CN105372073A - High-pressure tumble air intake testing device for engine - Google Patents
High-pressure tumble air intake testing device for engine Download PDFInfo
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- CN105372073A CN105372073A CN201510988169.7A CN201510988169A CN105372073A CN 105372073 A CN105372073 A CN 105372073A CN 201510988169 A CN201510988169 A CN 201510988169A CN 105372073 A CN105372073 A CN 105372073A
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- pressurizer tank
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/04—Testing internal-combustion engines
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- Combustion & Propulsion (AREA)
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- General Physics & Mathematics (AREA)
- Testing Of Engines (AREA)
Abstract
The invention relates to a high-pressure tumble air intake testing device for an engine. The high-pressure tumble air intake testing device comprises an air compressor 1, a first pressure stabilizing box 2, an inlet pressure regulating valve 3, a flowmeter 4, a second pressure stabilizing box 5, an air duct pressure sensor 6, a lift sensor 7, an air valve lift adjusting mechanism 8, a to-be-measured cylinder cover 9, an in-cylinder pressure sensor 10, a simulation cylinder 11, a blade anemometer 12, a third pressure stabilizing box 13, a fourth pressure stabilizing box 14 and an outlet pressure regulating valve 15, and the high-pressure tumble air intake testing device for the engine can be used for performing testing research on change rules and influence factors of tumble and flow capacity of a gasoline engine air intake duct under high air intake pressure. The invention further relates to a high-pressure tumble air intake testing method for the engine.
Description
Technical field
The invention belongs to technical field of engines, be specifically related to a kind of engine high pressure and roll and flow to gas test unit.
Background technology
Internal combustion engine In Cylinder Flow has conclusive impact to the formation of combination gas and combustion process, directly affects the dynamic property of internal combustion engine, economy and other characteristics.And In Cylinder Flow affects by air flue flowing property to a great extent.Therefore Design of Inlet is very important.
Human bronchial epithelial cells device is the test unit of current industrial the most frequently used comprehensive evaluation inlet duct flow dynamic characteristic.Existing steady flow air flue test device, forms primarily of air pump, vacuum breaker, pressurizer tank, simulation cylinder sleeve, ededy current gauge and flowmeter.Measure to adopt and determine pressure differential method, admission pressure is atmospheric pressure, and keep airway pressure to reduce to a steady state value, maximum differential pressure can only reach 6kPa.And adopt paddle wheel anemometer to measure eddy current.
The evolution of gasoline engine is to supercharging by natural aspiration, the experiment condition that naturally aspirated rolls stream experiment table is consistent with naturally aspirated petrol engine air admission, along with the application of supercharging technology on gasoline engine, experiment condition and the gasoline engine time of day gap of air flue strengthen.And the pressurization of gasoline engine is at the future development constantly to high pressure-charging, experiment condition and the gasoline engine time of day gap of air flue can be increasing.In order to obtain the airway parameters consistent with true air-suction state, need Tumble and swirl and the circulation coefficient of studying high pressure admission state downtake by experiment.
Therefore, be necessary to test under high pressure admission condition, study Changing Pattern and influence factor that dissimilar air intake duct rolls stream and negotiability under high admission pressure.
Summary of the invention
The present invention is directed to petrol engine air admission that prior art exists and roll the problem that stream is difficult to measure, provide a kind of engine high pressure adapting to the compressed air induction system of gasoline engine and roll and flow to gas test unit.
Technical scheme of the present invention is: stream test unit is rolled in a kind of engine high pressure air inlet, comprise pneumatic plant 1, first pressurizer tank 2, import pressure regulator valve 3, flowmeter 4, second pressurizer tank 5, airway pressure sensor 6, lift range sensor 7, valve stroke adjusting mechanism 8, cylinder cap 9 to be measured, in-cylinder pressure sensor 10, simulation cylinder 11, paddle wheel anemometer 12, 3rd pressurizer tank 13, 4th pressurizer tank 14, outlet pressure regulator valve 15, it is characterized in that: cylinder cap 9 to be measured is arranged on simulation cylinder 11, valve stroke adjusting mechanism 8 is arranged on cylinder cap 9 to be measured, before the airintake direction of cylinder cap 9 to be measured, there is pipeline to connect the second pressurizer tank 5, pipeline between cylinder cap 9 to be measured and the second pressurizer tank 5 is provided with airway pressure sensor 6, before the airintake direction of the second pressurizer tank 5, there is pipeline to connect the first pressurizer tank 2, pipeline between the first pressurizer tank 2 and the second pressurizer tank 5 is provided with import pressure regulator valve 3 and flowmeter 4, before the airintake direction of the first pressurizer tank 2, pneumatic plant 1 is installed, simulation cylinder 11 is connected with the 3rd pressurizer tank 13,3rd pressurizer tank 13 is connected with the 4th pressurizer tank 14,4th pressurizer tank 14 is communicated with air by outlet pressure regulator valve 15, in simulation cylinder 11, in-cylinder pressure sensor 10 is installed, in simulation cylinder 11, the paddle wheel anemometer 12 measured and roll circulation speed is installed.
