EP2054589A1 - Druckregelventil, kurbelgehäuseentlüftungseinrichtung und verfahren zum betreiben derselben - Google Patents
Druckregelventil, kurbelgehäuseentlüftungseinrichtung und verfahren zum betreiben derselbenInfo
- Publication number
- EP2054589A1 EP2054589A1 EP07802232A EP07802232A EP2054589A1 EP 2054589 A1 EP2054589 A1 EP 2054589A1 EP 07802232 A EP07802232 A EP 07802232A EP 07802232 A EP07802232 A EP 07802232A EP 2054589 A1 EP2054589 A1 EP 2054589A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve
- pressure control
- control valve
- crankcase
- internal combustion
- 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.)
- Granted
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
- F01M13/0011—Breather valves
-
- 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
- F01M13/0011—Breather valves
- F01M2013/0016—Breather valves with a membrane
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B75/00—Other engines
- F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
- F02B75/18—Multi-cylinder engines
- F02B75/22—Multi-cylinder engines with cylinders in V, fan, or star arrangement
Definitions
- the invention relates to a pressure control valve for a crankcase ventilation of an internal combustion engine comprising a valve housing, a valve diaphragm and a valve spring, a crankcase ventilation device comprising such a pressure control valve and a method for actuating the pressure control valve or the crankcase ventilation device.
- crankcase vents are provided, via which a pressure equalization can take place by gases escape from the crankcase and can be returned to the intake system of the internal combustion engine. It is also known to arrange a pressure control valve in the region between the crankcase and the intake system in order to control the outflow of crankcase gases into the intake system.
- DE-OS 1 526 575 is based and describes a control valve on the intake manifold side upstream check valve, which closes the connection to the crankcase in the event of a misfire of the internal combustion engine due to the increased pressure in the intake system. In this way, a continuation of the pressure wave is prevented in the crankcase.
- gas-powered, in particular hydrogen-powered, internal combustion engines The situation is completely different in the case of gas-powered, in particular hydrogen-powered, internal combustion engines.
- the fuel in combination with air has a very high ignitability over a wide range, so that in the case of a misfire of the internal combustion engine, a propagation of the flame front through the crankcase ventilation into the crankcase and there the ignition of a larger amount of ignitable mixture is possible.
- Another aspect in the context of gas-powered internal combustion engines relates to the possible accumulation of fuel (damping) in the intake system, in particular while the internal combustion engine is not in operation, with the result of a very high probability of ignition during the subsequent start of the internal combustion engine.
- Such accumulation of fuel in the intake system may, for example, be due to an increased amount of blow-by gases or a defect in the fuel supply.
- a pressure control valve having the features of claim 1
- a separate check valve is provided for locking the pressure control valve
- a crankcase ventilation device with the features of claim 6, wherein a vacuum pump is provided for evacuating the separate room and a method with the features of claim 9, by the pressure control valve is closed when a bleeding a combustible mixture, the crankcase is to be prevented.
- the check valve comprises a barrier membrane and a locking spring which cooperates with the valve membrane and thus immediately the switching element of the pressure control valve is lockable, a particularly high reliability is ensured.
- the check valve is arranged in the valve housing, wherein between the barrier membrane and the valve housing, a separate space is formed which can be evacuated.
- a common negative pressure pump is provided in a crankcase ventilation device with a plurality of pressure control valves for evacuating the separate spaces of the pressure control valves.
- a particularly preferred method for actuating a pressure control valve or a crankcase ventilation device according to the invention with a pressure control valve according to the invention is characterized in that the pressure regulating valve is closed when a burning mixture of the crankcase is to be prevented. This is the case in particular when the internal combustion engine is stopped or during the starting phase of the internal combustion engine.
- FIG. 1 shows a crankcase ventilation device with vacuum-actuable shut-off valves, a vacuum pump and an electrical switching valve
- Figure 2 is a vacuum actuated shut-off valve for a crankcase ventilation in section
- FIG 3 shows an intake system of an internal combustion engine with a vacuum actuated shut-off valve.
- a vacuum-actuable shut-off valve 200 for crankcase ventilation is shown in section in FIG.
- a partially concealed inlet port 202 in the present view serves to connect the shut-off valve 200 with a vent opening in the crankcase of the internal combustion engine.
- the shut-off valve 200 is attached to a connection surface 218 of the valve housing 204 on an intake system of the internal combustion engine, not shown here, wherein an outlet port 210 protrudes through an inlet opening in the intake system in the intake air leading portion of the intake, so starting from the inlet port 202 on the within the Valve housing 204 formed between the valve housing 204 and a valve diaphragm 206 space and the nozzle 210 crankcase ventilation gases are fed to the intake system.
- a negative pressure prevails in the intake system, while blow-by gases increase the pressure in the crankcase.
- the intake system is connected in a gas-conducting manner with the crankcase, a predetermined negative pressure can also be achieved in the crankcase.
- there is a regulation of the negative pressure in the crankcase by means of the check valve 200 with the valve diaphragm 206, which cooperates with the stop valve side, lying in the valve housing 204 opening of the outlet nozzle 210.
- the valve membrane 206 is acted upon by the force of a housing side supporting valve spring 205 in the opening direction.
- valve diaphragm 206 In the reverse direction, the valve diaphragm 206 by the force of a locking spring 220 with the interposition of a barrier membrane 212, which is supported on the valve diaphragm 206 on the one hand and on the locking spring 220 on the other hand, acted upon.
