JP3680820B2 - Scooter type vehicle - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a scooter type vehicle, and more particularly to a scooter type vehicle equipped with a fuel injection type intake device.
[0002]
[Prior art]
As a means for supplying an air-fuel mixture to an engine, there is one using a carburetor. The carburetor is trying to obtain the best setting by combining several jets in order to meet the characteristics of the engine and the driving demand, but it can respond flexibly to changes in driving conditions and surrounding environment etc. It was impossible.
[0003]
Therefore, in recent years, fuel that injects the most appropriate required fuel amount directly into the intake passage of the engine by sensing the throttle opening, engine speed, engine temperature, outside air temperature, atmospheric pressure, etc. with a sensor and processing that information with a computer. The number of engines with injection-type intake devices has increased.
[0004]
The fuel injection type intake system has good combustion efficiency and improved output, but also has the advantage that the fuel consumption is small because only the minimum required amount is injected, and the amount of harmful substances in the exhaust gas is small. It is becoming more commonly used in automobiles.
[0005]
[Problems to be solved by the invention]
However, in the case of a small vehicle such as a scooter type vehicle, since it has many parts in a limited narrow space, when a fuel injection type intake device is newly provided, a controller or fuel pump with a built-in computer Sufficient consideration is required for the arrangement of various sensors.
[0006]
In particular, since many scooter type vehicles are exposed to the outside, the arrangement of controllers having weak points against heat, moisture, dust, etc. is particularly important when precise control is desired.
[0007]
On the other hand, many scooter type vehicles are equipped with a unit swing type engine that swings up and down with the rear wheels as drive wheels, and the fuel injection type intake device is often provided integrally with the swing on the upper surface of the unit swing type engine. It has been. Therefore, the position of the bottom surface of the storage box disposed above the unit swing type engine is restricted.
[0008]
If the stroke amount of the rear cushion unit that elastically supports the unit swing type engine is reduced, the capacity of the storage box can be increased to some extent, but the ride comfort is impaired.
[0009]
The present invention has been made in consideration of the above-described circumstances, and an object of the present invention is to provide a scooter type vehicle in which a controller is arranged so that a fuel injection type intake device can be accurately controlled.
[0010]
Another object of the present invention is to provide a scooter type vehicle that can sufficiently secure the capacity of the storage box without impairing the ride comfort.
[0011]
[Means for Solving the Problems]
In order to solve the above-described problem, a scooter type vehicle according to the present invention includes an air cleaner and a throttle body that constitute an intake device, fuel injection means, and a crank that extends in the width direction of the vehicle body. A water-cooled multi-cylinder engine body that includes a cylinder assembly that is tilted substantially horizontally to the front side of a crankcase having a shaft and whose central axis is arranged along the traveling direction of the vehicle, and is connected to the engine body The intake pipe, the storage box that can store the helmet disposed below the driving seat, the fuel tank, the rear cushion unit, and the vehicle body cover that covers the periphery of the vehicle body frame, the head pipe that supports the front wheels And a rear floor with a step floor at the bottom. In the scooter type vehicle in which the gshield is disposed, the engine body is disposed below the operation seat, the radiator for cooling the engine body is disposed at a front portion of a down tube extending rearward and downward from the head pipe, and A fuel tank is arranged at the lower part of the step floor, and the bottom shape of the storage box is formed in a stepped shape in front and rear in a vehicle side view so that two helmets can be stored in the storage box in the front and rear, Between the intake pipe and the air cleaner Suction pipe Is substantially parallel to the ground, and an injector as the fuel injection means is mounted on the intake pipe between the throttle body and the cylinder head.
[0012]
In order to solve the above-described problem, as described in claim 2, Said The fuel tank is equipped with a fuel pump, and this fuel pump Said The fuel hose is connected to the injector, and this fuel hose Said From below the step floor Said It is extended in the rear frame cover which comprises a vehicle body cover.
[0013]
Furthermore, in order to solve the above-described problem, as described in claim 3, an air cleaner and a throttle body constituting an intake device, fuel injection means, and a crankcase including a crankshaft extending in the width direction of the vehicle body are provided. A water-cooled multi-cylinder engine body having a cylinder assembly that is tilted forward in a substantially horizontal direction and whose central axis is disposed along the traveling direction of the vehicle, a fuel tank, the engine body, and an operation seat. While a storage box that can store a helmet in between is provided, a rear leg shield that has a step floor at the bottom with a large entry into the bottom between the head pipe that supports the front wheel and the above driving seat is arranged. In the scooter type vehicle, the engine is disposed at a front portion of a down tube extending rearward and downward from the head pipe. A radiator for cooling the main body is disposed, the fuel tank is disposed at the lower part of the step floor, the air cleaner is formed in a substantially L shape in plan view, and the front portion of the air cleaner extends to above the crankcase of the engine body. And an intake pipe that connects the throttle body and air cleaner to the cylinder head of the engine body along the traveling direction of the vehicle. Plan view They are arranged in a substantially straight line.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention Scooter type vehicle according to The embodiment will be described with reference to the drawings.
[0015]
FIG. The first reference example of a scooter type vehicle It is a left view shown. FIG. 2 is a left side view showing the internal structure of the scooter type vehicle. FIG. 3 is a schematic plan view of the scooter type vehicle shown in FIGS. 1 and 2.
[0016]
As shown in FIGS. 1 to 3, the scooter type vehicle 1 </ b> A has a body frame 2. The vehicle body frame 2 includes a head pipe 3 at the foremost part, extends from the rear lower part of the head pipe 3 to the rear lower side, and extends substantially horizontally from the middle to the rear, and the down tube 4 A pair of left and right rear frames 5 extending rearward and upward from the rear end side of the tube 4 is configured.
[0017]
A storage box 7A capable of storing a helmet 6 and the like is provided above the rear frame 5. An operation seat 8 that also serves as a lid of the storage box 7A is installed above the storage box 7A so as to be openable and closable, and a fuel tank 9A is disposed behind the storage box 7A.
[0018]
A unit swing type engine 10 is disposed substantially at the lower center of the rear frame 5. A pair of left and right engine suspension bosses 11 a arranged side by side in the width direction of the vehicle are provided on the upper surface of the unit swing type engine 10, and the pair of left and right engine suspension bosses 11 a provided at a substantially central lower portion of the rear frame 5. The unit swing type engine 10 is swingably supported by being pivotally attached to the engine suspension bracket 12a. 2, the engine suspension boss 11b is provided on the lower surface of the unit swing type engine 10, and the unit swing type engine 10 is attached to the engine suspension bracket 12b provided at the lower rear end of the down tube 4. You may pivot.
[0019]
The unit swing type engine 10 includes an engine body 13 and one side of the engine body 13. Reference example Is integrally provided with a conductive case 14 extending rearward from the left side in the traveling direction of the vehicle. The conductive case 14 also serves as a swing arm and is elastically supported by the rear frame 5 by the rear cushion unit 15. A rear wheel 16 as a driving wheel is pivotally supported at the rear end of the conduction case 14.
[0020]
The head pipe 3 is provided with a front fork 18 and a handle bar 19 that rotatably support the front wheel 17. Grips 20a and 20b are provided at both ends of the handlebar 19, and the right grip 20a in the traveling direction of the vehicle functions as a throttle grip. Brake levers 21a and 21b are provided on the front sides of both grips 20a and 20b, and are connected to brake devices 22 and 23 provided on the front wheel 17 and the rear wheel 16 via brake wires 24 and 25, respectively. Then, the front wheel 17 is steered by the handle bar 19 so as to be rotatable left and right.