Beneficial effect of the present invention: the present invention by increasing high-pressure compressor and pressurizer tank before cylinder cap air intake duct, improve admission pressure, the highest admission pressure can reach 500kPa, intake pressure difference can reach 200kPa, reach the air-suction state identical with supercharging gasoline engine, thus can effectively test, at high pressure, at a high speed, and under high valve average Mach number, rolling of gasoline engine of real simulation test can flow to gas.The advantages such as it has structure simply simultaneously, convenient for installation and maintenance and can further expand.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention:
1 pneumatic plant, 2 first pressurizer tanks, 3 import pressure regulator valves, 4 flowmeters, 5 second pressurizer tanks, 6 airway pressure sensors, 7 lift range sensors, 8 valve stroke adjusting mechanisms, 9 cylinder caps to be measured, 10 in-cylinder pressure sensors, 11 simulation cylinders, 12 paddle wheel anemometers, 13 the 3rd pressurizer tanks, 14 the 4th pressurizer tanks, 15 outlet pressure regulator valves;
Fig. 2 is the structural representation of the 3rd pressurizer tank:
141 expansion segments, 142 interludes, 143 contraction sections;
Fig. 3 is the structural representation of the second pressurizer tank:
51 are divided into front expansion segment, 52 rear steady flow segments.
Embodiment
1 pair of the specific embodiment of the present invention is described in detail by reference to the accompanying drawings:
Stream test unit is rolled in a kind of engine high pressure air inlet, comprise pneumatic plant 1, first pressurizer tank 2, import pressure regulator valve 3, flowmeter 4, second pressurizer tank 5, airway pressure sensor 6, lift range sensor 7, valve stroke adjusting mechanism 8, cylinder cap 9 to be measured, in-cylinder pressure sensor 10, simulation cylinder 11, paddle wheel anemometer 12, 3rd pressurizer tank 13, 4th pressurizer tank 14, outlet pressure regulator valve 15, it is characterized in that: cylinder cap 9 to be measured is arranged on simulation cylinder 11, valve stroke adjusting mechanism 8 is arranged on cylinder cap 9 to be measured, before the airintake direction of cylinder cap 9 to be measured, there is pipeline to connect the second pressurizer tank 5, pipeline between cylinder cap 9 to be measured and the second pressurizer tank 5 is provided with airway pressure sensor 6, before the airintake direction of the second pressurizer tank 5, there is pipeline to connect the first pressurizer tank 2, pipeline between the first pressurizer tank 2 and the second pressurizer tank 5 is provided with import pressure regulator valve 3 and flowmeter 4, before the airintake direction of the first pressurizer tank 2, pneumatic plant 1 is installed, simulation cylinder 11 is connected with the 3rd pressurizer tank 13,3rd pressurizer tank 13 is connected with the 4th pressurizer tank 14,4th pressurizer tank 14 is communicated with air by outlet pressure regulator valve 15, in simulation cylinder 11, in-cylinder pressure sensor 10 is installed, in simulation cylinder 11, the paddle wheel anemometer 12 measured and roll circulation speed is installed.
Air flows into test unit by pneumatic plant 1, enters simulation cylinder 11, by being discharged to air after the 4th pressurizer tank 14.
Admission pressure can be improved by pneumatic plant 1, pressure before air intake duct can be regulated by import pressure regulator valve 3, pressure before air intake duct is measured by airway pressure sensor 6, the pressure in simulation cylinder 11 can be regulated by outlet pressure regulator valve 15, can pressure in measure analog cylinder 11 by in-cylinder pressure sensor 10.
Pressure before and after the air intake duct being controlled cylinder cap 9 to be measured by import pressure regulator valve 3 and outlet pressure regulator valve 15, valve stroke adjusting mechanism 8 can control valve stroke, flowmeter 4 can record the air intake duct flow of cylinder cap 9 to be measured, paddle wheel anemometer 12 can record and roll circulation speed, also can roll circulation speed with the measurement of momentum moment tester.
