US3852381A - Carburetor - Google Patents

Carburetor Download PDF

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Publication number
US3852381A
US3852381A US00343554A US34355473A US3852381A US 3852381 A US3852381 A US 3852381A US 00343554 A US00343554 A US 00343554A US 34355473 A US34355473 A US 34355473A US 3852381 A US3852381 A US 3852381A
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US
United States
Prior art keywords
valve
passage
branch
fuel
mixture conduit
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
US00343554A
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English (en)
Inventor
S Mick
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.)
Motors Liquidation Co
Original Assignee
General Motors Corp
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 General Motors Corp filed Critical General Motors Corp
Priority to US00343554A priority Critical patent/US3852381A/en
Priority to CA188,314A priority patent/CA984243A/en
Priority to GB1025974A priority patent/GB1437693A/en
Priority to DE2412050A priority patent/DE2412050A1/de
Priority to AU66679/74A priority patent/AU477277B2/en
Priority to IT7449374A priority patent/IT1008442B/it
Priority to FR7409747A priority patent/FR2222543B1/fr
Priority to JP49031642A priority patent/JPS5249526B2/ja
Application granted granted Critical
Publication of US3852381A publication Critical patent/US3852381A/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
    • 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
    • F02M25/08—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding fuel vapours drawn from engine fuel reservoir
    • 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
    • F02M17/00—Carburettors having pertinent characteristics not provided for in, or of interest apart from, the apparatus of preceding main groups F02M1/00 - F02M15/00
    • F02M17/08—Carburettors having one or more fuel passages opening in a valve-seat surrounding combustion-air passage, the valve being opened by passing air
    • F02M17/09—Carburettors having one or more fuel passages opening in a valve-seat surrounding combustion-air passage, the valve being opened by passing air the valve being of an eccentrically mounted butterfly type
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S261/00—Gas and liquid contact apparatus
    • Y10S261/67—Carburetors with vented bowl

