US3673994A - Crankcase blow-by gas recirculating device - Google Patents

Crankcase blow-by gas recirculating device Download PDF

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Publication number
US3673994A
US3673994A US51293A US3673994DA US3673994A US 3673994 A US3673994 A US 3673994A US 51293 A US51293 A US 51293A US 3673994D A US3673994D A US 3673994DA US 3673994 A US3673994 A US 3673994A
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US
United States
Prior art keywords
valve element
solenoid
valve
blow
throttle 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
US51293A
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English (en)
Inventor
Shigeo Aono
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Nissan Motor Co Ltd
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Nissan Motor Co Ltd
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Publication date
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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
    • F01M13/023—Control valves in suction conduit
    • 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
    • F02M25/06—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding lubricant vapours
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16N—LUBRICATING
    • F16N2280/00—Valves
    • F16N2280/02—Valves electromagnetically operated
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Definitions

  • ABSTRACT r, i Wig hpviimfim, p m A crankcase blow-by gas recirculating device which is adapted to interrupt the recirculation of the blow-by gases from the enjlly W99 Japan "44/52472 gine crankcase to the combustion chambers during deceleration and idling when the quantity of unburned hydrocarbons [52] US. Cl. ..123/1l9 B, 123/97 B in the engine exhaust gases Significantly increases which [51] llil.
  • Cl ..F02Ill device is provided i n regulating means comprising a Fleld of Search B, B, valve element operativeiy interposed in the y g recir 137/480 culating passage and means detecting the decelerating and 56 R f d idling conditions and actuating the valve element when the 1 e erences l e decelerating or idling condition is detected.
  • Such decelerating UNITED STATES PATENTS and idling conditions may preferably represented by the angular positlon of the throttle valve, vacuum 1n the intake whlttingtonu X manifold vehicle peed o any combination of these
  • the Guarnaschelll B device ofthe invention may be used in combination with an in. GeOffiOy B ternal combustion engine having a carburettor or having in 2,255,351 9/1941 Dresslel' B lieu ofthe carburettor a fuel injection system.
  • NVENTOR CRANKCASE BLOW-BY GAS RECIRCULATING DEVICE This invention relates to an automotive intemal combustion engine, and more particularly to an improved crankcase blowby gas recirculating device which is adapted to reduce the quantity of hydrocarbons contained in the engine exhaust gases.
  • blow-by gases are known to be one of the major sources of air pollution. It is, thus, known that the air pollution by motor vehicles can be considerably eliminated by recirculating the blow-by gases to the intake side of the engine, where the blow-by gases are mixed with the supplied air-fuel mixture.
  • the blow-by gases are usually led either to the carburettor upstream of the throttle valve or direct to the intake manifold.
  • the primary. object of the present invention to provide a device adapted to interrupt the recirculation of the blow-by gases from crankcase to the intake manifold during idling and decelerating operations of the automobile, whereby the air pollution resulting from the emission of increased amount of unburned hydrocarbons in the engine exhaust gases can be considerably eliminated.
  • the invention proposes to provide the blow-by gas recirculating passage with a flow regulating device which is adapted to close the recirculating passage during decelerating and idling operations.
  • the device to be used for this purpose is so constructed and arranged as to operate in relation to the angular position of the carburettor throttle valve or the vacuum in the intake manifold.
  • the flow regulating device may be of the type which is operable on both the angular position of the carburettor throttle valve and the vehicle speed.
  • FIG. 1 is a schematic view partially in section of an internal combustion engine incorporating the improvement according to this invention
  • FIGS. 2, 3 and 4 are schematic sectional views of embodiments of this invention.
  • FIG. 5 is charts showing the relationships between the throttle valve'opening which is dictated by the angular position of the carburettor throttle valve (A); engine speed (B); intake manifold vacuum (C); voltage generated for controlling the device of the invention in one embodiment (D): and quantity of hydrocarbons contained in the engine exhaust gases (E), all indicated in terms of the time elapsed; and
  • FIG. 6 is a schematical sectional view of a portion of the internal combustion engine provided with the fuel injection system, incorporating this invention.
  • FIG. 1 there is shown an internal combustion engine 10 having a carburettor 11 with an air cleaner 12, a venturi 13 and a throttle valve 14. Air is drawn into the carburettor 11 through the air cleaner 12, and is mixed up with fuel in the carburettor 11. The airfuel mixture thus produced is then drawn into a combustion chamber 15 of the engine through an intake manifold 16.
  • a crankcase is mounted as denoted by numeral 17, from which a blow-by gas recirculating passage 18 leads back to the combustion chamber through the intake manifold.
  • the passage 18, which is shown to be opened into the-intake manifold 16, may be opened into the carburettor 11 upstream of the throttle valve 14, if desired.
  • means for regulating the flow of the blow-by gases recirculated through the passage 18 is provided, which flow regulating means, as represented by numeral 19, is interposed operatively in the passage 18 as seen in FIG. 1 and is arranged in a manner to normally keep the passage 18 open and to close the passage 18 during deceleration and idling when the throttle valve 14 is substantially closed.
  • the flow regulating means 19 is so constructed as to operate in relation to any of those conditions which will provide deceleration or idling of the vehicle, such as the angular position of the throttle valve, vacuum in the intake manifold, vehicle speed, and any combination of these.
  • FIG. 2 illustrates an example of the flow regulating means which is operable on the angular position of the throttle valve.
  • the flow regulating means which is generally represented by numeral 194, comprises a valve element 20 which is operatively interposed in the passage 18 and means 21 for detecu'ng the decelerating and idling conditions and actuating the valve element 20 to move into a position to close the passage when either of the decelerating and idling conditions is detected.
  • the detecting and actuating means 21 is largely constituted by a mechanical linkage operatively connecting the valve element 19 to the throttle valve 14.
  • This mechanical linkage 21 comprises a movable arm 22 connected to the throttle valve 14 and moved as the throttle valve rotates.
  • a connecting rod 23 is operatively connectedat one end to the arm 22 and pivotally mounted at a suitable position 230 thereof.
