CN109404184A - A kind of drawing-in type emission reduction loading device for petrol engine - Google Patents
A kind of drawing-in type emission reduction loading device for petrol engine Download PDFInfo
- Publication number
- CN109404184A CN109404184A CN201811582305.2A CN201811582305A CN109404184A CN 109404184 A CN109404184 A CN 109404184A CN 201811582305 A CN201811582305 A CN 201811582305A CN 109404184 A CN109404184 A CN 109404184A
- Authority
- CN
- China
- Prior art keywords
- observation tube
- air inlet
- emission reduction
- loading device
- storage tank
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000009467 reduction Effects 0.000 title claims abstract description 23
- 238000003860 storage Methods 0.000 claims abstract description 22
- 229920003023 plastic Polymers 0.000 claims description 5
- 239000005341 toughened glass Substances 0.000 claims description 5
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims 1
- 238000003780 insertion Methods 0.000 claims 1
- 238000002485 combustion reaction Methods 0.000 abstract description 29
- 239000002671 adjuvant Substances 0.000 abstract description 25
- 230000000694 effects Effects 0.000 abstract description 17
- 239000000446 fuel Substances 0.000 abstract description 5
- 230000006641 stabilisation Effects 0.000 abstract 1
- 238000011105 stabilization Methods 0.000 abstract 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 239000000443 aerosol Substances 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000008246 gaseous mixture Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000000391 smoking effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/0076—Details of the fuel feeding system related to the fuel tank
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/0011—Constructional details; Manufacturing or assembly of elements of fuel systems; Materials therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/0011—Constructional details; Manufacturing or assembly of elements of fuel systems; Materials therefor
- F02M37/0017—Constructional details; Manufacturing or assembly of elements of fuel systems; Materials therefor related to fuel pipes or their connections, e.g. joints or sealings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/0076—Details of the fuel feeding system related to the fuel tank
- F02M37/0082—Devices inside the fuel tank other than fuel pumps or filters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/02—Feeding by means of suction apparatus, e.g. by air flow through carburettors
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
Abstract
A kind of drawing-in type emission reduction loading device for petrol engine, it include: oil storage tank, oiling bolt, pouring orifice, wick rope, oil outlet, Fixed latches, observation tube, crossover sub, flowline and triple valve, it is mounted in automobile engine compartment, Valve EGR outlet end and inlet manifold are connected using triple valve, cooperate the air inlet adjustment valve stabilization on oiling bolt using the wick rope siphonic effect in observation tube, will efficiently be mixed with air in the combustion adjuvant sucking motor intake manifold in oil storage tank, to improve the efficiency of combustion of engine fuel.
Description
Technical field
The present invention relates to auto parts field, specially a kind of drawing-in type emission reduction loading device for petrol engine.
Background technique
The usual thermal efficiency of automobile core petrol engine of mainstream is only 30% or so currently on the market, and the efficiency of burning is
35% or so, it means that the oil spout through fuel injection nozzle forms oily gaseous mixture in cylinder diameter with the air imported by inlet manifold and lights
Still having major part to convert afterwards, invalid thermal energy distributes and not sufficiently combusted fuel generates exhaust gas and the nuisances such as carbon monoxide
Matter is discharged into atmosphere from exhaust pipe.
It is well known that exhaust emissions excess is to cause the principal element of city haze at present, with the manufacture of current engine
Technology, it is difficult to efficiency of combustion is further improved from engine structure, then how to reduce exhaust emissions as current public institute
The important topic of care is carried out adding ethanol petrol reduction exhaust emissions in the oil at this stage or assists gasoline using combustion adjuvant
Engine combustion more sufficiently reduces tail gas harmful substance contents, but the emission reduction effect for adding ethanol petrol is not too much ideal, highest
It is able to achieve 30% or so emission reduction effect；Then need to add the carrying equipment of combustion adjuvant using combustion adjuvant auxiliary, adding equipment then has
The circuit or structure distribution of engine engine, and the equipment one to realize long-acting stable offer combustion adjuvant may be needed to change
As need biggish volume and complicated structure.
Therefore, efficiency of combustion how stable using simple equipment, effectively increasing engine fuel, reduces tail gas
Harmful substance contents are current automobile and the important brainstorm subject of energy conservation and environmental protection industry.
Summary of the invention
The object of the present invention is to provide a kind of emission reduction loading device for petrol engine, can stablize, efficiently to
Engine provides combustion adjuvant.
