CN104314649A - Exhaust gas bypass power turbine system - Google Patents
Exhaust gas bypass power turbine system Download PDFInfo
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- CN104314649A CN104314649A CN201410517279.0A CN201410517279A CN104314649A CN 104314649 A CN104314649 A CN 104314649A CN 201410517279 A CN201410517279 A CN 201410517279A CN 104314649 A CN104314649 A CN 104314649A
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- power turbine
- combustion engine
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- exhaust gas
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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
The invention discloses an exhaust gas bypass power turbine system, which comprises an internal combustion engine body (1), an intake manifold (11), an exhaust manifold (2), a turbocharger, a power turbine (8) and a mechanical transmission device (6), wherein the turbocharger comprises a charging turbine (7) and a gas compressor (9); a gas inlet of the charging turbine (7) is connected with the exhaust manifold (2); a gas inlet of the power turbine (8) is connected with the exhaust manifold (2) through a bypass pipeline (3); a gas outlet of the power turbine (8) is connected with a main exhaust pipe (14) after being connected in parallel with a gas outlet of the charging turbine (7) through a pipeline. The system is simple in structure, the exhaust gas energy recovery rate of an internal combustion engine is increased, and the output power of the internal combustion engine is effectively improved.
Description
Technical field
The present invention relates to a kind of power turbine, relate to a kind of exhaust gas bypass power turbine system in particular, belong to internal combustion engine waste gas energy recovery technology field.
Background technique
At present, in technical field of internal combustion engines, the energy for combustion engine powered output only accounts for 35% ~ 45% of oil inflame total amount of heat, and exhaust heat accounts for 30% ~ 40%; Therefore recovery internal combustion engine waste gas energy as much as possible, can increasing combustion engine output work, improve internal-combustion engine the thermal efficiency, improve oil consumption, energy-conserving and environment-protective.
Power turbine system is the important technology reclaiming internal combustion engine waste gas energy, improve the efficiency of internal combustion engine, realize combustion engine energy-saving reduction of discharging.In existing power turbine system, engine exhaust gas is discharged to power turbine through turbosupercharger, then power turbine work is driven, specifically see Fig. 1, comprise internal combustion engine main body 1, intake manifold 11, discharge manifold 2, turbosupercharger, power turbine 8 and mechanical transmission 6, turbosupercharger comprises charging turbine 7 and gas compressor 9; The suction port of charging turbine 7 is connected with discharge manifold 2, and the air outlet of charging turbine 7 is connected with the suction port of power turbine 8, and the air outlet of power turbine 8 is connected with exhaust manifold 14, and power turbine 8 is connected with mechanical transmission 6.During work, engine exhaust gas is discharged to the charging turbine 7 of turbosupercharger through discharge manifold 2, and charging turbine 7 drives gas compressor 9 to work, and improves power of IC engine density; Power turbine 8 is discharged to by the engine exhaust gas of charging turbine 7, drive power turbine 8 to work, be converted into mechanical energy by power turbine 8, then pass on I. C. engine crankshaft by mechanical transmission 6, thus improve output power of internal combustion engine, achieving waste heat of internal combustion engine can reclaim.But engine exhaust gas is after charging turbine 7 in this power turbine system, and engine exhaust gas pressure obviously reduces, therefore for driving the energy of power turbine 8 to greatly reduce, cause the internal combustion engine waste gas energy recovery rate low; Meanwhile, power turbine 8 can cause the exhaust back pressure of charging turbine 7 to raise, and causes pumping loss to increase, thus reduces the efficiency of internal combustion engine.
Summary of the invention
The object of the invention is to low for the existing power turbine system capacity recovery rate, easily cause the problems such as charging turbine exhaust back pressure rising, a kind of exhaust gas bypass power turbine system is provided.
For achieving the above object, technical solution of the present invention is: a kind of exhaust gas bypass power turbine system, comprise internal combustion engine main body, intake manifold, discharge manifold, turbosupercharger, power turbine and mechanical transmission, described turbosupercharger comprises charging turbine and gas compressor, the suction port of described charging turbine is connected with discharge manifold, the suction port of described power turbine is connected with discharge manifold by bypass line, the air outlet of power turbine and the air outlet of described charging turbine after pipeline is in parallel, then are connected with exhaust manifold.
Described bypass line is provided with bypass valve.
Described bypass valve is automatically controlled butterfly valve, and described intake manifold is provided with pressure transducer, and control end and the pressure transducer of described bypass valve are electrically connected with Engine ECU respectively.
