CN201513258U - Hybrid exhaust gas recirculation multi-loop device of series two-stage supercharged engine - Google Patents
Hybrid exhaust gas recirculation multi-loop device of series two-stage supercharged engine Download PDFInfo
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- CN201513258U CN201513258U CN2009203124513U CN200920312451U CN201513258U CN 201513258 U CN201513258 U CN 201513258U CN 2009203124513 U CN2009203124513 U CN 2009203124513U CN 200920312451 U CN200920312451 U CN 200920312451U CN 201513258 U CN201513258 U CN 201513258U
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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
- 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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Abstract
A hybrid 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, an EGR splitter, a high-pressure stage EGR branch pipe, a middle-pressure stage intake pip, a middle-pressure stage exhaust pipe, a middle-pressure stage EGR branch 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 high-pressure stage, the middle-pressure stage and the low-pressure stage EGR (branch) pipelines. By selecting or combinational use of all 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 hybrid exhaust gas recirculation multiloop device that is applicable to the tandem type two-stage supercharged engine belongs to technical field of internal combustion engines.
Background technique
The EGR technology is a kind of method of effective reduction 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 system 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 hybrid exhaust gas recirculation multiloop device that improves two-step supercharging engine exhaust recyclability.According to the variation of engine operating condition, select suitable EGR loop works to realize the required EGR flow of system.Utilize higher EGR loop of arbitrarily downgrading as much as possible, in the time of can't realizing EGR stream in higher EGR loop of arbitrarily downgrading, it is closed and adopts the EGR loop of low one-level with control valve, make motor under each operating mode, can both obtain required EGR flow and reduce the infringement of exhaust gas compressor, this model utility can also realize the combination in EGR loop simultaneously, 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, the hybrid EGR pipe, the EGR splitter, high pressure stage EGR arm, medium pressure grade EGR arm, low pressure stage EGR pipe, high pressure stage EGR control valve, medium pressure grade EGR control valve, low pressure stage EGR control valve, hybrid EGR cooler 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, 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, 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, the EGR splitter is a threeway, its three connection mouths are respectively by the hybrid EGR pipe, high pressure stage EGR arm, medium pressure grade EGR arm and high pressure stage outlet pipe, the high pressure stage suction tude, the medium pressure grade suction tude connects, 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 arm respectively, medium pressure grade EGR arm, in the low pressure stage EGR pipe.The hybrid EGR cooler is installed on the hybrid EGR 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 the high, medium and low EGR of arbitrarily downgrading control valve close and open control, native system has been realized the difference and the 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 also can reduce the infringement of exhaust to gas compressor.
Description of drawings
