CN201826925U - Ventilation system for automobile crankcase - Google Patents
Ventilation system for automobile crankcase Download PDFInfo
- Publication number
- CN201826925U CN201826925U CN2010205703265U CN201020570326U CN201826925U CN 201826925 U CN201826925 U CN 201826925U CN 2010205703265 U CN2010205703265 U CN 2010205703265U CN 201020570326 U CN201020570326 U CN 201020570326U CN 201826925 U CN201826925 U CN 201826925U
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- Prior art keywords
- crankcase
- air
- pressure
- ventilation system
- automobile
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Abstract
The utility model provides a ventilation system for an automobile crankcase, which belongs to the technical field of automobiles and solves the problems of easy coagulation and clogging and even incapability of starting the engine in the existing air intake system of an engine. The ventilation system for the automobile crankcase comprises an air damper and an intake manifold, wherein an air filter is connected with the air damper, the intake manifold and the crankcase through a ventilating pipe; a one-way valve used for discharging waste gas in the crankcase is arranged between the crankcase and the intake manifold, a one-way electromagnetic valve used for replenishing air pressure for the interior of the crankcase is arranged between the crankcase and the ventilating pipe communicating the air filter with the air damper, the crankcase is also provided with a pressure sensor used for measuring the internal pressure of the crankcase, and the pressure sensor and the one-way electromagnetic valve are respectively connected with an electronic control unit. The ventilation system for the automobile crankcase can prevent oil-gas mixture in the crankcase from reversely flowing into and being coagulated in a corrugated pipe, thus achieving the purposes of opening the air damper, causing air intake to be smooth and preventing influence on the starting of the automobile.
Description
Technical field
The utility model belongs to automobile technical field, relates to a kind of engine crankcase of petrol engine, particularly a kind of automobile crane box ventilation system.
Background technique
At present, vehicle has become the traffic tool indispensable in people's daily life, and along with development of science and technology, the structure of vehicle each side, performance are compact, excellent more, thereby the using effect of high-quality is provided for people.
Wherein engine system is the core in the automobile, the crankcase ventilation system of motor is a kind ofly to import in the gas handling system remaining in inner waste gas in the engine combustion process, simultaneously ozone is imported to crankcase and carry out gas exchange, thereby carry out in-cylinder combustion once more, realization prevents that imperfect combustion waste gas from making the machine oil in the crankcase rotten, is a kind of device that improves burning and discharging.
For example, Chinese patent literature once disclosed a kind of engine crankshaft ventilation system [China Patent No.: ZL200510094168.4; Notice of authorization number: CN1924308A], comprise PCV valve, deaerator and pipeline; The oil gas of drawing from crankcase valve chamber cover cap enters the deaerator separation, and the profit after the separation enters oil sump; Gas after the separation divides two circuits by three-way pipe, and when low engine speed, gas enters inlet manifold inside by the PCV valve, and an one-way valve is installed between inlet manifold and deaerator; When high engine speeds, gas enters pressurized machine front tracheae, and an one-way valve is installed between pressurized machine front tracheae and deaerator.
Have only in the above-mentioned engine crankshaft ventilation system between crankcase and the intake manifold and adopt one-way valve, the flow direction of control crank case gases, under motor exceptional operating conditions (operating mode such as low-speed big), pressure in the crankcase raises, when its pressure surpassed certain limit, the fuel-air mixture in it just can enter into gas handling system by air vent, easily produced the obstruction of condensing, can cause air inlet not smooth, even motor can't start.
Summary of the invention
The purpose of this utility model is the problems referred to above that exist at existing technology, proposes a kind of by flowing between control crankcase and the breathing pipe, thereby prevent the automobile crane box ventilation system that the interior fuel-air mixture of crankcase leaks.