  • An actuating rod 24 is operatively connected at one end to the other end of the connecting rod 23 and secured at the other to the valve element 20.
  • valve element which is itself may be constructed in a suitable manner, is shown as a spool valve having a central groove 20a and a land 20b adjacent thereto.
  • valve element 19 When, in operation, the vehicle is accelerating or normally cruising with the throttle valve 14 fully or partly open, then the valve element 19 is held in a position in which the passage 18 is opened through the groove 20a thereof, as shown in FIG. 2
  • FIG. 3 illustrates another example of the blow-by gas flow regulating means which is operable on the angular position of the carburettor throttle valve.
  • the modified flow regulating means which is now represented by numeral 19b, is essentially comprised by a valve element which is similar to the valve element 20 and is therefore denoted by the same numeral and an electrical linkage which is arranged not only to detect the angular position of the throttle valve 14 but to actuate the valve element 20 when such an angular position of the throttle valve as to provide decelerating or idling condition is detected.
  • the electric linkage comprises means 25 sensing the angular positions of the throttle valve 14 and generating a signal voltage when the angular position at which the throttle valve is substantially closed is sensed and a solenoid device 1912 which is adapted to move the valve element 20 when energized by the means 25 sensing the angular position of the throttle valve.
  • the solenoid device 19b is made up of a solenoid coil 26 connected through a line 27 to the means 25 and a moving core 28 rigidly connected to the valve element 20.
  • the moving core 28 is normally held, by the action of a spring 29, in a position in which the valve element 20 opens the passage 18 and, when the solenoid coil 26 is energized with a voltage supplied from the means 25, held against the action of the spring 29 in a position in which the valve element 20 closes said passage.
  • the means 25 may be connected to a suitable sensor 30 which is adapted to sense the speed at which the vehicle is driven.
  • the solenoid coil 26 will be energized when the throttle valve 14 is substantially closed and when a predetermined vehicle speed is reached.
  • the provision of such sensor 30 will prove advantageous especially where the carburettor is provided with a slow running mixture passage.
  • blow-by gas flow regulating means may be constructed so as to operate in response to the vacuums in the intake manifold of the engine, an example being illustrated in FIG. 4.
  • the flow regulating means which is generally designated by numeral 190, comprises a vacuum passage 31 communicating with the intake manifold 16 of the engine through a port 32 and a diaphragm device 33 which includes a diaphragm member 34 exposed on one side to the intake manifold vacuum through the vacuum passage 31 and an actuating rod connecting the diaphragm member 34 to the valve element 20.
  • the diaphragm member is normally held by the action of a spring 36 in a position to hold the valve element 20 to open the passage 18 and, when the vacuum in the intake manifold reaches a predetermined level, moved against the action of the spring 36 to a position to cause the valve element 20 to close the passage 18.
  • the invention has been heretofore discussed in relation to an internal combustion engine provided with the carburettor. Naturally this invention can also be applied to an internal combustion engine provided with a fuel injection system in lieu of a conventional carburettor to supply fuel to the engine.
  • FIG. 6 a schematical sectional view of a portion of the internal combustion engine provided with a fuel injection system incorporating this invention is shown.
  • the flow regulating means represented by 19b is constructed similarly to the means 19b of FIG. 3 and, therefore, like elements are denoted by like numerals. Any other element which has the same construction and operation as that in FIG. 3 is shown by the same numeral.
  • the fuel injection system 37 consists of means 38 which detects various variables of the driving condition of the vehicle such as the angular position of the throttle valve, the vacuum downstream of the throttle valve, or the engine speed and which feeds fuel through an injection pipe 39 and injection valve 40 to an injection nozzle 41 in dependence upon the thus detected viriables. Fuel is injected from the injection nozzle 41 into the intake manifold 16 to be mixed with incoming air.
  • an internal combustion engine for use with an automotive vehicle, including in combination a throttle valve, an intake old, a plurahty of combustion chambers, a crankcase, and a blow-by gas recirculating passage for providing communication between the interior of the crankcase and each of the combustion chambers through the intake manifold to introduce the blow-by gas gases to each of the combustion chambers to thereby prevent the blow-by gases from being emitted to the surrounding atmosphere, the improvement comprising:
  • on-ofi' control solenoid valve means for on-off controlling the flow of the blow-by gases to be introduced to the combustion chambers, said solenoid valve means including a valve element interposed in the recirculating passage and normally held in an open position to allow said communication, said valve element having a spool shape for abruptly shutting off said communication when moved into its closed position concurrently upon the actuation of said valve means; and
  • detecting means detecting the running conditions of the vehicle for actuating said solenoid valve means only when the engine is driven by the vehicle itself.
  • said detecting means includes sensing means for sensing the angular position of said throttle valve for generating a voltage signal when said throttle valve is substantially closed
  • said solenoid valve means further includes a solenoid device connected to said valve element for moving the same into said closed position when energized by said voltage signal.
  • said solenoid device includes a solenoid coil electrically connected with said sensing means, a moving core rigidly connected to said valve element, and a coil spring biasing the assembly of said moving core and valve element for normally holding said valve element in said open position, the spring action of said coil spring being preset to yield to the extracting force of said solenoid coil which is exerted to said assembly by said solenoid coil.
  • said detecting means includes sensing means for sensing the angular position of said throttle valve and the vehicle speed for generating a voltage signal when said throttle valve is substantially closed and when said engine speed exceeds a predetermined level
  • said solenoid valve means further includes a solenoid device connected to said valve element for moving the same into said closed position when energized by said voltage signal.
  • said solenoid device includes a solenoid coil electrically connected with said sensing means, a moving core rigidly connected to said valve element, and a coil spring biasing the assembly of said moving core and valve element for normally holding said valve element in said open position, the spring action of said coil spring being preset to yield to the extracting force of said solenoid coil which is exerted to said assembly by said solenoid coil.

