JPH0311118A - Intercooler cooling air introducing device for automobile - Google Patents

Abstract

PURPOSE:To smoothly guide outside air along the ventilating direction of an intercooler by press-attaching a main sealing member onto the periphery of the intercooler and installing an air introducing guide inside. CONSTITUTION:A main sealing member 15 made of elastic material such as rubber is arranged on the whole periphery of an air outlet 13, and fixed by rivets and bolts through a frame-shaped retainer. Further, an air introducing guide 8 made of elastic material such as rubber are arranged along three sides except the front part inside the main sealing member 15, and fixed onto the inner surface of a duct 11 for cooling an intercooler by rivets. Therefore, the leak of the outside air introduced onto the upper surface of the intercooler 6 through the duct 11 for cooling the intercooler on the reverse surface of an engine hood 2 is prevented by the seal of the part between the air outlet 13 by the main sealing member 15. Further, air stream can be guided smoothly by the air introducing guide 18.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to an intercooler cooling air system for an automobile in which outside air is introduced into an air-cooled ink cooler in an engine room through an intercooler cooling duct on the back of the engine hood. Regarding the introduction device.

BACKGROUND OF THE INVENTION In recent years, many supercharged automobile engines are equipped with intercoolers in order to cool intake air that has become hot due to compression by the supercharger. In the case of an air-cooled intercooler, there are considerable restrictions on where it can be installed in the engine room. There is also known a structure in which outside air is allowed to flow through the gap between the engine hood and the cover on its upper surface. (For example, see Utility Model Application Publication No. 59-13635, etc.).

Problems to be Solved by the Invention However, in the conventional configuration described above, a large bulging cover is attached to the center portion of the engine hood, which may impair the appearance quality of the automobile and is also unfavorable in terms of aerodynamic characteristics.

On the other hand, if the air-cooled intercooler is arranged above the engine without forming any opening in the engine hood, it is difficult to ensure sufficient ventilation of outside air to the intercooler. In particular, if the intercooler is placed at the top of the engine, it must be installed with the ventilation direction facing up and down due to the shape of the part, and even if a duct is installed in the engine room to introduce outside air, Sufficient cooling is difficult.

Means for Solving the Problems This invention provides an intercooler cooling duct that takes in outside air from the front of the vehicle body on the back side of the engine hood of an automobile, and a cooling duct that faces the top surface of the air-cooled intercooler placed at the top of the engine. - An intercooler cooling air introduction device for an automobile, comprising a substantially rectangular air outlet formed at the rear end of the intercooler cooling duct,
A main seal member is disposed around the entire circumference of the air outlet and is in pressure contact with the periphery of the intercooler, and the main seal member is located inside the main seal member and is attached to the periphery of the intercooler so as to surround it on three sides except the front. It is characterized by the provision of a wind guide made of an elastic body that presses against it.

Effect In the above configuration, outside air taken in from the front of the vehicle body is introduced toward the upper surface of the intercooler through the intercooler cooling duct on the back surface of the engine hood. At this time, the main seal member pressed against the periphery of the intercooler seals the air outlet and prevents leakage to the outside. Moreover, the air flow is smoothly guided by the air guide guide inside.

EXAMPLE Hereinafter, an example of the present invention will be described in detail based on the drawings.

FIG. 1 shows the front part of an automobile 1 equipped with an intercooler cooling air introduction device according to the present invention, in which an engine 4 is placed in a so-called horizontal position in an engine compartment 3 equipped with an engine hood 2 that can be opened and closed. An air-cooled intercooler 6h (installed) is installed on the top of the engine 4, in line with the rocker cover 5.
is approximately rectangular, and has an intake port and an intake outlet on the left and right sides, and is made up of a large number of flat tubes 6 and fins 6b (see Figure 3), and its ventilation direction is vertical, more specifically, slightly It is mounted tilted forward.

Then, an intercooler cover 7 made of synthetic resin is arranged so as to surround the outer periphery of the main body portion including the tube 6a etc.
is installed.

Further, a pair of guide portions 9 are provided on both left and right sides of the front grill 8 of the automobile 1 to guide outside air flowing in from the front upward.

On the other hand, hood outer 21. On the back side of the engine hood 2 consisting of the hood inner 2b and the insulator 10,
A flat intercooler cooling duct 11 made of synthetic resin is attached along the engine hood 2. This intercooler cooling duct 11 has a pair of bifurcated introduction parts 12 12 in the front part, and the opening I21 at the tip thereof matches the upper surface opening of the guide part 9 of the front grill 8 (second (see figure), and a substantially rectangular air outlet 13 is formed on the rear lower surface so as to face the upper surface of the intercooler 6. Further, as shown in FIGS. 3 and 4, the intercooler cooling duct 11 is provided with bolts at several locations as appropriate.
4 and rivets 17 to the engine hood 2.

In addition, Fig. 2 is a sectional view along the longitudinal direction of the vehicle body with the engine hood 2 closed, Fig. 3 is an enlarged view of the main parts, and Fig. 4 is a cross-sectional view of the intercooler 6 section along the longitudinal direction of the vehicle body. A cross section along the line is shown.

A main seal member 15 made of an elastic material such as rubber is disposed around the entire circumference of the air outlet 13, and is fixed with a rivet I7 and a bolt 14 via a frame-shaped retainer 16. (See Figures 3 and 4). Furthermore, inside the main seal member 15, an air guiding guide 18 made of an elastic material such as rubber is disposed along three sides excluding the front, and is also fixed to the inner surface of the intercooler cooling duct 11 with rivets 19. ing.

