JP2001276545A - Exhaust gas filter device for car - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an exhaust gas filter device for a car to be simply changed over from the inner-city driving to the driving in suburbs and express highways other than the inner-city driving or vice versa. SOLUTION: Exhaust gas G is introduced into a tank main body 4 filled with water. The exhaust gas is exhausted out of an exhaust pipe 6 close to the bottom of the tank main body 4. The water is sufficiently mixed with the exhaust gas by a plurality of stages of the exhaust gas mixing members 9... located above the exhaust pipe.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an exhaust gas filtering device for an automobile.

[0002]

BACKGROUND OF THE INVENTION Automobile emissions cause respiratory illness to residents along city roads, causing significant pollution damage. Conventionally, there have been proposals for removing and reducing harmful components of exhaust gas by improving a catalytic exhaust gas purifier and an engine itself.

[0003]

However, in particular,
In diesel engines for large trucks and large buses, etc., removal of harmful components in exhaust gas was still insufficient. An object of the present invention is to provide an exhaust gas filtering device that can easily purify exhaust gas from a diesel engine such as the above-described heavy trucks and large buses. Also,
It is an object of the present invention to provide a highly practical exhaust gas filtering device that can easily modify an existing automobile and can be easily installed. Another object is to easily control the ON / OFF operation when traveling on an urban road and when traveling on other roads (such as a suburban road or a highway) to prevent pollution of the city and reduce the amount of automobiles. It is an object of the present invention to provide an exhaust gas filtering device capable of achieving both good efficiency of the entire engine and good efficiency.

[0004]

SUMMARY OF THE INVENTION Accordingly, the present invention provides a tank body filled with water, a large number of small holes for ejecting exhaust gas from an automobile engine, and a discharge arranged near the bottom of the tank body. A pipe portion, an exhaust gas mixing plate member having a number of vent holes and provided in a plurality of upper and lower stages in the tank body, a connecting pipe for connecting the discharge pipe portion to an exhaust pipe of a vehicle, and a normal exhaust path. And a switching means for selecting the connection pipe and flowing exhaust gas to one of the connection pipes.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on the illustrated embodiments.

In FIG. 1, E denotes an automobile engine, 1 denotes an exhaust pipe of an engine E forming a normal exhaust path 2, and the exhaust pipe 1 has a muffler 3. Arrow C indicates the direction in which the gas normally discharged from the exhaust pipe 1 (exhaust passage 2) is released. In FIGS. 1 and 2, reference numeral 4 denotes a tank body filled with water, which includes a bottomed cylindrical main body 4a and a circular flat plate-shaped lid 4b. The cover 4b is detachable (openable and closable) with a mounting tool 5 such as a wing bolt or the like.
a is attached to the upper opening in a lid shape. In addition, a sealing material such as an O-ring or a gasket (not shown) is
It is good to interpose between the upper end of a and the lower surface of the lid 4b.

A (exhaust gas) discharge pipe 6 is provided near the bottom of the tank body 4. This discharge pipe section 6
As shown in FIG. 1 to FIG. 3, the exhaust gas G from the automobile engine E
Have many small holes 7.

Further, as shown in FIGS. 1, 2 and 4,
An exhaust gas mixing plate member 9 of a circular flat plate type having a large number of air holes 8 is provided in a plurality of upper and lower stages in the tank body 4. In the illustrated example, four exhaust gas mixing plate members 9 are detachably mounted on receiving members 10 projecting from the inner peripheral surface of the tank body 4. Thereby, there is an advantage that cleaning when soiled becomes easy. In particular, the large number of air holes 8 serve to sufficiently mix exhaust gas and water while mutually rubbing each other, so that harmful components and fine dust in the exhaust gas can be reliably removed with water.

As the exhaust gas mixing plate member 9, a punched metal plate formed by punching the ventilation holes 8 of various shapes, or a net member can be used.

The discharge pipe section 6 has a base end 6a connected to a nut
The connection pipe 11 is fixed to the inner surface of the peripheral wall near the bottom of the tank body 4 by screw connection or the like, and has a backflow prevention part 12 curved in an inverted U-shape in the exhaust pipe 1 (exhaust passage 2) of the automobile. And are communicatively connected.

A water filling prevention valve 13 (or overflow valve) is attached to the upper part (of the peripheral wall) of the tank body 4, and the backflow prevention part 12 is located at a position higher than the valve 13.
The arrangement prevents the backflow of water (when the exhaust gas G is not flowing). If necessary, a blower 14 for forcibly discharging exhaust gas is provided in a part of the connecting pipe 11, and the blower 14 is rotated by an electric motor or the like (not shown) to reliably discharge the exhaust gas G into the tank body 4. To the discharge pipe section 6.

