CN203310632U - Device for simulating engine boost system - Google Patents
Device for simulating engine boost system Download PDFInfo
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- CN203310632U CN203310632U CN2013203022395U CN201320302239U CN203310632U CN 203310632 U CN203310632 U CN 203310632U CN 2013203022395 U CN2013203022395 U CN 2013203022395U CN 201320302239 U CN201320302239 U CN 201320302239U CN 203310632 U CN203310632 U CN 203310632U
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- buffer tank
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- Exhaust-Gas Circulating Devices (AREA)
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Abstract
The utility model discloses a device for simulating an engine boost system, aiming at solving the problem of simulating the operation conditions of the boost system in the test of an engine. The device comprises an air compressor, a primary buffer tank, a primary boost pressure control valve, a refrigeration drying machine, a filter, an air heater and temperature control cabinet, a secondary boost pressure control valve, a secondary buffer tank, a throttle, a safety valve and an electromagnetic decompression valve which are arranged in a simulation air inlet pipeline of the engine, and comprises an air exhaust buffer tank and an air exhaust backpressure valve which are arranged in a simulation air exhaust pipeline of the engine. The device is characterized by further comprising an EGR control mechanism, wherein one end of the EGR control mechanism is communicated with the air exhaust buffer tank, and the other end of the EGR control mechanism is connected to the rear side of the throttle of the air inlet pipeline. The device provided by the utility model is suitable to be used for real-time adjustment and control of the air inlet parameters and air exhaust back pressure of various types of engines, and can precisely simulate the operation characteristics of the engine EGR system, making full use of the temperature adjusting function of the refrigeration drying machine, and reducing the cost of the research of the engine.
Description
Technical field
The utility model relates to a kind of engine test analogue means, and especially a kind of pressurization system simulator that is applicable to engine test, belong to the Engine Block Test technical field.
Background technology
Enhancing along with automobile industry development and mankind's environmental protection and energy saving consciousness, the relevant automobile emission regulation increasingly stringent in countries in the world, engine booster and EGR (EGR) application technology becomes the important topic of Research & Development of Automobile, the attention rate of people's combustion motor theoretical research also improves constantly, and has strengthened simultaneously the investment of testing equipment.Domestic Scientific Research unit and automobile production enterprise all have been equipped with the engine supercharging system analogue means in engine performance measuring equipment at present.
As shown in Figure 1, existing engine supercharging system analogue means provides pressurized air by air compressor 1, utilize 2 pairs of pressurized air of freezing type drier to carry out cooling, its temperature is reduced to below test demand temperature, pressurized air is after one-level buffer tank 4 carries out voltage stabilizing, by one-level supercharging pressure control valve 3, regulate its pressure again, then through filtrator 5, enter air heater and temperature-controlling cabinet 6, intake air temperature is adjusted into temperature required, then after by two-stage supercharging pressure control valve 7, regulating admission pressure, through secondary buffer tank 8, air throttle 9, safety valve 10 enters the air intake duct of engine 11, existing engine supercharging system analogue means is provided with exhaust buffer tank 12 and exhaust backpressure valve 13 in the exhaust system of engine 11, to eliminate the discharge pressure fluctuation, stablize exhaust back pressure, existing engine supercharging system analogue means arranges in air inlet pipeline electromagnetic relief valve 14, for after off-test, releasing the system internal pressure, is realized dismounting.
Existing engine supercharging system analogue means generally can only be controlled the parameters such as intake air temperature, pressure and exhaust back pressure of a certain specific engines type, owing to lacking the EGR analog control system, be difficult to the service condition of the standby egr system engine with supercharger of accurate analog ligand; In addition, in existing supercharging analogue means (as shown in Figure 1), freezing type drier 2 is arranged in the front of one-level supercharging pressure control valve 3 and one-level buffer tank 4, can not effectively utilize the temp regulating function of freezing type drier 2, has wasting of resources phenomenon.
The utility model content
The purpose of this utility model is the drawback for prior art, and a kind of engine supercharging system analogue means that can regulate in real time control, accurate simulated engine egr system operation characteristic to various engines type inlet condition and exhaust back pressure thereof, take full advantage of the freezing type drier temp regulating function is provided.
Problem described in the utility model realizes with following technical proposals:
A kind of engine supercharging system analogue means, it arranges air compressor on the simulation air inlet pipeline of engine, the one-level buffer tank, the one-level supercharging pressure control valve, freezing type drier, filtrator, air heater and temperature-controlling cabinet, the two-stage supercharging pressure control valve, the secondary buffer tank, air throttle, safety valve and electromagnetic relief valve, on the simulated exhaust pipeline of engine, exhaust buffer tank and exhaust backpressure valve are set, its special feature is: it also is provided with the EGR control gear, described EGR control gear one end is communicated with the exhaust buffer tank, the other end is connected to the air throttle back of air inlet pipeline.