Fig. 1 is the structural representation of the hybrid exhaust gas recirculation multiloop of the utility model 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 8, high pressure stage gas compressor 9, high pressure stage suction tude 13, intercooler 14, the intake manifold 15, intake manifold 16, motor 17, gas exhaust manifold 18, high pressure stage outlet pipe 19, high pressure stage turbine 24, medium pressure grade outlet pipe 25, low pressure stage turbine 26, low pressure stage outlet pipe 27, bypass tube 22, bypass valve 23, high pressure stage coupling shaft 28, low pressure stage coupling shaft 29, hybrid EGR pipe 20, high pressure stage EGR arm 11, medium pressure grade EGR arm 6, low pressure stage EGR pipe 2, high pressure stage EGR control valve 12, medium pressure grade EGR control valve 7, low pressure stage EGR control valve 3, hybrid EGR cooler 21 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 8 is connected between the inlet of the outlet of low pressure stage gas compressor 5 and high pressure stage gas compressor 9, high pressure stage suction tude 13 is connected between the inlet of the outlet of high pressure stage gas compressor 9 and intercooler 14, intake manifold 15 is connected between the inlet of the outlet of intercooler 14 and intake manifold 16, the inlet of the outlet of intake manifold 16 and gas exhaust manifold 18 all is connected on the motor 17, high pressure stage outlet pipe 19 is connected between the inlet of the outlet of gas exhaust manifold 18 and high pressure stage turbine 24, medium pressure grade outlet pipe 25 is connected between the inlet of the outlet of high pressure stage turbine 24 and low pressure stage turbine 26, one end of low pressure stage outlet pipe 27 is connected with the outlet of low pressure stage turbine 26, the other end leads to atmosphere, high pressure stage gas compressor 9 is connected with 24 of high pressure stage turbines by high pressure stage coupling shaft 28, low pressure stage gas compressor 5 is connected with 26 of low pressure stage turbines by low pressure stage coupling shaft 29, bypass tube 22 is installed between high pressure stage outlet pipe 19 and the medium pressure grade outlet pipe 25, bypass valve 23 is installed in the bypass tube 22, EGR splitter 10 is threeways, its three connection mouths are respectively by hybrid EGR pipe 20, high pressure stage EGR arm 11, medium pressure grade EGR arm 6 and high pressure stage outlet pipe 19, high pressure stage suction tude 13, medium pressure grade suction tude 8 connects, low pressure stage EGR pipe 2 is installed between low pressure stage outlet pipe 27 and the low pressure stage suction tude 4 high pressure stage EGR control valve 12, medium pressure grade EGR control valve 7, low pressure stage EGR control valve 3 is installed on high pressure stage EGR arm 11 respectively, medium pressure grade EGR arm 6, in the low pressure stage EGR pipe 2.Hybrid EGR cooler 21 is installed on the hybrid EGR pipe 20, 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 27.Hybrid EGR pipe 20, hybrid EGR cooler 21, EGR splitter 10, high pressure stage EGR arm 11 and high pressure stage EGR control valve 12 constitute high pressure stage EGR loop, hybrid EGR pipe 20, hybrid EGR cooler 21, EGR splitter 10, medium pressure grade EGR arm 6 and medium pressure grade EGR control valve 7 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 operation of the slow-speed of revolution, high pressure stage outlet pipe 19 internal pressures are during greater than high pressure stage suction tude 13 internal pressures, open high pressure stage EGR control valve 12, close medium pressure grade EGR control valve 7 and low pressure stage EGR control valve 3, high pressure stage EGR loop works, air inlet mixes in high pressure stage suction tude 13 through intercooler 14 backs by intake manifold's 15 inflow engines 17 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, close the EGR loop that the control corresponding valve adopts low one-level in the time of can't realizing EGR stream in higher EGR loop of arbitrarily downgrading, or adopt the work in combination in EGR loop to realize bigger EGR flow, make motor under each operating mode, can both obtain required EGR flow and reduce the infringement of exhaust gas compressor.
Claims (1)
