CN104458272A - Exhaust smoke test method and device for engine - Google Patents
Exhaust smoke test method and device for engine Download PDFInfo
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- CN104458272A CN104458272A CN201410746216.2A CN201410746216A CN104458272A CN 104458272 A CN104458272 A CN 104458272A CN 201410746216 A CN201410746216 A CN 201410746216A CN 104458272 A CN104458272 A CN 104458272A
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Abstract
The invention discloses an exhaust smoke test method and device for an engine. The test device comprises an air storage tank, a first opening valve, a second opening valve and a booster pump. The two ends of the air storage tank serve as an air inflow end and an air outflow end respectively, the air inflow end is communicated with a front exhaust pipe of a turbo-supercharger of the engine, the air outflow end is communicated with a rear exhaust pipe of the turbo-supercharger of the engine, a smoke meter is arranged on the air storage tank, a probe of the smoke meter stretches into the air storage tank, and a pressure sensor is installed in the air storage tank. The first opening valve and the second opening valve are arranged at the air inflow end and the air outflow end of the air storage tank respectively. The booster pump is connected between the air storage tank and the front exhaust pipe of the turbo-supercharger of the engine. The device can be suitable for conducting a real-time exhaust smoke temperature test on the engine under various operating working conditions, test cost is reduced, and meanwhile accurate engine exhaust smoke measured data are creatively provided for engineers.
Description
Technical field
The present invention relates to Engine Block Test field, particularly a kind of exhaust smoke method of testing of engine and proving installation.
Background technology
At present, engine exhaust smoke intensity is measured by exhaust smoke meter, when using smokemetor to measure, mostly take directly sampling and measuring in engine whirlpool final vacuum pipe, and exhaust back pressure should meet the scope between-10 ~ 40kPa, exceed this limit value, smokemetor then there will be measuring condition and does not meet and cannot carry out, and affects carrying out of surveying work.Especially engine carries out in the test process of highland test at air inlet and exhaust piper simulated high altitude environment, and pressure reduction export with smokemetor due to smokemetor probe is excessive and cause sample flow deficiency, and cause test findings to measure, measurement result is inaccurate.
The information being disclosed in this background technology part is only intended to increase the understanding to general background of the present invention, and should not be regarded as admitting or imply in any form that this information structure has been prior art that persons skilled in the art are known.
Summary of the invention
The object of the present invention is to provide a kind of exhaust smoke method of testing and proving installation of engine, the test of real-time ventilation smoke intensity is carried out under adapting to each operating mode of engine operation, reduce experimentation cost, simultaneously novelty provide accurate engine exhaust smoke measurement data to engineering staff.
For achieving the above object, the invention provides a kind of exhaust smoke method of testing of engine, comprise the steps: step, a kind of gas-holder is provided, and the two ends of this gas-holder are connected with the front exhaust pipe of the turbosupercharger of engine and final vacuum pipe respectively, gets exhaust by this gas-holder from the front exhaust pipe of the turbosupercharger of engine; Step 2, the discharge pressure in adjustment gas-holder; And step 3, utilize smokemetor to be exhausted smoke intensity test to the exhaust in gas-holder.
Preferably, in step 2, adjust discharge pressure in gas-holder by setting up aperture valve at the two ends of gas-holder.
Preferably, between the front exhaust pipe of the turbosupercharger of gas-holder and engine, access booster, utilize the discharge pressure in booster raising gas-holder.
Present invention also offers a kind of exhaust smoke proving installation of engine, comprise: gas-holder, its two ends have inlet end and outlet side respectively, the front exhaust pipe of the turbosupercharger of inlet end and engine is connected, the final vacuum pipe of the turbosupercharger of outlet side and engine is connected, gas-holder is provided with smokemetor, and the probe of smokemetor stretches in gas-holder, is provided with pressure transducer in gas-holder; First aperture valve and the second aperture valve, it is located at inlet end and the outlet side of gas-holder respectively; And booster, between the front exhaust pipe of the turbosupercharger of its access gas-holder and engine.