- the force of the locking spring 220 exceeds the force of the valve spring 205 such that when the locking spring force is fully effective, the shut-off valve 200 is blocked and also a possible negative pressure in the crankcase and / or overpressure in the intake system remains securely closed.
- crankcase pressure is controlled as usual, by shifting the valve diaphragm 206 against the force of the valve spring 205 towards the valve seat and thus the passage cross-section for a lower pressure in the intake system compared to the pressure in the crankcase crankcase ventilation reduced gas. If the negative pressure in the intake system is too large, the valve diaphragm 206 closes the passage for crankcase ventilation gases for a short time.
- An evacuation of the space 214 takes place by means of the vacuum pump 106, which is connected by means of pressure lines 110 to the shut-off valves 102, 104 and for the control of which the electrical switching valve 108 is provided.
- the vacuum pump 106 is turned on when opening the crankcase ventilation is safe in terms of safety, otherwise - in critical phases, especially at start and at standstill of the engine - the vacuum pump 106 is turned off, thus blocking the crankcase ventilation.
- FIG. 3 shows an intake system 302 of a hydrogen-powered V12 cylinder internal combustion engine 300 with a vacuum-actuable shut-off valve 304 in the installed position.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006051062A DE102006051062A1 (de) | 2006-10-30 | 2006-10-30 | Druckregelventil, Kurbelgehäuseentlüftungseinrichtung und Verfahren zum Betreiben derselben |
PCT/EP2007/007853 WO2008052620A1 (de) | 2006-10-30 | 2007-09-08 | Druckregelventil, kurbelgehäuseentlüftungseinrichtung und verfahren zum betreiben derselben |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2054589A1 true EP2054589A1 (de) | 2009-05-06 |
EP2054589B1 EP2054589B1 (de) | 2010-04-21 |
Family
ID=38596217
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07802232A Expired - Fee Related EP2054589B1 (de) | 2006-10-30 | 2007-09-08 | Druckregelventil, kurbelgehäuseentlüftungseinrichtung und verfahren zum betreiben derselben |
Country Status (4)
Country | Link |
---|---|
US (1) | US20090205620A1 (de) |
EP (1) | EP2054589B1 (de) |
DE (2) | DE102006051062A1 (de) |
WO (1) | WO2008052620A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102015101886B4 (de) | 2015-02-10 | 2022-07-14 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Regelvorrichtung zur Gleichverteilung von Gasen und/oder Flüssigkeiten auf mindestens zwei Behälter |
DE102017004858A1 (de) | 2017-05-19 | 2018-11-22 | Deutz Aktiengesellschaft | Verbrennungsmotoren mit äußerer Gemischbildung und Ausgleichsbehälter zur Vermeidung von Rückzündungen |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3225753A (en) * | 1965-12-28 | Fire check and cold start control device for crankcase ventilator | ||
US2933075A (en) * | 1952-12-24 | 1960-04-19 | Geffroy Robert Rene Louis | Apparatus for controlling the flow of air to the intake manifold and the ignition of an automotive engine |
US3262436A (en) * | 1964-12-08 | 1966-07-26 | Gen Motors Corp | Pressure regulating device |
DE1526575A1 (de) * | 1966-05-27 | 1970-04-30 | Gen Motors Corp | Kurbelgehaeuse-Entlueftungsventil fuer Brennkraftmaschinen |
US3473521A (en) * | 1967-09-13 | 1969-10-21 | George V Mustain | Crankcase ventilation valve and fuel economizer |
US4723410A (en) * | 1985-10-22 | 1988-02-09 | Otters John L | Safety improvements in high pressure thermal machines |
US5092281A (en) * | 1988-07-26 | 1992-03-03 | Kabushiki Kaisha Toyoda Jidoshokki Seisakusho | Hydrogen engine system |
DE4019757A1 (de) * | 1990-06-21 | 1992-01-02 | Honeywell Bv | Membrangesteuerter gasdruckregler |
US5845485A (en) * | 1996-07-16 | 1998-12-08 | Lynntech, Inc. | Method and apparatus for injecting hydrogen into a catalytic converter |
US5733421A (en) * | 1996-09-19 | 1998-03-31 | Pettigrew; J. W. | Hydrogen-oxygen fuel cell |
DE19860154A1 (de) * | 1998-12-24 | 2000-06-29 | Daimler Chrysler Ag | Einrichtung zur Entlüftung des Kurbelgehäuses eines Verbrennungsmotors |
DE102007033411A1 (de) * | 2007-07-18 | 2009-01-22 | Audi Ag | Fahrzeug, insbesondere Kraftfahrzeug mit Tankentlüftungssystem |
-
2006
- 2006-10-30 DE DE102006051062A patent/DE102006051062A1/de not_active Withdrawn
-
2007
- 2007-09-08 WO PCT/EP2007/007853 patent/WO2008052620A1/de active Application Filing
- 2007-09-08 DE DE502007003537T patent/DE502007003537D1/de active Active
- 2007-09-08 EP EP07802232A patent/EP2054589B1/de not_active Expired - Fee Related
-
2009
- 2009-04-29 US US12/432,305 patent/US20090205620A1/en not_active Abandoned
Non-Patent Citations (1)
Title |
---|
See references of WO2008052620A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE102006051062A1 (de) | 2008-05-08 |
WO2008052620A1 (de) | 2008-05-08 |
EP2054589B1 (de) | 2010-04-21 |
DE502007003537D1 (de) | 2010-06-02 |
US20090205620A1 (en) | 2009-08-20 |
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