JP7090963B1 - Motorcycle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a motorcycle for suppressing slip during cornering. A motorcycle 1 uses heat generated from an engine 18 to heat an outside air, and heat exchanger 2 to heat the outside air to a left shoulder portion 9a and a right shoulder portion of a tire. It is provided with a heat delivery tube 3 that sends out to the surface of 9b. .. [Selection diagram] Fig. 1

Description

The present invention relates to a motorcycle.

In a motorcycle for competition that runs on a circuit, when turning a corner at high speed, the motorcycle and thus the tires are tilted greatly toward the road surface side. At this time, in order to prevent slipping and falling, it is necessary to increase the grip force of the tire with respect to the traveling road surface, and the surface temperature of the tire has a great influence on the improvement of the grip force.

By the way, since the circuit goes around dozens of laps on the lap course, for example, on a counterclockwise course, there are many left corners. In that case, the contact time between the left side portion (left shoulder portion) of the tire and the road surface is increased, and the surface temperature of the left shoulder portion is improved due to the frictional force, and the grip force is also improved. On the other hand, the right shoulder portion on the opposite side not only has a shorter contact time with the road surface, but is also exposed to the wind accompanying high-speed movement, so that the surface temperature does not rise easily and the grip force is inferior to that of the left shoulder portion. For this reason, when switching from a long left corner ring to a right corner ring, the difference in grip force between the left and right shoulder portions is large, and slipping and falling are likely to occur.

In order to prevent this situation, for example, a method of checking the temperature of the tires on the left and right shoulder portions and giving a warning has been proposed (Patent Document 1). However, this method only warns the rider who operates the motorcycle, and the only way to prevent slipping is to adjust the tilt angle and speed of the tire with the rider's operation technique.

JP 2013-141974

In the operation of a motorcycle, it is an object to suppress slip during cornering.

The present invention provides the following inventions in order to solve the above problems.
In the present invention [1], heat is sent from a heat exchange means for warming the outside air to the surfaces of the left shoulder portion and the right shoulder portion of the tire by using the heat generated from the engine and the outside air heated by the heat exchange means. Includes motorcycles with delivery means.

According to such an invention, the warmed outside air can be sent independently to each of the left shoulder portion and the right shoulder portion while traveling, and the left shoulder portion and the right shoulder portion can be heated separately. .. Therefore, the difference in surface temperature between both shoulder portions can be reduced, the difference in cornering operability due to the difference in grip force between both shoulder portions can be reduced, and slip and tipping can be suppressed. Further, since the air sent to the shoulder portion is not exhaust gas but outside air, it is possible to prevent contamination of the tire surface.

In the present invention [2], the heat exchange means is attached to a muffler, and the heat exchange means warms the outside air by using the exhaust heat sent from the engine to the muffler. [1] Including the motorcycles described in.

According to such an invention, since the heat exchange means is attached to the muffler formed to be long in the front-rear direction, the degree of freedom in the arrangement (position in the front-rear direction) of the heat exchange means is increased, and the heat exchange means can be used. Easy to install.

In the present invention [3], the motorcycle according to [1], wherein the heat exchange means is attached to the engine, and the heat exchange means uses the heat of the engine surface to heat the outside air. include.

According to such an invention, since the heat from the engine, which is the hottest in the motorcycle, is directly used, the outside air having a higher temperature can be sent to the shoulder portion.

The present invention [4] includes any of [1] to [3], comprising a left side sensor for measuring the surface temperature of the left shoulder portion of the tire and a right side sensor for measuring the surface temperature of the right shoulder portion of the tire. Including the motorcycle described in paragraph 1.

According to such an invention, since the surface temperature of both shoulder portions can be measured, the outside air blown to the shoulder portions can be adjusted according to the surface temperature, and more appropriate temperature control is possible. Become.

The present invention [5] includes the motorcycle according to any one of [1] to [4], wherein the left side sensor and the right side sensor are located in front of the outlet of the outside air in the heat delivery means. ..

According to such an invention, it is possible to prevent the outside air blown to the shoulder portion from directly hitting the measurement point of the sensor in the tire, so that the temperature of the shoulder portion can be accurately measured.

According to the present invention [6], when the difference between the surface temperature measured by the left side sensor and the surface temperature measured by the right side sensor exceeds a threshold value, the outside air is sent to a shoulder portion having a low surface temperature. The motorcycle according to any one of [1] to [5], comprising the means.

