JP4857008B2 - Intercooler cooling duct device for internal combustion engine - Google Patents

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a duct device for guiding running air in a vehicle to the intercooler in order to cool an intercooler mounted on the upper surface of the internal combustion engine in an internal combustion engine mounted on the vehicle.

  Conventionally, this type of intercooler cooling duct apparatus is provided with an intercooler on the upper surface of an internal combustion engine mounted in an engine room of a vehicle as disclosed in FIG. By providing a ventilation duct between the upper surface of the vehicle and the lower surface of the engine hood that can be freely opened and closed with respect to the engine room, the traveling wind generated during forward traveling of the vehicle is directed toward the front of the vehicle in the duct. It introduce | transduces from the air intake port which opens, and is comprised so that it may guide | induced to the said intercooler.

In this conventional duct device, when the ventilation duct is attached to the intercooler side, the duct is directed downward to each of the front side portion and the rear side portion of the intercooler with respect to the traveling direction of the vehicle. A structure is adopted in which support rods are provided on the base plate and each of the support rods is detachably inserted downward into a receiving portion provided on the intercooler side.
Japanese Patent Laying-Open No. 2005-247028

  However, in the conventional duct device, the mounting structure of the ventilation duct on the intercooler side is a downward insertion into the receiving portion of each support rod provided on the duct, so that the mounting structure is simple. However, the insertion of the support rods into the receiving portions on the intercooler side of the support rods is performed from the upper side in a substantially straight downward direction. In other words, so that all the mounting holes can be seen, in other words, the opening dimension along the front-rear direction of the vehicle is set so that a member constituting the engine room, for example, a cowl top, does not cover the intercooler. If the engine room is to be enlarged, it must be made large. There is a cormorant problem.

  In addition, since all the support rods are inserted into the receiving portions in a downward direction substantially straight from above, it is possible to reliably prevent the displacement movement of the ventilation duct in the front-rear direction. However, it is not possible to prevent the ventilation duct from floating from the intercooler, and therefore, the duct is prevented from rising at both the front portion and the rear portion of the intercooler with respect to the traveling direction of the vehicle. Since the means must be provided, there is a problem that the structure is complicated by that amount, and the number of steps required for mounting and disassembling increases.

  An object of the present invention is to provide a duct device that solves these problems.

In order to achieve this technical problem, claim 1 of the present invention provides:
“An intercooler is arranged on the upper surface of the internal combustion engine mounted in the engine room in the front part of the vehicle, and the traveling wind in the vehicle is introduced into the upper surface of the intercooler from the air intake port in the front part and guided to the intercooler. In the duct, a front mechanism and a rear part of the duct with respect to the traveling direction of the vehicle are each supported by a support mechanism including a support bar and a receiving part into which the support bar is detachably inserted. In the cooling duct device configured to be detachably attached to the intercooler, the internal combustion engine or the vehicle,
The insertion direction of the support mechanism located at the front part of the duct among the support mechanisms is set downward, while the insertion direction of the support mechanism located at the rear part of the duct among the support mechanisms is directed rearward. Further, the front support rod in the support mechanism located at the front part of the duct among the support mechanisms is fixed to the duct so as to face downward, and the support mechanism is located at the rear part of the duct. The rear support rod in the support mechanism is fixed to the duct in a rearward direction, and in addition, the front support rod is positioned at a lower position than the rear support rod, so that the duct is installed at the front portion thereof. It was set as the structure which inclines forward and downward so that an air intake port may be located in a low site | part . "
It is characterized by that.

Further, claim 2 of the present invention is
“In the description of claim 1, a breakable fragile portion is provided on a rear support rod in a support mechanism located at the rear of the duct among the support mechanisms.”
It is characterized by that.

Furthermore, claim 3 of the present invention provides
“A structure according to claim 1 or 2, wherein the receiving portion in each of the support mechanisms is a grommet made of a soft elastic body, and a mounting hole into which the support rod in each of the support mechanisms is inserted is formed in the grommet. ”
It is characterized by that.

The attachment of the duct for ventilation to the intercooler according to claim 1 is performed by first positioning the rear support rod of the support mechanism located at the rear of the duct in the rear part by moving the duct backward. The support part in the support mechanism located in the front part is inserted into the support part in the support mechanism and then the front support bar in the support mechanism located in the front part of the duct is moved downward of the duct. By plugging in.

  In this attached state, the rearward movement of the duct can be prevented by the downward insertion of the support mechanism located at the front of the duct, while the lift on the rear side of the duct is Since the support mechanism located at the front part of the duct can be prevented from being inserted sideways toward the rear, the duct can be prevented from being lifted only by being provided at the front part of the duct. The structure can be simplified and the number of steps required for mounting and disassembling can be reduced. Further, an external force caused by running wind in the vehicle acts backward on the duct, so that the state of lateral insertion toward the rear can be maintained.

  In addition, since the mounting at the rear part of the duct is a lateral insertion toward the rear, the upper part of the rear part of the intercooler is the lower part of the member constituting the engine room in the vehicle, for example, the lower side of the cowl top. The rear part of the duct can be securely attached even if it is located in the position.

