CN206267982U - Automotive gasoline engine cools down egr system - Google Patents
Automotive gasoline engine cools down egr system Download PDFInfo
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- CN206267982U CN206267982U CN201621219156.XU CN201621219156U CN206267982U CN 206267982 U CN206267982 U CN 206267982U CN 201621219156 U CN201621219156 U CN 201621219156U CN 206267982 U CN206267982 U CN 206267982U
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- egr
- cooler
- pipe
- exhaust gas
- outlet
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- 239000007789 gas Substances 0.000 claims abstract description 55
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 39
- 238000001816 cooling Methods 0.000 claims abstract description 16
- 239000002912 waste gas Substances 0.000 claims abstract description 13
- 239000002826 coolant Substances 0.000 claims abstract description 5
- 230000000712 assembly Effects 0.000 claims abstract description 4
- 238000000429 assembly Methods 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims description 23
- 230000002787 reinforcement Effects 0.000 claims description 19
- 230000000087 stabilizing effect Effects 0.000 claims description 16
- 210000002435 tendon Anatomy 0.000 claims description 12
- 238000005452 bending Methods 0.000 claims description 3
- 238000004080 punching Methods 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000000034 method Methods 0.000 claims 1
- 239000000446 fuel Substances 0.000 abstract description 5
- 238000002485 combustion reaction Methods 0.000 description 6
- 210000002105 tongue Anatomy 0.000 description 6
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 238000005336 cracking Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000003134 recirculating effect Effects 0.000 description 2
- 208000035126 Facies Diseases 0.000 description 1
- 241000233855 Orchidaceae Species 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- -1 inlet manifold Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Exhaust-Gas Circulating Devices (AREA)
Abstract
The utility model automotive gasoline engine cools down egr system,It is related to automobile technical field,Including exhaust gas circulating device and cooling-cycle device,Exhaust gas circulating device includes the exhaust manifold being sequentially connected,EGR air inlet pipe,Cooler for recycled exhaust gas,EGR valve,EGR escaping pipes,Inlet manifold,The engine water outlet that cooling-cycle device is sequentially connected,Cooler water inlet pipe,Cooler for recycled exhaust gas,Vehicle cooling recirculation system,Engine return pipe,Waste gas circulation direction is opposite with coolant loop direction,Exhaust manifold,Cooler for recycled exhaust gas,Inlet manifold,Water pipe bracket is respectively by bolts assemblies in cylinder cap outer surface,The end flanges of EGR air inlet pipe two are connected by bolt with exhaust manifold and cooler for recycled exhaust gas,EGR valve is connected directly between cooler for recycled exhaust gas outlet side by fixing device,The end flanges of EGR escaping pipes two are connected by bolt with EGR valve and inlet manifold.The utility model can effectively reduce vehicle fuel consumption, reduce NOx emission, lifting engine performance.
Description
Technical field
The utility model is related to automobile technical field, more particularly to a kind of automotive gasoline engine cooling egr system.
Background technology
EGR（Waste gas is recycled）It is to introduce a small amount of waste gas return combustion chamber by engine to realize vehicle fuel economy
Property, NOx emission is reduced, and lift engine performance.
The deficiency that the current technology is present：Gasoline engine tradition EGR technology is not cooled down to recirculating exhaust gas.Engine is in combustion
During burning, 830 DEG C or so of high-temperature gas will be produced, if not cooled down to EGR gases, the recirculating exhaust gas of high temperature will add
Hot air inlet, causes the significantly rising of in-cylinder combustion temperature and pressure, counteracts EGR reduction vehicle fuel consumptions and NOx rows
The effect put.In addition engine does not improve compression ratio and ignition energy, then be unfavorable for that engine power is played and oil consumption is further
Reduce.
The content of the invention
The purpose of this utility model is to provide a kind of effectively reduction vehicle fuel consumption, reduces NOx emission, lifted and started
The automotive gasoline engine cooling egr system of machine performance.
