CN107401442B - Engine waste gas power generation system - Google Patents
Engine waste gas power generation system Download PDFInfo
- Publication number
- CN107401442B CN107401442B CN201710561347.7A CN201710561347A CN107401442B CN 107401442 B CN107401442 B CN 107401442B CN 201710561347 A CN201710561347 A CN 201710561347A CN 107401442 B CN107401442 B CN 107401442B
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- Prior art keywords
- steam
- engine
- controller
- generation system
- generator
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- 238000010248 power generation Methods 0.000 title claims abstract description 26
- 239000002912 waste gas Substances 0.000 title claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 56
- 239000007789 gas Substances 0.000 claims abstract description 13
- 238000002347 injection Methods 0.000 claims abstract description 11
- 239000007924 injection Substances 0.000 claims abstract description 11
- 239000007788 liquid Substances 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000000446 fuel Substances 0.000 description 4
- 230000000087 stabilizing effect Effects 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000010795 Steam Flooding Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N5/00—Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy
- F01N5/02—Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy the devices using heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K23/00—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids
- F01K23/02—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled
- F01K23/06—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle
- F01K23/10—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle with exhaust fluid of one cycle heating the fluid in another cycle
-
- 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)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The invention discloses an engine waste gas power generation system, which belongs to the technical field of engine manufacturing, is arranged at an exhaust pipe of an engine and comprises a controller, a steam generator, a steam engine, a three-phase generator, a charger, a battery pack and an electrical appliance, wherein the steam generator comprises a water injection pump, a steam pressure sensor and a steam temperature sensor, the steam pressure sensor and the steam temperature sensor are both connected with the controller, the steam generator and the steam engine are communicated through an electromagnetic one-way valve, the steam engine and the three-phase generator are connected through an electromagnetic clutch, the three-phase generator is connected with the charger through a wire, the charger supplies power to the battery pack through a wire, and the battery pack supplies power to the electrical appliance. The invention can fully recycle the heat energy contained in the engine exhaust gas, and convert the heat energy into mechanical energy and electric energy for utilization, thereby effectively improving the efficiency of the engine and simultaneously reducing the loss of the output power of the engine.
Description
Technical Field
The invention relates to the technical field of engine manufacturing, in particular to an engine waste gas power generation system.
Background
The fuel acting part of the traditional gasoline engine only accounts for about 30% of total combustion energy generally, namely the thermal efficiency of the gasoline engine is about 30%; the thermal efficiency of the diesel engine is slightly high, about 40%. In addition, around 35% of the energy is carried away by the engine cooling system, and the remaining approximately 35% of the energy is carried away by the engine exhaust. If this energy can be recovered, it would be possible to increase the efficiency of the engine, reduce the fuel consumption of the engine and reduce the emission of greenhouse gases. The recovery of energy carried away by engine cooling systems and exhaust systems has attracted considerable attention.
Of the energy taken away by the engine cooling system and the energy taken away by the engine exhaust, the energy in the engine exhaust can be more fully utilized. The method converts heat energy and kinetic energy in the exhaust gas of the engine into mechanical energy and finally into electric energy, and is an important way for fully and efficiently utilizing the energy of the exhaust gas of the engine. Generally, the energy recovered by the engine exhaust turbine can meet the energy requirement of an automobile power system, and a generator and a driving system thereof in the engine can be further eliminated, so that the efficiency of the engine is further improved. The engine waste gas energy recovery system in the prior art is too complex in structure and cannot be really used for engineering application, or is too simple in structure, only suitable for a specific system, not worthy of popularization, and low in energy recovery efficiency.
Disclosure of Invention
The technical problem to be solved by the invention is to provide an engine waste gas power generation system, which drives steam to enter a steam engine through high-energy engine waste gas under the control of a controller and sensors such as pressure and temperature, so that the high-energy steam is converted into mechanical energy, the mechanical energy is further converted into electric energy for use, the energy loss of fuel is reduced, and the output efficiency of the engine is improved.
