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CN112377287A - Supercharged engine exhaust energy comprehensive utilization system based on thermoelectric device and utilization method thereof - Google Patents

Supercharged engine exhaust energy comprehensive utilization system based on thermoelectric device and utilization method thereof Download PDF

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Publication number
CN112377287A
CN112377287A CN202011215445.3A CN202011215445A CN112377287A CN 112377287 A CN112377287 A CN 112377287A CN 202011215445 A CN202011215445 A CN 202011215445A CN 112377287 A CN112377287 A CN 112377287A
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China
Prior art keywords
exhaust
way
internal combustion
combustion engine
turbine
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Pending
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CN202011215445.3A
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Chinese (zh)
Inventor
杨立平
冀帅壮
董全
宋恩哲
姚崇
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Harbin Engineering University
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Harbin Engineering University
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Priority to CN202011215445.3A priority Critical patent/CN112377287A/en
Publication of CN112377287A publication Critical patent/CN112377287A/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N5/00Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy
    • F01N5/02Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy the devices using heat
    • F01N5/025Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy the devices using heat the device being thermoelectric generators
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/08Other arrangements or adaptations of exhaust conduits
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B37/00Engines characterised by provision of pumps driven at least for part of the time by exhaust
    • F02B37/12Control of the pumps
    • F02B37/16Control of the pumps by bypassing charging air
    • F02B37/162Control of the pumps by bypassing charging air by bypassing, e.g. partially, intake air from pump inlet to pump outlet
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B37/00Engines characterised by provision of pumps driven at least for part of the time by exhaust
    • F02B37/12Control of the pumps
    • F02B37/18Control of the pumps by bypassing exhaust from the inlet to the outlet of turbine or to the atmosphere
    • F02B37/183Arrangements of bypass valves or actuators therefor
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10Air intakes; Induction systems
    • F02M35/1015Air intakes; Induction systems characterised by the engine type
    • F02M35/10157Supercharged engines
    • F02M35/10163Supercharged engines having air intakes specially adapted to selectively deliver naturally aspirated fluid or supercharged fluid
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10Air intakes; Induction systems
    • F02M35/10242Devices or means connected to or integrated into air intakes; Air intakes combined with other engine or vehicle parts
    • F02M35/10255Arrangements of valves; Multi-way valves
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/10Internal combustion engine [ICE] based vehicles
    • Y02T10/12Improving ICE efficiencies

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Supercharger (AREA)

Abstract

本发明的目的在于提供基于热电设备的增压发动机排气能量综合利用系统及其利用方法,内燃机进气道通过三通方式连接压气机和大气,内燃机排气道通过三通方式连接涡轮进气三通管道和内燃机自然排气三通管道,涡轮后方的换热器进气三通管道、内燃机自然排气三通管道和换热器气相进气通道以三通方式相连,换热器液相入口连接能量储存池出口,换热器液相出口通过工质泵连接能量储存池入口,能量储存池的外壁上附着热电设备,热电设备连接储能单元。本发明能实现不同工况下两进排气通道之间的切换,通过热电设备转化为电能并通过储能元件加以储存,实现通过由换热器、能量储存池、工质泵所形成的闭合回路对不同工况下内燃机尾气的余热能量进行回收。

Figure 202011215445

The purpose of the present invention is to provide a system for comprehensive utilization of exhaust energy of a supercharged engine based on thermoelectric equipment and its utilization method. The three-way pipe and the natural exhaust three-way pipeline of the internal combustion engine, the heat exchanger intake three-way pipeline behind the turbine, the internal combustion engine natural exhaust three-way pipeline and the gas-phase intake channel of the heat exchanger are connected in a three-way manner. The inlet is connected to the outlet of the energy storage pool, the liquid phase outlet of the heat exchanger is connected to the inlet of the energy storage pool through the working fluid pump, the outer wall of the energy storage pool is attached with a thermoelectric device, and the thermoelectric device is connected to the energy storage unit. The invention can realize the switching between two inlet and exhaust channels under different working conditions, convert it into electric energy through thermoelectric equipment and store it through energy storage elements, and realize the closed circuit formed by heat exchanger, energy storage pool and working fluid pump. The circuit recovers the waste heat energy of the exhaust gas of the internal combustion engine under different working conditions.