The technical scheme that the utility model is used to achieve the above object is：A kind of automotive gasoline engine cooling EGR systems
System, including exhaust gas circulating device and cooling-cycle device, exhaust gas circulating device include the exhaust manifold, the EGR air inlets that are sequentially connected
Pipe, cooler for recycled exhaust gas, EGR valve, EGR escaping pipes, inlet manifold, cooling-cycle device include be sequentially connected engine water outlet,
Circulated with coolant in cooler water inlet pipe, cooler for recycled exhaust gas, vehicle cooling recirculation system, engine return pipe, waste gas circulation direction
In the opposite direction, exhaust manifold, cooler for recycled exhaust gas, inlet manifold, Water pipe bracket are respectively by bolts assemblies in cylinder cap outer surface, EGR
The end flanges of air inlet pipe two are connected by bolt with exhaust manifold and cooler for recycled exhaust gas, and EGR valve is connected directly between by fixing device
Cooler for recycled exhaust gas outlet side, the end flanges of EGR escaping pipes two are connected by bolt with EGR valve and inlet manifold.
Further technical scheme of the present utility model is：The house steward outer end that four branch pipes of exhaust manifold converge is connected with row
Gas manifold outlet flange, EGR collectors are provided with the house steward side converged, EGR collectors include EGR pipe, flange I,
Reinforced sheet, EGR pipe is connected to the outside of house steward, and flange I is connected to EGR pipe outer end, and reinforced sheet is welded on EGR pipe and exhaust manifold
Between outlet flange, one of branch pipe outer wall of exhaust manifold is connected with the support III for supporting EGR air inlet pipe.
Further technical scheme of the present utility model is：The EGR air inlet pipe and EGR escaping pipes include two hold-carryings respectively
Orchid, the pipe being connected between two end flanges, the bellows being disposed in pipe and the travel(l)ing rest being connected to outside pipe.
Further technical scheme of the present utility model is：The travel(l)ing rest is bent to form by one piece of metallic plate punching press, gold
The one end for belonging to plate forms the support set of annular to other end bending inflection, and the extension that bends inwards of the metallic plate both sides of wherein one end sets
There is button side, detain the upper surface of the metallic plate when the metallic plate of the other end is withheld in bracelet, metallic plate two ends joint also sets up
There is the fixed elongated hole simultaneously through opposite position on metallic plate.
Further technical scheme of the present utility model is：The inlet manifold includes pressure stabilizing cavity, and the side of pressure stabilizing cavity is set
Have fresh air passage, the edge of fresh air passage be provided with throttle valve body installing port, the side of pressure stabilizing cavity and be close to
The position of throttle valve body installing port is provided with boss, and boss middle part is provided with the exhaust steam passage being communicated in pressure stabilizing cavity, and waste gas leads to
The axes O 2 in road is more than 90 degree with the angle that the axes O 1 of fresh air passage is formed, and the exhaust steam passage periphery on boss is set
There is the seal groove for installing sealing ring, sealing ring is arranged in seal groove.
Further technical scheme of the present utility model is：The sealing ring includes the body of annular and is provided projectingly at this
The salient point of internal outer surface, the flange I of anti-neglected loading is also arranged in the prominent part of in sealing ring body outer surface, the side of seal groove be provided with
The tongue that flange I is engaged.
Further technical scheme of the present utility model is：The cooler for recycled exhaust gas includes cooler and is connected to cooling
Water inlet pipe and outlet pipe on device, the inlet end of cooler are connected with air inlet air chamber and inlet flange, cold near air inlet air chamber end
But be also associated with support II outside device, the outlet side of cooler is connected with integrated support mechanism, integrated support mechanism include with
The outlet air chamber of cooler connection, the support I, integral type that is connected on the downside of outlet air chamber of integral type be connected to outlet air chamber away from
The outlet flange of cooler one end, outlet flange outer end connection EGR valve, sealing gasket is provided between EGR valve and outlet flange
Piece.
