CN109184866A - A kind of improved automotive vent gas treatment ternary catalyzing unit - Google Patents
A kind of improved automotive vent gas treatment ternary catalyzing unit Download PDFInfo
- Publication number
- CN109184866A CN109184866A CN201811338170.5A CN201811338170A CN109184866A CN 109184866 A CN109184866 A CN 109184866A CN 201811338170 A CN201811338170 A CN 201811338170A CN 109184866 A CN109184866 A CN 109184866A
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- China
- Prior art keywords
- sleeve
- solenoid valve
- interlayer
- catalyzing unit
- ternary catalyzing
- Prior art date
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 41
- 239000011229 interlayer Substances 0.000 claims abstract description 41
- 239000000919 ceramic Substances 0.000 claims abstract description 32
- 239000010410 layer Substances 0.000 claims abstract description 20
- 229910000510 noble metal Inorganic materials 0.000 claims description 8
- 238000010992 reflux Methods 0.000 claims description 6
- 239000003054 catalyst Substances 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims description 4
- 229910010293 ceramic material Inorganic materials 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 10
- 238000001514 detection method Methods 0.000 abstract description 4
- 238000009434 installation Methods 0.000 abstract description 4
- 125000004122 cyclic group Chemical class 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 43
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 8
- 239000001301 oxygen Substances 0.000 description 8
- 229910052760 oxygen Inorganic materials 0.000 description 8
- 238000007254 oxidation reaction Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000000153 supplemental effect Effects 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 230000033116 oxidation-reduction process Effects 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000012495 reaction gas Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 229910052703 rhodium Inorganic materials 0.000 description 1
- 239000010948 rhodium Substances 0.000 description 1
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 1
- 238000005201 scrubbing Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N11/00—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity
- F01N11/002—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity the diagnostic devices measuring or estimating temperature or pressure in, or downstream of the exhaust apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/28—Construction of catalytic reactors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N9/00—Electrical control of exhaust gas treating apparatus
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
The present invention relates to intelligent automobile technical fields, and disclose a kind of improved automotive vent gas treatment ternary catalyzing unit, including interlayer housing, thermal insulating layer, interlayer inner sleeve, liner and ceramic monolith, the inner wall fixing sleeve of the interlayer housing is connected to thermal insulating layer, and the inner wall fixing sleeve of the thermal insulating layer is connected to interlayer inner sleeve.The present invention passes through installation return flow solenoid valve and exhaust solenoid valve, operating temperature is detected by temp sensor device and controls the opening and closing of return flow solenoid valve and exhaust solenoid valve, to which by return pipe the work initial stage reclaiming chamber will be guided to without the tail gas of purified treatment, it enters back into reaction sleeve and re-starts purified treatment, this cyclic process is after the temperature of temp sensor device detection reaches initial operating temperature, exhaust solenoid valve conducting, return flow solenoid valve is closed, restore traditional normal operating conditions of ternary catalyzing unit, to solve the problems, such as that the initial stage of exhaust work is directly discharged to atmosphere without the tail gas of purified treatment.
Description
Technical field
The present invention relates to intelligent automobile technical field, specially a kind of improved automotive vent gas treatment ternary catalyzing unit.
Background technique
Ternary catalyzing unit is outer purifier mostly important in automobile exhaust emission system, is often mounted on automobile exhaust
Between manifold and muffler, to by the harmful substance in vehicle exhaust, such as CO, NOX, HC etc. be converted into N2、CO2、HO2Etc. nothings
Evil substance.