Figure 202011215445

Description

Supercharged engine exhaust energy comprehensive utilization system based on thermoelectric device and utilization method thereof
Technical Field
The invention relates to an engine, in particular to an engine exhaust energy utilization system.
Background
The internal combustion engine is one of the main power devices due to the characteristics of high thermal efficiency, small weight and size, simple and convenient operation and maintenance and the like. The internal combustion engine is used as a main form of power output, the efficiency of the internal combustion engine is not more than 45% at most, most energy is dissipated in the form of heat energy, and the energy dissipated in the form of tail gas accounts for about 35% of the total energy. If the high-grade tail gas energy with high specific gravity can be effectively utilized, the fuel consumption can be reduced, the effective output power of the engine can be improved, and the method has important significance for realizing energy conservation and emission reduction of the internal combustion engine. Therefore, a method for improving the fuel utilization efficiency of an internal combustion engine by recycling the exhaust gas waste heat is increasingly gaining attention.
Disclosure of Invention
The invention aims to provide a thermoelectric equipment-based supercharged engine exhaust energy comprehensive utilization system and a thermoelectric equipment-based supercharged engine exhaust energy comprehensive utilization method for realizing recovery of exhaust waste heat of an engine under different working conditions.
The purpose of the invention is realized as follows:
the invention relates to a supercharged engine exhaust energy comprehensive utilization system based on thermoelectric equipment, which is characterized in that: the internal combustion engine air inlet passage is connected with the air compressor and the atmosphere in a three-way mode, the internal combustion engine exhaust passage is connected with the turbine air inlet three-way pipeline and the internal combustion engine natural exhaust three-way pipeline in a three-way mode, a turbine bypass valve is arranged between the turbine air inlet three-way pipeline and the internal combustion engine natural exhaust three-way pipeline, the heat exchanger air inlet three-way pipeline behind the turbine, the internal combustion engine natural exhaust three-way pipeline and the heat exchanger gas phase air inlet channel are connected in a three-way mode, the heat exchanger liquid phase inlet is connected with the outlet of the energy storage pool, the heat exchanger liquid phase outlet is connected with the inlet of.
The supercharged engine exhaust energy comprehensive utilization system based on the thermoelectric device can further comprise:
1. the air inlet channel, the air compressor and the atmosphere tee joint of the internal combustion engine are provided with an air inlet channel tee joint valve, the exhaust channel, the turbine air inlet tee joint pipeline and the natural exhaust tee joint pipeline of the internal combustion engine are provided with an exhaust channel tee joint valve, the air inlet channel tee joint valve and the exhaust channel tee joint valve are ball valves, and the turbine bypass valve is a butterfly valve.
2. The energy storage pool is of a water storage tank structure, and the internal working medium is paraffin oil.
The invention relates to a method for comprehensively utilizing the exhaust energy of a supercharged engine based on thermoelectric equipment, which is characterized by comprising the following steps of: the air inlet three-way valve, the air outlet three-way valve and the turbine bypass valve are connected with the control unit;
(1) the internal combustion engine is in a low working condition, the exhaust of the internal combustion engine is insufficient to drive the turbocharger to pressurize air, the air inlet of the air inlet three-way valve connected with the air compressor is closed through the control unit, and the air inlet three-way valve and the air inlet of the atmosphere are opened to form a natural air suction channel of the internal combustion engine; closing an exhaust port of the exhaust passage three-way valve connected with a turbine air inlet three-way pipeline, opening the exhaust port connected with a natural exhaust three-way pipeline of the internal combustion engine to form a natural exhaust passage, and closing a turbine bypass valve; the waste gas is discharged from an exhaust pipe, enters a natural exhaust three-way pipeline of the internal combustion engine through an exhaust passage three-way valve, finally enters a gas phase flow path of a heat exchanger from a gas inlet three-way pipeline of the heat exchanger, and exchanges heat with a liquid phase flow path, fluid which exchanges heat enters an energy storage pool under the action of a working medium pump, meanwhile, liquid in the energy storage pool enters the heat exchanger through the suction action of the working medium pump to complete the circulation of the working medium, and the energy storage pool transmits heat to thermoelectric equipment attached to the energy storage pool, so that the thermoelectric equipment generates electricity and enters an energy storage unit through the transmission of a;
