CN2687650Y - High altitude low-pressure internal combustion engine fan characteristic testing platform - Google Patents
High altitude low-pressure internal combustion engine fan characteristic testing platform Download PDFInfo
- Publication number
- CN2687650Y CN2687650Y CN 03243098 CN03243098U CN2687650Y CN 2687650 Y CN2687650 Y CN 2687650Y CN 03243098 CN03243098 CN 03243098 CN 03243098 U CN03243098 U CN 03243098U CN 2687650 Y CN2687650 Y CN 2687650Y
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- pressure
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- air
- stabilizing
- simulator
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Abstract
The utility model provides a high altitude low-pressure internal combustion engine fan characteristic testing platform, comprising an air intake simulator, an air-exhaust back-pressure simulator, an atmosphere back-pressure simulator in an engine crankcase, a low-pressure starter for simulating altitude environment and a water boiling point simulator for the altitude environment. The air intake simulator comprises an air flow meter, an air intake throttling valve and an air intake pressure stabilizing barrel. The air-exhaust back-pressure simulator comprises an air-exhaust pressure stabilizing barrel, a vacuum extractor and an air-exhaust pressure regulating valve. The atmosphere back-pressure simulator in an engine crankcase comprises an engine crankcase and an air intake and exhaust pressure stabilizing barrel. The low-pressure starter for simulating altitude environment comprises an air intake pressure stabilizing tube and an air-exhaust pressure stabilizing tube. The water boiling point simulator for the altitude environment is composed of an expanding water tank, an air-exhaust pressure stabilizing barrel and a water tank which is opposite to a fan on the engine crankcase. The design has the advantages of small investment, simplicity and practicality, good simulating effect and high precision, can simulate the atmospheric pressure of different altitudes, and can conduct the characteristic test of the fan clutch of the internal combustion engine.
Description
Affiliated field:
The utility model belongs to the simulation laboratory under artificial environment, particularly a kind of high altitude low air pressure internal combustion engine fan duty testing table, and it can carry out compatibility test, delivery test, development research, customs's access check etc. under altitude environment.
Background technology:
Present existing internal combustion engine and annex thereof have tangible influence with change of elevation to the characteristic of engine under the altitude environment condition.With the non-supercharged engine is example: 1000 meters of the every risings of height above sea level, and engine capacity just descends 13%, and it is about 10% that specific fuel consumption rises, and it is about 12% that smoke intensity increases, and also brings problems such as cold starting performance deterioration simultaneously.In order to solve this difficult problem, the employing exhaust turbine pressuring technology that has improves the air inlet coefficient, reaches the purpose of recovering power.The employing high-power that has draws the method for dolly to address this problem, but this method worsens economy and venting quality more.For difference and the reason, design of exploratory development engine between the various performance index in plateau and plains region adjusted matching relationship, just need the lot of data analysis and research, if site test is subjected to the influence of geographical and natural climate very big, just be difficult to set up the physical parameter and the test condition of Pass Test requirement, by contrast, in the laboratory, carry out simulation test, then than being easier to overcome above-mentioned difficulties.But the round-the-clock artificial altitude environment internal combustion engine simulator stand of totally enclosed type is almost still blank in China at present, also has only the U.S. and Japan that all-sealed testing laboratory is arranged abroad, but costs an arm and a leg.
Summary of the invention:
The purpose of this utility model just is to overcome above-mentioned the deficiencies in the prior art, but and provide a kind of, and can carry out the internal combustion engine fan duty low-pressure simulating test stage of internal combustion engine fan clutch attribute testing at plains region simulated high altitude different altitude height environment.
The technical solution of the utility model is: a kind of high altitude low air pressure internal combustion engine fan duty testing table comprises atmosphere back pressure analogue means and simulated high altitude environment low voltage starting device in air inlet analogue means, exhaust back pressure analogue means, the engine crankcase; The air inlet analogue means is made up of air flowmeter, intake-air throttle valve and air inlet tube of pressure-stabilizing, air flowmeter is connected by connecting pipe with the air inlet tube of pressure-stabilizing, intake-air throttle valve is housed on the connecting pipe, and the air inlet tube of pressure-stabilizing is connected with engine through the exhaust-driven turbo-charger exhaust-gas turbo charger interface by draft tube; The exhaust back pressure analogue means is by the exhaust tube of pressure-stabilizing, form with its vacuum extractor that is connected by pipeline and the exhaust pressure regulator valve that is installed on the pipeline; Atmosphere back pressure analogue means is made up of engine crankcase and the inlet and outlet tube of pressure-stabilizing that is attached thereto in the engine crankcase; Simulated high altitude environment low voltage starting device is made up of interconnective air inlet stabilivolt and exhaust stabilivolt; It is characterized in that: increase the altitude environment water boiling point analogue means of being made up of expansion tank and exhaust tube of pressure-stabilizing, expansion tank is connected with the exhaust tube of pressure-stabilizing, and expansion tank communicates with water tank; Water tank is relative with fan on the engine crankcase.
The utility model has the advantages that: because the principle of this testing table is that engine aspirating system, two exhaust system, water tank and crankcase are transformed and sealed, utilize the simulation of vacuum pump suction realization to the plateau atmospheric environment, therefore it has small investment, simple and practical, convenient manufacturing, installation period weak point, instant effect, simulate effect is good, precision is high, also can simulate the atmospheric pressure of different altitude height, and can carry out the attribute testing of internal combustion engine fan clutch.
Description of drawings:
Accompanying drawing is a structural representation of the present utility model.
