CN106224085B - A kind of under-voltage protection of turbocharger and high pressure drainage device and its working method - Google Patents
A kind of under-voltage protection of turbocharger and high pressure drainage device and its working method Download PDFInfo
- Publication number
- CN106224085B CN106224085B CN201610823465.6A CN201610823465A CN106224085B CN 106224085 B CN106224085 B CN 106224085B CN 201610823465 A CN201610823465 A CN 201610823465A CN 106224085 B CN106224085 B CN 106224085B
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- China
- Prior art keywords
- pressure
- compressor
- gas circuit
- under
- turbocharger
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B39/00—Component parts, details, or accessories relating to, driven charging or scavenging pumps, not provided for in groups F02B33/00 - F02B37/00
- F02B39/16—Other safety measures for, or other control of, pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
- F02B37/12—Control of the pumps
- F02B37/16—Control of the pumps by bypassing charging air
- F02B37/168—Control of the pumps by bypassing charging air into the exhaust conduit
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B39/00—Component parts, details, or accessories relating to, driven charging or scavenging pumps, not provided for in groups F02B33/00 - F02B37/00
- F02B39/16—Other safety measures for, or other control of, pumps
- F02B2039/162—Control of pump parameters to improve safety thereof
- F02B2039/166—Control of pump parameters to improve safety thereof the fluid pressure in the pump or exhaust drive being limited
-
- 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
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Supercharger (AREA)
Abstract
The present invention relates to a kind of under-voltage protection of turbocharger and high pressure drainage devices; the intermediate of turbine and compressor is separately connected including both ends; the first gas circuit of perforation intermediate both ends of the surface is offered on the intermediate; intermediate side offers the second gas circuit communicated with the first gas circuit; it is further opened with stomata positioned at the second gas circuit side; second gas circuit inlet is provided with pressure-failure protector, is connected inside the stomata transtracheal and compressor housings, relief valve is provided on the tracheae；The invention further relates to a kind of under-voltage protection of turbocharger and the working methods of high pressure drainage device.The present invention can be eliminated in different operating mode lower oil cavities and the pressure difference formed between compressor impeller end, prevent the leakage of machine oil, protect booster；When compressor pressure is excessive, pressure release can be played the role of, reduce venting duration, improve efficiency, realize the function of decompression protection.
Description
Technical field
The present invention relates to a kind of under-voltage protection of turbocharger and high pressure drainage device and its working methods.
Background technology
Such phenomenon of the failure can be encountered in driving：Tail gas emits blue smoke to idling when driving, when it is light when weight, machine oil has
Consumption, main cause are armature spindle and the intermediate poor sealing of turbocharger, caused by oil leakage, when machine oil is from calming the anger
When generator terminal leaks, because compressor is connected to air inlet pipe, participate in burning to be brought in engine chamber machine oil, machine oil quilt
Consumption generates blue smog.
It will appear following point when engine oil pressure and underfed：Supply the lubrication shortage of oil of axle journal and thrust bearing：
To make rotor journal and bearing journal keep the lubrication shortage of oil floated；Work as high engine load, when supercharger speed is very high,
Even if several seconds will also result in the damage to TC bearings for shortage of oil, at the same oil leakage cause machine oil waste and
Machine oil cannot effectively form oil film, cause armature spindle that cannot effectively be lubricated, eventually lead to the damage of entire booster.
When drive when to shift gears, emergency brake, closed throttle, turbo blade, compressor impeller under effect of inertia still
Old lasting rotation.At this time because air throttle block with blade continue supercharging caused by, in air inlet pipeline（Air throttle and turbine it
Between）Air pressure can improve rapidly, in compressor pressure need in time decompression, it is no that it will cause turbocharger impairments.
Invention content
In view of this, the object of the present invention is to provide a kind of under-voltage protection of turbocharger and high pressure drainage device and its
Working method prevents oil leak, realizes voltage-reducing protection function.
The present invention is realized using following scheme：A kind of under-voltage protection of turbocharger and high pressure drainage device, including two
End is separately connected the intermediate of turbine and compressor, and the first gas circuit of perforation intermediate both ends of the surface is offered on the intermediate,
Intermediate side offers the second gas circuit communicated with the first gas circuit, and stomata, the second gas are further opened with positioned at the second gas circuit side
Road inlet is provided with pressure-failure protector, is connected inside the stomata transtracheal and compressor housings, is arranged on the tracheae
There is relief valve.
Further, the pressure-failure protector includes the pedestal that inner cavity is communicated with the second gas circuit, and the pedestal inner cavity opens up
There are a slot, the pedestal side to offer the air admission hole being connected with slot, pedestal inner cavity is additionally provided with reciprocating
Rubber stopper, rubber stopper is by moving back and forth and slot cooperation or detaching to realize air admission hole and the disconnection of the second gas circuit or be connected to.
