CN201513259U - Exhaust gas recirculation multi-loop device of series two-stage supercharged engine - Google Patents
Exhaust gas recirculation multi-loop device of series two-stage supercharged engine Download PDFInfo
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- CN201513259U CN201513259U CN200920312473XU CN200920312473U CN201513259U CN 201513259 U CN201513259 U CN 201513259U CN 200920312473X U CN200920312473X U CN 200920312473XU CN 200920312473 U CN200920312473 U CN 200920312473U CN 201513259 U CN201513259 U CN 201513259U
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- 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
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- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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Abstract
An exhaust gas recirculation multi-loop device of a series two-stage supercharged engine belongs to the technical field of internal-combustion engines, and comprises an engine, a high-pressure stage supercharger, a low-pressure stage supercharger, a high-pressure stage intake pipe, a high-pressure stage exhaust pipe, a hybrid EGR pipe, a middle-pressure stage intake pipe, a middle-pressure stage exhaust pipe, a middle-pressure stage EGR pipe, a low-pressure stage intake pipe, a low-pressure stage exhaust pipe and a low-pressure stage EGR pipe, wherein a control valve is respectively arranged on the three EGR pipelines. By selecting the separate or combined work of the EGR circuits, the engine can be ensured to obtain enough EGR flow under various working conditions, and by utilizing the higher-pressure stage EGR circuits as far as possible, the wasted work of the supercharger and the damage of the high temperature exhaust to the supercharger are reduced. The utility model has reasonable design and simple structure, and is applicable to the series two-stage supercharged engine with high requirements on EGR.
Description
Technical field
The utility model relates to a kind of exhaust gas recirculation (EGR) device of motor, and particularly a kind of tandem type two-stage supercharged engine exhaust gas recirculation multiloop device that is applicable to belongs to technical field of internal combustion engines.
Background technique
The EGR technology is a kind of method that effectively reduces internal-combustion engine NOx discharging.More and more strictness along with Abgasgesetz, requirement has more EGR flow to introduce inlet end from the exhaust end of internal-combustion engine, and the running operating point (for example, external characteristics and declared working condition) that does not in the past need to carry out EGR is in order to satisfy also needs introducing EGR of new Abgasgesetz.When being used with pressurization system, a kind of egr system is after waste gas is incorporated into gas compressor before the turbine, to form the high pressure stage loop.But because pressurization system runnability changes with engine operating condition point, pressure before the turbine can not always keep greater than the pressure behind the gas compressor, especially when engine operation in the big load stage of high rotating speed, because exhaust energy is higher, make pressure before pressure is greater than turbine behind the gas compressor, as do not take additional measures then exhaust can not flow into suction tude by the EGR pipe.The layout of another kind of EGR is that exhaust is incorporated into the import of gas compressor from the outlet of turbine, forms the low pressure stage loop.This cloth deposits and can realize that under the full operating mode of motor EGR flows needed pressure reduction, and gas compressor can be wasted the compression work of gas compressor and bring the risk of damaging gas compressor but high-temperature exhaust air is flowed through.
The model utility content
In order to overcome the deficiency of prior art, the utility model provides a kind of multiloop EGR device that improves two-step supercharging engine exhaust recyclability.According to the variation of engine operating condition, select suitable EGR loop works, the EGR flow that the realization system is required.Utilize higher EGR loop of arbitrarily downgrading as much as possible, the EGR loop of it being closed and adopt low one-level with valve in the time of can't realizing EGR stream in higher EGR loop of arbitrarily downgrading, make motor can both obtain required EGR flow under each operating mode and reduce the infringement of exhaust to gas compressor, this model utility can also realize simultaneously that the combination in EGR loop is to satisfy bigger EGR flow requirements.
