US3170448A - Spring - Google Patents

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Publication number
US3170448A
US3170448A US308889A US30888963A US3170448A US 3170448 A US3170448 A US 3170448A US 308889 A US308889 A US 308889A US 30888963 A US30888963 A US 30888963A US 3170448 A US3170448 A US 3170448A
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US
United States
Prior art keywords
passage
coils
spring element
flow
crankcase
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
US308889A
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English (en)
Inventor
Campbell Colin
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.)
Walker Manufacturing Co
Original Assignee
Walker Manufacturing Co
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 Walker Manufacturing Co filed Critical Walker Manufacturing Co
Priority to US308889A priority Critical patent/US3170448A/en
Priority to GB37146/64A priority patent/GB1073755A/en
Priority to BE652924D priority patent/BE652924A/xx
Priority to LU46924D priority patent/LU46924A1/xx
Priority to NL6410629A priority patent/NL6410629A/xx
Priority to DEW37535A priority patent/DE1294090B/de
Application granted granted Critical
Publication of US3170448A publication Critical patent/US3170448A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F02B77/00—Component parts, details or accessories, not otherwise provided for
    • F02B77/08—Safety, indicating, or supervising devices
    • F02B77/10—Safety means relating to crankcase explosions
    • 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
    • F01M13/025—Crankcase ventilating or breathing by means of additional source of positive or negative pressure of negative pressure using engine inlet suction with an inlet-conduit via an air-filter
    • 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
    • F02M1/00—Carburettors with means for facilitating engine's starting or its idling below operational temperatures
    • 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
    • F02M2700/00—Supplying, feeding or preparing air, fuel, fuel air mixtures or auxiliary fluids for a combustion engine; Use of exhaust gas; Compressors for piston engines
    • F02M2700/43—Arrangements for supplying air, fuel or auxiliary fluids to a combustion space of mixture compressing engines working with liquid fuel
    • F02M2700/4302—Arrangements for supplying air, fuel or auxiliary fluids to a combustion space of mixture compressing engines working with liquid fuel whereby air and fuel are sucked into the mixture conduit
    • F02M2700/4323—Throttling devices (not control systems thereof)
    • F02M2700/4326—Means for preventing back-fire

