CN109372628A - Electric supercharging diesel engine system for realizing Miller cycle - Google Patents
Electric supercharging diesel engine system for realizing Miller cycle Download PDFInfo
- Publication number
- CN109372628A CN109372628A CN201811280287.2A CN201811280287A CN109372628A CN 109372628 A CN109372628 A CN 109372628A CN 201811280287 A CN201811280287 A CN 201811280287A CN 109372628 A CN109372628 A CN 109372628A
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- CN
- China
- Prior art keywords
- compressor
- cylinder
- turbocharger
- miller cycle
- diesel engine
- 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.)
- Pending
Links
- 239000000446 fuel Substances 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000002283 diesel fuel Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
Classifications
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- 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
- 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
-
- 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
- F02B39/08—Non-mechanical drives, e.g. fluid drives having variable gear ratio
- F02B39/10—Non-mechanical drives, e.g. fluid drives having variable gear ratio electric
-
- 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)
- Supercharger (AREA)
Abstract
A diesel engine system for realizing Miller cycle by electric supercharging comprises a turbocharger (1), a throttle valve (6) and a cylinder (7), wherein an air inlet pipe of the cylinder (7) is connected with a compressor of the turbocharger (1), an intercooler (5) is arranged on the air inlet pipe of the cylinder (7), an electric supercharger is arranged on the air inlet pipe of the cylinder (7) between the intercooler (5) and the compressor of the turbocharger (1), and a bypass valve (4) is connected in parallel with the electric supercharger; the electric supercharger comprises a gas compressor (2) and a motor (3), the gas compressor (2) is respectively connected with an intercooler (5) and a compressor of the turbocharger (1), and the motor (3) is connected with the gas compressor (2). The requirement of a large-load working condition on air intake charge is met, and the torque of low rotating speed is improved; the electric supercharger is flexible to control and quick in response, and the power performance of the Miller cycle diesel engine is effectively improved while the fuel economy is improved.
Description
Technical field
The present invention relates to a kind of diesel engine system, Miller cycle bavin is realized in more specifically to a kind of electronic pressurization
Oil turbine system, belongs to technical field of internal combustion engines.
Background technique
Currently, promoting diesel engine that must further promote cycle efficieny with diesel engine energy consumption and emission regulation plus tight.
Existing Miller cycle diesel engine is closed by inlet valve morning pass/evening, and diesel engine expansion ratio is made to be greater than compression ratio, realizes that the thermal efficiency mentions
It rises, mainly includes following two technical solution:
First, high pressure-charging+miller cycle engine, referring to fig. 4, using high supercharging pressure level turbocharger 1, when improving big load
Power output, air inlet use slow enclosed Miller cycle, postpone inlet valve by VVT system and close, reduce indoor reality of burning
Border compression ratio.But the technical solution influences original machine dynamic property in Part load deficiency of air.
Second, double pressurization+miller cycle engines, referring to Fig. 5, the rudimentary turbocharger of the small inertia of the first order is mentioned
High low speed torque output, solves the problems, such as that 7 low speed power of engine is insufficient；The second level uses general advanced turbocharger,
This cooperation the higher boost pressure of output, raising 7 efficiency of engine can be realized fast in entire 7 range of speeds of engine
Speed response.But the technical solution flexibility is insufficient.
Summary of the invention
It is an object of the invention to realize existing for thermal efficiency lift technique scheme for existing Miller cycle diesel engine
The problems such as Part load deficiency of air or insufficient flexibility, provides a kind of electronic pressurization realization Miller cycle diesel engine
Machine system.
To achieve the above object, the technical solution of the invention is as follows: a kind of electronic pressurization realization Miller cycle diesel oil hair
Motivation system, including turbocharger, air throttle, cylinder, the air throttle is mounted on the inlet manifold front end of cylinder, described
The compressor of the air inlet pipe of cylinder and turbocharger connects, and is provided with intercooler on cylinder intake pipe, the exhaust pipe of cylinder with
The turbine of turbocharger connects, and is connected with exhaust gas by-pass valve between the turbine inlet and outlet of turbocharger, described
Electric booster is provided on cylinder intake pipe between intercooler and the compressor of turbocharger, and simultaneously with electric booster
It is associated with by-passing valve.
The electric booster includes compressor and motor, the compressor respectively with intercooler and turbocharger
Compressor connection, the motor connects with compressor.
Compared with prior art, the beneficial effects of the present invention are:
1, the present invention uses electronic pressurization+Miller cycle, increases air inflow.
2, low engine speed dynamic property is improved by electric booster.
3, the thermal efficiency and fuel economy are promoted by Miller cycle.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention.
Fig. 2 is that inlet valve of the present invention early closes Miller cycle indicator card.
Fig. 3 is to close Miller cycle indicator card in inlet valve evening of the present invention.
Fig. 4 is existing high pressure-charging+miller cycle engine structural schematic diagram.
Fig. 5 is existing double pressurizations+miller cycle engine structural schematic diagram.
In figure: turbocharger 1, compressor 2, motor 3, by-passing valve 4, intercooler 5, air throttle 6, cylinder 7, exhaust gas valve 8,
Engine 9, low-pressure stage compressor 10, lower pressure stage turbine 11, hiigh pressure stage compressor 12, hiigh pressure stage turbine 13, vent valve 14.
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 electronic pressurization realization Miller cycle diesel engine system, including turbocharger 1, air throttle
6, cylinder 7.The air throttle 6 is mounted on the inlet manifold front end of cylinder 7, the air inlet pipe and turbocharger 1 of the cylinder 7
Compressor connection, be provided with intercooler 5 in 7 air inlet pipe of cylinder；The exhaust pipe of cylinder 7 and the turbine of turbocharger 1 connect
It connects, is connected with exhaust gas by-pass valve 8 between the turbine inlet and outlet of turbocharger 1.The intercooler 5 and turbocharger
Be provided with electric booster in 7 air inlet pipe of cylinder between 1 compressor, and intercooler 5 and the compressor of turbocharger 1 it
Between 7 air inlet pipe of cylinder on electric booster be parallel with by-passing valve 4.