The technological scheme that the utility model adopted is for achieving the above object: this device comprises the low pressure stage suction tude, the low pressure stage gas compressor, the medium pressure grade suction tude, the high pressure stage gas compressor, the high pressure stage suction tude, intercooler, the intake manifold, intake manifold, motor, gas exhaust manifold, the high pressure stage outlet pipe, the high pressure stage turbine, the medium pressure grade outlet pipe, the low pressure stage turbine, the low pressure stage outlet pipe, bypass tube, bypass valve, the high pressure stage coupling shaft, the low pressure stage coupling shaft, high pressure stage EGR pipe, medium pressure grade EGR pipe, low pressure stage EGR pipe, high pressure stage EGR control valve, medium pressure grade EGR control valve, low pressure stage EGR control valve, the high pressure stage cooler for recycled exhaust gas, medium pressure grade cooler for recycled exhaust gas and low pressure stage cooler for recycled exhaust gas, one end of low pressure stage suction tude is connected with the inlet of low pressure stage gas compressor, and the other end leads to atmosphere.The medium pressure grade suction tude is connected between the inlet of the outlet of low pressure stage gas compressor and high pressure stage gas compressor, the high pressure stage suction tude is connected between the inlet of the outlet of high pressure stage gas compressor and intercooler, the intake manifold is connected between the inlet of the outlet of intercooler and intake manifold, the outlet of intake manifold and the inlet of gas exhaust manifold all are connected on the motor, the high pressure stage outlet pipe is connected between the inlet of the outlet of gas exhaust manifold and high pressure stage turbine, the medium pressure grade outlet pipe is connected between the inlet of the outlet of high pressure stage turbine and low pressure stage turbine, one end of low pressure stage outlet pipe is connected with the outlet of low pressure stage turbine, and the other end leads to atmosphere.The high pressure stage gas compressor is connected with the high pressure stage turbine shaft by the high pressure stage coupling shaft, the low pressure stage gas compressor is connected with the low pressure stage turbine shaft by the low pressure stage coupling shaft, bypass tube is installed between high pressure stage outlet pipe and the medium pressure grade outlet pipe, bypass valve is installed in the bypass tube, high pressure stage EGR pipe is installed between high pressure stage outlet pipe and the high pressure stage suction tude, medium pressure grade EGR pipe is installed between medium pressure grade outlet pipe and the medium pressure grade suction tude, low pressure stage EGR pipe is installed between low pressure stage outlet pipe and the low pressure stage suction tude, high pressure stage EGR control valve, medium pressure grade EGR control valve, low pressure stage EGR control valve is installed on high pressure stage EGR pipe respectively, medium pressure grade EGR pipe, in the low pressure stage EGR pipe.The high pressure stage cooler for recycled exhaust gas is installed on the high pressure stage EGR pipe and places between high pressure stage EGR control valve and the high pressure stage outlet pipe, the medium pressure grade cooler for recycled exhaust gas is installed on the medium pressure grade EGR pipe and places between medium pressure grade EGR control valve and the medium pressure grade outlet pipe, and the low pressure stage cooler for recycled exhaust gas is installed on the low pressure stage EGR pipe and places between low pressure stage EGR control valve and the low pressure stage outlet pipe.
By controlling closing and opening of the high, medium and low EGR of arbitrarily downgrading control valve, this device has been realized the independent and work in combination pattern in the high, medium and low EGR of arbitrarily downgrading loop.
The beneficial effects of the utility model:
The utility model is reasonable in design, and is simple in structure, makes motor can both obtain required EGR flow under each operating mode and reduces the infringement of exhaust to gas compressor.
Description of drawings
Fig. 1 is the structural representation of the utility model exhaust gas recirculation multiloop device.
Embodiment
Below in conjunction with accompanying drawing, concrete enforcement of the present utility model is described further.
As shown in Figure 1, the utility model comprises low pressure stage suction tude 4, low pressure stage gas compressor 5, medium pressure grade suction tude 9, high pressure stage gas compressor 10, high pressure stage suction tude 14, intercooler 15, the intake manifold 16, intake manifold 17, motor 18, gas exhaust manifold 19, high pressure stage outlet pipe 20, high pressure stage turbine 21, medium pressure grade outlet pipe 24, low pressure stage turbine 25, low pressure stage outlet pipe 26, bypass tube 22, bypass valve 23, high pressure stage coupling shaft 27, low pressure stage coupling shaft 28, high pressure stage EGR pipe 12, medium pressure grade EGR pipe 7, low pressure stage EGR pipe 2, high pressure stage EGR control valve 13, medium pressure grade EGR control valve 8, low pressure stage EGR control valve 3, high pressure stage cooler for recycled exhaust gas 11, medium pressure grade cooler for recycled exhaust gas 6 and low pressure stage cooler for recycled exhaust gas 1.One end of low pressure stage suction tude 4 is connected with the inlet of low pressure stage gas compressor 5, the other end