CN107813698B

CN107813698B - Cooling device for vehicle

Info

Publication number: CN107813698B
Application number: CN201710818796.5A
Authority: CN
Inventors: 福重贵之; 町野厚己
Original assignee: Suzuki Motor Corp
Current assignee: Suzuki Motor Corp
Priority date: 2016-09-14
Filing date: 2017-09-12
Publication date: 2020-05-29
Anticipated expiration: 2037-09-12
Also published as: CN107813698A; DE102017214489B4; FR3055834A1; FR3055834B1; DE102017214489A1; JP2018043636A; JP6504140B2

Abstract

Provided is a cooling device for a vehicle, which is not affected by the shape of the upper end of a front grille and can improve the cooling performance of an air suction device arranged in an engine room. The front grill (12) has a lower front inclined portion (12A) on the upper end surface thereof. An air guide plate (40) having a rear downward inclined portion (43) is provided above the radiator (31) and below the engine hood (15). The rear lower inclined portion is inclined such that the extended surface thereof faces the direction of a throttle body (26), an intake pipe (27), and an intake manifold (28) which are lower portions of the intake pipe. The air guide plate (40) is mounted above the radiator on the inner side surface of the engine hood. The engine cover has an inner panel (16) on the inner side thereof, and the air guide panel has: a front edge part (41) which extends downwards at the front edge and is fixed at the front part of the inner plate; and a leg (44) that extends upward from the upper surface of the rear lower inclined section (43) and is fixed to the inner panel.

Description

Cooling device for vehicle

Technical Field

The present invention relates to a cooling device for a vehicle that cools an intake device and the like in an engine room.

Background

As a cooling device for a vehicle such as an automobile, a cooling device described in patent document 1 is known. Patent document 1 discloses a device for cooling an engine room by introducing outside air into the engine room of a vehicle, the device including a duct having one end opening between an engine and an instrument panel and the other end opening to the outside of the vehicle, and a fan for sending the outside air to the engine room side being provided at an appropriate position of the duct. More specifically, patent document 1 discloses that a duct is formed in the rear surface of an engine hood, and outside air is introduced into the duct from an intake port in the front portion of a vehicle body.

Documents of the prior art

Patent document

Patent document 1: JP 3-50523A

Disclosure of Invention

Problems to be solved by the invention

However, the conventional cooling device for a vehicle has a problem that the hot air flowing out from the radiator cannot flow to the periphery of the component to be cooled, although the components in the engine room can be cooled by the outside air flowing out from the duct.

In addition, in the conventional cooling device for a vehicle, when the front grille is designed to have the lower front inclined portion at the upper end thereof, the outside air flowing into the gap between the hood and the lower front inclined portion flows rearward along the lower surface of the hood.

Therefore, the conventional cooling device for a vehicle has the following problems: the flow direction of the hot air passing through the heat sink cannot be changed by the outside air flowing out from the duct, and the hot air passing through the heat sink flows into the periphery of the component to be cooled. Further, the conventional cooling device for a vehicle has the following problems: the shape of the upper end of the front grill is limited so as not to allow hot air passing through the radiator to flow into the periphery of the component to be cooled.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a cooling device for a vehicle, which can improve the cooling performance of an intake device disposed in an engine room without being affected by the shape of the upper end of a front grill.

Means for solving the problems

The present invention is a cooling device for a vehicle, including: a front grille disposed at a front portion of a vehicle and covering an engine room at a front portion of the vehicle from a front side; a radiator having a main body portion extending in a vehicle vertical direction, the radiator being disposed behind the front grille in the engine room, an upper end of the main body portion being lower than an upper end of the front grille; an engine disposed in the engine room, an output shaft of the engine facing in a vehicle width direction; an intake device having an intake pipe for supplying air taken in from a front portion of the engine room to the engine, a part of the intake pipe being disposed in a space behind the radiator; and an engine cover that covers an upper portion of the front grille and an upper portion of the engine room, and is disposed with a gap formed between the engine cover and an upper end of the front grille, and traveling wind is introduced into the engine room from a vehicle front side through the gap, wherein the front grille has a front lower inclined portion on an upper end surface thereof, a baffle plate having a rear lower inclined portion is provided above the radiator and below the engine cover, and the rear lower inclined portion is inclined such that an extension surface thereof faces a direction of a lower portion of the intake pipe disposed in a rear space of the radiator.