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  • 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)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
  • Exhaust-Gas Circulating Devices (AREA)
US51293A 1969-07-04 1970-06-30 Crankcase blow-by gas recirculating device Expired - Lifetime US3673994A (en)

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JP5247269 1969-07-04

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US (1) US3673994A (fr)
DE (1) DE2033143B2 (fr)
FR (1) FR2054153A5 (fr)
GB (1) GB1316822A (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4064851A (en) * 1975-09-05 1977-12-27 Robert Bosch Gmbh Servo controlled exhaust gas recycle system
US4171733A (en) * 1977-05-05 1979-10-23 The Voges Manufacturing Company, Inc. Speed-responsive valve control for intake manifold to crankcase in internal combustion engine
US4395876A (en) * 1976-06-30 1983-08-02 Ethyl Corporation Variable secondary air system for an engine
US5228424A (en) * 1992-03-30 1993-07-20 Collins Gregorio S Positive crankcase ventilation valve
US5542401A (en) * 1994-11-09 1996-08-06 En-Ovation Technology, Inc. Internal combustion engine crankcase vacuum method and apparatus
US5722376A (en) * 1996-12-20 1998-03-03 Ventures Unlimited Inc. Apparatus and method for controlling the flow of crankcase emissions in an internal combustion engine
US20010047801A1 (en) * 2000-05-27 2001-12-06 Michael Baeuerle Method for performing a functional diagnosis on a ventilation system of a crankcase of an internal combustion engine
DE19504348B4 (de) * 1995-02-10 2004-09-23 Pierburg Gmbh Abgasrückführsteuerventil
EP1630367A1 (fr) * 2004-08-25 2006-03-01 Ford Global Technologies, LLC, A subsidary of Ford Motor Company Méthode pour ventiler le carter d'un moteur à combustion et moteur pour la mise en oeuvre de cette méthode

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1196685B (it) * 1984-02-16 1988-11-25 Enrico Risotti Sistema di alimentazione per motori a combustione interna
DE3440050A1 (de) * 1984-11-02 1986-07-31 Axel 5069 Bensberg Blume Kraftstoffsparvorrichtung
DE19645665A1 (de) * 1996-11-06 1998-05-07 Mann & Hummel Filter Ventileinheit
DE102007063423A1 (de) * 2007-12-18 2009-06-25 Volkswagen Ag Ent- und Belüftungseinrichtung des Zylinderkurbelgehäuses einer Hubkolben-Brennkraftmaschine
DE102010021970A1 (de) * 2010-05-28 2011-12-01 Volkswagen Ag Entlüftungseinrichtung für ein Gehäuse einer Brennkraftmaschine, Drossel für eine Spülluftleitung der Entlüftungseinrichtung und Verfahren zur Regelung der Spülluftzufuhr
WO2019081956A1 (fr) 2017-10-28 2019-05-02 Ganz Engine Ltd Agencement structural d'un moteur à allumage par compression avec chambre de précombustion à géométrie variable pour modérer le volume d'émissions dangereuses

