WO2009014772A1 - Crankcase ventilation system with pumped scavenged oil - Google Patents
Crankcase ventilation system with pumped scavenged oil Download PDFInfo
- Publication number
- WO2009014772A1 WO2009014772A1 PCT/US2008/056598 US2008056598W WO2009014772A1 WO 2009014772 A1 WO2009014772 A1 WO 2009014772A1 US 2008056598 W US2008056598 W US 2008056598W WO 2009014772 A1 WO2009014772 A1 WO 2009014772A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- oil
- crankcase
- ventilation system
- separator
- crankcase ventilation
- Prior art date
Links
Classifications
-
- 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
- F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
-
- 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
- F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
- F01M2013/0433—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil with a deflection device, e.g. screen
-
- 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
- F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
- F01M2013/0438—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil with a filter
-
- 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
- F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
- F01M2013/0488—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil with oil trap in the return conduit to the crankcase
Definitions
- the invention relates to crankcase ventilation systems for internal combustion engines.
- Crankcase ventilation systems for internal combustion engines are known in the prior art.
- An internal combustion engine generates blowby gas in a crankcase containing engine oil and oil aerosol.
- An air/oil separator has an inlet receiving blowby gas and oil aerosol from the crankcase, and an air outlet discharging clean blowby gas to the atmosphere or back to the engine air intake, and an oil outlet discharging scavenged separated oil back to the crankcase.
- the separator has a pressure drop thereacross such that the pressure at its inlet and in the crankcase is higher than the pressure at the separator air outlet and oil outlet.
- the pressure differential between the crankcase and the oil outlet of the separator normally tends to cause backflow of oil from the higher pressure crankcase to the lower pressure oil outlet.
- the present invention provides another solution to the above noted problem in a simple and effective manner.
- FIG. 1 is a schematic illustration of a crankcase ventilation system for an internal combustion engine in accordance with the invention.
- FIG. 2 is fluid flow diagram illustrating operation of a component of Fig. 1.
- Fig. 3 is like Fig. 1 and shows another embodiment.
- Fig. 4 is like Fig. 1 and shows another embodiment.
- Fig. 5 is like Fig. 1 and shows another embodiment.
- Fig. 6 is an enlarged partial sectional view of a portion of Fig. 1 and showing a further embodiment.
- Fig. 7 is an enlarged partial sectional view of a portion of Fig. 1 and showing a further embodiment.
- FIG. 1 shows a crankcase ventilation system 20 for an internal combustion engine 22 generating blowby gas in a crankcase 24 containing engine oil 26 and oil aerosol.
- the system includes an air/oil separator 28 having an inlet 30 receiving blowby gas and oil aerosol from the crankcase, and having an air outlet 32 discharging clean blowby gas to the atmosphere or returned to the engine air intake, and having an oil outlet 34 discharging scavenged separated oil back to the crankcase, all as is known.
- air/oil separator 28 is an inertial impactor, for example as in the following incorporated U.S. Patents: 6,247,463; 6,290,738; 6,354,283; 6,478,109.
- the system further includes a jet pump 36 pumping scavenged separated oil from oil outlet 34 to crankcase 24.
- Jet pumps are known in the prior art, for example: "The Design of Jet Pumps", Gustav Flugel, National Advisory Committee for Aeronautics, Technical Memorandum No. 982, 1939; "Jet-Pump Theory and Performance with Fluids of High Viscosity", R.G. Cunningham, Transactions of the ASME, November 1957, pages 1807-1820.
- Separator 28 has a pressure drop thereacross such that the pressure at inlet 30 and in crankcase 24 is higher than the pressure at air outlet 32 and at oil outlet 34.
- the pressure differential between crankcase 24 and oil outlet 34 normally tends to cause backflow of oil from the higher pressure crankcase 24 to the lower pressure oil outlet 34.
- oil outlet 34 is located at a given elevation above crankcase 24 (typically greater than about 15 inches, though the dimensions vary) and a vertical connection tube is provided therebetween with a check valve, such that a gravity head develops and can overcome the noted pressure differential.
