JP5732796B2 - Sub-radiator mounting structure - Google Patents

Description

  The present invention relates to a structure for mounting a sub-radiator, and more particularly to a technique for mounting a sub-radiator to a front portion of a vehicle body for cooling an electronic device mounted on a vehicle.

  In a hybrid vehicle having two power sources, an engine and an electric motor, an electronic device is cooled separately from the engine cooling radiator in order to cool the electric device for driving, the controller for controlling the electric motor, and the inverter. A sub-radiator is mounted (for example, described in Patent Document 1).

  In Patent Document 1, a so-called three-row arrangement structure in which an inverter radiator, an air conditioner capacitor, and an engine radiator are arranged in this order from the front of the vehicle to the rear of the vehicle.

Japanese Patent No. 4306136

  Usually, a radiator grille and an air intake port formed in the bumper fascia are formed in the front part of the vehicle body in order to take air into the motor room from the front of the vehicle. When the rear of the vehicle is viewed from the radiator grill and the air intake port, the air conditioner condenser and the inverter radiator disposed in front of the engine radiator can be seen.

  For this reason, although traveling wind directly hits the inverter radiator, flying objects such as stones that enter the front of the vehicle body from the radiator grille and the air intake may collide with the inverter radiator.

  Therefore, as a countermeasure against chipping for the inverter radiator, it is necessary to attach the chipping guard member to the inverter radiator at a position facing the radiator grill so that flying objects do not directly collide with the inverter radiator. However, using a chipping guard member leads to an increase in cost.

  The present invention has been made to solve the above-described problems, and provides a sub-radiator mounting structure that can suppress chipping of stones and the like to the sub-radiator without using a chipping guard member. With the goal.

According to the sub-radiator mounting structure of the present invention, the sub-radiator is disposed so as to overlap the bumper reinforcement at a position behind the bumper reinforcement at a position where it cannot be seen from the air intake port formed in the bumper fascia when viewed from the front of the vehicle. The bumper fascia is equipped with a fascia reinforcement corresponding to the same height as the bumper reinforcement, air intakes are provided on both the top and bottom sides of the fascia reinforcement, and the sub-radiator The bumper reinforcement and the bumper fascia are arranged so as to be substantially entirely hidden at the same vehicle height position .

  According to the sub-radiator mounting structure of the present invention, since the sub-radiator is disposed at a position that cannot be seen from the air intake formed in the bumper fascia when the vehicle is viewed from the front, the sub-radiator jumps into the front of the vehicle body from the air intake. It is possible to suppress flying objects such as stones coming in directly hitting the sub radiator. In addition, according to the present invention, the sub-radiator is disposed at the rear side of the bumper reinforcement in the vehicle front view so as to overlap the bumper reinforcement in front view, so that the bumper reinforcement functions as a chipping guard member. It is possible to suppress chipping of the stone splash collision.

FIG. 1 is a cross-sectional view of a front portion of a vehicle body on which a sub radiator, a capacitor, and a main radiator are arranged. FIG. 2 is a front view of the front portion of the vehicle body of FIG. 1 when viewed from the front of the vehicle toward the rear of the vehicle. FIG. 3 is a front view when the bumper fascia of FIG. 1 is removed and the front portion of the vehicle body is viewed from the front of the vehicle body toward the rear of the vehicle body. FIG. 4 shows a sub-radiator, (A) is a side view thereof, and (B) is a front view thereof.

  Hereinafter, a sub-radiator mounting structure to which the present invention is applied will be described in detail with reference to the drawings. The present embodiment is an example in which the present invention is applied to a hybrid vehicle having two power sources of an engine and an electric motor.

  1 is a cross-sectional view of a front portion of a vehicle body on which a sub radiator, a capacitor, and a main radiator are arranged. FIG. 2 is a front view of the front portion of the vehicle body in FIG. 1 as viewed from the front of the vehicle toward the rear of the vehicle. FIG. 4 is a front view of the front part of the vehicle body as viewed from the front of the vehicle body toward the rear of the vehicle body after removing the bumper fascia of FIG. 1, FIG. 4 shows the sub-radiator, (A) is its side view, and (B) is its front surface. FIG. 1 to 3, the arrow X represents the vehicle longitudinal direction, the arrow Y represents the vehicle width direction, and the arrow Z represents the vehicle height direction.

  As shown in FIGS. 1 to 3, a bumper reinforcement 1, a shock absorbing member 2, and a bumper fascia 3 constituting a front bumper are attached to the front portion of the vehicle. The bumper reinforcement 1 extends in the vehicle width direction Y as a vehicle body skeleton member and is attached to the front portion of the vehicle body. The impact absorbing member 2 is disposed between the bumper reinforcement 1 and the bumper fascia 3 and absorbs and relaxes the impact load input to the bumper fascia 3. The bumper fascia 3 is an exterior part that covers the front surface of the bumper reinforcement 1 and forms the shape of the front end portion of the vehicle body.

