CN2548138Y - IC engine characteristic low-pressure analogical test table - Google Patents
IC engine characteristic low-pressure analogical test table Download PDFInfo
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- CN2548138Y CN2548138Y CN 02203156 CN02203156U CN2548138Y CN 2548138 Y CN2548138 Y CN 2548138Y CN 02203156 CN02203156 CN 02203156 CN 02203156 U CN02203156 U CN 02203156U CN 2548138 Y CN2548138 Y CN 2548138Y
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Abstract
The utility model relates to an internal combustion engine character low pressure simulation test-bed. The device is characterized in that the device comprises an intake simulation device, an exhaust back pressure simulation device, an air back pressure simulation device in an engine crankcase and a simulation plateau environment low pressure starting device. The intake simulation device comprises an air flow meter, an intake throttle valve, and an intake stable pressure tube. The exhaust back pressure simulation device comprises an exhaust stable pressure tube, a vacuum pumping device which is connected thereof through a pipe, and an exhaust regulating pressure valve which is arranged on the pipe. The air back pressure simulation device in the engine crankcase comprises an engine crankcase and an intake and an exhaust stable pressure tubes which is connected thereof. The simulation plateau environment low pressure starting device comprises an intake stable pressure tube and an exhaust stable pressure tube which are connected through a cold starting vacuum tube. The utility model has the advantages of less investment, easiness and practicality, convenient manufacture, short installing cycle, fast effect, good simulation effect, and high accuracy, which can simulate air pressure in different altitudes.
Description
Technical field:
The utility model belongs to the simulation laboratory under artificial environment, the internal combustion engine performance low-pressure simulating test stage of the compatibility test of particularly a kind of internal combustion engine altitude environment, delivery test, development research, customs's access check etc.
Background technology:
Present existing internal combustion engine has 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 internal combustion engine simulator stand is still blank in China in the all-sealed round-the-clock artificial altitude environment 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 at plains region simulated high altitude different altitude height environment, and can carry out the internal combustion engine performance low-pressure simulating test stage of internal combustion engine performance test.
The technical solution of the utility model is: a kind of internal combustion engine performance low-pressure simulating test stage is characterized in that: be made up of atmosphere back pressure analogue means in air inlet analogue means, exhaust back pressure analogue means, the engine crankcase and simulated high altitude environment low voltage starting device; 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 air inlet tube of pressure-stabilizing and exhaust tube of pressure-stabilizing, and the two connects by the cold start-up vacuum tube.
Vacuum extractor in the above-mentioned exhaust back pressure analogue means can be a water-ring vacuum pump, also can be the jet type vacuum pump.
The volume of above-mentioned air inlet tube of pressure-stabilizing and exhaust tube of pressure-stabilizing is more than 200 times of engine displacement.
Above-mentioned engine is connected with dynamometer machine.
The utility model has the advantages that: because the principle of this testing table is that engine aspirating system, exhaust system and crankcase are transformed and sealed, utilize vacuum pump suction to realize simulation to the plateau atmospheric environment, thus its have small investment, simple and practical, convenient manufacturings, installation period weak point, instant effect, simulate effect is good, precision is high, also can simulate the atmospheric pressure of different altitude height.
Description of drawings:
Accompanying drawing is a structural representation of the present utility model
Embodiment:
As shown in the figure: a kind of internal combustion engine plateau low-pressure simulating test stage is characterized in that: be made up of atmosphere back pressure analogue means in air inlet analogue means, exhaust back pressure analogue means, the engine crankcase and simulated high altitude environment low voltage starting device; 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 is connected by connecting pipe 16 with the air inlet tube of pressure-stabilizing, intake-air throttle valve 11 is housed on the connecting pipe, and the air inlet tube of pressure-stabilizing is connected with engine 9 through exhaust-driven turbo-charger exhaust-gas turbo charger interface 8 by draft tube 17.Engine is connected with dynamometer machine 7.Air enters air inlet pressure stabilizing chamber through air flowmeter and intake-air throttle valve, enters engine by draft tube through exhaust-driven turbo-charger exhaust-gas turbo charger interface (or carburetor) again.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 is connected by gas outlet 14 and the exhaust pressure regulator valve 3 that is installed on the gas outlet; Water-ring vacuum pump is connected with a moisture trap 1.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 tube of pressure-stabilizing 10 and exhaust tube of pressure-stabilizing 4, and the two connects by cold start-up vacuum tube 6.Automatically control by solenoid valve, adjust to required air pressure by throttling valve 11 during startup and realize that the low pressure simulation starts.
