CN102482962A - Method for controlling stoppage of reduction of blow-by gas in starting - Google Patents
Method for controlling stoppage of reduction of blow-by gas in starting Download PDFInfo
- Publication number
- CN102482962A CN102482962A CN2010800274533A CN201080027453A CN102482962A CN 102482962 A CN102482962 A CN 102482962A CN 2010800274533 A CN2010800274533 A CN 2010800274533A CN 201080027453 A CN201080027453 A CN 201080027453A CN 102482962 A CN102482962 A CN 102482962A
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- CN
- China
- Prior art keywords
- pipeline
- gas leakage
- gas
- open
- starting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M13/00—Crankcase ventilating or breathing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M13/00—Crankcase ventilating or breathing
- F01M13/02—Crankcase ventilating or breathing by means of additional source of positive or negative pressure
- F01M13/021—Crankcase ventilating or breathing by means of additional source of positive or negative pressure of negative pressure
- F01M13/022—Crankcase ventilating or breathing by means of additional source of positive or negative pressure of negative pressure using engine inlet suction
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
- F02M25/08—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding fuel vapours drawn from engine fuel reservoir
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M13/00—Crankcase ventilating or breathing
- F01M2013/0038—Layout of crankcase breathing systems
- F01M2013/005—Layout of crankcase breathing systems having one or more deoilers
- F01M2013/0061—Layout of crankcase breathing systems having one or more deoilers having a plurality of deoilers
- F01M2013/0066—Layout of crankcase breathing systems having one or more deoilers having a plurality of deoilers in parallel
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
- Supplying Secondary Fuel Or The Like To Fuel, Air Or Fuel-Air Mixtures (AREA)
Abstract
Disclosed is a control method for blow-by gas recovery stoppage during operation in an engine (1) provided with a blow-by gas inlet (5), which aspirates blow-by gas containing DME vapor into an air inlet (3), and a release line (6), which releases the aforementioned blow-by gas into the atmosphere. Said method is provided with a discharge step (steps S2 and S3) closing the aforementioned blow-by gas inlet (5) and opening the aforementioned release line (6) before the engine (1) starts up, and a recovery step (steps S6 and S7) opening the aforementioned blow-by gas inlet (5) and closing the aforementioned release line (6) after the aforementioned engine (1) starts up (steps S4 and S5). While the aforementioned engine (1) is stopped, excluding the aforementioned discharge step (steps S2 and S3), the aforementioned blow-by gas inlet (5) and the aforementioned release line (6) are closed.
Description
Technical field
The present invention relates to a kind of motor, this motor is attracted in the air suction inlet through the gas leakage that will comprise the DME steam, thereby can reclaim said gas leakage.
Background technique
In the past, in the motor that acts as a fuel with DME (dimethyl ether), be attracted to the technology that reclaims this gas leakage in the air inlet through the gas leakage that will comprise the DME steam and be well known.In this motor, be provided with and be used for the gas leakage that produces in the motor is attracted to the gas leakage pipeline in the air suction inlet.Especially in order to prevent that gas leakage is discharged in the atmosphere, when engine stoping operation, the gas leakage pipeline is closed.When engine start, the gas leakage that is full of in the gas leakage pipeline can be inhaled in the cylinder.Here, because the cetane number of DME (dimethyl ether) is very high, so be very easy to catch fire.Therefore, spontaneous combustion can take place in the gas leakage that sucks in the cylinder, thereby causes when engine start, taking place detonation.
Put down in writing the technology that is used to avoid when engine start, taking place detonation in the patent documentation 1.In the diesel engine of patent documentation 1, on the gas leakage pipeline that gas leakage is attracted in the air suction inlet,, the open pipeline that gas leakage is discharged into the atmosphere is installed via three-way magnetic valve.Through the control of solenoid valve, pipeline switches with open pipeline connection and gas leakage pipeline and between air suction inlet is communicated with leaking gas.In engine operation process, gas leakage is attracted in the air suction inlet, when engine stoping operation, gas leakage is discharged in the atmosphere.Therefore, can prevent when engine start that gas leakage is trapped in the gas leakage pipeline.Thereby prevented when starting, to take place detonation.