- jet pump 36 in the present system supplies pumping pressure greater than the noted pressure differential to overcome the noted backflow tendency and instead cause suctioning of scavenged separated oil from oil outlet 34 and pumping of same to crankcase 24 via connection conduit 38.
- a jet pump is operated by a motive fluid directed through a reduced diameter jet nozzle 40 into a larger diametered mixing bore 42 having a suction chamber 44 therearound.
- jet pump 36 is a fluid-driven jet pump having a pressurized drive input at 40 receiving pressurized motive fluid from a source of pressurized fluid, a suction input at 44 receiving separated oil from oil outlet 34 of separator 28, and an output at 42 delivering jet-pumped oil to crankcase 24 via conduit 38.
- the engine includes an oil circulation system 46 circulating engine oil 26 from crankcase 24 through an oil pump 48 delivering pressurized oil through filter 50 to selected engine components such as piston 52 and crankshaft 54 and then back to crankcase 24.
- jet pump 36 is an oil- driven jet pump having a pressurized drive input via conduit 56 receiving pressurized motive oil from oil pump 48, a suction input at 44 receiving separated oil from oil outlet 34 of separator 28, and an output at 42 delivering jet-pumped oil via conduit 38 to crankcase 24.
- separator 28 includes an inertial impactor 60, as noted above.
- separator 28 includes a coalescer 62, for example as shown in the above noted incorporated patents.
- separator 28 includes both inertial impactor 60 and coalescer 62, for example as shown in the above noted incorporated patents.
- inertial impactor 62 is upstream of coalescer 60. Separated oil from coalescer 62 drains to oil outlet 34 of the separator.
- separated oil from impactor 60 drains through coalescer 62 as shown in dashed line at 64 and then to oil outlet 34 of the separator.
- separator 28 has an auxiliary drain channel 66 draining separated oil from impactor 60 to oil outlet 34 of the separator and bypassing coalescer 62.
- Auxiliary drain channel 66 has a flow-limiting bleed orifice 68 therein.
- separator 28 has a second oil outlet at 66 draining separated oil from impactor 60 to suction input 44 of the jet pump as shown in dashed line at 70.
- separator 28 has a second oil outlet at 66 draining separated oil from impactor 60 back to crankcase 24 as shown in dashed line at 72, which may require a gravity head, as above noted, which separated oil from impactor 60 drains through second outlet 66 and passage 72 to crankcase 24 by gravity, without passage through jet pump 36 pumping separated oil from first oil outlet 34 of separator 28.
- Fig. 5 shows a further embodiment and uses like reference numerals from above where appropriate to facilitate understanding.
- Jet pump 36a is an air-driven jet pump having a pressurized drive input 40a receiving pressurized motive air at conduit 74 from a compressed air source, to be described, a suction input at 44a receiving separated oil from oil outlet 34 of separator 28, and an output 42a delivering jet-pumped oil and motive air via conduit 38a to crankcase 24.
- engine 22 has a turbocharger 76 delivering pressurized air for combustion.
- the noted compressed air source is provided by turbocharger 76, and pressurized drive input 40a of jet pump 36a receives pressurized motive air from turbocharger 76 via air line 74.
- Fig. 6 shows another embodiment and uses like reference numerals from above where appropriate to facilitate understanding.
- Jet pump 36b is formed in wall surface 80 and includes a pressurized drive input 40b receiving pressurized motive fluid from a source of pressurized fluid, e.g. oil pump 48 or turbocharger 76, a suction input 44b receiving separated oil from oil outlet 34b provided by a drain passage 84 through wall 80, and an output 42b like mixing bore 42a and 42 and of greater diameter than drive input 40b and delivering jet-pumped oil to the crankcase via conduit 38b as above.
- the pressurized motive fluid is selected from the group consisting of oil and air
- the source of pressurized fluid is selected from the group consisting of an oil pump, a turbocharger, an air compressor, and a tank of compressed air.
