JP4364418B2 - Radiator cooling structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an advantageous structure for improving the cooling efficiency of a radiator.
[0002]
[Prior art]
Japanese Examined Patent Publication No. 3-73732 shows a structure in which an upper radiator and a lower radiator are arranged on the inner side of the front cowl with a space in the vertical direction so that intake system parts face the gap space between the upper radiator and the lower radiator. Yes.
[0003]
[Problems to be solved by the invention]
By the way, in order to improve the cooling efficiency of the radiator, it is necessary to guide the outside air taken into the front cowl as much as possible to the radiator, and to quickly exhaust the exhaust air that has passed through the radiator to the rear to improve the escape performance. is there.
[0004]
However, when an intake system component or the like is disposed behind the radiator, it may be difficult for the intake system component or the like to become a wall against the exhaust air from the radiator to improve the air removal performance. SUMMARY OF THE INVENTION An object of the present invention is to improve the cooling efficiency of a radiator using an intake box.
[0005]
[Means for Solving the Problems]
In order to solve the above-described problems, a radiator cooling structure according to the present invention is a vehicle including a radiator and an intake box that is disposed behind the radiator and surrounds intake system components. The front surface of the intake box facing the rear of the rear surface is a curved shape that protrudes forward in the left-right direction .
[0006]
【The invention's effect】
The back of the radiator has a curved shape that protrudes backward, and the front of the intake box that is located behind it has a curved shape that protrudes forward in the left-right direction, so it goes from the center to the left and right sides between the radiator and the intake box. The escape space that spreads out is formed. Therefore, the cooling air that has passed through the radiator moves toward the end along the curved shape of the intake box, and quickly flows backward by flowing in the escape space that gradually increases in width. For this reason, the slipping-out property becomes good, and the cooling efficiency of the radiator can be improved.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment will be described below with reference to the drawings. FIG. 1 is a side view of a motorcycle to which the present embodiment is applied, FIG. 2 is a view showing a side view arrangement relationship between a radiator and an intake box, FIG. 3 is a sectional view taken along line 3-3 in FIG. 4 is a sectional view taken along line 4-4 of FIG. 1, and FIG. 5 is a sectional view taken along line 5-5 of FIG.
[0008]
In FIG. 1, the motorcycle is configured to have a race specification. Reference numeral 1 denotes a front wheel, 2 denotes a front fork, 3 denotes a pair of left and right body frames, 4 denotes a rear swing arm, 5 denotes a rear wheel, 6 denotes a fuel tank, 7 is a sheet | seat, 8 is a fairing.
[0009]
A two-cycle water-cooled V-type two-cylinder engine 10 is suspended and supported on the vehicle body frame 3, and the banks of the upper cylinder 11 and the lower cylinder 12 are located toward the front of the vehicle body, and are vaporized to connect to the respective intake ports. Containers 13 and 14 are arranged. These carburetors 13 and 14 are accommodated in an intake box 15 arranged in a bank. The intake box 15 is connected to a rear end of an intake duct 16 formed obliquely downward and rearward along the lower left and right inner lower portions of the fairing 8 to apply ram pressure to the carburetors 13 and 14.
[0010]
In front of the intake box 15 upper radiator over data 17 and the lower radiator over data 18 is arranged with an interval in the vertical, so as to cool the engine 10. Intake duct 16 in a side view illustration a substantially linear path by passing between the upper radiator over data 17 and the lower radiator over data 18, the upper radiator over data 17 above the intake duct 16, the lower radiator chromatography The collector 18 is disposed below the intake duct 16. The exhaust pipe 19 a of the upper cylinder 11 extends rearward through the upper side of the engine 10, and the exhaust pipe 19 b of the lower cylinder 12 extends rearward through the lower side of the engine 10.
[0011]
As shown in FIG. 2, the lower front 20 of the intake box 15 forms a curved shape convex to the rear, front and bottom of the upper radiator over data 17 enters into between the upper radiator over data 17 and the lower radiator over data 18 radiators which connects the front of the over 18 other in a substantially continuous curved surface. In addition, the front wheel 1 is located close to the upper limit stroke locus 1a and close to the limit of the load clearance. Top front 21 of the intake box 15 made in the rear of the upper radiator over data 17 forms a curved shape in which the upper is directed gradually rearward, upward to form a relief space 23 to expand between the back 22 of the upper radiator over data 17 ing.
[0012]
As shown in FIG. 3, the upper radiator over data 17 and the intake box 15 is disposed to the inside of the fairing 8, and the opening is large air introduction port 24 in front of the fairing 8, running wind on the W radiator over data 17 It comes to lead to. In addition, an inlet 25 of the intake duct 16 is opened inside the left and right walls of the fairing 8. The upper radiator over data 17 forms a curved shape convex toward the rear, the front face is adapted to receive efficiently running wind W to become a concave surface. Although not clear which is the same structure under radiator over data 18 in the figure.
[0013]
