KR101261924B1 - Air cleaner system for automibile and freezing prevention method of air cleaner using the same - Google Patents

Abstract

The present invention relates to an automotive air cleaner system and a method of preventing freezing of an air cleaner using the same, and more particularly, a part of air compressed at high temperature and high pressure in a turbocharger is bypassed to a rear end of an air duct and flowed into an air cleaner. The present invention relates to an automotive air cleaner system capable of melting snow or ice, and a method of preventing freezing of an air cleaner using the same.
To this end, the present invention comprises an intake bypass pipe that is directly connected between the air duct for supplying air to the air cleaner and the compressor of the turbocharger to receive and compress the air of the intake pipe receiving the outside air from the air cleaner And a part of the high temperature and high pressure air compressed by the compressor of the turbocharger through the intake bypass pipe to the rear end of the air duct to introduce the air cleaner into the air cleaner. to provide.

Description

Air cleaner system for automobile and freezing prevention method of air cleaner using same {Air cleaner system for automibile and freezing prevention method of air cleaner using the same}

The present invention relates to an automotive air cleaner system and a method of preventing freezing of an air cleaner using the same, and more particularly, a part of air compressed at high temperature and high pressure in a turbocharger is bypassed to a rear end of an air duct and flowed into an air cleaner. The present invention relates to an automotive air cleaner system capable of melting snow or ice, and a method of preventing freezing of an air cleaner using the same.

In addition to the basic function of providing a passage for introducing new air into the engine, the vehicle intake system plays an important role in improving the engine performance by reducing intake noise and intake resistance.

Since the temperature of the air supplied to the engine affects the power performance of the engine, the air flowing into the engine should have cold external air as much as possible and minimize the temperature rise due to heat in the engine room. The air inflow should be made to be less affected by snow or rain.

5 and 6, the air intake system includes an air duct 1 through which fresh outside air is introduced, and an air cleaner for removing impurities from outside air introduced through the air duct 1 to provide a supply passage of the outside air. 2) and an intake pipe 3 for guiding clean air from which impurities are removed to the engine combustion chamber.

The air duct (1) serves as an air induction pipe for allowing the outside air required by the engine to flow from the atmosphere, the cold duct is smoothly introduced and is installed in a position that is less affected by snow or rain. In addition, the noise control effect can be obtained according to the cross-sectional area, length, and material of the air duct (1).

Referring to FIG. 7, the air cleaner 2 includes a non-woven material 2a or filter member, and protects the engine by removing foreign substances in intake air through the element 2a. Do it.

In addition, the air cleaner 2 may serve as an expansion chamber to reduce noise generated when inflowing outside air.

The intake pipe (3) serves as an air induction pipe connecting the air filtered by the air cleaner (2) to the inlet of the turbocharger (4, or throttle body), the durability that can withstand the negative pressure and vibration of the engine do.

In addition, the intake pipe 3 is formed by sufficiently securing a bellows section so as to accommodate a distance change between the air cleaner 2 fixed to the vehicle body and the turbocharger 4 moving when the engine is rolling. It can serve to absorb.

As described above, the conventional car intake system filters foreign substances in the air introduced through the air duct 1 to the elements 2a of the air cleaner 2 to filter clean air into the intake pipe 3 and the turbocharger 4. It is supplied to the engine side through.

However, in addition to the air supplied to the engine side, rainwater or snow may be mixed into the air cleaner depending on weather conditions, in addition to dust, and particularly in cold weather, snow may accumulate inside the air cleaner or absorb moisture due to heavy snow or cold weather. As the surface of one element freezes, the amount of air supplied to the engine side decreases, causing a problem of a decrease in vehicle speed while driving or a problem of starting failure when stopping for a long time.

In other words, snow in sub-zero weather is accumulated at the bottom of the element of the air cleaner among foreign substances other than the air introduced through the air duct, and the accumulated snow reduces the air passage area of the element to intake air from the ECU (Engine control unit). As the negative pressure is increased, the engine warning lamp is operated to inform the driver of the reduction of speed or output reduction. In the case of severe load, the driver may directly sense the speed reduction.

In addition, when the snow flows into the air cleaner and the snow enters the element and melts, and the material absorbs moisture, the element surface is left overnight after the vehicle is turned off. This freezes and, in severe cases, starts up.