1. the hybrid exhaust gas recirculation multiloop device of a tandem type two-stage supercharged engine, comprise low pressure stage suction tude (4), low pressure stage gas compressor (5), medium pressure grade suction tude (8), high pressure stage gas compressor (9), high pressure stage suction tude (13), intercooler (14), intake manifold (15), intake manifold (16), motor (17), gas exhaust manifold (18), high pressure stage outlet pipe (19), high pressure stage turbine (24), medium pressure grade outlet pipe (25), low pressure stage turbine (26), low pressure stage outlet pipe (27), bypass tube (22), bypass valve (23), high pressure stage coupling shaft (28) and low pressure stage coupling shaft (29), it is characterized in that also comprising hybrid EGR pipe (20), EGR splitter (10), high pressure stage EGR arm (11), medium pressure grade EGR arm (6), low pressure stage EGR manages (2), high pressure stage EGR control valve (12), medium pressure grade EGR control valve (7), low pressure stage EGR control valve (3), hybrid EGR cooler (21) 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 (8) is connected between the inlet of the outlet of low pressure stage gas compressor (5) and high pressure stage gas compressor (9), high pressure stage suction tude (13) is connected between the inlet of the outlet of high pressure stage gas compressor (9) and intercooler (14), intake manifold (15) is connected between the inlet of the outlet of intercooler (14) and intake manifold (16), the inlet of the outlet of intake manifold (16) and gas exhaust manifold (18) all is connected on the motor (17), high pressure stage outlet pipe (19) is connected between the inlet of the outlet of gas exhaust manifold (18) and high pressure stage turbine (24), medium pressure grade outlet pipe (25) is connected between the inlet of the outlet of high pressure stage turbine (24) and low pressure stage turbine (26), one end of low pressure stage outlet pipe (27) is connected with the outlet of low pressure stage turbine (26), the other end leads to atmosphere, high pressure stage gas compressor (9) is connected with high pressure stage turbine (24) axle by high pressure stage coupling shaft (28), low pressure stage gas compressor (5) is connected with low pressure stage turbine (26) axle by low pressure stage coupling shaft (29), bypass tube (22) is installed between high pressure stage outlet pipe (19) and the medium pressure grade outlet pipe (25), bypass valve (23) is installed in the bypass tube (22), EGR splitter (10) is a threeway, its three connection mouths are respectively by hybrid EGR pipe (20), high pressure stage EGR arm (11), medium pressure grade EGR pipe (6) and high pressure stage outlet pipe (19), high pressure stage suction tude (13), medium pressure grade suction tude (8) connects, low pressure stage EGR pipe (2) is installed between low pressure stage outlet pipe (27) and the low pressure stage suction tude (4), high pressure stage EGR control valve (12), medium pressure grade EGR control valve (7), low pressure stage EGR control valve (3) is installed on high pressure stage EGR arm (11) respectively, medium pressure grade EGR arm (6), in the low pressure stage EGR arm (2), hybrid EGR cooler (21) is installed on the hybrid EGR pipe (20), 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 (27).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203124513U CN201513258U (en) | 2009-10-14 | 2009-10-14 | Hybrid exhaust gas recirculation multi-loop device of series two-stage supercharged engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203124513U CN201513258U (en) | 2009-10-14 | 2009-10-14 | Hybrid exhaust gas recirculation multi-loop device of series two-stage supercharged engine |
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| CN201513258U true CN201513258U (en) | 2010-06-23 |
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| CN2009203124513U Expired - Fee Related CN201513258U (en) | 2009-10-14 | 2009-10-14 | Hybrid exhaust gas recirculation multi-loop device of series two-stage supercharged engine |
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Cited By (14)
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| CN102400778A (en) * | 2011-11-03 | 2012-04-04 | 上海交通大学 | Series-parallel adjustable single-vortex double-pressure turbocharging system |
| CN102797572A (en) * | 2012-08-26 | 2012-11-28 | 吉林大学 | Diesel engine combustion control system and method under instantaneous working condition |