Effects of the invention

According to the present invention, the cooling performance of the intake device disposed in the engine room can be improved without being affected by the shape of the upper end of the front grill.

Drawings

Fig. 1 is a plan view of an engine room of a vehicle in which a cooling device for a vehicle according to an embodiment of the present invention is mounted.

Fig. 2 is a sectional view taken along line II-II of fig. 1.

Fig. 3 is a front view of a vehicle mounted with a cooling device for a vehicle according to an embodiment of the present invention.

Fig. 4 is a left side view of an engine room of a vehicle mounted with a cooling device for a vehicle according to an embodiment of the present invention.

Fig. 5 is a perspective view of an air deflector of the cooling device for a vehicle according to the embodiment of the present invention.

Fig. 6 is a front view of an air deflector of the cooling device for a vehicle according to the embodiment of the present invention.

Fig. 7 is a plan view of an air deflector of the cooling device for a vehicle according to the embodiment of the present invention.

Fig. 8 is a left side view of the air guide plate of the cooling device for a vehicle according to the embodiment of the present invention.

Description of the reference numerals

1: vehicle, 12: front grille, 12A: lower front slope portion, 13: gap, 14: engine room, 15: engine cover, 16: inner plate, 16A: frame portion, 21: engine, 21A: output shaft, 22: intake port (intake pipe), 23: intake duct (intake pipe), 24: air cleaner (intake pipe), 25: air cleaner outlet hose (intake pipe), 26: throttle body (intake pipe), 27: intake pipe (intake pipe), 28: intake manifold (intake pipe), 29: resonator, 29B: rear lower inclined portion (2 nd inclined portion), 30: getter device, 31: heat sink, 31A: main body portion, 40: air deflector, 41: front edge portion, 43: rear lower slope (1 st slope), 44: and (4) a leg part.

Detailed Description

A cooling device for a vehicle according to an embodiment of the present invention includes: a front grille disposed at a front portion of a vehicle and covering an engine room at a front portion of the vehicle from a front side; a radiator having a main body portion extending in a vehicle vertical direction, the radiator being disposed behind a front grille of an engine room, an upper end of the main body portion being lower than an upper end of the front grille; an engine disposed in an engine compartment, an output shaft of which faces a vehicle width direction; an intake device having an intake pipe for supplying air taken in from a front portion of an engine room to an engine, a part of the intake pipe being disposed in a space behind a radiator; and an engine cover covering the upper side of the front grille and the upper side of the engine room, and arranged with a gap between the upper end of the front grille and the engine room, and the traveling wind is introduced from the front of the vehicle to the engine room through the gap. Thus, the cooling device for a vehicle according to the embodiment of the present invention can improve the cooling performance of the intake device disposed in the engine room without being affected by the shape of the upper end of the front grille.

[ examples ]

Hereinafter, a cooling device for a vehicle according to an embodiment of the present invention will be described with reference to the drawings. Fig. 1 to 8 are views showing a cooling device for a vehicle according to an embodiment of the present invention. In fig. 1 to 8, directions indicated by up, down, right, and left are directions as viewed from the driver's seat.

First, the configuration will be explained. In fig. 1, 2, 3, and 4, a vehicle 1 includes a vehicle body 10, and the vehicle body 10 includes an engine room 14 in a front portion of the vehicle 1. The engine room 14 is covered from the rear and the sides by the dashboard 10A and the left and right fenders 10B of the vehicle body 10.

A front bumper 11 and a front grille 12 are provided at a lower portion and an upper portion of a front end portion of the vehicle body 10, respectively. The front bumper 11 and the front grille 12 are disposed in the front of the vehicle 1, and cover the engine room 14 from the front.

In the present embodiment, the front bumper 11 and the front grille 12 are integrally formed. The front bumper 11 is provided below the front end of the vehicle 1 across both ends in the vehicle width direction. The front grille 12 is disposed above the front bumper 11 and between left and right headlights 18 at the front end of the vehicle 1.