- FIG. 7 shows another embodiment and uses like reference numerals from above where appropriate to facilitate understanding.
- Separator 28 has a lower collection sump at 82c.
- the system includes a turbine 86 driven by jet 36c, and a mechanical pump 88 driven by turbine 86 and suctioning oil from oil outlet 34c of separator 28 and pumping same at pump outlet 90 to crankcase 24, as above.
- the turbine is located in such valvehead beneath the valvehead cover.
- the turbine is located in the crankcase.
- Various turbines may be used, including spiral vane turbines, Pelton turbines, Turgo turbines, etc.
- Various pumps may be used, including simple mechanical pumps, positive displacement gear pumps, etc.
- various connections may be used between the turbine and the pump, such as a speed reduction transmission, a rotating shaft, etc.
- various pressurized motive fluids may be used for the jet pump, including oil, Figs. 1, 3, 4, and air, Fig. 5.
- the source of pressurized fluid can be an oil pump, e.g. 48, Figs. 1, 3, 4, a turbocharger 76, Fig. 5, an air compressor, e.g. as shown in dashed line at 94 in Fig. 5, a tank of compressed air, e.g. as shown in dashed line at 96 in Fig. 5, and other sources.
- Other variations include multiple jet nozzles 40 feeding a single mixing bore 42.
- jet nozzle 40 has a diameter of 0.3 mm (millimeters)
- mixing bore 42 has a diameter of 1 mm
- the length of mixing bore 42 before it starts to diverge at 98 is 4 mm
- the diameter of suction port 44 is 1 mm
- 40 psi pounds per square inch
- motive pressure oil at 180 0 F (Fahrenheit)
- suction liquid source at 34 at 100 0 F and a pressure of about minus 15 inches of water (-0.5 psi) relative to the crankcase pressure at 24, with motive flow at about 0.8 mL/s (milliliters per second) and entrained suction flow at about 0.3 mL/s.
- the predicted “stall suction” (the pressure in suction port 44 at which the jet pump can no longer pull fluid from such suction port) is about 112 inches of water which is well beyond the typical 5 to 15 inches of water needed for such application.
- Impactor and coalescer separators have been shown, and other types of aerosol separation devices may be used, including electrostatic separators, cyclones, axial flow vortex tubes, powered centrifugal separators, motor or turbine- driven cone-stack centrifuges, spiral vane centrifuges, rotating coalescers, and other types of separators known for usage in engine blowby aerosol separation.
- the scavenged separated oil may be returned directly back to the crankcase at conduit 38, or may be indirectly returned to the crankcase, for example the scavenged separated oil may be returned initially to the valve cover area, as shown in dashed line at 100, Fig. 5, which oil then flows back to the crankcase.
- Claim limitations regarding a jet pump pumping scavenged separated oil from the oil outlet of the separator to the crankcase may thus include flow path segments through other portions of the engine prior to reaching the crankcase.
- crankcase includes not only the lower region of the engine collecting oil at 26 but also other sections of the engine in communication therewith, including sections at the noted pressure causing the noted backflow tendency, which backflow tendency pressure is overcome by the jet pump.
- the motive flow at elevated pressure provided by the jet pump creates a high velocity small diameter jet 40 within a larger diameter mixing bore 42, effectively converting the jet kinetic energy into pumping power, as is known.
- the motive source 40 and/or the suction source 44 may need screen filter protection to prevent plugging of the very small diameters, e.g. less than 1 mm.
- Fig. 6 may be desirable to provide a jet impinging on an orifice/groove integrally formed in the sump housing wall to create the desired extraction suction.
- another source may be the engine's air intake manifold, whereby compressed air may be routed from the intake manifold and ducted into the crankcase ventilation system to provide the motive fluid for the jet pump.
- Molded-in channels may be used to route air from the manifold through the valve cover and into the crankcase ventilation system.
- the scavenged separated oil may be ducted from the jet pump output 42 to the underside of the valve cover, e.g. as shown at 100, for return to the crankcase.