For reducing to export the interference to pressure surge in simulation cylinder 11 in pressure regulator valve 15 adjustment process further, design is optimized to the structure of the 4th pressurizer tank 14, preferably the 4th pressurizer tank 14 is divided into expansion segment 141, interlude 142 and contraction section 143 3 part, along the air-flow direction of propagation, expansion segment 141 intracavity diameter increases gradually, and interlude 142 intracavity diameter is constant to be reduced gradually with contraction section 143 intracavity diameter.When by outlet pressure regulator valve 15 to simulation cylinder 11 in pressure adjust time, reflection wave reverse propagation in the 4th pressurizer tank 14, first effectively can eliminate reflection wave through contraction section 143, reduce simulation cylinder 11 in pressure surge.
For reducing to export the response time to pressure in simulation cylinder 11 in pressure regulator valve 15 adjustment process further, be optimized design to the structure of the 3rd pressurizer tank 13, preferably the volume ratio of the 3rd pressurizer tank 13 and the 4th pressurizer tank 14 is 1:5.
For reducing the pressure surge to the second pressurizer tank 5 in import pressure regulator valve 3 adjustment process further, design is optimized to the structure of the second pressurizer tank 5, preferably the second pressurizer tank 5 is divided into front expansion segment 51, rear steady flow segment 52 two parts, along the air-flow direction of propagation, front expansion segment 51 intracavity diameter increases gradually, and rear steady flow segment 52 intracavity diameter is constant.When being adjusted by the pressure of import pressure regulator valve 3 to the second pressurizer tank 5, air-flow first effectively can eliminate pressure surge through front expansion segment 51, reduces the pressure surge after the second pressurizer tank 5.
The method of work of stream test unit is rolled in a kind of engine high pressure air inlet, it is characterized in that: air is pressurized to 700kPa through pneumatic plant 1, then the first pressurizer tank 2 that volume is 3000L is entered, then import pressure regulator valve 3 and flowmeter 4 is flowed through, the pressure of the second pressurizer tank 5 is adjusted to 350kPa by import pressure regulator valve 3, then air flue and the simulation cylinder 11 of cylinder cap 9 to be measured is entered, then the 3rd pressurizer tank 13 is entered, the 4th pressurizer tank 14 is flowed into again from the 3rd pressurizer tank 13, adjust the pressure of simulation cylinder 11 inside to 180kPa through outlet pressure regulator valve 15, finally enter into air;
Air mass flow is measured by flowmeter 4, and the airway resistance of cylinder cap 9 to be measured is measured by the airway pressure sensor 6 on pipeline before being arranged on air flue and the in-cylinder pressure sensor 10 on simulation cylinder 11, and the front and back intake pressure difference of the air flue of cylinder cap 9 to be measured is 170kPa;
Circulation speed is rolled in paddle wheel anemometer or the measurement of amount of flow square measuring instrument.
Claims (5)
1. a stream test unit is rolled in engine high pressure air inlet, comprises pneumatic plant (1), first pressurizer tank (2), import pressure regulator valve (3), flowmeter (4), second pressurizer tank (5), airway pressure sensor (6), lift range sensor (7), valve stroke adjusting mechanism (8), cylinder cap to be measured (9), in-cylinder pressure sensor (10), simulation cylinder (11), paddle wheel anemometer (12), 3rd pressurizer tank (13), 4th pressurizer tank (14), outlet pressure regulator valve (15), it is characterized in that: cylinder cap to be measured (9) is arranged in simulation cylinder (11), valve stroke adjusting mechanism (8) is arranged on cylinder cap to be measured (9), before the airintake direction of cylinder cap to be measured (9), there is pipeline to connect the second pressurizer tank (5), pipeline between cylinder cap to be measured (9) and the second pressurizer tank (5) is provided with airway pressure sensor (6), before the airintake direction of the second pressurizer tank (5), there is pipeline to connect the first pressurizer tank (2), pipeline between the first pressurizer tank (2) and the second pressurizer tank (5) is provided with import pressure regulator valve (3) and flowmeter (4), before the airintake direction of the first pressurizer tank (2), pneumatic plant (1) is installed, simulation cylinder (11) is connected with the 3rd pressurizer tank (13), 3rd pressurizer tank (13) is connected with the 4th pressurizer tank (14), 4th pressurizer tank (14) is communicated with air by outlet pressure regulator valve (15), in simulation cylinder (11), in-cylinder pressure sensor (10) is installed, the paddle wheel anemometer (12) measured and roll circulation speed is installed in simulation cylinder (11).
