CN102353541B - Device for collecting lubricating oil of crankcase ventilation system and engine oil collecting method for device - Google Patents
Device for collecting lubricating oil of crankcase ventilation system and engine oil collecting method for device Download PDFInfo
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- CN102353541B CN102353541B CN 201110209793 CN201110209793A CN102353541B CN 102353541 B CN102353541 B CN 102353541B CN 201110209793 CN201110209793 CN 201110209793 CN 201110209793 A CN201110209793 A CN 201110209793A CN 102353541 B CN102353541 B CN 102353541B
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- 239000010687 lubricating oil Substances 0.000 title claims abstract description 30
- 238000009423 ventilation Methods 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000010705 motor oil Substances 0.000 title abstract description 9
- 239000010729 system oil Substances 0.000 title 1
- 238000010438 heat treatment Methods 0.000 claims abstract description 14
- 239000003921 oil Substances 0.000 claims description 17
- 238000005303 weighing Methods 0.000 claims description 7
- 238000012360 testing method Methods 0.000 abstract description 11
- 238000000926 separation method Methods 0.000 abstract description 5
- 238000005259 measurement Methods 0.000 abstract description 2
- 238000009413 insulation Methods 0.000 abstract 5
- 230000001105 regulatory effect Effects 0.000 abstract 2
- 239000007789 gas Substances 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 239000000203 mixture Substances 0.000 description 5
- 239000002912 waste gas Substances 0.000 description 5
- 239000010721 machine oil Substances 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
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Abstract
The invention provides a device for collecting lubricating oil of a crankcase ventilation system and an engine oil collecting method for the device, which aim to better test and evaluate the engine oil separation efficiency of an engine oil separation device and objectively reflect the measurement level of the lubricating oil of an engine. The device for collecting the lubricating oil of the crankcase ventilation system comprises a three-way valve, a heat insulation cavity, a vacuum pump and a pressure regulating valve, wherein an output end of the three-way valve is communicated with an air inlet of the heat insulation cavity; an air outlet of the heat insulation cavity is communicated with the vacuum pump through the pressure regulating valve; the heat insulation cavity is provided with a heating device; and the air inlet and the air outlet of the heat insulation cavity are isolated from each other through filter paper. The device has a simple structure; by the device and the method, the influences of heat engine and cold engine processes on engine oil collecting results can be effectively eliminated; simultaneously, the influences of a complete set of cascade engine oil collecting device on the pressure, flow, flow velocity and engine oil carrying capacity of the crankcase ventilation system can also be eliminated; and in the collection process, temperatures are constant, the influence of an ambient environment air temperature on a collected object can be eliminated, and a test result is accurate.
Description
Technical field
The invention belongs to automobile engine crankcase aeration technology field, specially refer to a kind of crankcase ventilation system lubricating oil carry-over gathering-device and oil collecting method thereof.
Background technology
Engine crankshaft ventilation system be Vehicular internal combustion engine from a kind of new technique that begin to adopt the sixties in 20th century, can improve engine performance, improve service life of aeroengine, reduce engine exhaust pollutant index.Extensively adopt the forced draft mode to realize the purpose of ventilating on the Modern Automobile Engine, namely by the gas in the swabbing action suction crankcase that utilizes engine aspirating system, suck in the cylinder and rekindle scurrying into combustion mixture in the crankcase and waste gas, thereby realize the recycling of waste gas in the crankcase.This not only is conducive to improve the economy of engine, but also has alleviated the exhaust emission of engine.Yet being forced to suck crankcase gas blowby (blow by gas) that cylinder burns can carry certain oil formulation and enter the firing chamber and together burn, this has aggravated consumption of lubricating oil on the one hand, also worsened on the other hand combustion process, therefore the oil-gas separation efficiency of the oil separating devices such as engine valve cover and oil-gas separator is had higher requirement, simultaneously to how testing better and estimate the machine oil separation efficiency of oil separating device, the real engine lubricating oil carry-over water gaging of the objective reflection of wash rice is flat more clearly to adopt which kind of method or equipment, also has higher requirement.