In order to achieve the above objectives, technical scheme is as follows:
A kind of drawing-in type emission reduction loading device for petrol engine, comprising: oil storage tank, oiling bolt, pouring orifice, wick
The top of rope, oil outlet, Fixed latches, observation tube, crossover sub, flowline and triple valve, the oil storage tank is equipped with pouring orifice
And oil outlet, pouring orifice inner wall have screw thread, oiling bolt and pouring orifice thread connection, the wick rope is inserted into oil storage from oil outlet
Tank to bottom, the other end of wick rope is inserted into observation tube, and observation tube is fixedly connected with oil outlet, and the other end of observation tube passes through
Crossover sub is connect with flowline, and the flowline other end is connect with triple valve, and Fixed latches penetrate observation tube and wick rope is fixed.
The oiling bolt with lower component by being formed: air inlet adjustment valve, lock-screw, leak-proof gasket and air inlet, air inlet
It is fixedly connected at the top of regulating valve and lock-screw, the inlet end of air inlet adjustment valve is equipped with filter core, and air inlet from top to bottom runs through
Lock-screw center, air inlet are docked with the outlet side of air inlet adjustment valve, and the valve port of air inlet adjustment valve is communicated with the atmosphere, leakage proof gasket
Snare is in lock-screw bottom.
The observation tube is made of tempered glass, and observation tube is arc-shaped.
The observation tube is made of transparent plastic, and observation tube is arc-shaped.
Working principle:
The triple valve of drawing-in type emission reduction loading device of the present invention for petrol engine is mounted on the canister electricity of vehicle
Magnet valve outlet end is separately connected former pipeline between air-distributor vacuum tube inlet end, and the other end is connect with flowline, when starting
After machine starting operating, using the negative-pressure sucking generated in inlet manifold, by the siphonic effect of wick rope, (or capillary is imitated
Answer) combustion adjuvant in oil storage tank is realized that its concentration shifts (or gradient transfer), while utilizing the air inlet tune on lock-screw
Save valve regulation air inflow size, form pressure difference with the negative pressure of bottom in observation tube, thus make combustion adjuvant in oil storage tank along
Wick rope is inhaled into the pressure transfer that combustion adjuvant is realized in observation tube, will be through under the negative-pressure sucking effect that inlet manifold generates
It crosses after wick rope siphon and forms the combustion adjuvant of aerosol state and be sent into inlet manifold and mix with air by observation tube and flowline,
Mixed gas is sucked when each cylinder of engine, enables in cylinder mixed oil and gas burning more abundant, subtracts to reach energy conservation
The purpose of row, when the combustion adjuvant in oil storage tank exhausts, user can inject combustion adjuvant from pouring orifice by unscrewing oiling bolt
Screw oiling bolt again afterwards.
The effect of each main component:
Oil storage tank is equipped with pouring orifice and oil outlet since structure is simple and is easily mounted on vapour for storing the device of combustion adjuvant
In car engine storehouse.
Oiling bolt, the oiling bolt has air inlet adjustment valve, air inlet and filter core, so adjusting negative pressure can be played
While effect, inlet end filter core can cross the impurity in air filtering, and oiling bolt is connect with the pouring orifice on oil storage tank, screw out
Can oiling, screwing can prevent combustion adjuvant from revealing or contaminated, simplify oiling process.
Wick rope realizes the concentration of combustion adjuvant in oil storage tank using the siphonic effect (or capillary effect) of wick rope
Transfer, can continue, the combustion adjuvant in oil storage tank is steadily entered observation tube along wick rope band.
Fixed latches prevent wick rope from acting on observation due to negative pressure for fixing the position of wick rope and observation tube
Pipe internal shift can not be pumped to the combustion adjuvant of bottom, influence the emission reduction effect of equipment.
Observation tube is made of tempered glass or transparent plastic, is had good oil-resisting and heat-resisting, is facilitated user's observation lamp
The service condition of core rope and the smoking conditions of combustion adjuvant.
Crossover sub, for connecting observation tube and flowline, flowline majority is made of rubber, can using crossover sub
So that equipment adapts to the rubber flowline of each size.
Triple valve, for connecting the canister of the drawing-in type emission reduction loading device for petrol engine and script automobile
Combustion adjuvant is sent using the negative pressure that inlet manifold generates to the pipeline between air-distributor vacuum tube inlet end at electromagnetic valve outlet end
Enter in engine.
The advantages of the application:
1, the configuration of the present invention is simple, small in size, is easily installed and repairs, do not need substantially to change engine equipment associated therewith
Modular construction and circuit layout.
, the present invention using wick rope with air inlet adjustment valve oiling bolt cooperate, utilize the siphonic effect of wick rope
Pressure difference effect with air inlet adjustment valve, which is realized to stablize to petrol engine, provides the effect of combustion adjuvant, avoids due to suction deficiency
Or the problems such as blocking, leads to not provide combustion adjuvant in time to petrol engine and cannot achieve the effect of emission reduction.