The purpose of this utility model can realize by following technical proposal: a kind of automobile crane box ventilation system, be located between the engine crankcase and air-strainer of automobile, comprise closure and intake manifold, by breathing pipe with described air-strainer and closure, intake manifold and crankcase couple together, also be provided with the one-way valve that is used to discharge waste gas in the crankcase between above-mentioned crankcase and the intake manifold, it is characterized in that, be provided with between described crankcase and the breathing pipe that is communicated with air-strainer and closure and be used for to the inner unidirectional electrical magnet valve that replenishes air pressure of crankcase, also be provided with the pressure transducer that is used to measure the crankcase internal pressure on the described crankcase, described pressure transducer all is connected with an electronic control unit with described unidirectional electrical magnet valve, air pressure in described pressure transducer detects described crankcase is during less than setting value, make described unidirectional electrical magnet valve be in opening state by this electronic control unit, air pressure in described pressure transducer detects described crankcase makes described unidirectional electrical magnet valve be in closed condition by this electronic control unit during greater than setting value.
Waste gas in the crankcase of this automobile crane box ventilation system enters in the intake manifold by one-way valve, and it mixes with the fresh air that is entered intake manifold by closure, and the mixed gas circulation of this formation enters in the crankcase burns once more; Air pressure in pressure transducer detects crankcase greater than setting value after, unidirectional closed electromagnetic valve, thereby prevent that fuel-air mixture in the crankcase from entering the breathing pipe between air-strainer and the closure and condense, and causes air inlet not smooth between this breathing pipe and closure; Air pressure in pressure transducer detects crankcase less than setting value after, the unidirectional electrical magnet valve is opened, make fresh air enter crankcase by breathing pipe, change the gas composition in the crankcase, prevent the machine oil premature aging, balance crankshaft case pressure prevents that extraneous dust is inhaled into crankcase by oil sealing and forms greasy filth simultaneously.
In above-mentioned automobile crane box ventilation system, described breathing pipe is a bellows.Bellows has the buckle fold part, and it is flexible largely that it can be carried out in the vibrations that vehicle driving produces, thereby improve usability.
In above-mentioned automobile crane box ventilation system, described one-way valve is mechanical one-way valve.
In above-mentioned automobile crane box ventilation system, described setting value is the force value that is slightly less than atmospheric pressure.Gas occurs a part of pressure loss by the external world after by empty filter, so the air pressure in the bellows between air-strainer and the closure is the force value that is slightly less than atmospheric pressure.
Compared with prior art, between crankcase and the bellows that is communicated with air-strainer and closure the unidirectional electrical magnet valve is set in this automobile crane box ventilation system, when being implemented in the crankcase internal air pressure and being lower than atmospheric gas pressure, make fresh air enter crankcase and change its interior gas composition, prevent the machine oil premature aging, balance crankshaft case pressure prevents that extraneous dust is inhaled into crankcase by oil sealing and forms greasy filth simultaneously; When the crankcase internal air pressure is higher than atmospheric gas pressure, prevent that fuel-air mixture adverse current in the crankcase from entering corrugated tube and condense between bellows and closure, cause closure not open, air inlet is not smooth, influences vehicle launch.
Description of drawings
Fig. 1 is the schematic flow sheet of this automobile crane box ventilation system.
Among the figure, 1, air-strainer; 2, closure; 3, intake manifold; 4, mechanical one-way valve; 5, crankcase; 6, unidirectional electrical magnet valve; 7, pressure transducer; 8, electronic control unit.
Embodiment
Below be specific embodiment of the utility model and in conjunction with the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
As shown in Figure 1, this automobile crane box ventilation system is located between the engine crankcase 5 and air-strainer 1 of automobile, and it comprises closure 2 and intake manifold 3.
Be communicated with by bellows between air-strainer 1 and the closure 2, closure 2 all directly is connected with intake manifold 3, intake manifold 3 and crankcase 5.Bellows has the part of buckle fold, and it is flexible largely that it can be carried out in the vibrations that vehicle driving produces, thereby improve usability.