[0021]
On the other hand, the vehicle body frame 2 is covered by a vehicle body cover 26, and the vehicle body cover 26 constitutes the appearance of the vehicle. The vehicle body cover 26 is configured by combining a plurality of cover elements. Specifically, the cover element includes, for example, a front leg shield 27, a rear leg shield 28, a lower leg shield 29, a rear frame cover 30, and the like.
[0022]
A rear leg shield 28 having a step floor 31 on which the rider puts both feet is disposed at the bottom between the driving seat 8 and the head pipe 3. The rear leg shield 28 is disposed so as to cover the horizontal portion of the down tube 4 from above, and is fixed to the down tube 4. A lower leg shield 29 is arranged below the rear leg shield 28 so as to cover the horizontal portion of the down tube 4 from below. A lower floor storage chamber 32 is provided in a space between the rear leg shield 28 and the lower leg shield 29, and the inside thereof can be accessed by an openable / closable lid 33 provided on the step floor 31. . Further, a front leg shield 27 that rises upward from the front portion of the rear leg shield 28 is disposed so as to cover the front and rear of the head pipe 3, and is fixed to the rising portion of the down tube 4. A headlight 34 is provided at the front lower part.
[0023]
On the other hand, around the rear frame 5, for example, a rear frame cover 30 formed separately from the left and right or integrally is provided so as to surround the left and right of the rear frame 5. A combination lamp 35 is provided at the rear end of the rear frame cover 30. A rear carrier 36 is provided above the combination lamp 35. These cover elements are molded from a plastic resin material such as PP resin or ABS resin.
[0024]
this First reference example The unit swing type engine 10 of the scooter type vehicle 1 shown in FIG. 1 includes a general forced air-cooled four-cycle single-cylinder engine body 13. The engine body 13 includes a crankcase 37 having a crankshaft (not shown) that extends mainly in the width direction of the vehicle body, and leans forward substantially horizontally toward the front side of the crankcase 37. And a cylinder assembly 39 arranged along the direction.
[0025]
The cylinder assembly 39 includes a cylinder block 40 disposed on the front side of the crankcase 37 and a cylinder head 41 disposed on the front side of the cylinder block 40. In the cylinder block 40, a piston (not shown) is slidably housed, and a valve operating device (not shown) is housed in the cylinder head 41.
[0026]
The engine body 13 may be a two-cycle engine, a multi-cylinder engine, or a water-cooled engine cooling system. In the case of the water-cooled type, it is desirable that the radiator be disposed at a position where the traveling wind can easily hit, such as the front of the head pipe 3 (reference numeral 42a) and the front portion of the down tube 4 below the head pipe 3 (reference numeral 42b).
[0027]
The unit swing type engine 10 is provided with a normal type exhaust device 43. The exhaust device 43 has a base end connected to an exhaust port 44 on the lower side in the cylinder head 41, and a lower portion on the opposite side to the conduction case 14 of the unit swing type engine 10, Reference example The exhaust pipe 45 extends rearward in the lower right side in the traveling direction of the vehicle, and a muffler 46 connected to the downstream end of the exhaust pipe 45 and extending rearward and obliquely upward.
[0028]
On the other hand, the unit swing type engine 10 is provided with a fuel injection type intake device 47. The intake device 47 injects fuel into an air cleaner 48A that sucks and cleans outside air, a throttle body 49 that adjusts the flow rate of the sucked outside air (hereinafter referred to as intake air), and an intake passage 49a of the throttle body 49. An injector 50 as fuel injection means, and a fuel pump 51 that pumps the fuel in the fuel tank 9A to the injector 50 are provided as main components.
[0029]
The flow rate of the intake air is adjusted by opening / closing a throttle valve 52 (described later) provided in the intake passage 49a, and the opening / closing operation is performed by the throttle grip 20a connected via a throttle cable 53 extending from the throttle body 49. .
[0030]
Further, the air cleaner 48 </ b> A and the throttle body 49 are connected by a suction pipe 54, and the throttle body 49 and the intake port 55 inside the cylinder head 41 are connected by an intake pipe 56. The suction pipe 54 and the intake pipe 56 constitute an intake path that connects the intake port 55 and the air cleaner 48. The fuel tank 9 </ b> A and the fuel pump 51 and the fuel pump 51 and the injector 50 are connected by a fuel hose 57.
[0031]
The amount and timing of fuel injection by the injector 50 are electronically controlled by the controller 58. Hereinafter, the configuration of the fuel injection system will be described with reference to FIG.
[0032]
As shown in FIG. 4, this fuel injection system includes a sensor unit, a control unit, and an injection unit. The sensor unit is provided to obtain data necessary for determining and correcting the basic injection amount of fuel, and an intake pressure sensor that detects the intake pressure in the intake passage 49a of the throttle body 49 in order to determine the injection amount. 59, a signal generator 60 (rotational speed sensor) for detecting the rotational speed of the crankshaft, a cam position sensor 62 for detecting the position (bubble timing) of the camshaft 61 in the cylinder head 41 (in the case of a two-cycle engine) Unnecessary), and a throttle position sensor 63 for detecting the opening of the throttle valve 52 in the intake passage 49a.
[0033]
Further, in order to correct the injection amount, an atmospheric pressure sensor 64 that detects atmospheric pressure, an intake air temperature sensor 65 that is attached to the air cleaner 48A and detects the temperature of intake air, and an ignition plug mounting seat when the engine body 13 is an air-cooled type A plug seat temperature sensor 66 for detecting the temperature of the water, a water temperature sensor 67 for detecting the temperature of the cooling water attached to the radiator 42 when the engine body 13 is of a water cooling type, and the like are provided. The data obtained by the sensor unit is sent to the controller 58 as a control unit, and the amount and timing of fuel injection are determined.
[0034]
On the other hand, the fuel injection amount and timing data determined by the controller 58 are sent to the injection unit to control each device. The injection unit includes the fuel pump 51 and the injector 50 described above. A fuel filter 68 that removes foreign matters in the fuel is provided upstream of the fuel pump 51. In addition, this First reference example 4 shows an example in which the fuel pump 51 and the fuel filter 68 are arranged outside the fuel tank 9A, these devices may be built in the fuel tank 9A.
[0035]
Further, of the fuel pressure-fed to the injector 50 by the fuel pump 51, the surplus is returned to the fuel tank 9A by the pressure regulator 69. As auxiliary devices for controlling these injection units, for example, a fuel cut sensor 70, a fuel pump relay 71, and the like are provided and connected to the controller 58.
[0036]
A battery 72 is connected to the controller 58 to supply power, and the controller 58 is also connected to the combination meter 73 to display a remaining amount of fuel, a warning related to the fuel injection system, and the like on the meter panel 73a. .
[0037]
Next, the arrangement of the intake device 47 will be described. As shown in FIGS. 2 and 3, the air cleaner 48 </ b> A constituting the intake device 47 is disposed on the conduction case 14 of the unit swing type engine 10, and a throttle body 49 provided with an injector 50 on the cylinder block 40 obliquely forward. Is placed. The air cleaner 48 </ b> A, the throttle body 49, and the suction pipe 54 and the intake pipe 56 that connect them are integrated and fixed to the upper surface of the unit swing type engine 10 integrally with the swing.