Further, there is provided a switching means M for selecting a normal exhaust path 2 (exhaust pipe 1) and the above-described connecting pipe 11 (tank main body 4) and flowing exhaust gas to one of them. As a specific example, in the exhaust pipe 1 (exhaust passage 2), a branch portion from the connecting pipe 11 is formed.
An on-off valve (switching valve) 16 is interposed at the downstream position of 15, and
The switching means M is provided by providing a mechanical or electrical (electronic circuit) or manual type command unit 17 for turning on / off (opening / closing) the on-off valve 16.

For example, as the command unit 17, an electronic circuit is used, and when the running speed of the automobile becomes a predetermined value or more,
It is determined that the vehicle is traveling at high speed, and the exhaust gas is discharged from the normal exhaust pipe 1 as shown by an arrow C. If the exhaust gas is less than a predetermined value, it is determined that the vehicle is traveling in a city, and is flown to the connecting pipe 11, the discharge pipe section 6, and the tank body 4 side. . Alternatively, the driver's seat (dashboard or the like) is provided with a manual switch for switching between “traveling in the city” and “other roads”.
A {command unit 17} is additionally provided, and when the driver switches the command unit, the on / off valves 16 are switched between “closed” and “open”. At this time, the opening / closing valve 16 may be mechanically connected to the manual switch with a push-pull wire or the like, or the opening / closing valve 16 may be a solenoid type and the manual switch may be an electric ON / OFF switch. It is also preferable to switch the on-off valve 16 between “closed” and “open”.

The on-off valve 16 is provided with a two-way switching valve, for example, at the position of the branch portion 15 in addition to the position shown in FIG. Alternatively, the exhaust gas may be selectively flown.

To further explain, the lid 4b includes:
A discharge section 18 such as an elbow for discharging the purified gas H after purification (filtration) is provided, and a blowing blower 19 is interposed in the discharge section 18 as required. Further, at the position of the discharge section 18, an umbrella member 20 for air collection (suction) is provided on the lid section 4b, and a water inlet 21 and an injection section 22 for medicines are provided on the lid section 4b. Have been. From the chemical or the like injection section 22, a chemical that promotes the dissolution of the exhaust gas G in water and / or a chemical or solution that efficiently absorbs or detoxifies harmful substances and harmful components in the exhaust gas G,
inject.

On the outer surface of the peripheral wall of the tank body 4, a sewage inspection unit 24 is additionally provided. This can be achieved by attaching a transparent glass or plastic pipe vertically and connecting the inside of the tank body 4 with small holes at the upper and lower ends. In addition, it is also possible to comprise with a viewing window.

A drain valve 25 is attached to the bottom of the tank body 4, and when the internal dirt advances in the sewage inspection section 24, the valve 25 is opened at a gas station or a car maintenance shop. The water is drained, and new water is injected from the upper water inlet 21. Also, a lamp 26 indicating that the exhaust gas G is being filtered.
It is also preferable to connect them so as to interlock with the command unit 17 described above.

The shape of the tank body 4 is not limited to a cylindrical shape, but may be a square shape or a box shape. Accordingly, the discharge pipe section 6 and the exhaust gas mixing plate member 9 may have a rectangular shape or the like.

It should be noted that the present invention can be applied to medium to small vehicles and the like, and can be applied to other than diesel engines.

[0020]

According to the present invention, the present invention makes it possible to easily switch between traveling on an intra-urban road such as a highly polluted road in a city and traveling on roads in other suburbs (countries). On the other hand, the efficiency as an automobile can be kept good on average. Since water is mainly used, if the water becomes dirty, it can be easily replaced at a gas station or the like, which is convenient. Further, since the exhaust gas G is ejected from the large number of small holes 7, it is easy to sufficiently mix with the water in the tank body 4, and
Above this, the exhaust gas G and water are further mixed by passing through a large number of air holes 8 and frictional with each other, so that exhaust gas purification is sufficiently and quickly performed.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of an entire configuration showing an embodiment of the present invention.

FIG. 2 is an enlarged sectional view of a main part.

FIG. 3 is a plan view of a main part.

FIG. 4 is a plan view of a main part.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Exhaust pipe 2 Exhaust path 4 Tank main body 6 Discharge pipe part 7 Small hole 8 Vent hole part 9 Exhaust gas mixing plate member 11 Connecting pipe E Engine G Exhaust gas M Switching means

Claims (1)

[Claims] 1. A tank body 4 containing water, a discharge pipe section 6 having a plurality of small holes 7 for ejecting exhaust gas G from an automobile engine E and disposed near a bottom of the tank body 4; Exhaust gas mixing plate members 9 having a large number of vent holes 8 and provided in a plurality of upper and lower stages in the tank body 4 and a connecting pipe 11 for connecting the discharge pipe section 6 to the exhaust pipe 1 of a vehicle.
And a switching means M for selecting an ordinary exhaust path 2 and the connecting pipe 11 to flow exhaust gas G to any one of them.