CN207197807U - A kind of turbocharger performance testing stand with exhaust energy recovery - Google Patents

Abstract

The utility model relates to a turbocharger performance test bench with waste gas energy recovery, which comprises a turbocharger turbine and a turbocharger compressor. The turbocharger turbine is sequentially connected to a bellows, a combustion chamber, a first One-way valve, muffler, intake valve and blower, wherein turbocharger turbine, bellows, combustion chamber are connected in parallel with said turbocharger compressor, exhaust valve, first intercooler and second Two one-way valves, an electromagnetic valve, a second intercooler, a third one-way valve and an air storage tank are sequentially connected between the exhaust valve and the first intercooler, and the air storage tank is also connected to the bypass The output end of the charging valve on the exhaust pipe of the engine is connected, and an exhaust disc valve is arranged on the exhaust pipe of the engine; the waste gas valve is connected in parallel on the intake pipe and exhaust pipe of the turbocharger turbine, and the utility model has a turbine with waste gas energy recovery. The supercharger performance test bench has simple structure, reasonable design and low production cost. The test method is easy to operate and reliable in operation.

Description

A turbocharger performance test bench with exhaust gas energy recovery

Technical field:

The utility model relates to a turbocharger test bench for vehicles, in particular to a turbocharger performance test bench with waste gas energy recovery, which belongs to the technical field of vehicle component testing.

Background technique:

Usually, when an engine with a turbocharger runs to a high-speed and heavy-load condition, the wastegate bypasses part of the wastegas to limit the boost pressure and the speed of the supercharger. Due to the bypass effect of the wastegate, the current turbocharger does not Insufficient recovery of exhaust gas energy from the engine. Therefore, it is of great significance to adopt technical measures to transform existing vehicles, implement energy recovery, improve engine performance and improve fuel economy. In the process of R&D and verification of the engine, the bench test is an important part of testing performance indicators and reliability. Existing test benches have some disadvantages when performing exhaust gas recovery, such as: compared with the single turbocharger test bench, the composite turbocharger test bench has a complicated pipeline structure; the electric-assisted turbocharger test bench is expensive, Poor reliability, easy to cause secondary pollution.

Invention content:

The purpose of the utility model is to provide a turbocharger performance test bench with exhaust gas energy recovery, the turbocharger performance test bench with exhaust gas energy recovery is simple in structure, reasonable in design, low in production cost, and the test method is easy to operate , reliable operation, can recover the waste gas energy bypassed by the waste gas valve under high-speed and heavy-load conditions, and the compressed air stored in the gas storage tank is used as the intake air of the engine for re-compression.

The utility model has a turbocharger performance test bench with waste gas energy recovery, which includes a turbocharger turbine 8 and a turbocharger compressor 9, and is characterized in that: the turbocharger turbine 8 is connected to the bellows 6, The combustion chamber 5, the first one-way valve 4, the muffler 3, the intake valve 2 and the blower 1, wherein the turbocharger turbine 8, the bellows 6, and the combustion chamber 5 are connected in parallel with the turbocharger compressed air connected in sequence Machine 9, exhaust valve 10, first intercooler 15 and second one-way valve 16, between the exhaust valve 10 and the first intercooler 15 are sequentially connected with solenoid valve 11, second intercooler 12 And the 3rd one-way valve 13 and gas storage tank 14, described gas storage tank 14 is also connected with the charging valve A7 output end that is next to on the engine exhaust pipe, is provided with exhaust disc valve on the engine exhaust pipe; Turbine The waste gas valve 7 is connected in parallel on the intake pipe 19 and the exhaust pipe 20 of the turbocharger turbine 8, and the turbocharger compressor 9, exhaust valve 10, first intercooler 15 and second one-way valve connected in sequence 16 constitutes the self-circulation system of the test bench, and the solenoid valve 11, the second intercooler 12, the third check valve 13 and the gas storage tank 14 connected in sequence constitute an exhaust gas energy recovery device.

Further, a leak valve 18 is bypassed between the blower 1 and the intake valve 2 .

Further, pressure sensors, temperature sensors and flow sensors are provided on the pipelines between the turbocharger compressor 9 and the exhaust valve 10 , and the pipelines between the turbocharger turbine 8 and the bellows 6 .