” As shown in FIG. 3, the bipedal main seal member 15 is
It consists of a relatively thick lip part 15a, a mounting base 15b fixed via a retainer 16, and a bent part 15c bent in an abbreviated shape that connects the two. A bent portion 15c extends toward the circumference, and a lip portion 15a abuts the upper surface of the intercooler cover 7 substantially perpendicularly. Here, the upper surface of the intercooler cover 7 is a sloped surface that becomes slightly higher toward the outer circumferential side. In addition, in the vehicle front side portion of the main seal member 15, the bent portion 15c has a substantially flat shape along the horizontal direction, and the lip 15a is small.

Further, as shown in FIG. 3, the air guide guide 18 includes a relatively thick lip portion 18a, a mounting base portion 18b fixed by a rivet 19, and a substantially dogleg-shaped bent portion connecting the two. main seal member 15
On the contrary, a bent portion 18c extends from the mounting base tab located on the inner circumferential side toward the outer circumferential side, and the lip portion 18a abuts the upper surface of the intercooler cover 7 substantially perpendicularly. Here, the contact position of the lip portion 182L is the main seal member 15.
Of course, it is located on the inner peripheral side than the lip portion 152L of the intercooler cover 7, and comes into contact with the slope of the bulged portion 7a formed one step higher along the inner peripheral edge of the intercooler cover 7. That is,
When the lip portion 15a is in the normal position, its tip is located slightly (Δh) lower than the upper surface of the inner peripheral edge of the intercooler cover 7, and the inside of the intercooler cover 7 due to vibrations of the engine 4, etc. Falling into the lap is prevented.

Now, in the above configuration, as shown by the arrows in each figure,
External air is drawn into the intercooler cooling duct Il through the guide part 9 by the ram pressure during running, flows through the duct Il, and is then sent from the air outlet 13 to the intercooler 6-
It is fed towards the top. Here, the space between the air outlet 13 and the intercooler 6 is sealed by a main seal member 15. When the main seal member 15 receives strong dynamic pressure from inside the intercooler cooling duct 11, it is pushed toward the outer periphery as shown by the imaginary line in FIG. Since the tip of the lip portion 15a is gradually lifted upward along the slope of the upper surface of the intercooler cover 7, the seal reaction force is further strengthened.

Therefore, even if the pressure difference with the outside becomes large during high-speed driving, etc., sealing can be performed reliably and air leakage is prevented.

The air flow is smoothly guided downward by the air guide 18 disposed on the inner peripheral side of the main seal member 15, and passes through the intercooler 6 in the vertical direction. That is, in the air guide guide 18, the lip portion 18a extends from the mounting base 18b toward the outer circumferential side and surrounds the intercooler 6 on three sides, so that unnecessary expansion of the passage cross-sectional area with respect to the flow is avoided, and the air outlet 13 periphery is In other words, air stagnation and generation of vortices near the main sole member 15 can be prevented. This reduces ventilation resistance and allows a large amount of air to be smoothly guided along the ventilation direction of the intercooler 6. In addition, when the above-mentioned wind guiding guide 18 is used alone,
Although the cross-sectional shape is such that it easily opens outward when dynamic pressure is applied from the inside, in the above configuration, the main seal member 15 that provides a firm seal is provided on the outer periphery of the main seal member 15. , the pressure difference between the inside and outside of the wind guiding guide 18 becomes extremely small, and excessive deformation does not occur.

In other words, even when the dynamic pressure is high, the airflow can be reliably guided.

Effects of the Invention As is clear from the above explanation, according to the intercooler cooling air introduction device according to the present invention, there is a main seal member that surrounds the air outlet of the intercooler cooling duct.
In addition, an air guiding guide made of elastic material is provided, allowing outside air to be guided smoothly along the ventilation direction of the intercooler placed at the top of the engine, allowing the intercooler to be sufficiently cooled without creating an opening in the engine hood. It becomes possible to do so. In particular, by providing the main seal member and the air guide guide in duplicate, the main seal member can be made into a shape that is more suitable for a strong seal, and the pressure difference between the inside and outside of the air guide guide can be kept small. Can prevent deformation,
Smooth airflow guidance and reliable sealing can be achieved at the same time.

[Brief explanation of drawings]

Fig. 11 is a perspective view of an embodiment of the present invention with the engine hood open, Fig. 2 is a sectional view taken along the longitudinal direction of the vehicle body with the engine hood closed, and Fig. 3 is the main part thereof. FIG. 4 is an enlarged sectional view of the main part along the left-right direction of the vehicle body. 2...Engine hood, 6...Intercooler, 1
DESCRIPTION OF SYMBOLS 1... Intercooler cooling duct, 15... Main seal member, 18... Air guide guide. 3 other people

Claims (1)

[Claims] (1) An intercooler cooling duct is installed on the back of the car's engine hood to take in outside air from the front of the car body, and a duct for cooling the intercooler is placed opposite the top surface of the air-cooled intercooler placed at the top of the engine. In an automobile intercooler cooling air introduction device in which a substantially rectangular air outlet is formed at the rear end of a duct, a main seal member that is in pressure contact with the periphery of the intercooler is disposed around the entire circumference of the air outlet. An intercooler cooling air for an automobile, characterized in that an air guiding guide made of an elastic body is provided inside the main seal member and in pressure contact with the periphery of the intercooler so as to surround it on three sides except the front side. Introduction device.