CN109268129A - Engine compound turbine system with coupled power turbine and two-stage supercharging - Google Patents
Engine compound turbine system with coupled power turbine and two-stage supercharging Download PDFInfo
- Publication number
- CN109268129A CN109268129A CN201811278479.XA CN201811278479A CN109268129A CN 109268129 A CN109268129 A CN 109268129A CN 201811278479 A CN201811278479 A CN 201811278479A CN 109268129 A CN109268129 A CN 109268129A
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- air inlet
- engine
- gear
- gears
- power turbine
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- 150000001875 compounds Chemical class 0.000 title abstract description 3
- 230000005540 biological transmission Effects 0.000 claims abstract description 23
- 230000008878 coupling Effects 0.000 claims description 8
- 238000010168 coupling process Methods 0.000 claims description 8
- 238000005859 coupling reaction Methods 0.000 claims description 8
- 239000002131 composite material Substances 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 abstract 2
- 239000002912 waste gas Substances 0.000 abstract 1
- 230000008450 motivation Effects 0.000 description 3
- 230000001143 conditioned effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
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
- F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
- F02B37/04—Engines with exhaust drive and other drive of pumps, e.g. with exhaust-driven pump and mechanically-driven second pump
-
- 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
- F02B39/02—Drives of pumps; Varying pump drive gear ratio
- F02B39/04—Mechanical drives; Variable-gear-ratio drives
-
- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Supercharger (AREA)
Abstract
A power turbine and two-stage supercharging coupled engine compound turbine system is characterized in that a first gear (15) is fixed on a transmission input shaft of a flexible transmission (5), a third gear (17) is connected with a gear of a second-stage compressor (4), a second gear (16) and a fourth gear (18) are coaxially arranged on an output shaft of a power turbine (3), a joint sleeve (19) is arranged between the second gear (16) and the fourth gear (18), external teeth of the joint sleeve (19) are matched with internal teeth of the second gear (16) and internal teeth of the fourth gear (18), the joint sleeve (19) is connected with a controller (7) through a joint sleeve shifting fork mechanism (20), an air inlet regulating valve (10) is arranged on an air inlet pipeline of an engine, and the controller (7) is connected with the air inlet regulating valve (10). Fully gives consideration to the full working condition characteristics of the engine, improves the economy at low speed, and fully recovers the waste gas energy by utilizing the power turbine (3) at high speed.
Description
Technical field
The present invention relates to a kind of turbine system, more specifically to a kind of coupling power turbine and two-step supercharging start
Machine composite turbine system belongs to engine and related system technical field.
Background technique
Currently, engine turbine system mainly includes following two technical solution:
First, the power turbine system hybrid engine of exhaust gas turbocharge and power turbine Cascade System, referring to Fig. 3, mainly
The concatenated exhaust dynamics turbine 3 of pressurized turbo machine 8, transmission mechanism 12 and hair including turbocharger 2 and turbocharger 2
1 fluid coupling 32 of motivation, exhaust enter exhaust dynamics turbine 3 after turbocharger 2.The technical solution is lacked there are following
Point: 1, exhaust dynamics turbine 3 causes 8 back pressure of pressurized turbo machine of turbocharger 2 to increase, and acting is reduced, 1 air inflow of engine
It reduces, the burning of engine 14 deteriorates, and IMEP is reduced.2,1 speed operation capacity of engine is small, and exhaust gas cannot drive charging turbine
Machine 8 reaches efficacious workaround, and 2 efficiency of turbocharger is relatively low, will lead to the deterioration of 1 economy of engine；Therefore, the power turbine
System engine is in low speed, running on the lower load low efficiency.
Second, the two-step supercharging engine of mechanical supercharger and exhaust-driven turbo-charger exhaust-gas turbo charger parallel connection, mainly includes engine driven supercharging
Device and the concatenated second level turbocharger of mechanical supercharger, throttle valve, exhaust gas throttle valve and engine, air inlet increase through machinery
After the pressurization of the depressor first order, two-stage supercharging is carried out into second level turbocharger；Whether throttle valve control air inlet flows through machinery
Booster, exhaust gas throttle valve small range adjust the exhaust gas flow for entering second level turbocharger.There are following for the technical solution
Disadvantage: can only improve low speed effect, and engine driven supercharging is to no effect when high speed, in some instances it may even be possible to become load, influence economy；High speed
Shi Wufa recycles exhaust energy.
Summary of the invention
It is an object of the invention to it is small for low engine speed operating condition capacity existing for existing engine turbine system,
Or the problems such as exhaust energy can not be recycled when high speed, provide it is a kind of coupling power turbine and two-step supercharging engine it is compound
Turbine system.