Further, it is provided with airstrainer in the air admission hole；It is also associated with across slot simultaneously on the rubber stopper
Outwardly extending pull rod, pull rod outer end are provided with baffle ring, are arranged on the pull rod and head on baffle ring pulling rubber stopper and slot
The spring A of cooperation, the pedestal are additionally provided with the end cap for covering on pull rod and the peripheries spring A.
Further, the relief valve includes valve body, and body cavity has reciprocating rubber piston, valve body one end
The pressure release entrance communicated with body cavity is offered, valve body-side has the pressure relief vent communicated with body cavity, the pressure release
It is connected inside entrance transtracheal and compressor housings, pressure relief vent transtracheal is connected with stomata, and the body cavity has
Push rubber piston towards one end motion of pressure release entrance to block the spring B of pressure release entrance.
Another technical solution provided by the invention is：A kind of under-voltage protection of turbocharger and the work of high pressure drainage device
Make method, includes under-voltage protection and the high pressure drainage device of the turbocharger；
（1）When engine is in long-time idling operation, the formation pressure close to compressor impeller end and lubricating oil oil pocket
Force difference forms pressure difference and acts on pressure-failure protector, pressure-failure protector is made to open air-breathing, make close to compressor impeller end 26 with
Outside air is connected to, and eliminates pressure difference；
（2）It is negative pressure now close to compressor impeller end when high engine speeds running on the lower load, and oil pump flow pressure
Directly proportional with engine speed, the increase of rotating speed necessarily causes lubricating oil oil pressure to increase so that oil pocket and with close to calming the anger
Machine impeller end formed bigger pressure difference, be formed by pressure difference and act on pressure-failure protector, make close to compressor impeller end with
Outside air is connected to, and eliminates negative pressure；
（3）It to shift gears or emergency brake when driving, closed throttle, turbo blade, compressor impeller are in effect of inertia
Under still persistently rotate, at this time because air throttle block with turbo blade continue supercharging cause the air pressure of air inlet pipeline fast
Speed improves, and when air pressure is more than certain threshold value in compressor casing body, relief valve is opened, and excessive gas is led to from compressor housings
Turbine end is discharged into ambient atmosphere, realizes the function of decompression protection.
Compared with prior art, the invention has the advantages that：The present invention can be eliminated in different operating mode lower oil cavities
Pressure difference with being formed between compressor impeller end, prevents the leakage of machine oil, protects booster；When compressor pressure mistake
When big, pressure release can be played the role of, reduce venting duration, improve efficiency, realize the function of decompression protection.
To make the objectives, technical solutions, and advantages of the present invention more comprehensible, specific embodiment and phase will be passed through below
Attached drawing is closed, invention is further described in detail.
Description of the drawings
Fig. 1 is organigram of the embodiment of the present invention；
Fig. 2 is intermediate organigram in the embodiment of the present invention；
Fig. 3 is pressure-failure protector schematic diagram of closed state in the embodiment of the present invention；
Fig. 4 is pressure-failure protector suction condition schematic diagram in the embodiment of the present invention；
Fig. 5 is relief valve organigram in the embodiment of the present invention；
Figure label explanation：1- is close to turbine end, 2- oil pockets, the first gas circuits of 3-, 4- stomatas, 5- compressor housings, 6- gas
Pipe, 7- relief valves, 8- pressure-failure protectors, the second gas circuits of 9-, 10- intermediates, 11- oil circuits, 12- are close to compressor impeller end, 13-
Rubber stopper, 14- air admission holes, 15- pedestals, 16- baffle rings, 17- end caps, 18- spring A, 19- pull rod, 20- airstrainers, 21- slots
Hole, 22- valve bodies, 23- rubber pistons, 24- pressure releases entrance, 25- pressure relief vents, 26- spring Bs.
Specific implementation mode
As shown in Fig. 1 ~ 5, a kind of under-voltage protection of turbocharger and high pressure drainage device, including both ends are separately connected whirlpool
The intermediate 10 with compressor is taken turns, the first gas circuit 3 of perforation intermediate both ends of the surface, intermediate side are offered on the intermediate 10
Portion offers the second gas circuit 9 communicated with the first gas circuit 3, is further opened with stomata 4 positioned at 9 side of the second gas circuit, the second gas circuit 9 enters
It is provided with pressure-failure protector 8 at mouthful, is connected inside the stomata transtracheal 6 and compressor housings 5, is arranged on the tracheae 6
There is relief valve 7.