Definitions

  • This invention relates generally to crankcase ventilation systems, and more particularly, to a flame stop adapted to be operatively mounted in a blowby passage extending between the crankcase and the air intake system of an internal combustion engine. 7
  • the present invention is directed towards a novel flame stop adapted to be operatively mounted within the blowby passage of a crankcase ventilating system, and which is operable to move slightly within the blowby passage with normal engine vibrations, thus preventing the aforementioned crankcase residue from adhering to and accumulating on the flame stop to limit the desired fiow of blowby gases.
  • FIGURE 1 is a side elevational view, partially in section, of a preferred embodiment of the flame stop of the present invention in operative association with a schematic representation of a conventional internal combustion engine;
  • FIGURE 2 is an enlarged sectional view of the flame stop illustrated in FIGURE 1, taken within the circle 2 thereof.
  • a flame stop 10 in accordance with a preferred embodiment of the present invention, is shown in operative association with an internal combustion engine, generally designated 12, having a crankcase 14 and an oil inlet passage 16 which is covered by an oil filter cap 18,
  • a conventional air cleaner 2 having a suitable filter element 22 and an air intake chamber 24, is operatively connected through a carburetion assembly 26 and an intake manifold 28 to the engine 12.
  • a hose-like or tubular conduit 30 extends between the crankcase 14 and the air cleaner fidldgid Patented Feb. 23, 1965 2G to communicate the blowby gases, which accumulate Within the crankcase 14, to the air cleaner 20.
  • a second tubular conduit 32 is connected at one end to the intake manifold 28, and at the other end to the tubular conduit 30.
  • a combination control orifice and plunger mechanism 36 is mounted at the juncture of the tubular conduitsfitl and 32, and is adapted to operatively support the flame stop 10 of the present invention.
  • the control orifice and plunger mechanism 36 comprises an orifice housing 38 which defines a central chamber 40' operatively connected through an orifice 42 to a branch passageway 44.
  • the housing 38 is formed with an integral sleeve portion 46 adapted to slidably support a plunger 48.
  • the plunger 48 is provided with a reduced section shank portion 50 adapted to be inserted through the-orifice 42 as the plunger 43 is biased inwardly, thereby removing any crankcase residue that may have accumulated within the orifice 42.
  • a compression spring 52 is provided on the plunger 48 and extends between the sleeve portion 46 of the housing 38 and an enlarged actuating button 54 to resiliently bias the plunger 48 outwardly and maintain it in the position illustrated in FIGURE 2.
  • the flame 58 is approximately .0095 inch from its adjacent convolutions.
  • the coil spring element 56 defines an axially extending central cavity 60 which is closed at the upper end thereof by a closure cap or end plug 62, which plug includes a helically ribbed sleeve portion 64 adapted to be threaded into the upper end of the spring element 56 to secure the closure cap 62 thereto.
  • the lower end portion of the coil spring element 56 is rigidly secured within the tubular conduit 30 by an annular support cup, generally designated 66.
  • the cup 66 is provided with a pair of radially extending flange portions 68 and 70 adapted to respectively engage the lower edge of the spring element 56 and an upper edge 72 of the orifice housing 38 to. operatively secure the spring element 56 thereto.
  • blowby gases are communicated through the conduit 30 in the general direction of the arrow 74%.
  • the gases upon reaching the flame stop in, flow into the central cavity 60 defined by the coil spring 56 where they pass unimpeded through the interstices between each adjacent convolution 58, as representatively illustrated by the arrows 76.
  • the flame pressure front which immediately precedes the backfire and which is herein designated by the dotted arrow 78, strikes the closure cap 62 and compresses the coil spring 56.
  • the coil spring 52 is secured at only the lower end portion thereof, the upper end portion is free to randomly vacillate within the conduit 30 with normal operating vibrations of the engine 12. Such movement of the coil spring 52 substantially eliminates any residue or crankcase contaminants from adhering to the convolutions 58 of the spring 52, or within the interstices therebetween, thus providing a flame stop 10 which is substantially non-clogging and .which there- 3 fore requires very little, if any, maintenance during its entire operational life.
  • a compressible wire spring element mounted in said passage, and mounting means for said wire spring element permitting compression of said wire spring element in said passage during crankcase ventilation, said wire spring element being compressible by fluid in said passage at predetermined pressure conditions resulting from engine operation.
  • said coils being arranged to permit blowby gases to flow axially in to said cavity and to flow out of said cavity by passing unimpeded through the interstices between said coils.
  • a flame stop including a compressible wire spring element' having one end portion rigidly mounted and the other end portion free to vibrate in said passage.
  • a wire spring element comprising a plurality of successive coils of wire and being closed on one end portion thereof
  • said wire spring element having one end portion rigidly secured within said passage and the other end portion free to move with normal engine vibrations.
  • a crankcase ventilation system for an engine having a blowby passage extending from the engine crankcase to the air intake system, the invention comprising a compressible wire spring element in said passage comprising a plurality of successive uniform diameter coils of wire, and
  • said wire spring element having one end portion rigidly mounted in said passage and the other end free to move in said passage with normal engine vibrations.
  • crankcase ventilation system for an engine having a blowby passage extending from the engine crankcase to the air intake system
  • the invention comprising a flame stop comprising a compressible wire spring element and an end closure plug,
  • said wire spring element comprising a plurality of successive uniform diameter coils and having one end portion rigidly mounted adjacent said orifice and plunger device, and the other end portion operatively supporting said closure plug and being free to move within said passage with normal engine vibrations.
  • a crankcase ventilating system for an engine having a blowby passage extending from the engine to the air intake system, the invention comprising a flame stop comprising a wire spring element and an end closure plug,
  • said wire spring comprising a plurality of successive uniform diameter coils which are moveable to and from a position precluding induction backflring from propagating through said passage.
  • a fluid flow passage having an inlet end and an outlet end, said flow passage providing a flow path for fluid from said inlet end to said outlet end under normal conditions, said flow passage being subjected to reverse flow of fluid from said outlet end to said inlet end under abnormal conditions including relatively high pressure
  • the invention comprising expandible and contractible means, flow passage means integrally formed in said eX- pandible and contractible means having open and closed conditions dependent upon the expanded or contracted state of said expandible and contractible means, and said expandible and contractible means being arranged in said passage to move toward the expanded condition during normal flow and to move toward the contracted condition during abnormal flow.
  • said expandible and contractible means comprises continuous wire means having a plurality of coils, the distance between adjacent coils of said wire means in the normal expanded condition being sufliciently wide to permit substantially unimpeded flow of fluid from said inlet to said outlet, and the distance between adjacent coils of said wire means and the compressibility of said spring being such that said coils are movable toward one another a sufficient distance as a result of high pressure introduced at the outlet end to restrict passage of undesirable elements from said outlet and to said inlet end.
  • wire means wound into a plurality of axially extending coils and mounted in said passage means to control flow conditions therein, said coils defining an internal fluid passage, said coils and a surrounding peripheral surface defining an external fluid passage, said coils being spaced from one another a sufiicient distance to permit the free flow of fluid therethrough from one passage to the other passage in one condition, said coils being compressible to limit the free flow of fluid therethrough in another condition, one end of said wire means being restrained relative to the other end of said wire means, and a reaction surface provided at theother end of said wire means to impart axial forces to said wire means from fluid in said passage means sufficient to move said coils under predetermined flow conditions between the one and the other condition.
  • fluid passage means In a fluid system subjected to vibration in use and to contamination by fluids therein, fluid passage means,

