JPH0619786Y2 - Exhaust pipe fluid injector to reduce engine harmful emissions - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to an exhaust device for reducing and cooling exhaust gas, and in particular, it uses a cleaning fluid to remove harmful exhaust gas from an engine with a very simple structure. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an exhaust pipe fluid injector that reduces engine exhaust emissions that reduce and cool exhaust.

[Prior Art] Conventionally, as an exhaust gas treatment technology for purifying or detoxifying an automobile exhaust gas, there are two types of technology: a technology for treating exhaust gas itself and a technology for reducing harmful exhaust gas by improving an engine structure or a combustion method. However, it was common to use both as an effective exhaust system.

As the former technique for treating the exhaust itself, an exhaust gas re-combustion device called a thermal reactor and a catalytic exhaust treatment device using a catalyst are known.

A technique for improving the structure or combustion system of the latter engine to reduce harmful exhaust gas is, for example, a combustion system called a composite vortex combustion system CVCC or a combustion injection pump without directly using a carburetor to direct fuel to a combustion chamber. The direct injection method of injecting is adopted.

[Problems to be Solved by the Invention] However, in the conventional exhaust treatment technology, since the manufacturing cost of the exhaust treatment measures produced is high and the device volume is large, a four-wheeled vehicle with strict exhaust gas regulations is required. Although it has been actively adopted for new cars in particular, it was not applicable to used cars with relatively loose exhaust gas regulations and motorcycles such as motorcycles and scooters.

Further, the conventional two-cycle engine emits a large amount of pollutants and is gradually being adopted, but it can be said that there is no pollution countermeasure for the currently used two-cycle engine.

The present invention is made in view of the above circumstances, and can be mounted on used vehicles and motorcycles such as motorcycles and scooters due to its small and simple structure. The purpose is to provide a vessel.

[Means for Solving the Problems] In order to solve the above problems and achieve a desired object, an exhaust pipe fluid injector for reducing engine harmful exhaust gas according to the present invention stores a cleaning fluid and The upper surface has a fluid filling port for filling the purification fluid, a gas filling port for filling the purification fluid, and an atmospheric pressure holding unit for keeping the internal pressure at least at atmospheric pressure, and the purification fluid is provided below the fluid control unit. A fluid container having an outflow nozzle that flows out toward the engine, a pressure detection nozzle that communicates with an intake action part of the engine, and a pressure response part that opens and closes the valve according to the intake action of the engine, and the outflow of the fluid container An inflow nozzle into which the purifying fluid from the nozzle flows, a circulation hole into which the purifying fluid flowing from the inflow nozzle flows, and a purifying fluid that has passed through the circulation hole. And a pressure response part having an outflow nozzle for outflowing the base toward the joining means, and a connection pipe for connecting the base to the valve body so that the valve body is movable, and a connection for inflowing a purification fluid from the fluid controller. It is effective to include a joining means having a fixing member that fixes the nozzle and the connecting nozzle so as to communicate with the communication hole formed in the exhaust pipe.

It is also convenient if the pressure detection nozzle of the fluid controller communicates with the inside of the exhaust pipe.

Then, it is convenient that the fluid controller attaches a main plug to the flow hole between the inflow nozzle and the connection pipe of the base to open / close the flow hole and adjust the flow rate of the purification fluid.

[Operation] In FIGS. 1 and 2, when the engine E is in the operating state, the intake action is performed in the intake hole E1, so that the pressure inside the pressure response unit 20 having the pressure detection nozzle 21 is higher than the atmospheric pressure. As a result, the valve body 28 is pulled upward by the pressure difference generated around the pressure responsive portion 20 to open the flow hole 23a, and the purifying fluid flows out to the joining means 3 attached to the exhaust pipe P. Let At this time,
Since the engine E is in the operating state, the air pressure inside the exhaust pipe P is lower than the atmospheric pressure due to the passage of the exhaust gas, and therefore the air pressure inside the fluid container 1 is made at least to the atmospheric pressure by the check valve 12 as the air pressure holding means. In addition to being maintained, the cleaning fluid filled in the fluid container 1 can be injected into the exhaust pipe P at a sufficient flow rate.
Then, as the engine E rotates at a higher speed and the intake action becomes more active, the valve body 28 is pulled upward, so that the flow rate of the purification fluid injected into the exhaust pipe P is automatically adjusted according to the operating state of the engine E. Will be adjusted.
At the same time, the exhaust gas is cooled by the purifying fluid.

[Embodiment] A preferred embodiment of the present invention will be described below with reference to the drawings.