Further, a pressure sensor and a temperature sensor are provided on the intake pipe 21 of the turbocharger compressor 9 and the exhaust pipe 20 of the turbocharger turbine 8 , and a pressure gauge is connected to the gas storage tank 14 .

Further, the combustion chamber 5 is connected with an oil supply system, and the turbocharger turbine 8 and the turbocharger compressor 9 are connected with a lubricating system.

The test method of the turbocharger performance test bench with exhaust gas energy recovery of the utility model is characterized in that: the turbocharger performance test bench with exhaust gas energy recovery includes a turbocharger turbine 8 and a turbocharger compressed air The machine 9 is characterized in that: the turbocharger turbine 8 is sequentially connected to the bellows 6, the combustion chamber 5, the first check valve 4, the muffler 3, the intake valve 2 and the blower 1, wherein the turbocharger turbine 8. The bellows 6 and the combustion chamber 5 are connected in parallel with the turbocharger compressor 9, the exhaust valve 10, the first intercooler 15 and the second check valve 16, and the exhaust valve 10 and An electromagnetic valve 11, a second intercooler 12, a third one-way valve 13 and an air storage tank 14 are sequentially connected between the first intercooler 15, and the air storage tank 14 is also connected to the exhaust pipe of the engine by the side. The output end of the charging valve A7 is connected, and an exhaust disc valve is arranged on the engine exhaust pipe; the waste gas valve 7 is connected in parallel on the intake pipe 19 and the exhaust pipe 20 of the turbocharger turbine 8, and the turbocharger connected in sequence Compressor 9, exhaust valve 10, first intercooler 15 and second one-way valve 16 constitute the self-circulation system of the test bench, and the solenoid valve 11, second intercooler 12 and the third one-way valve connected in sequence 13 and air storage tank 14 constitute the waste gas energy recovery device; during work, open the blower inlet valve 2, the compressor exhaust valve 10, the electromagnetic valve 11, close the blower pressure relief valve 18, close the waste gas valve 7, open the blower 1, wait The system wind pressure and flow are stable, turn on the ignition switch of the engine, the air in the test bench pipeline flows through the combustion chamber 5, the combustion exhaust gas enters the bellows 6, enters the turbocharger turbine 8 intake pipe 19 and the turbocharger turbine 8, and accelerates The rotor of the turbocharger rotates, and exhaust gas is discharged into the atmosphere through the exhaust pipe 20; the rotation of the turbine drives the impeller of the coaxial turbocharger compressor 9 to rotate, and the compressed air enters the turbocharger compressor 9 of the self-circulation system of the test bench. The exhaust valve 10 flows into the gas storage tank 14 through the solenoid valve 11, the intercooler 12 and the intercooler 15; when the pressure of the gas storage tank 14 reaches the target value, the solenoid valve 11 is closed, the waste gas valve 7 is opened, and the waste gas is bypassed Lead to the exhaust pipe 20 and the atmosphere.

Further, in the above-mentioned test process, by observing the pressure of the air storage tank 14, the opening and closing of the solenoid valve 11 and the waste gas valve 7 are determined. After the solenoid valve 11 is closed, a new air storage tank can be replaced to store compressed air, or the electromagnetic valve can be kept. The valve 11 is opened, and the compressed air stored and recovered in the air storage tank 11 is used as the intake air of the engine to be compressed again; the blower pressure relief valve 18, the blower intake valve 2, the waste gas valve 7, the compressor exhaust valve 10, and the solenoid valve 11 are all It is controlled by the industrial computer program and executed in the form of signal output, and the opening and closing of other valves are controlled manually.

The utility model gas storage tank and engine braking energy recovery system 17 (including the existing engine cylinder A1, piston A2, intake pipe A3, intake valve A4, exhaust valve A5, drive cam A6, exhaust pipe A9 and additional The exhaust disc valve A8, the charging valve A7 are coupled with the air storage tank A11 and the pressure gauge A10), that is, the compressed air stored and recovered by the air storage tank is used as the intake air of the engine and compressed again, which can effectively increase the braking power and recover gas energy. The engine braking energy recovery system 17 does not need to modify the engine cylinder head, but only needs to install the exhaust disc valve A8 and the gas recovery pipeline in the exhaust pipe, and the recovery pipeline is connected to the gas storage through the charging valve A7 and the pipeline tank A11. When the engine is working normally, the butterfly valve of the exhaust pipe is opened and the charging valve is closed; when the engine brakes, the controller cuts off the fuel supply and closes the butterfly valve of the exhaust pipe at the same time, and opens the charging valve at a certain point in the exhaust stroke to make the gas in the cylinder enter the storage tank. gas tank. Utilizing this technology can realize energy saving and emission reduction, so it has good application prospect and practical value.