In order to solve the technical problems, the invention adopts the following technical scheme:
the invention discloses an engine waste gas power generation system which is arranged at an exhaust pipe of an engine and comprises a controller, a steam generator, a steam engine, a three-phase generator, a charger, a battery pack and an electric appliance, wherein the steam generator comprises a water injection pump which is controlled by the controller and is used for providing water vapor, the steam generator also comprises a steam pressure sensor and a steam temperature sensor, the steam pressure sensor and the steam temperature sensor are both connected with the controller, the steam generator and the steam engine are communicated through an electromagnetic one-way valve controlled by the controller, the steam engine is connected with a rotating speed sensor, the rotating speed sensor is connected to the controller, the steam engine and the three-phase generator are connected through an electromagnetic clutch controlled by the controller, the three-phase generator is connected with the charger through a lead, the charger supplies power to the battery pack through a lead, the battery pack supplies power to an electric appliance through a lead; the power generation system further comprises a steam condenser and a water storage tank, the steam engine is communicated with the steam condenser through a steam pipeline, the steam condenser is communicated with the water storage tank through an electromagnetic water suction pump, a liquid level sensor connected to a controller is further arranged in the water storage tank, a water return pipeline communicated with the steam generator is further arranged in the water storage tank, and the tail end of the water return pipeline is provided with the water injection pump; the steam generator comprises a closed cavity covered outside an exhaust manifold of the engine and a steam storage tank communicated with the closed cavity through an electromagnetic one-way valve, a jet orifice of the water jet pump is arranged beside the exhaust manifold in the closed cavity, and the steam storage tank is communicated with the steam engine through the electromagnetic one-way valve; and the tail end of the exhaust manifold is also provided with a thermomotor which is connected with a third electromagnetic clutch through a transmission shaft and is connected with and drives the three-phase generator through the third electromagnetic clutch.
Further, the steam condenser also comprises a pressure stabilizing safety electromagnetic valve controlled by the controller and a condenser pressure sensor connected to the controller.
Furthermore, a voltage-stabilizing safety electromagnetic valve in the power generation system is communicated with the outside, and other devices are all of a closed structure.
As a preferred mode for implementing the present invention, the electrical appliance is a vehicle-mounted electrical appliance.
As a preferable mode for implementing the present invention, the electric appliance is a vehicle driving motor.
The invention has the beneficial effects that: based on the principle that a steam engine drives a high-power generator, the high-energy waste gas substitutes steam into the steam engine, so that the high-energy steam is converted into mechanical energy and further converted into electric energy through a three-phase generator, and the high-energy waste gas contains about 35% of the total energy of fuel, so that the three-phase generator can generate enough electric energy, a low-power generator on the engine can be cancelled, the output power of the engine is not consumed, and the efficiency of the engine can be further improved; meanwhile, because the power of the three-phase generator is enough, devices which consume the energy of the engine, such as an air conditioner, an engine circulating water pump and the like on the engine in the prior art, can be moved to a position mounting point and are not arranged on the engine, and are driven by a steam engine or the three-phase generator through a thermal expansion clutch or an electromagnetic clutch, so that the output power of the engine is not consumed, and the efficiency of the engine is further improved.