First Embodiment FIG. 1 is a perspective view showing a first embodiment of an exhaust pipe fluid injector for reducing engine harmful exhaust gas according to the present invention.

Referring to FIG. 1, the first embodiment is a fluid container 1 in which an exhaust pipe fluid injector for reducing engine harmful exhaust gas according to the present invention is mounted at a relatively high position of a vehicle (not shown), and It comprises a fluid controller 2 mounted at a position lower than the fluid container 1, and a coupling means 3 mounted on an exhaust pipe P of a vehicle.

The fluid container 1 is filled with a purifying fluid (not shown; water H ₂ O or water H ₂ O with a small amount of additives added is used) for reducing harmful exhaust from the engine E. An inverted L-shaped hollow housing body is provided with an injection cap 10 which is an embodiment of a fluid filling port on the upper surface thereof, and the injection cap 10.
A gas injection hole 11 as one embodiment of a gas filling port provided in the center of the above, and a check valve 12 as one embodiment of an air pressure holding means that allows the air A to pass only in the direction of the arrow are provided. A capacity display means for displaying the remaining amount of the cleaning fluid on a capacity meter of the display panel via an outflow nozzle 13 provided in the hollow portion of the character shape for flowing out the cleaning fluid and a pressure switch provided near the bottom surface thereof ( (Not shown).

The injection cap 10 is detached when the cleaning fluid is a liquid and the cleaning fluid is filled inside the fluid container 1. When the cleaning fluid is a gas, the injection cap 10 is fixed to the gas injection hole 11 through the gas injection hole 11. Fill with cleaning fluid.

The check valve 12 allows the air A to flow into the fluid container 1 when the air pressure inside the fluid container 1 becomes lower than the atmospheric pressure, so that the air pressure inside the fluid container 1 is always equal to the atmospheric pressure. When the air pressure inside the fluid container 1 becomes larger than the atmospheric pressure, a closed state is established and the purification fluid is automatically adjusted so as not to leak from the fluid container 1, and the purification fluid is exhausted by a pressure difference as described later. It is configured to smoothly flow into P.

The outflow nozzle 13 guides the purification fluid inside the fluid container 1 to the fluid controller 2 by its own weight by the inflow tube 4 shown by the alternate long and short dash line because the fluid container 1 is mounted at a position higher than the fluid controller 2. However, as will be described later, the inflow of the purifying fluid into the exhaust pipe P is not gravitational action, but the atmospheric pressure mainly inside the fluid container 1 is always kept equal to the atmospheric pressure.
The air pressure inside the exhaust pipe P becomes lower than the atmospheric pressure due to the exhaust action.

The capacity display means including the pressure switch, the display panel capacity meter, and the like belong to the known art, and thus detailed description thereof will be omitted. Of course, when the cleaning fluid is a liquid, the fluid container 1
It is also possible to open a display window (not shown) on the side wall of the device, which is desirable in that the structure can be simplified.

As described above, in the present invention, water H ₂ is used as the purification fluid.
O or water H ₂ O with a small amount of additives added is used, but water H ₂ O is best used as a purification fluid when considering the pollution-free property of water itself and the simplicity of this device. And easy. This is because by mixing water H ₂ O into high-temperature and high-pressure engine harmful exhaust gas, it is possible to convert a part of carbon monoxide in the engine harmful exhaust gas to carbon dioxide and cool the exhaust gas. it is known that can be reduced by the addition of water also for NO _x. Sulfur oxide
For SO _x , a method of mixing fine powder of limestone or slaked lime into water is known as a lime gypsum method as a lime gypsum method. Therefore, in this invention, water or water containing a small amount of an additive, for example, slaked lime, is used as the cleaning fluid. When using a gas as a cleaning fluid, oxygen or ozone is desirable. In the case of oxygen, the total amount of carbon monoxide can be converted to carbon dioxide, and in the case of ozone, the nitrogen oxide substance NO that causes odor is generated. _x and sulfur oxides SO _x can be reduced.

The fluid controller 2 switches the outflow or stoppage of the cleaning fluid in the fluid container 1 in accordance with the operating state of the engine E and adjusts the flow rate. The pressure response unit 20 is of a sealed drum type, and this pressure response unit. A pressure detection nozzle 21 protruding in an inverted L shape so as to communicate with the inside of the pressure responsive section 20 from the upper surface of 20, a connecting pipe 22 extending below the pressure responsive section 20, and a connecting pipe 22 A base 23 having a fixed lower end, and an inflow nozzle 2 provided at one end (left side in the figure) of the base 23 and connected to the other end of the inflow tube 4.
4 and an outflow nozzle 25 provided at the other end (right side in the figure) of the base 23 and connected to one end of the outflow tube 5. That is, the purification fluid is sent from the arrow B direction to the arrow C direction, and further to the arrow D direction.