In this case, remove the snow inside the air cleaner and replace the new element or thaw the frozen part.However, it is impossible to replace or thaw the element while driving or parked for a long time. As a result, there is a problem that the safety of the driver and the passenger is threatened.

The present invention has been invented to solve the above problems, when the intake negative pressure is higher than the set negative pressure can bypass the portion of the compressed air at high temperature and high pressure in the turbocharger to the rear end of the air duct can be re-introduced into the air cleaner The purpose of the present invention is to provide an air cleaner system for automobiles capable of melting snow or ice inside the air cleaner and a method of preventing freezing of the air cleaner using the same.

In addition, the present invention bypasses a portion of the high temperature and high pressure air discharged from the heater for heating the room when the intake negative pressure is higher than the set negative pressure to the rear end of the air duct to be re-introduced into the air cleaner to clean the snow or ice inside the air cleaner. Another object of the present invention is to provide a meltable automotive air cleaner system and a method of preventing freezing of the air cleaner using the same.

In order to achieve the above object, the present invention, the intake bypass is directly connected between the air duct for supplying air to the air cleaner and the compressor of the turbocharger to receive and compress the air of the intake pipe receiving the outside air from the air cleaner It is configured to include a pipe, characterized in that the intake bypass pipe to bypass the portion of the high temperature and high pressure air compressed by the compressor of the turbocharger to the rear end of the air duct to be introduced into the air cleaner Provides air cleaner system for

Preferably, the intake bypass pipe is characterized in that one end is connected to the opening and closing valve installed in the compressor rear portion of the turbocharger, the other end is connected to the pipe fitting member provided at the rear end of the air duct.

In addition, the on-off valve is characterized in that the solenoid valve that can be opened and closed by the operation of the engine control unit (ECU) control.

In addition, the intake pipe is characterized in that the intake negative pressure sensor for measuring the intake negative pressure.

In another aspect, the present invention comprises an intake bypass pipe connected directly between the air duct for supplying air to the air cleaner and the air supply hose for supplying the high temperature and high pressure air preheated by the heater for indoor heating to the vehicle interior, It also provides a vehicle air cleaner system, characterized in that by passing through the intake bypass pipe part of the high temperature and high pressure air of the air supply hose to the rear end of the air duct to enter the air cleaner.

The intake bypass pipe is characterized in that the one end is connected to the on-off valve installed on one side of the air supply hose, the other end is connected to the pipe joint member provided on the rear end of the air duct.

The on-off valve is characterized in that the solenoid valve which is operated by the control of the engine control unit (ECU) can be opened and closed, the intake pipe is characterized in that the intake negative pressure sensor for measuring the intake negative pressure.

On the other hand, the present invention, by measuring the outside air temperature of the vehicle and the intake negative pressure of the intake pipe, if the outside air temperature is less than 0 ℃ and the intake negative pressure of the intake pipe is less than the set negative pressure, the on-off valve is opened to the high temperature and high pressure in the turbocharger Provided is a method for preventing freezing of an air cleaner using an air cleaner system for an automobile, characterized by bypassing a part of the compressed air to the rear end of the air duct through an intake bypass pipe.

In addition, the present invention, by measuring the outside air temperature of the vehicle and the intake negative pressure of the intake pipe, if the outside air temperature is less than 0 ℃ and the intake negative pressure of the intake pipe is less than the set negative pressure, opening and closing valve to open the high temperature and high pressure in the heater for indoor heating It also provides a method for preventing freezing of the air cleaner using the air cleaner system for cars characterized in that by passing a portion of the preheated air to the rear end of the air duct through the intake bypass pipe.

The air cleaner system according to the present invention bypasses a part of the air compressed at a high temperature and high pressure in a turbocharger to the air duct so as to be re-introduced into the air cleaner to melt snow or ice inside the air cleaner in sub-zero weather. The intake negative pressure increased by snow or ice can be reduced, thereby improving the existing vehicle speed reduction or starting failure caused by the increase in intake negative pressure by snow or ice inside the air cleaner.

