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Title:
THE METHOD OF NEUTRALIZATION OF USED GASES AND REDUCTION OF THE NOISE OF EXHAUST OF INTERNAL COMBUSTION ENGINE AND DEVICE FOR ITS EXECUTION (VARIANTS)
Document Type and Number:
WIPO Patent Application WO/2000/047877
Kind Code:
A1
Abstract:
Method for neutralization of the exhaust gases and exhaust sound suppress of the explosion engine includes supply of the pre-heated air with its further mixing with the exhaust gases and further self-ignition in the burn zone, air gets to the burn zone at the amount of 0,3-0,6 % regarding the amount of the exhaust gases and after-burn them in two stages with the help of blocks of elements in the form of metal rods, burn products of every stage of after-burning are mixed with the pre-heated air and subject to resonant effect with the help of blocks of elements in the form of metal rods. Device for neutralization of the exhaust gases and exhaust suppress of the explosion engine contains cylinder shell (1) with three inserts (2, 3 and 4), in-take (5) and outlet (6) holes, carrying axe (7) with the conic accelerators of the stream (8, 9 and 10) installed at the relevant in-take hole (11, 12 and 13) of every insert (2, 3 and 4), in-take hole (11, 12 and 13) of every insert (2, 3 and 4) supplied with the injectors (14, 15 and 16), and inside of every insert (2, 3 and 4) being installed with the block (19, 20 and 21) of elements in the form of metal rods, with one end being radially fastened on the carrying axe (7).

