GB1117268A - Improvements in carburation systems for internal combustion engines - Google Patents

Improvements in carburation systems for internal combustion engines

Info

Publication number
GB1117268A
GB1117268A GB14077/67A GB1407767A GB1117268A GB 1117268 A GB1117268 A GB 1117268A GB 14077/67 A GB14077/67 A GB 14077/67A GB 1407767 A GB1407767 A GB 1407767A GB 1117268 A GB1117268 A GB 1117268A
Authority
GB
United Kingdom
Prior art keywords
chamber
passage
valve
lever
spring
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
Application number
GB14077/67A
Inventor
Werner Schmid
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.)
Societe Industrielle de Brevets et dEtudes SIBE
Original Assignee
Societe Industrielle de Brevets et dEtudes SIBE
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 Societe Industrielle de Brevets et dEtudes SIBE filed Critical Societe Industrielle de Brevets et dEtudes SIBE
Publication of GB1117268A publication Critical patent/GB1117268A/en
Expired legal-status Critical Current

Links

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
    • F02M7/00—Carburettors with means for influencing, e.g. enriching or keeping constant, fuel/air ratio of charge under varying conditions
    • F02M7/10—Other installations, without moving parts, for influencing fuel/air ratio, e.g. electrical means
    • F02M7/11—Altering float-chamber pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • 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
    • F02M5/00—Float-controlled apparatus for maintaining a constant fuel level
    • F02M5/08—Float-controlled apparatus for maintaining a constant fuel level having means for venting float chambers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2700/00—Mechanical control of speed or power of a single cylinder piston engine
    • F02D2700/02—Controlling by changing the air or fuel supply
    • F02D2700/0217—Controlling by changing the air or fuel supply for mixture compressing engines using liquid fuel
    • F02D2700/0225—Control of air or mixture supply
    • F02D2700/0228—Engines without compressor
    • F02D2700/0243—Engines without compressor by means of a plurality of throttle devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
  • Control Of The Air-Fuel Ratio Of Carburetors (AREA)

Abstract

1,117,268. Carburetters. SOC INDUSTRIELLE DE BREVETS ET D'ETUDES. March 28, 1967 [April 8, 1966], No.14077/67. Heading F1B. In a curburetter in which fuel from a constantlevel chamber 5, Fig. 1, is sucked into an inlet passage 1 having an air filter 2, a single mechanism 9, 26, 21 connected to the main throttle 4 actuates three different means for venting the chamber, corresponding to normal operation, reduced fuel flow and idling or stoppage. Normal operation: With butterfly valve 4 in an intermediate position (as in Fig. 1), a spring 22 biases the two non-return valves 16, 20 on their seats 15, 19 and on the shoulders 23, 24 of rod 21 thus closing the passages 14, 18. The top part of chamber 5 communicates solely via passage 17 (or alternatively 17b) with a negative pressure zone of the inlet passage 1 thereby reducing the rate of mixture flow through jet 7. Idling operation: Valve 4 is closed as in Fig. 2 (not shown) and the screw 27 on lever 9 moves lever 26 anti-clockwise into contact with abutment 33 whilst rod 21 and valve 20 are raised against spring 22. Chamber 5 is vented via passages 13, 18 to atmosphere whilst passage 17 remains open. Full load operation: When valve 4 is opened as in Fig. 3 (not shown) beyond the position shown in Fig. 1 the spring-loaded finger 30 on lever 9 moves lever 26 clockwise thereby lowering rod 21 and valve 16 against spring 22. Chamber 5 is then vented to atmosphere via passages 13, 14 and the air entry 3 in passage 1. Thus the pressure at the top of chamber 5 is the same as that in the air entry 3 and is not reduced as in the case of normal operation. In another embodiment similar venting means are applied to a carburetter having a pistonoperated auxiliary throttle element 34, Fig. 4, actuated by the vacuum present in passage 35. Throttle 34 moves a tapered needle 36 in a calibrated orifice 37 between chamber 5a and throttling zone 6a.
GB14077/67A 1966-04-08 1967-03-28 Improvements in carburation systems for internal combustion engines Expired GB1117268A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR57158A FR1485617A (en) 1966-04-08 1966-04-08 Improvements made to fuel systems with constant level tank for internal combustion engines

Publications (1)

Publication Number Publication Date
GB1117268A true GB1117268A (en) 1968-06-19

Family

ID=8605971

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14077/67A Expired GB1117268A (en) 1966-04-08 1967-03-28 Improvements in carburation systems for internal combustion engines

Country Status (3)

Country Link
DE (1) DE1526745B1 (en)
FR (1) FR1485617A (en)
GB (1) GB1117268A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2118631A (en) * 1980-09-24 1983-11-02 Tecumseh Products Co Internally vented carburettor float bowl
GB2194595A (en) * 1986-09-02 1988-03-09 Tillotson Ltd Fuel primer for float type carburettors

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2900459A1 (en) * 1979-01-08 1980-07-17 Volkswagenwerk Ag Fuel injection system for IC engine - has tapered needle for fuel metering controlled by same regulator during part and full load running
JPS59126056A (en) * 1983-01-07 1984-07-20 Fuji Heavy Ind Ltd Carburetor controlling apparatus for supercharged engine

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR605177A (en) * 1925-01-23 1926-05-20 Carburetor mixer for internal combustion engines
DE702215C (en) * 1938-03-19 1941-02-01 Alwin Duesterloh Dipl Ing Spray carburettor with float chamber control
DE1086943B (en) * 1958-07-11 1960-08-11 Brev Etudes S I B E Soc A Resp Carburetor with float tank for internal combustion engines

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2118631A (en) * 1980-09-24 1983-11-02 Tecumseh Products Co Internally vented carburettor float bowl
GB2194595A (en) * 1986-09-02 1988-03-09 Tillotson Ltd Fuel primer for float type carburettors
GB2194595B (en) * 1986-09-02 1990-11-28 Tillotson Ltd Fuel primer for float type carburettors

Also Published As

Publication number Publication date
FR1485617A (en) 1967-06-23
DE1526745B1 (en) 1970-05-27

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