[0038]
A fuel pump 51 is disposed above the suction pipe 54 and is fixed to the rear frame 5, and a flexible fuel hose 57 extends from the fuel pump 51 toward the fuel tank 9 </ b> A and the injector 50. The fuel hose 57 is fixed to the bottom surface of the storage box 7A in the vicinity of the injector 50 by, for example, a clamp 74, and prevents the fuel hose 57 from coming off the injector 50 when the injector 50 swings together with the unit swing type engine 10.
[0039]
On the other hand, the controller 58 and the battery 72 are juxtaposed adjacent to the fuel tank 9 on the side of the fuel tank 9A provided behind the storage box 7A. The side of the fuel tank 9A behind the storage box 7A is separated from the unit swing type engine 10, and the periphery thereof is surrounded by the rear frame cover 30, so if the controller 58 is arranged in this place, the unit swing is made to the controller 58. The heat generated by the mold engine 10 is difficult to be transmitted, and it is suitable for installation of the controller 58 because it is highly waterproof and dustproof. Even if the unit swing type engine 10 includes a water-cooled engine main body, since it is a place away from the radiators 42a and 42b, the influence of the exhaust heat of the radiator on the controller 58 is small.
[0040]
FIG. 5 is an enlarged left side view of the fuel tank 9A, and FIG. 6 is an enlarged plan view of the fuel tank 9A. As shown in FIGS. 5 and 6, for example, a left side surface of the fuel tank 9 </ b> A is provided with a step portion 9 a to form an installation space for the controller 58 and the battery 72. In addition, on the installation space, a fixing protrusion 75 is provided which protrudes according to the bottom shape of the controller 58 and the battery 72, and the controller 58 and the battery 72 are positioned and fixed.
[0041]
By arranging the controller 58 and the battery 72 in parallel, the wiring 76 between the two 58 and 72 can be shortened. A control cable 77 extends from the controller 58 toward the injector 50. As another place that satisfies the conditions of the arrangement of the controller 58, which is difficult to transmit heat from the unit swing type engine 10 and the radiators 42a and 42b and is highly waterproof and dustproof, for example, between the rear leg shield 28 and the lower leg shield 29. An example of the controller 78 disposed in the lower floor storage chamber 32 is shown by a two-dot chain line in FIGS. 2 and 3.
[0042]
By the way, the storage box 7A disposed above the unit swing type engine 10 is required to have a large storage capacity. On the other hand, an intake device 47 is arranged between the unit swing type engine 10 and the storage box 7A, and these swing up and down, so that the bottom of the storage box 7A is in a state where the rear cushion unit 15 is most compressed. The unit swing type engine 10 and the intake device 47 are formed in a shape that does not contact either.
[0043]
Specifically, a line connecting two points of the highest position of the upper profile 79 of the unit swing type engine 10 and the intake device 47 in a state where the rear cushion unit 15 is most compressed, in this embodiment, the cylinder head 41. The bottom surface of the storage box 7A is slanted forward and downward so as to be substantially parallel to the line XX connecting the upper part and the upper part of the throttle body 49 or the line XX'-X 'connecting the upper part of the cylinder head 41 and the upper part of the air cleaner 48. It is formed.
[0044]
7 and 8 show a scooter type vehicle 1B to which the present invention is applied. Second reference example FIG. 7 is a left side view showing the internal structure of the scooter type vehicle 1B, and FIG. 8 is a schematic plan view of the scooter type vehicle 1B shown in FIG. In addition, First reference example The same components as those of the scooter type vehicle 1A shown in FIG.
[0045]
As shown in FIGS. 7 and 8, the scooter type vehicle 1B is First reference example The difference from the scooter type vehicle 1A shown in FIG. Second reference example The storage box 7B of the scooter type vehicle 1B shown in FIG. 2 is provided with a helmet take-out space 80 at the rear part and the rear lower part. When the user takes out the helmet 6, the hand 81 is inserted into the helmet take-out space 80 to Easy removal. The shape of the storage box 7B can also be applied to a vehicle using a conventional carburetor (not shown).
[0046]
Also, First reference example In other places where the heat from the unit swing type engine 10 and the radiators 42a and 42b is difficult to be transmitted and the controller 58 has a high waterproof and dustproof condition, for example, between the rear leg shield 28 and the lower leg shield 29. Although the lower floor storage room 32 is shown, as a more possible place, this Second reference example In FIG. 2, an example of the controller 82 arranged in the space at the rear of the helmet 6 in the storage box 7B is indicated by a two-dot chain line.
[0047]
9 and 10 Is a third reference example of the scooter type vehicle 1C FIG. 9 is a left side view showing the internal structure of the scooter type vehicle 1C, and FIG. 10 is a schematic plan view of the scooter type vehicle 1C shown in FIG. In addition, First reference example The same components as those of the scooter type vehicle 1A shown in FIG.
[0048]
As shown in FIGS. 9 and 10, the scooter type vehicle 1C is First reference example The difference from the scooter type vehicle 1A shown in FIG. Third reference example The air cleaner 48C of the scooter type vehicle 1C shown in FIG. Therefore, the arrangement of the throttle body 49 is also First reference example It is on the opposite side (right side) from that shown in.
[0049]
11 and 12 Is a fourth reference example of the scooter type vehicle 1D FIG. 11 is a left side view showing the internal structure of the scooter type vehicle 1D, and FIG. 12 is a schematic plan view of the scooter type vehicle 1D shown in FIG. The first reference example The same components as those of the scooter type vehicle 1A shown in FIG.
[0050]
As shown in FIG. 11 and FIG. 12, this scooter type vehicle 1D has a basic structure. First reference example The scooter type vehicle 1A shown in FIG.
[0051]
First, a part of the bottom surface of the storage box 7D is extended in a space formed between the engine suspension boss 11a on the upper surface of the unit swing type engine 10 and the throttle body 49 disposed in front of the engine suspension boss 11D. A portion 83 is formed. By using the deepest portion 83, a long article can be stored. The highest portion of the injector 50 attached to the throttle body 49 is disposed above the deepest portion 83. The fuel hose 57 extending from the fuel pump 51 to the injector 50 and the control cable 77 extending from the controller 58 to the injector 50 are fixed near the deepest portion 83 of the storage box 7D by, for example, a clamp 74.
[0052]
An air cleaner 48 </ b> D is disposed in a space formed in front of the conduction case 14 on the left side surface of the cylinder assembly 39. A suction pipe 54 extends from the air cleaner 48D in a direction orthogonal to the traveling direction of the vehicle in plan view, and a throttle body 49 and an intake pipe 56 are connected substantially linearly to the downstream side.
[0053]
Thus, by arranging the air cleaner 48D, the suction pipe 54, the throttle body 49, and the intake pipe 56 substantially linearly in a direction orthogonal to the traveling direction of the vehicle, the air resistance is reduced and the intake efficiency is improved. It leads to up.
[0054]
The throttle body 49 has a throttle cable 53 connected to the front side of the vehicle and a fuel hose 57 and a control cable 77 connected to the rear side. By connecting hoses and cables in this way, excessive bending is eliminated, durability is improved, and operability of the throttle cable 53 is also improved.
