensor installation structure, wherein the intake air temperature sensor is installed on the other side of the outlet tube in the vehicle width direction;

2. 2. The intake air temperature sensor installation structure according to claim 1, wherein the intake air temperature sensor is located between the air cleaner case and the rear suspension in a side view.

3. a reservoir tank is provided on the other side of the rear suspension in the vehicle width direction, 3. An intake air temperature sensor installation structure as described in claim 1 or claim 2, characterized in that the intake air temperature sensor is located between the air cleaner case and the reservoir tank when viewed from above, and a connector at the tip side of the intake air temperature sensor is located inside the side surface of the air cleaner case and the reservoir tank on the other side in the vehicle width direction.

4. 3. An intake air temperature sensor installation structure as described in claim 1 or claim 2, characterized in that, when viewed from above, the rear suspension is located in the center of the vehicle width direction, the passage portion is located on one side of the rear suspension in the vehicle width direction, and the intake air temperature sensor is located on the other side of the rear suspension in the vehicle width direction.

5. 3. The intake air temperature sensor installation structure according to claim 1, wherein the intake air temperature sensor is installed at the same height as the passage portion.

6. The seat is supported from below by a pair of upper seat rails, The pair of upper seat rails are supported from below by a pair of lower seat rails, the pair of upper seat rails are located inward in the vehicle width direction relative to the pair of lower seat rails, 3. The intake air temperature sensor installation structure according to claim 1, wherein the intake air temperature sensor is covered from above by the upper seat rail and is positioned more inward in the vehicle width direction than the lower seat rail in a top view.

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