According to such an invention, the temperature difference between the two shoulder portions can be kept within a predetermined range, and slip and tipping can be suppressed more reliably.

The motorcycle of the present invention can reduce the temperature difference between the left and right shoulder portions of the tire, and can suppress slip during cornering.

FIG. 1 shows a schematic view of a motorcycle according to a first embodiment of the present invention. 2 is a schematic view of a heat exchanger attached to a muffler in the motorcycle of FIG. 1, FIG. 2A is a side view, and FIG. 2B is a sectional view taken along the line AA of FIG. 2A. FIG. 3 shows a schematic layout of a rear wheel tire, a rear wheel fender, a temperature sensor, and a heat delivery tube in the motorcycle of FIG. FIG. 4 shows a schematic view of a motorcycle according to a second embodiment of the present invention. .. FIG. 5 shows a schematic layout of front wheel tires, front wheel fenders, and heat delivery pipes in the motorcycle of FIG. FIG. 6 shows a schematic view of a motorcycle according to a third embodiment of the present invention. FIG. 7 shows a schematic view of a heat exchanger attached to an engine in the motorcycle of FIG. FIG. 8 shows a schematic view of a motorcycle according to a fourth embodiment of the present invention.

<First Embodiment>
A motorcycle (hereinafter, abbreviated as a motorcycle) 1 according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 4. In the motorcycle 1 of the first embodiment, a heat exchanger 2 (an example of heat exchange means) is attached to the muffler 6, and a heat transfer tube 4 (an example of heat transfer means) for heating the rear wheel tire 8 is provided. Has been done. Specifically, the two-wheeled vehicle 1 is a two-wheeled vehicle for racing, and in addition to a known or conventional two-wheeled vehicle, a heat exchanger 2, a temperature sensor 3, a heat delivery tube 4, and a control unit 5 (an example of control means). ) Is further provided. In addition, in FIG. 1, in order to make it easy to see the heat exchanger 2, the engine 18, etc., the cowl 22 covering them is shown in a transparent state by a alternate long and short dash line.

The heat exchanger 2 is attached to the muffler 6. The heat exchanger 2 is formed in a hollow cylindrical shape that covers the periphery of the muffler 6. An intake port 11 for taking in outside air is formed at the front end of the heat exchanger 2, and the rear end communicates with the heat delivery pipe 4. That is, the heat exchanger 2 has a double pipe structure together with the muffler 6, and is configured so that the outside air from the front can pass through the inside of the heat exchanger 2 and the outside circumference of the muffler 6 while traveling. There is. As a result, the outside air taken in from the intake port 11 of the heat exchanger 2 is heated by the outer surface of the muffler 6 and then sent to the heat delivery pipe 4.

The heat delivery pipe 4 is attached so as to extend from the rear side of the heat exchanger 2 to the periphery of the rear wheel tire 8. The front end of the heat delivery pipe 4 communicates with the rear end of the heat exchanger 2, and the rear end is branched so that air can be blown to the left shoulder portion 9a and the right shoulder portion 9b of the rear wheel tire 8. Specifically, the heat delivery pipe 4 has a left air outlet 12 (an example of an outside air outlet) that opens toward the left shoulder portion 9a and a right air outlet 13 (outside air outlet 13) that opens toward the right shoulder portion 9b. An example of an exit) and an outside air outlet 14 that opens toward the side opposite to the vehicle body are formed. The heat delivery pipe 4 is provided with an opening / closing system (opening / closing valve, etc., not shown) that can open / close the left side air outlet 12, the right side air outlet 13, and the outside air outlet 14 by a command from the control unit 5 described later.

The temperature sensor 3 includes a left side sensor 15 that measures the surface temperature of the left shoulder portion 9a of the rear wheel tire 8 and a right side sensor 16 that measures the surface temperature of the right shoulder portion 9b of the rear wheel tire 8. The temperature sensor 3 is a non-contact type sensor and is fixed to the rear wheel fender 17. Specifically, the left side sensor 15 is arranged at a position facing the left shoulder portion 9a, and the right side sensor 16 is arranged at a position facing the right shoulder portion 18b. Further, each temperature sensor 3 is arranged on the front side of the left side blower port 12 and the right side blower port 13 in order to prevent the influence of the heat directly discharged from the heat delivery pipe 4.