Above-mentioned engine supercharging system analogue means, described EGR control gear comprises one-level EGR cooling unit, secondary EGR cooling unit and EGR flowrate control valve, described one-level EGR cooling unit and secondary EGR cooling unit are connected in series, and described EGR flowrate control valve is arranged in the back of secondary EGR cooling unit.
Above-mentioned engine supercharging system analogue means, described freezing type drier are arranged in one-level buffer tank and the one-level supercharging pressure control valve back of the simulation air inlet pipeline of engine.
Above-mentioned engine supercharging system analogue means, on the simulation air inlet pipeline of engine, also be provided with the first thermal mass flow meter and the second thermal mass flow meter, described the first thermal mass flow meter is arranged between air throttle and EGR flowrate control valve, and described the second thermal mass flow meter is arranged between EGR flowrate control valve and safety valve.
Above-mentioned engine supercharging system analogue means, the simulation air inlet pipeline terminal of described engine is provided with the charge air flow operation valve, and two-stage supercharging pressure feedback point and intake air temperature feedback point are set at the engine intake place.
Above-mentioned engine supercharging system analogue means, also be provided with one-level boost pressure feedback point on the simulation air inlet pipeline of engine, described one-level boost pressure feedback point is positioned at the front of air heater and temperature-controlling cabinet.
Above-mentioned engine supercharging system analogue means, arrange exhaust back pressure pressure feedback point in the exhaust ports of engine.
The utility model can be regulated by the EGR control gear flow and the temperature of EGR gas, by the first thermal mass flow meter, measured the charge flow rate α that does not comprise EGR, by the second thermal mass flow meter measurement, comprised the charge flow rate β of EGR, (β-α)/β calculates EGR ratio in air inlet to utilize relational expression again; The utility model is provided with the charge air flow operation valve before engine intake, and intake air temperature feedback point, two-stage supercharging pressure feedback point are directly arranged in to the engine intake place, make to simulate intake air temperature, pressure and airflow pattern closer to the real engine operating mode; The utility model is arranged in freezing type drier one-level buffer tank and the one-level supercharging pressure control valve back of the simulation air inlet pipeline of engine, has effectively utilized the temp regulating function of freezing type drier, has avoided wasting of resources phenomenon.In a word, the utility model is applicable to the real-time adjusting of various engines type inlet condition and exhaust back pressure thereof and controls, accurately simulated engine egr system operation characteristic, take full advantage of the freezing type drier temp regulating function, thereby reduced the R&D costs of engine.
The accompanying drawing explanation
The utility model is described in further detail below in conjunction with accompanying drawing.
Fig. 1 is that existing engine supercharging system analogue means forms structural representation;
Fig. 2 is composition structural representation of the present utility model.
In figure, each list of reference numerals is: 1, air compressor, 2, freezing type drier, 3, the one-level supercharging pressure control valve, 3-1, one-level boost pressure feedback point, 4, the one-level buffer tank, 5, filtrator, 6, air heater and temperature-controlling cabinet, 6-1, the intake air temperature feedback point, 7, the two-stage supercharging pressure control valve, 7-1, two-stage supercharging pressure feedback point, 8, the secondary buffer tank, 9, air throttle, 10, safety valve, 11, engine, 12, the exhaust buffer tank, 13, exhaust backpressure valve, 13-1, exhaust back pressure pressure feedback point, 14, electromagnetic relief valve, 15, one-level EGR cooling unit, 16, secondary EGR cooling unit, 17, the first thermal mass flow meter, 18, the EGR flowrate control valve, 19, the second thermal mass flow meter, 20, the charge air flow operation valve.
Embodiment
Referring to Fig. 2, the utility model is the engine supercharging system analogue means for engine test, it arranges air compressor 1 on the simulation air inlet pipeline of engine, one-level buffer tank 4, one-level supercharging pressure control valve 3, freezing type drier 2, filtrator 5, air heater and temperature-controlling cabinet 6, two-stage supercharging pressure control valve 7, secondary buffer tank 8, air throttle 9, safety valve 10 and electromagnetic relief valve 14, exhaust buffer tank 12 and exhaust backpressure valve 13 are set on the simulated exhaust pipeline of engine, its special feature is: it also is provided with the EGR control gear, described EGR control gear comprises one-level EGR cooling unit 15, secondary EGR cooling unit 16 and EGR flowrate control valve 18, described one-level EGR cooling unit 15 1 ends are communicated with exhaust buffer tank 12, the other end is connected with secondary EGR cooling unit 16, described EGR flowrate control valve 18 1 ends are connected with secondary EGR cooling unit 16, the other end is connected to the back of air throttle 9 and the first thermal mass flow meter 17.