Claims (4)
1, a kind of internal combustion engine performance low-pressure simulating test stage is characterized in that: be made up of atmosphere back pressure analogue means in air inlet analogue means, exhaust back pressure analogue means, the engine crankcase and simulated high altitude environment low voltage starting device; 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 air inlet tube of pressure-stabilizing and exhaust tube of pressure-stabilizing, and the two connects by the cold start-up vacuum tube.
2, internal combustion engine performance low-pressure simulating test stage according to claim 1 is characterized in that: the vacuum extractor in the above-mentioned exhaust back pressure analogue means can be a water-ring vacuum pump, also can be the jet type vacuum pump.
3, internal combustion engine performance low-pressure simulating test stage according to claim 1 is characterized in that: the volume of above-mentioned air inlet tube of pressure-stabilizing and exhaust tube of pressure-stabilizing is more than 200 times of engine displacement.
4, internal combustion engine performance low-pressure simulating test stage according to claim 1 is characterized in that: above-mentioned engine is connected with dynamometer machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02203156 CN2548138Y (en) | 2002-02-09 | 2002-02-09 | IC engine characteristic low-pressure analogical test table |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02203156 CN2548138Y (en) | 2002-02-09 | 2002-02-09 | IC engine characteristic low-pressure analogical test table |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2548138Y true CN2548138Y (en) | 2003-04-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02203156 Expired - Fee Related CN2548138Y (en) | 2002-02-09 | 2002-02-09 | IC engine characteristic low-pressure analogical test table |
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| CN (1) | CN2548138Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101788384B (en) * | 2009-12-21 | 2012-05-09 | 中国人民解放军军事交通学院 | Engine plateau environment laboratory |
| 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 |
| CN103364197A (en) * | 2012-03-30 | 2013-10-23 | 广西玉柴机器股份有限公司 | An engine low-pressure simulation testing platform |
| CN103499447A (en) * | 2013-10-09 | 2014-01-08 | 北京动力机械研究所 | Zero mach number testing device applied to turbine engine |
| CN104089780A (en) * | 2014-07-03 | 2014-10-08 | 中国航空动力机械研究所 | Air inflow pipe used for model turbine tester and model turbine tester |
| CN107664581A (en) * | 2017-08-10 | 2018-02-06 | 中国北方发动机研究所(天津) | Plateau simulated exhaust condition smoke intensity test conversion equipment |
| CN110726559A (en) * | 2019-10-22 | 2020-01-24 | 北京理工大学 | Combustion performance test bench for internal combustion engine based on rapid compression/compression expansion machine |
| CN113465929A (en) * | 2021-07-15 | 2021-10-01 | 哈尔滨工程大学 | Internal combustion engine spray combustion performance testing device based on rapid compression expander |
-
2002
- 2002-02-09 CN CN 02203156 patent/CN2548138Y/en not_active Expired - Fee Related
Cited By (10)
| 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 |
| CN101788384B (en) * | 2009-12-21 | 2012-05-09 | 中国人民解放军军事交通学院 | Engine plateau environment laboratory |
| CN103364197A (en) * | 2012-03-30 | 2013-10-23 | 广西玉柴机器股份有限公司 | An engine low-pressure simulation testing platform |
| CN103499447A (en) * | 2013-10-09 | 2014-01-08 | 北京动力机械研究所 | Zero mach number testing device applied to turbine engine |
| CN103499447B (en) * | 2013-10-09 | 2015-10-28 | 北京动力机械研究所 | For zero Mach number test unit of turbine engine |
| CN104089780A (en) * | 2014-07-03 | 2014-10-08 | 中国航空动力机械研究所 | Air inflow pipe used for model turbine tester and model turbine tester |
| CN107664581A (en) * | 2017-08-10 | 2018-02-06 | 中国北方发动机研究所(天津) | Plateau simulated exhaust condition smoke intensity test conversion equipment |
| CN110726559A (en) * | 2019-10-22 | 2020-01-24 | 北京理工大学 | Combustion performance test bench for internal combustion engine based on rapid compression/compression expansion machine |
| CN110726559B (en) * | 2019-10-22 | 2021-04-06 | 北京理工大学 | Combustion performance test bench for internal combustion engine based on rapid compression/compression expansion machine |
| CN113465929A (en) * | 2021-07-15 | 2021-10-01 | 哈尔滨工程大学 | Internal combustion engine spray combustion performance testing device based on rapid compression expander |
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| Date | Code | Title | Description |
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| 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 |