As shown in Figure 1, traditional ternary catalyzing unit includes interlayer housing (1), thermal insulating layer (2), interlayer inner sleeve (3), liner
(4) and ceramic monolith (5), the stainless steel outer packed shell in outside of interlayer housing (1), thermal insulating layer (2) are used for heat-insulation and heat-preservation, liner
(4) for expanded by heating to provide sealing performance, while as bumper and absorbing shock layer, the upper surface of ceramic monolith (5) adheres to noble metal
Catalyst such as platinum, rhodium, palladium, when vehicle exhaust passes through ceramic monolith (5), under high-temperature catalysis, CO, NOXWith tri- kinds of HC
The activity of gas is enhanced, and redox reaction is carried out, in which:
CO is oxidized to CO at high temperature2；
HC compound is oxidized to H at high temperature2O and CO2；
NOXIt is reduced into N2And O2。
Noble metal catalyst starting operating temperature on ceramic monolith (5) is 200~300 DEG C, normal working temperature 600
DEG C or so, heat is provided by the high-temperature tail gas that engine is discharged, still, initial rank of traditional ternary catalyzing unit in work
Section, for noble metal catalyst out of, low temperature to 200 DEG C the operating temperature period, tail gas is not react by catalytic oxidation-reduction
And be directly discharged into atmosphere, in the case where automobile usage amount is big, which still seriously affects atmospheric environment matter
Amount, therefore propose a kind of improved automotive ternary catalyzing unit, it is intended to it solves the above problems.
Summary of the invention
For deficiency of the existing ternary catalyzing unit proposed in background technique in tail gas clean-up treatment process, the present invention is mentioned
For a kind of improved automotive vent gas treatment ternary catalyzing unit, have that initial stage tail gas is back-flow scrubbing, oxygen supply abundance is to protect
The complete advantage of oxidation reaction is demonstrate,proved, it is straight without purified treatment to solve exhaust initial stage tail gas mentioned above in the background art
Run in the problem of putting.
The invention provides the following technical scheme: a kind of improved automotive vent gas treatment ternary catalyzing unit, including outside interlayer
The inner wall fixing sleeve of set, thermal insulating layer, interlayer inner sleeve, liner and ceramic monolith, the interlayer housing is connected to thermal insulating layer, described
The inner wall fixing sleeve of thermal insulating layer is connected to interlayer inner sleeve, and the inner wall of the liner, which is fixed, is bonded with ceramic monolith, in the interlayer
One end fixing sleeve of set inner cavity is connected to connecting tube, the exhaust manifold of the other end connection engine of the connecting tube, the interlayer
One end of inner sleeve inner wall is fixedly connected with reaction sleeve, and the other end of the reaction sleeve is fixedly connected with demarcation plate, and described point
The outer wall of partition and the inner wall of interlayer inner sleeve are fixedly attached, and the inner wall fixing sleeve of the reaction sleeve is connected to liner, the reaction
The cavity that the outer wall and demarcation plate, interlayer inner sleeve of sleeve surround is set as reclaiming chamber, and the inside fixing sleeve of the demarcation plate is connected to back
The inner cavity for reacting sleeve is connected to by flow tube, the return pipe with reclaiming chamber, and the end of the return pipe is fixedly installed with reflux electricity
Magnet valve, the inside of the demarcation plate and be located at return pipe below fixing sleeve be connected to escape pipe, the escape pipe will react sleeve
Inner cavity is connected to the gas outlet of ternary catalyzing unit, and the end of the escape pipe is fixedly installed with exhaust solenoid valve, the reaction set
It is fixedly installed with gas-guide tube above the outer wall of cylinder and close to one end of connecting tube, the gas-guide tube is by the inner cavity for reacting sleeve and returns
It receives chamber to be connected to, is fixedly installed with high-temp pressure sensor below the outer wall of the reaction sleeve and close to one end of connecting tube, institute
It states above the outer wall of reaction sleeve and is fixedly installed with temp sensor device close to ceramic monolith side.
Preferably, the outer wall of the interlayer housing is fixedly installed with compensation pipe, and compensates pipe through interlayer housing, insulation folder
Reclaiming chamber is simultaneously connected to by layer and interlayer inner sleeve with outside atmosphere, and check-valves is fixedly installed at the top of the compensation pipe, described to stop
The unidirectional air guide direction for returning valve is by outside atmosphere to reclaiming chamber.
Preferably, the bottom that the gas-guide tube protrudes into reaction sleeve sets inclination bevel shape, and groove is carried towards ceramics
The side of body.
Preferably, the high-temp pressure sensor and temp sensor device are divided into the left and right sides of ceramic monolith, and
High-temp pressure sensor is close to tail gas inlet end, and temp sensor device is close to the outlet side of tail gas.
Preferably, the temp sensor device is made of T-bolt, temperature sensor ontology and hemisphere shield, institute
The outside of T-bolt is stated connect with the siding thread seal of reaction sleeve, the bottom end of the T-bolt be fixedly installed with hemisphere
The inside of shield, the hemisphere shield is equipped with temperature sensor ontology.
Further, the hemisphere shield is made of ceramic material, and coating noble metal on its thickness and ceramic monolith
The thickness of catalyst is identical.
Preferably, the internal diameter of the return pipe and escape pipe is identical as the internal diameter of connecting tube.
Preferably, the signal output end of the high-temp pressure sensor and temp sensor device is electrically connected operation amplifier
The signal input part of device, the input terminal of the signal output end electrical connection A/D converter of the operational amplifier, the A/D conversion
The input terminal of the output end electrical connection Micro-processor MCV of device, the output end of the Micro-processor MCV are electrically connected reflux electromagnetism
The input terminal of valve and exhaust solenoid valve
The present invention have it is following the utility model has the advantages that
1, the present invention is by installation return flow solenoid valve and exhaust solenoid valve, simultaneously by temp sensor device detection operating temperature
Control return flow solenoid valve and exhaust solenoid valve opening and closing, thus by return pipe by work tail gas of the initial stage without purified treatment
It is guided to reclaiming chamber, enters back into reaction sleeve and re-starts purified treatment, this cyclic process is until temp sensor device is examined
After the temperature of survey reaches initial operating temperature, exhaust solenoid valve conducting, return flow solenoid valve is closed, and restores the tradition of ternary catalyzing unit
Normal operating conditions, so that the initial stage for solving exhaust work is directly discharged to asking for atmosphere without the tail gas of purified treatment
Topic.
2, the present invention detects the gas pressure in reaction sleeve by high-temp pressure sensor by setting high-temp pressure sensor
Force value, and react sleeve in gas pressure value reach predetermined value when, by Micro-processor MCV control exhaust solenoid valve power-off beat
It opens, pressure release discharge is carried out to gas in reaction sleeve, this device can prevent detection device temp sensor device or control equipment
Return flow solenoid valve failure or in view of ceramic monolith be preheated to the initial operating temperature period it is too long when, cause react sleeve in
Air pressure is raised in reaction sleeve caused by gas is gathered because of reflux happens, because when air pressure force value is greater than the exhaust of engine
When power, resistance can be caused to the exhaust of engine, reduce engine output power even because be vented it is obstructed caused by engine
Damage, so that the equipment fault operation that is set as of high-temp pressure sensor provides one of safety precautions.
3, the present invention guarantees outside atmosphere by mending by setting compensation pipe and check-valves by the unidirectional air conduction performance of check-valves
Pipe supplemental oxygen into reaction sleeve is repaid to urge to guarantee the HC compound oxygen required in oxidation relative to traditional ternary
Change device to compare using a small amount of oxygen offer oxidation reaction raw material in engine discharge tail gas, the application is capable of providing more sufficient
Oxygen so that the thorough progress of oxidation reaction, further increases tail gas clean-up process performance.
Detailed description of the invention
Fig. 1 is traditional ternary catalystic device structure diagrammatic cross-section；
Fig. 2 is structure of the invention diagrammatic cross-section；
Fig. 3 is temp sensor device schematic diagram of the present invention；
Fig. 4 is gas-guide tube enlarged diagram of the present invention；
Fig. 5 is present system control block diagram.