Engine crankshaft ventilation system lubricating oil carry-over amount (the Oil Carry Over) method of testing that extensively adopts now is as follows: condenser is connected with receiving flask (vial) access in the engine crank case ventilation pipeline, operate in fixation test operating mode certain hour after the heat engine, the mixture weight of collecting in the receiving flask behind the weighing condenser after the off-test, and mix ingredients separated to draw oil formulation quality in the potpourri.Not enough below above-mentioned method of testing exists, cause measurement result not accurate enough, can't react real engine lubricating oil carry-over water gaging and put down: 1, condensate temperature can't accurately be controlled, and the condenser condenses effect changes difference greatly with water temperature; The glass receiving flask is directly exposed in the experimental enviroment, and the gleanings result is subjected to surrounding environment temperature differences affects larger, sometimes may be because temperature be lower so that gasoline, water be condensed in the potpourri; 2, the machine oil that carries in the crankcase waste gas in heat engine, the cold machine process is included among the final gleanings result; To such an extent as to 3, can exert an influence to crankcase ventilation system pressure, flow, flow velocity engine oil carrying quantity behind series connection condenser and the receiving flask.
Summary of the invention
The objective of the invention is to propose a kind of crankcase ventilation system lubricating oil carry-over gathering-device and oil collecting method thereof, to test better and to estimate the machine oil separation efficiency of oil separating device, reflect that objectively engine lubricating oil carry-over water gaging is flat.
Crankcase ventilation system lubricating oil carry-over gathering-device of the present invention comprises T-valve, heat-insulated cavity, vacuum pump, pressure-regulating valve, an output terminal of described T-valve communicates with the air intake opening of heat-insulated cavity, and the gas outlet of described heat-insulated cavity communicates with vacuum pump by pressure-regulating valve; Described heat-insulated cavity is provided with heating arrangement, isolates by filter paper between the air intake opening of described heat-insulated cavity and the gas outlet.
Further, described heat-insulated cavity is made of a cover-lifting type casing, is provided with cone shape cavity in the casing, and the flared end of described cavity communicates with the air intake opening of heat-insulated cavity, the necking end of described cavity communicates with the gas outlet of heat-insulated cavity, and described filter paper is arranged in the cavity.Cone shape cavity is conducive to reduce the gas flow rate that enters from air intake opening, thereby machine oil is sticked on the filter paper; The cover-lifting type casing filter paper of conveniently placing and take.
Further, described heating arrangement comprises power supply, switch, heater coil, temperature sensor and temperature indicating device, and described power supply, switch, heater coil are connected successively, and described temperature sensor links to each other with temperature indicating device; Described heater coil is arranged at outside the tank wall, and described temperature sensor is arranged in the tank wall.Can detect in real time temperature in the casing by temperature sensor, thereby make the temperature Pass Test requirement in the casing.
Further, described heating arrangement also is provided with a controller, and described controller receives the signal of temperature sensor, and according to the work of the described switch of this signal controlling.Utilize controller to come the work of automatic control switch, thereby the closed loop that has realized spin manifold temperature is controlled automatically.
The oil collecting method of above-mentioned crankcase ventilation system lubricating oil carry-over gathering-device comprises the steps:
A: gravimetric value M1 and the record of weighing filter paper, then filter paper is put into heat-insulated cavity; Input end and the idle output terminal of T-valve are connected in series in the air pipeline of engine crankshaft ventilation system to be measured;
B: close the path that T-valve leads to heat-insulated cavity, starting engine carries out heat engine, and the steady state operating condition after heat engine finishes is measured engine crankcase pressure or valve chamber cover pressure value P 1; Start simultaneously heating arrangement, make the temperature in the heat-insulated cavity reach predetermined temperature t;
C: open the path that T-valve leads to heat-insulated cavity, start simultaneously vacuum pump, utilize pressure-regulating valve to regulate the negative pressure value that vacuum pump produces, the pressure value P 1 that records in the engine crankcase pressure of this moment or valve chamber cover pressure value P 2 and the B step is equated;
D: engine is worked under predetermined load behind the schedule time T, and filter paper and the weighing of taking out in the heat-insulated cavity obtain new gravimetric value M2, by formula M=(M2-M1)/T calculates on average per hour lubricating oil carry-over amount M.
