JP3321760B2 - Engine related heat dissipation device in vehicle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radiator for an engine in a vehicle, in which a radiator for an engine, for example, a radiator for a refrigerant of an intercooler, is disposed in an engine room of the vehicle.

[0002]

2. Description of the Related Art Conventionally, according to Japanese Patent Application Laid-Open No. 2-225134, an oil cooler as a radiator for an engine is divided into right and left sides so as not to interfere with a radiator for engine cooling water arranged at a front portion of an engine room. What is arranged is known.

[0003]

Incidentally, the intake passage of the engine is generally arranged such that the outside air inlet at the upstream end thereof is located on one side of the engine room, and an oil cooler is provided on both sides as in the above prior art. When divided, the waste heat of the oil cooler arranged on the same side as the outside air inlet affects the intake passage, the intake air temperature rises, the filling efficiency decreases, and the durability of the intake passage decreases. And other various inconveniences. In view of the above, an object of the present invention is to provide an apparatus capable of reducing the influence of waste heat of a radiator on an intake passage of an engine as much as possible.

[0004]

In order to achieve the above object,
According to a first aspect of the present invention , a radiator associated with an engine is divided and arranged in an engine room of a vehicle,
A radiator that is located in a place that easily affects waste heat on the intake passage of the engine among the plurality of divided radiators ,
The radiator is disposed on the downstream side of the refrigerant passage . Further, the second aspect of the present invention relates to a vehicle air conditioner.
Separate radiators related to the engine in the engine room
Of the multiple radiators divided
Heat dissipated in front of the outside air inlet of the engine's intake passage
The heat sink is characterized in that it is smaller than other radiators.
You.

[0005]

Even if one of the divided radiators is placed in a place where the waste heat is likely to be exerted on the intake passage of the engine, the amount of heat radiated by the radiator is set small, so that the influence of the waste heat on the intake passage is reduced. Is reduced, and an increase in the intake air temperature is suppressed. In order to improve the total heat radiation efficiency of the plurality of divided radiators, the series method in which the refrigerant is flowed in series to the plurality of radiators is more advantageous than the parallel method .
As in the first embodiment, if a radiator that easily affects waste heat is arranged downstream of the refrigerant passage with respect to another radiator, the refrigerant that has been cooled to some extent by the other radiator easily affects waste heat. Since the heat flows to the radiator, the amount of heat radiation of the radiator is smaller than that of the other radiators. Further, as in the second aspect of the present invention,
A vent located in front of the outside air inlet of the engine intake passage
Even if the heater is made smaller than other radiators, the same effect can be obtained.
In addition, the outside air conduction of the intake passage of the engine can be obtained
Since the radiator provided in front of the entrance becomes smaller, the engine
The space that can be installed for the intake passage of
The degree of freedom is greatly improved.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIG. 1, reference numeral 1 denotes an engine room of an automobile. A radiator 2 for flowing cooling water for an engine E is disposed in front of the engine room 1, and a coolant 2 for flowing an intercooler 3 is provided. A pair of split radiators 4 ₁ , 4 ₂
Are distributed on the left and right sides of the radiator 2.

An air cleaner 6 is provided on the apron of the wheel house 1a on one side of the engine room 1, as shown in FIGS. The intake duct 7 is wrapped under the side frame 1b below the wheel house 1a and is started up in the space inside the fender 1c.
The outside air is taken in from the outside air inlet 7a at the upper end of the air cleaner, and the air purified by the air cleaner 6 is removed as shown in FIG.
The air compressed by the supercharger 9 is guided to the supercharger 9 through the air duct 8 on the downstream side of the engine E and the intake manifold 11 of the engine E through the intercooler 3 and the throttle body 10.
To be supplied.

When the radiators 4 ₁ , 4 ₂ are divided into right and left sides as described above, the air intake duct 7
Are more susceptible to waste heat from the _first radiator 41 disposed on the same side as this. That is, a portion of the warmed air as indicated by the arrow a in FIG. 2, bypassing the bulkhead side panel 1d provided at the front end of the wheel house 1a by the radiation of the intercooler refrigerant in the first radiator 4 ₁ As a result, the heated air flows into the space inside the fender 1c and flows into the air intake duct 7 disposed in the fender 1c, so that the temperature of the intake air tends to increase.