Definitions

  • a vent switch valve responsive to the pressure in the mixture conduit downstream of the air valve vents fuel vapor from the fuel bowl alternatively to the mixture conduit air inlet and [56] ReferencesCited 2 to a fuel vapor storage canlster.
  • This invention relates to air valvecarburetors and, more particularly, to systems in such carburetors for venting fuel vapor from the fuel bowl alternatively to the mixture conduit air inlet and to a fuel vapor storage canister and for purging fuel vapor from the canister.
  • This invention provides an air valve carburetor with provision for purging fuel vapor into the mixture conduit through a port adjacent and traversed by the upstream edge of the air valve.
  • the relatively constant subatmospheric pressure below the air valve induces a flow of purge air and fuel vapor through the purge passage from the fuel vapor storage canister. This purge flow is increased from a minimum when the port is upstream of the air valve to a maximum when the port has been traversed by the air valve.
  • the fuel vapor storage canister also received fuel vapor from the carburetor fuel bowl.
  • the fuel vapors were vented from the fuel bowl alternatively to the canister or to the carburetor mixture conduit air inlet past a vent switch valve operated both bymanifold vacuum and by linkage from the throttle.
  • This invention also provides an air valve carburetor with a vent switch valve responsive to the pressure in the mixture conduit downstream of the air valve. That pressure, which is substantially constant during engine operation, controls the vent switch valve without requiring supplemental control by throttle-connected linkage.
  • FIG. I is a sectional elevational view of the carburetor showing the basic metering linkage
  • FIGS. 2 and 3 are enlarged views of the metering rod showing the configuration of the tapered portion
  • FIG. 4 is a view similar to FIG. I showing the vent switch valve and fuel vapor storage canister purge systems.
  • the carburetor has a mixture conduit 12 including an air inlet I4 and a mixture outlet I6 which discharges to the engine.
  • a throttle I8 is disposed in mixture outlet I6 in the usual manner on a throttle shaft 20.
  • An air valve 22 is disposed in air inlet 14 on an air valve shaft 24.
  • a spring 26 is hooked over the downstream edge 28 of air valve 22 and extends to a bracket 30 to bias air valve 22 to the position shown.
  • a tang 32 reaches upwardly from air valve 22 and is connected by a link 34 to a diaphragm 36.
  • a chamber 46 defined between the left side of diaphragm 36 and a cover member 48, is subjected to substantially atmospheric pressure, present in air inlet 14 and in the air cleaner (not shown), through openings such as 50, 52 and 54. (The air cleaner seats on a rim 56 disposed about the upper portion of carburetor 10.)
  • chamber 38 is subjected to the subatmospheric pressure created in region 44 as throttle I8 is opened, and diaphragm 36 acts through link 34 to pull air valve 22 clockwise to an open position.
  • Spring 26 is effective to balance the opening force of diaphragm 36, thereby creating a substantially constant subatmospheric pressure in region 44.
  • a tab 58 extends upwardly from air valve 22 and is connected through a link 60 to one end 62 of a lever 64.
  • the opposite end 66 of lever 64 is pivoted about a pin 68.
  • a hanger 70 extends from lever 64 into the carburetor fuel bowl 72.
  • the lower end 74 of hanger 70 has a hook 76 which is receivedin a recess 78 formed in a metering rod 80.
  • hanger 70 extends through an opening 82 in the cover 84 for fuel bowl 72. Opening 82 is closed by a slider 86 which shifts horizontally during movement of hanger 70.
  • Metering rod is disposed in a fuel passage 88 having its lower end 90 disposed to receive fuel from a well 92 formed in the bottom of fuel how] 72.
  • the upper end 94 of fuel passage 88 has an opening 96 through which fuel is discharged into region 44 of mixture conduit 12. It will be appreciated, therefore, that the fuel in fuel bowl 72 is subjected to a substantially constant metering head from the substantially atmospheric pressure in the upper portion of the fuel bowl to the generally constant pressure in region 44.
  • a metering jet or orifice 98 is disposed in fuel passage 88 around the tip 99 of metering rod 80.
  • metering rod-80 has flat tapered surfaces 100 on opposite sides which, upon reciprocation of metering rod 80 in jet 98, varies the area available for fuel flow through jet 98.
  • A' spring 102 extends from an annular ledge 104 formed in fuel passage 88 to the lower end 106 of metering rod 80 to take up any slack in the linkage and to load metering rod 80 against jet 98.
  • metering rod 80 increases from the end of surfaces I00 most closely adjacent passage inlet. 90 to tip 99. Tip 99 is therefore enlargedand assists in discharging fuel from fuel passage 88 as air valve 22 and metering rod 80 are moved to increase air. and fuel flow. This offsets the greater inertia of the fuel which otherwise could create a mixture temporarily leaner than desired.
  • fuel bowl 72 is vented through a passage 110 formed in cover member 84.
  • Passage 110 extends to a vent chamber 112 formed between a lower member 114 and an intermediate member 116.
  • a branch passage 118, formed in lower member 114 extends past a valve seat 120 to a valve chamber 122 formed between lower member 114 and fuel bowl cover member'84.
  • a vertical passage 124 opens from valve chamber 122 to a horizontal passage 126 containing a tube fitting 128.