Described pressure transducer is semiconductor piezo-resistive pressure sensor.
Described bypass valve is pneumatic diaphragm spring valve, and the control end of described pneumatic diaphragm spring valve drives pipeline to be connected with intake manifold by bypass valve.During work, pneumatic diaphragm spring valve is driven by inlet air pressure, when inlet air pressure reach internal-combustion engine pressure is set time, gas drives pipeline to control pneumatic diaphragm spring valve by bypass valve and opens, internal combustion engine high pressure waste gas is directly discharged to power turbine through bypass line and drives power turbine work, and be mechanical energy by power turbine by high pressure exhaust gas Conversion of Energy, achieving waste heat of internal combustion engine can reclaim; When inlet air pressure do not reach internal-combustion engine demand is set time, pneumatic diaphragm spring valve is in closed condition, and power turbine does not work, and engine exhaust gas is directly discharged after charging turbine, does not affect the efficiency of internal combustion engine.
compared with prior art, the invention has the beneficial effects as follows:
1, structure is simple, improves the internal combustion engine waste gas energy recovery rate, effectively improves output power of internal combustion engine.The suction port of medium power turbine of the present invention is connected with discharge manifold by bypass line, therefore by bypass line, internal combustion engine high pressure waste gas is directly discharged to power turbine, internal combustion engine high pressure exhaust energy Direct driver power turbine works, the internal combustion engine waste gas energy recovery rate is high, and output power of internal combustion engine is improved greatly.
2, the suction port of medium power turbine of the present invention is connected with discharge manifold by bypass line, therefore additionally can not increase the exhaust back pressure of charging turbine, can not increase pumping loss, thus can not reduce the efficiency of internal combustion engine.
Accompanying drawing explanation
Fig. 1 is existing power turbine system architecture schematic diagram.
Fig. 2 is that in the present invention, bypass valve is automatically controlled butterfly valve structure schematic diagram.
Fig. 3 is that in the present invention, bypass valve is pneumatic diaphragm spring valve structural representation.
In figure, internal combustion engine main body 1, gas exhaust manifold 2, bypass line 3, Engine ECU 4, bypass valve 5, mechanical transmission 6, charging turbine 7, power turbine 8, gas compressor 9, intercooler 10, intake manifold 11, pressure transducer 12, bypass valve drives pipeline 13, exhaust manifold 14.
Embodiment
Illustrate that the present invention is described in further detail with embodiment below in conjunction with accompanying drawing.
See Fig. 2-Fig. 3, a kind of exhaust gas bypass power turbine system, comprises internal combustion engine main body 1, intake manifold 11, discharge manifold 2, turbosupercharger, power turbine 8 and mechanical transmission 6, and described turbosupercharger comprises charging turbine 7 and gas compressor 9.The suction port of described charging turbine 7 is connected with discharge manifold 2, and the air outlet of charging turbine 7 is connected with exhaust manifold 14.During work, the engine exhaust gas that internal combustion engine main body 1 is discharged is discharged in charging turbine 7 through gas exhaust manifold 2, charging turbine 7 drives gas compressor 9 to work, gas compressor 9 inhale fresh air pressurized gas, thus improve power of IC engine density, air enters intake manifold 11 after intercooler 10 is lowered the temperature, then enters internal combustion engine main body 1 participation burning; Meanwhile, the engine exhaust gas of discharging through charging turbine 7 is directly discharged by exhaust manifold 14.Described power turbine 8 one end is turbine, and the other end is gear, is connected between turbine with gear by transmission shaft; The suction port of power turbine 8 is connected with discharge manifold 2 by bypass line 3, the air outlet of power turbine 8 is connected with exhaust manifold 14 after pipeline parallel connection, again with the air outlet of described charging turbine 7, namely makes bypass line 3 be arranged on turbosupercharger upstream; The gear of power turbine 8 is connected with mechanical transmission 6.Engine exhaust gas is directly discharged to the turbine of power turbine 8 by bypass line 3, and internal combustion engine high pressure exhaust energy is passed to the gear of power turbine 8 by the turbine of power turbine 8 by transmission shaft, thus drives power turbine 8 to work; Be mechanical energy by power turbine 8 by high pressure exhaust gas Conversion of Energy again, then pass on I. C. engine crankshaft by mechanical transmission 6, improve output power of internal combustion engine, achieving waste heat of internal combustion engine can reclaim.