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)
  • Check Valves (AREA)
US308889A 1963-09-13 1963-09-13 Spring Expired - Lifetime US3170448A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
US308889A US3170448A (en) 1963-09-13 1963-09-13 Spring
GB37146/64A GB1073755A (en) 1963-09-13 1964-09-10 Internal combustion engine crankcase ventilation system
BE652924D BE652924A (xx) 1963-09-13 1964-09-10
LU46924D LU46924A1 (xx) 1963-09-13 1964-09-10
NL6410629A NL6410629A (xx) 1963-09-13 1964-09-11
DEW37535A DE1294090B (de) 1963-09-13 1964-09-11 Rueckschlag-Absperrventil in der Entlueftungsleitung eines Brennkraftmaschinen-Kurbelgehaeuses

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US308889A US3170448A (en) 1963-09-13 1963-09-13 Spring

Publications (1)

Publication Number Publication Date
US3170448A true US3170448A (en) 1965-02-23

Family

ID=23195807

Family Applications (1)

Application Number Title Priority Date Filing Date
US308889A Expired - Lifetime US3170448A (en) 1963-09-13 1963-09-13 Spring

Country Status (6)

Country Link
US (1) US3170448A (xx)
BE (1) BE652924A (xx)
DE (1) DE1294090B (xx)
GB (1) GB1073755A (xx)
LU (1) LU46924A1 (xx)
NL (1) NL6410629A (xx)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3280808A (en) * 1965-01-04 1966-10-25 Ford Motor Co Engine crankcase ventilating system
US3364910A (en) * 1966-03-24 1968-01-23 Auto Quip Inc Flow restricting means for crankcase ventilation systems
US3469565A (en) * 1967-08-17 1969-09-30 Caterpillar Tractor Co Crankcase ventilating means for internal combustion engines
US3494339A (en) * 1967-06-14 1970-02-10 John Jame Fernandez Self-cleaning smog control filter and fire trap for internal combustion engines
US3589347A (en) * 1968-07-17 1971-06-29 Nissan Motor Crankcase ventilation system
CN116874068A (zh) * 2023-09-08 2023-10-13 山东零净环保节能科技有限公司 一种焦沫去除焦化废水cod的装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US958944A (en) * 1909-09-13 1910-05-24 Alden A Steward Fire-check.
US1800977A (en) * 1929-09-05 1931-04-14 Protectoseal Company Of Americ Fire baffle
US2686504A (en) * 1951-01-24 1954-08-17 Hill Walter Pearl Filter for engine crankcases
US2906252A (en) * 1956-08-28 1959-09-29 Int Harvester Co Crankcase ventilating system for internal combustion engines
US3030942A (en) * 1961-09-22 1962-04-24 William O Thompson Crankcase ventilation system

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR781437A (fr) * 1934-02-07 1935-05-15 Appareil anti-retour de flammes aux carburateurs de moteurs à explosion
US3051151A (en) * 1961-08-28 1962-08-28 Helwig Carl Crankcase ventilator for automotive vehicles

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US958944A (en) * 1909-09-13 1910-05-24 Alden A Steward Fire-check.
US1800977A (en) * 1929-09-05 1931-04-14 Protectoseal Company Of Americ Fire baffle
US2686504A (en) * 1951-01-24 1954-08-17 Hill Walter Pearl Filter for engine crankcases
US2906252A (en) * 1956-08-28 1959-09-29 Int Harvester Co Crankcase ventilating system for internal combustion engines
US3030942A (en) * 1961-09-22 1962-04-24 William O Thompson Crankcase ventilation system

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3280808A (en) * 1965-01-04 1966-10-25 Ford Motor Co Engine crankcase ventilating system
US3364910A (en) * 1966-03-24 1968-01-23 Auto Quip Inc Flow restricting means for crankcase ventilation systems
US3494339A (en) * 1967-06-14 1970-02-10 John Jame Fernandez Self-cleaning smog control filter and fire trap for internal combustion engines
US3469565A (en) * 1967-08-17 1969-09-30 Caterpillar Tractor Co Crankcase ventilating means for internal combustion engines
US3589347A (en) * 1968-07-17 1971-06-29 Nissan Motor Crankcase ventilation system
CN116874068A (zh) * 2023-09-08 2023-10-13 山东零净环保节能科技有限公司 一种焦沫去除焦化废水cod的装置
CN116874068B (zh) * 2023-09-08 2023-11-14 山东零净环保节能科技有限公司 一种焦沫去除焦化废水cod的装置

Also Published As

Publication number Publication date
LU46924A1 (xx) 1964-11-10
GB1073755A (en) 1967-06-28
DE1294090B (de) 1969-04-30
BE652924A (xx) 1964-12-31
NL6410629A (xx) 1965-03-15

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