US1026732A - Apparatus for distributing fuel in internal-combustion engines. - Google Patents

Apparatus for distributing fuel in internal-combustion engines. Download PDF

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Publication number
US1026732A
US1026732A US60449611A US1911604496A US1026732A US 1026732 A US1026732 A US 1026732A US 60449611 A US60449611 A US 60449611A US 1911604496 A US1911604496 A US 1911604496A US 1026732 A US1026732 A US 1026732A
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chamber
fuel
pump
combustion engines
distributing
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US60449611A
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Hans Th Bruns
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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
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/20—Varying fuel delivery in quantity or timing
    • F02M59/36—Varying fuel delivery in quantity or timing by variably-timed valves controlling fuel passages to pumping elements or overflow passages
    • F02M59/366—Valves being actuated electrically

Definitions

  • This invention relates to an improved apparatus for'distributing fuel in internal combustion engines.
  • the fuel such as benzin, petroleum, or heavy oils
  • the fuel is supplied to the spraying jets or nozzles at regular intervals of time, either by automatic flow under an unvaryin head of pressure, by means of constant a r pressure, or by means of a special pump.
  • the present invention is only directed to engines of the latter class, in which the fuel is supplied to the cylinders by means of special oil pumps.
  • the fuel is drawn by the oil pumps from a reservoir communicating with the atmosphere and forced to the atomizer in suitable quantities. This method of distributing the oil is, however irregular and this defect cannot be wholly obviated by the provision of correcting means,such as present day experience has demonstrated that this method is 'not applicable at all to marine engines.
  • the engine is provided with a. se arate'closed intermediatechamber into w ich the fuel is forced by a special pum of'large capacity so that in the said cham er it will be under a given pressure.
  • the fuel is sucked from the saidchamber through a valve by means of a second pump and forced throu h a second valve and a supply conduit mto the combustion chamber or cylinder-of the motor.
  • This arrangement is also advantageous in that the main pump can be utilized for filling the supply conduits, etc., before the engine is started.
  • a discharge pipe with loaded or spring controlled valve is provided on the intermediate chamber; this discharge pipe can be connected to the tank fibats or, the like, and
  • the pump b forces the oil out of the reservoir into the said chamber a, the upper part of which may contain air, which will act as a cushion.
  • the chamber a is connected with the work chamber of the distributing pump d through a pipe (2.
  • a valve is arranged at e in the suction pipe.
  • The'piston of the pump d is marked 7, and the delivery valve 9.
  • the pressure strokes of the pump 7 force the oil drawn into the work chamber at of the pump through the valve 9 and the supply conduit it into the spraying nozzle of the combustion chamber not shown.
  • the distributing gear necessary to produce this result is 0 any known construction.
  • the regulating valve on the discharge pipe 6 of the intermediate chamber is illustrated by j.
  • My new apparatus operates as follows
  • the pump 1) forces the fuel into the intermediate chamber a to an amount in excess of what the ump d can 'deliver to theengine. There ore, the fuel in the' chamber a will be under a certain 'ressure, which is determined by the loaded valve j. If the pressure in the chamber a exceeds the load ofthe valve 7', fuel will flow from the chamber a through the pipe i back to the supply tank, from which the pump 6 pumps the fuel into the chamber a.
  • chamber 0 always a constant pressure, which will aid the suction stroke of the piston f of the delivery pump 01 so .as to completely fill the cylinder of said pump, even when a heavy oil is used as a fuel and when the engine runs at a higher speed.
  • the cylinder will not be complete y filled at each suction stroke of the pump piston and the e will be, therefore, a certain vacuum in the pump cylinder. This is entirely obviated by the fuel supply apparatus according to my invention.
  • an apparatus for. distributing fuel in internal combustion engines the combination with a fuel supply tank of an intermediate closed air-containing chamber, a pump for forcing the fuel from said suply tank into said chamber to an amount su c1ent to constantly maintain a pressure in said chamber, a conduit entering said 'chamber, and a second pump connected to; said conduit for deliverin fuel from the chamber to the engine,an a valve in said conduit intermediate the chamber and said second pump, and a discharge pipe connected to said chamber, and a loaded valve in said discharge pipe adapted to automatically control the pressure 1n said chamber.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)