- a jet pump is provided with a mixing bore 42 having a larger diameter than jet 40 in the case of round bores, and a greater cross-sectional area in the case of round or non-round bores or multiple jets 40.
- the cross-sectional area of mixing bore 42 may be the same as the cross-sectional area of jet 40, thus providing a jet pump which is a venturi with a smooth transition between jet 40 and mixing bore 42 and no step in diameter therebetween.
- This type of jet pump venturi relies on Bernoulli's principle to create suction at suction port 44.
- a jet pump with a larger area mixing bore 42 than jet 40 is preferred because it has higher pumping efficiency and capacity, i.e.
- a mixing bore 42 having a cross-sectional area slightly less than jet 40 may even be acceptable because of the noted low efficiency and low capacity requirements. Accordingly, the system may use a jet pump having a mixing bore 42 having a cross-sectional area greater than or substantially equal to the cross- sectional area of jet 40.
- the noted embodiments having the cross-sectional area of mixing bore 42 equal to or slightly less than (substantially equal to) jet 40 provide a venturi or venturi-like jet pump.
- the preferred jet pump has a mixing bore 42 with a cross-sectional area greater than jet 40 because of the noted higher efficiency and capacity.
- An area ratio up to about 25: 1 may be used in some embodiments, and in other embodiments an area ratio up to about 100: 1 (diameter ratio 10:1) may be used, though other area and diameter ratios are possible.
- the lower limit of a jet pump cross-sectional area of mixing bore 42 substantially equal to cross-sectional area of jet 40
- a mixing bore 42 having a greater cross-sectional area than jet 40 is preferred.
- one or more optional check valves 102 and 104, Fig. 5, are provided in the motive line 74 and/or the drain line 38a to prevent backflow in a condition (infrequent) of low or negative air supply pressure, e.g. when a truck is in a long down-hill run, where the turbo is idling.
- Check valve 102 is a oneway valve providing one-way flow as shown at arrow 106, and blocking reverse flow.
- Check valve 104 is a one-way valve permitting one-way flow as shown at arrow 108, and blocking reverse flow.
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2008800205292A CN101730787B (en) | 2007-07-26 | 2008-03-12 | Crankcase ventilation system with pumped scavenged oil |
DE112008001692.5T DE112008001692B4 (en) | 2007-07-26 | 2008-03-12 | Crankcase ventilation system |
BRPI0813536-3A2A BRPI0813536A2 (en) | 2007-07-26 | 2008-03-12 | Crankcase Ventilation System for Internal Combustion Engine |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/828,613 | 2007-07-26 | ||
US11/828,613 US7699029B2 (en) | 2007-07-26 | 2007-07-26 | Crankcase ventilation system with pumped scavenged oil |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2009014772A1 true WO2009014772A1 (en) | 2009-01-29 |
Family
ID=40281690
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2008/056598 WO2009014772A1 (en) | 2007-07-26 | 2008-03-12 | Crankcase ventilation system with pumped scavenged oil |
Country Status (5)
Country | Link |
---|---|
US (2) | US7699029B2 (en) |
CN (1) | CN101730787B (en) |
BR (1) | BRPI0813536A2 (en) |
DE (1) | DE112008001692B4 (en) |