The front bumper 11 is provided with an outside air intake port 11A, and traveling wind from the front of the vehicle is introduced into the engine room 14 through the outside air intake port 11A. The front grille 12 is provided with an outside air intake port 12B, and traveling wind from the front of the vehicle is introduced into the engine room 14 through the outside air intake port 12B.

The vehicle 1 includes an engine hood 15, and the engine hood 15 covers an upper portion of the front grille 12 and an upper portion of the engine room 14, and is disposed with a gap 13 formed between the engine hood 15 and an upper end of the front grille 12. Traveling wind from the front of the vehicle is introduced into the engine room 14 through the gap 13.

Engine compartment 14 is provided with engine 21, transmission 32, and radiator 31.

The engine 21 is disposed laterally in the engine compartment 14 at a position to the right of the center portion in the vehicle width direction so that the output shaft 21A faces the vehicle width direction. The transmission 32 is disposed in the engine room 14 to the left of the center in the vehicle width direction, and is connected to the left end portion of the engine 21.

The heat sink 31 includes a body 31A. The body portion 31A includes a rectangular cooler (radiator) extending in the vehicle vertical direction, and is equipped with a cooling fan 31B. A coolant for cooling the engine 21 flows through the body 31A. The radiator 31 cools the coolant by exchanging heat between the outside air taken in from the outside air intake port 11A and the coolant, and emits heat to the engine compartment 14.

The radiator 31 is disposed behind the front grille 12 of the engine room 14 such that the upper end of the main body portion 31A is lower than the upper end of the front grille 12. More specifically, the radiator 31 is disposed behind the outside air intake port 11A of the front bumper 11 and the outside air intake port 12B of the front grille 12.

The cooling fan 31B is provided behind the main body 31A, and draws in outside air from the front of the main body 31A and discharges the outside air passing through the main body 31A into the engine room 14.

A lock mechanism 17 of the hood 15 is provided above the body portion 31A, and the lock mechanism 17 of the hood 15 engages with a striker disposed at a front end portion of the hood 15 to hold the hood 15 in a closed state.

An intake device 30 is provided in the engine compartment 14, and the intake device 30 includes an intake port 22, an intake duct 23, an air cleaner 24, an air cleaner outlet hose 25, a throttle body 26, an intake pipe 27, and an intake manifold 28.

The intake port 22 is formed in a box shape that opens forward, is disposed in an upper portion of a front portion of the engine compartment 14, and is disposed at a position to the right of a center in the vehicle width direction. The intake port 22 is disposed behind the gap 13, and takes in traveling wind through the gap 13. The intake duct 23 is connected to the left side surface of the intake port 22, extends leftward from the intake port 22, and extends rearward.

An air cleaner 24 is disposed above the rear portion of the engine 21, and an intake duct 23 is connected to the front surface of the air cleaner 24. The air cleaner outlet hose 25 is connected to the left side surface of the air cleaner 24, extends leftward from the air cleaner 24, and then extends downward.

The throttle body 26 is connected to the downstream end of the air cleaner outlet hose 25 in the intake air flow direction and extends downward. The intake pipe 27 is connected to a lower end of the throttle body 26, extends downward, and then extends rightward to be connected to the intake manifold 28. The intake manifold 28 is disposed behind the engine 21 and below the air cleaner 24, and is connected to an unillustrated intake port in the rear of the engine 21.

The intake port 22, the intake duct 23, the air cleaner 24, the air cleaner outlet hose 25, the throttle body 26, the intake pipe 27, and the intake manifold 28 constitute an intake pipe of the present invention, and supply the air taken in from the front of the engine compartment 14 through the intake port 22 to the engine 21.

Of these components constituting the intake pipe, the air cleaner outlet hose 25, the throttle body 26, the intake pipe 27, and the intake manifold 28 are disposed in a space behind the radiator 31, and constitute a part of the intake pipe of the present invention.

In the present embodiment, the intake manifold 28 is connected to the rear portion of the engine 21, but when the engine 21 is of the rear exhaust type and the intake port is disposed in the front portion of the engine 21, the intake manifold 28 is connected to the front portion of the engine 21.