The utility model provides compressed air gas source by air compressor 1, and pressurized air is outputed in one-level buffer tank 4 and carries out voltage stabilizing, guarantees the pressurized air of stable output pressure; Pressurized air after voltage stabilizing flows through one-level supercharging pressure control valve 3, one-level supercharging pressure control valve 3 can arrange force value (a little higher than actual demand desired value of this force value) for the actual condition demand of engine, before the utility model was placed on air heater and temperature-controlling cabinet 6 by one-level boost pressure feedback point 3-1, one-level supercharging pressure control valve 3 received after the feedback superchargings force value information and carries out the adjusting of compressed air pressure; Pressurized air enters freezing type drier 2 subsequently, and it is cooling that freezing type drier 2 is responsible for the heat that air compressing is produced, and temperature is reduced to below test demand temperature; Cooled pressure gas, by filtrator 5, filters the materials such as oil gas, water and dust; Pressurized air enters air heater and temperature-controlling cabinet 6 subsequently, air heater and temperature-controlling cabinet 6 are adjusted into intake air temperature temperature required, air heater and temperature-controlling cabinet 6 can feedback regulation gas temperature values, intake air temperature feedback point 6-1 is placed on to the air intake opening place of engine 11, also can guarantees that Engine Inlet Temperature is accurate even in air inlet, mixed like this EGR waste gas; Gas after heating can produce certain pressure to be changed, and at this moment by two-stage supercharging pressure control valve 7 fine adjustment admission pressures, two-stage supercharging pressure feedback point 7-1 is positioned at for the engine intake place, guarantees that engine charge pressure is accurate; Gas after accurate adjustment enters into secondary buffer tank 8, by the 8 filtering pressure surges of secondary buffer tank, steady pressure; By the charge flow rate α that does not comprise EGR that the first thermal mass flow meter 17 is measured, the aperture of adjusting joint valve 9, thus control charge flow rate; In engine operation process, when the engine appearance was abnormal, safety valve 10 can cut out rapidly, cuts off source of the gas, the security of warranty test; If subjects is diesel motor, pressurized air imports engine after by charge air flow operation valve 20, forming intake swirl, if subjects is petrol engine, pressurized air forms after stream is rolled in air inlet and imports engine by charge air flow operation valve 20; After engine 11 actings, waste gas enters exhaust buffer tank 12, the 12 filtering pressure surges of exhaust buffer tank, stablize exhaust back pressure, exhaust backpressure valve 13 is connected with exhaust buffer tank 12, regulate exhaust back pressure, regulative mode is feedback regulation, and exhaust back pressure pressure feedback point 13-1 is positioned at the exhaust ports of engine 11; In exhaust buffer tank 12, the part of waste gas is by one-level EGR cooling unit 15, secondary EGR cooling unit 16 cooling EGR gases, by the second thermal mass flow meter 19, measure the charge flow rate β that comprises EGR, (β-α)/β calculates EGR ratio in air inlet to utilize relational expression; By EGR flowrate control valve 18, adjust the EGR flow again, guarantee the accuracy of EGR ratio in air inlet; After off-test, by electromagnetic relief valve 14, release the system internal pressure, realize dismounting.
Claims (7)
1. engine supercharging system analogue means, it arranges air compressor (1) on the simulation air inlet pipeline of engine, one-level buffer tank (4), one-level supercharging pressure control valve (3), freezing type drier (2), filtrator (5), air heater and temperature-controlling cabinet (6), two-stage supercharging pressure control valve (7), secondary buffer tank (8), air throttle (9), safety valve (10) and electromagnetic relief valve (14), exhaust buffer tank (12) and exhaust backpressure valve (13) are set on the simulated exhaust pipeline of engine, it is characterized in that, it also is provided with the EGR control gear, described EGR control gear one end is communicated with exhaust buffer tank (12), the other end is connected to the back of air throttle (9).
2. a kind of engine supercharging system analogue means according to claim 1, it is characterized in that, described EGR control gear comprises one-level EGR cooling unit (15), secondary EGR cooling unit (16) and EGR flowrate control valve (18), described one-level EGR cooling unit (15) is connected in series with secondary EGR cooling unit (16), and described EGR flowrate control valve (18) is arranged in the back of secondary EGR cooling unit (16).