The coupling means 3 includes a fixing ring 30 attached to an appropriate position of the exhaust pipe P, a screwed pipe joint 31, and a connecting nozzle 32. And the outflow tube 5
The other end (right side) of the cleaning fluid is connected to the connection nozzle 32, and a small-diameter communication hole 30a (see FIG. 3) is opened at a position where the fixing ring 30 of the exhaust pipe P is fixed. Into the exhaust pipe P.

FIG. 2 is a cross-sectional view showing the fluid controller 2. The structure of the fluid controller 2 will be described based on FIGS. 2 and 1.

The pressure response unit 20 includes a pressure housing 20a having a hollow inside.
And a communication port 20b communicating with the pressure detection nozzle 21 on the upper surface.
And a bent portion 2 that is bent and connected to the outer periphery center in a hermetically sealed state.
0c, a connecting opening 20d formed by hanging the opening edge in the center of the lower surface, and a plurality of ventilation holes 20e, 20e, 20e arranged on the lower surface along the opening edge of the connecting opening 20d.
A compression coil spring 26 that is loosely mounted inside the pressure housing 20a, a connecting ring 27 that is fitted into the opening of the connecting opening 20d and connected to the connecting pipe 22, and a base from the bottom of the pressure housing 20a. The valve body 28 is installed over the inside of the table 23.

The connecting ring 27 is provided with a sliding hole 27a at the center thereof to fit and hold the plunger 28a of the valve body 28 so as to be slidable in the vertical direction. And a flange 28b that covers the upper end of the connecting ring 27 and is integrally fixed to the lower end surface of the compression coil spring 26.
Further, the outer peripheral edge of the flange 28b has a pressure housing 20a.
A slight gap d is provided between the inner wall surface and the inner wall surface.

Although not shown in detail in FIG. 1 as well, the pressure detection nozzle 21 communicates with the intake hole E1 of the engine E by the pressure detection tube 6 in this embodiment so that the engine E performs an intake action. Pressure housing 2 in the engine operating state
The inside of 0a is configured to have a pressure lower than atmospheric pressure.

The connecting pipe 22 has a valve portion 28 of the valve body 28 inside the hollow.
c is loosely inserted, and the coupling ring 27
And supports it by screwing it, and at the fastening portion 22b, the base 23
Is stuck to.

The base 23 includes the inflow nozzle 24 and the outflow nozzle 25.
A through hole 23a penetrating therethrough is provided, and a valve seat 23b with which a sharp portion of the lower end of the valve portion 28 is aligned is provided as a recess.

FIG. 3 is an exploded side view showing the coupling means 3.

In FIG. 3, the coupling means 3 includes a fixing ring 30 and
A threaded pipe joint 31 and a connecting nozzle 32 are provided.

The fixing ring 30 is fixed so as to cover the communication hole 30a provided near the engine of the exhaust pipe P, and the nut 3 fixed to the fixing ring 30 by welding or the like.
0b and a fastening portion 30c provided at a position facing the nut 30b.

The screw-in pipe joint 31 is a pipe body having a hollow inside, and a lower bolt 31a thereof is fastened to a nut 30b, and a distal end portion 31b is formed in a communication hole 30a formed in the exhaust pipe P.
It is formed so as to protrude from.

The connecting nozzle 32 has a nut portion 32a screwed into the pipe joint 3
1 is fastened to the upper bolt 31c and the nozzle portion 32
The other end of the outflow tube 5 is connected to b (see FIG. 1).

Operation of First Embodiment Next, the operation of the first embodiment will be described with reference to FIGS. 1 to 3 centering on FIG.

First, when the engine E is in a stopped state, the intake action is not performed in the intake hole E1 of the engine E, so that the inside and outside of the pressure housing 20a become atmospheric pressure, and the flange 28b is connected by the elastic force of the compression coil spring 26. Ring 27
Is pressed against the upper surface of the valve body 28, the tip of the valve portion 28c of the valve body 28 is aligned with the valve seat 23b, and the purification fluid supplied from the direction of the arrow C to the inflow nozzle 24 by the inflow tube 4 is stopped at the valve seat 23b.