Preferably, the inlet end of gas-holder and outlet side are taper.
Preferably, the cone angle of taper is 45 °.
Preferably, gas-holder is connected by tracheae and front exhaust pipe and final vacuum pipe, and the diameter connecting the tracheae of inlet end is greater than the diameter of the tracheae connecting outlet side.
Preferably, the sidewall of gas-holder is provided with the mounting hole of the probe installing smokemetor, and the diameter of mounting hole is greater than the diameter of the tracheae connecting inlet end.
Preferably, the length of gas-holder and the ratio of diameter are 9:1.
Preferably, mounting hole is located at 2/3 position from inlet end.
Compared with prior art, the present invention has following beneficial effect: by directly getting the method for gas before engine whirlpool, before utilizing whirlpool, pressure differential behind whirlpool, the booster of gas-holder front end in addition, the aperture valve at gas-holder two ends, guarantee that in gas-holder, sampling air pressure is constant in a certain setting value meeting smokemetor measurement demand, especially be negative value at exhaust back pressure, smokemetor self pneumatic pump cannot meet the situation use of self measuring and requiring, the test of real-time ventilation smoke intensity is carried out under adapting to each operating mode of engine operation, reduce experimentation cost, simultaneously novelty provide accurate engine exhaust smoke measurement data to engineering staff.
Accompanying drawing explanation
Fig. 1 is the connection diagram of the exhaust smoke proving installation according to engine of the present invention;
Fig. 2 is the schematic diagram of the exhaust smoke proving installation according to engine of the present invention;
Fig. 3 is a kind of mode of operation schematic diagram of the exhaust smoke proving installation according to engine of the present invention;
Fig. 4 is the another kind of mode of operation schematic diagram of the exhaust smoke proving installation according to engine of the present invention.
Main Reference Numerals illustrates:
1-gas-holder, 11-mounting hole, 21-first aperture valve, 22-second aperture valve, 3-booster.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail, but is to be understood that protection scope of the present invention not by the restriction of embodiment.
Clearly represent unless otherwise other, otherwise in whole instructions and claims, term " comprise " or its conversion as " comprising " or " including " etc. by be understood to include the element of stating or ingredient, and do not get rid of other element or other ingredient.
According to the method for testing of a kind of engine exhaust smoke intensity of the specific embodiment of the invention, comprise the steps:
Step one, stand according to engine model and air inlet and exhaust piper is arranged, process a kind of gas-holder, and formation closed loop is connected with the front exhaust pipe of the turbosupercharger of engine and final vacuum pipe respectively in the two ends of this gas-holder, gets exhaust by this gas-holder from the front exhaust pipe of the turbosupercharger of engine;
Step 2, the discharge pressure in adjustment gas-holder; And
Step 3, utilizes smokemetor to be exhausted smoke intensity test to the exhaust in gas-holder, particularly, is connected with dynamometer machine by engine to be measured, installs after smoke intensity takes into account pressure/temperature sensor and run engine, record the smoke intensity value under each operating mode.
For the method for testing of above-mentioned engine exhaust smoke intensity, the present embodiment provides a kind of exhaust smoke proving installation of a kind of engine of real the method, specific as follows:
As shown in Figures 1 and 2, according to the exhaust smoke proving installation of a kind of engine of the specific embodiment of the invention, comprise gas-holder 1, first aperture valve 21, second aperture valve 22 and booster 3, wherein the two ends of gas-holder 1 have inlet end and outlet side respectively, the front exhaust pipe 102 of the turbosupercharger 10 of inlet end and engine is connected, the final vacuum pipe 101 of the turbosupercharger 10 of outlet side and engine is connected, gas-holder 1 is provided with smokemetor (not shown), the probe of smokemetor stretches in gas-holder 1, pressure transducer (not shown) is installed in gas-holder 1.First aperture valve 21 and the second aperture valve 22 are located at inlet end and the outlet side of gas-holder 1 respectively.Booster 3 accesses between the front exhaust pipe 102 of the turbosupercharger 10 of gas-holder 1 and engine.