Thereby, since the opening dimension along the front-back direction in the engine room of the said vehicle can be made narrower than the said conventional case, the size reduction of the said engine room can be achieved.
In addition, a front support rod in a support mechanism located at the front of the duct among the support mechanisms is fixed to the duct facing downward, and a support mechanism located at the rear of the duct among the support mechanisms. Since the rear support bar in Fig. 5 is fixed to the duct in a rearward direction, the support bar can be inserted into the receiving part more easily than when the receiving part is provided on the duct side. There is an advantage that the installation can be further simplified.

In particular, according to the structure according to claim 2, in the event of an impact that deforms the engine hood for the engine hood for closing the opening portion of the engine room downwards, this impact, the rear transverse Since the fragile portion of the rear support rod breaks, there is an advantage that the impact on the engine hood can be effectively absorbed.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS.

  In this figure, reference numeral 1 denotes a vehicle body frame in a vehicle, and an engine room 2 having an openable and closable engine hood 3 is formed at the front of the vehicle body frame 1. A cylinder internal combustion engine 4 is mounted in a plan view with its crank axis oriented laterally with respect to the traveling direction of the vehicle, and an exhaust turbocharger attached to the internal combustion engine 4 is mounted on the upper surface of the internal combustion engine 4. An intercooler 5 for cooling the intake air compressed by a supercharger of a machine (not shown) is attached.

  In this case, a cowl top 6 that partitions the engine room 2 and the interior of the vehicle body frame 1 is configured to cover an upper portion of a rear portion of the intercooler 5, in other words, a rear portion of the intercooler 5. Is configured to sink under the cowl top 6.

  Reference numeral 7 denotes a ventilation duct disposed on the upper surface of the intercooler 5. The duct 7 has a flat box shape, and the traveling wind generated when the vehicle travels forward is generated from the duct 7. After being introduced from an air intake port 7a provided on the front side surface in the traveling direction, the air is guided to the intercooler 5 so that the intercooler 5 is air-cooled.

And when supporting the said duct 7 with respect to the said intercooler 5, the said duct 7 shall be made into the state inclined in front and downward so that the air intake port 7a provided in the front side surface may be located in a low site | part, In this state of inclining forward and downward, it is configured as described below.

That is, a pair of left and right rear support rods 8 and 9 are fixed to the rear portion of the duct 7 so as to protrude laterally rearward, while either the intercooler 5, the internal combustion engine 4 or the vehicle body frame 1 is fixed. The brackets 10 and 11 are fixed to portions corresponding to the rear support rods 8 and 9 facing both rear sides, and each of the brackets 10 and 11 has grommets 12 and 13 made of a soft elastic material such as rubber. , And the rear support rods 8 and 9 facing both rear sides are detachably inserted into the mounting holes 12a and 13a formed so as to penetrate the grommets 12 and 13, respectively. 7 is configured to support the rear portion.

That is, these rear support rods 8 and 9 and the grommets 12 and 13 which are receiving portions into which the rear support rods 8 and 9 are detachably inserted are connected to the rear portions of the duct 7 with the intercoolers 5 and 5. Insertion-type rear support mechanisms 14 and 15 that support either the internal combustion engine 4 or the vehicle body frame 1 are configured.

A pair of left and right front support rods 16 and 17 are fixed to the front portion of the duct 7 so as to protrude downward, while any one of the intercooler 5, the internal combustion engine 4 and the vehicle body frame 1 is attached. The brackets 18 and 19 are fixed to the portions corresponding to the downwardly facing front support bars 16 and 17, and grommets 20 and 21 made of a soft elastic body such as rubber are attached to the brackets 18 and 19, respectively. The ducts are inserted into the mounting holes 20a and 21a formed so as to penetrate through the grommets 20 and 21 by inserting the both downward-facing front support bars 16 and 17 in a detachable manner. 7 is configured to support the front portion.

In other words, these front support rods 16 and 17, in a filtrate of the grommet 20 and 21 that the front support rod 16, 17 is a receiving portion which is inserted detachably, the front in the duct 7, the intercooler 5, plug-in type front support mechanisms 22 and 23 for supporting either the internal combustion engine 4 or the vehicle body frame 1 are configured.

In this case, the rear support bar 9 in the other rear support mechanism 15 and the support bars 16 and 17 in both front support mechanisms 22 and 23 among the rear support mechanisms 14 and 15 break into the duct 7. The rear support bar 8 in one of the rear support mechanisms 14 of the rear support mechanisms 14, 15 is vertically connected to the duct 7 with respect to the rear support bar 8. When subjected to a relatively large impact force, it is configured to be fixed via a fragile portion 8a that is broken.
Then, by providing the front support mechanisms 22 and 23 at a position lower than the rear support mechanisms 14 and 15, the air inlet 7a provided on the front side of the duct 7 is positioned at a low position. In addition, it is configured to incline forward and downward.