In the present embodiment, the pressure-failure protector 8 includes the pedestal 15 that inner cavity is communicated with the second gas circuit 9, the pedestal
It is connected by screw and is installed on intermediate, 15 inner cavity of the pedestal offers a slot 21, and 15 side of the pedestal offers
The air admission hole 14 being connected with slot 21,15 inner cavity of pedestal are additionally provided with reciprocating rubber stopper 13, and rubber stopper 13 passes through
It moves back and forth and the cooperation of slot 21 or detaches to realize air admission hole 14 and the disconnection of the second gas circuit 9 or be connected to；When close to compressor
When negative pressure occurs in impeller end 12, it can overcome the spring A of pressure-failure protector device that rubber stopper 13 is made to be moved to the left, to empty with the external world
Gas phase is logical, prevents to form pressure difference close to compressor impeller end and lubricating oil oil pocket 2, prevents oil leak.
In the present embodiment, it is provided with airstrainer 20 in the air admission hole 14, to prevent impurity from entering system, prevented
The impeller of supercharger air compressor damages, and ensures booster reliability of operation；It is also associated with across slot on the rubber stopper 13
And outwardly extending pull rod 19,19 outer end of pull rod are provided with baffle ring 16, are arranged on the pull rod 19 and head on the pulling of baffle ring 16
The spring A18 of rubber stopper and slot cooperation, the pedestal 15 are additionally provided with the end cap 17 for covering on pull rod 19 and the peripheries spring A18.
In the present embodiment, the relief valve includes valve body 22, and 22 inner cavity of valve body has reciprocating rubber piston
23,22 one end of valve body offers the pressure release entrance 24 communicated with 22 inner cavity of valve body, and 22 side of valve body has and 22 inner cavity phase of valve body
Logical pressure relief vent 25 is connected inside the pressure release entrance transtracheal and compressor housings, pressure relief vent transtracheal and stomata
It is connected, 22 inner cavity of the valve body, which has, pushes rubber piston towards one end motion of pressure release entrance to block the spring of pressure release entrance 24
B26, when the certain threshold value of compressor housings air pressure inside superelevation, when overcoming the spring of relief valve, relief valve is opened, compressor high pressure
Air-flow has the function that protect supercharger systems, reduces venting duration, improve efficiency to turbine end pressure release.
A kind of under-voltage protection of turbocharger and the working method of high pressure drainage device, including the turbocharger
Under-voltage protection and high pressure drainage device；
（1）When engine is in long-time idling operation, since engine at this time is in natural aspiration state, in cylinder
It when piston is moved from top dead centre toward lower dead center, is equivalent to and is outwardly evacuated, go out to be formed close to compressor impeller end 12 certain true
Reciprocal of duty cycle（Air pressure is less than an atmospheric pressure, but air pressure is more than 0 Pa）, this operating mode long-play, 2 lubricating oil oil pressure of oil pocket is just
Pressure（Usually 2 ~ 5 atmospheric pressure）, this just forms pressure difference, and it will cause oil leakages；Close to compressor impeller end 12 with
The pressure difference of the formation pressure difference of lubricating oil oil pocket 2, formation is acted on by the first gas circuit and the second gas circuit on pressure-failure protector,
So that pressure-failure protector is opened air-breathing, makes to be connected to outside air close to compressor impeller end 12, eliminate pressure difference.
（2）When high engine speeds running on the lower load, such as descending, on gear, release throttle, engine towing astern, this
When close to compressor impeller end 12 be negative pressure（Air pressure is less than 0Pa）, and oil pump flow pressure be it is directly proportional with engine speed,
The increase of rotating speed necessarily causes lubricating oil oil pressure to increase, and with close to the formation of compressor impeller end 12 bigger pressure difference, it is formed
Pressure difference acted on pressure-failure protector by the first gas circuit and the second gas circuit, make empty with the external world close to compressor impeller end 12
Gas is connected to, and eliminates negative pressure.
（3）It to shift gears or emergency brake when driving, closed throttle, turbo blade, compressor impeller are in effect of inertia
Under still persistently rotate, at this time because air throttle block with blade continue supercharging lead to air inlet pipeline（In air throttle and turbine
Between）Air pressure improve rapidly, when in compressor casing body air pressure be more than certain threshold value when, overcome the spring B in relief valve
Elastic force, pressure release entrance is connected to pressure relief vent, and excessive gas is led to turbine end 1 from compressor housings is discharged into ambient atmosphere
In（Pressure-failure protector 8 is in closed state at this time）, realize the function of decompression protection, this controls turbine with by air inlet by-passing valve
The aperture of air inlet, which carrys out pressure release, phase same-action, to reduce venting duration, improves efficiency, realizes the function of decompression protection.
Above-listed preferred embodiment, has been further described the object, technical solutions and advantages of the present invention, is answered
Understand, the foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention god.