[0055]
In addition, Fourth reference example mentioned above In For scooter type vehicles 4-cycle engine The Although the applied example is shown, when the engine body 13 is a two-cycle engine, the intake pipe 84 extends in the direction of the crankcase 37 and is connected as shown by a two-dot chain line in FIG. Further, the suspension position of the unit swing type engine 10 only needs to be on the upper side. Further, the shape of the storage box 7D capable of storing a long object can be applied to a vehicle using a conventional carburetor (not shown).
[0056]
13 and 14 Is a fifth reference example of the scooter type vehicle 1E FIG. 13 is a left side view showing the internal structure of the scooter type vehicle 1E, and FIG. 14 is a schematic plan view of the scooter type vehicle 1E shown in FIG. In addition, Fourth reference example The same components as those of the scooter type vehicle 1D shown in FIG.
[0057]
As shown in FIGS. 13 and 14, the scooter type vehicle 1E Fifth reference example 1 differs from the scooter type vehicle 1D shown in FIG. 1 in the arrangement shape of the intake device 47. The fuel injection direction axis YY of the injector 50 is an acute angle (approximately 90) between the central axis ZZ of the cylinder assembly 39 and the front side of the vehicle. The suction pipe 54 is largely bent so as to intersect within (°), and the intake pipe 56 is also bent from the front side of the cylinder head 41 toward the intake port 55. When the engine body 13 is a two-cycle engine, the intake pipe 84 extends to the crankcase 37 and is bent as shown by a two-dot chain line.
[0058]
By arranging the injector 50 such that its fuel injection direction axis YY intersects the central axis ZZ of the cylinder assembly 39 at an acute angle on the front side of the vehicle, the fuel injected from the injector 50 is curved in the intake port 55. Is directed in a direction in which the flow rate of the mixed gas is large and is injected linearly by the combustion chamber. As a result, an intake downdraft effect is also obtained, and intake efficiency, charging efficiency, and combustion efficiency are improved, leading to increased output.
[0059]
The air cleaner 85 may be disposed above the conduction case 14 as indicated by a two-dot chain line. Further, when the air cleaner 85 is disposed above the conduction case 14, the suspension position of the unit swing type engine 10 may be either up or down.
[0060]
15 and 16 Is a sixth reference example of the scooter type vehicle 1F FIG. 15 is a left side view showing the internal structure of the scooter type vehicle 1F, and FIG. 16 is a schematic plan view of the scooter type vehicle 1F shown in FIG. In addition, Fourth reference example The same components as those of the scooter type vehicle 1D shown in FIG.
[0061]
As shown in FIGS. 15 and 16, the scooter type vehicle 1F is Fourth reference example The difference from the scooter type vehicle 1D shown in FIG. 6 is that a second air cleaner 86F is provided in an independent space where the lower floor storage chamber 32 is originally provided in the lower part of the step floor 31 in consideration of a case where the capacity of the air cleaner 48D is insufficient. It is a thing. The air cleaner 48F (first air cleaner) and the second air cleaner 86F provided from the beginning are connected by a connecting pipe 87. The first air cleaner 48F swings up and down integrally with the unit swing type engine 10, and Since the two air cleaner 86F is fixed to the vehicle body side, the connecting pipe 87 is formed of a flexible material or a bellows structure. By providing the second air cleaner 86F, the capacity of the entire air cleaner 48F can be easily adjusted, and if the capacity increases, the intake noise decreases and the noise decreases.
[0062]
Further, as an example of the arrangement of the radiator when the engine main body 13 is a water-cooled type, an example in which the radiator 42c is arranged in front of the storage box 7 below the operation seat 8 is shown. Further, by arranging the radiator 42c at this position, when the exhaust air from the fan 88 of the radiator 42c passes over the throttle body 49 using the bottom surface of the storage box 7F as a guide, the front wheel 17 or the rear wheel 16 jumps up. As a result, sand, mud, dust, and the like flying around the throttle body 49 are blown off, so that these foreign substances can be prevented from adhering to the throttle body 49 and the injector 50, and durability and reliability are improved.
[0063]
On the other hand, as another place that satisfies the conditions of the arrangement of the controller 58 that is difficult to transmit heat from the unit swing type engine 10 and the radiators 42b and 42c and has high waterproof and dustproof properties, for example, in the front leg shield 27, FIG. An example of the controller 89 and the battery 90 arranged in the front leg shield 27 is indicated by a two-dot chain line.
[0064]
When the controller 89 and the battery 90 are disposed in the front leg shield 27, it is desirable to dispose the heavy battery 90 on the lower side and fix them to the head pipe 3, for example. If the controller 89 and the battery 90 are installed adjacent to each other, the wiring 76 between the two 89 and 90 can be shortened.
[0065]
17 and 18 Is the seventh reference example of the scooter type vehicle 1G FIG. 17 is a left side view showing the internal structure of the scooter type vehicle 1G, and FIG. 18 is a schematic plan view of the scooter type vehicle 1G shown in FIG. In addition, Fourth reference example The same components as those of the scooter type vehicle 1D shown in FIG.
[0066]
As shown in FIGS. 17 and 18, the scooter type vehicle 1G Fourth reference example The difference from the scooter type vehicle 1D shown in FIG. 4 is that a second air cleaner 86G is provided above the conduction case 14 in consideration of a case where the capacity of the air cleaner 48G (first air cleaner) provided from the beginning is insufficient. It is. Furthermore, both the air cleaners 48G and 86G may be connected by a connecting pipe 87, or both the air cleaners 48G and 86G may be integrally formed. By providing the second air cleaner 86G, the capacity of the entire air cleaner 48G can be easily adjusted, and if the capacity is increased, the intake sound is lowered and the noise is lowered.
[0067]
Further, the bottom of the storage box 7G has a stepped front-lowering shape so that the front lower portion (jaw portion) or the rear lower portion of the helmet 6 can be fitted into the deepest portion 83 thereof, whereby the helmet take-out space 80 is provided at the rear portion of the storage box 7G. When the user takes out the helmet 6, the user can easily take out the helmet 6 by inserting a hand 81 into the helmet taking-out space 80. The shape of the storage box 7G can also be applied to a vehicle using a conventional carburetor (not shown).
[0068]
In addition, Reference example Needless to say, can be applied to a two-stroke engine or a water-swing engine cooling unit swing type engine. In the case of a two-cycle engine, the intake pipe 84 extends in the direction of the crankcase 37 and is connected as shown by a two-dot chain line in FIG. In the case of the water-cooled type, it is desirable that the radiator is disposed at a position where the traveling wind can easily hit, such as the front of the head pipe 3 (reference numeral 42a) and the front part of the down tube 4 below the head pipe 3 (reference numeral 42b). Further, the suspension position of the unit swing type engine 10 may be either up or down.
[0069]
19 and 20 Is the eighth reference example of scooter type vehicle 1H FIG. 19 is a left side view showing the internal structure of the scooter type vehicle 1H, and FIG. 20 is a schematic plan view of the scooter type vehicle 1H shown in FIG. This scooter type vehicle 1H is basically The fifth reference example Because it has the same concept as the scooter type vehicle 1E shown in FIG. In the fifth reference example The same components as those of the illustrated scooter type vehicle 1E are denoted by the same reference numerals, and description thereof will be omitted as appropriate.
[0070]
As shown in FIGS. 19 and 20, the scooter type vehicle 1H has a fuel injection direction axis YY of the injector 50 at an acute angle (within approximately 90 °) between the central axis ZZ of the cylinder assembly 39 and the front side of the vehicle. Throttle body 49 and intake pipe 56 are arranged so as to intersect.