WO (1) | WO2009014772A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010043060A1 (en) * | 2010-10-28 | 2012-05-03 | Mtu Friedrichshafen Gmbh | Crankcase and internal combustion engine |
EP2525055A3 (en) * | 2011-05-16 | 2014-11-05 | Bayerische Motoren Werke Aktiengesellschaft | Combustion engine |
Families Citing this family (53)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202005009990U1 (en) * | 2005-06-25 | 2006-11-02 | Hengst Gmbh & Co.Kg | Device for separating oil particles from the crankcase ventilation gas of an internal combustion engine |
CN100383365C (en) * | 2006-03-08 | 2008-04-23 | 无锡开普动力有限公司 | Air-exchanging structure of crank case of four-stroke engine |
CA2676569C (en) * | 2006-08-28 | 2011-06-21 | Honda Motor Co., Ltd. | Oil strainer structure of engine and oil return structure of engine |
US7699029B2 (en) * | 2007-07-26 | 2010-04-20 | Cummins Filtration Ip, Inc. | Crankcase ventilation system with pumped scavenged oil |
US7849841B2 (en) * | 2007-07-26 | 2010-12-14 | Cummins Filtration Ip, Inc. | Crankcase ventilation system with engine driven pumped scavenged oil |
DE102008019293A1 (en) * | 2008-04-16 | 2009-10-22 | Dichtungstechnik G. Bruss Gmbh & Co. Kg | Device for returning oil separated from blow-by gases and collected in a collecting space |
JP4933491B2 (en) * | 2008-06-17 | 2012-05-16 | 愛三工業株式会社 | Blow-by gas reduction device |
CN102596862B (en) * | 2009-05-15 | 2015-09-30 | 康明斯过滤Ip公司 | Surface coalescer |
DE102009024701B4 (en) * | 2009-06-12 | 2016-05-04 | Mahle International Gmbh | Oil Mist Separators |
US8485145B2 (en) * | 2009-08-25 | 2013-07-16 | International Engine Intellectual Property Company, Llc. | Breather air—oil seperator |
PT104766A (en) | 2009-09-29 | 2011-03-29 | Univ Nova De Lisboa | DEVICE FOR PRODUCTION AND / OR STORAGE OF ENERGY BASED ON FIBERS AND FINE FILMS. |
JP5289276B2 (en) * | 2009-09-30 | 2013-09-11 | 愛三工業株式会社 | Blow-by gas reduction device |
US8470062B2 (en) * | 2010-01-11 | 2013-06-25 | Cummins Filtration Ip Inc. | Drain tube for gas-liquid separation systems |
US9194265B2 (en) | 2010-01-27 | 2015-11-24 | Cummins Filtration Ip, Inc. | Rotating separator with housing preventing separated liquid carryover |
US8893689B2 (en) | 2010-01-27 | 2014-11-25 | Cummins Filtration Ip, Inc. | Crankcase ventilation self-cleaning coalescer with intermittent rotation |
US8974567B2 (en) | 2010-01-27 | 2015-03-10 | Cummins Filtration Ip Inc. | Rotating coalescer with keyed drive |
US8940068B2 (en) | 2010-01-27 | 2015-01-27 | Cummins Filtration Ip Inc. | Magnetically driven rotating separator |
US8807097B2 (en) * | 2010-01-27 | 2014-08-19 | Cummins Filtration Ip Inc. | Closed crankcase ventilation system |
CN101787914A (en) * | 2010-03-15 | 2010-07-28 | 徐连奎 | Forced ventilation one-way valve for automotive engine |
SE534773C2 (en) * | 2010-04-09 | 2011-12-13 | Alfa Laval Corp Ab | Centrifugal separator located inside an internal combustion engine |
US8347865B2 (en) | 2011-05-09 | 2013-01-08 | Ford Global Technologies, Llc | System and method for returning oil separated from engine crankcase gases |
EP2586534B1 (en) * | 2011-10-24 | 2016-04-20 | Alfa Laval Corporate AB | A centrifugal separator, an internal combustion engine and centrifugal separator assembly and a method of separating contaminants from crankcase gas |
BR112014009743A2 (en) | 2011-11-04 | 2017-05-02 | Cummins Filtration Ip Inc | rotary separator for separating fluid from fluid mix |
