US1599723A - Carburetor - Google Patents

Carburetor Download PDF

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Publication number
US1599723A
US1599723A US611621A US61162123A US1599723A US 1599723 A US1599723 A US 1599723A US 611621 A US611621 A US 611621A US 61162123 A US61162123 A US 61162123A US 1599723 A US1599723 A US 1599723A
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Prior art keywords
valve
valve body
chamber
casing
carburetor
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Expired - Lifetime
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US611621A
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Schneeberger Fritz
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Individual
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    • 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
    • F02M9/00—Carburettors having air or fuel-air mixture passage throttling valves other than of butterfly type; Carburettors having fuel-air mixing chambers of variable shape or position
    • F02M9/08—Carburettors having air or fuel-air mixture passage throttling valves other than of butterfly type; Carburettors having fuel-air mixing chambers of variable shape or position having throttling valves rotatably mounted in the passage
    • F02M9/085—Fuel spray nozzles in the throttling valves
    • 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
    • F02M23/00—Apparatus for adding secondary air to fuel-air mixture
    • F02M23/02—Apparatus for adding secondary air to fuel-air mixture with personal control, or with secondary-air valve controlled by main combustion-air throttle
    • F02M23/03—Apparatus for adding secondary air to fuel-air mixture with personal control, or with secondary-air valve controlled by main combustion-air throttle the secondary air-valve controlled by main combustion-air throttle
    • 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
    • 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
    • Y10S261/24—Fuel feeding valve retaining

Definitions

  • This invention relatesto a carburetor for internal-combustion engines and of the kind in which the fuel is led from the fio/at chamber to the mixing chamber through the throttle valve.
  • Fig. 1 of the accompanying drawings represents a vertical section of the carburetor
  • FIG. 2 another vertical section taken on the line 2-2 of Fig. 1, and
  • Fig. 4 is a vertical section showing the valve body in a different position to that of Fig. 1,
  • Fig. 5 is a vertical section showing a valve body of modified construction.
  • the carburetor comprises a float chamber s, a valve casing a and a mixing chamber b.
  • the valve casinor guides a hollow semi-cylindrical valve iody o adapted to rotate about a horizontal axis when actuated by an operating lever r.
  • the valve controls the inlet to the mixing chamber b which is arranged tangentially to the same.
  • Atmospheric air is admitted to the mixing chamber along the straight side of the valve, as indicated by the arrow I, the admission, which is regulated by a rotary adjustment of the valve, being dependent upon the distance of the edge y of the valve from the edge .a of the valve casing.
  • valve body In the eXtreme open position of the valve, additional air is admitted through the valve body, as indicated by the arrow II, the curved wall of the valve body beingprovided with ports c3 whose effective area is also regulated by the adjustment of the valve. formed with a radial chamber which communicates with a central cone o1.
  • a seat which is made for the latter in the casing a communicates through a duct f with the float chamber which thus maintains the fuel at a level a: in the radial valve chamber.
  • the nozzle d which terminates the chamber is situated at the circumference of the valve body, near the edge g/ so as to be traversed 3y the current of the incoming air.
  • valve chamber communicates with the atmosphere through a narrow duct g opening at the front of the valve body c.
  • the valve is ing opened.
  • the nozzle Z is situated near the level of the liquid and outside the valve casing so that air willbe sucked in through the nozzle and led, together with the necessary fuel, through the ducts e and m to the mixing chamber.
  • the capacity of the duct m can be regulated by means of a screw lc.
  • valve body d1 A still further adjustment of the valve body to the right, sets the nozzle body d1 free so that it can be unscrewed for cleaning or for renewal.
  • valve body c is inserted axially into its seat and is held inposition by a spring o which can be turned aside without tools so as to release the valve and allow it to be removed from the casing.
  • the nozzle Z is situated outside the valve body and forms the only communication of the fuel supply with the mixing chamber t.
  • the orifice is situated somewhat below the edge y within the circumference of the valve body. Vihile the valve is closed, as shown in Fig. 5, the motor will act as a brake, for instance while the machine is running downhill.
  • a hollow semicylindrical valve body having a fuel nozzle arranged radially along its straight side and circumferential distanced ports, a casing holding the valve body rotatively and allowing it to be inserted and withdrawn in axial direction, means for retaining the valve ⁇ body in position, the casing being adapted to admit atomizing air into the mixing chamber past the straight side of the valve body in all open positions of the latter and additional air through the ports of the ⁇ valve body only in the fully opened position of the same, one Wall of the mixing chamber being arranged tangentially to the Casing so as to lead the atomizing air across the fuel jet.