[0071]
Also, Reference example , An air cleaner 48H is disposed in front of the storage box 7H below the operation seat 8, and a suction pipe 54 extends from the lower portion toward the throttle body 49. Here, since the throttle body 49 swings up and down integrally with the unit swing type engine 10 and the air cleaner 48H is fixed to the vehicle body side, the suction pipe 54 is formed of a flexible material or a bellows structure. The The fuel hose 57 is fixed to the rear frame 5 by a clamp 74, for example.
[0072]
The controller 58 is disposed in the space between the air cleaner 48H and the storage box 7H as a place where heat from the unit swing type engine 10 and the radiators 42a and 42b is difficult to be transmitted and is highly waterproof and dustproof. Although not shown in detail, a recess may be formed in the wall facing the storage box 7H of the air cleaner 48H, and the controller 58 may be fitted in this recess.
[0073]
And the battery 72 is arrange | positioned in the independent space where the lower floor storage chamber 32 was originally provided in the lower part of the step floor 31. If the battery 72 is disposed at this position, the wiring 76 between the controller 58 and the battery 72 can be shortened.
[0074]
On the other hand, the total length of the storage box 7H is shortened by arranging the air cleaner 48H in front of the storage box 7H. However, the shapes of the storage box 7H and the rear frame 5 may be changed so that the helmet 6 can be stored substantially vertically. At this time, if the upper end of the front wall of the storage box 7H is set below the front lower part (jaw) of the helmet 6, a helmet takeout space 80 can be provided above the front upper part of the storage box 7H and above the air cleaner 48H. When a person takes out the helmet 6, the user can easily take out the helmet 6 by inserting a hand 81 into the helmet taking-out space 80.
[0075]
The shape of the storage box 7H can also be applied to a vehicle using a conventional carburetor (not shown). Further, the suspension position of the unit swing type engine 10 may be either up or down.
[0076]
21 and 22 Is the ninth reference example of the scooter type vehicle 1J FIG. 21 is a left side view showing the internal structure of the scooter type vehicle 1J, and FIG. 22 is a schematic plan view of the scooter type vehicle 1J shown in FIG. The first reference example The same components as those of the scooter type vehicle 1A shown in FIG.
[0077]
As shown in FIGS. 21 and 22, this scooter type vehicle 1J basically has First reference example The scooter type vehicle 1A shown in FIG.
[0078]
First, the fuel tank 9J is moved from the rear of the storage box 7J to the independent space where the lower floor storage chamber 32 is originally provided, and as described in the description of the configuration of the fuel injection system. The fuel pump 51 is provided inside the fuel tank 9J. Further, an oil supply lid 92 is provided on the step floor 31 directly above the oil supply port 91 of the fuel tank 9J so as to be opened and closed.
[0079]
Since the fuel tank 9J is provided at the lower part of the step floor 31, the storage box 7J is extended rearward, and a large capacity can be secured. When the storage box 7J is extended rearward, the upper profile 79 of the air cleaner 48J overlaps the bottom surface of the storage box 7J in a side view with the rear cushion unit 15 being most compressed. When the air cleaner 48J and the bottom surface of the storage box 7J interfere with each other, an upward escape portion 93 may be provided on the bottom surface of the storage box 7J. As a result, even if the stroke amount of the rear cushion unit 15 is sufficiently secured, the capacity of the storage box 7J is not significantly reduced.
[0080]
Further, the bottom surface of the storage box 7J is formed in a mountain shape when viewed from the side, and the helmet 6 is stored in front of the apex in a front-lowered state, and the apex is set to the front side of the rear lower part of the helmet 6 so A helmet take-out space 80 can be formed below the lower portion, and when the user takes out the helmet 6, the user can easily take out the helmet 6 by inserting a hand 81 into the helmet take-out space 80. The shape of the storage box 7J can also be applied to a vehicle using a conventional carburetor (not shown).
[0081]
Furthermore, as a place where heat from the unit swing type engine 10 and the radiators 42a and 42b is not easily transmitted, and is highly waterproof and dustproof, Reference example , A rear storage chamber 94 is formed behind the storage box 7J adjacent to the combination lamp 35, and the controller 58 and the battery 72 are stored in the rear storage chamber 94. The rear storage chamber 94 is closed with a maintenance lid 95 that can be freely opened and closed.
[0082]
By arranging the controller 58 and the battery 72 adjacent to the combination lamp 35, the respective wirings 76 can be taken out in the same direction, and the wiring arrangement can be simplified. Further, since the controller 58 and the battery 72 are housed in the rear housing chamber 94, both the devices 58 and 72 can be simultaneously maintained by simply opening the maintenance lid 95.
[0083]
On the other hand, in the scooter type vehicle 1J, the fuel injection direction axis YY of the injector 50 is cylinder assembly so that the fuel injected from the injector 50 is directed toward the side where the curvature is large and the flow rate of the mixed gas is large in the intake port 55. The throttle body 49 and the intake pipe 56 are arranged so as to intersect the central axis ZZ of the motor 39 substantially at a right angle.
[0084]
The suspension position of the unit swing type engine 10 may be either up or down.
[0085]
23 and 24 show a scooter type vehicle 1K to which the present invention is applied. The first embodiment of FIG. 23 is a left side view showing the internal structure of the scooter type vehicle 1K, and FIG. 24 is a schematic plan view of the scooter type vehicle 1K shown in FIG. In addition, Ninth Reference Example The same components as those of the scooter type vehicle 1J shown in FIG.
[0086]
As shown in FIGS. 23 and 24, the air cleaner 48K disposed above the conduction case 14 of the scooter type vehicle 1K has a front portion extending from above the conduction case 14 to above the crankcase 37 so as to be seen in a plan view. It is formed in a substantially L shape. If the capacity of the air cleaner 48K is still insufficient, the extending portion 96 can be extended toward the muffler 46 side. And the capacity | capacitance of the whole air cleaner 48K can be easily adjusted by extending the front part of the air cleaner 48K.
[0087]
Further, by extending the front portion of the air cleaner 48K to above the crankcase 37, the suction pipe 54, the throttle body 49 and the intake pipe 56 extending from the air cleaner 48K to the intake port 55 are seen in a plan view along the traveling direction of the vehicle. It can be arranged in a substantially straight line. As a result, an intake downdraft effect is obtained, intake efficiency, charging efficiency, and combustion efficiency are improved, leading to an increase in output.
[0088]
25 and 26 Is a tenth reference example of a scooter type vehicle 1L FIG. 25 is a left side view showing the internal structure of the scooter type vehicle 1L, and FIG. 26 is a schematic plan view of the scooter type vehicle 1L shown in FIG. In addition, Ninth Reference Example The same components as those of the scooter type vehicle 1J shown in FIG.
[0089]
As shown in FIGS. 25 and 26, Tenth reference example Since the scooter type vehicle 1L has a fuel tank 9L provided at the lower part of the step floor 31, a space behind the storage box 7L is vacant. Therefore, an air cleaner 48L is disposed on a part of this space, on the left side behind the storage box 7L. is there. A suction pipe 54 extends substantially straight from the lower portion of the air cleaner 48L toward the throttle body 49. Here, since the throttle body 49 swings up and down integrally with the unit swing type engine 10 and the air cleaner 48L is fixed to the vehicle body side, the suction pipe 54 is formed of a flexible material or a bellows structure. The
[0090]
By arranging the suction pipes 54 in a substantially straight line, the intake resistance is reduced and the output is improved. Further, since the air cleaner 48L is arranged not on the conduction case 14 but behind the storage box 7L, the freedom (in design) of the lower line 30a of the rear frame cover 30 provided so as to surround the left and right of the rear frame 5 is increased. Increase.