Therefore, in this embodiment, the intercooler 3
Refrigerant air intake duct 7 and the flow to the first radiator 4 ₁ after flowing into the second radiator 4 ₂ arranged on the opposite side from the heat radiation amount of the first radiator 4 ₁ second radiator 4 _It was made smaller than ₂ . In detail, the refrigerant is circulated by the pump 12 to the intercooler 3 and the radiators 4 ₁ , 4 _2, and the tube 13 ₁ connected to the refrigerant outlet of the intercooler 3 is connected to the second radiator 4 ₂ . connect, a degree cooled refrigerant by heat radiation at the second radiator 4 ₂ to flow into the first radiator 4 ₁ via a tube 13 _2, tube 13 ₃ from the first radiator 4 ₁ and the pump and to return the refrigerant to intercooler 3 via the 12 and the tube 13 _4. In this manner, by reducing the heat radiation amount of the first radiator 4 _1, waste heat influence of the first radiator 4 ₁ is reduced relative to the air intake duct 7, increase in the intake air temperature can be suppressed.

[0010] The air flow of arrow a as described above flows through the notch 1e formed in the lower portion of the bulkhead side panels 1d, wherein the first radiator 4 _1, as shown in FIG. 3,
Since the lower half portion thereof is disposed so as to face the notch 1e, through the air intake duct 7 side air mainly passes through the first lower half of the radiator 4 ₁ becomes the air flow arrows a Will be. Accordingly, in this embodiment, from the upper tank 4a side to the first radiator 4 ₁ toward the lower tank 4b side flowing refrigerant, the heat radiation amount in the lower half of the first radiator 4 ₁ than the upper half as smaller, with reduced waste heat influence of the first radiator 4 ₁ for air intake duct 7 as much as possible.

In this embodiment, the refrigerant tube 13 is used.
_1, 13 ₃ and disposed along a downstream side half portion of the air intake duct 7 exposed in the engine room 1, and adapted to suppress the thermal effect from the engine E side relative to the air intake duct 7.

[0012] In the above embodiment, the first radiator 4 by ₁ to shed refrigerant through the second radiator 4 ₂ first radiator 4 ₁
Of but a heat radiation amount is set relatively small, it is not limited thereto, it may be to reduce the heat radiation amount possible to reduce the size of the first radiator 4 _1. The present invention can also be applied to a case where another radiator related to the engine, for example, an oil cooler is divided and arranged.

[0013]

As is apparent from the above description, according to the present invention, the effect of waste heat of the radiator on the intake passage of the engine can be reduced to suppress the rise in the intake air temperature, and the charging efficiency can be reduced and the intake air can be reduced. This has the effect of eliminating problems such as deterioration in durability of the passage.

[Brief description of the drawings]

FIG. 1 is a plan view showing a layout of an example of the apparatus of the present invention.

FIG. 2 is a perspective view in which a radiator of a main part is omitted.

FIG. 3 is a sectional view taken along the line III-III of FIG. 2;

[Explanation of symbols]

1 engine room 4 ₁ , 4 ₂ radiator 7 air intake duct (intake passage)

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-2-225134 (JP, A) JP-A-4-255522 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) B60K 11/04 F01P 3/18

Claims (2)

(57) [Claims] A radiator associated with an engine is divided and disposed in an engine room of a vehicle, wherein the radiator is disposed at a place where the radiator easily influences waste heat on an intake passage of the engine among a plurality of divided radiators. Radiator to another radiator
An engine-related heat radiating device for a vehicle, wherein the heat radiating device is disposed on a downstream side of a refrigerant passage . 2. An engine related to an engine room of a vehicle.
Radiator that is divided
Outside air inlet of the engine intake passage
The radiator located in front of the radiator is smaller than other radiators.
Engine related heat dissipation device in a vehicle, characterized in that the.