JP2003035224A - Internal combustion engine apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the number of components of an intake control system and a radiator control system while maintaining operations of the systems. SOLUTION: An intake change-over door 61 and a cooling air door 62 are operated in a mechanically interlocking manner by one actuator 65, and a shroud 21, an intake duct part 22, an inside air introducing duct art 23 and an outside air introduction part 24 are formed integrally with a front panel 20, thus reducing the number of components of the intake control system and the radiator control system while maintaining operations of the systems.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an internal combustion engine device for controlling intake air of an internal combustion engine (engine) and cooling capacity of a radiator.

[0002]

2. Description of the Related Art An engine is for compressing a mixture of air and fuel to ignite and burn (explode) it to obtain power. When the engine is started in a cold state), it is easier to vaporize (evaporate) the fuel when the temperature of the air (intake air) is relatively high, so the startability of the engine can be improved.

On the other hand, if the intake air temperature is high when the temperature of the engine is sufficiently increased after the warm-up operation is completed, the intake air (oxygen) density is decreased and the intake air mass is decreased, so that the engine output is decreased.

Therefore, the inventors of the present invention have supplied the air in the engine room (hereinafter referred to as "inside air") to the engine according to the operating state of the engine and the air outside the engine room (hereinafter referred to as "air"). Is referred to as "outside air" for the engine, and a radiator control system for controlling the amount of cooling air supplied to the radiator according to the operating state of the engine.

However, since the product under consideration has an actuator for operating the intake control system and an actuator for operating the radiator control system, there are many components that make up the system, and it is difficult to reduce manufacturing costs. Was.

In view of the above points, the present invention has an object to reduce the number of system components while operating the intake control system and the radiator control system.

[0007]

In order to achieve the above-mentioned object, the present invention provides a suction duct (2) for guiding combustion air to a liquid-cooled internal combustion engine (10) in the invention described in claim 1.
2), an inside air introduction duct (23) for guiding the inside air in the engine room (11) in which the internal combustion engine (10) is mounted to the intake duct (22), and an outside air outside the engine room (11) for the intake duct (22). ) Leading to the outside air (24),
Intake control means (61) for adjusting the amount of inside air and the amount of outside air introduced into the intake duct (22), and the internal combustion engine (1
A radiator (30) for heat-exchanging a cooling liquid for cooling (0) and the outside air, and a radiator air volume adjusting means (62) for adjusting an air volume passing through the radiator (30).
The intake control means (61) and the radiator air flow rate adjusting means (62) are configured to be mechanically interlocked by one driving means (65).

As a result, the number of system components can be reduced while operating the intake control system and the radiator control system.

According to the second aspect of the present invention, the intake control means is arranged in the connecting portion between the inside air introducing duct (23) and the outside air introducing duct (24) to open and close the air passage. An opening / closing door (61) is provided, and a radiator air flow rate adjusting means (62) is constituted by a plurality of strip-shaped opening / closing doors (6
3) may be arranged in the shape of an armor window, and both opening / closing doors (61, 63) may be driven by a link member (64) connected to a driving means (65).

Further, as in the invention described in claim 3, a support portion (25) rotatably supporting both opening / closing doors (61, 63) on a front end panel arranged at the front end portion of the vehicle and extending in the vehicle width direction. ) May be provided.

Further, as in the invention described in claim 4, the intake duct (22), the inside air introducing duct (23) and the outside air introducing duct (24) may be formed in the front end panel.

Further, as in the invention described in claim 5, the air flow induced by the fan (50) by covering the gap with the fan (50) for blowing the cooling air to the radiator (30) is generated by the radiator (30). ) May be integrally formed with the front end panel to suppress the detouring.

Incidentally, the reference numerals in the parentheses of the above-mentioned means are examples showing the correspondence with the concrete means described in the embodiments described later.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS (First Embodiment) This embodiment is an application of the internal combustion engine device according to the present invention to a vehicle, and FIG. 1 shows an internal combustion engine device (engine system) according to the present embodiment. It is a schematic diagram.