Description

Sept. 14 1926.
Y F. SCHNEEBERGER CARBURET O R Filed Jan. V9, 1925 IIIIIA'III III,
Patented Sept. 14, 1926.
UNITED srarrzs FRITZ SGHNEEBERGER, OF BERNE, SIVITZERLAND. i
CARBURETOR.
Application led January 9, 1923, Serial No. 611,621, and in Germany Gc-tober 12, 1922.
This invention relatesto a carburetor for internal-combustion engines and of the kind in which the fuel is led from the fio/at chamber to the mixing chamber through the throttle valve.
Fig. 1 of the accompanying drawings represents a vertical section of the carburetor,
Fig. 2, another vertical section taken on the line 2-2 of Fig. 1, and
Fig. 3, a horizontal section taken on the line 3 3 of Fig. l,
Fig. 4 is a vertical section showing the valve body in a different position to that of Fig. 1,
Fig. 5 is a vertical section showing a valve body of modified construction.
The carburetor comprises a float chamber s, a valve casing a and a mixing chamber b. The valve casinor guides a hollow semi-cylindrical valve iody o adapted to rotate about a horizontal axis when actuated by an operating lever r. The valve controls the inlet to the mixing chamber b which is arranged tangentially to the same. Atmospheric air is admitted to the mixing chamber along the straight side of the valve, as indicated by the arrow I, the admission, which is regulated by a rotary adjustment of the valve, being dependent upon the distance of the edge y of the valve from the edge .a of the valve casing. In the eXtreme open position of the valve, additional air is admitted through the valve body, as indicated by the arrow II, the curved wall of the valve body beingprovided with ports c3 whose effective area is also regulated by the adjustment of the valve. formed with a radial chamber which communicates with a central cone o1. A seat which is made for the latter in the casing a, communicates through a duct f with the float chamber which thus maintains the fuel at a level a: in the radial valve chamber. The nozzle d which terminates the chamber is situated at the circumference of the valve body, near the edge g/ so as to be traversed 3y the current of the incoming air. There is also a duct e leading from the lower part of the chamber to the circumference of the valve body and opening at a point near the port c3. The valve chamber communicates with the atmosphere through a narrow duct g opening at the front of the valve body c.
The valve is ing opened.
With the valve in the `position shown in Fig. 4: the direct air admission is closed,
and the duct e communicates with the mixing chamber through a chiot m in the valve casing. The nozzle Z is situated near the level of the liquid and outside the valve casing so that air willbe sucked in through the nozzle and led, together with the necessary fuel, through the ducts e and m to the mixing chamber. The capacity of the duct m can be regulated by means of a screw lc.
A still further adjustment of the valve body to the right, sets the nozzle body d1 free so that it can be unscrewed for cleaning or for renewal.
The valve body c is inserted axially into its seat and is held inposition by a spring o which can be turned aside without tools so as to release the valve and allow it to be removed from the casing. f
In the modified construction of the valve according to Fig. 5, the nozzle Z is situated outside the valve body and forms the only communication of the fuel supply with the mixing chamber t. The orifice is situated somewhat below the edge y within the circumference of the valve body. Vihile the valve is closed, as shown in Fig. 5, the motor will act as a brake, for instance while the machine is running downhill.
I claim 1. In a carburetor of the character described, a hollow semicylindrical valve body having a fuel nozzle arranged radially along its straight side and circumferential distanced ports, a casing holding the valve body rotatively and allowing it to be inserted and withdrawn in axial direction, means for retaining the valve `body in position, the casing being adapted to admit atomizing air into the mixing chamber past the straight side of the valve body in all open positions of the latter and additional air through the ports of the `valve body only in the fully opened position of the same, one Wall of the mixing chamber being arranged tangentially to the Casing so as to lead the atomizing air across the fuel jet.
body. n FRITZ SCHNEEBERGER.
US611621A 1922-10-12 1923-01-09 Carburetor Expired - Lifetime US1599723A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1599723X 1922-10-12

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