KR20040026974A - Under cover having air guide - Google Patents

Abstract

PURPOSE: A thermal damage-preventing apparatus with wake control of a cooling fan is provided to induce cooling wind toward a rear portion of an engine by forming an air guide formed to a side of an under cover. CONSTITUTION: An air guide(32) is formed to an under cover(30) covering a lower portion of an engine room(10) to induce air blasted by a cooling fan(20) to a thermal damage region(16) on a rear portion of an engine(14). Therein, air is induced to the thermal damage region by operating the cooling fan when temperature around the thermal damage region is over specific temperature. Therefore, thermal damage of peripheral devices of the engine is prevented.

Description

Thermal damage prevention device by cooling fan wake control {Under cover having air guide}

The present invention relates to a thermal damage prevention apparatus by the cooling fan wake control, and more particularly, a cooling fan having an air guide formed on one side of an under cover for guiding the cooling wind to the rear side of the engine which is unable to transmit the cooling wind and the running wind. The present invention relates to a device for preventing thermal damage by wake control.

In general, various devices mounted in the engine room are heated by the high heat transmitted from the engine. Therefore, in order to reduce the damage caused by heat radiated from the engine, the exhaust manifold and the cylinder head side of the engine are mounted with heat protectors for preventing the heat emitted from the engine from being directly transmitted to the apparatus around the engine.

In addition, a naka hole is formed in the middle of the under cover mounted at the lower part of the engine room so that the driving wind generated when the vehicle is driven flows into the engine periphery. That is, the driving wind flows through the Naka hole to cool the engine peripheral device.

The wind generated when the cooling fan is driven to increase the cooling efficiency of the cooling water passing through the radiator is blown around the engine to cool the engine parts.

However, when the engine is cooled by using the above-mentioned laca hole, cooling air can be introduced only when the vehicle is running, so there is no countermeasure against thermal deterioration at the stationary state such as stopping, and the vehicle traveling speed at high load and low speed driving. There was a problem that it is difficult to obtain as much cooling air volume as necessary to prevent thermal degradation.

In addition, even when the heat protector is used to reduce the thermal damage of the engine peripheral parts, the heat transfer to the engine peripheral device is not completely blocked. Therefore, in recent years, attempts are made to reduce the radiant heat by allowing the coolant to flow through the heat protector or by using a thermoelectric element. In this case, however, the configuration is complicated and the device cost increases.

In addition, the wind forced by the cooling fan and delivered to the front side of the engine is divided into up and down while hitting the front side of the engine flows the engine to the rear of the engine along the upper and lower surfaces. Therefore, some sections located at the rear of the engine have a problem in that they are not sufficiently cooled and subjected to thermal damage.

Therefore, the present invention has been made in order to solve the above problems, by the cooling fan wake control is formed on one side of the under cover an air guide for inducing the cooling wind to the rear side of the engine that can not transmit the cooling wind and running wind The purpose is to provide a thermal protection device.

The present invention as a means for achieving the above object,

In the structure in which an undercover is formed surrounding the lower part of the engine room, and a cooling fan for improving the cooling performance of the radiator is formed in the front side of the engine room,

An air guide is formed in the middle of the undercover covering the lower part of the engine room to induce blowing air from the cooling fan to the thermal sea area at the rear side of the engine. When the temperature around the thermal sea area rises above the set temperature, the cooling fan operates. Characterized in that configured to guide the blowing air to the thermal damage portion.

1 is a block diagram of a thermal damage prevention apparatus according to the present invention.

2 is a block diagram of an undercover according to the present invention.

3 is a view for explaining the air flow direction when there is no air guide according to the present invention.

※ Explanation of code for main part of drawing

10: engine room

12: radiator

14: engine

16: heat sea area

20: cooling fan

30: undercover

32: Air guide

Hereinafter, exemplary embodiments of the present invention will be described in detail with the accompanying drawings.

1 is a configuration diagram of a thermal damage prevention apparatus according to the present invention, Figure 2 is a configuration diagram of the undercover according to the present invention, Figure 3 is a view for explaining the air flow direction when there is no air guide according to the present invention to be.

Reference numeral 30 in the drawing indicates an undercover in which the air guide according to the present invention is formed, and reference numeral 20 designates a cooling fan.

A cooling fan 20 is formed at the front of the engine room 10 to improve the cooling performance of the radiator 12. The lower part of the engine room 10 protects the engine 14 and various components mounted around the engine. Undercover 30 is covered.

In addition, a plurality of Naka holes (not shown) are formed in the undercover 30 for the purpose of preventing thermal damage due to high heat radiated from the engine 14. The running wind flowing through the Naka Hall cools the thermal damage portion of the engine room 10.

By the way, looking at the flow direction of the air blown from the cooling fan 20, as shown in Figure 3, the rear side of the engine 14 generates a thermal damage zone 16 which is not locally induced cooling air.

The present invention is to ensure that the cooling air is forcedly blown from the cooling fan 20 to the thermal sea zone 16, the air of the under cover 30 located in the lower portion of the thermal sea zone 16 The air guide 32 for changing the flow direction is formed to be inclined. In particular, the air guide 32 is characterized in that it is integrally molded with the undercover 30.

And the cooling fan 20 is rotated according to the general cooling water temperature operating logic when the cooling water temperature of the engine 14 is high, and is set not to rotate when the cooling water temperature is low, the thermal damage zone 16 If the temperature measured in the above) is a predetermined temperature or more, the cooling fan 20 is set to operate even if the cooling water temperature is low.

That is, since the coolant temperature of the engine 14 is low and no cooling of the engine coolant is required, even when the cooling fan 20 is stopped, the engine room 10 is opened and the temperature measured in the region 16 is higher than the set temperature. If it is determined that the cooling fan 20 is set to be driven. Even in this case, when the temperature of the thermal sea zone 16 is lowered below the set temperature, the cooling fan 20 is set to be driven in accordance with the original cooling water temperature operation logic.

Therefore, in the present invention configured as described above, the cooling fan 20 is operated, so that the air generated in the cooling fan 20 hits the front of the engine toward the front of the engine 14, the front of the engine 14 The air flow divided in the vertical direction while hitting the flows along the upper and lower surfaces of the engine. In particular, in this process, the cooling air striking the air guide 32 is changed in the flow direction and flows to the rear thermal zone 16 at the rear of the engine 14, thereby cooling the parts and devices around the thermal zone 16.

According to the present invention configured as described above, when the temperature of the thermal damage zone located at the rear of the engine rises above the set temperature, cooling air generated by the cooling wind is also induced to the thermal damage zone of the engine, thereby preventing thermal damage of the engine peripheral device. There is a big advantage.

Claims (2)

In the structure in which an undercover is formed surrounding the lower part of the engine room, and a cooling fan for improving the cooling performance of the radiator is formed in the front side of the engine room, An air guide 32 is formed in the middle of the undercover 30 surrounding the lower part of the engine room 10 so that the blowing air by the cooling fan 20 is guided to the heat dissipation region 16 on the rear side of the engine 14. , The thermal damage prevention apparatus by the cooling fan wake control, characterized in that the cooling fan 20 is operated when the temperature around the thermal sea area 16 is higher than the set temperature to guide the blowing air to the thermal sea portion. The method of claim 1, The air guide 32 is a thermal damage prevention apparatus by the cooling fan wake control, characterized in that formed integrally with the under cover (30).