Be provided with mechanical one-way valve 4 between crankcase 5 and the intake manifold 3, mechanical one-way valve 4 can make the waste gas in the crankcase 5 be discharged in the intake manifold 3, and the gas in the intake manifold 3 but can not be gone in the crankcase 5 by this valve adverse current.Be provided with unidirectional electrical magnet valve 6 between crankcase 5 and the bellows that is communicated with air-strainer 1 and closure 2, also be provided with the pressure transducer 7 that to measure crankcase 5 internal pressures on the crankcase 5, form electrical connection by an electronic control unit 8 (ECU) between pressure transducer 7 and the unidirectional electrical magnet valve 6.Air pressure in pressure transducer 7 detects crankcase 5 is during less than the setting value of atmospheric gas pressure, make unidirectional electrical magnet valve 6 be in opening state by this electronic control unit 8 (ECU), air pressure in pressure transducer 7 detects crankcase 5 makes unidirectional electrical magnet valve 6 be in closed condition by this electronic control unit 8 (ECU) during greater than the setting value of atmospheric gas pressure.
When engine operation, air enters in the motor and burns, and the waste gas in the Rear Crank Case 5 promotes to open mechanical one-way valve 4 under the effect of draught head, then enter in the intake manifold 3; Fresh air is flowed in the intake manifold 3 in turn by air-strainer 1, bellows, closure 2 under the suction of motor simultaneously, make the waste gas in the intake manifold 3 mix the formation mixed gas with fresh air, this mixed gas circulation enters in the crankcase 5 burns once more.Air pressure in pressure transducer 7 detects crankcase 5 less than the atmospheric pressure in the bellows between air-strainer 1 and the closure 2 after, it passes to electronic control unit 8 (ECU) feedback signal, send control signal by electronic control unit 8 (ECU) and open unidirectional electrical magnet valve 6, fresh air is replenished enter in the crankcase 5; Air pressure in pressure transducer 7 detects crankcase 5 greater than the atmospheric pressure in the bellows between air-strainer 1 and the closure 2 after, it passes to electronic control unit 8 (ECU) feedback signal, send control signal by electronic control unit 8 (ECU) and close unidirectional electrical magnet valve 6, prevent that the fuel-air mixture in the crankcase 5 from entering bellows.
Specific embodiment described herein only is that the utility model spirit is illustrated.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Although this paper has used air-strainer 1 morely; Closure 2; Intake manifold 3; Machinery one-way valve 4; Crankcase 5; Unidirectional electrical magnet valve 6; Pressure transducer 7; Electronic control unit 8 terms such as grade, but do not get rid of the possibility of using other term.Using these terms only is in order to describe and explain essence of the present utility model more easily; They are construed to any additional restriction all is contrary with the utility model spirit.
Claims (4)
1. automobile crane box ventilation system, be located between the engine crankcase (5) and air-strainer (1) of automobile, comprise closure (2) and intake manifold (3), by breathing pipe with described air-strainer (1) and closure (2), intake manifold (3) and crankcase (5) couple together, also be provided with the one-way valve that is used to discharge the interior waste gas of crankcase (5) between above-mentioned crankcase (5) and the intake manifold (3), it is characterized in that, be provided with between described crankcase (5) and the breathing pipe that is communicated with air-strainer (1) and closure (2) and be used for to the inner unidirectional electrical magnet valve (6) that replenishes air pressure of crankcase (5), also be provided with the pressure transducer (7) that is used to measure crankcase (5) internal pressure on the described crankcase (5), described pressure transducer (7) and described unidirectional electrical magnet valve (6) all are electrically connected with an electronic control unit (8), air pressure in described pressure transducer (7) detects described crankcase (5) is during less than setting value, make described unidirectional electrical magnet valve (6) be in opening state by this electronic control unit (8), air pressure in described pressure transducer (7) detects described crankcase (5) makes described unidirectional electrical magnet valve (6) be in closed condition by this electronic control unit (8) during greater than setting value.
2. automobile crane box ventilation system according to claim 1 is characterized in that, described breathing pipe is a bellows.