In figure: 1, interlayer housing；2, thermal insulating layer；3, interlayer inner sleeve；4, it pads；5, ceramic monolith；6, connecting tube；7, anti-
Answer sleeve；8, demarcation plate；9, return pipe；10, escape pipe；11, return flow solenoid valve；12, exhaust solenoid valve；13, gas-guide tube；14,
High-temp pressure sensor；15, temp sensor device；151, T-bolt；152, temperature sensor ontology；153, hemisphere protects
Cover；16, compensation pipe；17, check-valves；18, operational amplifier；19, A/D converter；20, Micro-processor MCV.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Please refer to Fig. 2-5, a kind of improved automotive vent gas treatment ternary catalyzing unit, including interlayer housing 1, thermal insulating layer
2, interlayer inner sleeve 3, liner 4 and ceramic monolith 5, the inner wall fixing sleeve of interlayer housing 1 are connected to thermal insulating layer 2, thermal insulating layer 2 it is interior
Wall fixing sleeve is connected to interlayer inner sleeve 3, and the inner wall fixation for padding 4 is bonded with ceramic monolith 5, and one end of 3 inner cavity of interlayer inner sleeve is fixed
It is socketed with connecting tube 6, the exhaust manifold of the other end connection engine of connecting tube 6, one end of 3 inner wall of interlayer inner sleeve is fixedly connected
There is reaction sleeve 7, the other end of reaction sleeve 7 is fixedly connected with demarcation plate 8, the outer wall of demarcation plate 8 and the inner wall of interlayer inner sleeve 3
It is fixedly attached, the inner wall fixing sleeve of reaction sleeve 7 is connected to liner 4, and the outer wall of reaction sleeve 7 is enclosed with demarcation plate 8, interlayer inner sleeve 3
At cavity be set as reclaiming chamber, the inside fixing sleeve of demarcation plate 8 is connected to return pipe 9, return pipe 9 will react the inner cavity of sleeve 7 with
Reclaiming chamber connection, the end of return pipe 9 are fixedly installed with return flow solenoid valve 11, the inside of demarcation plate 8 and are located at 9 lower section of return pipe
Fixing sleeve is connected to escape pipe 10, and the inner cavity for reacting sleeve 7 is connected to by escape pipe 10 with the gas outlet of ternary catalyzing unit, escape pipe 10
End be fixedly installed with exhaust solenoid valve 12, react above the outer wall of sleeve 7 and be fixedly installed with close to one end of connecting tube 6
The inner cavity for reacting sleeve 7 is connected to by gas-guide tube 13, gas-guide tube 13 with reclaiming chamber, is reacted below the outer wall of sleeve 7 and close to connection
One end of pipe 6 is fixedly installed with high-temp pressure sensor 14, reacts above the outer wall of sleeve 7 and solid close to 5 side of ceramic monolith
Dingan County is equipped with temp sensor device 15.
Wherein, the outer wall of interlayer housing 1 is fixedly installed with compensation pipe 16, and compensates pipe 16 through interlayer housing 1, insulation folder
Reclaiming chamber is simultaneously connected to by layer 2 and interlayer inner sleeve 3 with outside atmosphere, and the top of compensation pipe 16 is fixedly installed with check-valves 17, non-return
The unidirectional air guide direction of valve 17 is by outside atmosphere to reclaiming chamber, when equipment runs well, return flow solenoid valve 11 is closed, non-return
Valve 17 is in one-way conduction state always, and when air pressure is less than external pressure in reclaiming chamber, then oxygen replenishment enters, on the contrary then do not mend
It fills, and the bottom of gas-guide tube 13 is in negative pressure cavity state under automobile engine operating condition always due to bernoulli principle, when
It recycles cavity pressure and is higher than negative pressure cavity pressure, then recycle intracavity gas and enter in reaction sleeve 7, when recycling intracavity gas is gradually
When reaching negative pressure cavity pressure, outside air supplements air pressure to reclaiming chamber, therefore between the inner cavity and reclaiming chamber of reaction sleeve 7 always
In dynamic air pressure dynamic balance.
