JPS5930781Y2 - motorcycle - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement in a water-cooled motorcycle equipped with a radiator for engine cooling.

In conventional water-cooled motorcycles, the radiator is installed in front of the engine, so if the area of the ventilation passage is widened to strengthen the cooling capacity of the radiator, this inevitably increases the air resistance of the vehicle. This made it difficult to install large radiators.

The present invention was proposed in view of the above, and it is possible to install a large radiator with a large ventilation path area without causing an increase in air resistance, and to effectively cool the radiator with the wind from the vehicle. An object of the present invention is to provide the above-mentioned motorcycle.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. A motorcycle M includes a vehicle body B1 having a head pipe 1, a front fork rotatably connected to the head pipe 1 via a steering shaft 2, and supporting a front wheel Wf. Ff, the vehicle body B
Engine E1 and engine E housed and fixed inside
The main component is a rear fork Rf which is pivotally connected to the rear wheel Wr and supports the rear wheel Wr at its free end.

Vehicle body B has a lower fairing 3 that houses and fixes the engine.
, an upper fairing 4 that is connected to the upper part of the fairing and covers the front surface of the upper part of the front fork Ff, and a lower fairing 3.
The seat stay 5 has a channel-shaped cross section and is separably connected to the rear end and covers the upper part of the rear wheel Wr.

The lower fairing 3 has a front part, left side, right side parts, and a bottom part, and has a shell shape with a completely open rear face, and has an upper end of a hollow neck part 3a that projects obliquely upward from the front end of the upper part. A head pipe 1 is fixedly installed.

At the center of the front surface of the lower fairing 3 and at both the left and right ends, there are a central air inlet 61 and side inlets 62, 62 as air inlets, and at both the left and right sides of the fairing 3 there are air outlet lowers, 7 open respectively, and inside the fairing 3, a bifurcated central ventilation duct 81 extending to the left and right lower portions of the central portion 61 and the rear portions of each portion 7, and a left and right side portion 62.
A pair of side ventilation ducts 82.82 extending from the left and right exits γ, 2 to the front half of the left and right exits γ, 1, respectively, are defined by the air flow distribution plate 9 and the baffle plate 10.10.

The airflow distribution plate 9 and the current plate 10, 10 are bonded to the inner wall of the fairing 3 so as to serve as its strength members. This is effective in increasing the reinforcing effect.

A radiator R of the engine E is attached to each lower output so as to cross it.

Therefore, while the vehicle is running, the running wind flowing into the central ventilation duct 8 is distributed to the left, right, lower, and
7, and the radiator R facing them,
Pass through each rear half of R, and also the left and right side populations 6□, 6
The running wind flowing into □ flows through the corresponding side ventilation duct 82.
82 to the left and right lower lower and γ front half parts, and passes through the front half parts of the radiators R and H facing them, and these running winds are caused by the suction effect of the airflow on the outer surface of the lower fairing 3. strongly drawn to the outside.

In addition, if there is only one air inlet, the running wind will concentrate at the rear of the air outlet due to its inertia, so the amount of ventilation at the front of the radiator tends to be insufficient. , in the rear half, each independent central and side ventilation duct 8□.

Since running air is supplied through 82, the amount of ventilation at the front and rear of each radiator R can be made uniform.

Furthermore, for the center population 6□, the effective opening area changes due to the vertical movement of the front wheel Wf located immediately before it, but the left and right side populations 62, 62 are not interfered with by the front wheel Wf, so there is no change in the effective opening area. , Overall, the effect of the vertical movement of the front wheels Wf is extremely small, and the air volume is always adjusted to the vehicle speed. .

82.8□.

In the figure, 11 is a fuel tank, and 12 is a suspension spring device for the rear wheel Wr.

As described above, according to the present invention, the engine located between the front and rear wheels is covered with a fairing, and the air inlet is provided on the front of the fairing, and the air outlet is provided on both the left and right sides. , and the radiator of the engine is attached to the air outlet of the air outlet. Therefore, it is possible to install a large-capacity radiator with a large air passage area without increasing the front projected area of the engine, and the fairing's rectification function and Together, the air resistance of the vehicle can be significantly reduced.

In particular, the air inlet is divided into a central inlet and side inlets arranged on both the left and right sides of the central inlet, and a bifurcated center is provided in the fairing from the central inlet to the rear half of each of the left and right air outlets. By forming a ventilation duct and a pair of side ventilation ducts extending from the left and right side inlets to the front half of the left and right air outlets, respectively, it is possible to eliminate unevenness in the amount of ventilation to the front and rear of each radiator, and also to improve the air flow between the front wheels. It is possible to reduce changes in the effective opening area of the air inlet due to vertical movement, and as a result, it is possible to constantly supply each part of each radiator with an amount of running air corresponding to the vehicle speed, and to effectively cool it.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention; FIG. 1 is a side view of the motorcycle, FIG. 2 is a plan view of the same, and FIG.
4 is a front view of the lower fairing. E...engine, R...radiator, Wf...front wheel, Wr...rear wheel, 3...lower fairing as fairing, 6□...center entrance, 6°... Side entrance, 7...Exit, 8□...Central ventilation hole 8□・
...Side ventilation duct.

Claims (1)

[Scope of utility model registration request] The engine located between the front and rear wheels is covered with a fairing, and a center inlet and a side inlet are provided at the center of the front of the fairing and at both left and right ends, and the left and right ends of the fairing are provided with a center inlet and a side inlet. Exits are opened on both right sides, and within the fairing there is a bifurcated central ventilation duct extending from the center entrance to the left and right exit halves, and a bifurcated central ventilation duct from the left and right side inlets to the left and right exit halves. a pair of side ventilation ducts each extending to the front and rear ends of the duct, and a radiator of the engine that extends to the front and rear ends of the outlet.