US1617501A - Fuel-feeding device for combustion engines - Google Patents

Fuel-feeding device for combustion engines Download PDF

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Publication number
US1617501A
US1617501A US402069A US40206920A US1617501A US 1617501 A US1617501 A US 1617501A US 402069 A US402069 A US 402069A US 40206920 A US40206920 A US 40206920A US 1617501 A US1617501 A US 1617501A
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US
United States
Prior art keywords
fuel
pressure
carbureter
air
pump
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
US402069A
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English (en)
Inventor
Schwerdtfeger Walter
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.)
Daimler Motoren Gesellschaft
Original Assignee
Firm Daimler Motoren Ges
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 Firm Daimler Motoren Ges filed Critical Firm Daimler Motoren Ges
Application granted granted Critical
Publication of US1617501A publication Critical patent/US1617501A/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
    • F02B1/00—Engines characterised by fuel-air mixture compression
    • 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
    • F02M2700/438—Supply of liquid to a carburettor reservoir with limitation of the liquid level; Aerating devices; Mounting of fuel filters
    • F02M2700/4388—Supply of liquid to a carburettor reservoir with limitation of the liquid level; Aerating devices; Mounting of fuel filters with fuel displacement by a pump

Definitions

  • the invention relates to a device for conducting the fuel to the suction pipe of combustion engines, to which the combustion air is temporarily supplied by a compressor or its equivalent under a pressure, which exceeds the pressure of the surrounding air.
  • This feature is to be mainly considered for the motors of aeroplanes, as such motors must be adapted to operate in various altitudes.
  • the combustion air is suitably supplied by means of a compressor for the purpose of obviating the loss of efliciency, due to the decreasing density of the air at increasing height of'ascension.
  • Such an artificial .air supply can also be employed for thepurpose of conferring temporarily tothe motor an efiiciency, which exceeds the normal efliciency (without employing a compressor) at the operation under normal pressure. If in this manner an render this procedure possible, it is, of.
  • the device forming the subject matter of increase of the efficiency of the motor is obof the supplied fuel, so that the latter can the present invention now makes it possible to dispense with such a high pressure in the fuel tank.
  • the fuel is fed into the carbureter at normal operation, that is to say, when the motor operates Without the compressor, by means of the usual feed pressure prevailing in the fuel tank, when, however, the compressor is employed for sup plying the combustion air, the fuel, after leaving the fuel tank, is put under a corresponding higher pressure, so that said fuel can overcome in the suction pipe the pressure of the air current streaming in by the compressor, Without however, exposing the fuel tank to the increased fuel pressure. This is done by a pump interposed in the fuel pipe between the fuel tank and a carburetter.
  • Figs. 1 and 2 are diagrammatical representations of the combination and ar-v rangement of parts forming the invention, the form illustrated in Fig. 1 showing the employment of a piston pump and that shown in Fig. 2 illustrating the use of a rotary geared pump.
  • a is the fuel tank, in which the fuel is put under pressure by any suitable'manually or mechanically operated means.
  • the fuel passes from the tank d through the pipe 7 to 1 a pump, which may be either a piston pump y pipe of the compressor I construction,
  • a rotary pump 9' as shown in Fig. 2; from the pum the fuel passes throu h the pipe 11 into the cat space of the car ureter and through the nozzle thereof into the mixing space ofsaid carbureter.
  • the carbureter or specifically the mixing space thereof is connected with the pressure 6, as well as with the suction pipe of the mot-or a.
  • the pipe 0 is provided with a cutout m of any suitable and the geared rotary pump g is driven independently of the engine by any suitable driving means 01, and has a certain play between the teeth. of its rotary members, and a certain play is left between said rotary members and the outer portions of the circumferential wall of the pump casing.
  • a fuel feedingdevice for combustion engines comprising in combination, a carbureter arranged to normally operate in combination with a supply of air at a predetermined normal pressure, a fuel tank, a pipe connection between said tank and carbureter whereby fuel is supplied to the latter for admixture with the air at said predetermined normal ressure, means communicating with said car ureter whereby the pressure of the aforesaid air supply is increased beyond said predetermined normal pressure, means rovided in said pipe connection for incresmg the pressure of the fuel supplied to the carbureter, in a manner to overcome the resistance interposed by the increased air pressure to ,the entry'of said fuel into said carbureter, and a conduit leading from the carbureter to the engine whereby a mixture pressure,
  • a fuel feeding device for combustion engines comprising in combination, a carbureter arranged to normally operate in combination with a supply of air at a predetermined normal pressure, a fuel tank, a pipe connection between said tank and carbureter whereby fuel is supplied to the latter for admixture with the air at said predetermined normal pressure, means whereby the pressure ofthc aforesaid air supply is increased beyond said predetermined normal a geared rotary pump in said pipe connection for increasing the pressure of the fuel supplied to the carbureter, in a manner to overcome the resistance interposed by the increased air pressure to the entry of said fuel into the carbureter, said pump having a play between the teeth of its rotary pumping members sufficient to permit the normal flow of fuel to the carbureter and to prevent surpassing of a predetermined increased pressure in said fuel pipe, and a conduit leading from the carbureter to the engine whereby a mixture-of air and fuel either at normal pressure or at an increased pressure is delivered to the engine.
  • a fuel feeding device for combustion engines comprising tank, a carbureter, a pipe connection between said fuel tank and carbureter for delivering fuel to the latter, means operated at will for supplying combustion air to the carbureter under increased pressure, and a pump in said pipe connection operated independently of the engine to increase the pressure of the fuel after it leaves the fuel tank, in accordance with the increased air pressure whereby resistance said fuel into the carbureter when increased air pressure exists therein is overcome, said in combination a fuel to the entry of ump when at rest permitting the, passage

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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)
US402069A 1917-09-17 1920-08-07 Fuel-feeding device for combustion engines Expired - Lifetime US1617501A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE88266X 1917-09-17

Publications (1)

Publication Number Publication Date
US1617501A true US1617501A (en) 1927-02-15

Family

ID=5642155

Family Applications (1)

Application Number Title Priority Date Filing Date
US402069A Expired - Lifetime US1617501A (en) 1917-09-17 1920-08-07 Fuel-feeding device for combustion engines

Country Status (4)

Country Link
US (1) US1617501A (de)
CH (1) CH88266A (de)
FR (1) FR516660A (de)
GB (1) GB143897A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2804063A (en) * 1953-01-05 1957-08-27 Berliet Automobiles Engine-controlled braking system for vehicles propelled by internal combustion engines

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2804063A (en) * 1953-01-05 1957-08-27 Berliet Automobiles Engine-controlled braking system for vehicles propelled by internal combustion engines

Also Published As

Publication number Publication date
CH88266A (de) 1921-03-01
FR516660A (fr) 1921-04-23
GB143897A (en) 1921-03-31

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