Further technical scheme of the present utility model is：The both sides of support I of the integrated support mechanism are respectively arranged with
Triangle reinforcement, is provided with reinforcement convex tendon, the generally cantilevered of the support II " ├ " at triangle reinforcement both sides of the edge
Structure, the lateral arms upper surface of support II is connected with cooler bottom, the upper end of support II longitudinal direction branch facies medialis brachii and cooler
The lateral surface connection of shell side, the both sides of the support II are respectively arranged with triangle reinforcement, in triangle reinforcement both sides
Edge is provided with reinforcement convex tendon.
Further technical scheme of the present utility model is：A circle is provided with around the passage of the gasket seal can prevent gas
The leakproof convex tendon of body leakage, Anti-error structure is additionally provided with gasket seal side, and it is easy that Anti-error structure is provided in gasket seal edge
It was observed that one piece of flange II at the position.
Further technical scheme of the present utility model is：It is convex taper to be respectively designed with water inlet pipe and outlet pipe ozzle portion
Bulge loop I at one is respectively arranged with pipeline on the inside of the cone boss of platform, water inlet pipe and outlet pipe, water inlet pipe and outlet pipe are remote
Pipe afterbody from cone boss is respectively equipped with bulge loop II away from.
The utility model automotive gasoline engine cooling egr system has the advantages that：
1st, the utility model increases cooling egr system on gasoline engine, can effectively reduce vehicle fuel consumption；
2nd, ignition temperature can be reduced after introducing cooling EGR, therefore reduction is offset with the mode for increasing compression ratio
Pinking, contribute to engine power to play further reduces with oil consumption；
3rd, by increasing engine ignition energy, ignition probability is improved；
4th, EGR valve is integrated on cooler for recycled exhaust gas, has both saved the fixing device of egr system connecting line and EGR valve,
Be conducive to egr system miniaturization, modularization；
5th, by improving the supporting structure of cooler for recycled exhaust gas, using integrated support mechanism working stability, can effectively solve
The problem that cooler easily fails；
6th, inlet manifold throttle valve body installing port and EGR installing ports are located at the same side of pressure stabilizing cavity, and determine that EGR is installed
The position of mouth and angle, by the incorporation time for extending waste gas and fresh air so that fresh air and waste gas can quickly simultaneously
Uniform mixing；
7th, it is not only easy to assembly by the sealing gasket used instead of tradition using sealing ring in inlet manifold, and sealing
Performance is good；
8th, in exhaust manifold design EGR collectors, designed by increasing reinforced sheet, opening for EGR pipe can be effectively reduced
Risk is split, and support I is designed on exhaust manifold branch pipe and fix EGR air inlet pipe, reduce the vibratory output of EGR air inlet pipe；
9th, enter to increase bellows segment in escaping pipe by EGR, fixed support is changed to travel(l)ing rest, can effectively reduce and shake
The problem of Cracking for moving fatigue and producing；
10th, by designing convex tendon and flange II on gasket seal, there is good airproof performance and anti-neglected loading.
The utility model automotive gasoline engine cooling egr system is made further with reference to the accompanying drawings and examples
It is bright.