Claims (4)
1. under-voltage protection and the high pressure drainage device of a kind of turbocharger, including both ends are separately connected in turbine and compressor
Mesosome, it is characterised in that：The first gas circuit of perforation intermediate both ends of the surface is offered on the intermediate, intermediate side offers
The second gas circuit communicated with the first gas circuit is further opened with stomata positioned at the second gas circuit side, and the second gas circuit inlet is provided with deficient
Protector is pressed, is connected inside the stomata transtracheal and compressor housings, relief valve is provided on the tracheae；It is described under-voltage
Protector includes the pedestal that inner cavity is communicated with the second gas circuit, and the pedestal inner cavity offers a slot, and the pedestal side opens up
There are the air admission hole being connected with slot, pedestal inner cavity to be additionally provided with reciprocating rubber stopper, rubber stopper passes through reciprocating motion
Coordinate with slot or detaches to realize air admission hole and the disconnection of the second gas circuit or be connected to.
2. under-voltage protection and the high pressure drainage device of turbocharger according to claim 1, it is characterised in that：It is described into
Airstrainer is provided in stomata；It is also associated on the rubber stopper across slot and outwardly extending pull rod, pull rod outer end
Portion is provided with baffle ring, is arranged on the pull rod and heads on the spring A that baffle ring pulls rubber stopper and slot cooperation, and the pedestal is also set
There is the end cap for covering on pull rod and the peripheries spring A.
3. under-voltage protection and the high pressure drainage device of turbocharger according to claim 1, it is characterised in that：It is described to let out
Pressure valve includes valve body, body cavity has a reciprocating rubber piston, and valve body one end is offered to be communicated with body cavity
Pressure release entrance, valve body-side have the pressure relief vent communicated with body cavity, the pressure release entrance transtracheal and compressor housings
Inside is connected, and pressure relief vent transtracheal is connected with stomata, and the body cavity, which has, pushes rubber piston towards pressure release entrance
One end motion is to block the spring B of pressure release entrance.
4. a kind of under-voltage protection of turbocharger and the working method of high pressure drainage device, including it is any as right wants 1 ~ 3
The under-voltage protection of the turbocharger and high pressure drainage device, it is characterised in that：
（1）When engine is in long-time idling operation, the formation pressure difference close to compressor impeller end and lubricating oil oil pocket,
It forms pressure difference to act on pressure-failure protector, pressure-failure protector is made to open air-breathing, make empty with the external world close to compressor impeller end
Gas is connected to, and eliminates pressure difference；
（2）Negative pressure now close to compressor impeller end when high engine speeds running on the lower load, and oil pump flow pressure be with
Engine speed is directly proportional, and the increase of rotating speed necessarily causes lubricating oil oil pressure to increase so that oil pocket and with close to gas compressor blade
It takes turns end and forms bigger pressure difference, be formed by pressure difference and act on pressure-failure protector, make close to compressor impeller end and the external world
Air communication eliminates negative pressure；
（3）To shift gears or emergency brake when driving, closed throttle, turbo blade, compressor impeller under effect of inertia still
Old lasting rotation, at this time because the supercharging that continues of air throttle blocked with turbo blade causes the air pressure of air inlet pipeline to carry rapidly
Height, when air pressure is more than certain threshold value in compressor casing body, relief valve is opened, and excessive gas is led to turbine from compressor housings
End is discharged into ambient atmosphere, realizes the function of decompression protection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610823465.6A CN106224085B (en) | 2016-09-14 | 2016-09-14 | A kind of under-voltage protection of turbocharger and high pressure drainage device and its working method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610823465.6A CN106224085B (en) | 2016-09-14 | 2016-09-14 | A kind of under-voltage protection of turbocharger and high pressure drainage device and its working method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106224085A CN106224085A (en) | 2016-12-14 |
| CN106224085B true CN106224085B (en) | 2018-08-17 |
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ID=58074168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610823465.6A Expired - Fee Related CN106224085B (en) | 2016-09-14 | 2016-09-14 | A kind of under-voltage protection of turbocharger and high pressure drainage device and its working method |
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| Country | Link |
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| CN (1) | CN106224085B (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4495120B2 (en) * | 2006-08-10 | 2010-06-30 | 三菱重工業株式会社 | Multistage turbocharged turbocharger |
| CN105569824B (en) * | 2015-12-28 | 2018-06-19 | 浙江吉利汽车研究院有限公司 | The air intake structure of turbocharger in a kind of automobile |
| CN206092166U (en) * | 2016-09-14 | 2017-04-12 | 福州大学 | Turbo charger's undervoltage protection and high -pressure drainage device |
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2016
- 2016-09-14 CN CN201610823465.6A patent/CN106224085B/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN106224085A (en) | 2016-12-14 |
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Granted publication date: 20180817 Termination date: 20210914 |