In above-mentioned test process, utilize T-valve control waste gas streams to, can effectively eliminate heat engine, cold machine process to oil collecting result's impact; Can effectively eliminate because the impact that a whole set of oil collecting device of connecting produces crankcase ventilation system pressure, flow, flow velocity and engine oil carrying quantity by vacuum pump and pressure-regulating valve; Heating arrangement can make the temperature in the heat-insulated cavity remain on suitable temperature, guarantees that the result of final gleanings can not be subject to surrounding environment temperature differences affects.
Specifically, predetermined temperature t in the described B step is 140 ± 2 ℃, this temperature can prevent effectively that the moisture and the gasolene ingredient that contain in the waste gas from condensing on the filter paper, having overcome condensate temperature in the traditional condenser collection method can't accurately control with the glass receiving flask and be exposed in the atmosphere, collect the potpourri result and be subjected to circumstance of temperature difference to affect large shortcoming, therefore can be so that test result be more accurate, true, reliable.
Specifically, predetermined load comprises rated speed full load and rated speed 30% load in the described D step, and is flat with the engine lubricating oil carry-over water gaging of testing better under different operating modes.
Crankcase ventilation system lubricating oil carry-over gathering-device of the present invention is simple in structure, and its oil collecting method is practical, and test result is accurate, can reflect objectively that engine lubricating oil carry-over water gaging is flat.
Description of drawings
Fig. 1 is the catenation principle figure of crankcase ventilation system lubricating oil carry-over gathering-device of the present invention.
Fig. 2 is the schematic diagram of heating arrangement in the crankcase ventilation system lubricating oil carry-over gathering-device of the present invention.
Embodiment
The below contrasts accompanying drawing, by the description to embodiment, the effect of the mutual alignment between the shape of the specific embodiment of the present invention such as related each member, structure, the each several part and annexation, each several part and principle of work etc. are described in further detail.
Embodiment 1:
As shown in the figure, the crankcase ventilation system lubricating oil carry-over gathering-device of present embodiment comprises T-valve 1, heat-insulated cavity 2, vacuum pump 3, pressure-regulating valve 4, an output terminal of T-valve 1 communicates with the air intake opening 21 of heat-insulated cavity 2, and the gas outlet 22 of heat-insulated cavity 2 communicates with vacuum pump 3 by pressure-regulating valve 4.
Heat-insulated cavity 2 is made of a cover-lifting type casing, be provided with cone shape cavity 23 in the casing, the flared end of cavity 23 communicates with the air intake opening of heat-insulated cavity 21, the necking end of cavity 23 communicates with the gas outlet of heat-insulated cavity 22, isolates by filter paper 24 between the air intake opening 21 of heat-insulated cavity and the gas outlet 22.
Heat-insulated cavity 2 is provided with heating arrangement 5, heating arrangement 5 comprises power supply 51, switch 52, heater coil 53, temperature sensor 54, temperature indicating device 55 and controller 56, wherein power supply 51, switch 52, temperature indicating device 55 and controller 56 are integrated in the control box 57, power supply 51, switch 52, heater coil 63 are connected successively, and temperature sensor 54 links to each other with temperature indicating device 55, controller 56 respectively; Heater coil 53 is arranged at outside the tank wall of heat-insulated cavity 2, and temperature sensor 54 is arranged in the tank wall of heat-insulated cavity 2; Controller 56 receives the signal of temperature sensors 54, and according to the work of this Signal-controlled switch 52, automatically controls with the closed loop of the spin manifold temperature of realizing heat-insulated cavity 2.