A resonator 29 is provided on the left side of the air intake duct 23 of the engine room 14 and in front of the air cleaner outlet hose 25. In other words, the resonator 29 is disposed forward of the upper portion of the intake pipe.

The resonator 29 is formed in a box shape as a whole and is disposed in an upper portion of a space behind the heat sink 31. The resonator 29 is connected to the intake duct 23 by a connecting pipe 29A, and reduces the intake noise generated in the intake duct 23 by resonance.

In the present embodiment, an inclined front portion 12A is formed on the upper end surface of the front grill 12, and the inclined front portion 12A is inclined so as to descend in the forward direction. The lower front inclined portion 12A is provided for design and functional reasons.

Specifically, the lower-front inclined portion 12A is provided for design reasons such as making it difficult to see the depth of the gap 13 from above in front of the vehicle 1. The lower front inclined portion 12A is provided for the following functional reasons: the traveling wind flowing upward while hitting the front grille 12 below the gap 13 is smoothly guided to the gap 13, and is collected in the gap 13. The air guide plate 40 is disposed above the radiator 31 and below the engine cover 15.

In fig. 5, 6, 7, and 8, the air guide plate 40 includes: a front edge portion 41 extending downward from the front edge of the air guide plate 40, and a horizontal plate portion 42 extending horizontally rearward from the upper end of the front edge portion 41; and a rear lower inclined portion 43 extending obliquely downward to the rear side from the rear edge of the horizontal plate portion 42.

The air guide plate 40 has 2 leg portions 44, and the leg portions 44 extend upward from the upper surface of the rear lower inclined portion 43. The upper ends of the 2 leg portions 44 are connected by a connecting portion 45. Fitting holes 44A are provided at the upper end portions of the 2 leg portions 44, respectively. The front edge 41 of the air guide plate 40 is provided with 4 fitting holes 41A at predetermined intervals.

The air guide plate 40 is fastened to the inner surface of the hood 15 above the radiator 31 by unillustrated screws that pass through the mounting holes 44A of the leg portions 44 and the mounting holes 41A of the front edge portion 41.

In fig. 1, 2, 3, and 4, the extension surface of the rear lower inclined portion 43 faces the direction of the throttle body 26, the intake pipe 27, and the intake manifold 28. That is, the rear lower inclined portion 43 is inclined such that the extended surface thereof faces the throttle body 26, the intake pipe 27, and the intake manifold 28, which are the lower portions of the intake pipes disposed in the rear space of the radiator 31.

The engine cover 15 has an inner panel 16 on its inner side. A frame portion 16A is disposed at a front portion of the inner panel 16, and the frame portion 16A extends in the vehicle width direction and projects downward. The frame portion 16A is formed in a bag shape and bulges downward at the front portion of the engine cover 15.

The front edge portion 41 of the air guide plate 40 is fixed to the inner panel 16 on the front side of the frame portion 16A. The leg portion 44 of the air guide plate 40 is fixed to the inner panel 16 on the rear side of the frame portion 16A.

The leg portion 44 is fixed to the inner panel 16 by a screw, not shown, penetrating the attachment hole 44A. The front edge portion 41 is fixed to the front portion of the inner panel 16 by a screw, not shown, penetrating through the attachment hole 41A.

By attaching the air guide plate 40 to the lower surface of the inner panel 16 of the hood 15 in this way, the air guide plate 40 can be fixed while preventing the air guide plate 40 from interfering with components arranged near the upper surface of the radiator 31.

In addition, in the case where the air deflector 40 can be attached to the upper ends of the radiator 31 and the front grill 12, the air deflector 40 may be attached to the upper ends of the radiator 31 and the front grill 12. In this case, a fitting member corresponding to the leg portion 44 is provided on the lower surface of the air deflection plate 40, and the air deflection plate 40 is fitted to the radiator 31 and the upper end of the front grill 12 via the fitting member.

The bottom surface of the resonator 29 is disposed at a position lower than the upper end of the front grill 12. A planar rear downward inclined portion 29B is provided on the bottom surface of the resonator 29, and the rear downward inclined portion 29B is inclined rearward and downward.

