US3662723A - Installation for venting the crankcase of an internal combustion engine - Google Patents

Installation for venting the crankcase of an internal combustion engine Download PDF

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Publication number
US3662723A
US3662723A US31236A US3662723DA US3662723A US 3662723 A US3662723 A US 3662723A US 31236 A US31236 A US 31236A US 3662723D A US3662723D A US 3662723DA US 3662723 A US3662723 A US 3662723A
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US
United States
Prior art keywords
installation according
air
crankcase
vent line
valve
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.)
Expired - Lifetime
Application number
US31236A
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English (en)
Inventor
Hans-Wilhelm Buhl
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daimler Benz AG
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Daimler Benz AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Daimler Benz AG filed Critical Daimler Benz AG
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Publication of US3662723A publication Critical patent/US3662723A/en
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Expired - Lifetime legal-status Critical Current

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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
    • 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
    • F01M13/02—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
    • 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
    • F01M2013/026—Crankcase ventilating or breathing by means of additional source of positive or negative pressure of negative pressure with pumps sucking air or blow-by gases from the crankcase

Definitions

  • the present invention relates to an installation for the venting of the crankcase of an internal combustion engine.
  • the aim underlying the present invention essentially resides in creating an installation of the aforementioned type by means of which is avoided that the vent gases are able to reach the atmosphere during a pushing operation with a closed exhaust gas line, ,i.e., during an operation when the vehicle as prime-mover pushes the'engine.
  • a closure valve is provided according to the present invention in the vent line for the vent gases which, with a closed throttle valve in the exhaust gas line, positively and forcibly closes the vent line with respect to the atmosphere.
  • crankcase and a connecting pipe in communication with the atmosphere may be connected in parallel with the vent line whereby a pressure control valve may be arranged in the connecting pipe which opens up the connecting pipe in case of non-permissive pressures in the crankcase.
  • vent line suffices during short periods of pushing operation in order to be able to accommodate the vent gases.
  • an air tank is connected to the vent line between the crankcase and the closure valve.
  • the closure valve and air tank are arranged in the air suction line whereby the closure valve is located upstream of the air tank effective as muffleror noise damper.
  • a suctiontype vent pump may be provided in the vent line.
  • the vent line may terminate in the suction air line upstream of the suction air filter. If, however. an air filter is provided in the connecting pipe for the atmospheric air, the vent line may also terminate in the suction air line downstream of the suction or intake air filter.
  • Another object of the present invention resides in an installation for venting the crankcase of an internal combustion engine which prevents the venting gases to reach the atmosphere when the exhaust gas line is closed.
  • a further object of the present invention resides in an installation for venting the crankcase of an internal combustion engine which is safe and reliable in operation, yet is simple in construction.
  • FIG. 1 is a schematic view of a first embodiment of an installation for venting the crankcase of an internal combustion engine without suction pump;
  • FIG. 2 is a schematic view of the installation according to FIG. 1 with the closure valve thereof in a different position;
  • FIG. 3 is a schematic view of a modified embodiment of. a. second installation for venting the crankcase of an internal combustion engine which is provided with a suction pump;
  • FIG. 4 is a partial schematic view illustrating certain details of the installation according to FIG. 3 with the closure valve in a different position;
  • FIG. 5 is a schematic view of a modified embodiment of a third installation for venting the crankcase of an internal combustion engine which has the air filter located upstream of the vent line.
  • reference numeral 10 designates in this Figure the crankcase
  • reference numeral 1 I the cylinder head
  • reference numeral 12 the exhaust gas line
  • reference numeral 13 the suction line
  • reference numeral 14 generally designates the vent line of an internal combustion engine terminating in the crankcase 10 thereof.
  • An air filter 15 and upstream thereof an air tank or reservoir 16 are arranged in the suction line 13 whereby the discharge end 14a of the vent line 14 terminates in the suctionline 13 between the filter 15 and the tank 16.
  • a throttle valve 17 is arranged in the suction line 13 upstream of the air tank 16; the throttle valve 17 is operatively connected or coupled by way of a linkage 18 with a throttle valve 19 for closing the exhaust gas line 12.
  • the linkage 18 is in operative connectionby way of an actuating connection schematically indicat'edby 20 with a brake lever (not shown) in the driver cab of the motor vehicle driven by the internal combustion engine.
  • a pipe connection or stub 21 for atmospheric air is connected with the vent line 14 in parallel to the crankcase 10.
  • a pressure limit valve 22 of conventional construction is arranged in the pipe connection or stub 21. It is avoided by this arrangement that the vacuum in crankcase 10 may assume non-pennissive values.
  • venting i.e., the drawing-01f of the gases out of the crankcase 10 takes place during the aforementioned operating conditions of the engine as a result of the suction effect of the cylinders.
  • FIGS. 3 and 4 differs from the arrangement of FIGS. 1 and 2 only in that a suction-type vent pump 123 is provided in the vent line 114 between crankcase and the closure valve generally designated by reference numeral 117 and in that the air tank tion with a brake lever in the driver cab by means of an actuating transmission 120.
  • a pipe connection or stub 1 21 for the atmospheric air terminates in the vent line 114 between crankcase 1 10 and closure valve 117.
  • a pressure limit valve 122 for the vacuum of the crankcase 110 is arranged in the pipe con nection or stub 121.
  • the outlet end 114a of the vent line 1 14 terminates in the air suction line 113 upstream of the air filter 115.
  • the air tank 116 is connected by a tank line 116a with the closure valve 117 whereby the arrangement is made in such a manner that with a tumed-ofi engine brake, i.e., opened throttle valve 119, the, crankcase 110 is connected with the suction line 113 (FIG. 3) whereas in the closing position of throttle valve 119 it is connected with the air tank 1 16 (FIG. 4).
  • An excess pressure valve 124 may be arranged in the air tank 116 which opens up a communication 125 between the suction line 113 and the air tank 116 when exceeding a predetermined excess pressure. After turning ofi or disengagement of the engine brake, the crankcase 110 is again connected with the air suction line 113.
  • FIG. 5 differs from the arrangement of FIGS. 1 and 2, only in that the air filter 215 is located upstream of the vent line 214 and in that another air filter 224 is provided on stub pipe 221.
  • the reference numerals in this FIG. 5 correspond to the reference numerals of FIG. 1 with 200" added thereto.
  • the operation of this FIG. 5 installation is similar to the operation of the FIGS. 1 and 2 installation.
  • closure valve actuating means includes a direct mechanical linkage between said exhaust valve means and said closure valve means.
  • closure valve means is a throttle valve in an air suction line of the en ine.
  • suction pump is arranged in the vent line means.
  • closure valve means is a three-way valve in the vent line means.
  • said three-way valve includes means for connecting said vent line means directly to said air inlet means when said exhaust valve means is open and means for connecting said vent line means directly to said air tank when said exhaust valve is closed.
US31236A 1969-04-25 1970-04-23 Installation for venting the crankcase of an internal combustion engine Expired - Lifetime US3662723A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691921068 DE1921068A1 (de) 1969-04-25 1969-04-25 Vorrichtung zum Entlueften des Kurbelgehaeuses einer Brennkraftmaschine