The oil collecting method of above-mentioned crankcase ventilation system lubricating oil carry-over gathering-device comprises the steps:
A: gravimetric value M1 and the record of weighing filter paper, then filter paper is put into heat-insulated cavity; Input end and the idle output terminal of T-valve are connected in series in the air pipeline of engine crankshaft ventilation system to be measured;
B: close the path that T-valve leads to heat-insulated cavity, starting engine carries out heat engine, and the steady state operating condition after heat engine finishes is measured engine crankcase pressure value P 1; Start simultaneously heating arrangement, make the temperature in the heat-insulated cavity reach 140 ± 2 ℃ of predetermined temperatures;
C: open the path that T-valve leads to heat-insulated cavity, start simultaneously vacuum pump, utilize pressure-regulating valve to regulate the negative pressure value that vacuum pump produces, the pressure value P 1 that records in the engine crankcase pressure value P 2 that finally makes this moment and the B step equates;
D: make engine behind the schedule time T that works under rated speed full load or rated speed 30% load condition, filter paper and the weighing of taking out in the heat-insulated cavity obtain new gravimetric value M2, by formula M=(M2-M1)/T calculates the per hour lubricating oil carry-over amount M(unit of engine under average rated speed full load or rated speed 30% load condition: g/h).
Claims (6)
1. crankcase ventilation system lubricating oil carry-over gathering-device, it is characterized in that comprising T-valve, heat-insulated cavity, vacuum pump, pressure-regulating valve, an output terminal of described T-valve communicates with the air intake opening of heat-insulated cavity, and the gas outlet of described heat-insulated cavity communicates with vacuum pump by pressure-regulating valve; Described heat-insulated cavity is provided with heating arrangement, isolates by filter paper between the air intake opening of described heat-insulated cavity and the gas outlet; Described heat-insulated cavity is made of a cover-lifting type casing, is provided with cone shape cavity in the casing, and the two ends of described cavity communicate with air intake opening, the gas outlet of heat-insulated cavity respectively, and described filter paper is arranged in the cavity.
2. crankcase ventilation system lubricating oil carry-over gathering-device according to claim 1, it is characterized in that described heating arrangement comprises power supply, switch, heater coil, temperature sensor and temperature indicating device, described power supply, switch, heater coil are connected successively, and described temperature sensor links to each other with temperature indicating device; Described heater coil is arranged at outside the tank wall, and described temperature sensor is arranged in the tank wall.
3. crankcase ventilation system lubricating oil carry-over gathering-device according to claim 2 is characterized in that described heating arrangement also is provided with a controller, and described controller receives the signal of temperature sensor, and according to the work of the described switch of this signal controlling.
4. the oil collecting method of crankcase ventilation system lubricating oil carry-over gathering-device according to claim 1 is characterized in that comprising the steps:
A: gravimetric value M1 and the record of weighing filter paper, then filter paper is put into heat-insulated cavity; Input end and the idle output terminal of T-valve are connected in series in the air pipeline of engine crankshaft ventilation system to be measured;
B: close the path that T-valve leads to heat-insulated cavity, starting engine carries out heat engine, and the steady state operating condition after heat engine finishes is measured engine crankcase pressure or valve chamber cover pressure value P 1; Start simultaneously heating arrangement, make the temperature in the heat-insulated cavity reach predetermined temperature t;
C: open the path that T-valve leads to heat-insulated cavity, start simultaneously vacuum pump, utilize pressure-regulating valve to regulate the negative pressure value that vacuum pump produces, the pressure value P 1 that records in the engine crankcase pressure of this moment or valve chamber cover pressure value P 2 and the B step is equated;
D: engine is worked under predetermined load behind the schedule time T, and filter paper and the weighing of taking out in the heat-insulated cavity obtain new gravimetric value M2, by formula M=(M2-M1)/T calculates on average per hour lubricating oil carry-over amount M.