[0091]
When the unit swing type engine 10 is suspended on the engine suspension bracket 12a provided on the rear frame 5 by a pair of left and right engine suspension bosses 11a arranged side by side on the upper surface, the suction pipe 54 is connected to the left and right engine suspension bosses. It arrange | positions so that it may pass between 11a and the suspension bracket 12a.
[0092]
Further, since only a part of the space behind the storage box 7L is used for the arrangement of the air cleaner 48L, the other part, that is, the right side of the air cleaner 48L can be used as the rear extension 97 of the storage box 7L. Can also be stored. Further, the controller 58 is disposed between the air cleaner 48L and the rear extension 97 of the storage box 7L as a place where heat from the unit swing type engine 10 and the radiators 42a and 42b is not easily transmitted and is highly waterproof and dustproof.
[0093]
A helmet take-out space 80 is provided between the rear extension 97 and the rear part of the helmet 6, and when the user takes out the helmet 6, the user removes the helmet 6 by inserting a hand 81 into the helmet take-out space 80. make it easier.
[0094]
It should be noted that the shape of the storage box 7L of the present embodiment in which the helmet 6 can be easily taken out and a long object can be stored is also applicable to a vehicle using a conventional carburetor (not shown).
[0095]
27 and 28 Is the eleventh reference example of the scooter type vehicle 1M. FIG. 27 is a left side view showing the internal structure of the scooter type vehicle 1M, and FIG. 28 is a schematic plan view of the scooter type vehicle 1M shown in FIG. The first reference example The same components as those of the scooter type vehicle 1A shown in FIG.
[0096]
As shown in FIGS. 27 and 28, this scooter type vehicle 1M is basically the same. First reference example The scooter type vehicle 1A shown in FIG.
[0097]
That is, since the suspension of the unit swing type engine 10 is performed by the engine suspension boss 11b on the lower surface and the engine suspension bracket 12b on the vehicle body side, the bottom surface of the storage box 7M is made substantially parallel (horizontal) to the ground, and the rear cushion. In the state where the unit 15 is most compressed, the bottom surface of the storage box 7M is lowered to a position where the upper profile 79 of the unit swing type engine 10 and the intake device 47 does not interfere with the bottom surface of the storage box 7M. As a result, the dead space below the storage box 7M is eliminated, and the seat surface of the operation seat 8 can be lowered.
[0098]
Accordingly, a suction pipe 54 extending from the throttle body 49 to the air cleaner 48M in a plan view and obliquely rearward of the vehicle can also be arranged substantially parallel to the bottom surface of the storage box 7M and linearly, and intake (ventilation) resistance Will lead to increased output. The fuel pump 51 is attached to the rear wall of the storage box 7M.
[0099]
Further, the controller 58 and the battery 72 are installed in an independent space where the lower floor storage chamber 32 is originally provided at the bottom of the step floor 31 which is difficult to transmit heat from the unit swing type engine 10 and the radiators 42a and 42b, and is highly waterproof and dustproof. Are placed side by side. Since the controller 58 and the battery 72 are arranged in parallel, the wiring 76 between the two 58 and 72 can be shortened.
[0100]
In addition, Reference example Can be applied to a two-cycle engine or a water-cooled engine main body. When the engine main body 13 is a two-cycle engine, the throttle body 49 and the intake pipe 84 extend in the direction of the crankcase 37 and are connected as shown in FIG. The Further, when the engine body 13 is water-cooled, as shown in FIG. 27, the radiator is used for traveling wind such as the front of the head pipe 3 (reference numeral 42a) and the front part of the down tube 4 below the head pipe 3 (reference numeral 42b). It is desirable to arrange at a position where it can be easily hit. Further, the controller 82 may be disposed below the operation seat 8 and in front of the storage box 7M.
[0101]
29 and 30 Is a twelfth reference example of a scooter type vehicle 1N FIG. 29 is a left side view showing the internal structure of the scooter type vehicle 1N, and FIG. 30 is a schematic plan view of the scooter type vehicle 1N shown in FIG. In addition, Eleventh reference example The same components as those of the scooter type vehicle 1M shown in FIG.
[0102]
As shown in FIGS. 29 and 30, the scooter type vehicle 1N is also configured such that the unit swing type engine 10 is suspended by the engine suspension boss 11b on the lower surface and the engine suspension bracket 12b on the vehicle body side. The air cleaner 48N is provided in the independent space where the lower storage chamber 32 was originally provided, and the suction pipe 54 extending toward the rear throttle body 49 is formed of a flexible material or a bellows structure. It is. An intake pipe 38 extends upward along the down tube 4 from the front portion of the air cleaner 48N.
[0103]
The scooter type vehicle 1N has a throttle body 49 and an injector 50 so that the fuel injection direction axis YY of the injector 50 intersects the central axis ZZ of the cylinder assembly 39 at an acute angle (within approximately 90 °) on the front side of the vehicle. An intake pipe 56 is arranged. As a result, the fuel injected from the injector 50 is directed in a direction in which the curvature is large and the flow rate of the mixed gas is large in the intake port 55, and is injected linearly by the combustion chamber. As a result, an intake downdraft effect is also obtained, and intake efficiency, charging efficiency, and combustion efficiency are improved, leading to increased output.
[0104]
Further, the layout of the intake device 47 described above eliminates large protrusions other than the intake pipe 56 on the upper surface of the unit swing type engine 10 and allows the storage box 7N to be deep, so that the degree of freedom in storing the helmet 6 is increased. At the same time, the bottom surface of the storage box 7N is lowered to a position where the upper profile 79 of the unit swing type engine 10 and the rear wheel 16 does not interfere with the bottom surface of the storage box 7N when the rear cushion unit 15 is most compressed. The surface can also be lowered.
[0105]
The fuel hose 57 is fixed to the bottom surface of the storage box 7N with, for example, a clamp 74. Further, the controller 58 and the battery 72 are disposed in the front leg shield 27 which is a place where heat from the unit swing type engine 10 and the radiator 42b is not easily transmitted and is highly waterproof and dustproof.
[0106]
31 and 32 show a scooter type vehicle 1P to which the present invention is applied. The second embodiment FIG. 31 is a left side view showing the internal structure of the scooter type vehicle 1P, and FIG. 32 is a schematic plan view of the scooter type vehicle 1P shown in FIG. In addition, Eleventh reference example The same components as those of the scooter type vehicle 1M shown in FIG.
[0107]
As shown in FIG. 31 and FIG. Embodiment The scooter-type vehicle 1P shown in FIG. 1 is different from the one described so far, and is assumed to be a medium-sized vehicle (for example, 100 to 125 cc class) capable of two people.
[0108]
This scooter type vehicle 1P is also configured such that the unit swing type engine 10 is suspended by the engine suspension boss 11b on the lower surface thereof and the engine suspension bracket 12b on the vehicle body side, and an inherently lower floor storage chamber 32 is provided below the step floor 31. A fuel tank 9P having a fuel pump 51 is disposed in the independent space. Further, the controller 58 and the battery 72 are also disposed in the front leg shield 27 which is a place where heat from the unit swing type engine 10 and the radiator 42b is not easily transmitted and is highly waterproof and dustproof. From such a layout, the storage box 7P capable of storing, for example, two full-face helmets 99a and 99b in the front-rear direction can be provided in the rear frame cover 30 on the rear frame 5.