To achieve the above object, the technical solution of the invention is as follows: a kind of hair coupling power turbine and two-step supercharging
Motivation composite turbine system, including engine, turbocharger, power turbine, the turbocharger include coaxially connected
Pressurized turbo machine and first order compressor, the first order compressor gas outlet is connect with motor intake manifold, described
Engine exhaust exhaust manifold connect with pressurized turbo machine air inlet, the pressurized turbo machine gas outlet and power turbine into
Port connection further includes having second level compressor, flexible drive mechanism, transmission switching mechanism, controller and air inlet adjustment valve, institute
The flexible drive mechanism stated is connect with engine crankshaft, and the transmission switching mechanism includes large speed ratio gear group and small speed ratio tooth
Wheel group, the large speed ratio gear group include intermeshing No.1 gear and No. two gears, the small speed ratio gear group packet
Intermeshing No. three gears and No. four gears are included, the No.1 gear is fixed on the transmission input shaft of Flexible Transmission, institute
No. three gears stated are connect with the gear of second level compressor, and No. two gears and No. four gears are co-axially located at power whirlpool
It can dally on the output shaft of wheel and relative to output shaft, being provided between No. two gears and No. four gears can be along the defeated of power turbine
The clutch collar of shaft axial movement, the external tooth of the clutch collar is matched with the internal tooth of No. two gears, No. four gears, and clutch collar
It is connect by clutch collar shifting fork mechanism with controller, the second level compressor gas outlet and first order compressor air inlet machine mouth connect
It connects, the air inlet adjustment valve is triple valve, and air inlet adjustment valve is arranged on engine air inlet tube road, and air inlet adjustment valve one goes out
Mouth is connect with first order compressor air inlet machine mouth, another outlet of air inlet adjustment valve is connect with second level compressor air inlet machine mouth, described
Controller connect with air inlet adjustment valve.
The flexible drive mechanism includes driving gear set, and the transmission output shaft of flexible drive mechanism passes through transmission gear
Group is connect with crankshaft.
Compared with prior art, the beneficial effects of the present invention are:
1, the present invention in engine in speed operation, whole system constitute two-step supercharging system, improve low speed air-suction state and
Economy avoids the power turbine system hybrid engine technology of existing exhaust gas turbocharge and power turbine Cascade System
In scheme power turbine in low speed due to recover energy it is insufficient, do the problems such as negative work；Motivation is in high speed operating condition in the present invention
When, whole system constitutes power turbine system, improves high speed economy, with existing mechanical supercharger and exhaust-driven turbo-charger exhaust-gas turbo charger
Two-step supercharging engine technology scheme in parallel is compared, and is sufficiently recycled energy in high speed exhaust gas, is improved engine thermal efficiency.
Therefore, the present invention can sufficiently take into account engine whole working condition property, and low speed promotes air inlet pressure ratio using two-step supercharging, improve warp
Ji property sufficiently recycles exhaust energy using power turbine at a high speed.
2, engine thermal efficiency is high, and economy dynamic property is more excellent compared with existing engine turbine system.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention.
Fig. 2 is inventive engine conditioned area figure.
Fig. 3 is the power turbine system structure diagram of existing exhaust gas turbocharge and power turbine Cascade System.
In figure: engine 1, turbocharger 2, power turbine 3, second level compressor 4, flexible drive mechanism 5, transmission is cut
It changes planes structure 6, controller 7, pressurized turbo machine 8, first order compressor 9, air inlet adjustment valve 10, engine crankshaft 11, transmission mechanism
12, large speed ratio gear group 13, small speed ratio gear group 14, No.1 gear 15, No. two gears 16, No. three gears 17, No. four gears 18,
Clutch collar 19, clutch collar shifting fork mechanism 20, driving gear set 21.
Specific embodiment
Below in conjunction with Detailed description of the invention and specific embodiment, the present invention is described in further detail.
Referring to Fig. 1, a kind of engine composite turbine system coupling power turbine and two-step supercharging, including engine 1, whirlpool
Take turns booster 2, power turbine 3, second level compressor 4, flexible drive mechanism 5, transmission switching mechanism 6, controller 7 and air inlet tune
Valve 10 is saved, the turbocharger 2 includes coaxially connected pressurized turbo machine 8 and first order compressor 9.
Referring to Fig. 1,1 discharge manifold of engine is connect with 8 air inlet of pressurized turbo machine, the pressurized turbo machine
8 gas outlets are connect with 3 air inlet of power turbine, and 9 gas outlet of first order compressor is connect with 1 inlet manifold of engine.