Embodiment:
As shown in the figure: a kind of high altitude low air pressure internal combustion engine fan duty testing table is characterized in that: be made up of atmosphere back pressure analogue means in air inlet analogue means, exhaust back pressure analogue means, engine crankcase and the water tank; The air inlet analogue means is made up of air flowmeter 12, intake-air throttle valve 11 and air inlet tube of pressure-stabilizing 10, air flowmeter and air inlet tube of pressure-stabilizing link by connecting pipe 16, intake-air throttle valve 11 is housed on the connecting pipe, and the air inlet tube of pressure-stabilizing enters engine 9 by draft tube 17 through exhaust-driven turbo-charger exhaust-gas turbo charger interface 8 (or carburetors).Engine is connected with dynamometer machine 7.When engine operation, in tube of pressure-stabilizing, produce vacuum tightness by the throttling action of throttling valve, the aperture that changes throttling valve is with regard to the admission pressure in the scalable tube of pressure-stabilizing, with the atmospheric pressure of simulation different altitude height.In order to guarantee the degree of accuracy of measurement data, whole gas handling system, exhaust system and crankcase must strict seal.The volume of air inlet tube of pressure-stabilizing is generally more than 200 times of engine displacement, thereby guarantees that admission pressure is not subjected to the influence of engine charge air-flow ripple.
The exhaust back pressure analogue means is by exhaust tube of pressure-stabilizing 4, form with its water-ring vacuum pump 2 that links by gas outlet 14 and the exhaust pressure regulator valve 3 that is installed on the gas outlet; A water-ring vacuum pump and a moisture trap 1 link.This device is regulated the vacuum tightness size by pressure regulator valve, thus with the vacuum degree control of exhaust tube of pressure-stabilizing in the scope of required simulation.
Atmosphere back pressure analogue means is made up of engine crankcase and the inlet and outlet tube of pressure-stabilizing 10,4 that is attached thereto in the engine crankcase 13; Engine crankcase 13 is connected with exhaust tube of pressure-stabilizing 4 by heat exchanger 5, is connected with the air inlet tube of pressure-stabilizing by draft tube 17.This device makes the pressure in the crankcase identical with the pressure of inlet and outlet tube of pressure-stabilizing.Simulated high altitude environment low voltage starting device is made up of air inlet stabilivolt that is connected by connecting pipe 6 and exhaust stabilivolt;
Altitude environment water boiling point analogue means is made up of expansion tank 18 and exhaust tube of pressure-stabilizing 4, and the two connects by connecting pipe 15, and expansion tank communicates with water tank 20; Water tank is relative with fan 19 on the engine crankcase.This device can be simulated the boiling point of different altitude height water by simulation different altitude height atmospheric pressure.
Claims (1)
1, a kind of high altitude low air pressure internal combustion engine fan duty testing table comprises atmosphere back pressure analogue means and simulated high altitude environment low voltage starting device in air inlet analogue means, exhaust back pressure analogue means, the engine crankcase; The air inlet analogue means is made up of air flowmeter, intake-air throttle valve and air inlet tube of pressure-stabilizing, air flowmeter is connected by connecting pipe with the air inlet tube of pressure-stabilizing, intake-air throttle valve is housed on the connecting pipe, and the air inlet tube of pressure-stabilizing is connected with engine through the exhaust-driven turbo-charger exhaust-gas turbo charger interface by draft tube; The exhaust back pressure analogue means is by the exhaust tube of pressure-stabilizing, form with its vacuum extractor that is connected by pipeline and the exhaust pressure regulator valve that is installed on the pipeline; Atmosphere back pressure analogue means is made up of engine crankcase and the inlet and outlet tube of pressure-stabilizing that is attached thereto in the engine crankcase; Simulated high altitude environment low voltage starting device is made up of interconnective air inlet stabilivolt and exhaust stabilivolt; It is characterized in that: increase the altitude environment water boiling point analogue means of being made up of expansion tank and exhaust tube of pressure-stabilizing, expansion tank is connected with the exhaust tube of pressure-stabilizing, and expansion tank communicates with water tank; Water tank is relative with fan on the engine crankcase.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03243098 CN2687650Y (en) | 2003-04-04 | 2003-04-04 | High altitude low-pressure internal combustion engine fan characteristic testing platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03243098 CN2687650Y (en) | 2003-04-04 | 2003-04-04 | High altitude low-pressure internal combustion engine fan characteristic testing platform |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2687650Y true CN2687650Y (en) | 2005-03-23 |
Family
ID=34661015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03243098 Expired - Fee Related CN2687650Y (en) | 2003-04-04 | 2003-04-04 | High altitude low-pressure internal combustion engine fan characteristic testing platform |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2687650Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101718636B (en) * | 2009-12-11 | 2012-11-21 | 北京航空航天大学 | Full-height fan flow rate-pressure rise test device and test method |
| CN106525283A (en) * | 2016-12-09 | 2017-03-22 | 中国船舶重工集团公司第七研究所 | Test device for switch valve |
| 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 |
-
2003
- 2003-04-04 CN CN 03243098 patent/CN2687650Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101718636B (en) * | 2009-12-11 | 2012-11-21 | 北京航空航天大学 | Full-height fan flow rate-pressure rise test device and test method |
| CN106525283A (en) * | 2016-12-09 | 2017-03-22 | 中国船舶重工集团公司第七研究所 | Test device for switch valve |
| CN106525283B (en) * | 2016-12-09 | 2023-12-22 | 中国船舶集团有限公司第七一一研究所 | Test device of switch valve |
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |