JPH09164804A - Hydroplane preventing device and automobile therewith - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a preventing device effective for preventing occurrence of a hydroplane condition and an automobile equipped with the preventing device. SOLUTION: When an automobile 1 has reached a water pool 22 during traveling at a high speed, the water in the water pool 22 is blown off by the air (indicated with an arrowmark) jetted over the front of a front wheel 11 from the top end of a hydroplane preventing device 12. The depth of the water pool 22b rearer than a position where air is jetted is much shallower than that of the water pool 22a fronter than the position where air is jetted, and not deep enough to float front wheels 11 on the water pool 22b surface.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hydroplane preventing device for preventing a hydroplane phenomenon which occurs when a vehicle runs at high speed in rainy weather, and an automobile equipped with the hydroplane preventing device.

[0002]

2. Description of the Related Art Conventionally, it has been pointed out that there is a danger of a hydroplane phenomenon when a vehicle travels at high speed in the rain.

This hydroplane phenomenon will be described with reference to FIGS. 3 and 4.

Naturally, the gravity G acts downward on the automobile 3. Due to this gravity G, the tire 31 is pressed against the road surface 41, and the grip force of the tire 31 is obtained. Here, when the automobile 3 travels, an air flow as indicated by an arrow pointing from left to right in FIG. 3 is generated. This air flow is fast on the upper side of the automobile 3 and slow on the lower side as shown in FIG. Therefore, the atmospheric pressure is lower on the upper side where the air flow is faster than on the lower side where the air flow is slow, and the lift force F acts upward on the vehicle 3 due to this pressure difference.

When the vehicle travels at a particularly high speed, the lift F becomes large and the difference from the gravity G becomes small, so that the downward force acting on the automobile 3 becomes small as a whole.

By the way, when it rains, a deep pool of water is often formed on the road surface. Here, when running at high speed, the downward force on the car becomes smaller, so
When the tire 31 fits in the deep puddle 42, the tire 31
Floats off the road surface 41. As a result, the driver cannot control the behavior of the automobile 3, which leads to a very dangerous state.

As a measure for preventing the occurrence of the hydroplane phenomenon as described above, there is currently no method other than suppressing the traveling speed. However, the hydroplane phenomenon is sometimes 80 km / h to 90
Since it may occur even at a speed of about km / h, there are no countermeasures enough to take it when considering traveling on an expressway, and effective countermeasures have been demanded.

[0008]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a hydroplane preventing device which is effective in preventing the occurrence of a hydroplane phenomenon and an automobile equipped with the hydroplane preventing device.

[0009]

The hydroplane prevention device of the present invention is characterized in that compressed air is blown to the front portion of a tire of an automobile.

The compressed air blown to the front of the tire blows away water in the water pool so that the tire is always in contact with the road surface to prevent the hydroplane phenomenon.

Here, the air can be compressed by narrowing the interval between the air outlets at the tip of the hydroplane preventing device.

Further, in a vehicle equipped with the above-mentioned hydroplane prevention device, an air intake port is provided on the bonnet or on the front grille, and this air intake port is connected to the hydroplane prevention device by a pipe, so that the vehicle travels. To send the air forcedly taken in from the air intake to the hydroplane prevention device,
The power of the engine can drive a fan that directs the airflow created by the fan to the hydroplane protection device.

By the way, the hydroplane prevention device is
Sufficient effect can be obtained by providing the front two wheels of the vehicle, but it goes without saying that it may be provided in front of all four wheels.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view showing an automobile equipped with a hydroplane preventing device according to an embodiment of the present invention.

Referring to this drawing, the automobile 1 is provided with a hydroplane preventing device 12 for blowing air to the front portion of the front wheel 11. The hydroplane prevention device 12 is connected by a pipe (not shown) from an air intake port 13 provided on the hood of the automobile 1, and the interval between the air blowout ports 12a at the tip end thereof is very narrow. ing. That is, the air that is forcibly taken in from the air intake port 13 as the automobile 1 travels is compressed and blown out to the front part of the tire 11 from the air outlet port 12 a at the tip of the hydroplane prevention device 12. In particular, when traveling at high speed, the air blown from the air outlet 12a at the tip of the hydroplane prevention device 12 to the front part of the front wheel 11 is further compressed. Further, the hydroplane prevention device 12 is electronically controlled so that the direction can be changed according to the traveling speed of the automobile 1 and is always kept in an optimum state. However, in order to keep the water away from the tire 11, it is normally forward. It is designed to blow air toward the side.

Next, the operation will be described. FIG. 2 is a view for explaining the operation of the hydroplane prevention device according to the embodiment of the present invention.

There is a deep pool of water 22 on the road surface 21.
Here, when the automobile 1 travels at high speed and reaches the water pool 22, the water in the water pool 22 is compressed air blown from the air outlet 12a at the tip of the hydroplane prevention device 12 to the front part of the front wheel 11. (Shown by the arrow in the figure). That is, the depth of the water pool 22b at the rear of the position where the air is blown is considerably shallower than the depth of the water pool 22a at the front of the position where the air is blown.
It is not deep enough to float on b.

As a result, the front wheels 11 are always in contact with the road surface 21 even in rainy weather, and the grip force is always maintained, so that it is possible to avoid a situation in which the behavior of the automobile 1 cannot be controlled.

The hydroplane prevention device described above is provided only on the front part of the front wheel and not on the front part of the rear wheel, but it was blown from the water pool by the hydroplane prevention device on the front part of the front wheel. This is because the rear wheels usually pass through before the water returns to the pool. However, it goes without saying that a hydroplane prevention device may be provided at the front of all four wheels.

Further, the air intake port is placed on the bonnet and the air forcibly taken in from there is sent to the hydroplane prevention device. However, the air intake port may be provided in the front grille, and further depending on the engine. You may drive a fan and may send the air sent from this fan to a hydroplane prevention apparatus.

[0022]

As described above, according to the present invention,
It is possible to prevent the occurrence of the hydroplane phenomenon.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an automobile equipped with a hydroplane prevention device according to an embodiment of the present invention.

FIG. 2 is a view for explaining the action of the hydroplane prevention device according to the embodiment of the present invention.

FIG. 3 is a diagram for explaining an air flow when a car is running.

FIG. 4 is a diagram for explaining the hydroplane phenomenon.

[Explanation of symbols]

 1 Car 11 Front Wheel 12 Hydroplane Prevention Device 13 Air Intake

Claims (7)

[Claims] 1. A hydroplane prevention device, characterized in that compressed air is blown to the front of a tire of an automobile. 2. The hydroplane prevention device according to claim 1, wherein the air is compressed by narrowing an interval between air outlets at the tip of the hydroplane prevention device. 3. An automobile equipped with the hydroplane prevention device according to claim 1. 4. An air intake port is provided on the bonnet or on the front grill, and this air intake port is connected to a hydroplane prevention device by a pipe so that the air forcedly taken from the air intake port by running the vehicle is prevented from hydroplane. Vehicle according to claim 3, characterized in that it is sent to a device. 5. The vehicle according to claim 3, wherein a fan is driven by the power of the engine, and the air flow created by the fan is sent to a hydroplane prevention device. 6. The automobile according to claim 3, wherein the hydroplane prevention device is provided in front of the front two wheels. 7. The vehicle according to claim 3, wherein the hydroplane prevention device is provided in front of all the four wheels.