Referring to Fig. 1, the transmission switching mechanism 6 includes large speed ratio gear group 13 and small speed ratio gear group 14, described
Large speed ratio gear group 13 includes intermeshing No.1 gear 15 and No. two gears 16, and the small speed ratio gear group 14 includes phase
No. three gears 17 and No. four gears 18 mutually engaged.The No.1 gear 15 is fixed on the transmission input shaft of Flexible Transmission 5,
No. three gears 17 are connect with the gear of second level compressor 4.No. two gears 16 and No. four gears 18 are coaxially set
It sets on the output shaft of power turbine 3 and can dally relative to output shaft；It is provided between No. two gears 16 and No. four gears 18
The clutch collar 19 that can be moved axially along the output shaft of power turbine 3,16, No. four teeth of the external tooth of the clutch collar 19 and No. two gears
The internal tooth of wheel 18 matches, and clutch collar 19 is connect by clutch collar shifting fork mechanism 20 with controller 7.
Referring to Fig. 1, the Flexible Transmission 5 is connect with engine crankshaft 11,4 gas outlet of second level compressor with
The connection of 9 air inlet of first order compressor.The air inlet adjustment valve 10 be triple valve, air inlet adjustment valve 10 setting engine into
On air pipe, 10 one outlet of air inlet adjustment valve is connect with 9 air inlet of first order compressor, another outlet of air inlet adjustment valve 10
It is connect with 4 air inlet of second level compressor.The controller 7 is connect with air inlet adjustment valve 10, by controller 7 according to engine
1 operating condition, control transmission switching mechanism 6 and air inlet adjustment valve 10 press power turbine 3 and the second level by being driven switching mechanism 6
Mechanism of qi 4 connects or connect engine crankshaft 11 with power turbine 3 by being driven switching mechanism 6.
Referring to Fig. 1, specifically, the flexible drive mechanism 5 includes driving gear set 21, the biography of flexible drive mechanism 5
Dynamic output shaft is connect by driving gear set 1 with crankshaft 11.
Referring to Fig. 1 to Fig. 2, the conditioned area of engine 1 can be divided into two parts by the present invention, specific as shown in Figure 2: area
Domain I is speed operation, and region II is high speed operating condition.
Referring to Fig. 1 to Fig. 2, for engine 1 in speed operation, the work of engine 1 is in I region, by being driven switching mechanism 6
It connect power turbine 3 with second level compressor 4；Controller 7 controls clutch collar shifting fork mechanism 20 and pushes 19 edge of clutch collar at this time
The output shaft axial movement of power turbine 3 makes the interior indented joint of clutch collar 19 and No. four gears 18, subsequent No. four gears 18 by its
Power successively passes to second level compressor 4 by clutch collar 10.Air inlet adjustment valve 10 is adjusted to second level compressor 4 simultaneously,
Whole system constitutes two-step supercharging system, improves low speed air-suction state and economy；This kind of situation is improved by two-step supercharging
Air inflow improves 1 low pressure economy of engine, while avoiding power turbine 3 in low speed due to the deficiency that recovers energy, and does
Negative work.
Referring to Fig. 1 to Fig. 2, for engine 1 in high speed operating condition, the work of engine 1 is in II region, by being driven switching machine
Structure 6 connect engine crankshaft 11 with power turbine 3；Controller 7 controls clutch collar shifting fork mechanism 20 and pushes clutch collar 19 at this time
Make the interior indented joint of clutch collar 19 and No. two gears 16 along the output shaft axial movement of power turbine 3, subsequent No. two gears 16 will
Its power is successively passed in flexible transmission system 5 by clutch collar 10.Air inlet adjustment valve 10 is adjusted to first order compressor 9 simultaneously
Place, whole system constitute power turbine system, improve high speed economy；This kind of situation makes in high-speed working condition, exhaust energy compared with
Height still has a large amount of energy not to be recovered after pressurized turbo machine 8, therefore energy sufficiently in recycling high speed exhaust gas, mentions
High 1 thermal efficiency of engine.
The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be said that
Specific implementation of the invention is only limited to these instructions.For those of ordinary skill in the art to which the present invention belongs, exist
Under the premise of not departing from present inventive concept, a number of simple deductions or replacements can also be made, and above structure all shall be regarded as belonging to
Protection scope of the present invention.