  The bumper fascia 3 has air intake for taking air into the motor room 4 at the upper and lower parts of the vehicle corresponding to the same height position as the bumper reinforcement 1 (hereinafter referred to as the facia reinforcement corresponding part 3a). The mouths 5 and 6 are formed. A front grille 7 is attached to an air intake 5 formed above the vehicle across the facet reinforcement portion 3a. On the other hand, a front under grille 8 is attached to an air intake 6 formed on the lower side of the vehicle with the facia reinforcement corresponding part 3a interposed therebetween. As a result, air is taken into the motor room 4 from both the air intakes 5 and 6.

  In the front part of the vehicle, a sub-radiator 9 that cools the cooling water for electronic devices from the front of the vehicle to the rear of the vehicle, a condenser 10 that cools the refrigerant for the air conditioner, and a main radiator 11 that cools the cooling water for the engine are arranged in this order. Are arranged opposite to each other. The sub-radiator 9, the capacitor 10 and the main radiator 11 are all attached to the radiator core support 12.

  In the hybrid vehicle, in addition to the main radiator 11 for cooling the engine coolant flowing through the engine for a normal internal combustion engine, it is provided around an electronic device such as a traveling electric motor, a controller for controlling the electric motor, and an inverter. The sub-radiator 9 for cooling the cooling water for electronic equipment flowing through the water jacket is required. Further, in the hybrid vehicle, only the electric motor operates when the vehicle starts to travel (both the electric motor and the engine may operate), so that the motor room is opened from both the air intakes 5 and 6 when the vehicle is running at low speed. The amount of air flowing into 4 is reduced. Therefore, cooling air is generated by the cooling fan 13 disposed on the back side of the main radiator 11.

  As shown in FIG. 4, the sub-radiator 9 includes a radiator core 16 formed by alternately stacking a plurality of tubes 14 and cooling fins 15 through which electronic device cooling water flows, and both ends of the radiator core 16 in the vehicle width direction. And upper and lower reinforcements 19 and 20 attached to the top and bottom of the radiator core 16 in the stacking direction.

  The sub-radiator 9 is located at a position invisible from both the air intakes 5 and 6 formed in the bumper fascia 3 when viewed from the front of the vehicle (when viewed from the front of the vehicle) and at the rear of the bumper reinforcement 1. Are disposed on the bumper reinforcement 1. More specifically, the sub-radiator 9 is disposed at the same vehicle height position as the bumper reinforcement 1 so that the entire rear surface of the bumper reinforcement 1 and the bumper fascia 3 is covered (hidden).

  The fact that substantially the entire sub-radiator 9 is covered with the bumper reinforcement 1 and the bumper fascia 3 means that at least the entire tubes 14 and cooling fins 15 that are radiator components are hidden. Therefore, as shown in FIGS. 2 and 3, even when the lower reinforcement 20, which is a radiator component, is slightly exposed from the bumper reinforcement 1 and the bumper facer 3, substantially the entire sub-radiator 9 is substantially the bumper reinforcement. 1 and the bumper fascia 3 are included in the meaning.

  The sub-radiator 9 is diverted from the radiator core of the main radiator 11 that is used for engine cooling in order to reduce manufacturing costs. Since the main radiator 11 is disposed on the back surface of the capacitor 10, no countermeasure against chipping such as thickening the tube itself is taken. Therefore, when the sub-radiator 9 using the radiator core used for the main radiator 11 is disposed in front of the condenser 10 so that it can be seen from both the air intakes 5 and 6, the sub-radiator 9 is made of stone splashes or the like. The tube 14 may be damaged.

  However, in the present embodiment, the entire tube 14 and the cooling fin 15 are covered with the bumper reinforcement 1 and the bumper fascia 3 so as not to be seen from both the air intakes 5 and 6, and thus are not affected by chipping. Further, even if the lower reinforcement 20 as a radiator component is exposed from the air intake 6 below the vehicle, there is no fear of water leakage because no cooling water flows through the lower reinforcement 20, and the lower Reinforce itself is not strong enough to be damaged by stone splashes.

  Further, the sub radiator 9 is disposed so as to overlap with the cooling fan 13 provided on the rear side of the main radiator 11 and the cooling fan 13 when viewed from the front of the vehicle. That is, when the rear of the vehicle is viewed from the front of the vehicle, the projected portion of the sub radiator 9 overlaps the cooling fan 13 on the back surface of the sub radiator 9. For this reason, the cooling air generated by the wind drawn by the cooling fan 13 toward the rear of the vehicle is allowed to act on the entire sub-radiator 9 to be cooled by exchanging heat with the cooling water for electronic equipment.