In such scheme, true, reliable in order to ensure data out measured by above-mentioned steps, the inlet end of gas-holder 1 and outlet side are taper, and the cone angle of taper is 45 ° (being beneficial to gas uniform mixing).Gas-holder 1 is connected by tracheae and front exhaust pipe 102 and final vacuum pipe 101, connects the diameter d of the tracheae 13 of inlet end
1be greater than the diameter d of the tracheae 14 connecting outlet side
2, the sidewall of gas-holder 1 is provided with the mounting hole 11 of the probe installing smokemetor, and the diameter d of mounting hole 11 is greater than the diameter d of the tracheae 13 connecting inlet end
1, i.e. d>d
2>d
1.The gas-holder 1 (drainage system) of processing should meet the condition needed for smokemetor sampling, avoid departing from of measurement result, the length of gas-holder and the ratio of diameter are 9:1, mounting hole is located at 2/3 position (see Fig. 2) from inlet end, suppose that the diameter of gas-holder is D, in the mounting hole 11 of the smokemetor that gas-holder 1 is installed and tank, Pressure/Temperature measuring point (pressure/temperature sensor mounting hole 12) should be in the requirement of two positions as shown in Figure 2.
It should be noted that, gas-holder 1 should be installed but be not limited only to mounting hole, the Pressure/Temperature installation, measured hole etc. of gas sampled in hold-up vessel of smokemetor probe, and the whirlpool front exhaust sampling line of the present embodiment should use active lock sealing part, exhaust smoke sampler and associated pipe is made to be convenient to dismounting, to adjust installation position etc., as long as but material is suitable all can use, do not limited embodiment.For the connection of pipeline, there is more suitable loop and arrange and all can use, this example is only wherein a kind of path, does not represent the restriction to embodiment.This proving installation another should be able to realize the conversion between measurement and non-measured, and guarantees sealing.
When measuring, the measurement requirement of smokemetor whether is met according to gas-holder internal gas pressure size, the size of the aperture valve unlatching of setting gas-holder inlet and outlet end, if these two kinds of methods still can not promote the gaseous tension in gas-holder fully, can open booster and assist.In addition, the first aperture valve 21, second aperture valve 22 in the present embodiment should have according to the air pressure in gas-holder, temperature demand and adjust the function of unlatching amplitude, and the booster 3 on pipeline should possess the ability of the pump gas when pole lower negative pressure value.
The exhaust smoke proving installation specific works pattern that the present embodiment provides following (see Fig. 3 and Fig. 4):
Mode of operation 1: the first aperture valve 21, second aperture valve 22 closes, and booster 3 cuts out, and this is loop closed condition, enter in sampling apparatus (gas-holder 1) without gas before engine whirlpool, this pattern is without measurement pattern, and engine is without the need to measuring exhaust smoke state, and device is without work.
Mode of operation 2: the first aperture valve 21, second aperture valve 22 is opened, booster 3 cuts out, this is normal mode of operation, namely use when engine whirlpool front exhaust pressure is in the usable range of the smokemetor that gas-holder 1 is installed, booster 3 is in the normal open-circuit condition of deenergization, and the first aperture valve 21, second aperture valve 22 aperture can regulate according to concrete pressure.
Mode of operation 3: the first aperture valve 21, second aperture valve 22 closes, booster 3 is opened, also be normal mode of operation, namely use time in the usable range of the smokemetor that engine whirlpool front exhaust pressure is installed lower than gas-holder 1, the aperture of the first aperture valve 21, second aperture valve 22 and booster 3 all can regulate according to concrete pressure.
It should be noted that, in the step recording the smoke intensity value under each operating mode, for ensureing that in gas-holder, gas is vented consistent with engine actual condition, avoid the exhaust having a upper operating mode in gas-holder, first aperture valve 21, second aperture valve 22 should be in opening, is convenient to gas flow and passes to and change.
