JPH0223787Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Technical field of the invention This invention is an engine cooling ventilation system that can optimally adjust the cooling ventilation path introduced into the engine room and form an effective ventilation path. Regarding equipment.

(b) Technical background Outside air is introduced into the engine room through the radiator grille and between the bumper and front skirt, cooling the condenser, radiator, and engine. In this case, it is necessary for the cooling ventilation passage to effectively pass through the object to be cooled in order to increase the heat exchange rate, but in particular, the forced cooling fan and fan shroud of the condenser act as ventilation resistors when the vehicle speed exceeds a certain level. So this is a problem.

(C) Prior Art and Problems As a conventional arrangement of equipment in an engine room, for example, the one shown in Japanese Utility Model Application Laid-open No. 57-157718 or shown in FIG. 3 is known. In FIG. 3, first, in order to introduce outside air, a grille 3 is provided between the front edge of the bonnet 1 and the front bumper 2, and the outside air mainly flows in through this grille 3. Further, a front skirt 4 is arranged below the bumper 2, and outside air is guided through this skirt 4 as well. A radiator 5 and a condenser 6 are arranged in front of the radiator 5 in the room, and the introduced outside air flows through the radiator 5 and the condenser 6 to effect heat exchange. Furthermore, fans 7 and 8 are arranged on the rear surface of the radiator 5 and on the front surface of the condenser 6 to provide forced ventilation.

However, this is not so much of a problem when the vehicle speed is low, but when the vehicle speed is approximately 60 km/h or higher, the condenser 6 and radiator 5 become ventilation resistors, so the introduced outside air is passed through the front skirt 4. There was a problem that leakage occurred through the gap between the body stay 9 and the body stay 9 at the bottom of the condenser 6, and an effective ventilation path was not formed, resulting in a decrease in the heat exchange function.

(d) Purpose of the invention The present invention focuses on the above-mentioned conventional problems, and eliminates the leakage of outside air introduced into the engine room, forms a ventilation path that allows the air to flow effectively to objects to be cooled such as condensers, etc. It is an object of the present invention to provide an engine cooling ventilation device that can improve heat exchange efficiency.

(e) Structure of the invention In order to achieve the above object, the engine cooling ventilation system according to the invention includes a forced cooling fan device installed in a tiltable manner in front of a condenser installed in parallel with a radiator, and The area between the edge and the front skirt is covered with a shroud.

(F) Embodiments of the invention Below, embodiments of the invention will be described in detail with reference to the drawings.

Fig. 1 is a sectional view showing the structure of this embodiment, and Fig.
The figure is also a view seen from the bottom of the vehicle. As shown in the figure, a grille 3 provided between a bonnet 1 and a front bumper 2 serves as an outside air inlet, and an inlet is also formed in the lower part of the bumper 2 by a front skirt 4. In the engine room, a radiator 5 and a condenser 6 are arranged side by side, and each of them is provided with forced cooling fans 7 and 8, as in the conventional case.

In the engine cooling ventilation system having the above configuration, in this embodiment, in particular, the fan device 11 including the fan 8 disposed in front of the condenser 6 and the fan shroud 10 is configured to be tiltable. For this reason, the lower edge of the fan shroud 10 is connected to the lower edge of the capacitor 6 by a hinge 12, and can be erected or folded forward around the hinge 12. Further, in order to perform this upright operation, an actuator 13 such as a motor is installed at the rear of the heat exchanger side including the condenser 6 and the radiator 5, and a wire 14 drawn out from the actuator 13 is installed.
is continuously connected to the upper edge side of the fan shutter loud 10. Therefore, by operating the actuator 13, the fan device 11 is tilted forward by its own weight. Note that 14A is a guide for the wire 14. Here, the actuator 13 is actuated by the output of a speed sensor 15, and is set to tilt the fan device 11 forward when the sensor 15 detects a vehicle speed of 60 km/h or more.

On the other hand, as shown in FIG. 2, a shroud 16 is disposed between the front skirt 4 and the body stay 9 disposed below the heat exchangers 5 and 6 to prevent the introduced outside air from leaking through the gap. That's what I do. The shroud 16 is a flat plate and is arranged so as to cover almost the entire gap, but a holding hole 17 is provided to hold the fan device 11 when it is knocked down.
The system is designed to maintain stability during high-speed driving. In the engine cooling ventilation system configured in this manner, the fan device 11 is positioned in front of the condenser 6 at low speeds to perform normal cooling ventilation, but at high speeds, the actuator 13 is actuated by the sensor 15 and the fan device 11 is placed in front of the condenser 6. is tilted forward and held by the lower shroud 16. As a result, the front surface of the condenser 6 is opened and leakage of outside air is blocked by the fan device 11 and the lower shroud 16, so that almost the entire amount of the introduced outside air flows through the condenser 6 and the radiator 5. Therefore, the fan device 11 as a ventilation resistor
Since it is not in the flow position, it is possible to simultaneously improve the heat exchange efficiency and reduce the amount of leaked outside air, and there is an advantage that the shroud 16 can also reduce the amount of leaked outside air even at low speeds.

(G) Effects of the invention As described above, according to the invention, when driving at low speeds, the fan and fan shroud are placed on the front of the condenser, but when driving at high speeds, these are folded forward to open the front of the condenser, and the fan device and the fan shroud are placed in front of the condenser when the fan is folded down. By blocking the leakage of the introduced outside air with the shroud placed in the front skirt, the running air can reliably pass through the condenser and radiator, which has the effect of increasing heat exchange efficiency. .

[Brief explanation of the drawing]

FIG. 1 is a sectional view of an engine cooling ventilation system according to an embodiment of the present invention, FIG. 2 is a bottom view of the same, and FIG. 3 is a sectional view of a conventional example. 5...Radiator, 6...Capacitor, 7,8
... Fan, 11 ... Fan device, 12 ... Hinge, 13 ... Actuator, 14 ... Wire,
15...Vehicle speed sensor, 16...Shroud.

Claims (1)

[Scope of utility model registration request] An engine cooling ventilation system characterized by having a forced ventilation fan device installed in a tiltable manner in front of a condenser arranged in parallel with a radiator, and a shroud covering the space between the lower edge of the condenser and the front skirt.