, the present invention installed Fixed latches additional between wick rope and observation tube, can ensure that wick rope will not be made due to negative pressure
Equipment is influenced with displacement to use, and can be easily removed again when needing replacing wick rope.
, the present invention be made of tempered glass or transparent plastic, have good heat-resisting oil resistance, user can pass through sight
Pipe observation oil suction situation and wick rope service condition are examined, the arc-shaped purpose with certain radian of observation tube is to cooperate wick
The siphon effect of rope, and can prevent combustion adjuvant from flowing back.
, emission reduction effect of the invention it is significant, the present invention continually can be provided steadily to petrol engine for a long time
Combustion adjuvant, therefore emission reduction effect reduces by 70% than effluent standard limit value, improves environment-friendly quality, while oil consumption reduces by 10~30%.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the drawing-in type emission reduction loading device for petrol engine；
Fig. 2 is the structural schematic diagram of the oiling bolt；
It is as follows that meaning is respectively identified in figure:
1- oil storage tank；2- oiling bolt；3- pouring orifice；4- wick rope；5- oil outlet；6- Fixed latches；7- observation tube；8- conversion
Connector；9- flowline；10- triple valve；11- air inlet adjustment valve；12- lock-screw；13- leak-proof gasket；14- air inlet；15- filter
Core.
Specific embodiment
Embodiment 1
A kind of drawing-in type emission reduction loading device for petrol engine, comprising: oil storage tank 1, oiling bolt 2, pouring orifice 3, lamp
Core rope 4, oil outlet 5, Fixed latches 6, observation tube 7, crossover sub 8, flowline 9 and triple valve 10, the top of the oil storage tank 1
Equipped with pouring orifice 3 and oil outlet 5,3 inner wall of pouring orifice has screw thread, oiling bolt 2 and 3 thread connection of pouring orifice, the wick rope 4
Oil storage tank 1 is inserted into bottom from oil outlet 5, and the other end of wick rope 4 is inserted into observation tube 7, and observation tube 7 and oil outlet 5 are fixed
The other end of connection, observation tube 7 is connect by crossover sub 8 with flowline 9, and 9 other end of flowline is connect with triple valve 10.
The oiling bolt 2 with lower component by being formed: air inlet adjustment valve 11, lock-screw 12, leak-proof gasket 13 and air inlet
Hole 14, air inlet adjustment valve 11 are fixedly connected with the top of lock-screw 12, and the inlet end of air inlet adjustment valve 11 is equipped with filter core 15, into
Stomata 14 from top to bottom runs through 12 center of lock-screw, and air inlet 14 is docked with the outlet side of air inlet adjustment valve 11, leak-proof gasket
13 sets in 12 bottom of lock-screw.
The observation tube 7 is made of tempered glass, and observation tube 7 is arc-shaped.
The combustion adjuvant selects 250 DEG C of burning point > of material, guarantees stability and safety.
Embodiment 2
A kind of drawing-in type emission reduction loading device for petrol engine, comprising: oil storage tank 1, oiling bolt 2, pouring orifice 3, lamp
Core rope 4, oil outlet 5, Fixed latches 6, observation tube 7, crossover sub 8, flowline 9 and triple valve 10, the top of the oil storage tank 1
Equipped with pouring orifice 3 and oil outlet 5,3 inner wall of pouring orifice has screw thread, oiling bolt 2 and 3 thread connection of pouring orifice, the wick rope 4
Oil storage tank 1 is inserted into bottom from oil outlet 5, and the other end of wick rope 4 is inserted into observation tube 7, and observation tube 7 and oil outlet 5 are fixed
The other end of connection, observation tube 7 is connect by crossover sub 8 with flowline 9, and 9 other end of flowline is connect with triple valve 10.
The oiling bolt 2 with lower component by being formed: air inlet adjustment valve 11, lock-screw 12, leak-proof gasket 13 and air inlet
Hole 14, air inlet adjustment valve 11 are fixedly connected with the top of lock-screw 12, and the inlet end of air inlet adjustment valve 11 is equipped with filter core 15, into
Stomata 14 from top to bottom runs through 12 center of lock-screw, and air inlet 14 is docked with the outlet side of air inlet adjustment valve 11, leak-proof gasket
13 sets in 12 bottom of lock-screw.
The observation tube 7 is made of transparent plastic, and observation tube 7 is arc-shaped.
The combustion adjuvant selects 250 DEG C of burning point > of material, guarantees stability and safety.
Application Example
Applicant tests the application on more private cars, obtain the result is as follows:
As seen from the above table, after the drawing-in type emission reduction loading device described herein for automobile engine being installed, instruction carriage
Fuel consumption per hundred kilometers has significant decrease, and oxynitrides, hydrocarbon and the CO content of exhaust emissions, which have, substantially to drop
It is low.