In a word, the method of testing of the engine exhaust smoke intensity that the present embodiment provides and proving installation, final vacuum pipe in engine whirlpool different from the past can measure the method for exhaust smoke, use the method for directly getting gas before whirlpool, before utilizing whirlpool, pressure differential behind whirlpool, the booster of gas-holder front end in addition, the aperture valve at gas-holder two ends, guarantee that in gas-holder, sampling air pressure is constant in a certain setting value meeting smokemetor measurement demand, especially be negative value at exhaust back pressure, smokemetor self pneumatic pump cannot meet the situation use of self measuring and requiring, the test of real-time ventilation smoke intensity is carried out under adapting to each operating mode of engine operation, reduce experimentation cost, simultaneously novelty provide accurate engine exhaust smoke measurement data to engineering staff.
The aforementioned description to concrete exemplary of the present invention is to illustrate and the object of illustration.These descriptions not want the present invention to be defined as disclosed precise forms, and obviously, according to above-mentioned instruction, can much change and change.The object selected exemplary embodiment and describe is to explain certain principles of the present invention and practical application thereof, thus those skilled in the art can be realized and utilize various different exemplary of the present invention and various different selection and change.Scope of the present invention is intended to limited by claims and equivalents thereof.
Claims (10)
1. an exhaust smoke method of testing for engine, is characterized in that, comprise the steps:
Step one, provides a kind of gas-holder, and is connected with the front exhaust pipe of the turbosupercharger of engine and final vacuum pipe respectively at the two ends of this gas-holder, gets exhaust by this gas-holder from the front exhaust pipe of the turbosupercharger of described engine;
Step 2, adjusts the discharge pressure in described gas-holder; And
Step 3, utilizes smokemetor to be exhausted smoke intensity test to the exhaust in described gas-holder.
2. the exhaust smoke method of testing of engine according to claim 1, is characterized in that, in described step 2, adjusts discharge pressure in described gas-holder by setting up aperture valve at the two ends of described gas-holder.
3. according to claim 2 and proving installation, is characterized in that, accesses booster between the front exhaust pipe of the turbosupercharger of described gas-holder and described engine, utilizes described booster to improve discharge pressure in described gas-holder.
4. an exhaust smoke proving installation for engine, is characterized in that, comprising:
Gas-holder, its two ends have inlet end and outlet side respectively, the front exhaust pipe of the turbosupercharger of described inlet end and engine is connected, the final vacuum pipe of the turbosupercharger of described outlet side and described engine is connected, described gas-holder is provided with smokemetor, the probe of described smokemetor stretches in described gas-holder, is provided with pressure transducer in described gas-holder;
First aperture valve and the second aperture valve, it is located at inlet end and the outlet side of described gas-holder respectively; And
Booster, it accesses between the front exhaust pipe of the turbosupercharger of described gas-holder and described engine.
5. the exhaust smoke proving installation of engine according to claim 4, is characterized in that, the inlet end of described gas-holder and outlet side are taper.
6. the exhaust smoke proving installation of engine according to claim 5, is characterized in that, the cone angle of described taper is 45 °.
7. the exhaust smoke proving installation of engine according to claim 6, it is characterized in that, described gas-holder is connected by tracheae and described front exhaust pipe and described final vacuum pipe, and the diameter connecting the tracheae of described inlet end is greater than the diameter of the tracheae connecting described outlet side.
8. the exhaust smoke proving installation of engine according to claim 6, is characterized in that, the sidewall of described gas-holder is provided with the mounting hole of the probe installing described smokemetor, and the diameter of described mounting hole is greater than the diameter of the tracheae connecting described inlet end.
9. the exhaust smoke proving installation of engine according to claim 8, is characterized in that, the length of described gas-holder and the ratio of diameter are 9:1.