  • a tube 130 extends from fitting 128 to a fuel vapor storage canister 132, such as that disclosed in U.S. Pat. No. 3,683,597, for example.
  • a signal passage 134 extends from a port 136 in region 44 to a chamber 138 defined between a diaphragm 140 and an upper member 142.
  • the substantially constant subatmospheric pressure created in region 44 is'adequate to overcome the bias of a spring 144 or other device such as a weight and lift diaphragm 140 awayfrom a valve seat 146.
  • a valve stem 148 secured to diaphragm 140 lifts a valve disc 150 away from a valve seat 152 i into engagement with valve seat 120.
  • fuel vapor evolved in fuel bowl 72 may not be directed from vent chamber 112 through branch passage 118 as that route is blocked by engagement of valve disc 150 with valve seat 120. Instead fuel vapor is directed from vent chamber 112 through a branch passage 154 past valve seat 146 into a chamber 156 formed between diaphragm 140 and intermediate member 116. Chamber 156 is open through one or more apertures 159 to the region within air cleaner rim 56, and thus as indicated by the broken line, fuel vapor is directed to the mixture conduit air inlet 14 for delivery to the engine.
  • the pressure in fuel bowl 72 above the fuel level is equalized with that in mixture conduit air inlet 14 as is usually required for accurate fuel metering.
  • valve disc 150 is slidably mounted on valve stem 148 and is biased toward valve seat 152 by a spring 160. This construction permits simultaneous engagement of valve disc 148 against valve seat 152 and diaphragm 140 against valve seat 146 without requiring close tolerances therebetween.
  • valve disc 150 is disengaged from valve seat 152 during engine operation. This opens a passage 162 (coaxialwith branch passages 154 and 118) from valve chamber 122 to a horizontal passage 164. Passage 164 is coaxial with passage 126 and is separated therefrom by a plug 166 seated against a shoulder 168. Passage 164 extends to a passage 170 which opens through a port 172 to mixture conduit 12.
  • the subatmospheric pressure in mixture conduit 12 draws air through fuel vapor storage canister 132, and the air and purged fuel vapor are drawn through tube 130, fitting 128, passages 126 and 124, valve chamber 122, valve seat 152, passages 162, 164 and 170, and port 172 to mixture conduit 12 for deliveryto the engine.
  • port 172 is disposed completely upstream of air valve 22 and the rate of flow of purge air and purged fuel vapor is at a minimum; in'many applications the depression upstream of air valve 22 (caused by the air cleaner) may be insufficient to cause any purge flow.
  • An internal combustion engine carburetor comprising a mixture conduit, an air valve disposed in said mixture conduit, means controlling said air valve to maintain a region of substantially constant subatmospheric pressure in said mixture conduit downstream from said air valve during engine operation, a fuel bowl containing fuel up to a certain level therein, a fuel vapor passage opening from said fuel bowl above said level, said fuel vapor passage having a first branch extending to said mixture conduit and a second branch, valve means disposed in said vapor passage for alternatively directing the flow of fuel vapor through said first and second branches, said valve means including a diaphragm responsive to the pressure in said region to position said valve means for directing the flow of fuel vapor from said fuel bowl through said first branch to said mixture. conduit during engine operation and for directing the flow of fuel vapor from said fuel bowl through said second branchwhen the engine is not operating.
  • a carburetor comprising a mixture conduit, an air valve disposed in said conduit, means controlling said air valve to maintain a region of substantially constant subatmospheric pressure in said mixture conduit downstream of said air valve during engine operation, a purge passage adapted for connection to said fuel vapor storage device and opening into said region whereby the subatmospheric pressure therein may purge fuel vapor from said device into said region for delivery to the engine when the engine is operating, a fuel bowl containing fuel up to a certain level, a vent passage opening from said fuel bowl above said level, said vent passage having a first branch extending to said mixture conduit for delivering fuel vapor from said fuel bowl to the engine when the engine is operating and a second branch extending to said purge passage for delivering fuel vapor from said fuel bowl to said fuel vapor storage device when the engine is not operating, valve means disposed in said passage, means biasing said valve means to prevent the flow of fuel vapor through said first branch and to permit the flow of
  • a carburetor comprising a mixture conduit, an air valve disposed in said mixture conduit, means controlling said carburetor to maintain a region of substantially constant subatmospheric pressure in said mixture conduit downstream of said air valve during engine operation, a purge passage adapted for connection to said fuel vapor storage device and extending to said mixture conduit, a fuel bowl containing fuel up to a certain level, a cover member secured over said fuel bowl, lower, intermediate and upper members secured to said cover member, vent passage extending from said fuel bowl through said cover member and said lower member to a vent chamber defined between said lower and intermediate members, a first branch passage extending from said vent chamber to a valve chamber defined between said lower and cover members, said purge passage extending through said valve chamber and having a portion disposed coaxially with said branch passage, a diaphragm clamped between said intermediate and upper members, a second branch passage extending from said vent chamber to a chamber defined between said diaphragm and said