Publications (1)

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US3662723A true US3662723A (en) 1972-05-16

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Family Applications (1)

Application Number Title Priority Date Filing Date
US31236A Expired - Lifetime US3662723A (en) 1969-04-25 1970-04-23 Installation for venting the crankcase of an internal combustion engine

Country Status (4)

Country Link
US (1) US3662723A (fr)
DE (1) DE1921068A1 (fr)
FR (1) FR2046248A5 (fr)
GB (1) GB1270217A (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5501203A (en) * 1995-01-06 1996-03-26 Briggs & Stratton Corporation Dynamic gas seal for internal combustion engines
US5803025A (en) * 1996-12-13 1998-09-08 Caterpillar Inc. Blowby disposal system
US5937837A (en) * 1997-12-09 1999-08-17 Caterpillar Inc. Crankcase blowby disposal system
US6886532B2 (en) * 2001-03-13 2005-05-03 Nissan Motor Co., Ltd. Intake system of internal combustion engine
FR2886675A1 (fr) * 2005-06-03 2006-12-08 Renault Sas Moteur de vehicule comprenant un piquage de depression debouchant dans un conduit d'entree d'air
US20100288214A1 (en) * 2009-05-15 2010-11-18 Pelmear Douglas A Internal combustion engine and method of operating same
US20110023850A1 (en) * 2009-07-31 2011-02-03 International Engine Intellectual Property Company Variable open-closed crankcase breather system for blow-by gas
EP2463488A1 (fr) * 2010-12-09 2012-06-13 Suzuki Motor Corporation Structure de fixation pour pompe à vide