[0109]
Further, the helmet 99a disposed on the front side faces the front and the bottom surface thereof is disposed substantially parallel (horizontal) to the ground, and the helmet 99b disposed on the rear side faces rearward above the front helmet 99a. In addition, the bottom surface of the storage box 7P is formed in a stepped shape in front and back so that the bottom surface of the storage box 7P is disposed in an upside down state.
[0110]
As is well known, the flat shape of the helmet is a tapered shape where the width of the front side (jaw) is narrower than that of the rear side. Therefore, by arranging the front helmet 99a forward and the rear helmet 99b rearward, the storage box 7P is arranged. Can be formed in a substantially oval shape in plan view, and the front-rear width of the operation seat 8 does not widen. Further, the rear portion of the rear frame cover 30 can also be narrowed, and an overall slim streamlined planar shape can be obtained.
[0111]
Furthermore, by arranging the helmet 99b arranged on the back side upside down, it becomes possible to arrange the rear parts of the helmets 99a and 99b overlapped with each other, thereby shortening the overall length of the storage box 7P. Can be
[0112]
Further, by arranging the helmet 99b arranged on the rear side above the front helmet 99a and at the front lower side, the upper part of the unit swing type engine 10 and the rear wheel 16 even when the rear cushion unit 15 is most compressed. The profile 79 does not interfere with the rear bottom surface of the storage box 7P. Further, a sufficient stroke amount of the rear cushion unit 15 can be secured.
[0113]
Further, since the bottom surface of the storage box 7P below the helmet 99a disposed on the front side can be formed substantially parallel (horizontally) to the ground, the seat surface of the front operation seat 8 can be lowered. A fuel hose 57 is fixed by, for example, a clamp 74 to the bottom surface of the storage box 7P below the front helmet 99a.
[0114]
Further, the suction pipe 54, the throttle body 49, and the intake pipe 56 from the air cleaner 48P to the intake port 55 are arranged in a substantially straight line in plan view, and between the air cleaner 48P and the intake pipe 56. The suction pipe 54 As shown in FIG. 31, it is arranged substantially parallel to the ground. 31 and 32, the fuel hose 57 from the fuel pump 51 provided in the fuel tank 9P is extended from the lower part of the step floor 31 into the rear frame cover that constitutes the vehicle body cover. 50.
[0115]
And Second embodiment Shows an example in which the present invention is applied to a scooter type vehicle 1P having an injector 50 as fuel injection means, but the storage box 7P is also applicable to a vehicle using a conventional carburetor (not shown). Is possible. Moreover, when using a carburetor, you may form the escape part 100 dented upwards in the storage box 7P bottom face under the front helmet 99a.
[0116]
33, 34 and 35 show a scooter type vehicle 1Q to which the present invention is applied. Thirteenth reference example FIG. 33 is a left side view showing the internal structure of the scooter type vehicle 1Q, FIG. 34 is a right side view thereof, and FIG. 35 is a schematic plan view of the scooter type vehicle 1Q shown in FIGS. FIG. The first reference example The same components as those of the scooter type vehicle 1A shown in FIG.
[0117]
As shown in FIGS. 33, 34, and 35, the unit swing type engine 10 mounted on the scooter type vehicle 1Q is one of the above-described units. Embodiments and reference examples Unlike the described one, a crankcase 37 having a crankshaft (not shown) extending along the traveling direction of the vehicle, and a substantially horizontal axis on the right side of the crankcase 37, the central axis ZZ of which is the traveling of the vehicle. The unit swing type engine 10 includes an engine body 13 of a four-cycle engine having an L-shape in a plan view, which is composed of a cylinder assembly 39 arranged orthogonal to the direction.
[0118]
An air cleaner 48Q is disposed on the right side of the vehicle body, in front of the muffler 46, and a throttle body 49 and an intake pipe 56 extend in front of the air cleaner 48Q. An injector 50 is disposed on the storage box 7Q side, that is, the left side of the throttle body 49, and a control that extends from a fuel hose 57 extending from the fuel pump 51 built in the fuel tank 9Q and a controller 58 disposed on the side of the fuel tank 9Q. A cable 77 is connected. A throttle cable 53 is connected to the right side of the throttle body 49.
[0119]
On the other hand, the air cleaner 48 </ b> Q has a substantially U-shaped planar shape, and is disposed so that the concave portion surrounds the throttle body 49. As a result, the connecting portion between the injector 50 and the fuel hose 57 is protected.
[0120]
As described above, the injector 50 is disposed on the storage box 7Q side of the throttle body 49, and the throttle cable 53 is connected to the opposite side, so that a sufficient space for the throttle cable 53 can be secured. The throttle cable 53 can be easily passed.
[0121]
When the engine cooling method is a water cooling type, the radiator is disposed at a position where the traveling wind is easily hit, such as the front of the head pipe 3 (reference numeral 42a) and the front part of the down tube 4 below the head pipe 3 (reference numeral 42b). It is desirable. Further, the radiator 42c may be disposed on the side of the storage box 7Q.
[0122]
36 and 37 The 14th reference example of scooter type vehicle 1R FIG. 36 is a left side view showing the internal structure of the scooter type vehicle 1R, and FIG. 37 is a schematic plan view of the scooter type vehicle 1R shown in FIG. In addition, Thirteenth reference example The same components as those of the scooter type vehicle 1Q shown in FIG.
[0123]
As shown in FIGS. 36 and 37, the unit swing type engine 10 mounted on the scooter type vehicle 1R is also provided. Thirteenth reference example The engine main body 13 having an L-shape in plan view is provided as in FIG. 1, and the engine main body 13 is a two-cycle engine.
[0124]
Since the engine body 13 is a two-cycle engine, the throttle body 49 and the intake pipe 56 are connected to the crankcase 37, 14th Reference Example Is disposed in the space in front of the conductive case 14. Further, an air cleaner 48R having a substantially U-shaped planar shape is disposed in the space, and the recess is disposed so as to surround the throttle body 49. As a result, the connecting portion between the injector 50 and the fuel hose 57 is protected.
[0125]
In addition, 14th Reference Example Shows an example in which the fuel pump 51 is disposed outside the fuel tank 9R.
[0126]
By the way, any of the above Embodiments and reference examples In FIG. 38, the injector 50 is shown mounted on the throttle body 49, but it can also be arranged on the intake pipe 56 or the cylinder head 41. Examples thereof are shown in FIGS.
[0127]
As shown in FIGS. 38 and 39, the cylinder head is provided with an exhaust port 44 on the lower side and an intake port 55 on the inner upper side, and both ports 44 and 55 are operated via a camshaft 61. 101 and the exhaust valve 102 are opened and closed.
[0128]
FIG. 38 shows an example in which the intake pipe 56S extends from the rear side of the engine body 13S and is connected to the intake port 55 of the cylinder head 41S, and FIG. 39 conversely shows that the intake pipe 56T extends from the front side of the engine body 13T to the cylinder head 41T. The example connected to the intake port 55 of FIG. In any case, the injectors 50S and 50T can be inserted in the middle of the intake pipes 56S and 56T or the cylinder heads 41S and 41T.