leads to atmosphere, medium pressure grade suction tude 9 is connected between the inlet of the outlet of low pressure stage gas compressor 5 and high pressure stage gas compressor 10, high pressure stage suction tude 14 is connected between the inlet of the outlet of high pressure stage gas compressor 10 and intercooler 14, intake manifold 16 is connected between the inlet of the outlet of intercooler 15 and intake manifold 17, the inlet of the outlet of intake manifold 17 and gas exhaust manifold 19 all is connected on the motor 18, high pressure stage outlet pipe 20 is connected between the inlet of the outlet of gas exhaust manifold 19 and high pressure stage turbine 21, medium pressure grade outlet pipe 24 is connected between the inlet of the outlet of high pressure stage turbine 21 and low pressure stage turbine 25, one end of low pressure stage outlet pipe 26 is connected with the outlet of low pressure stage turbine 25, the other end leads to atmosphere, high pressure stage gas compressor 10 is connected with 21 of high pressure stage turbines by high pressure stage coupling shaft 27, low pressure stage gas compressor 5 is connected with 25 of low pressure stage turbines by low pressure stage coupling shaft 28, bypass tube 22 is installed between high pressure stage outlet pipe 20 and the medium pressure grade outlet pipe 24, bypass valve 23 is installed in the bypass tube 22, high pressure stage EGR pipe 12 is installed between high pressure stage outlet pipe 20 and the high pressure stage suction tude 14, medium pressure grade EGR pipe 7 is installed between medium pressure grade outlet pipe 24 and the medium pressure grade suction tude 9, low pressure stage EGR pipe 2 is installed between low pressure stage outlet pipe 26 and the low pressure stage suction tude 4, high pressure stage EGR control valve 13, medium pressure grade EGR control valve 8, low pressure stage EGR control valve 3 is installed on high pressure stage EGR pipe 12 respectively, medium pressure grade EGR pipe 7, in the low pressure stage EGR pipe 2, high pressure stage cooler for recycled exhaust gas 11 is installed on the high pressure stage EGR pipe 12 and places between high pressure stage EGR control valve 13 and the high pressure stage outlet pipe 20, medium pressure grade cooler for recycled exhaust gas 6 is installed on the medium pressure grade EGR pipe 7 and places between medium pressure grade EGR control valve 8 and the medium pressure grade outlet pipe 24, and low pressure stage cooler for recycled exhaust gas 1 is installed on the low pressure stage EGR pipe 2 and places between low pressure stage EGR control valve 3 and the low pressure stage outlet pipe 26.High pressure stage EGR pipe 12, high pressure stage cooler for recycled exhaust gas 11 and high pressure stage EGR control valve 13 constitute high pressure stage EGR loop, medium pressure grade EGR pipe 7, medium pressure grade cooler for recycled exhaust gas 6 and medium pressure grade EGR control valve 8 constitute medium pressure grade EGR loop, and low pressure stage EGR pipe 2, low pressure stage cooler for recycled exhaust gas 1 and low pressure stage EGR control valve 3 constitute low pressure stage EGR loop.When motor is in the low operating mode of the slow-speed of revolution, high pressure stage outlet pipe 20 internal pressures are during greater than high pressure stage suction tude 14 internal pressures, open high pressure stage EGR control valve 13, close medium pressure grade EGR control valve 8 and low pressure stage EGR control valve 3, high pressure stage EGR loop works, air inlet mixes in high pressure stage suction tude 14 through intercooler 15 backs by intake manifold's 16 inflow engines 18 with a part of exhaust.Under other operating mode, to utilize higher EGR loop of arbitrarily downgrading as much as possible according to each two ends, EGR loop differential pressure conditions, in the time of can't realizing EGR stream in higher EGR loop of arbitrarily downgrading, the EGR loop of closing corresponding EGR control valve and adopting low one-level, if necessary can also the bigger EGR flow of the practical incompatible realization of EGR loop sets arbitrarily, make motor under each operating mode, can both obtain required EGR flow and reduce the infringement of exhaust gas compressor.
Claims (1)
1. tandem type two-stage supercharged engine exhaust gas recirculation multiloop device, comprise low pressure stage suction tude (4), low pressure stage gas compressor (5), medium pressure grade suction tude (9), high pressure stage gas compressor (10), high pressure stage suction tude (14), intercooler (15), intake manifold (16), intake manifold (17), motor (18), gas exhaust manifold (19), high pressure stage outlet pipe (20), high pressure stage turbine (21), medium pressure grade outlet pipe (24), low pressure stage turbine (25), low pressure stage outlet pipe (26), bypass tube (22), bypass valve (23), high pressure stage coupling shaft (27) and low pressure stage coupling shaft (28), it is characterized in that also comprising high pressure stage EGR pipe (12), medium pressure grade EGR manages (7), low pressure stage EGR manages (2), high pressure stage EGR control valve (13), medium pressure grade EGR control valve (8), low pressure stage EGR control valve (3), high pressure stage cooler for recycled exhaust gas (11), medium pressure grade cooler for recycled exhaust gas (6) and low pressure stage cooler for recycled exhaust gas (1), one end of low pressure stage suction tude (4) is connected with the inlet of low pressure stage gas compressor (5), the other end leads to atmosphere, medium