Inventors:
STAKHNOV KONSTANTIN (KZ)
KHRAPUNOV YEVGENIY (KZ)
KOVASHEV ADILZHAN (KZ)
SPITSYN ANATOLIY (KZ)
Application Number:
PCT/KZ2000/000001
Publication Date:
August 17, 2000
Filing Date:
February 08, 2000
Export Citation:
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Assignee:
STAKHNOV KONSTANTIN (KZ)
KHRAPUNOV YEVGENIY (KZ)
KOVASHEV ADILZHAN (KZ)
SPITSYN ANATOLIY (KZ)
International Classes:
F01N1/14; F01N1/20; F01N3/08; F01N3/26; F01N3/30; (IPC1-7): F01N1/20; F01N3/08
Foreign References:
FR843784A1939-07-10
US5058702A1991-10-22
DE3527243A11987-02-12
RU1460368A
RU1815351C1993-05-15
RU396878A
RU2051279C11995-12-27
Attorney, Agent or Firm:
Kovashev, Adilzhan (Almaty, 3, KZ)
Kovashev, Adilzhan (Almaty, 3, KZ)
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Claims:
CLAIMS
1. Method for neutralization of the exhaust gases and sound suppress of the exhaust of the explosion engine by supply of the preheated air with its further mixing with the exhaust gases and further selfignition in the burn zone, distinguished with the air getting to the burn zone at the amount of 0,30,6% regarding the amount of the exhaust gases, which are preliminary subject to resonant effect with the help of a block of elements in the form of metal rods, and then are delivered to the burn zone and afterburn with the help of another block of elements in form of metal rods.
2. Method for neutralization of the exhaust gases and sound suppress of the exhaust of the explosion engine by supply of the preheated air with further mixing it with the exhaust gases and further selfignition in the burn zone, distinguished with the air being delivered to the burn zone at the amount of % regarding the amount of the exhaust gases and afterburn them in two stages with the help of blocks of elements in form of metal rods, burn products of every stage of after burning are mixed with the preheated air and subject to resonant effect with the help of blocks of elements in form of metal rods.
3. Exhaust gases neutralization device and sound suppress of the exhaust of the explosion engine containing shell (1) with two cylinder inserts (2 and 3), intake (4) and outlet (5) holes distinguished with its containing additional carrying axe (6) with the conic accelerator of the stream (7) and two blocks (8 and 9) of the elements in the form of metal rods, one end being radially fastened at the carrying axe (6), outlet (10) of the first cylinder insert (2) performed in the form of nozzle, accompanied with an injector (11) and connected with the intake hole (12) of the second cylinder insert (3) with the installed conic accelerator of the stream (7), one block (8) of elements in the form of metal rods located in the first cylinder insert (2), and the second block (9)in the second cylinder insert (3).
4. Device according to paragraph 3, distinguished with its containing additional injector (14) installed at the outlet (10) of the first cylinder insert (2).
5. Device for neutralization of the exhaust gases and exhaust sound suppress of the explosion engine containing cylinder shell (1) with two cylinder inserts (2 and 3) of different diameter, installed one into another, intake (4) and outlet (5) holes, distinguished with its containing additional carrying axe (6) with two fastened conic accelerators of the stream (7 and 8) and two blocks (9 and 10) of the elements in the form of metal rods, with one end being radially fastened at the carrying axe (6), outlet (11) end of the first cylinder insert (2) performed in the form of nozzle, supplied with the injectors (12) and connected with the intake hole of the second cylinder insert (3) with the installed conic accelerator of the stream (7), outlet (13) of the second cylinder insert (3) performed in the form of nozzle, supplied with the injectors (14) and connected with the cavity of the shell (1) with the installed conic accelerator of the stream (8), one block (9) of elements in the form of metal rods located in the first cylinder insert (2), the second block (10)in the second cylinder insert (3).
6. Device for neutralization of the exhaust gases and exhaust sound suppress of the explosion engine containing cylinder shell (1) with three inserts (2,3 and 4), in take (5) and outlet (6) holes, distinguished with its containing additional carrying axe (7) with conic accelerators of stream (8,9 and 10), installed at the relevant in take hole (11,12 and 13) of every insert, intake hole (11,12 and 13) of every insert (2,3 and 4) supplied with the injectors (14,15 and 16), outlet end (17) of the first insert (2) performed in the form of nozzle and connected with the intake hole (12) of the second insert (3), and outlet (18) of the second insert (3) performed in the form of nozzle and connected with the intake hole (13) of the third insert (4), inside of each insert (2,3 and 4) contains installed block (19,20 and 21) of the elements in form of metal rods, with one end being radially fastened on the carrying axe (7).
Description:
THE METHOD OF NEUTRALIZATION OF USED GASES AND REDUCTION OF THE NOISE OF EXHAUST OF INTERNAL COMBUSTION ENGINE AND DEVICE FOR ITS EXECUTION (variants) TECHNICAL FIELD Invention shall refer to mechanical engineering, and namely to the systems of production of used gases of internal combustion engine and may be used for neutralization of 10 used gases and reduction of the noise of exhaust.

BACKGROUND ART The method of neutralization of used gases of internal combustion engine by way of turbulization of gases, their ionization, supply air therein and afterburning them in low temperature air plasma is well known. During afterburning of used gases a fuel is additionally supplied to their stream with the formation of plasma and fuel stream (inventor's certificate of the USSR N° 1460368, cl. F 01 N 2/08, 1989).

A necessity of generation of plasma with the help of electrodes and supply of fuel to afterburn gases complicates the method and increases the material expenses to carry it out.

An exhaust device of the internal combustion engine containing an exhaust pipe with two end walls, tangentially located inlet pipe and exhaust pipe, centrally placed on one of the end walls, internal pipe, ejector and a crossover pipe-line is well known, on the other end wall a crossover window is made, an internal pipe is placed in the exhaust pipe with the formation of ring sheet and is supplied with distributor that is installed in one of its end from the side of exhaust pipe, and diaphragm with outlet placed in the other end of internal pipe, crossover pipe-line by one end through outlet of diaphragm and crossover window is connected with the sheet of internal pipe, and by the other end is connected to ejector placed in the exhaust pipe (inventor's certificate of the USSR N2 1815351, cl. F 01 N 3/00, 1993).

This device has a low efficiency of neutralization and does not allow at the same time to reduce the noise of exhaust of internal combustion engine.