Reference numeral 10 is a running engine (internal combustion engine), and 20 is a front end panel (hereinafter abbreviated as "panel") arranged at the front end of the vehicle and extending in the vehicle width direction. An engine room 11 in which 10 is mounted and the outside of the engine room 11 are partitioned.

Reference numeral 12 is an intake manifold (intake pipe) for distributing intake air to each cylinder of the engine 10.
Reference numeral 13 is a hood that closes the upper portion of the engine room 11.

Reference numeral 30 denotes a radiator that cools the coolant by exchanging heat between a coolant for cooling the engine (in this embodiment, a fluid obtained by mixing ethylene glycol antifreeze with water) and the outside air. An outdoor heat exchanger (condenser in the present embodiment) 40 of a vehicle air conditioner (vapor compression refrigerator) is mounted on the upstream side of the air flow.

The radiator 30 is assembled to the panel 20 via an elastic vibration absorbing member (not shown) such as rubber, and the capacitor 40 is assembled to the radiator 30.

Reference numeral 50 is a condenser 40 and a radiator 30.
The blower 50 is an axial fan type blower that blows cooling air to the blower 50. The blower 50 covers a gap with the blower 50 so that the air flow induced by the blower 50 is generated by the condenser 40.
Also, it is assembled to the panel 20 via a shroud 21 that suppresses bypassing the radiator 30.

Reference numeral 22 is an intake duct portion 22 that guides intake air (combustion air) to the intake pipe 12, and reference numeral 23 is air in the engine room 11 (hereinafter, this air is referred to as internal air). Reference numeral 24 denotes an inside air introducing duct portion (hereinafter, abbreviated as inside air duct portion) that leads to the engine room 11
An outside air introduction duct portion (hereinafter, abbreviated as an inside air duct portion) 24 that guides outside air (hereinafter, this air is referred to as outside air) to the intake duct portion 22, and these duct portions 22 to 24 and the shroud 21 are It is integrally molded with resin.

Reference numeral 24a denotes an outside air introduction port for taking in outside air, and this outside air introduction port 24a is opened above the panel 20 toward the front side.

By the way, the reference numeral 61 is arranged at the connecting portion between the inside air duct portion 23 and the inside air duct portion 24, and the air passage portion 23a for connecting the inside air duct portion 23 and the intake duct portion 22.
This is a strip-shaped intake switching door (intake control means) for switching and opening and closing the air passage in the outside air duct portion 24 and the intake duct portion 22 (engine 1
The amount of inside air and the amount of outside air introduced into 0) are adjusted.

Reference numeral 62 designates a plurality of strip-shaped opening / closing doors 6.
3 is a blind shutter type cooling air door (radiator air volume adjusting means) configured by arranging 3 in the shape of an armor window, and the condenser 40 is opened and closed by opening and closing the cooling air door 62.
And the amount of air passing through the radiator 30 is adjusted.

The intake switching door 61 and the opening / closing door 6
3 is rotatably supported by the panel 20 in a state where its longitudinal direction is arranged to extend in the vehicle width direction, and is swung (opened / closed) by a rod-shaped link member 64 extending in the vertical direction.

Numeral 65 is an actuator (driving means) for actuating the link member 34 in the vertical direction, and this actuator 65 is of a diaphragm type which operates by using the suction negative pressure of the engine as a drive source.

With the configuration described above, the intake switching door 6
1 and the opening / closing door 63 are mechanically interlocked by a link member 64 connected to an actuator 65 to open / close. The suction negative pressure is controlled by the solenoid valve 65a.

Incidentally, the intake switching door 61 and the opening / closing door 6
As shown in FIG. 2, the reference numeral 3 indicates a keyhole-shaped door supporting portion 25 formed on the panel 20, and an intake switching door 61 and an opening / closing door 6.
Shafts 61a, 63a formed at the longitudinal ends of
It is rotatably supported by mounting.