WO2014022385A1 (en) * | 2012-07-31 | 2014-02-06 | Cummins Filtration Ip, Inc. | Methods and assemblies for separating liquid from a gas-liquid stream |
US9737835B2 (en) | 2012-07-31 | 2017-08-22 | Cummins Filtration Ip, Inc. | Methods and apparatuses for separating liquid particles from a gas-liquid stream |
US8992667B2 (en) | 2012-08-16 | 2015-03-31 | Cummins Filtration Ip, Inc. | Systems and methods for closed crankcase ventilation and air filtration |
US10058808B2 (en) | 2012-10-22 | 2018-08-28 | Cummins Filtration Ip, Inc. | Composite filter media utilizing bicomponent fibers |
CN103899379A (en) * | 2012-12-27 | 2014-07-02 | 现代自动车株式会社 | Oil filter system for vehicle |
WO2014160870A1 (en) | 2013-03-28 | 2014-10-02 | Cummins Filtration Ip, Inc. | Air-oil separator with jet-enhanced impaction and method associated therewith |
US9777562B2 (en) * | 2013-09-05 | 2017-10-03 | Saudi Arabian Oil Company | Method of using concentrated solar power (CSP) for thermal gas well deliquification |
DE112014005241B4 (en) | 2013-11-18 | 2023-05-17 | Cummins Filtration Ip, Inc. | Crankcase ventilation system and lubrication system for an internal combustion engine |
US9702282B2 (en) | 2014-01-14 | 2017-07-11 | Cummins Filtration Ip, Inc. | Crankcase ventilation system heater |
US9447714B2 (en) * | 2014-04-16 | 2016-09-20 | General Electric Company | Systems and methods for coalescing internal combustion engine blow-by |
DE102014223290A1 (en) * | 2014-11-14 | 2016-05-19 | Mahle International Gmbh | Crankcase breather |
DE102014223288A1 (en) * | 2014-11-14 | 2016-05-19 | Mahle International Gmbh | Crankcase breather |
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DE102015222977A1 (en) * | 2015-11-20 | 2017-05-24 | Robert Bosch Gmbh | Provision of vacuum for tank ventilation or brake booster |
DE102015224566A1 (en) * | 2015-12-08 | 2017-06-08 | Mahle International Gmbh | pumping device |
US10132217B2 (en) * | 2016-03-24 | 2018-11-20 | Caterpillar Inc. | Floating crankcase ventilation system and method |
DE102016208248B3 (en) * | 2016-05-13 | 2017-06-14 | Bayerische Motoren Werke Aktiengesellschaft | Oil separator for separating oil from aerosol in an internal combustion engine |
DE102016209573A1 (en) * | 2016-06-01 | 2017-12-07 | Mahle International Gmbh | Internal combustion engine with crankcase ventilation |
CN109475790A (en) | 2016-07-19 | 2019-03-15 | 康明斯滤清系统知识产权公司 | Perforated layer coalescer |
DE102016220658A1 (en) * | 2016-10-21 | 2018-04-26 | Bayerische Motoren Werke Aktiengesellschaft | Oil separation |
DE102016220770A1 (en) * | 2016-10-21 | 2018-04-26 | Elringklinger Ag | Separating device, motor device and deposition method |
PL421044A1 (en) * | 2017-03-30 | 2018-10-08 | General Electric Company | System and method for an engine jet pump, powered by the interchangeable air-flow system |
EP3726014B1 (en) * | 2017-12-11 | 2021-09-29 | Honda Motor Co., Ltd. | Internal combustion engine |
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CN108757099A (en) * | 2018-07-16 | 2018-11-06 | 安徽江淮纳威司达柴油发动机有限公司 | A kind of engine breather pipe structure |
CN109915231B (en) * | 2019-04-10 | 2020-11-10 | 广西玉柴机器股份有限公司 | Closed crankcase ventilation system of spark-ignition supercharged engine |
CN113309598B (en) * | 2020-02-27 | 2023-05-26 | 康明斯滤清系统公司 | Separation assembly with multiple separators and single jet pump assembly |