The closest suggested options is the method of afterburining of used gases of internal combustion engine by way of supply of pre-heated air with the subsequent equal mixture of it with gases and further self-ignition. The number of air is regulated, maintaining the temperature of combustion within the limits from 950 to 1300 degree C, after combustion expanding of gas is taken place. (Patent of the USSR N 396878, cl. F 01 N 3/00,1974) This method allows only to neutralize used gases, however does not provide reduction of the noise of exhaust, in addition its efficiency of neutralization is low.

The nearest proposed device is a muffler of the noise of exhaust of internal combustion engine containing a cylindrical frame with inlet pipe that is installed in its end wall, outlet, formed by a cylindrical wall of frame, and acoustical chambers formed by cylindrical fixings of various diameters installed one in another, at that fixings are made by lengths increasing to the extent of their removal from the axis of the frame. A device is supplied by the reservoir with water placed in the end wall of the frame from the side of inlet pipe, the bottom of which is made in a perforated way with the cushion adjoining to cylindrical fixings (Patent of the Russian Federation X2 2051279, cl. F 01 N 3/04,1995).

This device is characterized by the complexity of construction because of installation of reservoir with water, the bottom of which is made in perforated way with a cushion.

Availability of the reservoir with water reduces convenience of operation of this device, that in addition, does not allow to neutralize used gases.

DISCLOSURE OF INVENTION The objective of invention shall be development of options of the methods and devices to carry it out that allow at the same time to neutralize used gases and reduce the noise of an internal combustion engine.

The technical effect attained while using an invention-is the simplification of the method of neutralization of used gases and reduction of the noise of exhaust of a internal combustion engine, a increase of efficiency of neutralization and

sound-suppression, as well as convenience of implementation-shall be achieved by the fact that in the method of neutralization of used gases and reduction of the noise of exhaust of a internal combustion engine by way of supply of pre-heated air with its subsequent mixture with the used gases and further spontaneous combustion in the zone of combustion, air is supplied to the zone of combustion in the amount of mass % relative to the number of used gases that preliminary are subject to resonance impact with the help of unit from the elements in the form of metallic rods, and then supply to the zone of combustion and burn up with the help of another unit from the elements in the form of metallic rods.

Simplification of the construction of a device to neutralize used gases and reduction of the noise of exhaust of a internal combustion engine, an increase of efficiency of neutralization and sound-suppression, as well as convenience in the operation is attained by the fact that a device of neutralization of used gases and reduction of exhaust of a internal combustion engine to realize this method contains cylindrical frame with two cylindrical fixings inside, admission opening and outlet and additionally contain load-bearing axis with a conical accelerator of stream and two units from the elements in the form of metallic rods, radially fixed by one end in the load-bearing axis, exhaust end of the first cylindrical fixing is made in the form of jet, is supplied with injector and communicated with admission opening of the second cylindrical fixings with the conical accelerator of stream installed therein, one unit from the elements in the form of metallic rods is placed in the first cylindrical fixing, and the second unit-is in the second cylindrical fixing.

A device may additionally contain injector installed with exhaust end of the first cylindrical fixing.

The second option of a device to realize this option of the method to neutralize used gases and reduce the noise of exhaust of an internal combustion engine contain a cylindrical frame with two cylindrical fixings inside different diameter installed one into another, admission opening and outlet. A proposed device additionally contains a load-bearing axis with two fixed conical

accelerators of stream fixed thereon and two units from elements in the form of metallic rods, radially fixed by one end in the load-bearing axis, exhaust end of the first cylindrical fixing is made in the form of jet, is supplied by injectors and communicated with a sheet of the second cylindrical fixing with conical accelerator of stream installed therein, exhaust end of the second cylindrical fixing is made in the form of jet, is supplied with injectors and communicated with a sheet of the frame with conical accelerator of stream installed therein, one unit from the elements in the form of metallic rods is placed in the first cylindrical fixture, the second unit-in the second cylindrical fixture.