1 is a view schematically showing a vehicle air cleaner system according to an embodiment of the present invention
2A and 2B schematically illustrate the operation of an automotive air cleaner system according to an embodiment of the present invention.
3A and 3B schematically illustrate the operation of an automotive air cleaner system according to another embodiment of the present invention.
Figure 4 is a schematic flow chart showing the process of freezing the air cleaner using the air cleaner system for automobiles of the present invention
5 is a perspective view showing a conventional intake system for automobiles
6 is a side view schematically showing an eye inflow path of the intake system for automobiles
7 is a view showing the structure of a general air cleaner

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As mentioned above, the intake system of a vehicle generally includes an air duct (1), an air cleaner (2), an intake pipe (3), etc., in order to introduce external clean and cool air into the engine. Foreign matter in the air introduced through the air duct 1 is removed through the air cleaner 2 and supplied to the combustion chamber of the engine through the intake pipe 3.

At this time, the outside air supplied to the combustion chamber of the engine is introduced into the turbocharger 8 through the intake pipe 3, compressed by the turbocharger 4, and supplied to the combustion chamber of the engine (see FIGS. 5 and 6). .

Existing intake system for automobiles intake of intake pipe (3) by ice generated by freezing the surface of element (2a) of air cleaner (2) in snow or subzero weather accumulated by entering inside of air cleaner (2) As the negative pressure rises, a problem of vehicle speed reduction or starting failure occurs.

Accordingly, the present invention bypasses a part of the air compressed by the high temperature and high pressure in the compressor of the turbocharger 4 to the rear of the air duct 1 to be circulated to the air cleaner 2 to freeze inside the air cleaner 2. And it provides a car air cleaner system that can prevent the snow loading phenomenon to prevent the rise of the intake air pressure of the intake pipe (3).

As shown in FIG. 1, an automotive air cleaner system according to the present invention includes an intake air bypass pipe 5 installed between an air duct 1 and a turbocharger 4.

The air duct 1 induces and supplies outside air to the air cleaner 2, and the intake pipe 3 induces and supplies clean air supplied from the air cleaner 2 to the turbocharger 4.

The turbo charger 4 compresses air using the exhaust pressure of the exhaust gas and supplies the compressed air to the engine side.

The intake bypass pipe (5) is a high-temperature, high-pressure compressed air generated by the turbocharger (4) when the intake negative pressure of the intake pipe (3) is increased due to snow or ice inside the air cleaner (2) Serves to bypass the rear of the air duct (1).

To this end, an automotive air cleaner system according to the present invention includes an on / off valve (not shown) installed at a compressor rear portion of a turbocharger 4 to which one end of the intake bypass pipe 5 is connected, and the intake bypass. A pipe joint member connected to the rear end of the air duct 1 to which the other end of the pipe 5 is connected, specifically to the outlet side of the air duct 1 connected to the inlet front side of the air cleaner 2 ( 7).

The on-off valve is mounted on the compressor rear part of the turbocharger 4 to open and close the turbocharger 4 and the intake bypass pipe 5, and in particular, a part of the air compressed at high temperature and high pressure in the compressor is It functions to open so that it can flow into the intake air intake pipe (5).

Accordingly, a portion of the high temperature and high pressure compressed air discharged from the compressor of the turbocharger 4 may be introduced into the intake bypass pipe 5 according to the operation of the on / off valve.

In other words, the on-off valve is one end of the intake bypass pipe 5 and the turbocharger 4 so that the high temperature and high pressure outside air discharged from the compressor of the turbocharger 4 can flow into the intake bypass pipe 5. Is installed between the compressors.

The on-off valve may be applied as long as the valve member is operated by the control of the engine control unit (ECU) to open one end of the intake bypass pipe 5 connected to the compressor rear part of the turbocharger 4, For example, a solenoid valve can be used.

The pipe fitting member 7 may be used as long as it is a member capable of connecting and fixing the other end of the intake bypass pipe 5 to the rear end of the air duct 1 and preventing leakage or inflow of foreign substances. For example, the other end of the intake bypass pipe 5 can be coupled to the rear end of the air duct 1 by using a component such as a nipple and a clip.

The high temperature and high pressure compressed air moved along the intake bypass pipe 5 may be introduced into the rear end of the air duct 1 through the inside of the pipe fitting member 7.

On the other hand, the intake pipe 3 is equipped with an intake air pressure sensor 6 for measuring the intake air pressure at the front end inlet side of the intake pipe 3, and the engine control unit is the intake air pressure sensor of the intake pipe 3 6 and the operation of the on-off valve in accordance with the measured value of the vehicle outside air temperature sensor (not shown).