  • a carburetor comprising a mixture conduit, an air valve disposed in said mixture conduit and rotatable between closed and open positions, means controlling said carburetor to maintain a region of substantially constant subatmospheric pressure in said mixture conduit downstream of said air valve during engine operation, a purge passage adapted for connection to said fuel vapor storage device and having a port disposed in said mixture conduit adjacent the upstream edge of said air valve when said air valve is in said closed position and traversed by the upstream edge of said air valve as said air valve is rotated from said closed position, whereby the pressure in said mixture conduit may induce a flow of fuel vapor from said storage device through said purge passage to said mixture conduit which may be increased from a minimum when said air valve is in said closed position to a selected value when the upstream edge of said air valve has traversed said port, a fuel bowl containing fuel up to a certain level, a cover member secured over said fuel bowl, lower, intermediate and upper members secured to
  • An internal combustion engine carburetor comprising a mixture conduit, an air valve disposed in said mixture conduit, means controlling said air valve to maintain a region of substantially constant subatmospheric pressure in said mixture conduit downstream from said air valve during engine operation, a fuel bowl containing fuel up to a certain level therein, a fuel vapor passage opening from said fuel bowl above said level, said fuel vapor passage having a first branch extending to said mixture conduit and a second branch extending to a fuel vapor storage device, valve means disposed in said vapor passage for controlling the flow of fuel vapor through said second branch, said valve means including a diaphragm responsive to the pressure in said region to position said valve means for restricting the flow of fuel vapor from said fuel bowl through said second branch during engine operation and for permitting the flow of fuel vapor from said fuel bowl through said second branch when the engine is not operating.
  • a carburetor comprising a mixture conduit, an air valve disposed in said conduit, means controlling said air valve to maintain a region of substantially constant subatmospheric pressure in said mixture conduit downstream of said air valve during engine operation, a purge passage adapted for connection to said fuel vapor storage device and opening into said region whereby the subatmospheric pressure therein may purge fuel vapor from said device into said region for delivery to the engine when the engine is operating, a fuel bowl containing fuel up to a certain level, a vent passage opening from said fuel bowl above said level, said vent passage having a first branch extending to said mixture conduit for delivering fuel vapor from said fuel bowl to the engine when the engine is operating and a second branch extending to said purge passage for delivering fuel vapor from said fuel bowl to said fuel vapor storage device when the engine is not operating, valve means disposed in said second branch, means biasing said valve means to permit the flow of fuel vapor through said second branch, said valve means including
  • a carburetor comprising a mixture conduit, an air valve disposed in said mixture conduit, means controlling said carburetor to maintain a region of substantially constant subatmospheric pressure in said mixture conduit downstream of said air valve during engine operation, a purge passage adapted for connection to said fuel vapor storage device and extending to said mixture conduit, a fuel bowl containing fuel up to a certain level, a cover member secured over said fuel bowl, lower and upper members secured to said cover member, a vent passage extending from said fuel bowl through said cover member and said lower member to a vent chamber defined between said lower and upper members, a branch passage extending from said vent chamber to a valve chamber defined between said lower and cover members, said purge passage extending through said valve chamber and having a portion disposed coaxially with said branch passage, adiaphragm clamped between said lower and upper members, valve seats formed in said valve chamber about said branch passage and said purge passage, a valve stem secured to said diaphrag
  • a carburetor comprising a mixture conduit, an air valve disposed in said mixture conduit and rotatable between closed and open positions, means controlling said carburetor to maintain a region of substantially constant subatmospheric pressure in said mixture conduit downstream of said air valve during engine operation, a purge passage adapted for connection to said fuel vapor storage device and having a port disposed in said mixture conduit adjacent the upstream edge of said air valve when said air valve is in said closed position and traversed by the upstream edge of said air valve as said air valve is rotated from said closed position, whereby the pressure in said mixture conduit may induce a flow of fuel vapor from said storage device through said purge passage to said mixture conduit which may be increased from a minimum when said air valve is in said closed position to a selected value when the upstream edge of said air valve has traversed said port, a fuel bowl containing fuel up to a certain level, a cover member secured over said fuel bowl, lower and upper members secured to said cover