The control unit 5 is attached to the central portion of the vehicle body. The control unit 5 is electrically connected to the temperature sensor 3 and the opening / closing system by wiring 19 (indicated by a broken line in FIG. 1) or wirelessly. The temperature information of the left shoulder portion 9a and the right shoulder portion 9b transmitted from the temperature sensor 3 is taken in, and the opening / closing system is operated according to the temperature difference between them. Specifically, when the temperature difference exceeds a predetermined threshold value (for example, 30 ° C.), the air outlet (left air outlet 12 or right air outlet 13) on the shoulder side of the tire on the low temperature side is opened, and other air is blown. Close the ports (left side air outlet 12 or right side air outlet 13 and out-of-vehicle air outlet 14). On the other hand, when the temperature difference is equal to or less than a predetermined threshold value, the outside air outlet 14 is opened, and the left air outlet 12 and the right air outlet 13 are closed.

In such a motorcycle 1, the high heat of the exhaust gas burned by the engine 18 and sent to the muffler 6 can be used to warm the shoulder portion on the side not in contact with the road surface, so that the grip force is improved. It can be prevented from slipping or falling. Specifically, the temperature around the engine reaches several hundred degrees. Further, the temperature of the running tire is, for example, about 100 ° C. for the shoulder portion on the side with many cornering, and about 50 ° C. for the shoulder portion on the side with less cornering. Therefore, the heat around the engine heats the shoulder portion on the low temperature side, and the temperature difference between the two shoulder portions can be reduced. Further, since the heat of the exhaust gas is reused, it is not necessary to newly mount a heating device or the like, and it is possible to suppress an increase in the number of mounted parts. Further, instead of directly using the exhaust gas, clean air other than around the engine is heated by the heat exchanger 2 and blown to the rear wheel tire 8, so that the rear wheel tire 8 can be prevented from being contaminated. ..

It is also possible to input the expected tire temperature information of each of the shoulder portions 9a and 9b simulated from the circuit course and its road surface condition into the control unit 5, and operate the opening / closing system based on the input information. can. At this time, the temperature information obtained by the temperature sensor 3 is used as supplementary information or correction information. For example, when a large error occurs between the predicted input information and the temperature information of the temperature sensor 3 which is the measured value due to a fall or an accident, the temperature information of the temperature sensor 3 is prioritized and the opening / closing system is operated. Can be activated.

<Second Embodiment>
The motorcycle 1 of the second embodiment of the present invention will be described with reference to FIGS. 4 to 5. The same configuration as in the first embodiment will be omitted. In the motorcycle 1 of the second embodiment, the heat exchanger 2 is attached to the muffler 6, and the heat delivery pipe 4 for heating the front tire 7 is provided. Specifically, the motorcycle 1 further includes a heat exchanger 2, a temperature sensor 3, a heat delivery tube 4, and a control unit 5.

The heat delivery pipe 4 of the second embodiment is attached so as to extend from the front side of the heat exchanger 2 to the periphery of the front wheel tire 7. One end of the heat delivery pipe 4 communicates with the discharge port of the heat exchanger 2, and the other end is branched so that air can be blown to the left shoulder portion 9b and the right shoulder portion 9b of the front wheel tire 7. Specifically, the heat delivery pipe 4 has a left air outlet 12 that opens toward the left shoulder portion 9b, a right air outlet 13 that opens toward the right shoulder portion 9b, and the outside (left-right direction) of the vehicle body. An out-of-vehicle air outlet 14 that opens toward the vehicle is formed. A part of the heat delivery pipe 4 is formed of a flexible member 21 so that the handle of the front wheel tire 7 can be operated.

The temperature sensor 3 is fixed to the front wheel fender 20. Specifically, the left side sensor 15 is arranged at a position facing the left shoulder part 9a in order to measure the surface temperature of the left shoulder part 9a of the front wheel tire 7. The right side sensor 16 is arranged at a position facing the right shoulder part 9b in order to measure the surface temperature of the right shoulder part 9b of the front wheel tire 7.

With respect to such a second embodiment, the same effect as that of the first embodiment is exerted on the front tire 7.