Patent documentation 1: the Japan Patent Publication Laid-Open is put down the 10-339126 communique
Summary of the invention
In the patent documentation 1, when engine stoping operation, the gas leakage pipeline is communicated with open pipeline all the time.Therefore, DME can't arrive vapor liquid equilibrium, and DME can gasify from fuel injection orifice gradually.Thereby cause a large amount of DME fuel to be discharged in the atmosphere.Therefore, the object of the present invention is to provide a kind of technology that detonation can reduce the DME discharge amount that is discharged in the atmosphere again that takes place engine start can be prevented the time.
The controlling method that the first string of the present invention stops when providing a kind of the starting leaking gas and reclaims; This controlling method is used to possess the motor of gas leakage pipeline and open pipeline; The gas leakage that said gas leakage pipeline will comprise the DME steam is attracted in the air suction inlet; Said open pipeline is discharged into the atmosphere said gas leakage, and said controlling method comprises venting step and recycling step, wherein; Said venting step is before engine start, to close said gas leakage pipeline and open said open pipeline; Said recycling step is after said engine start, to open said gas leakage pipeline and close said open pipeline, when said motor is when said venting step shuts down in addition, closes said gas leakage pipeline and said open pipeline.
The described starting of the first string of the present invention controlling method that reclaims that the time stops to leak gas preferably can adopt following structure (1), (2).
(1), the moment of said engine start begins to carry out said recycling step after having passed through certain hour again.
(2) in the said venting step, after having opened said open pipeline, close said gas leakage pipeline again, in the said recycling step, after having opened said gas leakage pipeline, close said open pipeline again.
The present invention can prevent that motor from when starting detonation taking place, and can reduce the DME discharge amount that is discharged in the atmosphere.
Description of drawings
Fig. 1 is the sketch that expression comprises the motor of the pipeline that leaks gas.
Fig. 2 is that starting the time stops the control flow chart that to leak gas and reclaim.
Embodiment
Fig. 1 is the sketch that expression comprises the motor 1 of the pipeline 5 that leaks gas.Motor 1 is the diesel engine that acts as a fuel with DME.
Among Fig. 1, motor 1 comprises engine main body 2, air suction inlet 3, air outlet 4, gas leakage pipeline 5, open pipeline 6, starter 7, control gear 10, the first solenoid valve BV-1 and the second solenoid valve BV-2.
Engine main body 2 comprises the major component of motors such as piston, cylinder, crankcase.Be provided with bent axle 21, CKP 22, starter (starting motor) 7 in the engine main body 2.Engine main body 2 deacration suction ports 3, air outlet 4 and beyond the gas leakage pipeline 5, all the other are airtight structure.
Fig. 2 is that starting the time stops the control flow chart that to leak gas and reclaim.The control that control gear 10 stops in the time of can starting motor 1 leaking gas and reclaims.The control of reclaiming that stops to leak gas is a kind of sequence control.The control of reclaiming that when starting, stops to leak gas is the processing of carrying out following step S1～S8 successively.
When motor 1 shut down, the pipeline 5 that will leak gas was closed with open pipeline 6.Therefore, be full of the gas leakage that in engine main body 2, is produced in the gas leakage pipeline 5.At this moment, gas leakage pipeline 5 is airtight.Therefore, in case the gas leakage that is full of in the gas leakage pipeline 5 reaches vapor liquid equilibrium, will stop to produce gas leakage.
Be provided with the switch starter that is used to make motor 1 starting in the motor 1.In step S1, when control gear 10 detects switch starter when being pressed, just begin to stop the control of leaking gas and reclaiming.