Claims (2)
1. a kind of engine composite turbine system for coupling power turbine and two-step supercharging, including engine (1), turbocharger
(2), power turbine (3), the turbocharger (2) include coaxially connected pressurized turbo machine (8) and first order compressor
(9), first order compressor (9) gas outlet is connect with engine (1) inlet manifold, the engine (1) exhaust row
Gas manifold is connect with pressurized turbo machine (8) air inlet, the pressurized turbo machine (8) gas outlet and power turbine (3) air inlet
Connection, it is characterised in that: further include having second level compressor (4), flexible drive mechanism (5), transmission switching mechanism (6), control
Device (7) and air inlet adjustment valve (10), the flexible drive mechanism (5) are connect with engine crankshaft (11), and the transmission is cut
Structure (6) of changing planes includes large speed ratio gear group (13) and small speed ratio gear group (14), and the large speed ratio gear group (13) includes phase
The No.1 gear (15) mutually engaged and No. two gears (16), the small speed ratio gear group (14) include intermeshing No. three teeth
(17) and No. four gears (18) are taken turns, the No.1 gear (15) is fixed on the transmission input shaft of Flexible Transmission (5), described
No. three gears (17) connect with the gear of second level compressor (4), and No. two gears (16) and No. four gears (18) are coaxial
Be arranged on the output shaft of power turbine (3) and can dally relative to output shaft, No. two gears (16) and No. four gears (18) it
Between be provided with can along the output shaft of power turbine (3) move axially clutch collar (19), the external tooth and two of the clutch collar (19)
Number gear (16), No. four gears (18) internal tooth match, and clutch collar (19) passes through clutch collar shifting fork mechanism (20) and control
Device (7) connection, second level compressor (4) gas outlet are connect with first order compressor (9) air inlet, the air inlet tune
Saving valve (10) is triple valve, and air inlet adjustment valve (10) is arranged on engine air inlet tube road, air inlet adjustment valve (10) one outlet
It is connect with first order compressor (9) air inlet, another outlet of air inlet adjustment valve (10) connects with second level compressor (4) air inlet
It connects, the controller (7) is connect with air inlet adjustment valve (10).
2. a kind of engine composite turbine system for coupling power turbine and two-step supercharging according to claim 1, special
Sign is: the flexible drive mechanism (5) includes driving gear set (21), and the transmission output shaft of flexible drive mechanism (5) is logical
Driving gear set (1) is crossed to connect with crankshaft (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811278479.XA CN109268129A (en) | 2018-10-30 | 2018-10-30 | Engine compound turbine system with coupled power turbine and two-stage supercharging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811278479.XA CN109268129A (en) | 2018-10-30 | 2018-10-30 | Engine compound turbine system with coupled power turbine and two-stage supercharging |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109268129A true CN109268129A (en) | 2019-01-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811278479.XA Pending CN109268129A (en) | 2018-10-30 | 2018-10-30 | Engine compound turbine system with coupled power turbine and two-stage supercharging |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110425035A (en) * | 2019-07-19 | 2019-11-08 | 东风商用车有限公司 | A kind of power turbine mechanism can be used for brake power generating |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2042705A1 (en) * | 2007-09-28 | 2009-04-01 | Iveco Motorenforschung AG | Supercharged turbocompound engine |
| CN104314695A (en) * | 2014-09-30 | 2015-01-28 | 东风商用车有限公司 | Variable-speed-ratio compound turbine system and application method thereof |
| CN207420711U (en) * | 2017-11-03 | 2018-05-29 | 中国第一汽车股份有限公司 | The energy-recuperation system of asymmetric double runner turbocharged engine |
| CN209398496U (en) * | 2018-10-30 | 2019-09-17 | 东风商用车有限公司 | Engine compound turbine system with coupled power turbine and two-stage supercharging |
-
2018
- 2018-10-30 CN CN201811278479.XA patent/CN109268129A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2042705A1 (en) * | 2007-09-28 | 2009-04-01 | Iveco Motorenforschung AG | Supercharged turbocompound engine |
| CN104314695A (en) * | 2014-09-30 | 2015-01-28 | 东风商用车有限公司 | Variable-speed-ratio compound turbine system and application method thereof |
| CN207420711U (en) * | 2017-11-03 | 2018-05-29 | 中国第一汽车股份有限公司 | The energy-recuperation system of asymmetric double runner turbocharged engine |
| CN209398496U (en) * | 2018-10-30 | 2019-09-17 | 东风商用车有限公司 | Engine compound turbine system with coupled power turbine and two-stage supercharging |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110425035A (en) * | 2019-07-19 | 2019-11-08 | 东风商用车有限公司 | A kind of power turbine mechanism can be used for brake power generating |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190125 |
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| RJ01 | Rejection of invention patent application after publication |