Intake box 15 located behind the upper radiator over data 17 its front upper portion 21 a curved shape convex toward the front in the lateral direction, the central portion is arranged close to the center of the rear face 22 of the upper radiator over data 17, the intake spacing between the back 22 of the front upper 21 and the upper radiator over data 17 of box 15 has a relief space 23 extending more toward the right and left sides. Reference numeral 26 in the drawing denotes an engine hanger that extends downward from the lower left and right of the vehicle body frame 3 and supports the engine 10.
[0014]
As shown in FIGS. 4 and 5, the vaporizer 13 and the suction port 27 are close to the front upper portion 21 with the minimum necessary clearance, and the suction port 28 of the vaporizer 14 is similarly moved to the front upper portion 21 with the minimum necessary clearance. Are close by. Therefore, by approaching the upper radiator over data 17 and the intake box 15 while securing the road clearance, it is secured to the size required capacity of the air intake box 15.
[0015]
Next, the operation of this embodiment will be described. As shown in FIG. 3, the curved shape of the convex upper radiator over data 17 rearward, since the intake box 15 forms a curved shape convex toward the front, the front upper portion of the rear 22 and the intake box 15 of the upper radiator over data 17 21 Is formed with a clearance space 23 that increases in width toward the left and right sides. Accordingly, the cooling air passing over the radiator over data 17 flows to the edge direction of the relief space 23 spread being guided by the upper front portion 21 of the intake box 15 like an arrow shown, quickly flows backward.
[0016]
Moreover, as shown in FIG. 2, escaping space 23 between the rear 22 of the upper radiator over data 17 and the upper front 21 of the intake box 15 spread upward, and because the upper front portion 21 also forms a curved shape in the vertical direction , also the cooling air passing over the radiator over data 17 flows to rapidly upward by being guided by the upper front portion 21 of the intake box 15. Therefore, it is possible to removability is significantly improved, thereby improving the cooling efficiency of the upper radiator over data 17.
[0017]
Moreover, the upper radiator over data 17, placed close intake box 15 and the lower radiator over data 18 in road clearance limits of the front wheel 1, and the intake box 15 is brought close to the upper radiator over data 17, further front upper 21 and lower front Since the suction port 27 of the carburetor 13 and the suction port 28 of the carburetor 14 are brought close to 20, the intake box 15 can have a large capacity.
[0018]
Further, as shown in FIG. 1, since the connection to the intake box 15 to the intake duct 16 through between the upper radiator over data 17 and the lower radiator over data 18 may be a passage that is more linear the intake duct 16 Intake efficiency can be improved by reducing the airflow resistance of the intake air. In addition, the intake duct 16 is disposed along the left and right inner surfaces of the fairing 8 and cannot prevent the flow of the traveling wind W taken into the inlet 25.
[0019]
Furthermore, as shown in FIG. 2, the lower front 20 of the intake box 15 is disposed between the upper radiator over data 17 and the lower radiator over data 18, the surface of the upper radiator over data 17 and the lower radiator over data 18 substantially continuously since the curved surface, it is possible to improve the cooling efficiency of the lower radiator over data 18 by flowing running wind W that has been taken from the inlet 25 to the lower side of the lower radiator over data 18.
[0020]
The present invention is not limited to the above-described embodiments, and various modifications and applications are possible. For example, the intake box may be an intake system box-like component such as an air cleaner. As an intake system component, there is a fuel injection device in addition to a carburetor.
[Brief description of the drawings]
FIG. 1 is a side view of a race-specific motorcycle to which this embodiment is applied. FIG. 2 is a diagram showing a side-view arrangement relationship between a radiator and an intake box. 4 is a sectional view taken along line 4-4 in FIG. 1. FIG. 5 is a sectional view taken along line 5-5 in FIG.
1: front wheel, 8: fairing, 10: 2-cycle water-cooled V-type 2-cylinder engine, 11: upper cylinder, 12: lower cylinder, 13: carburetor, 14: carburetor, 15: intake box, 16: intake duct, 17: upper radiator over data, 18: lower radiator over data, 20: bottom front of the intake box, 21: upper front of the air intake box, 22: rear surface of the upper radiator

Claims (5)

In a vehicle including a radiator and an intake box disposed behind the radiator and surrounding the intake system components,
A cooling structure for a radiator, wherein a back surface of the radiator has a curved shape that protrudes backward, and a front surface of the intake box that faces the back of the back surface has a curved shape that protrudes forward in the left-right direction . The left and right sides of the radiator and the intake box are surrounded by a vehicle body cover that opens forward, and the radiator is divided into upper and lower parts, and a duct for introducing outside air into the intake box is provided along the inner side surface of the vehicle body cover. place Te Align, causes connected through the lower of the upper radiator over data in side view to the intake box, cool the radiator according to claim 1, characterized in that a lower radiator over data below the duct Construction. 2. The radiator according to claim 1, wherein the radiator is inclined forward, and the intake box facing the rear side of the rear surface has a curved shape that protrudes forward from the lower side to the upper side of the radiator. Cooling structure. The radiator cooling structure according to claim 1, wherein the intake box is curved in front of the left and right engine hangers. 2. The radiator cooling structure according to claim 1, wherein the intake box has a curved surface continuous with a front surface of the radiator below the radiator. 3.

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