3. a kind of engine supercharging system analogue means according to claim 2, is characterized in that, described freezing type drier (2) is arranged in one-level buffer tank (4) and one-level supercharging pressure control valve (3) back of the simulation air inlet pipeline of engine.
4. a kind of engine supercharging system analogue means according to claim 3, it is characterized in that, on the simulation air inlet pipeline of engine, also be provided with the first thermal mass flow meter (17) and the second thermal mass flow meter (19), described the first thermal mass flow meter (17) is arranged between air throttle (9) and EGR flowrate control valve (18), and described the second thermal mass flow meter (19) is arranged between EGR rate of discharge operation valve (18) and safety valve (10).
5. a kind of engine supercharging system analogue means according to claim 4, it is characterized in that, the simulation air inlet pipeline terminal of described engine is provided with charge air flow operation valve (20), and two-stage supercharging pressure feedback point (7-1) and intake air temperature feedback point (6-1) are set at the engine intake place.
6. a kind of engine supercharging system analogue means according to claim 5, it is characterized in that, on the simulation air inlet pipeline of engine, also be provided with one-level boost pressure feedback point (3-1), described one-level boost pressure feedback point (3-1) is positioned at the front of air heater and temperature-controlling cabinet (6).
7. a kind of engine supercharging system analogue means according to claim 6, is characterized in that, in the exhaust ports of engine, exhaust back pressure pressure feedback point (13-1) is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203022395U CN203310632U (en) | 2013-05-29 | 2013-05-29 | Device for simulating engine boost system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203022395U CN203310632U (en) | 2013-05-29 | 2013-05-29 | Device for simulating engine boost system |
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| CN203310632U true CN203310632U (en) | 2013-11-27 |
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| CN2013203022395U Expired - Fee Related CN203310632U (en) | 2013-05-29 | 2013-05-29 | Device for simulating engine boost system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103808516A (en) * | 2014-01-27 | 2014-05-21 | 中国北方发动机研究所(天津) | Simulated supercharged air intake system |
| CN111024331A (en) * | 2019-12-31 | 2020-04-17 | 广西玉柴机器股份有限公司 | Device and method for simulating different EGR leakage amounts |
| CN113418714A (en) * | 2021-06-18 | 2021-09-21 | 中国北方发动机研究所(天津) | Diesel engine crankcase and lubricating oil temperature control circulation integrated plateau air pressure simulation device |
| CN113654807A (en) * | 2021-07-15 | 2021-11-16 | 哈尔滨工程大学 | Engine simulation test device capable of realizing ultrahigh compression temperature and pressure |
| CN115370512A (en) * | 2022-08-31 | 2022-11-22 | 山东交通学院 | External air pressure regulating system for internal combustion engine experiment |
-
2013
- 2013-05-29 CN CN2013203022395U patent/CN203310632U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103808516A (en) * | 2014-01-27 | 2014-05-21 | 中国北方发动机研究所(天津) | Simulated supercharged air intake system |
| CN111024331A (en) * | 2019-12-31 | 2020-04-17 | 广西玉柴机器股份有限公司 | Device and method for simulating different EGR leakage amounts |
| CN111024331B (en) * | 2019-12-31 | 2022-03-22 | 广西玉柴机器股份有限公司 | Method for simulating different EGR leakage amounts |
| CN113418714A (en) * | 2021-06-18 | 2021-09-21 | 中国北方发动机研究所(天津) | Diesel engine crankcase and lubricating oil temperature control circulation integrated plateau air pressure simulation device |
| CN113418714B (en) * | 2021-06-18 | 2022-07-22 | 中国北方发动机研究所(天津) | Diesel engine crankcase and lubricating oil temperature control circulation integrated plateau air pressure simulation device |
| CN113654807A (en) * | 2021-07-15 | 2021-11-16 | 哈尔滨工程大学 | Engine simulation test device capable of realizing ultrahigh compression temperature and pressure |
| CN113654807B (en) * | 2021-07-15 | 2022-05-10 | 哈尔滨工程大学 | Engine simulation test device capable of realizing ultrahigh compression temperature and pressure |
| CN115370512A (en) * | 2022-08-31 | 2022-11-22 | 山东交通学院 | External air pressure regulating system for internal combustion engine experiment |
| CN115370512B (en) * | 2022-08-31 | 2023-08-08 | 山东交通学院 | External air pressure intensity adjusting system for internal combustion engine experiment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131127 Termination date: 20210529 |
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| CF01 | Termination of patent right due to non-payment of annual fee |