  In the heat exchanger composed of the sub radiator 9, the condenser 10 and the main radiator 11 arranged as described above, an experimental result was obtained that the air permeability of each heat exchanger was higher than that of the conventional structure. The air permeability is a value obtained by dividing the average wind speed (m / sec) when passing through the sub-radiator 9, the condenser 10 and the main radiator 11 by the speed when traveling at a speed of 60 km / h.

  According to the sub-radiator mounting structure of the present embodiment, the sub-radiator 9 is disposed at a position that cannot be seen from the air intakes 5 and 6 formed in the bumper fascia 3 when the vehicle is viewed from the front. Thus, it is possible to suppress (avoid) that a flying object such as a stone that jumps into the front portion of the vehicle body directly hits the sub radiator 9 from 6. Further, according to the present embodiment, the sub-radiator 9 is disposed at the vehicle rear position of the bumper reinforcement 1 so as to overlap the bumper reinforcement 1 when viewed from the front of the vehicle, so that the bumper reinforcement 1 serves as a chipping guard member. It functions to avoid the stone splash collision to the sub radiator 9. Therefore, in this embodiment, the chipping guard member is not required, and the cost can be reduced. Further, since the chipping guard member is not visible from the air intake ports 5 and 6, the appearance is improved.

  Further, according to the sub-radiator mounting structure of the present embodiment, the sub-radiator 9 is disposed so as to overlap the cooling fan 13 provided on the rear side of the main radiator 11 and the cooling fan 13 when viewed from the front of the vehicle. Compared with the case where the relative position of the sub radiator 9 and the cooling fan 13 is shifted, the cooling air generated by the wind drawn rearward by the cooling fan 13 is applied to the sub radiator 9 as a whole. Can do. As a result, the heated electronic device cooling water can be cooled by heat exchange with the cooling fan 13.

  Further, according to the sub-radiator mounting structure of the present embodiment, the sub-radiator 9 is covered with the bumper fascia 3 over the entire tube 14 through which the cooling water for electronic equipment, which is a radiator component, flows. In this case, it is possible to avoid hitting the bumper fascia 3 and hitting the tube 14 with flying objects such as stones. In particular, since the cooling water for electronic equipment flows through the tube 14, damage to the tube 14 can be prevented.

  In the embodiment described above, the two air intakes 5 and 6 are formed in the bumper fascia 3, but the number of the air intakes 5 and 6 may be one. In short, the sub-radiator 9 cannot be seen from the air intake when viewed from the front of the vehicle from the front of the vehicle, and the sub-radiator 9 is disposed on the bumper reinforcement 1 in front of the bumper reinforcement 1 when viewed from the front. It only has to be done.

  The present invention can be used for a vehicle in which a sub-radiator is attached to the front portion of the vehicle body in addition to the main radiator.

DESCRIPTION OF SYMBOLS 1 ... Bumper reinforcement 2 ... Shock absorption member 3 ... Bumper fascia 4 ... Motor room 5, 6 ... Air intake 9 ... Sub radiator 10 ... Capacitor 11 ... Main radiator 12 ... Radiator core support 13 ... Cooling fan 14 ... Tube 15 ... Cooling fins 16 ... Radiator core 20 ... Lower reinforcement

Claims (3)

A sub-radiator that cools the cooling water for electronic devices from the front of the vehicle to the rear of the vehicle, a condenser that cools the refrigerant for the air conditioner, and a main radiator that cools the cooling water for the engine are arranged to face each other in this order.
A sub-radiator mounting structure in which the sub-radiator is disposed in a position invisible from an air intake port formed in the bumper fascia in a front view of the vehicle and disposed on the bumper reinforcement at a rear position of the bumper reinforcement.
The bumper fascia includes a fascia reinforcement corresponding part corresponding to the same height position as the bumper reinforcement,
The air intakes are provided on both upper and lower sides of the Facial Reinforce corresponding part ,
The sub-radiator is mounted at the same vehicle height as the bumper reinforcement and so as to be substantially entirely hidden behind the bumper reinforcement and the bumper fascia. Construction. The sub-radiator mounting structure according to claim 1,
The sub-radiator mounting structure, wherein the sub-radiator is arranged so as to overlap with a cooling fan provided at the rear of the main radiator in a vehicle front view. A mounting structure for a sub-radiator according to claim 1 or claim 2,
The sub-radiator has a sub-radiator mounting structure in which the entire tube through which cooling water for electronic equipment, which is a radiator component, flows is covered with the bumper fascia.

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