[0129]
【The invention's effect】
As described above, according to the scooter type vehicle according to the present invention, the capacity of the storage box can be sufficiently secured, the capacity of the entire air cleaner can be easily adjusted, and the controller can be heated from the unit swing type engine or the radiator. Can prevent from water, dust, etc.
[0130]
In addition, since the intake (ventilation) resistance is reduced and the intake downdraft effect is obtained, intake efficiency, charging efficiency and combustion efficiency are improved, and engine output is improved.
[0131]
Furthermore, the seat surface of the driving seat can be lowered, and the space below the storage box can be used effectively.
[0132]
And while being able to take out a helmet easily from a storage box, two helmets can be stored compactly.
[Brief description of the drawings]
[Figure 1] First reference example of scooter type vehicle The left view which shows.
FIG. 2 is a left side view showing the internal structure of the scooter type vehicle shown in FIG.
3 is a schematic plan view of the scooter type vehicle shown in FIGS. 1 and 2. FIG.
FIG. 4 is a configuration diagram of a fuel injection system.
FIG. 5 is an enlarged left side view of the fuel tank.
FIG. 6 is an enlarged plan view of a fuel tank.
[Fig. 7] Second reference example of scooter type vehicle The left view which shows the internal structure of.
8 is a schematic plan view of the scooter type vehicle shown in FIG.
FIG. 9 Third reference example of scooter type vehicle The left view which shows the internal structure of.
10 is a schematic plan view of the scooter type vehicle shown in FIG. 9. FIG.
FIG. 11 Fourth reference example of scooter type vehicle The left view which shows the internal structure of.
12 is a schematic plan view of the scooter type vehicle shown in FIG.
FIG. 13 The fifth reference example of the scooter type vehicle The left view which shows the internal structure of.
14 is a schematic plan view of the scooter type vehicle shown in FIG.
FIG. 15 Sixth reference example of scooter type vehicle The left view which shows the internal structure of.
16 is a schematic plan view of the scooter type vehicle shown in FIG.
FIG. 17 Seventh reference example of scooter type vehicle The left view which shows the internal structure of.
18 is a schematic plan view of the scooter type vehicle shown in FIG.
FIG. 19 Eighth reference example of scooter type vehicle The left view which shows the internal structure of.
20 is a schematic plan view of the scooter type vehicle shown in FIG.
FIG. 21 Ninth reference example of scooter type vehicle The left view which shows the internal structure of.
22 is a schematic plan view of the scooter type vehicle shown in FIG. 21. FIG.
FIG. 23 shows a scooter type vehicle to which the present invention is applied. Of the first embodiment The left view which shows an internal structure.
24 is a schematic plan view of the scooter type vehicle shown in FIG. 23. FIG.
FIG. 25 is a scooter type vehicle to which the present invention is applied. Of the tenth reference example The left view which shows an internal structure.
26 is a schematic plan view of the scooter type vehicle shown in FIG. 25. FIG.
FIG. 27 11th reference example of scooter type vehicle The left view which shows the internal structure of.
FIG. 28 is a schematic plan view of the scooter type vehicle shown in FIG. 27.
FIG. 29 12th reference example of scooter type vehicle The left view which shows the internal structure of.
30 is a schematic plan view of the scooter type vehicle shown in FIG. 29. FIG.
FIG. 31 shows a scooter type vehicle to which the present invention is applied. The second embodiment The left view shown.
32 is a schematic plan view of the scooter type vehicle shown in FIG. 31. FIG.
FIG. 33 13th reference example of scooter type vehicle The left view which shows the internal structure of.
34 is a right side view of the scooter type vehicle shown in FIG. 33. FIG.
35 is a schematic plan view of the scooter type vehicle shown in FIGS. 33 and 34. FIG.
FIG. 36 14th reference example of scooter type vehicle The left view which shows the internal structure of.
37 is a schematic plan view of the scooter type vehicle shown in FIG. 36. FIG.
FIG. 38 is a view in which an injector is disposed between a throttle body and an intake port, and an intake pipe extends from the rear of the engine body.
FIG. 39 is a view in which an injector is disposed between the throttle body and the intake port, and the intake pipe extends from the front of the engine body.
[Explanation of symbols]
1A ~ 1R Scooter type vehicle
2 Body frame
3 Head pipe
4 Down tube
6,99a, 99b Helmet
7A-7R storage box
8 Driving seat
9A-7R Fuel tank
10 unit swing type engine
13 Engine body
14 Conduction case
15 Rear cushion unit
17 Front wheel
26 body cover
28 Rear leg shield
30 Rear frame cover
31 step floor
37 Crankcase
39 Cylinder assembly
41 Cylinder head
42a, 42b, 42c Radiator
47 Air intake system
48A to 48E, 48H to 48R, 86 Air cleaner
49 Throttle body
50 Injector (fuel injection means)
51 Fuel pump
56, 56S, 84 Intake pipe
57 fuel hose
58, 82, 89 controller
ZZ Center axis of cylinder assembly

Claims (3)

The air cleaner and throttle body constituting the intake device, the fuel injection means, and the front side of the crankcase having a crankshaft extending in the width direction of the vehicle body are inclined forward substantially horizontally and the central axis thereof is along the traveling direction of the vehicle. A water-cooled multi-cylinder engine body having a cylinder assembly disposed therein, an intake pipe connected to the engine body, a storage box capable of storing a helmet disposed below the operation seat, a fuel tank, A rear leg that includes a rear cushion unit and a vehicle body cover that covers the periphery of the vehicle body frame. The rear leg includes a step floor at the bottom of the head pipe that supports the front wheel and the driver's seat. In a scooter type vehicle with a shield,
The engine body is disposed below the operation seat, the radiator for cooling the engine body is disposed at a front portion of a down tube extending rearward and downward from the head pipe, and the fuel tank is disposed at a lower portion of the step floor. And
The bottom shape of the storage box is formed in a stepped shape in the front and rear in the vehicle side view, and two helmets can be stored in the storage box in the front and rear,
A scooter type vehicle characterized in that a suction pipe between the intake pipe and the air cleaner is substantially parallel to the ground, and an injector as the fuel injection means is mounted on the intake pipe between the throttle body and the cylinder head.   The fuel tank includes a fuel pump, the fuel pump and the injector are connected by a fuel hose, and the fuel hose extends from below the step floor into a rear frame cover constituting the vehicle body cover. The scooter type vehicle according to 1. The air cleaner and throttle body constituting the intake device, the fuel injection means, and the crankcase provided with the crankshaft extending in the width direction of the vehicle body are inclined forward in a substantially horizontal direction and the central axis thereof is along the traveling direction of the vehicle. A water-cooled multi-cylinder engine body having a cylinder assembly disposed therein, a fuel tank, and a head pipe that supports a front wheel while including a storage box capable of storing a helmet between the engine body and the operation seat. In the scooter type vehicle in which a rear leg shield provided with a step floor at the bottom thereof is provided with a step floor at the bottom between the above driving seats.
The radiator for cooling the engine main body is disposed at the front of the down tube extending rearward and downward from the head pipe, the fuel tank is disposed at the lower part of the step floor, and the air cleaner is formed in a substantially L shape in plan view. And
The front part of the air cleaner is extended to the upper part of the crankcase of the engine body, and the intake pipe that connects the throttle body and the air cleaner to the cylinder head of the engine body is arranged in a straight line in plan view along the traveling direction of the vehicle. A scooter type vehicle characterized by.

Images