Drawings
FIG. 1 is a schematic diagram of an engine exhaust power generation system according to the present invention;
FIG. 2 is a flow chart of the operation of an engine exhaust power generation system according to the present invention;
FIG. 3 is a schematic side view of a steam generator in the engine exhaust power generation system according to the present invention;
FIG. 4 is a front view of the enclosed chamber of the steam generator of FIG. 3;
1-steam generator, 2-electromagnetic one-way valve, 3-steam engine, 4-steam condenser, 5-electromagnetic water suction pump, 6-water storage tank, 7-water injection pump, 8-electromagnetic clutch, 9-three-phase generator, 10-charger, 11-battery pack, 12-electrical appliance, 13-vehicle driving motor, 14-steam temperature sensor, 15-steam pressure sensor, 16-rotating speed sensor, 17-condenser pressure sensor, 18-liquid level sensor, 19-hot expansion clutch, 20-engine circulating water pump, 21-air conditioner, 22-controller, 23-pressure stabilizing safety electromagnetic valve, 24-second electromagnetic clutch, 101-closed chamber, 102-exhaust manifold, 103-exhaust pipe, 104-steam storage tank, 105-hot air engine, 106-transmission shaft, 107-third electromagnetic clutch.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
1-4, the power generation system is arranged at an exhaust pipe 103 of an engine, the power generation system comprises a controller 22, a steam generator 1, a steam engine 3, a three-phase generator 9, a charger 10, a battery pack 11 and an electrical appliance 12, the steam generator 1 comprises a water injection pump 7 controlled by the controller 22 and used for providing water vapor, the steam generator 1 further comprises a steam pressure sensor 15 and a steam temperature sensor 14, both the steam pressure sensor 15 and the steam temperature sensor 14 are connected with the controller 22, the steam generator 1 and the steam engine 3 are conducted through an electromagnetic check valve 2 controlled by the controller 22, the steam engine 3 is connected with a rotating speed sensor 16, the rotating speed sensor 16 is connected with the controller 22, the steam engine 3 and the three-phase generator 9 are connected through an electromagnetic clutch 8 controlled by the controller 22, the three-phase generator 9 is connected with a charger 10 through a lead, the charger 10 supplies power to a battery pack 11 through the lead, and the battery pack 11 supplies power to an electric appliance through the lead.
In this example, the power generation system further includes a steam condenser 4 and a water storage tank 6, and the steam engine 3 is communicated with the steam condenser 4 through a steam pipeline, the steam condenser 4 is communicated with the water storage tank 6 through an electromagnetic water suction pump 5, a liquid level sensor 18 connected to a controller 22 is further arranged in the water storage tank 6, the water storage tank 6 is further provided with a water return pipeline communicated with the steam generator 1, and the tail end of the water return pipeline is provided with the water injection pump 7.
In this example, the steam condenser 4 further includes a pressure stabilizing safety solenoid valve 23 controlled by the controller 22 and a condenser pressure sensor 17 connected to the controller 22.
In this embodiment, the voltage-stabilizing safety solenoid valve 23 in the power generation system is communicated with the outside, and other devices are all of a closed structure.
In this example, the steam generator 1 includes a sealed chamber 101 covered outside the engine exhaust manifold 102 and a steam storage tank 104 in which the sealed chamber 101 is communicated through an electromagnetic check valve 2, and the injection port of the water injection pump 7 is disposed beside the exhaust manifold 102 in the sealed chamber 101, and the steam storage tank 104 is communicated with the steam engine 3 through the electromagnetic check valve 2.
In this example, the end of the exhaust manifold 102 is further provided with a heat engine 105, and the heat engine 105 is connected with a third electromagnetic clutch 107 through a transmission shaft 106, and is connected with and drives the three-phase generator 9 through the third electromagnetic clutch 107.
In this example, the electrical equipment includes an electrical equipment 12 mounted on a vehicle and a vehicle drive motor 13.
In this example, the air conditioner 21 and the engine circulating water pump 20 on the original engine are not mounted on the engine, the engine circulating water pump 20 is mounted on the steam engine 3 through the hot expansion clutch 19, and the air conditioner 21 is mounted on the steam engine 3 through the second electromagnetic clutch 24.