The second option of the method of neutralization of used gases and reduction of the noise of exhaust of an internal combustion engine includes supply of pre-heated air with its subsequent mixture with used gases and further spontaneous ignition/combustion in the zone of combustion that is differentiated by the fact that air is supplied to the zone of combustion in the amount 0,3-0,6 mass % related to the number of used gases and is burnt up them by two stages with the help of units from the elements in the form of metallic rods, products of combustion each of stages are mixed with pre-heated air and are subject to resonance impact with the help of units from the elements in the form of metallic rods.

A device to realize the second option of the method of neutralization of used gases and reduction of the noise of exhaust of an internal combustion engine contains a cylindrical frame with the three fixings inside, admission opening and outlet, a device additionally contains a load-bearing axis with conical accelerators of stream installed with admission opening of each fixings, admission opening each of fixings is supplied with the injector, exhaust end of the first fixture is made in the form of jet and communicated with admission opening of the second fixture, and an exhaust end of the second fixture is made in the form of fixture and communicated with an admission opening of the third fixing, inside of each fixing a unit from the elements in the form of metallic rods, radially fixed by one end in the load-bearing is installed.

Amount of air is mass % relative to the number of used gases shall provide optimum conditions of spontaneous combustion and neutralization of used gases in each of the proposed options of method.

Reduction of the amount of air less than 0,3 mass % shall be resulted in an increase of exhaust of non-burnt out toxic components containing in used gases.

An increase of the amount of air more than 0,6 mass % is not desirable since there is a formation of toxic oxides of nitrogen at the expense of nitrogen containing in surplus of air.

The amount of air in each of the options of a method is regulated by injectors made in the form rings that have the form of truncated cone.

Supplying each of the options of a device of a load-bearing with conical accelerators of stream and units from the elements in the form of metallic rods, radially fixed by one end in the load-bearing axis, allows to increase efficiency of neutralization and sound-suppression.

Conical accelerators of stream promote to the formation of circular stream of mixture of pre-heated air and used gases that will create a favorable aerodynamic regime, improve conditions of turbulization of stream and mixing, as a result there is more equal afterburning unburnt toxic components.

Installation of units from the elements in the form of metallic rods performing a role of resonators, shall ensure an additional neutralization of used gases, since unfixed ends of rods make oscillations, close to oscillations of particles of used gases and toxic components, and destroy them.

Units from the elements in the form of metallic rods promote also to efficient sound-suppression at the expense of damping impact on stream that consists of a mixture of pre-heated air and used gases or products of after burning.

BRIEF DESCRIPTION OF DRAWINGS Figure 1 outlines a device of neutralization of used gases and reduction of the noise of exhaust of an internal combustion engine to realize the first option of the method, slit; Figure 2-the same, but with the two injectors; Figure 3-is the

second option of a device to realize the first option of the method, slit; Figure 4- device to realize the second option of the method of neutralization of used gases and reduction of exhaust noise of an internal combustion engine, slit.

MODE (S) FOR CARRYING OUT THE INVENTION The first option of a device to implement the first option of the method of neutralization of used gases and reduction of exhaust noise of an internal combustion engine contains a cylindrical frame 1 with the two cylindrical fixings 2 and 3 inside, admission opening 4 and outlet 5, load-bearing axis 6 with conical accelerators of stream 7 and two units 8 and 9 from the elements in the form of metallic rods, radially fixed by one end in the load-bearing axis 6. An exhaust end 10 of the first cylindrical fixing 2 is made in the form of jet, is supplied by the injector 11 and communicated with admission opening 12 of the second 3 cylindrical fixing with a conical accelerator of stream 7 installed therein. One unit 8 from the elements in the form of metallic rods is placed in the first 2 cylindrical fixing, and the second unit 9-is in the second cylindrical fixing 3. A frame has an openings 13 for supply of air from atmosphere.

A device may additionally contain an injector 14 installed with an exhaust end 10 of the first cylindrical fixing 2.