10. the exhaust smoke proving installation of engine according to claim 9, is characterized in that, described mounting hole is located at 2/3 position from described inlet end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410746216.2A CN104458272A (en) | 2014-12-08 | 2014-12-08 | Exhaust smoke test method and device for engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410746216.2A CN104458272A (en) | 2014-12-08 | 2014-12-08 | Exhaust smoke test method and device for engine |
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| Publication Number | Publication Date |
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| CN104458272A true CN104458272A (en) | 2015-03-25 |
Family
ID=52904687
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| CN201410746216.2A Pending CN104458272A (en) | 2014-12-08 | 2014-12-08 | Exhaust smoke test method and device for engine |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106644611A (en) * | 2017-02-16 | 2017-05-10 | 大友（苏州）风洞技术有限公司 | Discharge sampling tester of engine plateau simulation system |
| CN107014619A (en) * | 2017-05-23 | 2017-08-04 | 安徽江淮汽车集团股份有限公司 | A kind of engine emissions testing fexible unit |
| CN107843698A (en) * | 2017-12-08 | 2018-03-27 | 广西玉柴机器股份有限公司 | A kind of device and method of automatic measurement engine smoke intensity |
| CN110608890A (en) * | 2019-08-05 | 2019-12-24 | 济南天业工程机械有限公司 | Engineering machine tool discharges test system |
| CN111999219A (en) * | 2020-07-13 | 2020-11-27 | 山东大学 | Smoke intensity detection method and system for engineering machinery |
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| JPS56104124A (en) * | 1979-11-26 | 1981-08-19 | Nissan Motor Co Ltd | Smoke control device for internal combustion engine |
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| DE102007049216A1 (en) * | 2007-10-13 | 2009-03-12 | Daimler Ag | Exhaust gas system tightness testing method for motor vehicle, involves supplying smoke trail material i.e. paraffin oil, to exhaust strand, and removing fuel supply line for supplying trail material from connection element of supply device |
| CN102422000A (en) * | 2009-06-25 | 2012-04-18 | 三菱重工业株式会社 | Engine exhaust energy recovery device |
| CN102454462A (en) * | 2010-11-03 | 2012-05-16 | 福特环球技术公司 | Method for monitoring a regulated emission concentration in the exhaust gas of an internal combustion engine |
| CN202522441U (en) * | 2012-02-17 | 2012-11-07 | 山东省农业机械科学研究所 | Exhaust smoke measurement acquisition device for tractor |
| CN203011834U (en) * | 2013-01-04 | 2013-06-19 | 吉林大学 | Laser type smoke opacimeter system for measuring smoke intensity of diesel engine exhaust |
| CN204214652U (en) * | 2014-12-08 | 2015-03-18 | 广西玉柴机器股份有限公司 | The exhaust smoke proving installation of engine |
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2014
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| JPS56104124A (en) * | 1979-11-26 | 1981-08-19 | Nissan Motor Co Ltd | Smoke control device for internal combustion engine |
| CN201025461Y (en) * | 2007-01-05 | 2008-02-20 | 武汉四方光电科技有限公司 | A measurement device for motor pollutant discharge volume and fuel consumption |
| DE102007049216A1 (en) * | 2007-10-13 | 2009-03-12 | Daimler Ag | Exhaust gas system tightness testing method for motor vehicle, involves supplying smoke trail material i.e. paraffin oil, to exhaust strand, and removing fuel supply line for supplying trail material from connection element of supply device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106644611A (en) * | 2017-02-16 | 2017-05-10 | 大友（苏州）风洞技术有限公司 | Discharge sampling tester of engine plateau simulation system |
| CN107014619A (en) * | 2017-05-23 | 2017-08-04 | 安徽江淮汽车集团股份有限公司 | A kind of engine emissions testing fexible unit |
| CN107843698A (en) * | 2017-12-08 | 2018-03-27 | 广西玉柴机器股份有限公司 | A kind of device and method of automatic measurement engine smoke intensity |
| CN110608890A (en) * | 2019-08-05 | 2019-12-24 | 济南天业工程机械有限公司 | Engineering machine tool discharges test system |
| CN111999219A (en) * | 2020-07-13 | 2020-11-27 | 山东大学 | Smoke intensity detection method and system for engineering machinery |
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Application publication date: 20150325 |
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