When the rear lower inclined portion 43 of the air deflector 40 is the 1 st inclined portion and the rear lower inclined portion 29B of the resonator 29 is the 2 nd inclined portion, the rear lower inclined portion 29B as the 2 nd inclined portion is disposed at a position above a surface formed toward the vehicle rear side of the rear lower inclined portion 43 as the 1 st inclined portion and in the vicinity of the extension surface.

Next, the operation will be explained. In fig. 4, the outside air taken into the outside

air intake ports

11A and 12B flows horizontally into the radiator 31 as indicated by arrows 52. The outside air warmed by the radiator 31 hits the front surface of the transmission 32 in a state where buoyancy increases due to the warming.

Then, the buoyancy of the outside air passing through the radiator 31 increases and hits the front surface of the transmission 32, and the air changes its direction and flows obliquely upward toward the rear side where the air cleaner outlet hose 25, the throttle body 26, the intake pipe 27, and the intake manifold 28 are located, as indicated by an arrow 53.

In the cooling device for a vehicle of the present embodiment, the front grille 12 has the lower-front inclined portion 12A on the upper end surface thereof. Therefore, the traveling wind introduced into the gap 13 between the front grille 12 and the hood 15 flows diagonally upward and rearward along the lower inclined portion 12A above the front grille 12 as indicated by an arrow 56.

In the cooling device for a vehicle according to the present embodiment, the air guide plate 40 having the rear downward inclined portion 43 is provided above the radiator 31 and below the hood 15. Therefore, the outside air flowing obliquely upward to the rear side along the front lower inclined portion 12A of the front grille 12 can be turned obliquely downward to the rear side by the rear lower inclined portion 43 of the air deflection plate 40 as indicated by an arrow 57.

In the cooling device for a vehicle according to the present embodiment, the rear lower inclined portion 43 of the air deflector 40 is inclined such that the extended surface thereof faces the direction of the throttle body 26, the intake pipe 27, and the intake manifold 28, which are the lower portion of the intake pipe. Therefore, as indicated by an arrow 58, the traveling wind can be guided to the periphery of the intake pipe such as the throttle body 26, the intake pipe 27, and the intake manifold 28, and the intake pipe can be cooled.

The hot air discharged from the radiator 31 toward the vehicle rear as indicated by an arrow 53 can be diverted downward by the intake pipe such as the throttle body 26, the intake pipe 27, and the intake manifold 28 as indicated by an arrow 54 by the flow of the traveling wind as indicated by an arrow 57, and can be discharged to the outside from below the engine room 14.

In the present embodiment, even when the front grille 12 is designed to have the lower front inclined portion 12A on the upper end surface thereof, the traveling wind can be guided to the periphery of the intake pipe such as the throttle body 26, the intake pipe 27, and the intake manifold 28 to cool the intake pipe.

As a result, the cooling performance of the intake device 30 disposed in the engine room 14 can be improved without being affected by the shape of the upper end of the front grille 12.

In the cooling device for a vehicle of the present embodiment, the air guide plate 40 is mounted on the inner surface of the hood 15 above the radiator 31.

According to this configuration, even when it is difficult to attach the air guide plate 40 to the upper end surface of the radiator 31 or the like due to interference with other members, the air guide plate 40 can be supported on the inner surface of the hood 15.

In the cooling device for a vehicle of the present embodiment, the hood 15 has the inner panel 16 on the inner surface thereof, and the air guide plate 40 has: a front edge portion 41 that extends downward from the front edge of the air guide plate 40 and is fixed to the front portion of the inner panel 16; and a leg portion 44 extending upward from the upper surface of the rear lower inclined portion 43 and fixed to the inner panel 16.

According to this configuration, the rear lower inclined portion 43 that receives the pressure of the traveling wind can be fixed to the inner panel 16 of the hood 15 by the leg portion 44 extending upward from the upper side of the rear lower inclined portion 43, and the deformation of the air deflector 40 due to the pressure of the traveling wind can be suppressed.

In the vehicle cooling device of the present embodiment, a frame portion 16A that extends in the vehicle width direction and protrudes downward is disposed at the front portion of the inner panel 16, the front edge portion 41 is fixed to the inner panel 16 at the front side of the frame portion 16A, and the leg portion 44 is fixed to the inner panel 16 at the rear side of the frame portion 16A.