The working principle and the process of the engine exhaust gas power generation system in the example under various states are as follows:
state 1:
installing a high-pressure steam generator 1 shown in fig. 3 and 4 at an engine exhaust pipe 103, and generating high-pressure steam by using high-temperature exhaust gas discharged by an engine; after the steam temperature sensor 14 and the steam pressure sensor 15 generate signals and send the signals to the controller 22, the controller 22 sends a command, the electromagnetic one-way valve 2 is conducted, high-pressure steam is conveyed to the steam engine 3 through a connecting pipeline, the steam engine 3 starts to operate and outputs power, after the rotating speed sensor 16 generates signals and transmits the signals to the controller 22, the controller 22 sends a command to enable the electromagnetic clutch 8 between the steam engine 3 and the three-phase generator 9 to be connected, the power is conveyed to the three-phase generator 9, the generated power is conveyed to the charger 10 through a lead by the three-phase generator 9, the charger 10 charges the battery pack 11, the battery pack 11 conveys one path of the power to the vehicle-mounted electrical appliance 12, the other path of the power is conveyed to the vehicle driving motor 13, and the vehicle can start electric or hybrid driving;
state 2:
after the high-pressure steam drives the steam engine 3 to operate, the discharged steam is conveyed to the steam condenser 4 through a pipeline, the steam is converted into liquid water, after the liquid level sensor 18 generates a signal and transmits the signal to the controller 22, the controller 22 sends an instruction to enable the electromagnetic water suction pump 5 to work, the water is conveyed to the water storage tank 6, the cyclic utilization is realized, and the water replenishing period is shortened; the water storage tank 6 is communicated with the steam generator 1 through a water return pipeline, meanwhile, the controller 22 sends instructions at any time according to signals generated by the steam temperature sensor 14 and the steam pressure sensor 15, and the water injection pump 7 injects water in the water storage tank 6 into the steam generator 1 in a timed and quantitative mode to generate high-pressure steam so that the power generation system can continuously and circularly operate;
state 3:
after the high-temperature exhaust gas discharged by the engine passes through the high-pressure steam generator 1, the high-temperature exhaust gas with quite high temperature exists, so that according to the space limitation of a vehicle, a proper thermomotor 105 is installed at the tail end of the exhaust manifold 102, is connected with a third electromagnetic clutch 107 through a transmission shaft 106 and is connected with the steam engine 3 through the third electromagnetic clutch 107, and drives the three-phase generator 9 to operate together with the steam engine 3, so that the electric energy is supplemented for subsequent electric equipment or battery packs, and the heat energy of the engine exhaust gas can be more fully utilized.
And 4:
when the pressure value in the steam condenser 4 is higher than the set value, the controller 22 sends an instruction according to the pressure signal generated by the condenser pressure sensor 17, and the pressure-stabilizing safety electromagnetic valve 23 of the steam condenser is started to control the working pressure of the steam condenser 4 to be kept in a normal range;
and state 5:
except that the pressure stabilizing safety electromagnetic valve 23 of the whole steam system is communicated with the outside, other devices are totally closed, so that the steam pressure and the water loss are reduced;
and 6:
in the embodiment, the electric signal generated by the liquid level sensor 18 of the water storage tank 6 is communicated with the sound, light or voice prompter in the cab, so that a driver can be reminded of paying attention to prompt information at any time, and sufficient water can be supplemented to the water storage tank 6 in time.
Based on the engine exhaust gas power generation system, the generator on the engine can be eliminated, the three-phase generator 9 driven by the steam engine 3 can generate enough electric quantity, and the output power of the engine is not consumed; the original devices which consume the energy of the engine, such as the air conditioner 21 and the engine circulating water pump 20, are not arranged on the engine, and can be driven by the steam engine 3 or electricity through the hot expansion clutch 19 or the second electromagnetic clutch 24 without consuming the output power of the engine.
It should be understood by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be used as a limitation of the present invention, and that changes and modifications to the above embodiments are within the scope of the claims of the present invention as long as they are within the spirit and scope of the present invention.