The test bench of the utility model and the engine braking energy recovery system share one air storage tank, and there are two ways to supply air to the air storage tank: 1. Supplementing the gas storage tank through a turbocharger; 2. Through engine braking Fill the gas storage tank during work. The compressed air stored in the air storage tank has two uses: (1) as the intake air of the engine and recompressed, which can effectively increase the braking power and the recovered gas energy; (2) to provide supplementary air for the supercharger test bench. Gas, increase intake charge, improve combustion and reduce soot emissions. The utility model mainly adopts the method 1 of supplementing air and the application 1.

The utility model does not use a variable cross-section supercharger, a composite turbine and an electric auxiliary turbocharger to recycle the exhaust gas energy of the turbocharger, and directly connects an air storage tank to the self-circulation system to store and recover the compressed air. The air tank controls the mass flow rate of compressed air through a solenoid valve with adjustable opening. When the test bench runs to high-speed conditions, the solenoid valve opens, the air storage tank stores compressed air, and the speed load of the test bench rises again, and the waste gas valve opens to divert the flow Partial exhaust. The exhaust gas energy recovery device uses the blower to provide the power air source. Through the opening of the solenoid valve, the air storage tank stores compressed air to reach a certain target pressure value. Using this technology, the exhaust gas energy bypassed by the exhaust valve under high-speed and heavy-load conditions can be recovered.

The beneficial effects of the utility model are:

1. The test bench can be selected through the opening and closing of the solenoid valve, and the compressed air is used as the energy storage medium by using the air storage tank to recover the energy of the waste gas bypassed by the waste gas valve.

2. The test bench does not use the composite turbocharger test bench and the electric auxiliary turbocharger test bench to recover the exhaust gas energy of the turbocharger, and directly connects an air storage tank to the self-circulation system to store and recover compressed air , the air storage tank controls the mass flow rate of compressed air through an adjustable solenoid valve.

3. The gas storage tank of the utility model can be coupled with the engine braking energy recovery system and the air supply system, providing support for the matching development and research of the supercharger and the engine.

The technology of the utility model with waste gas energy recovery only needs one turbocharger, the blower is used to provide the power gas source, and the electromagnetic valve is selected to open and close, and the compressed air is used as the energy storage medium by the gas storage tank, and the recovery is bypassed by the waste gas valve The exhaust gas energy can be used to complete various performance tests of the turbocharger. At the same time, this technology recovers the exhaust gas energy to supply more air to the engine. It is an effective way to improve engine performance and achieve energy saving and emission reduction. , the technology is simple in structure, easy to operate, reliable in operation, and pollution-free.

Description of drawings:

Fig. 1 is a block diagram of the hardware system of the turbocharger performance test bench of the present utility model;

Fig. 2 is a block diagram of the engine braking energy recovery system;

In Fig. 1: 1. Blower; 2. Blower intake valve; 3. Muffler; 4. Check valve; 5. Combustion chamber; 6. Bellows; 7. Waste gas valve; 8. Turbocharger turbine; 9 1. Turbocharger compressor; 10. Compressor exhaust valve; 11. Solenoid valve; 12. Intercooler; 13. Check valve; 14. Gas storage tank; 15. Intercooler; 16. Check valve ;17. Engine braking energy recovery system; 18. Blower blower pressure relief valve; 19. Intake pipe; 20. Exhaust pipe; 21. Compressor intake pipe; A is the oil supply system; B is the lubrication system; are pressure sensors; T1, T2, T3 are temperature sensors; m1, m2 flowmeters;

In Figure 2: A1, cylinder; A2, piston; A3, intake pipe; A4, intake valve; A5, exhaust valve; A6, driving cam; A7, charging valve; A8, exhaust butterfly valve; A9, exhaust pipe ; A10, pressure gauge; A11, gas storage tank.