2. stream test unit is rolled in engine high pressure air inlet according to claim 1, it is characterized in that: described 4th pressurizer tank (14) is divided into expansion segment (141), interlude (142) and contraction section (143) three part, along the air-flow direction of propagation, expansion segment (141) intracavity diameter increases gradually, interlude (142) intracavity diameter is constant, and contraction section (143) intracavity diameter reduces gradually.
3. stream test unit is rolled in engine high pressure air inlet according to claim 1, it is characterized in that: the 3rd pressurizer tank (13) is 1:5 with the volume ratio of the 4th pressurizer tank (14).
4. stream test unit is rolled in engine high pressure air inlet according to claim 1, it is characterized in that: the second pressurizer tank (5) is divided into front expansion segment (51), rear steady flow segment (52) two parts, along the air-flow direction of propagation, front expansion segment (51) intracavity diameter increases gradually, and rear steady flow segment (52) intracavity diameter is constant.
5. the method for work flowing test unit is rolled in an engine high pressure air inlet, it is characterized in that: air is pressurized to 700kPa through pneumatic plant (1), then the first pressurizer tank (2) that volume is 3000L is entered, then import pressure regulator valve (3) and flowmeter (4) is flowed through, the pressure of the second pressurizer tank (5) is adjusted to 350kPa by import pressure regulator valve (3), then air flue and simulation cylinder (11) of cylinder cap to be measured (9) is entered, then the 3rd pressurizer tank (13) is entered, the 4th pressurizer tank (14) is flowed into again from the 3rd pressurizer tank (13), pressure through outlet pressure regulator valve (15) adjustment simulation cylinder (11) inside is to 180kPa, finally enter into air,
Air mass flow is measured by flowmeter (4), the airway resistance of cylinder cap to be measured (9) is measured by the airway pressure sensor (6) on pipeline before being arranged on air flue and the in-cylinder pressure sensor (10) in simulation cylinder (11), and the front and back intake pressure difference of the air flue of cylinder cap to be measured (9) is 170kPa;
Paddle wheel anemometer (12) is measured and is rolled circulation speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510988169.7A CN105372073A (en) | 2015-12-25 | 2015-12-25 | High-pressure tumble air intake testing device for engine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510988169.7A CN105372073A (en) | 2015-12-25 | 2015-12-25 | High-pressure tumble air intake testing device for engine |
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| CN105372073A true CN105372073A (en) | 2016-03-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510988169.7A Pending CN105372073A (en) | 2015-12-25 | 2015-12-25 | High-pressure tumble air intake testing device for engine |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107367390A (en) * | 2017-08-14 | 2017-11-21 | 广西玉柴机器股份有限公司 | Engine pedestal air inlet voltage-stabilizing system |
| CN107607324A (en) * | 2017-09-23 | 2018-01-19 | 中北大学 | A kind of opposed-piston engine scavenging process streaming flow test device |
| CN108979912A (en) * | 2018-08-17 | 2018-12-11 | 全椒县全动机械有限公司 | A kind of air-intake of combustion engine tumble flow measurement structure |
| CN113405802A (en) * | 2021-08-19 | 2021-09-17 | 潍柴动力股份有限公司 | Rolling flow test tool and rolling flow test equipment |
| CN113405803A (en) * | 2021-08-19 | 2021-09-17 | 潍柴动力股份有限公司 | Rolling flow test tool and rolling flow test equipment |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107367390A (en) * | 2017-08-14 | 2017-11-21 | 广西玉柴机器股份有限公司 | Engine pedestal air inlet voltage-stabilizing system |
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| CN113405802A (en) * | 2021-08-19 | 2021-09-17 | 潍柴动力股份有限公司 | Rolling flow test tool and rolling flow test equipment |
| CN113405803A (en) * | 2021-08-19 | 2021-09-17 | 潍柴动力股份有限公司 | Rolling flow test tool and rolling flow test equipment |
| CN113405803B (en) * | 2021-08-19 | 2021-12-17 | 潍柴动力股份有限公司 | Rolling flow test tool and rolling flow test equipment |
| CN113405802B (en) * | 2021-08-19 | 2021-12-21 | 潍柴动力股份有限公司 | Rolling flow test tool and rolling flow test equipment |
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Application publication date: 20160302 |
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