<Third Embodiment>
The motorcycle 1 of the third embodiment of the present invention will be described with reference to FIGS. 6 to 7. The same configuration as in the first embodiment will be omitted. In the motorcycle 1 of the third embodiment, the heat exchanger 2 is attached to the engine 18, and the heat delivery pipe 4 for heating the rear wheel tire 8 is provided. Specifically, the motorcycle 1 further includes a heat exchanger 2, a temperature sensor 3, a heat delivery tube 4, and a control unit 5.

The heat exchanger 2 of the third embodiment is attached to the engine 18. The heat exchanger 2 is provided with a metal tube 10 (heat conductive reciprocating pipe) arranged on the side surface of the engine 18 so as to return and reciprocate in the front-rear direction.

In the metal pipe 10, an intake port 11 for taking in the running outside air is formed in the front, and an discharge port for discharging the outside air is formed in the rear. The outside air taken in from the intake port 11 is warmed by the metal pipe 10 heated by the heat of the engine 18 when passing through the metal pipe 10, and is blown to the heat delivery pipe 4.

Such a third embodiment also has the same effect as that of the first embodiment.

<Fourth Embodiment>
The two-wheeled vehicle 1 of the fourth embodiment of the present invention will be described with reference to FIG. The same configuration as in the first embodiment will be omitted. In the motorcycle 1 of the fourth embodiment, the heat exchanger 2 is attached to the engine 18, and the heat delivery pipe 4 for heating the front tire 7 is provided. Specifically, the motorcycle 1 further includes a heat exchanger 2, a temperature sensor 3, a heat delivery tube 4, and a control unit 5.

The heat exchanger 2 of the fourth embodiment is the same as the heat exchanger 2 of the third embodiment, and the temperature sensor 3 and the heat delivery tube 4 of the fourth embodiment are the temperature sensor 3 and the heat of the second embodiment. It is the same as the delivery tube 4.

With respect to such a fourth embodiment, the same effect as that of the first embodiment is exerted on the front tire 7.

<Other embodiments>
In the first embodiment and the third embodiment, heat from the muffler 6 is sent only to the shoulder portion 9 of the rear wheel tire 8, and in the second embodiment and the fourth embodiment, the front wheel tire 7 Although the heat from the muffler 6 is sent only to the shoulder portion, these may be combined. That is, the heat from the muffler 6 may be sent to both the shoulder portion 9 of the front wheel tire 7 and the shoulder portion 9 of the rear wheel tire 8. At this time, the heat exchanger 2 may be provided with a heat exchanger 2 for blowing air to the front wheel tires 7 and a heat exchanger 2 for blowing air to the rear wheels separately, or one heat exchange. The vessel 2 is attached and may be used for both front wheels and rear wheels.

1 Motorcycle 2 Heat exchanger 3 Temperature sensor 4 Heat delivery pipe 5 Control unit 6 Muffler 7 Front wheel tire 8 Rear wheel tire 9a Left shoulder part 9b Right shoulder part 10 Metal pipe 11 Intake port 12 Left side air outlet 13 Right side air outlet 14 Outside the vehicle Blower 15 Left side sensor 16 Right side sensor 17 Rear wheel fender 18 Engine 19 Wired 20 Front wheel fender 21 Flexible member 22 Cowl

Claims (4)

A heat exchange means that uses the heat generated by the engine to heat the outside air,
A heat delivery means that sends out the outside air warmed by the heat exchange means to the surfaces of the left shoulder portion and the right shoulder portion of the tire, and
The left side sensor that measures the surface temperature of the left shoulder part of the tire, and
A right-hand sensor that measures the surface temperature of the right shoulder of the tire,
A control means for sending outside air to a shoulder portion having a low surface temperature when the difference between the surface temperature measured by the left side sensor and the surface temperature measured by the right side sensor exceeds a threshold value.
A motorcycle characterized by being equipped with. The heat exchange means is attached to the muffler and
The motorcycle according to claim 1, wherein the heat exchange means uses exhaust heat sent from the engine to the muffler to heat the outside air. The heat exchange means is attached to the engine and
The motorcycle according to claim 1, wherein the heat exchange means uses the heat of the engine surface to heat the outside air. The motorcycle according to any one of claims 1 to 3 , wherein the left side sensor and the right side sensor are located on the front side of the outlet of the outside air in the heat delivery means.

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