Claims (4)
1. a kind of drawing-in type emission reduction loading device for petrol engine characterized by comprising oil storage tank (1), oiling spiral shell
Bolt (2), pouring orifice (3), wick rope (4), oil outlet (5), Fixed latches (6), observation tube (7), crossover sub (8), flowline
(9) and triple valve (10), the top of the oil storage tank (1) are equipped with pouring orifice (3) and oil outlet (5), and pouring orifice (3) inner wall has spiral shell
Line, oiling bolt (2) and pouring orifice (3) thread connection, the wick rope (4) is from oil outlet (5) insertion oil storage tank (1) bottom of to
The other end in portion, wick rope (4) is inserted into observation tube (7), and observation tube (7) is fixedly connected with oil outlet (5), observation tube (7)
The other end is connect by crossover sub (8) with flowline (9), and flowline (9) other end is connect with triple valve (10).
2. the drawing-in type emission reduction loading device of petrol engine according to claim 1, which is characterized in that the oiling spiral shell
Bolt (2) with lower component by being formed: air inlet adjustment valve (11), lock-screw (12), leak-proof gasket (13) and air inlet (14), air inlet
It being fixedly connected at the top of regulating valve (11) and lock-screw (12), the inlet end of air inlet adjustment valve (11) is equipped with filter core (15), into
Stomata (14) from top to bottom runs through lock-screw (12) center, and air inlet (14) is docked with the outlet side of air inlet adjustment valve (11),
Leak-proof gasket (13) is covered in lock-screw (12) bottom.
3. the drawing-in type emission reduction loading device of petrol engine according to claim 1, it is characterised in that: the observation tube
(7) it is made of tempered glass, observation tube (7) is arc-shaped.
4. the drawing-in type emission reduction loading device of petrol engine according to claim 1, it is characterised in that: the observation tube
(7) it is made of transparent plastic, observation tube (7) is arc-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811582305.2A CN109404184B (en) | 2018-12-24 | 2018-12-24 | Suction type emission reduction carrying device for gasoline engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811582305.2A CN109404184B (en) | 2018-12-24 | 2018-12-24 | Suction type emission reduction carrying device for gasoline engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109404184A true CN109404184A (en) | 2019-03-01 |
| CN109404184B CN109404184B (en) | 2024-04-19 |
Family
ID=65460599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811582305.2A Active CN109404184B (en) | 2018-12-24 | 2018-12-24 | Suction type emission reduction carrying device for gasoline engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109404184B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115234408A (en) * | 2021-04-23 | 2022-10-25 | 山东垚旭节能环保科技有限公司 | Gasoline car emission reduction increase device |
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| CN102748166A (en) * | 2012-06-26 | 2012-10-24 | 孙东辉 | Watering and oil saving device for internal combustion engine |
| CN203463203U (en) * | 2013-08-23 | 2014-03-05 | 朱宗德 | Air filtering device |
| WO2015196556A1 (en) * | 2014-06-25 | 2015-12-30 | 周裕忠 | Air filtration device |
| CN207499990U (en) * | 2017-11-23 | 2018-06-15 | 李文清 | A kind of induction system of internal combustion engine energy-saving emission-reducing apparatus |
| CN209278038U (en) * | 2018-12-24 | 2019-08-20 | 周伟传 | A kind of drawing-in type emission reduction loading device for petrol engine |
-
2018
- 2018-12-24 CN CN201811582305.2A patent/CN109404184B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1955029A (en) * | 2005-10-28 | 2007-05-02 | 考特克斯·特克斯罗恩有限公司及两合公司 | Fuel tank |
| CN102748166A (en) * | 2012-06-26 | 2012-10-24 | 孙东辉 | Watering and oil saving device for internal combustion engine |
| CN203463203U (en) * | 2013-08-23 | 2014-03-05 | 朱宗德 | Air filtering device |
| WO2015196556A1 (en) * | 2014-06-25 | 2015-12-30 | 周裕忠 | Air filtration device |
| CN207499990U (en) * | 2017-11-23 | 2018-06-15 | 李文清 | A kind of induction system of internal combustion engine energy-saving emission-reducing apparatus |
| CN209278038U (en) * | 2018-12-24 | 2019-08-20 | 周伟传 | A kind of drawing-in type emission reduction loading device for petrol engine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115234408A (en) * | 2021-04-23 | 2022-10-25 | 山东垚旭节能环保科技有限公司 | Gasoline car emission reduction increase device |
| CN115234408B (en) * | 2021-04-23 | 2023-09-29 | 山东垚旭节能环保科技有限公司 | Emission reduction and synergy device of gasoline car |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109404184B (en) | 2024-04-19 |
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