| CN103370511A (en) * | 2010-10-27 | 2013-10-23 | Mtu腓特烈港有限责任公司 | Internal combustion engine |
| CN104879199A (en) * | 2015-06-11 | 2015-09-02 | 上海工程技术大学 | Automatic control device for realizing multi-stage utilization of motor vehicle exhaust |
| CN105392974A (en) * | 2013-06-11 | 2016-03-09 | 洋马株式会社 | Engine |
| CN105545536A (en) * | 2016-02-05 | 2016-05-04 | 东风商用车有限公司 | EGR direct injection system of internal combustion engine |
| CN105545557A (en) * | 2016-02-05 | 2016-05-04 | 东风商用车有限公司 | Gas and EGR (exhaust gas recirculation) combined direct injection system |
| CN105545529A (en) * | 2016-02-05 | 2016-05-04 | 东风商用车有限公司 | Gas and EGR coupling direct injection system |
| CN105545530A (en) * | 2016-02-05 | 2016-05-04 | 东风商用车有限公司 | Gas and EGR mixed direct injection system |
| CN106121767A (en) * | 2016-07-27 | 2016-11-16 | 郑州职业技术学院 | Main oil gallery engine oil pressure self-reacting device |
| CN107905920A (en) * | 2017-09-30 | 2018-04-13 | 天津大学 | A kind of apparatus and method that supercharged diesel engine discharge is reduced based on air inlet Composition Control |
| CN110118142A (en) * | 2019-05-05 | 2019-08-13 | 天津大学 | A kind of high pressure exhaust gas medium voltage side introducing system based on two-stage turbocharger |
| WO2020133162A1 (en) * | 2018-12-28 | 2020-07-02 | 潍柴动力股份有限公司 | Exhaust gas recirculation system and engine |
| CN113006982A (en) * | 2021-04-15 | 2021-06-22 | 一汽解放汽车有限公司 | Engine EGR mixing device and engine |
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2009
- 2009-10-14 CN CN2009203124513U patent/CN201513258U/en not_active Expired - Fee Related
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103370511A (en) * | 2010-10-27 | 2013-10-23 | Mtu腓特烈港有限责任公司 | Internal combustion engine |
| CN103370511B (en) * | 2010-10-27 | 2015-11-25 | Mtu腓特烈港有限责任公司 | Internal-combustion engine |
| DE102010043027B4 (en) * | 2010-10-27 | 2019-08-14 | Mtu Friedrichshafen Gmbh | Internal combustion engine |
| CN102400778A (en) * | 2011-11-03 | 2012-04-04 | 上海交通大学 | Series-parallel adjustable single-vortex double-pressure turbocharging system |
| CN102797572A (en) * | 2012-08-26 | 2012-11-28 | 吉林大学 | Diesel engine combustion control system and method under instantaneous working condition |
| CN105392974A (en) * | 2013-06-11 | 2016-03-09 | 洋马株式会社 | Engine |
| CN104879199A (en) * | 2015-06-11 | 2015-09-02 | 上海工程技术大学 | Automatic control device for realizing multi-stage utilization of motor vehicle exhaust |
| CN105545536A (en) * | 2016-02-05 | 2016-05-04 | 东风商用车有限公司 | EGR direct injection system of internal combustion engine |
| CN105545529A (en) * | 2016-02-05 | 2016-05-04 | 东风商用车有限公司 | Gas and EGR coupling direct injection system |
| CN105545530A (en) * | 2016-02-05 | 2016-05-04 | 东风商用车有限公司 | Gas and EGR mixed direct injection system |
| CN105545557A (en) * | 2016-02-05 | 2016-05-04 | 东风商用车有限公司 | Gas and EGR (exhaust gas recirculation) combined direct injection system |
| CN105545530B (en) * | 2016-02-05 | 2018-09-25 | 东风商用车有限公司 | Gas and EGR mixed direct injection system |
| CN105545529B (en) * | 2016-02-05 | 2018-08-07 | 东风商用车有限公司 | Gas and EGR coupling direct injection system |
| CN105545557B (en) * | 2016-02-05 | 2018-08-07 | 东风商用车有限公司 | Gas and EGR (exhaust gas recirculation) combined direct injection system |
| CN106121767A (en) * | 2016-07-27 | 2016-11-16 | 郑州职业技术学院 | Main oil gallery engine oil pressure self-reacting device |
| CN107905920A (en) * | 2017-09-30 | 2018-04-13 | 天津大学 | A kind of apparatus and method that supercharged diesel engine discharge is reduced based on air inlet Composition Control |
| WO2020133162A1 (en) * | 2018-12-28 | 2020-07-02 | 潍柴动力股份有限公司 | Exhaust gas recirculation system and engine |
| US11448168B2 (en) | 2018-12-28 | 2022-09-20 | Weichai Power Co., Ltd. | Exhaust gas recirculation system and engine |
| CN110118142A (en) * | 2019-05-05 | 2019-08-13 | 天津大学 | A kind of high pressure exhaust gas medium voltage side introducing system based on two-stage turbocharger |
| CN113006982A (en) * | 2021-04-15 | 2021-06-22 | 一汽解放汽车有限公司 | Engine EGR mixing device and engine |
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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 |