In this configuration, the ventilation duct 7 is attached to the intercooler 5 as shown in FIG. 7. First, the rear support rods 8 and 9 in the rear support mechanisms 14 and 15 at the rear of the duct 7 are connected to the duct 7. of at rearward movement, and inserted into the mounting hole 12a, 13a in the grommet 12, 13 in the rear support mechanism 14 and 15, then, before the front portion of both the front support mechanism 22, 23 of the duct 7 This is done by inserting the part support rods 16 and 17 into the mounting holes 20a and 21a in the grommets 20 and 21 in the front support mechanisms 22 and 23 by the downward movement of the duct 7.

By configuring the grommets 12 and 13 as receiving portions in the rear support mechanisms 14 and 15 to have a light reflection such as whitening, or to have a light emitting property, The insertability of the rear support rods 8 and 9 into both the grommets 12 and 13 can be improved.

  In the above-described mounting state, the shift movement of the duct 7 in the front-rear direction can be prevented by the downward insertion of the front support mechanisms 22, 23, while the lifting at the rear part of the duct 7 can be prevented. This can be prevented by inserting the rear support mechanisms 14 and 15 in the lateral direction toward the rear.

The lifting at the front portion of the duct 7 is, for example, such that the retaining portions 16a and 17a are integrally provided at the front ends of the front support rods 16 and 17 in the front support mechanisms 22 and 23. It is possible to prevent more reliably with a very simple configuration.

In addition, when the engine hood 3 receives an impact that deforms the engine hood downward in the mounted state, the impact is transmitted to the duct 7, and both rear support mechanisms 14, 15, the fragile portion 8 a of the rear support rod 8 in one of the rear support mechanisms 14 is broken, so that the impact on the engine hood 3 can be absorbed.

  In the above-described embodiment, the support rod in each support mechanism is provided on the duct side, and the receiving portion into which the support rod is inserted is provided on the intercooler, the internal combustion engine, or the vehicle body frame side. The invention is not limited to this, and the support rod may be provided on the intercooler, the internal combustion engine, or the vehicle body frame side, and the receiving portion may be provided on the duct side.

  Further, the fragile portion in the rear support mechanism is not limited to being provided only in one rear support mechanism 14, but is provided for the other rear support mechanism 15 or provided for each of the rear support mechanisms. In addition, it can be configured to provide this weak part on the side of the receiving part.

It is a side view which shows embodiment of this invention. It is a top view of FIG. FIG. 3 is an enlarged sectional view taken along line III-III in FIG. 1. FIG. 4 is an enlarged sectional view taken along line IV-IV in FIG. 1. FIG. 5 is an enlarged sectional view taken along line VV in FIG. 1. FIG. 6 is an enlarged sectional view taken along line VI-VI in FIG. 1. It is a figure which shows the state which has attached.

DESCRIPTION OF SYMBOLS 1 Body frame 2 Engine room 3 Engine hood 4 Internal combustion engine 5 Intercooler 6 Cowl top 7 Duct for ventilation 7a Air intake port 8, 9 Rear support rod 10, 11 Bracket 12, 13 Grommet 12a, 13a Mounting hole 14, 15 Rear support mechanism 16, 17 Front support bar 18, 19 Bracket 20, 21 Grommet 20a, 21a Mounting hole 22, 23 Front support mechanism

Claims (3)

An intercooler is arranged on the upper surface of the internal combustion engine mounted in the engine room in the front part of the vehicle, and the driving wind in the vehicle is introduced into the intercooler on the upper surface of the intercooler and guided to the intercooler. A ventilation duct is provided, and a front mechanism and a rear part of the duct with respect to the traveling direction of the vehicle are each supported by a support mechanism including a support rod and a receiving portion into which the support rod is detachably inserted. In a cooling duct device configured to be detachably attached to an intercooler, an internal combustion engine or a vehicle,
The insertion direction of the support mechanism located at the front part of the duct among the support mechanisms is set downward, while the insertion direction of the support mechanism located at the rear part of the duct among the support mechanisms is directed rearward. Further, the front support rod in the support mechanism located at the front part of the duct among the support mechanisms is fixed to the duct so as to face downward, and the support mechanism is located at the rear part of the duct. The rear support rod in the support mechanism is fixed to the duct in a rearward direction, and in addition, the front support rod is positioned at a lower position than the rear support rod, so that the duct is installed at the front portion thereof. cooling duct instrumentation intercooler in an internal combustion engine, characterized in that it has a configuration that slopes Maekudari as air intake is positioned on the lower portion . 2. The duct device for cooling an intercooler in an internal combustion engine according to claim 1, wherein a breakable fragile portion is provided in a rear support rod of the support mechanism located at the rear portion of the duct among the support mechanisms. . 3. The structure according to claim 1, wherein the receiving portion in each support mechanism is a grommet made of a soft elastic body, and a mounting hole into which the support rod in each support mechanism is inserted is formed in the grommet. A duct device for cooling an intercooler in an internal combustion engine.

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