Next, when the engine E is in operation, the intake hole E1
Since the internal atmospheric pressure becomes lower than the atmospheric pressure, the atmospheric pressure inside the pressure housing 20a also becomes lower than the atmospheric pressure via the pressure detection tube 6, the pressure detection nozzle 21, and the communication port 20b. Therefore, the air A having the atmospheric pressure enters in the direction of the arrow from the vent holes 20e, 20e ...
8b is pushed up against the elastic force of the compression coil spring 26 to the position shown by the chain double-dashed line by the pressure difference, so the valve portion 28
The tip of c is separated from the valve seat 23b in the flow hole 23a, and the purifying fluid is passed in the direction of arrow D to flow out from the outflow nozzle 25. At this time, although the amount of the purifying fluid flowing into the exhaust pipe P through the tube 5, the connecting nozzle 32, and the communicating hole 30a flowing out by the gravity action is not large, the inside of the exhaust pipe P is exhausted. Since the air pressure inside the exhaust pipe P becomes lower than the atmospheric pressure according to Bernoulli's theorem, the purifying fluid, which is at least equal to the atmospheric pressure by the check valve, vigorously flows into the exhaust pipe P. It will be inflowing, and a sufficient inflow can be secured.

When the engine E is in the high-speed operation state, the intake amount of the intake hole E1 also increases, so that the air pressure inside the pressure housing 20a further decreases and the flange 28b approaches the communication port 28a due to the pressure difference. The distance between the tip of the portion 28c and the valve seat 23b increases, the flow rate of the purification fluid increases, and the inflow amount of the purification fluid flowing into the exhaust pipe P also increases.

On the contrary, when the engine E is stopped, the communication port 28
Since the intake action is not exerted on a, and the air A that has entered the pressure housing 20a little by little through the gap d rapidly makes the inside of the pressure housing 20a equal to the atmospheric pressure and eliminates the pressure difference, the flange 28b is quickly removed. Then, the compression coil spring 26 presses against the upper surface of the connecting ring 27 to align the tip of the valve portion 28c with the valve seat 23b to stop the purification fluid.

Second Embodiment FIGS. 1A and 2A are perspective views showing a second embodiment according to the present invention.

In FIG. 1A, in the second embodiment, the first point is that the other end of the pressure detection tube 6 is connected to the connecting nozzle 32A of the second joining means 3A provided near the engine E of the exhaust pipe P. This differs from the embodiment. With this configuration, the purification fluid flows into the exhaust pipe P and the exhaust gas passes through the exhaust pipe P only when the exhaust gas actually passes through the exhaust pipe P and becomes lower than the atmospheric pressure. As long as it is provided, the purification fluid can be formed so as to flow into the exhaust pipe P.

In FIG. 2A, the fluid controller 2A of the second embodiment.
Differs from the pressure responsive portion 20 of the first embodiment in that a thin airtight diaphragm 20f is stretched between the bent portion 20c of the pressure housing 20a and the flange 28b. With this configuration, the flange 28b near the communication port 28a and the ventilation holes 20e, 20e ...
And a purifying fluid quickly flows into the exhaust pipe P, and the purifying fluid is not purified until after the engine E is stopped and exhaust gas does not pass through the exhaust pipe P. It can be formed so that the supply of the fluid to the inside of the exhaust pipe P is stopped.

Third Embodiment FIG. 2B is a cross-sectional view showing a third embodiment of the fluid controller, and the fluid controller 2A is provided with a main plug 29 for the flow hole 23a between the inflow nozzle 24 and the valve seat 23b.

The main plug 29 includes a rotating part 29a and a spindle 29b.
And a valve portion 29c and a screw portion 29d,
A valve seat 23c is provided at a position corresponding to the flow hole 23a with respect to the valve portion 29c.

Therefore, the main plug 29 can stop the flow of the purification fluid, and can restrict the flow rate to an appropriate flow rate when the flow rate is too high.

The fluid controller 2A is provided with the diaphragm 20f as in FIG. 2A, but may not be provided with the diaphragm 20f shown in FIG.

[Advantages of the Invention] Since the present invention has the configuration described above, it has at least the following effects.

In the exhaust pipe fluid injector of claim 1, since the purification fluid can be injected into the exhaust pipe in accordance with the operating state of the engine with a small and simple structure, it can be mounted on a used car, motorcycle, scooter, and the like. Exhaust heat pollution can be reduced by cooling the exhaust gas.

In the exhaust pipe fluid injector according to claim 2, since the pressure detection nozzle of the fluid controller communicates with the inside of the exhaust pipe,
The purifying fluid can be injected into the exhaust pipe while the exhaust gas is passing through the exhaust pipe.