(2) the internal combustion engine is in a high working condition, exhaust of the internal combustion engine can drive the turbocharger to pressurize air, an air inlet connected with an air compressor through an air inlet three-way valve is opened through a control unit, the air inlet of the air inlet three-way valve and the air is closed, high-pressure air enters an internal combustion engine cylinder through the air inlet three-way valve, an exhaust port connected with a turbine air inlet three-way valve through an exhaust passage three-way valve is opened, an exhaust port connected with a natural exhaust three-way pipe of the internal combustion engine is closed, and the opening of a turbine bypass valve is controlled to prevent the rotating speed of the turbine from exceeding the maximum speed through comparison of; after being discharged from an exhaust pipe, tail gas enters a turbine through an exhaust passage three-way valve to do work on the turbine so as to drive a gas compressor to rotate through a turbine shaft, meanwhile, a turbine bypass valve is partially opened, part of the tail gas enters a natural exhaust three-way pipeline of an internal combustion engine through the exhaust three-way valve, finally, the tail gas and the tail gas discharged by the turbine are gathered in a gas inlet three-way pipeline of a heat exchanger and enter a gas phase flow path of the heat exchanger, heat exchange is carried out between the tail gas and the liquid phase flow path, fluid subjected to heat exchange enters an energy storage pool under the action of a working medium pump, meanwhile, liquid in the energy storage pool enters the heat exchanger through the suction action of the working medium pump to complete the circulation of the working medium, and the energy storage pool.
The method for comprehensively utilizing the exhaust energy of the supercharged engine based on the thermoelectric device can further comprise the following steps of:
1. the method comprises the steps of identifying the output power of the internal combustion engine, judging whether the output power is greater than a set value or not, if the output power is less than the set value, judging whether a system is in a low working condition or not, detecting an air inlet three-way valve and an air outlet three-way valve to judge open channels of the air inlet three-way valve and the air outlet three-way valve, switching the two valve channels through a control unit, enabling the two valve channels to open the two channels respectively, simultaneously checking whether a turbine bypass valve is completely closed or not, and if the turbine bypass valve is; if the set value is larger than or equal to the set value, the system is judged to be in a high working condition, whether the three-way valve of the air inlet channel and the three-way valve of the exhaust channel respectively open the supercharging air inlet channel and the exhaust turbine channel is detected, the channels opened by the two valves are controlled by the control unit, the two channels on the two valves are opened, the opening degree of the turbine bypass valve is detected, the opening degree of the turbine bypass valve is compared with preset parameters of the control unit under the same working condition, if the two valves are equal, the controller of the turbine bypass valve does not work, and if not.
The invention has the advantages that:
1. the invention can utilize the layout of the pipeline and the control of the valve, and finally convert the heat energy in the tail gas of the internal combustion engine into the electric energy for storage through the heat exchanger, the energy storage pool, the thermoelectric equipment and other devices, thereby realizing the aim of recovering the waste heat of the tail gas.
2. The invention can have two working modes of high working condition and low working condition, has wide operating power range, can recover and store energy with different qualities, and has good adaptability.
3. The system has the advantages of small structure size, light weight and strong adaptability, can be applied to vehicles such as automobiles and ships, and can meet the power generation requirement of a power plant.
4. The thermoelectric equipment selected by the invention has the characteristics of wide application range, light weight and the like, and the application of the thermoelectric equipment as an energy recovery device can not only improve the efficiency, but also effectively reduce the use area and make the system more compact.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a valve control flow diagram of the present invention.