The second option of a device to implement the first option of the method of neutralization of used gases and reduction of exhaust noise of an internal combustion engine contains a cylindrical frame 1 with two cylindrical fixings 2 and 3 of various diameter installed one into another, an admission opening 4 and outlet 5, load-bearing axis 6 with the two conical accelerators of stream 7 and 8 fixed thereon and two units 9 and 10 from the elements in the form of metallic rods, radially fixed by one end in the load-bearing axis. An exhaust end 11 of the first cylindrical fixing 2 is made in the form of jet, is supplied with injectors 12 and communicated with an admission opening of the second cylindrical fixing 3 with a conical accelerator of stream 7 installed therein. An exhaust end 13 of the second cylindrical fixing 3 is made in the form jet, is supplied with injectors 14 and communicated with a sheet 15 of a frame 1 with a conical accelerator of

stream 8 installed therein. One unit 9 from the elements in the form of metallic rods is placed in the first cylindrical fixing 2, the second unit 10 is placed in the second cylindrical fixing 3.

A device of neutralization of used gases and reduction of exhaust noise of an internal combustion engine to implement the second option of the method contains a cylindrical frame 1 with the three fixings 2,3,4 inside, an admission opening 5 and outlet 6, load-bearing 7 with conical accelerators of stream 8,9,10 installed with an appropriate admission opening 11,12,13 each of fixings. An admission opening 11,12,13 of each fixing 2,3 and 4 is supplied with injectors 14,15 and 16 correspondingly, An exhaust end 17 of the first fixing 2 is made in the form of jet and communicated with an admission opening 12 of the second fixing 3, an exhaust end 18 of the second fixing 3 is made in the form of jet and communicated with an admission opening 13 of the third fixing 4. Inside of each fixing 2,3,4 a unit 19,20,21 is installed from the elements in the form of metallic rods, radially fixed by one end in the load-bearing axis 7. A frame is supplied with openings 22 to supply air.

Carrying out the first option of the method and the work of a device is made in the following way.

Example 1. In the first option of a device, stream of used gases through an admission opening 4 is entered the first cylindrical fixing 2. Unfixed ends of rods of the first unit 8 under the influence of stream of used gases make oscillations and perform the role of resonators. With the frequency of oscillation of rods close to frequency of own oscillations of the system, in this case particles of used gases containing toxic components, amplitude of forced oscillation, particles of used gases and toxic substances starts exceeding much a statical mixture that results to their destruction.

While output of gas flow from the first cylinder insert 2 its speed increases at the expense of performance of the outlet 10 in the form of nozzle. It creates exhausting at this site and air is drawn in through holes 13 and injector 11. Air, drawn from the atmosphere through injector 11 is heated inside shell 1 at the expense of contact with cylinder insert 2 up to temperature of 400°C and is

received in admixture with the exhaust gases in the form of ring-shaped stream, formed conic accelerator 7 to cylinder insert 3. Amount of air equal to 0,3 % regarding the amount of exhaust gases is regulated with the help of injector 11.

Injector 14 is installed additionally if necessary.

Regulation of the air temperature for supply is conducted by changing the length of the first cylinder insert 2.

While passage of the admixture of exhaust gases with the preheated air to the cylinder insert 3 which forms combustion zone, a stream is turbulizated at the expense of increase of section, mixing occurs by metal rods of the block 9 and self-ignition is caused, this is ended with after-burning of unburnt toxic components. Metal rods forming block 9 at the self-ignition of the admixture are heated and provide for the additional after-burning of toxic components and their destruction as the result of resonant effect.

Block 9 of the elements in form of metal rods simultaneously performs the function of damper, because rods decrease the speed of the after-burning products flow, decreasing the exhaust sound. Neutralized exhaust gases get out through the outlet 5.

Example 2. Neutralization method is performed by applying the second variant of the device intended for more contaminated gases.

The flow of exhaust gases through intake hole 4 is received in the first cylinder insert 2, where toxic components are destructed as the result of resonant effect of the metal rods of block 9.

While output from the first cylinder insert 2 the speed of gas flow is increased at the expense of performance of the outlet end 11 of the cylinder insert 2 in the form of nozzle.