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of The Air-Fuel Ratio Of Carburetors (AREA)
  • Supplying Secondary Fuel Or The Like To Fuel, Air Or Fuel-Air Mixtures (AREA)
US00343554A 1973-03-21 1973-03-21 Carburetor Expired - Lifetime US3852381A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
US00343554A US3852381A (en) 1973-03-21 1973-03-21 Carburetor
CA188,314A CA984243A (en) 1973-03-21 1973-12-17 Air valve carburetor with fuel bowl vent control valve
GB1025974A GB1437693A (enrdf_load_stackoverflow) 1973-03-21 1974-03-07
DE2412050A DE2412050A1 (de) 1973-03-21 1974-03-11 Vergaser fuer brennkraftmaschinen
AU66679/74A AU477277B2 (en) 1973-03-21 1974-03-15 Internal combustion engine air valve carburetters
IT7449374A IT1008442B (it) 1973-03-21 1974-03-21 Perfezionamento nei carburatori a valvola d aria per motori a combu stione interna
FR7409747A FR2222543B1 (enrdf_load_stackoverflow) 1973-03-21 1974-03-21
JP49031642A JPS5249526B2 (enrdf_load_stackoverflow) 1973-03-21 1974-03-22

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00343554A US3852381A (en) 1973-03-21 1973-03-21 Carburetor

Publications (1)

Publication Number Publication Date
US3852381A true US3852381A (en) 1974-12-03

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US00343554A Expired - Lifetime US3852381A (en) 1973-03-21 1973-03-21 Carburetor

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US (1) US3852381A (enrdf_load_stackoverflow)
JP (1) JPS5249526B2 (enrdf_load_stackoverflow)
AU (1) AU477277B2 (enrdf_load_stackoverflow)
CA (1) CA984243A (enrdf_load_stackoverflow)
DE (1) DE2412050A1 (enrdf_load_stackoverflow)
FR (1) FR2222543B1 (enrdf_load_stackoverflow)
GB (1) GB1437693A (enrdf_load_stackoverflow)
IT (1) IT1008442B (enrdf_load_stackoverflow)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4062910A (en) * 1975-07-14 1977-12-13 Ford Motor Company Carburetor fuel bowl vent control
US4134378A (en) * 1977-10-03 1979-01-16 General Motors Corporation Balance tube fuel bowl vent system
US4153018A (en) * 1975-07-31 1979-05-08 Ntn Toyo Bearing Co. Ltd. Air flow measuring device for internal combustion engines
US4157366A (en) * 1978-03-13 1979-06-05 Acf Industries, Incorporated Apparatus for venting fuel vapors
US4283356A (en) * 1978-05-16 1981-08-11 Aisan Industry Co., Ltd. Carburetor for internal combustion engines
US4285312A (en) * 1975-07-31 1981-08-25 Ntn Toyo Bearing Co., Ltd. Air flow measuring device for internal combustion engines
US4376738A (en) * 1981-09-11 1983-03-15 Reinmuth A I Carburetion control apparatus
US4448734A (en) * 1981-10-31 1984-05-15 Fuji Jukogyo Kabushiki Kaisha Carburetor
WO2001074617A3 (en) * 2000-03-31 2002-04-25 Siemens Automotive Inc Pressure sensing diaphragm structure
US20090056662A1 (en) * 2007-09-04 2009-03-05 Vogt Nathan R Externally Vented Carburetor System with Vapor Containment

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE8101638L (sv) * 1980-04-25 1981-10-26 Borg Warner Varmaterstartsventil for membranforgasare