Brief description of the drawings
Fig. 1 is the structural representation that the utility model automotive gasoline engine cools down egr system；
Fig. 2 is the side view of Fig. 1；
Fig. 3 is the structural representation of EGR air inlet pipe；
Fig. 4 is the structural representation of EGR escaping pipes；
Fig. 5 is travel(l)ing rest enlarged diagram；
Fig. 6 is the sectional view of piston and combustion chamber；
Fig. 7 is the structural representation of exhaust manifold；
Fig. 8 is the structural representation of inlet manifold；
Fig. 9 is the structural representation (not installing sealing ring) of the boss in Fig. 8；
Figure 10 is the A-A directions sectional view of Fig. 9；
Figure 11 is the structural representation of the sealing ring of Fig. 8；
Figure 12 is the structural representation of cooler for recycled exhaust gas；
Figure 13 is the structural representation of the integrated support mechanism of cooler for recycled exhaust gas；
Figure 14 is the structural representation of the support II of cooler for recycled exhaust gas；
Figure 15 is the structural representation of the gasket seal of cooler for recycled exhaust gas；
Figure 16 is the A-A directions section view zoomed-in view of Figure 15；
Figure 17 is the sectional view of the water inlet pipe of cooler for recycled exhaust gas；
Figure 18 is the sectional view of the outlet pipe of cooler for recycled exhaust gas；
Drawing reference numeral explanation：1- cylinder caps, 2- inlet manifold, 3- EGR escaping pipes, 4- Water pipe brackets, 5- water pipe pipe clamps, 6-
EGR valve, 7- coolers for recycled exhaust gas, 8- EGR air inlet pipe, 9- exhaust manifolds, 10- cooler water inlet pipes, 11- engine water outlets,
The end flanges of 12- two, 13- rectilinear tubes, 14- bellowss, 15- travel(l)ing rests, 16- support sets, 17- buttons side, 18- fixes elongated hole, 19-
Support III, 20- EGR pipes, 21- flanges I, 22- reinforced sheets, 23- exhaust manifold outlet flanges, 24- combustion chambers, 25- pistons, 26-
Pressure stabilizing cavity, 27- exhaust steam passages, 28- boss, 29- throttle valve body installing ports, 30- fresh air passages, 31- sealing rings, 32- heat
Plug-in unit, 33- seal grooves, 34- tongues, 35- bodies, 36- salient points, 37- flanges I, 38- supports II, 39- inlet flanges, 40- air inlets
Air chamber, 41- outlet pipes, 42- coolers, 43- water inlet pipes, 45- gasket seals, 46- outlet flanges, 47- integrated supports mechanism,
48- supports I, 49- outlet air chambers, 50- triangle reinforcements, 51- strengthens convex tendon, 52- lateral arms, 53- longitudinal directions support arm, 54-
Flange II, 55- leakproof convex tendons, 56- cone bosses, 57- bulge loops I, 58- bulge loops II.
Specific embodiment
As shown in Figure 1 and Figure 2, the utility model automotive gasoline engine cooling egr system, including exhaust gas circulating device and
Cooling-cycle device, exhaust gas circulating device includes the exhaust manifold 9, EGR air inlet pipe 8, the cooler for recycled exhaust gas 7, EGR valve that are sequentially connected
6th, EGR escaping pipes 3, inlet manifold 2, waste gas circulation route：7 → EGR valve of exhaust manifold 9 → EGR, 8 → coolers for recycled exhaust gas of air inlet pipe 6
3 → inlet manifold of → EGR escaping pipes 2.Cooling-cycle device includes the engine water outlet 11, the cooler water inlet pipe that are sequentially connected
10th, cooler for recycled exhaust gas 7, vehicle cooling recirculation system（Not shown in figure）, engine return pipe, vehicle cooling recirculation system and EGR
The outlet pipe 41 of cooler 7 is connected, and cools down circulation route：10 → cooler for recycled exhaust gas of engine water outlet 11 → cooler water inlet pipe 7
→ vehicle cooling recirculation system → engine return pipe.Waste gas circulation direction is opposite with coolant loop direction.Exhaust manifold 9,
, respectively by bolts assemblies in the outer surface of cylinder cap 1, water pipe pipe clamp 5 is assemblied in water for cooler for recycled exhaust gas 7, inlet manifold 2, Water pipe bracket 4
On pipe holder 4, cooler for recycled exhaust gas water inlet pipe is centrally through the center of water pipe pipe clamp 5.8 liang of end flanges 12 of EGR air inlet pipe by bolt with
Exhaust manifold 9 is connected with cooler for recycled exhaust gas 7, and EGR valve 6 is connected directly between the outlet side of cooler for recycled exhaust gas 7 by fixing device, and EGR goes out
3 liang of end flanges 12 of tracheae are connected by bolt with EGR valve 6 and inlet manifold 2.EGR air inlet pipe and exhaust manifold and cooler it
Between be respectively fitted with gasket seal, gasket seal is equipped between EGR valve and cooler, also filled between EGR escaping pipes and EGR valve
Equipped with gasket seal, the gasket seal at this is identical with the structure of following gasket seal 45.