Detailed Description
The invention will now be described in more detail by way of example with reference to the accompanying drawings in which:
with reference to fig. 1-2, the supercharged engine exhaust energy comprehensive utilization system based on thermoelectric equipment of the present invention is composed of an internal combustion engine 1, an intake passage three-way valve 2, a compressor 3, a turbine shaft 4, an exhaust passage three-way valve 5, a turbine intake three-way pipeline 6, a turbine 7, a heat exchanger intake three-way pipeline 8, an energy storage unit 9, an energy storage pool 10, thermoelectric equipment 11, a working medium pump 12, a heat exchanger 13, an internal combustion engine natural exhaust three-way pipeline 14, a turbine bypass valve 15, a control unit 16, pipelines, etc., and has the specific structure that:
1. the air inlet three-way valve 5 is provided with two air inlets and an air outlet, the air outlet is directly connected with an air inlet of the internal combustion engine 1, one of the air inlets is connected with the outlet of the air compressor 3, and the air compressor 3 is connected with the turbine 7 through the turbine shaft 4; the exhaust passage three-way valve 5 is provided with two exhaust ports and one air inlet, the air inlet is connected with an exhaust pipe of the internal combustion engine 1, the two exhaust ports are respectively connected with a turbine air inlet three-way pipeline 6 and a branch pipe of a natural exhaust three-way pipeline 14 of the internal combustion engine, the other branch pipe of the two three-way pipelines is connected with two ends of a turbine bypass valve 15, the last branch of the turbine air inlet three-way pipeline 6 is connected with an inlet of a turbine 7, and an outlet of the turbine 7 and one branch pipe of the natural exhaust three-way pipeline 14 of the internal combustion engine are connected with two branch pipes;
2. the heat exchanger 13 has a gas-liquid two-phase flow path in common, a gas phase inlet of the heat exchanger is connected with a branch of a heat exchanger gas inlet three-way pipeline 8, a liquid phase inlet of the heat exchanger is connected with an outlet of the energy storage pool 10 through a pipeline, a liquid phase outlet of the heat exchanger is connected with an inlet of the energy storage pool 10 through a working medium pump 12, the thermoelectric device 11 is attached to the outer wall of the energy storage pool 10 and is connected with the energy storage unit 9 through a lead, and the control unit 16 is connected with each valve.
The energy storage pool 10 is a small water storage tank with an outlet and an inlet, and the working medium in the energy storage pool is paraffin oil with high flash point, high boiling point and high specific heat capacity.
Exhaust passage three-way valve 5, intake duct three-way valve 2 are ball valves, turbine bypass valve 15 be the butterfly valve, the three all is connected with control unit 16 and is controlled by it, intake duct three-way valve 2 can realize two air inlets between flow switch with the gas vent form a flow path, exhaust passage three-way valve 5 can realize two gas vents between flow switch with the air inlet form a flow path, turbine bypass valve 15 can carry out the control of valve aperture.
The periphery of the pipelines is wrapped with heat insulation materials to prevent heat dissipation, and the pipelines are connected only by bolts.
The control is that the control unit 16 controls the exhaust passage three-way valve 5, the intake passage three-way valve 2 and the turbine bypass valve 15 to realize the control of the gas flow path through identifying the working condition, and finally, the energy is recovered and stored through the heat exchanger 13, the energy storage pool 10, the thermoelectric device 11, the energy storage unit 9 and the like, and the specific implementation mode is as follows:
1. the internal combustion engine 1 is in a low working condition, the exhaust of the internal combustion engine 1 is insufficient to drive the turbocharger to pressurize air, an air inlet of the air inlet passage three-way valve 2 connected with the air compressor is closed through the control unit 16, and the other air inlet is opened to form a natural air suction channel of the internal combustion engine 1 to enable the internal combustion engine to naturally suck air; an exhaust port of the exhaust passage three-way valve 5 connected with the turbine air inlet three-way pipeline 6 is closed, and an exhaust port connected with the internal combustion engine natural exhaust three-way pipeline 14 is opened to form natural exhaust; the turbine bypass valve 15 is fully closed. The internal combustion engine naturally inhales air through the air inlet three-way