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3198498A (en) * 1961-10-09 1965-08-03 Sibe Pressure carburetors
US3322408A (en) * 1965-09-01 1967-05-30 Gen Motors Corp Carburetor
US3392965A (en) * 1967-02-13 1968-07-16 Ford Motor Co Fuel metering system for an air valve carburetor
DE1280617B (de) * 1963-06-18 1968-10-17 Motor Np Vergaser fuer Brennkraftmaschinen
US3460522A (en) * 1966-05-16 1969-08-12 Exxon Research Engineering Co Evaporation control device-pressure balance valve
US3540423A (en) * 1969-01-17 1970-11-17 Westvaco Corp Evaporative emission control system
US3548797A (en) * 1967-10-09 1970-12-22 Hitachi Ltd Fuel evaporation preventing device
US3618578A (en) * 1969-08-01 1971-11-09 British Motor Corp Ltd Motor vehicle fuel systems
US3683597A (en) * 1970-09-17 1972-08-15 Gen Motors Corp Evaporation loss control

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3198498A (en) * 1961-10-09 1965-08-03 Sibe Pressure carburetors
DE1280617B (de) * 1963-06-18 1968-10-17 Motor Np Vergaser fuer Brennkraftmaschinen
US3322408A (en) * 1965-09-01 1967-05-30 Gen Motors Corp Carburetor
US3460522A (en) * 1966-05-16 1969-08-12 Exxon Research Engineering Co Evaporation control device-pressure balance valve
US3392965A (en) * 1967-02-13 1968-07-16 Ford Motor Co Fuel metering system for an air valve carburetor
US3548797A (en) * 1967-10-09 1970-12-22 Hitachi Ltd Fuel evaporation preventing device
US3540423A (en) * 1969-01-17 1970-11-17 Westvaco Corp Evaporative emission control system
US3618578A (en) * 1969-08-01 1971-11-09 British Motor Corp Ltd Motor vehicle fuel systems
US3683597A (en) * 1970-09-17 1972-08-15 Gen Motors Corp Evaporation loss control

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4062910A (en) * 1975-07-14 1977-12-13 Ford Motor Company Carburetor fuel bowl vent control
US4153018A (en) * 1975-07-31 1979-05-08 Ntn Toyo Bearing Co. Ltd. Air flow measuring device for internal combustion engines
US4285312A (en) * 1975-07-31 1981-08-25 Ntn Toyo Bearing Co., Ltd. Air flow measuring device for internal combustion engines
US4134378A (en) * 1977-10-03 1979-01-16 General Motors Corporation Balance tube fuel bowl vent system
US4157366A (en) * 1978-03-13 1979-06-05 Acf Industries, Incorporated Apparatus for venting fuel vapors
US4283356A (en) * 1978-05-16 1981-08-11 Aisan Industry Co., Ltd. Carburetor for internal combustion engines
US4376738A (en) * 1981-09-11 1983-03-15 Reinmuth A I Carburetion control apparatus
US4448734A (en) * 1981-10-31 1984-05-15 Fuji Jukogyo Kabushiki Kaisha Carburetor
WO2001074617A3 (en) * 2000-03-31 2002-04-25 Siemens Automotive Inc Pressure sensing diaphragm structure
US20090056662A1 (en) * 2007-09-04 2009-03-05 Vogt Nathan R Externally Vented Carburetor System with Vapor Containment

Also Published As

Publication number Publication date
JPS49127030A (enrdf_load_stackoverflow) 1974-12-05
FR2222543B1 (enrdf_load_stackoverflow) 1979-09-28
CA984243A (en) 1976-02-24
FR2222543A1 (enrdf_load_stackoverflow) 1974-10-18
AU6667974A (en) 1975-09-18
GB1437693A (enrdf_load_stackoverflow) 1976-06-03
IT1008442B (it) 1976-11-10
DE2412050A1 (de) 1974-10-10
JPS5249526B2 (enrdf_load_stackoverflow) 1977-12-17
AU477277B2 (en) 1976-10-21

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