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE431702C (de) * 1923-04-01 1926-07-15 Adolf Indlekofer Verfahren und Einrichtung zur Ersparung von Brennstoff beim Betrieb von Explosionsmotoren
US2064720A (en) * 1934-10-02 1936-12-15 Earl L Hoyles Fuel mixer
US3157169A (en) * 1962-02-19 1964-11-17 Drysdale Robert Vacuum control for crankcase ventilation
US3199498A (en) * 1961-09-14 1965-08-10 Daimler Benz Ag Noise-suppression system for diesel engines having exhaust brake means
DE1476036A1 (de) * 1965-03-13 1969-03-13 Daimler Benz Ag Brennkraftmaschine mit einer Vorrichtung zum Absaugen der Entlueftungsgase
US3482562A (en) * 1967-12-06 1969-12-09 Gen Motors Corp Air inlet control mechanism
US3500806A (en) * 1968-04-12 1970-03-17 Chrysler Corp Preheating inlet air during engine idling

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE431702C (de) * 1923-04-01 1926-07-15 Adolf Indlekofer Verfahren und Einrichtung zur Ersparung von Brennstoff beim Betrieb von Explosionsmotoren
US2064720A (en) * 1934-10-02 1936-12-15 Earl L Hoyles Fuel mixer
US3199498A (en) * 1961-09-14 1965-08-10 Daimler Benz Ag Noise-suppression system for diesel engines having exhaust brake means
US3157169A (en) * 1962-02-19 1964-11-17 Drysdale Robert Vacuum control for crankcase ventilation
DE1476036A1 (de) * 1965-03-13 1969-03-13 Daimler Benz Ag Brennkraftmaschine mit einer Vorrichtung zum Absaugen der Entlueftungsgase
US3482562A (en) * 1967-12-06 1969-12-09 Gen Motors Corp Air inlet control mechanism
US3500806A (en) * 1968-04-12 1970-03-17 Chrysler Corp Preheating inlet air during engine idling

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5501203A (en) * 1995-01-06 1996-03-26 Briggs & Stratton Corporation Dynamic gas seal for internal combustion engines
US5803025A (en) * 1996-12-13 1998-09-08 Caterpillar Inc. Blowby disposal system
US5937837A (en) * 1997-12-09 1999-08-17 Caterpillar Inc. Crankcase blowby disposal system
US6886532B2 (en) * 2001-03-13 2005-05-03 Nissan Motor Co., Ltd. Intake system of internal combustion engine
EP3043060A3 (fr) * 2001-03-13 2016-10-19 Nissan Motor Co., Ltd. Système d'admission de moteur à combustion interne
FR2886675A1 (fr) * 2005-06-03 2006-12-08 Renault Sas Moteur de vehicule comprenant un piquage de depression debouchant dans un conduit d'entree d'air
US8991356B2 (en) 2009-05-15 2015-03-31 Douglas A. Pelmear Internal combustion engine and method of operating same
CN102640402A (zh) * 2009-05-15 2012-08-15 道格拉斯·A·佩尔米尔 内燃机及其操作方法
US8616175B2 (en) * 2009-05-15 2013-12-31 Douglas A. Pelmear Internal combustion engine and method of operating same
CN102640402B (zh) * 2009-05-15 2015-04-15 道格拉斯·A·佩尔米尔 内燃机及其操作方法
US20100288214A1 (en) * 2009-05-15 2010-11-18 Pelmear Douglas A Internal combustion engine and method of operating same
US9915209B2 (en) 2009-05-15 2018-03-13 Douglas A. Pelmear Internal combustion engine and method of operating same
US10208682B2 (en) 2009-05-15 2019-02-19 Douglas A. Pelmear Internal combustion engine and method of operating same
US10724446B2 (en) 2009-05-15 2020-07-28 Douglas Alan Pelmear Lubrication system of an internal combustion engine and method of operating same
US11808220B2 (en) 2009-05-15 2023-11-07 Douglas Alan Pelmear Internal combustion engine and method of operating same
US8171924B2 (en) * 2009-07-31 2012-05-08 International Engine Intellectual Property Company, Llc Variable open-closed crankcase breather system for blow-by gas
US20110023850A1 (en) * 2009-07-31 2011-02-03 International Engine Intellectual Property Company Variable open-closed crankcase breather system for blow-by gas
EP2463488A1 (fr) * 2010-12-09 2012-06-13 Suzuki Motor Corporation Structure de fixation pour pompe à vide
US8869780B2 (en) 2010-12-09 2014-10-28 Suzuki Motor Corporation Attachment structure of vacuum pump

Also Published As

Publication number Publication date
DE1921068A1 (de) 1970-11-12
FR2046248A5 (fr) 1971-03-05
GB1270217A (en) 1972-04-12

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