valve 2, after air participates in combustion and does work in a cylinder, waste gas is discharged from an exhaust pipe, enters the internal combustion engine natural exhaust three-way pipe 14 through the exhaust pipe three-way valve 5, finally enters a gas phase flow path of the heat exchanger 13 from the heat exchanger air inlet three-way pipe 8 to exchange heat with a liquid phase flow path, fluid which exchanges heat enters the energy storage pool 10 under the action of the working medium pump 12, meanwhile, liquid in the energy storage pool 10 enters the heat exchanger 13 through the suction action of the working medium pump 12 to complete working medium circulation, the energy storage pool 10 with higher temperature transmits heat to the thermoelectric equipment 11 attached to the energy storage pool, and the thermoelectric equipment generates electricity and enters the energy storage unit 9 through the transmission of a lead.
2. The internal combustion engine 1 is in a high working condition, exhaust of the internal combustion engine 1 can drive a turbocharger to pressurize air, an air inlet connected with an air compressor through an air inlet three-way valve 2 is opened through a control unit 16, high-pressure air enters an internal combustion engine cylinder through the air inlet three-way valve 2 by closing the other air inlet, an exhaust port connected with a turbine air inlet three-way valve 6 through an exhaust three-way valve 5 is opened, an exhaust port connected with a natural exhaust three-way pipe 14 of the internal combustion engine is closed, high-quality tail gas enters a turbine 7, and meanwhile, the opening degree of a turbine bypass valve 15 is controlled by comparing preset parameters in a control system with the working condition to prevent the turbine from rotating too fast. High-pressure air from a compressor 3 enters a cylinder of an internal combustion engine 1 through an air inlet three-way valve 2, combustion work is performed in the cylinder, generated tail gas is discharged from an exhaust pipe, enters a turbine 7 through an exhaust three-way valve 5 to perform work on the turbine so as to drive the compressor to rotate through a turbine shaft, meanwhile, a turbine bypass valve 15 is opened at a certain angle, a part of tail gas enters a natural exhaust three-way pipeline 14 of the internal combustion engine through the turbine bypass valve, finally, the tail gas discharged by the turbine 7 is converged in a heat exchanger air inlet three-way pipeline 8 and enters a gas phase flow path of a heat exchanger 13 to perform heat exchange with a liquid phase flow path, fluid subjected to heat exchange enters an energy storage pool under the action of a working medium pump 12, meanwhile, liquid in the energy storage pool 10 enters the heat exchanger through the suction action of the working medium pump 12 to complete the circulation of the working medium, and, so that the generated electricity is transmitted into the energy storage unit 16 through the lead and stored therein.
The working condition identification and the specific control flow of the valve are as follows: as shown in fig. 2, firstly, the output power of the internal combustion engine is identified, and then whether the output power is greater than a set value is judged, if the output power is less than the set value, the system is judged to be in a low working condition, the inlet three-way valve 2 and the outlet three-way valve 5 are detected to judge the channels opened by the inlet three-way valve and the outlet three-way valve, if the natural suction channel and the natural exhaust channel are respectively opened, the system does not operate, otherwise, the two valve channels are switched through the control unit through the analysis of the control system, so that the two channels are respectively opened, and simultaneously, whether the turbine bypass valve 15 is completely closed is checked, if the system is completely closed; (ii) a If the pressure of the air inlet channel three-way valve 2 and the exhaust channel three-way valve 5 is smaller than the set value, the system is judged to be in a high working condition, whether the pressure boosting air inlet channel and the exhaust turbine channel are respectively opened or not is detected, if the pressure boosting air inlet channel and the exhaust turbine channel are opened, the two valve controllers are not operated, otherwise, the channels opened by the two valves are controlled through the controller after the analysis of the control system, the two channels on the two valves are opened, meanwhile, the system can detect the opening degree of the turbine bypass valve 15 and compare the opening degree with preset parameters in the system under the same working condition, if the pressure boosting air inlet channel and the exhaust turbine channel are equal, the controller does not work, and otherwise, the controller adjusts the.