Wherein, the bottom that gas-guide tube 13 protrudes into reaction sleeve 7 sets inclination bevel shape, and groove is towards ceramic monolith 5
Side, by the way that the bottom of gas-guide tube 13 is set as bevel shape so that the gas flow rate of 13 bottom of gas-guide tube be higher than gas-guide tube
The gas flow rate at 13 tops, according to hydromechanical bernoulli principle, the big local gas pressure intensity of gas flow rate is small, therefore in air guide
Negative pressure cavity is formed on the bottom of pipe 13, so that the oxygen flow direction that ensure that exhaust gas and compensate at pipe 16 is stable from reclaiming chamber warp
Entered in reaction sleeve 7 by gas-guide tube 13, without 13 suck-back phenomenon of gas-guide tube occurs, to ensure that gas flows in equipment
One way stable, convenient for waste gas purification handle.
Wherein, high-temp pressure sensor 14 and temp sensor device 15 are divided into the left and right sides of ceramic monolith 5, and high
Temperature and pressure force snesor 14 is close to tail gas inlet end, and temp sensor device 15 is close to the outlet side of tail gas, high-temp pressure sensor
14 and temp sensor device 15 position setting, may make high-temp pressure sensor 14 preferentially detect close to engine end gas
Body pressure to ensure that engine service output is stablized, while may make temp sensor device 15 to detect close to purification knot
The temperature of the ceramic monolith 5 of Shu Duan has reached initial operating temperature with the ceramic monolith 5 for guaranteeing all, can closing volume
Solenoid valve 11 opens exhaust solenoid valve 12.
Wherein, temp sensor device 15 is by T-bolt 151, temperature sensor ontology 152 and 153 groups of hemisphere shield
Connect at the outside of, T-bolt 151 with the siding thread seal of reaction sleeve 7, the bottom end of T-bolt 151 be fixedly installed with
The inside of hemisphere shield 153, hemisphere shield 153 is equipped with temperature sensor ontology 152, and the screw thread by T-bolt 151 is close
Envelope installation is easily installed hemisphere shield 153, and installation is fixed to high-temp pressure sensor 14 in the same way.
Wherein, hemisphere shield 153 is made of ceramic material, and coating noble metal is catalyzed on its thickness and ceramic monolith 5
The thickness of agent is identical, on the one hand, hemisphere shield 153 can protect temperature sensor ontology 152 to cover and influence from dust
Detection accuracy, on the other hand, hemisphere shield 153 is taken material identical as coating noble metal on ceramic monolith 5 and thickness, can be made
The real-time temperature values that the temperature that temperature sensor ontology 152 detects is more nearly noble metal on ceramic monolith 5 are obtained, so that inspection
Measured data is more for authenticity.
Wherein, the internal diameter of return pipe 9 and escape pipe 10 is identical as the internal diameter of connecting tube 6, guarantees return flow solenoid valve 11 or row
Under 12 opening state of pneumoelectric magnet valve, the capacity of return pipe 9 or escape pipe 10 and connecting tube 6 keeps identical, to not influence
The normal discharge of vehicle exhaust.
Wherein, the signal output end of high-temp pressure sensor 14 and temp sensor device 15 is electrically connected operational amplifier
18 signal input part, the input terminal of the signal output end electrical connection A/D converter 19 of operational amplifier 18, A/D converter 19
Output end electrical connection Micro-processor MCV 20 input terminal, the output end of Micro-processor MCV 20 is electrically connected return flow solenoid valve
11 and exhaust solenoid valve 12 input terminal, the analog signal that high-temp pressure sensor 14 and temp sensor device 15 detect passes through
It after operational amplifier 18 amplifies, then via A/D converter 19 is converted into digital signal, then is handled by 20 analysis of Micro-processor MCV
Afterwards, the connecting and disconnecting of the circuit electricity where return flow solenoid valve 11 or exhaust solenoid valve 12 is controlled.