Please also refer to shown in Fig. 3 to Fig. 5, wherein the EGR air inlet pipe 8 and EGR escaping pipes 3 include two end flanges respectively
12nd, the pipe 13 between two end flanges 12, the bellows 14 being disposed in pipe 13 are connected to and are connected to outside pipe 13
Travel(l)ing rest 15.EGR air inlet pipe 8 is bolted on the support III 19 of exhaust manifold 9, and EGR escaping pipes 3 pass through bolt
It is fixed on cylinder cap 1.The purpose for increasing bellows 14 is to reduce vibration, reduces the cracking risk of EGR air inlet pipe 8.Travel(l)ing rest
15 are bent to form by one piece of metallic plate punching press, and one end of metallic plate forms the support set 16 of annular to other end bending inflection, its
The metallic plate both sides of middle one end bend inwards extension be provided with button side 17, detain when 17 withhold in bracelet the metallic plate of the other end 17
The upper surface of metallic plate, metallic plate two ends joint is additionally provided with fixed elongated hole simultaneously through opposite position on metallic plate
18.EGR air inlet pipe 8 passes through support set 16, and two semicircle lines of centres of fixed elongated hole 18 are vertical with support moving direction, and it is consolidated
Determining bolt passes through fixed elongated hole 18 that travel(l)ing rest 15 is fixed on the support III of exhaust manifold.Travel(l)ing rest 15 is compared to fixed branch
Frame is it is possible to prevente effectively from cause the cracking of EGR air inlet pipe 8 because of vibration.Same mutually isostructural travel(l)ing rest is also fitted with going out in EGR
On tracheae 3, its fixing bolt passes through fixed elongated hole 18 that travel(l)ing rest 15 is fixed on into cylinder cap outer surface, its function and EGR air inlets
Support on pipe 8 is identical.
As shown in fig. 6, improving engine compression ratio by increasing the volume of combustion chamber 24 on the basis of conventional piston.Mesh
The tendentiousness that pinking occurs after preceding gasoline engine miniaturization can be strengthened, the side can only rely on and reduce compression ratio, postponed ignition advance angle
Formula suppresses pinking, ignition temperature is reduced after introducing cooling EGR, therefore offset reduction with the mode of increase compression ratio
Pinking.
Please also refer to shown in Fig. 7, the house steward outer end that four branch pipes of exhaust manifold 9 converge is connected with exhaust manifold outlet
Flange 23, EGR collectors are provided with the house steward side converged, and EGR collectors include EGR pipe 20, flange I 21, strengthen
Piece 22, EGR pipe 20 is connected to the outside of house steward, and flange I 21 is connected to the outer end of EGR pipe 20, and reinforced sheet 22 is welded on the He of EGR pipe 20
Between exhaust manifold outlet flange 23, reinforced sheet 22 ensures that EGR pipe 20 is not in operationally failure.Exhaust manifold 9 its
In branch pipe outer wall be connected with support III 19 for supporting EGR air inlet pipe 8, support III 19 can reduce shaking for EGR air inlet pipe 8
It is dynamic, prevent EGR air inlet pipe 8 from vibrating fatigue occur.
Please also refer to shown in Fig. 8 to Figure 11, the inlet manifold 2 includes pressure stabilizing cavity 26, including pressure stabilizing cavity 26, pressure stabilizing cavity
26 side is provided with fresh air passage 30, and the edge of fresh air passage 30 is provided with throttle valve body installing port 29,
The position of the side of pressure stabilizing cavity 26 and close throttle valve body installing port 29 is provided with boss 28, and the middle part of boss 28 is provided with and is communicated to
Exhaust steam passage 27 in pressure stabilizing cavity 26, exhaust steam passage 27 is used to connect EGR escaping pipes 3.The axes O 2 of exhaust steam passage and fresh sky
The angle that the axes O 1 of gas passage is formed is more than 90 degree, and fresh air and waste gas relative can enter in pressure stabilizing cavity 26, such energy
Fresh air and waste gas is enough set more fully to mix.The periphery of exhaust steam passage 27 on boss 28 is provided with for installing sealing ring
31 seal groove 33, sealing ring 31 is arranged in seal groove 33.Sealing ring 31 includes the body 35 of annular and is provided projectingly
The salient point 36 of the surfaces externally and internally of body 35, the purpose of salient point 36 be in the indentation sealing groove 33 of sealing ring 31 after will not drop out easily.