Claims (5)

1.基于热电设备的增压发动机排气能量综合利用系统,其特征是:内燃机进气道通过三通方式连接压气机和大气,内燃机排气道通过三通方式连接涡轮进气三通管道和内燃机自然排气三通管道,涡轮进气三通管道和内燃机自然排气三通管道之间设置涡轮旁通阀门,涡轮后方的换热器进气三通管道、内燃机自然排气三通管道和换热器气相进气通道以三通方式相连,换热器液相入口连接能量储存池出口,换热器液相出口通过工质泵连接能量储存池入口,能量储存池的外壁上附着热电设备,热电设备连接储能单元。1. Based on the comprehensive utilization system of supercharged engine exhaust energy of thermoelectric equipment, it is characterized in that: the internal combustion engine air inlet is connected to the compressor and the atmosphere by the three-way mode, and the internal combustion engine exhaust channel is connected by the three-way mode to the turbine intake three-way pipeline and the atmosphere. The internal combustion engine natural exhaust three-way pipeline, the turbine intake three-way pipeline and the internal combustion engine natural exhaust three-way pipeline are provided with a turbine bypass valve, the heat exchanger intake three-way pipeline behind the turbine, the internal combustion engine natural exhaust three-way pipeline and the internal combustion engine natural exhaust three-way pipeline. The gas-phase inlet channels of the heat exchanger are connected in a three-way manner, the liquid-phase inlet of the heat exchanger is connected to the outlet of the energy storage pool, the liquid-phase outlet of the heat exchanger is connected to the inlet of the energy storage pool through the working fluid pump, and the outer wall of the energy storage pool is attached with thermoelectric equipment , the thermoelectric device is connected to the energy storage unit. 2.根据权利要求1所述的基于热电设备的增压发动机排气能量综合利用系统,其特征是:内燃机进气道、压气机和大气三通处安装进气道三通阀门,内燃机排气道、涡轮进气三通管道和内燃机自然排气三通管道三通处安装排气道三通阀门,进气道三通阀门、排气道三通阀门为球阀,涡轮旁通阀门为蝶阀。2. the supercharged engine exhaust energy comprehensive utilization system based on thermoelectric equipment according to claim 1, is characterized in that: the intake port three-way valve is installed at the internal combustion engine intake port, the compressor and the atmospheric three-way, and the internal combustion engine exhaust gas The exhaust port three-way valve is installed at the three-way point of the three-way pipe, the turbine intake three-way pipe and the internal combustion engine natural exhaust three-way pipe, the intake port three-way valve and the exhaust port three-way valve are ball valves, and the turbine bypass valve is a butterfly valve. 3.根据权利要求1或2所述的基于热电设备的增压发动机排气能量综合利用系统,其特征是:所述能量储存池为储水箱结构,内部的工质为石蜡油。3 . The system for comprehensive utilization of exhaust energy of a supercharged engine based on a thermoelectric device according to claim 1 or 2 , wherein the energy storage pool is a water storage tank structure, and the internal working medium is paraffin oil. 4 . 4.基于热电设备的增压发动机排气能量综合利用方法,其特征是:进气道三通阀门、排气道三通阀门、涡轮旁通阀门连接控制单元;4. A method for comprehensive utilization of exhaust energy of a supercharged engine based on thermoelectric equipment, characterized in that: a three-way valve in an intake port, a three-way valve in an exhaust port, and a turbine bypass valve are connected to a control unit; (1)内燃机处于低工况,内燃机的排气不足以带动涡轮增压器使其对空气加压,通过控制单元关闭进气道三通阀门与压气机相连的进气口,打开进气道三通阀门与大气的进气口形成内燃机自然吸气通道;关闭排气道三通阀门与涡轮进气三通管道相连的排气口,打开与内燃机自然排气三通管道相连的排气口,形成自然排气通道,关闭涡轮旁通阀门;废气从排气管排出经排气道三通阀门进入内燃机自然排气三通管道,最终从换热器进气三通管道进入换热器的气相流路中,与液相流路发生热交换,发生热交换的流体经工质泵的作用进入能量储存池,同时能量储存池中液体通过工质泵的抽吸作用进入换热器中完成工质的循环,能量储存池把热量传给附着于其上的热电设备,使其发电并经导线的传输进入储能单元并储存于其中;(1) The internal combustion engine is in a low working condition, and the exhaust gas of the internal combustion engine is not enough to drive the turbocharger to pressurize the air. The control unit closes the intake port connected with the three-way valve of the intake port and the compressor, and opens the intake port. The three-way valve and the air inlet of the atmosphere form the natural suction channel of the internal combustion engine; close the exhaust port connected with the three-way valve of the exhaust port and the three-way intake pipe of the turbine, and open the exhaust port connected with the natural exhaust three-way pipe of the internal combustion engine , form a natural exhaust passage, close the turbine bypass valve; the exhaust gas is discharged from the exhaust pipe through the exhaust three-way valve into the natural exhaust three-way pipe of the internal combustion engine, and finally enters the heat exchanger from the intake three-way pipe of the heat exchanger. In the gas phase flow path, heat exchange occurs with the liquid phase flow path, and the heat exchanged fluid enters the energy storage pool through the action of the working fluid pump, and the liquid in the energy storage pool enters the heat exchanger through the pumping action of the working fluid pump. The cycle of the working medium, the energy storage pool transfers heat to the thermoelectric equipment attached to it, so that it generates electricity and enters the energy storage unit through the transmission of the wire and stores it in it; (2)内燃机处于高工况,内燃机的排气能够带动涡轮增压器使其对空气加压,通过控制单元打开进气道三通阀门与压气机相连的进气口,关闭进气道三通阀门与大气的进气口使高压空气经进气道三通阀门进入内燃机气缸中,打开排气道三通阀门与涡轮进气三通管道相连的排气口,关闭与内燃机自然排气三通管道相连的排气口,通过控制单元预置参数与所处工况的对比,实现对涡轮旁通阀门开度的控制以防止涡轮转速超过最大速度;尾气从排气管排出后,经过排气道三通阀门进入涡轮中对涡轮做功以通过涡轮轴带动压气机旋转,同时涡轮旁通阀门部分打开,一部分尾气经其进入内燃机自然排气三通管道中,最终与涡轮所排出尾气汇聚于换热器进气三通管道并进入到换热器的气相流路中,与液相流路发生热交换,发生热交换的流体经工质泵的作用进入能量储存池,同时能量储存池中液体通过工质泵的抽吸作用进入换热器中完成工质的循环,能量储存池把热量传给附着于其上的热电设备,使其发电并经导线的传输进入储能单元并储存于其中。