Wherein, the open/close states of return flow solenoid valve 11 and exhaust solenoid valve 12 are by control system of switching on or off electricity, under energized state, reflux
Solenoid valve 11 is opened, and exhaust solenoid valve 12 is closed, and under off-position, return flow solenoid valve 11 is closed, and exhaust solenoid valve 12 is opened, from
And automobile is powered when normally starting, return flow solenoid valve 11 is opened, and exhaust solenoid valve 12 is closed, and is examined to temp sensor device 15
It surveys to preset temperature value, the power-off of return flow solenoid valve 11 is controlled by Micro-processor MCV 20 and is closed, the power-off of exhaust solenoid valve 12 is beaten
It opens, i.e., under motoring condition, return flow solenoid valve 11 is in power off not being lost under energy state with exhaust solenoid valve 12 and work,
When automobile flameout, exhaust solenoid valve 12 is thrown away in power-off opening state, still falls within the flame-out standby mode of automobile tradition, whole equipment
High power consuming portions only the automobile starting period work, to reduce energy consumption.
Working principle of the present invention is as follows:
When automobile flameout, the power-off of return flow solenoid valve 11 is closed, and the power-off of exhaust solenoid valve 12 is opened, when automobile starting, reflux
Solenoid valve 11, which is powered, to be opened, and exhaust solenoid valve 12, which is powered, closes, and is discharged into the high-temperature tail gas in reaction sleeve 7 by connecting tube 6, is passed through
Ceramic monolith 5 preheats ceramic monolith 5, and tail gas is entered in reclaiming chamber by return pipe 9 again, and the tail gas in reclaiming chamber is again by leading
Tracheae 13 enters in reaction sleeve 7, because the gas flow rates in reaction sleeve 7 are higher than the gas flow rates in reclaiming chamber,
According to the bernoulli principle in hydrodynamics, the bottom gas pressure of gas-guide tube 13 is small, and top gas pressure is big, thus in air guide
13 bottom of pipe generates negative pressure cavity, by the gas sucting reaction sleeve 7 in reclaiming chamber, when the temperature that temp sensor device 15 detects
Degree reaches 200 DEG C, and operational amplifier 18 will test after signal amplifies after by the conversion of 19 digital and analogue signals of A/D converter, by micro-
It manages the device MCU20 sending instruction control power-off of return flow solenoid valve 11 to close, exhaust solenoid valve 12, which powers off, to be opened, and tail gas is after heating
5 catalytic treatment of ceramic monolith after by escape pipe 10 be discharged ternary catalyzing unit, during whole service, check-valves 17 is in
Unidirectional open state, the supplemental oxygen into reclaiming chamber.When in equipment return flow solenoid valve 11 or temp sensor device 15 occur
Failure, and return flow solenoid valve 11 can not be opened and closed immediately or when temp sensor device 15 can not normally detect feedback, reaction
Gas pressure in sleeve 7 is gradually increased, and after reaching preset value, is controlled the power-off of exhaust solenoid valve 12 by Micro-processor MCV 20 and is beaten
It opens, air venting in reaction sleeve 7 is discharged.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (8)
1. a kind of improved automotive vent gas treatment ternary catalyzing unit, including interlayer housing (1), thermal insulating layer (2), interlayer inner sleeve
(3), (4) are padded and ceramic monolith (5), the inner wall fixing sleeve of the interlayer housing (1) is connected to thermal insulating layer (2), the insulation
The inner wall fixing sleeve of interlayer (2) is connected to interlayer inner sleeve (3), and the inner wall fixation of the liner (4) is bonded with ceramic monolith (5),
Be characterized in that: one end fixing sleeve of interlayer inner sleeve (3) inner cavity is connected to connecting tube (6), and the other end of the connecting tube (6) connects