The flange I 37 of anti-neglected loading is also arranged in the prominent part of in the outer surface of 31 body of sealing ring 35, the purpose of flange I 37 is to prevent sealing ring 31 from leaking
Dress, the side of seal groove 33 is provided with the tongue 34 being engaged with flange I 37, and tongue 34 is arranged on the lateral edges of boss 28 1, sealing
Circle 31 is installed to the flange I 37 of seal groove 33 and is arranged in tongue 34 and outside prominent tongue 34, is easily observed.
Please also refer to shown in Figure 12 to Figure 18, the cooler for recycled exhaust gas 7 includes cooler 42 and is connected to cooler
Water inlet pipe 43 and outlet pipe 41 on 42, the inlet end of cooler 42 are connected with air inlet air chamber 40 and inlet flange 39, are close to
Support II 38, the support II 38 generally cantilevered " ├ " structure, support II are also associated with outside the end cooler 42 of gas air chamber 40
38 upper surface of lateral arms 52 is connected with the bottom of cooler 42, the upper end of support II 38 the longitudinal direction medial surface of support arm 53 and cooler 42
The lateral surface connection of shell side.The outlet side of cooler 42 is connected with integrated support mechanism 47, and integrated support mechanism 47 wraps
Include the outlet air chamber 49, integral type being connected with cooler 42 and be connected to the support I 48, integral type of the downside of outlet air chamber 49 and be connected to
Away from the outlet flange 46 of the one end of cooler 42, the both sides of support I 48 of integrated support mechanism 47 are respectively provided with outlet air chamber 49
There is triangle reinforcement 50, reinforcement convex tendon 51 is provided with the both sides of the edge of triangle reinforcement 50, the both sides of support II 38 set respectively
Triangle reinforcement 50 is equipped with, reinforcement convex tendon 51 is provided with the both sides of the edge of triangle reinforcement 50, can had using this structure
Effect reduces the vibration of cooler 42, reduces the vibration of EGR valve 6.
Cone boss 56 at one are respectively designed with water inlet pipe 43 and the ozzle portion of outlet pipe 41, cone boss 56 can make sebific duct
It is easily assembled.Bulge loop I 57 at one are respectively arranged with the pipeline of the inner side of cone boss 56 of water inlet pipe 43 and outlet pipe 41, should
Place's bulge loop I 57 is used for sebific duct and assembles stop bit.Water inlet pipe 43 and outlet pipe 41 set respectively in the pipe afterbody away from cone boss 56
There are bulge loop II 58 at, bulge loop II 58 is used for the welding positioning of water inlet pipe 43 and outlet pipe 41 at this.
The outer end of outlet flange 46 connects EGR valve 6, and gasket seal 45 is provided between EGR valve 6 and outlet flange 46.It is close
A circle is provided with around the passage of gasket 45 can prevent the leakproof convex tendon 55 of gas leakage, be additionally provided with the side of gasket seal 45
Anti-error structure, Anti-error structure is provided in the edge of gasket seal 45 and easily observes one piece of flange II 54 at the position.After assembling,
Flange II 54 on gasket seal 45 appears in fixed position, and is easily observed that flange II 54, can so prevent pad
Anti-loaded or neglected loading.EGR valve 6 is assembled together by gasket seal 45 with the outlet side of cooler 42, forms cooling egr system, this
Sample had both saved the fixing device of egr system connecting line and EGR valve 6, was conducive to egr system miniaturization, modularization.Waste gas from
Enter at inlet flange 39, air inlet air chamber 40, the inside air flue of cooler 42, outlet air chamber 49 are flowed through, finally from outlet flange 46
Out flow into EGR valve 6；Coolant enters from water inlet pipe 43, flows through the internal water channel of cooler 42, from outlet pipe 41 out.Air-flow
Direction is opposite with water (flow) direction.