See Fig. 2, described bypass line 3 is provided with bypass valve 5; Concrete, described bypass valve 5 is automatically controlled butterfly valve, and described intake manifold 11 is provided with pressure transducer 12, and control end and the pressure transducer 12 of described bypass valve 5 are electrically connected with Engine ECU 4 respectively.Described pressure transducer 12 is semiconductor piezo-resistive pressure sensor; Pressure transducer 12 goes out the change of suction pressure according to the size detection of internal-combustion engine rotational speed and load, then converts signal voltage to and delivers to ECU.During work, suction pressure is fed back to Engine ECU 4 by pressure transducer 12, when suction pressure reach internal-combustion engine demand is set time, the bypass valve 5 that Engine ECU 4 sends on electrical signal control bypass line 3 is opened, internal combustion engine high pressure waste gas is directly discharged to power turbine 8 through bypass line 3, power turbine 8 is driven to work, and be mechanical energy by power turbine 8 by high pressure exhaust gas Conversion of Energy, pass on I. C. engine crankshaft by mechanical transmission 6 again, thus improve output power of internal combustion engine, achieving waste heat of internal combustion engine can reclaim.When suction pressure do not reach internal-combustion engine demand is set time, the bypass valve 5 on bypass line 3 is in closed condition, and power turbine 8 does not work, engine exhaust gas directly after charging turbine 7 discharge, do not affect the efficiency of internal combustion engine.
See Fig. 3, described bypass line 3 is provided with bypass valve 5; Concrete, described bypass valve 5 is pneumatic diaphragm spring valve, and the control end of described pneumatic diaphragm spring valve drives pipeline 13 to be connected with intake manifold 11 by bypass valve, and described pneumatic diaphragm spring valve is driven by inlet air pressure.During work, when inlet air pressure reach internal-combustion engine pressure is set time, the pneumatic diaphragm spring valve that gas drives pipeline 13 to control on bypass line 3 by bypass valve is opened, internal combustion engine high pressure waste gas is directly discharged to power turbine 8 through bypass line 3, drive power turbine 8 to work, and be mechanical energy by power turbine 8 by high pressure exhaust gas Conversion of Energy, then pass on I. C. engine crankshaft by mechanical transmission 6, thus improve output power of internal combustion engine, achieving waste heat of internal combustion engine can reclaim.When inlet air pressure do not reach internal-combustion engine demand is set time, the pneumatic diaphragm spring valve on bypass line 3 is in closed condition, and power turbine 8 does not work, engine exhaust gas directly after charging turbine 7 discharge, do not affect the efficiency of internal combustion engine.
The present invention utilizes internal combustion engine high pressure waste gas Direct driver power turbine 8 by bypass line 3, effectively can promote power turbine 8 output work, improves the internal combustion engine waste gas energy recovery rate, realizes real efficiency utilization internal combustion engine high pressure exhaust energy.
Above content is in conjunction with concrete preferred implementation further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, said structure all should be considered as belonging to protection scope of the present invention.
Claims (5)
1. an exhaust gas bypass power turbine system, comprise internal combustion engine main body (1), intake manifold (11), discharge manifold (2), turbosupercharger, power turbine (8) and mechanical transmission (6), described turbosupercharger comprises charging turbine (7) and gas compressor (9), the suction port of described charging turbine (7) is connected with discharge manifold (2), it is characterized in that: the suction port of described power turbine (8) is connected with discharge manifold (2) by bypass line (3), the air outlet of power turbine (8) and the air outlet of described charging turbine (7) are after pipeline is in parallel, be connected with exhaust manifold (14) again.
2. a kind of exhaust gas bypass power turbine system according to claim 1, is characterized in that: described bypass line (3) is provided with bypass valve (5).
3. a kind of exhaust gas bypass power turbine system according to claim 2, it is characterized in that: described bypass valve (5) is automatically controlled butterfly valve, described intake manifold (11) is provided with pressure transducer (12), and control end and the pressure transducer (12) of described bypass valve (5) are electrically connected with Engine ECU (4) respectively.
4. a kind of exhaust gas bypass power turbine system according to claim 3, is characterized in that: described pressure transducer (12) is semiconductor piezo-resistive pressure sensor.