At this time, as shown in FIGS. 3 and 4, the door supporting portion 25 has the opening 2 for inserting the shafts 61a and 63a.
Round hole 25b having a diameter A larger than the opening dimension a of 5a
Is a keyhole-shaped hole formed on the forward side of the insertion direction D,
On the other hand, the shafts 61a and 63a have a substantially oval cross-sectional shape in which the minor axis dimension b is substantially equal to the opening dimension a and the major axis dimension B is substantially equal to the diameter A, and a round hole 25b is provided on the tip side thereof. Disc-shaped umbrella portions (stoppers) 61b, 63b larger than (diameter A) are provided.

As a result, if the swing (rotation) angles of the intake switching door 61 and the opening / closing door 63 are 90 ° or less, the shafts 61a, 63 do not fall off from the door supporting portion 25.
a can swing (rotate).

By the way, FIG. 5 is a table showing opening / closing operations of the intake switching door 61 and the cooling air door 62.
Based on the above, characteristic operations of the internal combustion engine device according to the present embodiment will be described.

When the high pressure side refrigerant pressure (compressor discharge pressure) of the air conditioner is below a predetermined pressure and the temperature of the engine cooling water is below a predetermined temperature (for example, 90 degrees), the cooling air door 62 is opened. While closing the inside air, the intake air duct 2
The intake switching door 61 is operated so as to lead to 2.

As a result, intake air of a relatively high temperature can be supplied to the engine, and the radiator 3
Since it is possible to prevent the heat of the engine cooling water (engine) from being released to the atmosphere from 0, it is possible to promote the warm-up operation while improving the startability of the engine.

When the pressure of the refrigerant on the high pressure side of the air conditioner is equal to or lower than the predetermined pressure and the temperature of the engine cooling water is higher than the predetermined temperature, the cooling air door 62 is opened and
The intake switching door 61 so that the outside air is guided to the intake duct portion 22.
Operate.

As a result, the outside air having a lower temperature than the inside air can be supplied to the engine 10 and the engine cooling water (engine) can be cooled.
It is possible to prevent a decrease in engine output and improve fuel efficiency.

When the refrigerant pressure on the high-pressure side of the air conditioner is higher than the predetermined pressure, the cooling air door 62 is opened and the intake switching door 61 is operated so as to guide the outside air to the intake duct portion 22 regardless of the engine cooling water. Let

As a result, the condenser 40 (high-pressure side refrigerant) can be cooled, so that the pressure of the high-pressure side refrigerant can be reduced and the refrigerating capacity of the air conditioner can be increased.

Next, the features of this embodiment will be described.

In this embodiment, since the intake air switching door 61 and the cooling air door 62 are mechanically operated by one actuator 65, the intake control system and the radiator control system are operated. While
The number of system components can be reduced.

In this embodiment, the intake switching door 61
Although the opening and closing of the cooling air door 62 is controlled, the present invention is not limited to this, and the intake air switching door 61 and the cooling air door 62 may be controlled to have an intermediate opening.

(Second Embodiment) In the first embodiment, the panel 20 is provided with the keyhole-shaped door support portion 25, and the shafts 61a and 63a have a substantially oval cross section. As shown in FIG. 6, the door support 25
With a simple round hole shape, and the shafts 61a, 6a
After assembling 3a to the door support portion 25, E on the front end side
A stopper ring 61c for preventing a retaining ring such as a retaining ring or a C retaining ring,
63c is attached.

(Third Embodiment) In the present embodiment, the assembling property of the opening / closing door 63 constituting the cooling air door 62 to the door supporting portion 25 (panel 20) is improved.

Specifically, as shown in FIG. 7A, when the opening / closing door 63 is resin-molded, a plurality of opening / closing doors 63 are formed.
After integrally forming the holding portion 63d for holding the plurality of opening / closing doors 63 with the holding portion 63d holding the plurality of opening / closing doors 63 as shown in FIG. As shown in FIG. 7C, the holding portion 63d is separated.

As a result, a plurality of opening / closing doors 63 can be assembled to the door support portion 25 (panel 20) in one step, so that the assembling property can be improved.