Above example is only preferred embodiment of the present utility model, and structure of the present utility model is not limited to above-mentioned implementation
The form that example is enumerated, all any modification, equivalents made within spirit of the present utility model and principle etc., all should include
Within protection domain of the present utility model.
Claims (10)
1. a kind of automotive gasoline engine cools down egr system, including exhaust gas circulating device and cooling-cycle device, and its feature exists
In exhaust gas circulating device includes the exhaust manifold being sequentially connected（9）, EGR air inlet pipe（8）, cooler for recycled exhaust gas（7）, EGR valve（6）、
EGR escaping pipes（3）, inlet manifold（2）, cooling-cycle device includes the engine water outlet that is sequentially connected（11）, cooler enters
Water pipe（10）, cooler for recycled exhaust gas（7）, vehicle cooling recirculation system, engine return pipe, waste gas circulation direction and coolant are circulated
In the opposite direction, exhaust manifold（9）, cooler for recycled exhaust gas（7）, inlet manifold（2）, Water pipe bracket（4）Respectively by bolts assemblies in cylinder
Lid（1）Outer surface, EGR air inlet pipe（8）Two end flanges（12）By bolt and exhaust manifold（9）And cooler for recycled exhaust gas（7）It is connected,
EGR valve（6）Cooler for recycled exhaust gas is connected directly between by fixing device（7）Outlet side, EGR escaping pipes（3）Two end flanges（12）Pass through
Bolt and EGR valve（6）And inlet manifold（2）It is connected.
2. automotive gasoline engine as claimed in claim 1 cools down egr system, it is characterised in that exhaust manifold（9）Four
The house steward outer end that branch pipe converges is connected with exhaust manifold outlet flange（23）, the house steward side converged is provided with EGR and takes gas dress
Put, EGR collectors include EGR pipe（20）, flange I（21）, reinforced sheet（22）, EGR pipe（20）It is connected to the outside of house steward, method
Blue I（21）It is connected to EGR pipe（20）Outer end, reinforced sheet（22）It is welded on EGR pipe（20）With exhaust manifold outlet flange（23）It
Between, exhaust manifold（9）One of branch pipe outer wall be connected with for supporting EGR air inlet pipe（8）Support III（19）.
3. automotive gasoline engine as claimed in claim 1 cools down egr system, it is characterised in that the EGR air inlet pipe（8）
With EGR escaping pipes（3）Include two end flanges respectively（12）, be connected to two end flanges（12）Between pipe（13）, interval setting
In pipe（13）In bellows（14）Be connected to pipe（13）Outer travel(l)ing rest（15）.
4. automotive gasoline engine as claimed in claim 3 cools down egr system, it is characterised in that the travel(l)ing rest（15）
It is bent to form by one piece of metallic plate punching press, one end of metallic plate forms the support set of annular to other end bending inflection（16）, its
The metallic plate both sides of middle one end bend inwards extension be provided with button side（17）, detain side（17）The metallic plate of the other end is withheld in bracelet
Side（17）The upper surface of metallic plate, metallic plate two ends joint is additionally provided with fixation simultaneously through opposite position on metallic plate
Elongated hole（18）.
5. automotive gasoline engine as claimed in claim 1 cools down egr system, it is characterised in that the inlet manifold（2）Bag
Include pressure stabilizing cavity（26）, pressure stabilizing cavity（26）Side be provided with fresh air passage（30）, in fresh air passage（30）Edge
It is provided with throttle valve body installing port（29）, in pressure stabilizing cavity（26）Side and near throttle valve body installing port（29）Position set
There is boss（28）, boss（28）Middle part is provided with and is communicated to pressure stabilizing cavity（26）Interior exhaust steam passage（27）, the axis of exhaust steam passage
（O2）With the axis of fresh air passage（O1）The angle of formation is more than 90 degree, in boss（28）On exhaust steam passage（27）Periphery
It is provided with for installing sealing ring（31）Seal groove（33）, sealing ring（31）It is arranged on seal groove（33）In.