Referring to Fig. 1, specifically, the electric booster includes compressor 2 and motor 3, the compressor 2 respectively with
Intercooler 5 is connected with the compressor of turbocharger 1, and the motor 3 and compressor 2 connect.
Referring to Fig. 1 to Fig. 3, this system compresses air inlet using electric booster, and compensation is because of inlet valve lift and opens
The loss of inlet flow caused by the reduction of angle is opened, meets requirement of the high load working condition to charge, promotes the torsion of the slow-speed of revolution
Square；And electric booster control is flexible, response is rapid, while promoting fuel economy, effectively improves Miller cycle diesel oil
The dynamic property of machine.This system specific work process is as follows: when electric booster works, by-passing valve 4 is closed, electric booster and whirlpool
It takes turns booster 1 and forms tandem working system, diesel engine intake process is pressurized, increase air inflow；High temperature and pressure air inlet warp
It crosses intercooler 5 to be cooled down, subsequently enters air throttle 6 and generate throttling refrigeration effect, subsequently enter cylinder 7, inlet valve morning pass/evening
It closes, realizes that stroke expansion ratio is greater than the effect of compression ratio, realize Miller cycle.
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. Miller cycle diesel engine system, including turbocharger (1), air throttle (6), cylinder are realized in a kind of electronic pressurization
(7), the air throttle (6) is mounted on the inlet manifold front end of cylinder (7), the air inlet pipe and turbocharging of the cylinder (7)
The compressor of device (1) connects, and is provided with intercooler (5) in cylinder (7) air inlet pipe, the exhaust pipe and turbocharger of cylinder (7)
(1) turbine connection, is connected with exhaust gas by-pass valve (8), feature between the turbine inlet and outlet of turbocharger (1)
It is: is provided with electronic pressurization in cylinder (7) air inlet pipe between the intercooler (5) and the compressor of turbocharger (1)
Device, and by-passing valve (4) are parallel with electric booster.
2. Miller cycle diesel engine system is realized in a kind of electronic pressurization according to claim 1, it is characterised in that: institute
The electric booster stated includes compressor (2) and motor (3), the compressor (2) respectively with intercooler (5) and turbocharging
The compressor of device (1) connects, the motor (3) and compressor (2) connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811280287.2A CN109372628A (en) | 2018-10-30 | 2018-10-30 | Electric supercharging diesel engine system for realizing Miller cycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811280287.2A CN109372628A (en) | 2018-10-30 | 2018-10-30 | Electric supercharging diesel engine system for realizing Miller cycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109372628A true CN109372628A (en) | 2019-02-22 |
Family
ID=65390875
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811280287.2A Pending CN109372628A (en) | 2018-10-30 | 2018-10-30 | Electric supercharging diesel engine system for realizing Miller cycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109372628A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102019205044A1 (en) * | 2019-04-09 | 2020-11-05 | Volkswagen Aktiengesellschaft | Method and devices for operating an internal combustion engine with a supercharging system |
| CN113202639A (en) * | 2021-05-19 | 2021-08-03 | 胡勤伟 | Power system of electric supercharging Miller cycle engine |
| CN118564335A (en) * | 2024-08-05 | 2024-08-30 | 宁波威孚天力增压技术股份有限公司 | Automobile engine structure with electric supercharger and turbocharger connected in parallel |
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| CN108625978A (en) * | 2017-03-24 | 2018-10-09 | 福特环球技术公司 | For use can electrically driven (operated) compressor engine start method and system |
| CN108691638A (en) * | 2017-03-30 | 2018-10-23 | 福特环球技术公司 | Method and system for engine system of boosting |
| CN108699949A (en) * | 2016-03-07 | 2018-10-23 | 三菱重工发动机和增压器株式会社 | Engine system, engine system control device, engine system control method and program |
| CN209293909U (en) * | 2018-10-30 | 2019-08-23 | 东风商用车有限公司 | Electric supercharging diesel engine system for realizing Miller cycle |
-
2018
- 2018-10-30 CN CN201811280287.2A patent/CN109372628A/en active Pending
Patent Citations (15)
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| CN101446228A (en) * | 2008-12-26 | 2009-06-03 | 泰豪科技股份有限公司 | Electric and turbo double-intake supercharging device for engine |
| DE102012009288A1 (en) * | 2011-05-19 | 2012-11-22 | Volkswagen Aktiengesellschaft | Internal combustion engine for passenger car, has electrically operated compressor and exhaust gas turbocharger which is provided with various shaped turbines |
| CN103511064A (en) * | 2012-06-15 | 2014-01-15 | 现代自动车株式会社 | Secondary air injection system |
| US20180180013A1 (en) * | 2013-10-31 | 2018-06-28 | Delphi Technologies Ip Limited | Cold start strategy and system for gasoline direct injection compression ignition engine |
| US20160348632A1 (en) * | 2013-12-19 | 2016-12-01 | Valeo Systemes De Controle Moteur | Assembly comprising a heat engine and an electrical compressor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113202639A (en) * | 2021-05-19 | 2021-08-03 | 胡勤伟 | Power system of electric supercharging Miller cycle engine |
| CN118564335A (en) * | 2024-08-05 | 2024-08-30 | 宁波威孚天力增压技术股份有限公司 | Automobile engine structure with electric supercharger and turbocharger connected in parallel |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190222 |