Claims (5)
1. An engine waste gas power generation system is arranged at an exhaust pipe of an engine and is characterized in that the power generation system comprises a controller, a steam generator, a steam engine, a three-phase generator, a charger, a battery pack and an electric appliance, the steam generator comprises a water injection pump which is controlled by the controller and provides water vapor, the steam generator further comprises a steam pressure sensor and a steam temperature sensor, the steam pressure sensor and the steam temperature sensor are both connected with the controller, the steam generator and the steam engine are communicated through an electromagnetic one-way valve controlled by the controller, the steam engine is connected with a rotating speed sensor, the rotating speed sensor is connected to the controller, the steam engine and the three-phase generator are connected through an electromagnetic clutch controlled by the controller, the three-phase generator is connected with the charger through a lead, the charger supplies power to the battery pack through a wire, and the battery pack supplies power to an electric appliance through a wire;
the power generation system further comprises a steam condenser and a water storage tank, the steam engine is communicated with the steam condenser through a steam pipeline, the steam condenser is communicated with the water storage tank through an electromagnetic water suction pump, a liquid level sensor connected to a controller is further arranged in the water storage tank, a water return pipeline communicated with the steam generator is further arranged in the water storage tank, and the tail end of the water return pipeline is provided with the water injection pump; the steam generator comprises a closed cavity covered outside an exhaust manifold of the engine and a steam storage tank communicated with the closed cavity through an electromagnetic one-way valve, a jet orifice of the water jet pump is arranged beside the exhaust manifold in the closed cavity, and the steam storage tank is communicated with the steam engine through the electromagnetic one-way valve; and the tail end of the exhaust manifold is also provided with a thermomotor, and the thermomotor is connected with an electromagnetic clutch through a transmission shaft and is connected with and drives the three-phase generator through the electromagnetic clutch.
2. The engine exhaust gas power generation system of claim 1, wherein said steam condenser further comprises a controller-controlled surge safety solenoid valve and a condenser pressure sensor connected to the controller.
3. The engine exhaust gas power generation system according to claim 2, wherein the pressure-stabilizing safety solenoid valve in the power generation system is in communication with the outside.
4. The engine exhaust gas power generation system of claim 1, wherein the electrical appliance is an on-board electrical appliance.
5. The engine exhaust gas power generation system according to claim 1, wherein the electrical appliance is a vehicle drive motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710561347.7A CN107401442B (en) | 2017-07-11 | 2017-07-11 | Engine waste gas power generation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710561347.7A CN107401442B (en) | 2017-07-11 | 2017-07-11 | Engine waste gas power generation system |
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| Publication Number | Publication Date |
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| CN107401442A CN107401442A (en) | 2017-11-28 |
| CN107401442B true CN107401442B (en) | 2019-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710561347.7A Active CN107401442B (en) | 2017-07-11 | 2017-07-11 | Engine waste gas power generation system |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108301938A (en) * | 2018-04-10 | 2018-07-20 | 天津科技大学 | A kind of steam and gasoline hybrid power engine that can utilize waste gas residual heat |
| CN110185553B (en) * | 2019-07-18 | 2024-05-31 | 陈立权 | Power generation system utilizing engine working waste heat |
| CN113107628A (en) * | 2021-04-30 | 2021-07-13 | 江南造船(集团)有限责任公司 | Ship power generation system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047047A (en) * | 2013-01-24 | 2013-04-17 | 矫明义 | Engine waste gas power device and application method thereof |
| DE102012021326A1 (en) * | 2012-10-26 | 2014-04-30 | Voith Patent Gmbh | Method for generating electrical power for e.g. alternative current power supply network, involves controlling supply of vaporized working medium from vaporizer to steam engine such that frequency of current fed to network is kept constant |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63208606A (en) * | 1987-02-25 | 1988-08-30 | Toyota Motor Corp | Cooling device for exhaust manifold |
| CN201810420U (en) * | 2010-09-20 | 2011-04-27 | 广西玉柴机器股份有限公司 | Engine waste heat energy reclaiming device |
| US20160237887A1 (en) * | 2015-02-17 | 2016-08-18 | Jeffrey Martin Lilly | Internal combustion engine system and method |
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2017
- 2017-07-11 CN CN201710561347.7A patent/CN107401442B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102012021326A1 (en) * | 2012-10-26 | 2014-04-30 | Voith Patent Gmbh | Method for generating electrical power for e.g. alternative current power supply network, involves controlling supply of vaporized working medium from vaporizer to steam engine such that frequency of current fed to network is kept constant |
| CN103047047A (en) * | 2013-01-24 | 2013-04-17 | 矫明义 | Engine waste gas power device and application method thereof |
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