pressure grade suction tude (9) is connected between the inlet of the outlet of low pressure stage gas compressor (5) and high pressure stage gas compressor (10), high pressure stage suction tude (14) is connected between the inlet of the outlet of high pressure stage gas compressor (10) and intercooler (14), intake manifold (16) is connected between the inlet of the outlet of intercooler (15) and intake manifold (17), the inlet of the outlet of intake manifold (17) and gas exhaust manifold (19) all is connected on the motor (18), high pressure stage outlet pipe (20) is connected between the inlet of the outlet of gas exhaust manifold (19) and high pressure stage turbine (21), medium pressure grade outlet pipe (24) is connected between the inlet of the outlet of high pressure stage turbine (21) and low pressure stage turbine (25), the outlet of low pressure stage outlet pipe (26) one ends and low pressure stage turbine (25) is connected, the other end leads to atmosphere, high pressure stage gas compressor (10) is connected with high pressure stage turbine (21) axle by high pressure stage coupling shaft (27), low pressure stage gas compressor (5) is connected with low pressure stage turbine (25) axle by low pressure stage coupling shaft (28), bypass tube (22) is installed between high pressure stage outlet pipe (20) and the medium pressure grade outlet pipe (24), bypass valve (23) is installed in the bypass tube (22), high pressure stage EGR pipe (12) is installed between high pressure stage outlet pipe (20) and the high pressure stage suction tude (14), medium pressure grade EGR pipe (7) is installed between medium pressure grade outlet pipe (24) and the medium pressure grade suction tude (9), low pressure stage EGR pipe (2) is installed between low pressure stage outlet pipe (26) and the low pressure stage suction tude (4), high pressure stage EGR control valve (13), medium pressure grade EGR control valve (8), low pressure stage EGR control valve (3) is installed on high pressure stage EGR pipe (12) respectively, medium pressure grade EGR manages (7), in the low pressure stage EGR pipe (2), high pressure stage cooler for recycled exhaust gas (11) is installed on high pressure stage EGR pipe (12) and goes up and place between high pressure stage EGR control valve (13) and the high pressure stage outlet pipe (20), medium pressure grade cooler for recycled exhaust gas (6) is installed on medium pressure grade EGR pipe (7) and goes up and place between medium pressure grade EGR control valve (8) and the medium pressure grade outlet pipe (24), and low pressure stage cooler for recycled exhaust gas (1) is installed on low pressure stage EGR pipe (2) and goes up and place between low pressure stage EGR control valve (3) and the low pressure stage outlet pipe (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920312473XU CN201513259U (en) | 2009-10-14 | 2009-10-14 | Exhaust gas recirculation multi-loop device of series two-stage supercharged engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920312473XU CN201513259U (en) | 2009-10-14 | 2009-10-14 | Exhaust gas recirculation multi-loop device of series two-stage supercharged engine |
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| Publication Number | Publication Date |
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| CN201513259U true CN201513259U (en) | 2010-06-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920312473XU Expired - Fee Related CN201513259U (en) | 2009-10-14 | 2009-10-14 | Exhaust gas recirculation multi-loop device of series two-stage supercharged engine |
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| CN (1) | CN201513259U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101956633A (en) * | 2010-10-27 | 2011-01-26 | 湖南大学 | Exhaust gas recirculation system for internal combustion engine |
| CN102889147A (en) * | 2012-09-26 | 2013-01-23 | 天津大学 | High-efficiency and low-emission novel composite thermodynamic cycle control method for engine |
| CN103061909A (en) * | 2013-01-07 | 2013-04-24 | 天津大学 | Method for improving low-temperature combustion soot emission and fuel economy of diesel engine |
| JP2016003614A (en) * | 2014-06-17 | 2016-01-12 | いすゞ自動車株式会社 | Engine exhaust gas recirculation method and engine exhaust gas recirculation device |
| CN105392974A (en) * | 2013-06-11 | 2016-03-09 | 洋马株式会社 | Engine |
| CN110145418A (en) * | 2019-05-05 | 2019-08-20 | 天津大学 | A kind of middle pressure gas recirculation system based on two-stage turbocharger |
-
2009
- 2009-10-14 CN CN200920312473XU patent/CN201513259U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101956633A (en) * | 2010-10-27 | 2011-01-26 | 湖南大学 | Exhaust gas recirculation system for internal combustion engine |
| CN102889147A (en) * | 2012-09-26 | 2013-01-23 | 天津大学 | High-efficiency and low-emission novel composite thermodynamic cycle control method for engine |
| CN102889147B (en) * | 2012-09-26 | 2015-01-21 | 天津大学 | High-efficiency and low-emission novel composite thermodynamic cycle control method for engine |
| CN103061909A (en) * | 2013-01-07 | 2013-04-24 | 天津大学 | Method for improving low-temperature combustion soot emission and fuel economy of diesel engine |
| CN105392974A (en) * | 2013-06-11 | 2016-03-09 | 洋马株式会社 | Engine |
| JP2016003614A (en) * | 2014-06-17 | 2016-01-12 | いすゞ自動車株式会社 | Engine exhaust gas recirculation method and engine exhaust gas recirculation device |
| CN110145418A (en) * | 2019-05-05 | 2019-08-20 | 天津大学 | A kind of middle pressure gas recirculation system based on two-stage turbocharger |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100623 Termination date: 20101014 |