5. a kind of exhaust gas bypass power turbine system according to claim 2, it is characterized in that: described bypass valve (5) is pneumatic diaphragm spring valve, the control end of described pneumatic diaphragm spring valve drives pipeline (13) to be connected with intake manifold (11) by bypass valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410517279.0A CN104314649A (en) | 2014-09-30 | 2014-09-30 | Exhaust gas bypass power turbine system |
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| CN201410517279.0A CN104314649A (en) | 2014-09-30 | 2014-09-30 | Exhaust gas bypass power turbine system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107407193A (en) * | 2015-02-27 | 2017-11-28 | 大众汽车有限公司 | The method for the component of internal combustion engine and for running and for designing such component of exhaust gas pressure converter with multiple cylinders and exhaust-driven turbo-charger exhaust-gas turbo charger, with mixing tube and waste gate |
| CN108757163A (en) * | 2018-05-11 | 2018-11-06 | 华南理工大学 | A kind of turbine composite internal combustion engine residual heat using device and its control method |
| CN112727608A (en) * | 2021-01-05 | 2021-04-30 | 东风商用车有限公司 | Engine bypass air intake and exhaust braking system |
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| JPS63183225A (en) * | 1987-01-22 | 1988-07-28 | Ishikawajima Harima Heavy Ind Co Ltd | Method of operating diesel engine with power turbine |
| JPH07208187A (en) * | 1994-01-14 | 1995-08-08 | Hino Motors Ltd | Turbo-supercharged engine |
| EP1195502A1 (en) * | 2000-10-06 | 2002-04-10 | IVECO FIAT S.p.A. | Turbocompound internal combustion engine |
| CN101553648A (en) * | 2007-05-03 | 2009-10-07 | 曼狄赛尔公司，德国曼柴油机欧洲股份公司的联营公司 | Large supercharged diesel engine with scr reactor |
| US20110100339A1 (en) * | 2005-01-26 | 2011-05-05 | Klaus Weyer | Compound Turbocharger System Having a Connectable Compressor |
| CN102562273A (en) * | 2012-02-13 | 2012-07-11 | 清华大学 | Turbine composite device with variable geometry charging turbine and engine system thereof |
| CN102900484A (en) * | 2006-04-12 | 2013-01-30 | 曼柴油机和涡轮公司,德国曼柴油机和涡轮欧洲股份公司的联营公司 | Large-scale turbocharged diesel engine with energy recovery device |
| CN204163812U (en) * | 2014-09-30 | 2015-02-18 | 东风商用车有限公司 | A kind of exhaust gas bypass power turbine system |
-
2014
- 2014-09-30 CN CN201410517279.0A patent/CN104314649A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63183225A (en) * | 1987-01-22 | 1988-07-28 | Ishikawajima Harima Heavy Ind Co Ltd | Method of operating diesel engine with power turbine |
| JPH07208187A (en) * | 1994-01-14 | 1995-08-08 | Hino Motors Ltd | Turbo-supercharged engine |
| EP1195502A1 (en) * | 2000-10-06 | 2002-04-10 | IVECO FIAT S.p.A. | Turbocompound internal combustion engine |
| US20110100339A1 (en) * | 2005-01-26 | 2011-05-05 | Klaus Weyer | Compound Turbocharger System Having a Connectable Compressor |
| CN102900484A (en) * | 2006-04-12 | 2013-01-30 | 曼柴油机和涡轮公司,德国曼柴油机和涡轮欧洲股份公司的联营公司 | Large-scale turbocharged diesel engine with energy recovery device |
| CN101553648A (en) * | 2007-05-03 | 2009-10-07 | 曼狄赛尔公司，德国曼柴油机欧洲股份公司的联营公司 | Large supercharged diesel engine with scr reactor |
| CN102562273A (en) * | 2012-02-13 | 2012-07-11 | 清华大学 | Turbine composite device with variable geometry charging turbine and engine system thereof |
| CN204163812U (en) * | 2014-09-30 | 2015-02-18 | 东风商用车有限公司 | A kind of exhaust gas bypass power turbine system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107407193A (en) * | 2015-02-27 | 2017-11-28 | 大众汽车有限公司 | The method for the component of internal combustion engine and for running and for designing such component of exhaust gas pressure converter with multiple cylinders and exhaust-driven turbo-charger exhaust-gas turbo charger, with mixing tube and waste gate |
| CN108757163A (en) * | 2018-05-11 | 2018-11-06 | 华南理工大学 | A kind of turbine composite internal combustion engine residual heat using device and its control method |
| CN112727608A (en) * | 2021-01-05 | 2021-04-30 | 东风商用车有限公司 | Engine bypass air intake and exhaust braking system |
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Application publication date: 20150128 |