When the intake negative pressure increases by snow or ice inside the air cleaner 2 in sub-zero weather, the engine control unit detects the intake negative pressure sensor 6 and the outside air temperature sensor, and the intake negative pressure sensor 6 If the measured value of) is higher than the set negative pressure, which may cause a decrease in vehicle speed during driving or a start failure during parking, the engine control unit may remove the compressed air of high temperature and high pressure from the compressor of the turbocharger 4. By bypassing the front of (2), the internal temperature of the air cleaner 2 is increased to control the melting of snow or ice.

For reference, the outside air temperature sensor is mounted at an appropriate position for measuring the air temperature outside the vehicle, it can be determined that the weather is below zero through the measured value.

In addition, it is preferable to use the intake intake pipe 5 made of a rubber material.

The operation of the air cleaner system for a vehicle configured as described above will be described with reference to FIGS. 2A, 2B, and 4.

As shown in FIG. 2A, the outside air flowing into the air duct 1 (normally, when snow or ice does not accumulate inside the air cleaner) is filtered through the air cleaner 2 to clean foreign substances in the air in the intake pipe. (3) flows into the turbocharger (4) from the intake pipe (3) and is compressed and discharged at a high temperature and high pressure in the compressor of the turbocharger (4), and is supplied to the combustion chamber of the engine via an intercooler and an intake manifold. do.

At this time, the high temperature and high pressure air discharged from the turbocharger 4 is cooled in the intercooler and then supplied to the engine combustion chamber through the intake manifold.

As shown in FIGS. 2B and 4, when snow accumulates inside the air cleaner 2 or when the element surface of the air cleaner 2 freezes, ice on the snow or element surface flowing into the air cleaner 2 is removed. In order to determine the outside air temperature of the vehicle while driving, it is determined whether the outside air temperature is less than 0 ° C., and the intake air pressure of the intake pipe 3 is measured to determine whether it is less than the set negative pressure.

As a result of determination, when the outside air temperature is less than 0 ° C. and the intake negative pressure of the intake pipe 3 is less than the set negative pressure, the on / off valve is opened to intake a portion of the air compressed at high temperature and high pressure in the compressor of the turbocharger 4. The tube 5 is supplied to the rear end of the air duct 1 by bypass. The high temperature and high pressure compressed air supplied to the air duct 1 is introduced into the air cleaner 2, and the air cleaner 2 has ice on the surface of snow or element loaded with the internal temperature increased by the compressed air. This melts away.

If the outside air temperature is not less than 0 ° C. and the intake negative pressure of the intake pipe 3 is not less than the set negative pressure, the engine control unit shuts off the on / off valve to remove the high temperature and high pressure air compressed by the turbocharger 4. The gas is supplied to the combustion chamber of the engine without bypassing the air duct 1.

Accordingly, the intake air of the vehicle flowing into the combustion chamber of the engine is normally moved through the paths such as the air duct 1, the air cleaner 2, the intake pipe 3, the turbocharger 4, and the intake manifold. In case that snow accumulates inside the air cleaner 2 or the surface of the element freezes, a part of the air compressed by the compressor of the turbocharger 4 is stored in the turbocharger 4-the intake bypass pipe 5-the air duct 1 Most of the intake air compressed by the turbocharger 4 is moved through the path of the air cleaner 2 and is supplied to the combustion chamber of the engine through the above path as usual.

Normally, snow or rain may also flow into the outside air introduced through the air duct 1, but may be filtered through the air cleaner 2.

As described above, the automotive air cleaner system of the present invention has a high temperature in the turbocharger 4 through an intake bypass pipe 5 directly connecting the rear end of the air duct 1 and the compressor rear part of the turbocharger 4. A portion of the compressed air at a high pressure can be bypassed to the rear end of the air duct 1 to be introduced into the air cleaner 2.

Accordingly, the internal temperature of the air cleaner 2 is increased to remove snow or ice inside the air cleaner 2 even in sub-zero weather, and the intake pipe 3 is formed by snow or ice inside the air cleaner 2. It is possible to improve the problem of the existing vehicle speed reduction or starting failure caused by the increase in intake negative pressure.

Meanwhile, an air cleaner system for an automobile according to another embodiment of the present invention will be described with reference to FIGS. 3A and 3B, and the description of the same technology as the above embodiment may be omitted.

In a vehicle in which the intake system is not equipped with a turbocharger, the high temperature and high pressure air preheated by the indoor heating heater (for example, a small PTC heater) can be introduced into the intake bypass pipe and circulated to the air duct side.