5. the oil collecting method of crankcase ventilation system lubricating oil carry-over gathering-device according to claim 4 is characterized in that the predetermined temperature t in the described B step is 140 ± 2 ℃.
6. the oil collecting method of crankcase ventilation system lubricating oil carry-over gathering-device according to claim 4 is characterized in that predetermined load comprises rated speed full load and rated speed 30% load in the described D step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 201110209793 CN102353541B (en) | 2011-07-26 | 2011-07-26 | Device for collecting lubricating oil of crankcase ventilation system and engine oil collecting method for device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110209793 CN102353541B (en) | 2011-07-26 | 2011-07-26 | Device for collecting lubricating oil of crankcase ventilation system and engine oil collecting method for device |
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| CN102353541A CN102353541A (en) | 2012-02-15 |
| CN102353541B true CN102353541B (en) | 2013-01-30 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102494881A (en) * | 2011-11-30 | 2012-06-13 | 长城汽车股份有限公司 | Detecting device for oil-gas separation efficiency of cylinder head cover |
| CN106321414B (en) * | 2016-08-29 | 2018-08-07 | 潍柴动力股份有限公司 | Air compressor machine air-following oil drain quantity testing tool |
| CN109752189A (en) * | 2019-01-11 | 2019-05-14 | 宜宾凯翼汽车有限公司 | A kind of gas and oil separating plant and test method of test engine oil-gas separation efficiency |
| CN110320045A (en) * | 2019-07-09 | 2019-10-11 | 安徽江淮汽车集团股份有限公司 | The device and method of oil measurement are altered for engine |
| CN112051047B (en) * | 2020-09-07 | 2022-12-09 | 中国第一汽车股份有限公司 | Crankcase ventilation system carries out machine oil and measures and recovery unit |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2037468U (en) * | 1988-06-25 | 1989-05-10 | 河北省交通科学研究所 | Blow-by detector of engine |
| DE3923453A1 (en) * | 1988-07-22 | 1990-01-25 | Tokyo Keiso Kk | METHOD AND DEVICE FOR MEASURING A CONDENSIBLE COMPONENT, LIQUID MIST AND THE LIKE CONTAINING GAS FLOW |
| CN201007691Y (en) * | 2007-01-31 | 2008-01-16 | 重庆宗申技术开发研究有限公司 | Engine crankcase air leak amount testing device |
| CN201535716U (en) * | 2009-05-22 | 2010-07-28 | 重庆长安汽车股份有限公司 | Crankcase blowby oil content measuring device |
| CN201653692U (en) * | 2010-02-10 | 2010-11-24 | 哈尔滨东安汽车发动机制造有限公司 | Crankshaft case oil pumping amount measuring apparatus |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011027073A (en) * | 2009-07-29 | 2011-02-10 | Denso Corp | Abnormality diagnosis device of internal combustion engine |
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- 2011-07-26 CN CN 201110209793 patent/CN102353541B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2037468U (en) * | 1988-06-25 | 1989-05-10 | 河北省交通科学研究所 | Blow-by detector of engine |
| DE3923453A1 (en) * | 1988-07-22 | 1990-01-25 | Tokyo Keiso Kk | METHOD AND DEVICE FOR MEASURING A CONDENSIBLE COMPONENT, LIQUID MIST AND THE LIKE CONTAINING GAS FLOW |
| CN201007691Y (en) * | 2007-01-31 | 2008-01-16 | 重庆宗申技术开发研究有限公司 | Engine crankcase air leak amount testing device |
| CN201535716U (en) * | 2009-05-22 | 2010-07-28 | 重庆长安汽车股份有限公司 | Crankcase blowby oil content measuring device |
| CN201653692U (en) * | 2010-02-10 | 2010-11-24 | 哈尔滨东安汽车发动机制造有限公司 | Crankshaft case oil pumping amount measuring apparatus |
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