Detailed ways:

Below in conjunction with embodiment the utility model method is described in further detail. It should be noted that the protection scope of the present utility model shall include but not be limited to the technical content disclosed in this embodiment.

The purpose of the utility model is to provide a turbocharger performance test bench with exhaust gas energy recovery, the turbocharger performance test bench with exhaust gas energy recovery is simple in structure, reasonable in design, low in production cost, and the test method is easy to operate , reliable operation, can recover the waste gas energy bypassed by the waste gas valve under high-speed and heavy-load conditions, and the compressed air stored in the gas storage tank is used as the intake air of the engine for re-compression.

The utility model has a turbocharger performance test bench with waste gas energy recovery, which includes a turbocharger turbine 8 and a turbocharger compressor 9, and is characterized in that: the turbocharger turbine 8 is connected to the bellows 6, The combustion chamber 5, the first one-way valve 4, the muffler 3, the intake valve 2 and the blower 1, wherein the turbocharger turbine 8, the bellows 6, and the combustion chamber 5 are connected in parallel with the turbocharger compressed air connected in sequence Machine 9, exhaust valve 10, first intercooler 15 and second one-way valve 16, between the exhaust valve 10 and the first intercooler 15 are sequentially connected with solenoid valve 11, second intercooler 12 And the 3rd one-way valve 13 and gas storage tank 14, described gas storage tank 14 is also connected with the charging valve A7 output end that is next to on the engine exhaust pipe, is provided with exhaust disc valve on the engine exhaust pipe; Turbine The waste gas valve 7 is connected in parallel on the intake pipe 19 and the exhaust pipe 20 of the turbocharger turbine 8, and the turbocharger compressor 9, exhaust valve 10, first intercooler 15 and second one-way valve connected in sequence 16 constitutes the self-circulation system of the test bench, and the solenoid valve 11, the second intercooler 12, the third check valve 13 and the gas storage tank 14 connected in sequence constitute an exhaust gas energy recovery device.

Further, a leak valve 18 is bypassed between the blower 1 and the intake valve 2 .

Further, pressure sensors, temperature sensors and flow sensors are provided on the pipelines between the turbocharger compressor 9 and the exhaust valve 10 , and the pipelines between the turbocharger turbine 8 and the bellows 6 .

Further, a pressure sensor and a temperature sensor are provided on the intake pipe 21 of the turbocharger compressor 9 and the exhaust pipe 20 of the turbocharger turbine 8 , and a pressure gauge is connected to the gas storage tank 14 .

Further, the combustion chamber 5 is connected with an oil supply system, and the turbocharger turbine 8 and the turbocharger compressor 9 are connected with a lubricating system.

The test method of the turbocharger performance test bench with exhaust gas energy recovery of the utility model is characterized in that: the turbocharger performance test bench with exhaust gas energy recovery includes a turbocharger turbine 8 and a turbocharger compressed air The machine 9 is characterized in that: the turbocharger turbine 8 is sequentially connected to the bellows 6, the combustion chamber 5, the first check valve 4, the muffler 3, the intake valve 2 and the blower 1, wherein the turbocharger turbine 8. The bellows 6 and the combustion chamber 5 are connected in parallel with the turbocharger compressor 9, the exhaust valve 10, the first intercooler 15 and the second check valve 16, and the exhaust valve 10 and An electromagnetic valve 11, a second intercooler 12, a third one-way valve 13 and an air storage tank 14 are sequentially connected between the first intercooler 15, and the air storage tank 14 is also connected to the exhaust pipe of the engine by the side. The output end of the charging valve A7 is connected, and an exhaust disc valve is arranged on the engine exhaust pipe; the waste gas valve 7 is connected in parallel on the intake pipe 19 and the exhaust pipe 20 of the turbocharger turbine 8, and the turbocharger connected in sequence Compressor 9, exhaust valve 10, first intercooler 15 and second one-way valve 16 constitute the self-circulation system of the test bench, and the solenoid valve 11, second intercooler 12 and the third one-way valve connected in sequence 13 and air storage tank 14 constitute the waste gas energy recovery device; during work, open the blower inlet valve 2, the compressor exhaust valve 10, the electromagnetic valve 11, close the blower pressure relief valve 18, close the waste gas valve 7, open the blower 1, wait The system wind pressure and flow are stable, turn on the ignition switch of the engine, the air in the test bench pipeline flows through the combustion chamber 5, the combustion exhaust gas enters the bellows 6, enters the turbocharger turbine 8 intake pipe 19 and the turbocharger turbine 8, and accelerates The rotor of the turbocharger rotates, and exhaust gas is discharged into the atmosphere through the exhaust pipe 20; the rotation of the turbine drives the impeller of the coaxial turbocharger compressor 9 to rotate, and the compressed air enters the turbocharger compressor 9 of the self-circulation system of the test bench. The exhaust valve 10 flows into the gas storage tank 14 through the solenoid valve 11, the intercooler 12 and the intercooler 15; when the pressure of the gas storage tank 14 reaches the target value, the solenoid valve 11 is closed, the waste gas valve 7 is opened, and the waste gas is bypassed Lead to the exhaust pipe 20 and the atmosphere.