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2064720A (en) * 1934-10-02 1936-12-15 Earl L Hoyles Fuel mixer
US2080588A (en) * 1932-06-17 1937-05-18 Bendix Prod Corp Crankcase ventilator for internal combustion engines
US2154593A (en) * 1939-04-18 Crankcase ventilating system
US2255351A (en) * 1940-01-12 1941-09-09 Dieselair Corp Automatic control head for breather systems
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
US3161187A (en) * 1964-01-14 1964-12-15 Gen Motors Corp Crankcase ventilation control device
US3368345A (en) * 1965-03-22 1968-02-13 Walker Brooks Engine for reduced exhaust smog emissions
US3416503A (en) * 1967-10-27 1968-12-17 Carl F. High Engine fume discharge reduction systems
US3473521A (en) * 1967-09-13 1969-10-21 George V Mustain Crankcase ventilation valve and fuel economizer
US3495578A (en) * 1968-05-02 1970-02-17 Nycal Co Inc The Positive crankcase ventilating devices

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2154593A (en) * 1939-04-18 Crankcase ventilating system
US2080588A (en) * 1932-06-17 1937-05-18 Bendix Prod Corp Crankcase ventilator for internal combustion engines
US2064720A (en) * 1934-10-02 1936-12-15 Earl L Hoyles Fuel mixer
US2255351A (en) * 1940-01-12 1941-09-09 Dieselair Corp Automatic control head for breather systems
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
US3161187A (en) * 1964-01-14 1964-12-15 Gen Motors Corp Crankcase ventilation control device
US3368345A (en) * 1965-03-22 1968-02-13 Walker Brooks Engine for reduced exhaust smog emissions
US3473521A (en) * 1967-09-13 1969-10-21 George V Mustain Crankcase ventilation valve and fuel economizer
US3416503A (en) * 1967-10-27 1968-12-17 Carl F. High Engine fume discharge reduction systems
US3495578A (en) * 1968-05-02 1970-02-17 Nycal Co Inc The Positive crankcase ventilating devices

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4064851A (en) * 1975-09-05 1977-12-27 Robert Bosch Gmbh Servo controlled exhaust gas recycle system
US4395876A (en) * 1976-06-30 1983-08-02 Ethyl Corporation Variable secondary air system for an engine
US4171733A (en) * 1977-05-05 1979-10-23 The Voges Manufacturing Company, Inc. Speed-responsive valve control for intake manifold to crankcase in internal combustion engine
US5228424A (en) * 1992-03-30 1993-07-20 Collins Gregorio S Positive crankcase ventilation valve
US5542401A (en) * 1994-11-09 1996-08-06 En-Ovation Technology, Inc. Internal combustion engine crankcase vacuum method and apparatus
DE19504348B4 (de) * 1995-02-10 2004-09-23 Pierburg Gmbh Abgasrückführsteuerventil
DE19504348C5 (de) * 1995-02-10 2006-06-22 Pierburg Gmbh Abgasrückführsteuerventil
US5722376A (en) * 1996-12-20 1998-03-03 Ventures Unlimited Inc. Apparatus and method for controlling the flow of crankcase emissions in an internal combustion engine
US20010047801A1 (en) * 2000-05-27 2001-12-06 Michael Baeuerle Method for performing a functional diagnosis on a ventilation system of a crankcase of an internal combustion engine
ES2193835A1 (es) * 2000-05-27 2003-11-01 Bosch Gmbh Robert Procedimiento para diagnosticar el funcionamiento de un sistema de ventilacion de un carter de cigueñal de un motor de combustion interna.
US6779388B2 (en) 2000-05-27 2004-08-24 Robert Bosch Gmbh Method for performing a functional diagnosis on a ventilation system of a crankcase of an internal combustion engine
EP1630367A1 (fr) * 2004-08-25 2006-03-01 Ford Global Technologies, LLC, A subsidary of Ford Motor Company Méthode pour ventiler le carter d'un moteur à combustion et moteur pour la mise en oeuvre de cette méthode

Also Published As

Publication number Publication date
DE2033143B2 (de) 1974-10-03
GB1316822A (en) 1973-05-16
FR2054153A5 (fr) 1971-04-16
DE2033143A1 (de) 1971-01-21

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