3. automobile crane box ventilation system according to claim 1 is characterized in that, described one-way valve is mechanical one-way valve (4).
4. according to claim 1 or 2 or 3 described automobile crane box ventilation systems, it is characterized in that described setting value is the force value that is slightly less than atmospheric pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205703265U CN201826925U (en) | 2010-10-21 | 2010-10-21 | Ventilation system for automobile crankcase |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205703265U CN201826925U (en) | 2010-10-21 | 2010-10-21 | Ventilation system for automobile crankcase |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201826925U true CN201826925U (en) | 2011-05-11 |
Family
ID=43965467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205703265U Expired - Fee Related CN201826925U (en) | 2010-10-21 | 2010-10-21 | Ventilation system for automobile crankcase |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201826925U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102759447A (en) * | 2012-07-18 | 2012-10-31 | 重庆长安志阳汽车电气有限责任公司 | Endurance test system for PCV (positive crankcase ventilation) valves |
| CN103032131A (en) * | 2011-09-29 | 2013-04-10 | 现代自动车株式会社 | Structure for preventing surge of 2-cylinder engine |
| CN103670828A (en) * | 2012-09-14 | 2014-03-26 | 福特环球技术公司 | Crankcase integrity breach detection |
| CN108331685A (en) * | 2017-01-18 | 2018-07-27 | 福特环球技术公司 | Method for the monitoring component service life |
| CN111520212A (en) * | 2020-04-30 | 2020-08-11 | 广西玉柴机器股份有限公司 | Method for preventing water vapor of crankcase ventilation system from condensing |
| CN112282891A (en) * | 2019-07-25 | 2021-01-29 | 长城汽车股份有限公司 | Crankcase ventilation control method and crankcase ventilation system |
| CN113969810A (en) * | 2021-11-15 | 2022-01-25 | 潍柴动力股份有限公司 | Method for preventing engine oil from emulsifying and engine |
| CN114320529A (en) * | 2021-12-31 | 2022-04-12 | 中国第一汽车股份有限公司 | Crankcase ventilation system, vehicle and control method of crankcase ventilation system |
-
2010
- 2010-10-21 CN CN2010205703265U patent/CN201826925U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103032131A (en) * | 2011-09-29 | 2013-04-10 | 现代自动车株式会社 | Structure for preventing surge of 2-cylinder engine |
| CN102759447A (en) * | 2012-07-18 | 2012-10-31 | 重庆长安志阳汽车电气有限责任公司 | Endurance test system for PCV (positive crankcase ventilation) valves |
| CN103670828A (en) * | 2012-09-14 | 2014-03-26 | 福特环球技术公司 | Crankcase integrity breach detection |
| CN103670828B (en) * | 2012-09-14 | 2018-01-19 | 福特环球技术公司 | Crankcase integrity leak detects |
| CN108331685A (en) * | 2017-01-18 | 2018-07-27 | 福特环球技术公司 | Method for the monitoring component service life |
| CN108331685B (en) * | 2017-01-18 | 2021-12-07 | 福特环球技术公司 | Method for monitoring the life of a component |
| CN112282891A (en) * | 2019-07-25 | 2021-01-29 | 长城汽车股份有限公司 | Crankcase ventilation control method and crankcase ventilation system |
| CN112282891B (en) * | 2019-07-25 | 2022-02-22 | 长城汽车股份有限公司 | Crankcase ventilation control method and crankcase ventilation system |
| CN111520212A (en) * | 2020-04-30 | 2020-08-11 | 广西玉柴机器股份有限公司 | Method for preventing water vapor of crankcase ventilation system from condensing |
| CN113969810A (en) * | 2021-11-15 | 2022-01-25 | 潍柴动力股份有限公司 | Method for preventing engine oil from emulsifying and engine |
| CN114320529A (en) * | 2021-12-31 | 2022-04-12 | 中国第一汽车股份有限公司 | Crankcase ventilation system, vehicle and control method of crankcase ventilation system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110511 Termination date: 20171021 |