Further, in the above-mentioned test process, by observing the pressure of the air storage tank 14, the opening and closing of the solenoid valve 11 and the waste gas valve 7 are determined. After the solenoid valve 11 is closed, a new air storage tank can be replaced to store compressed air, or the electromagnetic valve can be kept. The valve 11 is opened, and the compressed air stored and recovered in the air storage tank 11 is used as the intake air of the engine to be compressed again; the blower pressure relief valve 18, the blower intake valve 2, the waste gas valve 7, the compressor exhaust valve 10, and the solenoid valve 11 are all It is controlled by the industrial computer program and executed in the form of signal output, and the opening and closing of other valves are controlled manually.

The utility model gas storage tank and engine braking energy recovery system 17 (including the existing engine cylinder A1, piston A2, intake pipe A3, intake valve A4, exhaust valve A5, drive cam A6, exhaust pipe A9 and additional The exhaust disc valve A8, the charging valve A7 are coupled with the air storage tank A11 and the pressure gauge A10), that is, the compressed air stored and recovered by the air storage tank is used as the intake air of the engine and compressed again, which can effectively increase the braking power and recover gas energy. The engine braking energy recovery system 17 does not need to modify the engine cylinder head, but only needs to install the exhaust disc valve A8 and the gas recovery pipeline in the exhaust pipe, and the recovery pipeline is connected to the gas storage through the charging valve A7 and the pipeline tank A11. When the engine is working normally, the butterfly valve of the exhaust pipe is opened and the charging valve is closed; when the engine brakes, the controller cuts off the fuel supply and closes the butterfly valve of the exhaust pipe at the same time, and opens the charging valve at a certain point in the exhaust stroke to make the gas in the cylinder enter the storage tank. gas tank. Utilizing this technology can realize energy saving and emission reduction, so it has good application prospect and practical value.

The test bench of the utility model and the engine braking energy recovery system share one air storage tank, and there are two ways to supply air to the air storage tank: 1. Supplementing the gas storage tank through a turbocharger; 2. Through engine braking Fill the gas storage tank during work. The compressed air stored in the air storage tank has two uses: (1) as the intake air of the engine and recompressed, which can effectively increase the braking power and the recovered gas energy; (2) to provide supplementary air for the supercharger test bench. Gas, increase intake charge, improve combustion, reduce soot emissions. The utility model mainly adopts the method 1 of supplementing air and the application 1.

The utility model does not use a variable cross-section supercharger, a composite turbine and an electric auxiliary turbocharger to recycle the exhaust gas energy of the turbocharger, and directly connects an air storage tank to the self-circulation system to store and recover the compressed air. The air tank controls the mass flow rate of compressed air through a solenoid valve with adjustable opening. When the test bench runs to high-speed conditions, the solenoid valve opens, the air storage tank stores compressed air, and the speed load of the test bench rises again, and the waste gas valve opens to divert the flow Partial exhaust. The exhaust gas energy recovery device uses the blower to provide the power air source. Through the opening of the solenoid valve, the air storage tank stores compressed air to reach a certain target pressure value. Using this technology, the exhaust gas energy bypassed by the exhaust valve under high-speed and heavy-load conditions can be recovered.

The beneficial effects of the utility model are:

1. The test bench can be selected through the opening and closing of the solenoid valve, and the compressed air is used as the energy storage medium by using the air storage tank to recover the energy of the waste gas bypassed by the waste gas valve.