In the exhaust pipe fluid injector according to claim 3, a main plug is added to the fluid controller to prevent the purifying fluid from flowing into the exhaust pipe when the vehicle is not used, and to provide an appropriate flow rate when the flow rate is too high. Can be adjusted to

[Brief description of drawings]

1 is a perspective view showing a first embodiment relating to the present invention, FIG. 1A is a perspective view showing a second embodiment relating to the present invention, and FIG. 2 is a sectional view showing the fluid controller thereof. FIG. 2A is a sectional view showing a second embodiment of the fluid controller, and FIG. 2B is a sectional view showing a third embodiment of the fluid controller. FIG. 3 is an exploded side view showing the joining means, 1 ... Fluid container, 2 ... Fluid controller, 3 ... Joining means, 4 ... Inflow tube, 5 ... Outflow tube, 6 ... Pressure detection tube , 10 ... injection cap, 11 ... gas injection hole, 12 ... check valve, 13 ... outflow nozzle, 20 ... pressure response part, 21 ... pressure detection nozzle, 22 ... connecting pipe, 23 ... base Table, 24 ... Inflow nozzle, 25 ... Outflow nozzle, 26 ... Compression coil spring, 27 ... Connection ring, 28 ... Valve body, 30 ... Fixing ring, 31 ... Threaded pipe joint, 32 ... Connecting nozzle

Claims (3)

[Scope of utility model registration request] 1. A fluid container for storing a purifying fluid, a fluid controller for injecting the purifying fluid into an exhaust pipe in accordance with an operating state of an engine, and a purifying fluid capable of flowing into the exhaust pipe. And a joining means for connecting the fluid controller and the exhaust pipe to the fluid container, wherein the fluid container has a fluid filling port for filling a purification liquid, a gas filling port for filling a purification gas, and an internal air pressure on an upper surface thereof. At least an atmospheric pressure holding means for keeping the atmospheric pressure or more is provided, and an outflow nozzle for outflowing a purifying fluid toward the fluid controller is provided below the air pressure holding means, and the fluid controller communicates with an intake action portion of an engine. And a pressure responsive portion that opens and closes the valve body according to the intake action of the engine, and the outflow of the fluid container. A base having an inflow nozzle for introducing the purifying fluid from the nozzle, a circulation hole for introducing the purifying fluid flowing in from the inflow nozzle, and an outflow nozzle for ejecting the purifying fluid passing through the circulation hole toward the joining means. A base, and a connection pipe for connecting the pressure responsive unit and the base to the valve body so that the valve body can move, and a main plug for the flow nozzle between the inflow nozzle and the connection pipe of the base. A connecting nozzle for opening and closing the flow hole and adjusting the flow rate of the purifying fluid, wherein the joining means allows the purifying fluid from the fluid controller to flow in, and a communicating hole in which the connecting nozzle is provided in the exhaust pipe. An exhaust pipe fluid injector for reducing engine harmful exhaust gas, comprising: a fixing member that is fixed so as to communicate with the exhaust pipe. 2. A fluid container for storing a purifying fluid, a fluid controller for injecting the purifying fluid into an exhaust pipe in accordance with an operating state of an engine, and a purifying fluid capable of flowing into the exhaust pipe. And a joining means for connecting the fluid controller and the exhaust pipe to the fluid container, wherein the fluid container has a fluid filling port for filling a purification liquid, a gas filling port for filling a purification gas, and an internal air pressure on an upper surface thereof. At least an atmospheric pressure holding means for keeping the atmospheric pressure or more is provided, and an outflow nozzle for outflowing a purifying fluid toward the fluid controller is provided thereunder, and the fluid controller communicates with the inside of the exhaust pipe of the engine to detect pressure. It has a nozzle and occurs in the pressure detection nozzle when exhaust gas passes through the exhaust pipe of the engine. Pressure response portion that opens and closes the valve body by negative pressure, an inflow nozzle that injects the purification fluid from the outflow nozzle of the fluid container, a circulation hole that inflows the purification fluid that has flowed in from the inflow nozzle, and the circulation A base having an outflow nozzle that allows the purifying fluid that has passed through the hole to flow out toward the joining means; and a connecting pipe that movably connects the pressure response unit and the base to the valve body, An engine harmful exhaust gas, characterized in that the joining means has a connecting nozzle through which a purifying fluid from the fluid controller flows and a fixing member for fixing the connecting nozzle so as to communicate with a communication hole formed in the exhaust pipe. Reduce exhaust pipe fluid injector. 3. The fluid controller is provided with a main plug for the flow hole between the inflow nozzle of the base and the connection pipe to open / close the flow hole and adjust the flow rate of the purification fluid. An exhaust pipe fluid injector for reducing engine toxic emissions as claimed in claim 2.