The exhaust manifold of logical engine, one end of interlayer inner sleeve (3) inner wall are fixedly connected with reaction sleeve (7), the reaction set
The other end of cylinder (7) is fixedly connected with demarcation plate (8), the outer wall of the demarcation plate (8) and the inner wall fixing sleeve of interlayer inner sleeve (3)
It connects, the inner wall fixing sleeve of reaction sleeve (7) is connected to liner (4), the outer wall of reaction sleeve (7) and demarcation plate (8), folder
The cavity that layer inner sleeve (3) surrounds is set as reclaiming chamber, and the inside fixing sleeve of the demarcation plate (8) is connected to return pipe (9), the reflux
The inner cavity for reacting sleeve (7) is connected to by pipe (9) with reclaiming chamber, and the end of the return pipe (9) is fixedly installed with return flow solenoid valve
(11), the inside of the demarcation plate (8) and be located at return pipe (9) below fixing sleeve be connected to escape pipe (10), the escape pipe
(10) inner cavity for reacting sleeve (7) is connected to the gas outlet of ternary catalyzing unit, the end of the escape pipe (10) is fixedly mounted
Have exhaust solenoid valve (12), is fixedly installed with air guide above the outer wall of reaction sleeve (7) and close to the one end of connecting tube (6)
It manages (13), the inner cavity for reacting sleeve (7) is connected to by the gas-guide tube (13) with reclaiming chamber, under the outer wall of reaction sleeve (7)
One end of side and close connecting tube (6) is fixedly installed with high-temp pressure sensor (14), above the outer wall of reaction sleeve (7)
And temp sensor device (15) are fixedly installed with close to ceramic monolith (5) side.
2. a kind of improved automotive vent gas treatment ternary catalyzing unit according to claim 1, it is characterised in that: the folder
Layer housing (1) outer wall be fixedly installed with compensation pipe (16), and compensate pipe (16) through interlayer housing (1), thermal insulating layer (2) and
Reclaiming chamber is simultaneously connected to by interlayer inner sleeve (3) with outside atmosphere, is fixedly installed with check-valves (17) at the top of the compensation pipe (16),
The unidirectional air guide direction of the check-valves (17) is by outside atmosphere to reclaiming chamber.
3. a kind of improved automotive vent gas treatment ternary catalyzing unit according to claim 1, it is characterised in that: described to lead
The bottom that tracheae (13) protrudes into reaction sleeve (7) sets inclination bevel shape, and groove is towards the side of ceramic monolith (5).
4. a kind of improved automotive vent gas treatment ternary catalyzing unit according to claim 1, it is characterised in that: the height
Temperature and pressure force snesor (14) and temp sensor device (15) are divided into the left and right sides of ceramic monolith (5), and high temperature pressure passes
Sensor (14) is close to tail gas inlet end, and temp sensor device (15) is close to the outlet side of tail gas.
5. a kind of improved automotive vent gas treatment ternary catalyzing unit according to claim 1, it is characterised in that: the temperature
Degree sensor device (15) is made of T-bolt (151), temperature sensor ontology (152) and hemisphere shield (153), the T
The outside of type bolt (151) is connect with the siding thread seal of reaction sleeve (7), the bottom end of the T-bolt (151) and fixation
It is equipped with hemisphere shield (153), the inside of the hemisphere shield (153) is equipped with temperature sensor ontology (152).
6. a kind of improved automotive vent gas treatment ternary catalyzing unit according to claim 5, it is characterised in that: described half
Ball shield (153) is made of ceramic material, and the thickness phase of its thickness and coating noble metal catalyst on ceramic monolith (5)
Together.
7. a kind of improved automotive vent gas treatment ternary catalyzing unit according to claim 1, it is characterised in that: described time
The internal diameter of flow tube (9) and escape pipe (10) is identical as the internal diameter of connecting tube (6).