2. The test bench does not use the composite turbocharger test bench and the electric auxiliary turbocharger test bench to recover the exhaust gas energy of the turbocharger, and directly connects an air storage tank to the self-circulation system to store and recover compressed air , the air storage tank controls the mass flow rate of compressed air through an adjustable solenoid valve.

3. The gas storage tank of the utility model can be coupled with the engine braking energy recovery system and the air supply system, providing support for the matching development and research of the supercharger and the engine.

The technology of the utility model with waste gas energy recovery only needs one turbocharger, the blower is used to provide the power gas source, and the electromagnetic valve is selected to open and close, and the compressed air is used as the energy storage medium by the gas storage tank, and the recovery is bypassed by the waste gas valve The exhaust gas energy can be used to complete various performance tests of the turbocharger. At the same time, this technology recovers the exhaust gas energy to supply more air to the engine. It is an effective way to improve engine performance and achieve energy saving and emission reduction. , the technology is simple in structure, easy to operate, reliable in operation, and pollution-free.

The inspection and test bench provided by the above-mentioned implementation cases of the utility model can not only meet the performance test and inspection of ordinary vehicle turbochargers, but also be applicable to the performance tests of variable cross-section turbochargers (VGT), which is energy-saving and environmentally friendly, and has a high degree of automation. It is suitable for experimental research in universities, scientific research institutions and enterprise product testing, with strong scalability.

The above operation process and hardware configuration are only examples of the implementation of the utility model, and are not intended to limit the utility model in any form. Any person skilled in the art can make many possible changes or modifications to the technical solution of the utility model by using the above methods and technical contents without departing from the technical solution of the utility model. Therefore, everything does not deviate from the content of the technical solution of the utility model, and the simple modifications made to the above-mentioned implementation cases according to the technical essence of the utility model still belong to the protection scope of the technical solution of the utility model.

Claims (5)

1. a kind of turbocharger performance testing stand with exhaust energy recovery, including turbocharger turbine（8）Increase with turbine Depressor compressor（9）, it is characterised in that：The turbocharger turbine（8）It is sequentially connected bellows（6）, combustion chamber（5）, One check valve（4）, muffler（3）, intake valve（2）And air blower（1）, wherein turbocharger turbine（8）, bellows（6）, combustion Burn room（5）It is parallel with the turbocharger air compressor being sequentially connected（9）, air bleeding valve（10）, the first charge air cooler（15）With Two check valves（16）, the air bleeding valve（10）With the first charge air cooler（15）Between be connected with magnetic valve in turn（11）, it is cold in second Device（12）With the 3rd check valve（13）And air accumulator（14）, the air accumulator（14）Also filling on the exhaust pipe of engine is connected on side Air valve（A7）Output end connects, and the exhaust pipe of engine is provided with exhaust dish valve；Turbocharger turbine（8）Air inlet pipe（19）With Blast pipe（20）Upper exhaust gas valve in parallel（7）, the turbocharger air compressor being sequentially connected（9）, air bleeding valve（10）, in first Cooler (15) and the second check valve (16）Form testing stand self-circulation system, the magnetic valve being sequentially connected（11）, in second Cooler（12）With the 3rd check valve（13）And air accumulator（14）Form exhaust energy retracting device.

2. the turbocharger performance testing stand according to claim 1 with exhaust energy recovery, it is characterised in that：It is described It is other between air blower (1) and intake valve (2) to be connected to gas bleeder valve (18).

3. the turbocharger performance testing stand according to claim 1 with exhaust energy recovery, it is characterised in that：It is described Between pipeline, turbocharger turbine (8) and bellows (6) between turbocharger air compressor (9) and air bleeding valve (10) Pipeline is provided with pressure sensor, temperature sensor and flow sensor.

4. the turbocharger performance testing stand according to claim 1 with exhaust energy recovery, it is characterised in that：It is described The air inlet pipe (21) of turbocharger air compressor (9) and the blast pipe (20) of turbocharger turbine (8) are provided with pressure sensing Device and temperature sensor, the air accumulator（14）On be connected with pressure gauge.

5. the turbocharger performance testing stand according to claim 1 with exhaust energy recovery, it is characterised in that：It is described Combustion chamber（5）Side is connected to oil supply system, the turbocharger turbine（8）And turbocharger air compressor（9）Side is connected to lubrication System.