6. automotive gasoline engine as claimed in claim 5 cools down egr system, it is characterised in that the sealing ring（31）Bag
Include the body of annular（35）And be provided projectingly in body（35）The salient point of surfaces externally and internally（36）, in sealing ring（31）Body（35）
Outer surface is also arranged in the prominent part of the flange I of anti-neglected loading（37）, seal groove（33）Side be provided with and flange I（37）The tongue being engaged
（34）.
7. automotive gasoline engine as claimed in claim 1 cools down egr system, it is characterised in that the cooler for recycled exhaust gas（7）
Including cooler（42）Be connected to cooler（42）On water inlet pipe（43）And outlet pipe（41）, cooler（42）Enter
Gas end is connected with air inlet air chamber（40）And inlet flange（39）, near air inlet air chamber（40）End cooler（42）It is outer to be also associated with branch
Frame II（38）, cooler（42）Outlet side be connected with integrated support mechanism（47）, integrated support mechanism（47）Including with
Cooler（42）The outlet air chamber of connection（49）, integral type be connected to outlet air chamber（49）The support I of downside（48）, integral type connect
It is connected on outlet air chamber（49）Away from cooler（42）The outlet flange of one end（46）, outlet flange（46）Outer end connects EGR valve
（6）, in EGR valve（6）With outlet flange（46）Between be provided with gasket seal（45）.
8. automotive gasoline engine as claimed in claim 7 cools down egr system, it is characterised in that the integrated support machine
Structure（47）Support I（48）Both sides are respectively arranged with triangle reinforcement（50）, in triangle reinforcement（50）At both sides of the edge
It is provided with reinforcement convex tendon（51）, the support II（38）Generally cantilevered " ├ " structure, support II（38）Lateral arms（52）
Upper surface and cooler（42）Bottom connects, support II（38）Upper end longitudinal direction support arm（53）Medial surface and cooler（42）Shell one
Side lateral surface connection, the support II（38）Both sides be respectively arranged with triangle reinforcement（50）, in triangle reinforcement
（50）Reinforcement convex tendon is provided with both sides of the edge（51）.
9. automotive gasoline engine as claimed in claim 7 cools down egr system, it is characterised in that the gasket seal（45）
Passage around be provided with a circle and can prevent the leakproof convex tendon of gas leakage（55）, in gasket seal（45）Side is additionally provided with mistake proofing
Structure, Anti-error structure is provided in gasket seal（45）Easily observe one piece of flange II at the position in edge（54）.
10. automotive gasoline engine as claimed in claim 7 cools down egr system, it is characterised in that in water inlet pipe（43）With go out
Water pipe（41）Ozzle portion is respectively designed with cone boss at（56）, water inlet pipe（43）And outlet pipe（41）Cone boss（56）It is interior
Bulge loop I at one is respectively arranged with the pipeline of side（57）, water inlet pipe（43）And outlet pipe（41）Away from cone boss（56）'s
Pipe afterbody is respectively equipped with bulge loop II at（58）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621219156.XU CN206267982U (en) | 2016-11-11 | 2016-11-11 | Automotive gasoline engine cools down egr system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106555715A (en) * | 2016-11-11 | 2017-04-05 | 柳州五菱柳机动力有限公司 | Automotive gasoline engine cools down egr system |
| CN109209687A (en) * | 2018-11-02 | 2019-01-15 | 宁波市鄞州德来特技术有限公司 | Gasoline engine exhaust recirculation line structure |
| CN113389663A (en) * | 2021-08-05 | 2021-09-14 | 重庆鑫源动力制造有限公司 | EGR pipeline system for engine |
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2016
- 2016-11-11 CN CN201621219156.XU patent/CN206267982U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106555715A (en) * | 2016-11-11 | 2017-04-05 | 柳州五菱柳机动力有限公司 | Automotive gasoline engine cools down egr system |
| CN109209687A (en) * | 2018-11-02 | 2019-01-15 | 宁波市鄞州德来特技术有限公司 | Gasoline engine exhaust recirculation line structure |
| CN113389663A (en) * | 2021-08-05 | 2021-09-14 | 重庆鑫源动力制造有限公司 | EGR pipeline system for engine |
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