WO2021176335A1 (en) * | 2020-03-02 | 2021-09-10 | Briggs & Stratton, Llc | Internal combustion engine with reduced oil maintenance |
US11454147B2 (en) * | 2020-09-21 | 2022-09-27 | Caterpillar Inc. | Internal combustion engine with purge system |
US11680501B2 (en) * | 2021-09-21 | 2023-06-20 | Deere & Company | Internal combustion engine and crankcase ventilation system |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3824973A (en) * | 1973-06-01 | 1974-07-23 | Gen Motors Corp | Cylinder head oil drain system |
US4557226A (en) * | 1983-11-14 | 1985-12-10 | Bbc Brown, Boveri & Company, Limited | Device for returning the blow-by rate from the crankcase into the system of a supercharged internal combustion engine |
US20030101960A1 (en) * | 2001-11-30 | 2003-06-05 | Masahiko Tsuchiya | Lubrication unit for engines |
EP1275828B1 (en) * | 2001-06-15 | 2004-11-24 | Fleetguard, Inc. | Flat low profile diesel engine crankcase ventilation filter |
Family Cites Families (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4269607A (en) * | 1977-11-07 | 1981-05-26 | Walker Robert A | Air-oil separator and method of separation |
DE9410668U1 (en) * | 1994-07-02 | 1994-08-18 | Mann & Hummel Filter | Crankcase for internal combustion engines |
DE4431088A1 (en) * | 1994-09-01 | 1996-03-07 | Kloeckner Humboldt Deutz Ag | Oil suction device for exhaust gas turbocompressor |
US5487371A (en) * | 1994-12-27 | 1996-01-30 | Caterpillar Inc. | Air-oil separator utilizing centrifugal separation |
US5803025A (en) * | 1996-12-13 | 1998-09-08 | Caterpillar Inc. | Blowby disposal system |
DE19912271A1 (en) | 1999-03-18 | 2000-09-28 | Hengst Walter Gmbh & Co Kg | Oil separator for de-oiling crankcase ventilation gases of an internal combustion engine |
DE19918311A1 (en) | 1999-04-22 | 2000-11-02 | Hengst Walter Gmbh & Co Kg | Process for de-oiling crankcase ventilation gases and devices for carrying out the process |
DE29908116U1 (en) | 1999-05-06 | 2000-09-28 | Hengst Walter Gmbh & Co Kg | Oil separator for de-oiling crankcase ventilation gases of an internal combustion engine |
US6290738B1 (en) * | 1999-07-16 | 2001-09-18 | Nelson Industries, Inc. | Inertial gas-liquid separator having an inertial collector spaced from a nozzle structure |
US6247463B1 (en) | 1999-09-01 | 2001-06-19 | Nelson Industries, Inc. | Diesel engine crankcase ventilation filter |
DE20009605U1 (en) | 2000-05-30 | 2001-10-18 | Hengst Walter Gmbh & Co Kg | Device for deoiling crankcase ventilation gases of an internal combustion engine |
EP1170977A1 (en) | 2000-07-04 | 2002-01-09 | Tai-Yan Kam | Laminated composite panel-form loudspeaker |
US6354283B1 (en) | 2000-08-29 | 2002-03-12 | Fleetguard, Inc. | Diesel engine modular crankcase ventilation filter |
US6279555B1 (en) * | 2000-08-31 | 2001-08-28 | Caterpillar Inc. | Blow-by gas evacuation and oil reclamation |
US6422224B1 (en) * | 2000-11-02 | 2002-07-23 | Walker Design, Inc. | Remote air-oil separator |
US6517366B2 (en) * | 2000-12-06 | 2003-02-11 | Utilx Corporation | Method and apparatus for blocking pathways between a power cable and the environment |
DE10063903A1 (en) * | 2000-12-21 | 2002-07-04 | Mann & Hummel Filter | Free jet centrifuge with integrated oil separator |
US6345614B1 (en) * | 2000-12-27 | 2002-02-12 | Detroit Diesel Corporation | Separator and oil trap for closed crankcase ventilator systems |