8. a kind of improved automotive vent gas treatment ternary catalyzing unit according to claim 1, it is characterised in that: the height
The signal output end of temperature and pressure force snesor (14) and temp sensor device (15) is electrically connected the signal of operational amplifier (18)
Input terminal, the input terminal of signal output end electrical connection A/D converter (19) of the operational amplifier (18), the A/D conversion
The output end of the input terminal of output end electrical connection Micro-processor MCV (20) of device (19), the Micro-processor MCV (20) is electric respectively
Connect the input terminal of return flow solenoid valve (11) and exhaust solenoid valve (12).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811338170.5A CN109184866B (en) | 2018-11-12 | 2018-11-12 | Improved three-way catalytic converter for automobile exhaust treatment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811338170.5A CN109184866B (en) | 2018-11-12 | 2018-11-12 | Improved three-way catalytic converter for automobile exhaust treatment |
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| CN109184866B CN109184866B (en) | 2020-12-04 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111828144A (en) * | 2020-06-19 | 2020-10-27 | 潘齐辉 | Improved three-way catalytic converter for automobile exhaust treatment |
| CN112666205A (en) * | 2020-12-30 | 2021-04-16 | 山东东珩胶体材料有限公司 | Three way catalyst converter sealing gasket testing arrangement |
| CN112958885A (en) * | 2021-02-04 | 2021-06-15 | 中国第一汽车股份有限公司 | Welding method of oxygen sensor base |
| CN113565607A (en) * | 2021-08-31 | 2021-10-29 | 吉林大学 | Anti-blocking structure of three-way catalytic converter |
| CN113864032A (en) * | 2021-09-18 | 2021-12-31 | 合肥神舟催化净化器股份有限公司 | Multistage circulating three way catalyst converter for automobile exhaust treatment |
| CN118329472A (en) * | 2024-06-07 | 2024-07-12 | 浙江三元龙兴科技股份有限公司 | High-temperature-resistant detection device and method for three-way catalyst |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111828144A (en) * | 2020-06-19 | 2020-10-27 | 潘齐辉 | Improved three-way catalytic converter for automobile exhaust treatment |
| CN112666205A (en) * | 2020-12-30 | 2021-04-16 | 山东东珩胶体材料有限公司 | Three way catalyst converter sealing gasket testing arrangement |
| CN112666205B (en) * | 2020-12-30 | 2022-09-16 | 山东东珩国纤新材料有限公司 | Three way catalyst converter sealing gasket testing arrangement |
| CN112958885A (en) * | 2021-02-04 | 2021-06-15 | 中国第一汽车股份有限公司 | Welding method of oxygen sensor base |
| CN113565607A (en) * | 2021-08-31 | 2021-10-29 | 吉林大学 | Anti-blocking structure of three-way catalytic converter |
| CN113864032A (en) * | 2021-09-18 | 2021-12-31 | 合肥神舟催化净化器股份有限公司 | Multistage circulating three way catalyst converter for automobile exhaust treatment |
| CN118329472A (en) * | 2024-06-07 | 2024-07-12 | 浙江三元龙兴科技股份有限公司 | High-temperature-resistant detection device and method for three-way catalyst |
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| CN109184866B (en) | 2020-12-04 |
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Effective date of registration: 20201119 Address after: 310018 Room 1004-1006, 17 Block 57, Baiyang Street Science Park Road, Hangzhou Economic and Technological Development Zone, Zhejiang Province Applicant after: Zhejiang Qibo Intellectual Property Operation Co.,Ltd. Address before: 236000 Zhangzhuang, Qiyuhe Village, Yingxi District, Fuyang City, Anhui Province Applicant before: Zhang Zhong |
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Application publication date: 20190111 Assignee: Hangzhou Yunying Technology Co.,Ltd. Assignor: Zhejiang Qibo Intellectual Property Operation Co.,Ltd. Contract record no.: X2021330000739 Denomination of invention: An improved three-way catalyst for automobile exhaust treatment Granted publication date: 20201204 License type: Common License Record date: 20211109 |
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Assignee: Hangzhou Yunying Technology Co.,Ltd. Assignor: Zhejiang Qibo Intellectual Property Operation Co.,Ltd. Contract record no.: X2021330000739 Date of cancellation: 20231124 |