(Other Embodiments) In the above-described embodiment, the diaphragm type actuator 65 which operates by the suction negative pressure of the engine 10 is adopted as the actuator 65, but the present invention is not limited to this, and the servo motor is not limited thereto. Other driving means such as

Further, in the above embodiment, the shroud 2
1, the intake duct part 22, the internal air introducing duct part 23, and the external air introducing duct part 24 are integrally formed with the panel 20, but the present invention is not limited to this, and each of them is manufactured as a separate body. May be assembled.

In the above-mentioned embodiment, the panel 20 is made of resin, but the present invention is not limited to this and may be made of metal such as aluminum.

[Brief description of drawings]

FIG. 1 is a schematic diagram of an internal combustion engine device according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view of an intake switching door and a cooling air door according to the first embodiment of the present invention.

FIG. 3 is an exploded perspective view of an intake switching door and an opening / closing door according to the first embodiment of the present invention.

FIG. 4 is a view on arrow A in FIG.

FIG. 5 is a chart showing a control pattern of the intake switching door and the cooling air door according to the first embodiment of the present invention.

FIG. 6 is an exploded perspective view of an intake switching door and an opening / closing door according to a second embodiment of the present invention.

FIG. 7 is an explanatory view showing a method of assembling the intake switching door and the opening / closing door according to the third embodiment of the present invention.

[Explanation of symbols]

10 ... Engine, 20 ... Front end panel, 21 ...
Shroud, 22 ... Intake duct part, 23 ... Inside air introducing duct part, 24 ... Outside air introducing duct part, 30 ... Radiator, 4
0 ... Capacitor

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) F02M 31/07 F02M 31/06 E (72) Inventor Harumi Okai 1-chome Showa-cho, Kariya city, Aichi stock Company DENSO (72) Inventor Noriaki Maeda 1-1 Showa-cho, Kariya City, Aichi Prefecture Denso Co., Ltd. (72) Inventor Toshiki Sugiyama 1-1-Showa-cho, Kariya City, Aichi Stock Company DENSO ) Inventor, Norihisa Sasano, 1-1, Showa-cho, Kariya city, Aichi F-term in DENSO CORPORATION (reference) 3D038 AA06 AB01 AC01 AC11 AC17 BA05 BB01 BC01 BC14

Claims (5)

[Claims] 1. An intake duct (22) for introducing combustion air into a liquid-cooled internal combustion engine (10), and an engine room (1) in which the internal combustion engine (10) is mounted.
1) an inside air introducing duct (23) for guiding the inside air into the intake duct (22); an outside air introducing duct (24) for guiding outside air outside the engine room (11) to the intake duct (22); Intake control means (61) introduced into the duct (22) for adjusting the amount of the inside air and the amount of the outside air, and the cooling liquid for cooling the internal combustion engine (10) and the outside air are heat-exchanged to cool the cooling liquid. And a radiator air volume adjusting means (62) for adjusting an air volume passing through the radiator (30). The intake air controlling means (61) and the radiator air volume adjusting means (62) are integrated into one. An internal combustion engine device characterized by being configured to be mechanically interlocked by a drive means (65). 2. The strip control opening / closing door (6), wherein the intake control means is arranged at a connection portion between the inside air introduction duct (23) and the outside air introduction duct (24) to open and close an air passage.
1), the radiator air flow rate adjusting means (62) is configured by arranging a plurality of strip-plate-like opening / closing doors (63) in an armor window shape. The internal combustion engine device according to claim 1, wherein the opening / closing doors (61, 63) are driven by a link member (64) connected to the driving means (65). 3. A front end panel which is applied to a vehicle equipped with the internal combustion engine device according to claim 2 and which is arranged at a front end portion of the vehicle and expands in a vehicle width direction, wherein the opening and closing doors (61, 63) are provided. A front end panel, characterized in that a support portion (25) for rotatably supporting is provided. 4. The front end panel according to claim 3, wherein the intake duct (22), the inside air introduction duct (23) and the outside air introduction duct (24) are formed. 5. The air flow induced by the fan (50) is prevented from bypassing the radiator (30) by covering a gap between the radiator (30) and a fan (50) that blows cooling air. Shroud (21)
Are integrally formed.
Front end panel described in.