According to this configuration, the air guide plate 40 can be disposed at an appropriate position with respect to the lower front inclined portion 12A of the front grill 12 without being affected by the frame portion 16A of the inner panel 16.

In the cooling device for a vehicle of the present embodiment, the resonator 29 is disposed forward of the upper portions of the throttle body 26, the intake pipe 27, and the intake manifold 28, the bottom surface of the resonator 29 is disposed at a position lower than the upper end of the front grille 12, and the rear downward inclined portion 29B is provided on the bottom surface of the resonator 29.

When the rear lower inclined portion 43 of the air deflector 40 is the 1 st inclined portion and the rear lower inclined portion 29B of the resonator 29 is the 2 nd inclined portion, the rear lower inclined portion 29B as the 2 nd inclined portion is disposed at a position above a surface formed by extending the rear lower inclined portion 43 as the 1 st inclined portion toward the vehicle rear side.

According to this configuration, the traveling wind flowing from the rear lower inclined portion 43 of the air deflector 40 as the 1 st inclined portion toward the vehicle rear can be caused to flow toward the rear lower side with the assistance of the rear lower inclined portion 29B of the resonator 29 as the 2 nd inclined portion, and upward diffusion of the traveling wind can be suppressed.

Therefore, the traveling wind can be guided to the intake pipes such as the throttle body 26, the intake pipe 27, and the intake manifold 28 more reliably, and the cooling performance of the intake pipes such as the throttle body 26, the intake pipe 27, and the intake manifold 28 can be improved.

Although embodiments of the present invention have been disclosed, it will be apparent to those skilled in the art that changes may be made without departing from the scope of the invention. All such modifications and equivalents are intended to be included within the scope of the appended claims.

Claims

1. A cooling device for a vehicle is provided with:

a front grille disposed at a front portion of a vehicle and covering an engine room at a front portion of the vehicle from a front side;

a radiator having a main body portion extending in a vehicle vertical direction, the radiator being disposed behind the front grille in the engine room, an upper end of the main body portion being lower than an upper end of the front grille;

an engine disposed in the engine room, an output shaft of the engine facing in a vehicle width direction;

an intake device having an intake pipe for supplying air taken in from a front portion of the engine room to the engine, a part of the intake pipe being disposed in a space behind the radiator; and

an engine cover covering an upper portion of the front grille and an upper portion of the engine room and disposed with a gap from an upper end of the front grille,

the cooling device for a vehicle is characterized in that a running wind is introduced into the engine room from the front of the vehicle through the gap,

the front grill has a front lower inclined portion at an upper end surface thereof,

an air deflector having a rear lower inclined portion is provided above the radiator and below the engine cover,

the rear lower inclined portion is inclined such that an extension surface thereof faces a direction of a lower portion of the air intake pipe disposed in a rear space of the radiator,

the above-described engine cover has an inner panel on its inner side,

the air deflector comprises: a front edge portion extending downward from a front edge of the air guide plate and fixed to a front portion of the inner panel; and a leg portion extending upward from an upper surface of the rear lower inclined portion and fixed to the inner panel.

2. The vehicular cooling apparatus according to claim 1,

the air guide plate is mounted on the inner side surface of the engine cover above the radiator.

3. The vehicular cooling apparatus according to claim 2,

a frame portion extending in the vehicle width direction and protruding downward is disposed at a front portion of the inner panel,

the front edge portion is fixed to the inner panel on the front side of the frame portion, and the leg portion is fixed to the inner panel on the rear side of the frame portion.

4. The vehicular cooling apparatus according to claim 2,

a resonator is arranged in front of the upper part of the air intake pipe,

the bottom surface of the resonator is arranged at a position lower than the upper end of the front grid,

a rear lower inclined part is arranged on the bottom surface of the resonator,

in the case where the rear lower inclined portion of the air guide plate is set to the 1 st inclined portion and the rear lower inclined portion of the resonator is set to the 2 nd inclined portion,

the 2 nd inclined portion is disposed above a surface of the 1 st inclined portion extending rearward of the vehicle.