Description

H. T. BRUN S.
APPARKTUS FOR DISTRIBUTING .FUEL IN INTERNAL COMBUSTION ENGINES.
APPLIOATION FILED 11111.24, 1911.
1,026,732. Patented May 21, 1912.
[dz/[IIIII/IIIIIIIIIIIIIIK UNITED STATES PATENT OFFICE.
HANS TH. BRUNS, OF NUREMBERG, GERMANY.
APPARATUS FOR DISTRIBUTING FUEL IN INTERNAIPCOMBUSTION ENGINES; I I
peciflcat1on of Letters Patent.
To'all whom it may concern.
Be it known that I',HANs TH. BRUNS, a subject of the King of Prussia, residing at Nuremberg, in the Kingdom of Bavaria and German Empire, have invented an Improved Apparatus for Distributing Fuel in Internal-Combustion Engines, of which the following is a specif cation.
This invention relates to an improved apparatus for'distributing fuel in internal combustion engines.
In internal combustion engines the fuel, such as benzin, petroleum, or heavy oils, is supplied to the spraying jets or nozzles at regular intervals of time, either by automatic flow under an unvaryin head of pressure, by means of constant a r pressure, or by means of a special pump. The present invention is only directed to engines of the latter class, in which the fuel is supplied to the cylinders by means of special oil pumps. In the known machines of this kind the fuel is drawn by the oil pumps from a reservoir communicating with the atmosphere and forced to the atomizer in suitable quantities. This method of distributing the oil is, however irregular and this defect cannot be wholly obviated by the provision of correcting means,such as present day experience has demonstrated that this method is 'not applicable at all to marine engines.
According to my present invention, the engine is provided with a. se arate'closed intermediatechamber into w ich the fuel is forced by a special pum of'large capacity so that in the said cham er it will be under a given pressure. The fuel is sucked from the saidchamber through a valve by means of a second pump and forced throu h a second valve and a supply conduit mto the combustion chamber or cylinder-of the motor. It is essential that the oil should always completely fill the work chambers of the distributing pumps as the oil in the intermediate chamber is subjected to excess pressure. This arrangement is also advantageous in that the main pump can be utilized for filling the supply conduits, etc., before the engine is started. In order to regulate the pressure conditions in the oil chambers and for the purpose of emptying them, if necessary, a discharge pipe with loaded or spring controlled valve is provided on the intermediate chamber; this discharge pipe can be connected to the tank fibats or, the like, and
so that the oil flowing oflf returns into the storage tank or reservoir. l
The invention is illustrated diagrammatically by way of example in the accompanying drawing.
a indicates the The pump b forces the oil out of the reservoir into the said chamber a, the upper part of which may contain air, which will act as a cushion. The chamber a is connected with the work chamber of the distributing pump d through a pipe (2. A valve is arranged at e in the suction pipe. The'piston of the pump d is marked 7, and the delivery valve 9. The pressure strokes of the pump 7 force the oil drawn into the work chamber at of the pump through the valve 9 and the supply conduit it into the spraying nozzle of the combustion chamber not shown. The distributing gear necessary to produce this result is 0 any known construction. The regulating valve on the discharge pipe 6 of the intermediate chamber is illustrated by j. My new apparatusoperates as follows The pump 1) forces the fuel into the intermediate chamber a to an amount in excess of what the ump d can 'deliver to theengine. There ore, the fuel in the' chamber a will be under a certain 'ressure, which is determined by the loaded valve j. If the pressure in the chamber a exceeds the load ofthe valve 7', fuel will flow from the chamber a through the pipe i back to the supply tank, from which the pump 6 pumps the fuel into the chamber a. Since only an excess pressure in chamber a is taken care of by the valve 9', there will bein chamber 0: always a constant pressure, which will aid the suction stroke of the piston f of the delivery pump 01 so .as to completely fill the cylinder of said pump, even when a heavy oil is used as a fuel and when the engine runs at a higher speed. In ordinary fuel supply pumps, where a heavy oil is used, and the pump runs at a hi her speed, thecylinder will not be complete y filled at each suction stroke of the pump piston and the e will be, therefore, a certain vacuum in the pump cylinder. This is entirely obviated by the fuel supply apparatus according to my invention.
Having described my invention what I claim is 1. In an apparatus for distributing fuel in internal combustion engines, .the combination with a fuel supply tank of an interintermediate chamber.
PatentedMay21,191 2.
constantly maintain a pressure in said chambar, a .conduit entering said chamber, and a second pump connected to sa1d condu1t for delivering fuel from the chamber to the engme.
3. In an apparatus for distributing fuel in internal combustion engines the combination with a fuel supply tank of an intermediate closed air-containing chamber, a pump for forcing the fuel from said supply tank into said chamber to an amount sufficient to constantly maintain a pressure in said chamber, a conduit entering said chamber, and a second pump connected to said conduit for deliverin fuel from the chamber to the engine, an a valve in said conduit intermediate the chamber and said second pump.
4. In an apparatus for. distributing fuel in internal combustion engines, the combination with a fuel supply tank of an intermediate closed air-containingi chamber, a pump for forcing fuel from sai sup ly tank into said chamber to an amount su c1ent to constantly maintain a pressure in said chamber, a second pump connected to said chamber and adapted to deliver fuel therefrom to the engine,.a discharge i e connected to said chamber and a loa e valve in said discharge pipe, adapted to automatically control the pressure in said'chamber.
5. In an apparatus for. distributing fuel in internal combustion engines the combination with a fuel supply tank of an intermediate closed air-containing chamber, a pump for forcing the fuel from said suply tank into said chamber to an amount su c1ent to constantly maintain a pressure in said chamber, a conduit entering said 'chamber, and a second pump connected to; said conduit for deliverin fuel from the chamber to the engine,an a valve in said conduit intermediate the chamber and said second pump, and a discharge pipe connected to said chamber, and a loaded valve in said discharge pipe adapted to automatically control the pressure 1n said chamber.
In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.
HANS TH. BRUNS.
Witnesses:
RALPH W. Dox, ELISABETH HELLMUTH.
US60449611A 1911-01-24 1911-01-24 Apparatus for distributing fuel in internal-combustion engines. Expired - Lifetime US1026732A (en)

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Applications Claiming Priority (1)

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US60449611A US1026732A (en) 1911-01-24 1911-01-24 Apparatus for distributing fuel in internal-combustion engines.

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