In step S2, control gear 10 is opened the second solenoid valve BV-2.In step S3, control gear 10 cuts out the first solenoid valve BV-1.
Step S2 and S3 are the venting steps of closing gas leakage pipeline 5 and opening open pipeline 6.In the venting step, the gas leakage in the gas leakage pipeline 5 is discharged in the atmosphere.
In step S4, control gear 10 makes starter 7 startings.Through the starting of starter 7, the bent axle in the engine main body 2 begins to rotate.Thereby pilot engine 1.The difference in the moment of starter 7 starting and the moment of motor 1 starting is for example less than time of 1 second.
In step S5, control gear 10 is waited for the recycling step of stating after carrying out (step S6, S7) in the stipulated time in the moment of starting from motor 1.In this mode of execution, the stipulated time is 15 seconds.That is, control gear 10 was waited for always and is carried out recycling step before the rotating speed of bent axle reaches the rotating speed of regulation.
In step S6, open the first solenoid valve BV-1.In step S3, control gear 10 cuts out the second solenoid valve BV-2.
Step S6 and S7 are the recycling steps of opening gas leakage pipeline 5 and closing open pipeline 6.In recycling step, the gas leakage in the gas leakage pipeline 5 is sucked in the air suction inlet 3.The DME fuel that the gas leakage that sucks is provided in motor 1 operation process in the cylinder of engine main body 2 burns.That is, in recycling step, will leak gas and reclaim and become fuel.
In step S8, control gear 10 finishes when starting, to stop the control of leaking gas and reclaiming.
Control through when starting, stopping to leak gas and reclaiming has following effect and effect.In the venting step, the gas leakage in the gas leakage pipeline 5 is discharged in the atmosphere.Then,, wait for always and carry out recycling step, therefore, in the starting process of motor 1, can the gas leakage recovery not become fuel owing to before motor 1 starting.That is, though motor in running but also be in when starting, gas leakage is reclaimed and is also stopped.Thereby prevent when starting, to take place detonation.Then, carry out recycling step in motor 1 starting back.Therefore, gas leakage stops to be discharged in the atmosphere.In addition, because when engine stoping operation, gas leakage pipeline 5 is closed, so gas leakage can stop to be discharged in the atmosphere.Thereby stopping hourglass air pipe 5 with motor 1 is that situation about opening is compared all the time, can reduce the DME discharge amount that is discharged in the atmosphere.
The control of reclaiming that stops during starting leaking gas is before the process stipulated time in the moment of motor 1 starting, all waits for always and carries out recycling step.That is, before the slow-roll stabilization of motor 1, can prevent gas leakage is sucked air suction inlet.Thereby, can prevent when starting, to take place detonation reliably.
In addition, the time of wait for carrying out recycling step is except self-starting rises through the stipulated time constantly, also can be that the rotating speed to motor 1 reaches till the regulation rotating speed.Control gear 10 is based on the checkout value of CKP 22, and the rotating speed that can detect bent axle has reached the regulation rotating speed.
Particularly in the venting step, after having opened open pipeline 6, close gas leakage pipeline 5 again.Therefore, gas leakage can not drain in the air suction inlet 3, thereby can be discharged in the atmosphere reliably.In addition, in recycling step, after having opened gas leakage pipeline 5, close open pipeline 6 again.Therefore, gas leakage can not drain in the atmosphere, thereby can be inhaled into reliably in the air suction inlet 3.
Label declaration
1 motor
2 engine main bodies
5 gas leakage pipelines
6 open pipelines
7 starters
21 bent axles
BV-1 first solenoid valve
BV-2 second solenoid valve
Claims (3)
1. controlling method that stops when starting leaking gas and reclaiming; This controlling method is used to possess the motor of gas leakage pipeline and open pipeline; The gas leakage that said gas leakage pipeline will comprise the DME steam is attracted in the air suction inlet; Said open pipeline is discharged into the atmosphere said gas leakage, and said controlling method is characterised in that, comprising:
Venting step, this venting step are before engine start, to close said gas leakage pipeline and open said open pipeline; And
Recycling step, this recycling step are after said engine start, to open said gas leakage pipeline and close said open pipeline,
When said motor shuts down, close said gas leakage pipeline and said open pipeline beyond said venting step.