Getting mixed with the air heated up to 600°C drawn in from the atmosphere through injectors 12, gas flows in the form of ring-shaped stream created by conic accelerator 7, get into the second cylinder insert 3. Preheated air is delivered at the amount of 0,6 % regarding the amount of exhaust gases. While passage of the admixture of the exhaust gases with the air into the cylinder insert 3, which forms burning zone, stream is turbulized at the expense of increase of

section and mixed with the help of metal rods of block 10. The admixture falls into self-ignition, heating metal elements of the block 10. This is followed with after-burning of the unburnt and non-destructed toxic components at the self- ignition of the admixture and additional after-burning at the expense of glowing metal rods, as well as destruction of the remaining toxic components as the result of resonant effect created by vibrations of metal rods.

At the outlet from the cylinder insert 3 gas flow is mixed with the air drawn in through injectors 14 and in the form of ring-shaped stream created by conic accelerator of stream 8, gets into the cavity of shell 1. This causes dilation of the gas stream and results in violent decrease of speed and gas temperature. Final decrease of the exhaust sound is achieved through loss of speed and decrease of temperature.

Suggested method and variants of device to perform allow increase of the efficiency of neutralization for 75%, and sound-suppress to 50% to compare with the known technical decisions.

Implementation of the second variant and operation of the relevant device are carried out as follows.

Example 3. Exhaust gases flow through the intake hole 5 is received in the first insert 2 in the form of ring-shaped stream created by conic accelerator of the stream 8.

At the expense of acceleration of the exhaust gases flow at this site created is vacuum and the air pre-heated at the expense of contact with the insert 2 and the intake channel with the hole 5 is drawn in through injector 14. The amount of air equal to 0,45% regarding the amount of exhaust gases is regulated with the help of the injector 14.

Changing the length of the insert 2 and the intake channel with the hole 5 perform regulation of the air temperature for supply.

While passage of the admixture of the exhaust gases with the pre-heated air to the cylinder insert 2, which forms burn zone, it creates turbulization of the stream at the expense of increase of section, mixing with the help of metal rods of block 19 and self-ignition of the admixture, with simultaneous after-burning of the

unburned toxic components. Metal rods, which form block 19, at self-ignition, are heated and provide for additional after-burning of the toxic components in the burn zone formed by the insert 2.

At outlet of the gas flow from the first cylinder insert 2 its speed increases at the expense of performing of the outlet end 17 of the insert in the form of nozzle and installation of the conic accelerator of the stream 9. Under pressure (vacuum) is created at this site and pre-heated air is drawn in through injector 15. The air is heated inside the shell 1 at the expense of contact with the insert 2 to the temperature of 400°C and is received in mixture with gases in the form of ring- shaped stream created by conic accelerator of the stream 9 to the insert 3. Loose ends of the rods of the block 20 under effect of the gas flows make vibrations and act as resonators.

When frequency of vibrations of the rods is close to frequency of own vibrations of the system, in this case toxic gas particles that were not completely destructed in the burn zone of the insert 2, the amplitude of the compelled vibrations of toxic particles starts significantly exceeding static displacement which causes destruction of particles.

After outlet from the insert 3 the gas flow is again mixed with pre-heated air, drawn in through the injector 16 and in the form of the ring-shaped stream created by conic accelerator of the stream 10, gets into the cavity of the insert 4.

Created are distention of the gas stream, its mixing with the help of metal rods of the block 21 and decrease of speed and gas temperature and consequent decrease of the sound of exhaust.

Suggested variant of the exhaust gases neutralization method and decrease of the exhaust sound of the explosion engine and device to perform this allow increase of the efficiency of neutralization to 80%, and sound suppress to 60% to compare with the known methods.

INDUSTRIAL APPLICABILITY Suggested variants for devices for neutralization of the exhaust gases and sound suppress of the exhaust of the explosion engine may be installed at the diesel and benzene explosion engines of transport vehicles.

Each variant of the device is made from metal, steel for example.

Implementation of each variant for the exhaust gases neutralization method and sound suppress of the exhaust of the explosion engine are characterized with simplicity of performance, while construction of every device does not require any complicated production technology. Devices are produced with the help of known metal-working tools and machines.