(2) The internal combustion engine is in a high working condition. The exhaust gas of the internal combustion engine can drive the turbocharger to pressurize the air. The control unit opens the three-way valve of the intake port and the intake port connected to the compressor, and closes the three-way intake port. Connect the valve to the air inlet of the atmosphere so that the high-pressure air enters the cylinder of the internal combustion engine through the three-way valve of the intake port, open the exhaust port connected with the three-way valve of the exhaust port and the three-way intake pipe of the turbine, and close the three-way natural exhaust of the internal combustion engine. Through the comparison between the preset parameters of the control unit and the working conditions, the opening of the turbine bypass valve is controlled to prevent the turbine speed from exceeding the maximum speed; after the exhaust gas is discharged from the exhaust pipe, it passes through the exhaust pipe. The airway three-way valve enters the turbine to perform work on the turbine to drive the compressor to rotate through the turbine shaft. At the same time, the turbine bypass valve is partially opened, and part of the exhaust gas enters the natural exhaust three-way pipe of the internal combustion engine through it, and finally converges with the exhaust gas discharged from the turbine. The intake tee of the heat exchanger enters the gas phase flow path of the heat exchanger, and exchanges heat with the liquid phase flow path. The heat exchanged fluid enters the energy storage pool through the action of the working fluid pump. The liquid enters the heat exchanger through the pumping action of the working fluid pump to complete the circulation of the working fluid. The energy storage pool transfers heat to the thermoelectric equipment attached to it to generate electricity and enter the energy storage unit through the transmission of wires and store it in the energy storage unit. in. 5.根据权利要求4所述的基于热电设备的增压发动机排气能量综合利用方法,其特征是:对内燃机输出功率进行识别,然后判断其是否大于设定值,如果小于设定值判定系统处于低工况,检测进气道三通阀门和排气道三通阀门判断二者开放的通道,通过控制单元来实现两阀门通道的切换,使二者分别开放上述两个通道,同时检查涡轮旁通阀门是否完全关闭,若未完全关闭,则通过控制单元实现涡轮旁通阀门的关闭;若大于或等于设定值判定系统处于高工况,检测进气道三通阀门和排气道三通阀门是否分别开放增压进气通道和废气涡轮通道,通过控制单元对两阀门所开放的通道进行控制,使两阀门上的上述两个通道打开,检测涡轮旁通阀门的开度,与同一工况下控制单元预置参数进行对比,二者若相等涡轮旁通阀门的控制器不工作,否则控制单元对阀门的开度进行调整。5. The method for comprehensive utilization of supercharged engine exhaust energy based on thermoelectric equipment according to claim 4, characterized in that: the output power of the internal combustion engine is identified, and then it is judged whether it is greater than the set value, and if it is less than the set value, the judgment system In low working conditions, check the three-way valve of the intake port and the three-way valve of the exhaust port to determine the open channel of the two, and realize the switching of the two valve channels through the control unit, so that the two can open the above two channels respectively, and check the turbine at the same time. Whether the bypass valve is completely closed, if it is not completely closed, the turbine bypass valve will be closed through the control unit; if it is greater than or equal to the set value, it is determined that the system is in a high working condition, and the three-way valve of the intake port and the three-way valve of the exhaust port are detected. Whether the through valve opens the supercharged intake channel and the exhaust gas turbine channel respectively, the control unit controls the channels opened by the two valves, so that the above two channels on the two valves are opened, and the opening degree of the turbine bypass valve is detected, which is the same as the same The preset parameters of the control unit are compared under the working conditions. If the two are equal, the controller of the turbine bypass valve will not work, otherwise the control unit will adjust the valve opening.
CN202011215445.3A 2020-11-04 2020-11-04 Supercharged engine exhaust energy comprehensive utilization system based on thermoelectric device and utilization method thereof Pending CN112377287A (en)

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CN1594849A (en) * 2004-06-17 2005-03-16 上海交通大学 Bypass system for combustion engine in case of provisional clogging of intake and exhaust duct
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Application publication date: 20210219