2. starting as claimed in claim 1 the time stops the controlling method of leaking gas and reclaiming, it is characterized in that,
, the moment of said engine start begins to carry out said recycling step after having passed through certain hour again.
3. starting as claimed in claim 1 the time stops the controlling method of leaking gas and reclaiming, it is characterized in that,
In the said venting step, after having opened said open pipeline, close said gas leakage pipeline again,
In the said recycling step, after having opened said gas leakage pipeline, close said open pipeline again.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009146621A JP5259504B2 (en) | 2009-06-19 | 2009-06-19 | Blow-by gas reduction stop control method at startup |
| JP2009-146621 | 2009-06-19 | ||
| PCT/JP2010/060169 WO2010147132A1 (en) | 2009-06-19 | 2010-06-16 | Control method for blow-by gas recovery stoppage during startup |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102482962A true CN102482962A (en) | 2012-05-30 |
| CN102482962B CN102482962B (en) | 2014-01-29 |
Family
ID=43356448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201080027453.3A Expired - Fee Related CN102482962B (en) | 2009-06-19 | 2010-06-16 | Method for controlling stoppage of reduction of blow-by gas in starting |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP5259504B2 (en) |
| KR (1) | KR101269361B1 (en) |
| CN (1) | CN102482962B (en) |
| WO (1) | WO2010147132A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6010301B2 (en) * | 2012-01-20 | 2016-10-19 | 日野自動車株式会社 | Closed breather system |
| EP3625447A1 (en) | 2017-05-16 | 2020-03-25 | Volvo Truck Corporation | A system for ventilation of a crankcase |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10339126A (en) * | 1997-06-05 | 1998-12-22 | Nkk Corp | Diesel engine for dimethyl ether |
| CN101109343A (en) * | 2006-07-20 | 2008-01-23 | 株式会社丰田自动织机 | Fuel supply system for DME engine |
| JP2009085131A (en) * | 2007-10-01 | 2009-04-23 | Toyota Motor Corp | Control device of internal combustion engine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3755495B2 (en) | 2002-08-09 | 2006-03-15 | マツダ株式会社 | Engine exhaust purification system |
-
2009
- 2009-06-19 JP JP2009146621A patent/JP5259504B2/en active Active
-
2010
- 2010-06-16 CN CN201080027453.3A patent/CN102482962B/en not_active Expired - Fee Related
- 2010-06-16 KR KR1020117028698A patent/KR101269361B1/en not_active IP Right Cessation
- 2010-06-16 WO PCT/JP2010/060169 patent/WO2010147132A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10339126A (en) * | 1997-06-05 | 1998-12-22 | Nkk Corp | Diesel engine for dimethyl ether |
| CN101109343A (en) * | 2006-07-20 | 2008-01-23 | 株式会社丰田自动织机 | Fuel supply system for DME engine |
| JP2009085131A (en) * | 2007-10-01 | 2009-04-23 | Toyota Motor Corp | Control device of internal combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102482962B (en) | 2014-01-29 |
| JP2011001909A (en) | 2011-01-06 |
| KR20120023730A (en) | 2012-03-13 |
| WO2010147132A1 (en) | 2010-12-23 |
| JP5259504B2 (en) | 2013-08-07 |
| KR101269361B1 (en) | 2013-05-29 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: Osaka, Japan Patentee after: Yangma Power Technology Co.,Ltd. Address before: Osaka Japan Patentee before: YANMAR Co.,Ltd. |
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| CP03 | Change of name, title or address | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140129 |
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| CF01 | Termination of patent right due to non-payment of annual fee |