In detail, the heater for indoor heating, which is provided for indoor heating of the vehicle, has an air supply hose connected to the outlet side to supply the preheated high temperature and high pressure air to the room.

Accordingly, the air cleaner system according to the present invention connects an intake bypass pipe to the air supply hose that is connected between an indoor heating heater and a vehicle interior to provide high temperature and high pressure air that moves along the air supply hose to the rear of the air duct. Allow bypass to the end side.

That is, one end of the intake bypass pipe is connected to one side of the air supply hose, and the other end of the intake bypass pipe is connected to the rear end of the air duct.

In order to control the air flow inside the air supply hose, an opening and closing valve is installed between the intake bypass pipe and the air supply hose, the air duct and the intake bypass pipe is hermetically connected through the pipe joint member.

Accordingly, when snow accumulates inside the air cleaner or when the element surface of the air cleaner freezes, in order to melt and remove snow or element ice that flows into the air cleaner, the outside air temperature is measured by measuring the outside air temperature of the vehicle while driving. It is determined that the pressure is lower than the set negative pressure by measuring the intake negative pressure of the intake pipe.

As a result, if the outside air temperature is less than 0 ℃ and the intake negative pressure of the intake pipe is less than the set negative pressure, the opening and closing valve is opened to pass a portion of the air preheated to the high temperature and high pressure in the heater for indoor heating through the intake bypass pipe through the rear end of the air duct Bypass is supplied to the negative supply. The high-temperature, high-pressure air supplied to the air duct is introduced into the air cleaner, and the air cleaner is removed by melting the ice on the surface of snow or element loaded by the internal temperature of the air cleaner.

If the outside air temperature is not lower than 0 ° C and the intake negative pressure of the intake pipe is not lower than the set negative pressure, the engine control unit shuts off the valve to bypass the high temperature and high pressure air preheated by the heater for indoor heating to the air duct. Only supply it indoors.

In addition, in the usual case (if snow or ice does not accumulate inside the air cleaner), the outside air introduced into the air duct is introduced into the intake pipe in a clean state by filtering foreign substances in the air through the air cleaner, and the throttle in the intake pipe It enters the body and is supplied to the combustion chamber of the engine.

As such, the intake air of the vehicle flowing into the combustion chamber of the engine is normally moved through a path such as an air duct, air cleaner, intake pipe, throttle body, intake manifold, and the like. When frozen, part of the compressed air in the heater for indoor heating moves through the path of the air supply hose, the intake bypass pipe, the air duct, and the air cleaner, and most of the compressed air in the heater for the indoor heating goes to the interior of the vehicle as usual. Supplied.

1: Air duct
2: Air cleaner
3: intake pipe
4: Turbocharger
5: intake bypass tube
6: intake negative pressure sensor
7: pipe joint member

Claims (10)

Direct connection between the air duct (1) for supplying the outside air to the air cleaner (2) and the compressor of the turbocharger (4) for receiving and compressing air from the intake pipe (3) receiving the outside air from the air cleaner (2) And an intake bypass pipe 5 which is configured to pass a portion of the high-temperature, high-pressure air compressed by the compressor of the turbocharger 4 through the intake bypass pipe 5 to the rear end of the air duct 1. The air cleaner system for automobiles, characterized in that the bypass can be introduced into the air cleaner (2).
The method according to claim 1,
The intake bypass pipe 5 has one end connected to an on-off valve installed at the rear of the compressor of the turbocharger 4, and the other end connected to a pipe fitting member 7 provided at the rear end of the air duct 1. Automotive air cleaner system, characterized in that.
The method according to claim 2,
The on-off valve is a vehicle air cleaner system, characterized in that the solenoid valve which is operated by the control of the engine control unit (ECU) can be opened and closed.
The method according to claim 1,
The intake pipe (3) has a built-in intake negative pressure sensor (6) for measuring the intake negative pressure, the air cleaner system for automobiles.
delete delete delete delete The outside air temperature of the vehicle is measured and the intake negative pressure of the intake pipe 3 is measured. When the outside air temperature is less than 0 ° C. and the intake negative pressure of the intake pipe 3 is less than the set negative pressure, the on-off valve is opened to open the turbocharger 4. By using a portion of the air compressed at high temperature and high pressure to the rear end of the air duct 91 through the intake bypass pipe (5) to be introduced into the air cleaner (2) Freezing method of air cleaner used.
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