US6520164B1 (en) * | 2001-07-24 | 2003-02-18 | Caterpillar Inc | Crankcase ventilation oil drain tube |
JP4293416B2 (en) * | 2002-08-23 | 2009-07-08 | 川崎重工業株式会社 | Separator and small planing boat engine |
US7648543B2 (en) * | 2004-09-21 | 2010-01-19 | Cummins Filtration Ip Inc. | Multistage variable impactor |
US7238216B2 (en) | 2004-09-21 | 2007-07-03 | Cummins Filtration Ip, Inc. | Variable flow inertial gas-liquid impactor separator |
US7473291B2 (en) * | 2004-09-21 | 2009-01-06 | Cummins Filtration Ip, Inc. | Inertial gas-liquid separator with variable flow actuator |
US7406960B2 (en) | 2004-12-10 | 2008-08-05 | Fleetguard, Inc. | Oil mist removal device with oil fill |
US7655140B2 (en) | 2004-10-26 | 2010-02-02 | Cummins Filtration Ip Inc. | Automatic water drain for suction fuel water separators |
US7281532B2 (en) * | 2005-03-01 | 2007-10-16 | Honda Motor Co., Ltd. | Blow-by gas and purge gas treating device in intake valve lift variable engine |
RU2296867C1 (en) * | 2005-08-09 | 2007-04-10 | ОАО "Звезда" | System to deliver oil into crankcase of internal combustion engine |
DE202005018132U1 (en) * | 2005-11-17 | 2007-03-29 | Hengst Gmbh & Co.Kg | Internal combustion engine with a device for separating oil from the crankcase ventilation gas |
US7699029B2 (en) * | 2007-07-26 | 2010-04-20 | Cummins Filtration Ip, Inc. | Crankcase ventilation system with pumped scavenged oil |
-
2007
- 2007-07-26 US US11/828,613 patent/US7699029B2/en active Active
-
2008
- 2008-03-12 DE DE112008001692.5T patent/DE112008001692B4/en active Active
- 2008-03-12 WO PCT/US2008/056598 patent/WO2009014772A1/en active Application Filing
- 2008-03-12 BR BRPI0813536-3A2A patent/BRPI0813536A2/en not_active Application Discontinuation
- 2008-03-12 CN CN2008800205292A patent/CN101730787B/en active Active
-
2010
- 2010-03-22 US US12/728,301 patent/US7870850B2/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3824973A (en) * | 1973-06-01 | 1974-07-23 | Gen Motors Corp | Cylinder head oil drain system |
US4557226A (en) * | 1983-11-14 | 1985-12-10 | Bbc Brown, Boveri & Company, Limited | Device for returning the blow-by rate from the crankcase into the system of a supercharged internal combustion engine |
EP1275828B1 (en) * | 2001-06-15 | 2004-11-24 | Fleetguard, Inc. | Flat low profile diesel engine crankcase ventilation filter |
US20030101960A1 (en) * | 2001-11-30 | 2003-06-05 | Masahiko Tsuchiya | Lubrication unit for engines |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010043060A1 (en) * | 2010-10-28 | 2012-05-03 | Mtu Friedrichshafen Gmbh | Crankcase and internal combustion engine |
DE102010043060B4 (en) * | 2010-10-28 | 2013-12-05 | Mtu Friedrichshafen Gmbh | Crankcase and internal combustion engine |
US9151195B2 (en) | 2010-10-28 | 2015-10-06 | Mtu Friedrichshafen Gmbh | Separator wall for a crankcase |
EP2525055A3 (en) * | 2011-05-16 | 2014-11-05 | Bayerische Motoren Werke Aktiengesellschaft | Combustion engine |
Also Published As
Publication number | Publication date |
---|---|
BRPI0813536A2 (en) | 2014-12-23 |
DE112008001692B4 (en) | 2015-12-31 |
CN101730787B (en) | 2012-08-22 |
US20090025662A1 (en) | 2009-01-29 |
US7870850B2 (en) | 2011-01-18 |
US20100175642A1 (en) | 2010-07-15 |
US7699029B2 (en) | 2010-04-20 |
CN101730787A (en) | 2010-06-09 |
DE112008001692T5 (en) | 2010-06-10 |
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