US2215469A - Fuel delivery pump system for injection internal combustion engines - Google Patents

Fuel delivery pump system for injection internal combustion engines Download PDF

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Publication number
US2215469A
US2215469A US218428A US21842838A US2215469A US 2215469 A US2215469 A US 2215469A US 218428 A US218428 A US 218428A US 21842838 A US21842838 A US 21842838A US 2215469 A US2215469 A US 2215469A
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US
United States
Prior art keywords
fuel
pump
inlet chamber
delivery pump
pipe
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
US218428A
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English (en)
Inventor
Janssen Johann Friedrich
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Application granted granted Critical
Publication of US2215469A publication Critical patent/US2215469A/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
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/20—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines characterised by means for preventing vapour lock
    • 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
    • F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
    • 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
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • 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
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/007—Venting means
    • 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
    • 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
    • F02M2700/13—Special devices for making an explosive mixture; Fuel pumps
    • 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
    • F02M2700/13—Special devices for making an explosive mixture; Fuel pumps
    • F02M2700/1317—Fuel pumpo for internal combustion engines

Definitions

  • Figure 1 shows the layout of a fuel delivery system according to the example of construc tion.
  • Figure 2 is a longitudinal section through the outlet valve, which is connected to the inlet chamber of the casing of the injection pump.
  • An injection pump I is connected through y the pressure pipes 2 tothe injection nozzles of an internal combustion engine (not shown).
  • a fuel supply container 3 located remote from and arranged below the injection plant is connected through pipes 4a and 4b, in which cut-olf cocks 5 are disposed, to the suction side of two delivery pumps 6a and 6b.
  • the pressure side of both delivery pumps is in connection through a pipe l with an air separator 8.
  • the end of the pipe 'l connected to the air separator projects into the inner chamber of the air separator and opens below the lowest fuel level which can begreached in operation. This arrangement is desirable be- (Cl. 12S-139) cause it permits delivery of fuel to air separator 8 with little or no production of foam.
  • a second pipe 9 connects the air separator 8 with the inlet chamber Ia of the injection pump I; it projects from above into the inner chamber ⁇ of the air separator.
  • a float ⁇ II) carries, on the part projecting out of the fuel level, a pin I0a, of which the pointed free end ⁇ is constructed as a valve cone.
  • a pipe III To the upper part ofthe casing of the air separator opposite to this pointedend is lo connected a pipe III, -which opens into the air induction pipe I2 of the injection internal combustion engine.
  • a hand pump I3 In the suction pipe 4a of the delivery pump 6a is disposed a hand pump I3, the work chamber of which is connected in operation with the pipe la, so that ⁇ the fuel may pass from the supply container to the delivery pump.
  • the suction and pressure sides ofthe delivery pump 6a are connected by a pipe I4, and in this pipe is provided a check or non-return valve I5 which opens towards the pressure side of the delivery pump.
  • the suction and pressure sides of the delivery pump 6b are likewiseinterconnected by a pipe I6, a non-return valve Il opening towards the suction side of the delivery pump being provided.
  • a helical spring 23 which tends to press the piston valve on to a seat in the vvalve casing provided on the left hand end of the bore ofthe casing.
  • a longitudinal and cross. bore 24 disposed in the upper part of the piston valve opens, on one hand, at the piston face facing the inlet chamber and on the other hand at the upper superficies of the piston.
  • a bore 25 which opens into the-pipe 20, which is secured to the valve casing.
  • a set-screw 26 provided in the Wall of the valve casing projects into'a longitudinal groove in the piston valve and prevents the valve from turning.
  • a pin 21, which limits the displacement path, is provided at the right hand end of the piston valve.
  • the fuel delivered further by the hand pump finally reaches the inlet chamber of the injection pump. 'Ihe air forced upwards when the fuel level rises higher cannot flow away to the induction pipe as long as the piston valve 22 keeps the pipe 20 closed.
  • the pressure in the inlet chamber rises to such an extent that the piston valve is displaced to the right by this pressure into a position in which the mouth of the narrow bore 24 on the body of the valve 22 begins to open the hole 25, so that the air begins to flow to the induction pipe I2 through the pipe 20.
  • the delivery pumps only deliver air-freed fuel into the inlet chamber of the injection pump. Since the narrow bore 24 opposes a considerable resistance to the passage vof the fuel, 4the pressure in the inlet chamber can rise considerably above the pressure attainable with the hand pump, by which the valve is then displaced further to the right into a position in which the narrow bore is closed by the inner wall of the casing and the pin of the valve bears on the stop.
  • a fuel delivery pump system for injection internal combustion engines comprising an injection pumping apparatus consisting of a plurality of separate pumps, an inlet chamber common to all the separate pumps arranged in the casing of the injection pump, at least one hand pump for delivering fuel into said inlet chamber, when starting, at least one delivery pump delivering fuel into said chamber during operation, a narrow outlet provided at aboutthe highest point of the said chamber, opened for at least such time as air is displaced, by hand pumping, by the fuel thus delivered, and means to close said outlet automatically as a result of the pressure increase produced in the fuel lled inlet chamber, by delivery of the delivery pump after the air has been forced out of the inlet chamber.
  • a fuel delivery pump system for injection internal combustion engines comprising an injection pumping apparatus consisting of a plurality of separate pumps, an inlet chamber common to all the separate pumps arranged in the casing of the injection pump, at least one hand pump for delivering fuel into said inlet chamber, when starting, at least one delivery pump delivering fuel into said chamber during operation, a narrow outlet provided at about the highest point of the said chamber, opened for at least such time as air is displaced, by hand pumping, by the fuel thus delivered, and a control member in said outlet displaced by the pressure arising on hand pumping so that the air can escape from the inlet chamber, said control member operable to close said outlet when fuel is delivered thereto.
  • a fuel delivery pump system for injection internal combustion engines comprising an injection pumping apparatus consisting of a plurality of separate pumps, an inlet chamber common to all the separate pumps arranged in the casing of the injection pump, at least one hand pump for delivering fuel into said inlet chamber, when starting, at least one delivery pump delivering fuel into said chamber during operation, a narrow outlet provided at about the highest point of the said chamber, opened for at least such time as air is displaced, by hand pumping, by the fuel thus delivered, a passage in said outlet leading away from the inlet chamber, a piston valve in said passage, a spring loading said piston valve, and a restricted duct forming a throttle point in said piston which opens at the skirt of ber With the outlet merely as long as air has to be expelled from said chamber, butvwhich responds to an increased pressure of fuel, especially to fuel delivered during operation so that the outlet is closed by the pressure increase occurring in the said chamber when fuel isA delivered to said outlet.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
US218428A 1937-07-28 1938-07-09 Fuel delivery pump system for injection internal combustion engines Expired - Lifetime US2215469A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB179341D DE685396C (de) 1937-07-28 1937-07-28 Kraftstoff-Foerderanlage fuer Einspritzbrennkraftmaschinen

Publications (1)

Publication Number Publication Date
US2215469A true US2215469A (en) 1940-09-24

Family

ID=7008601

Family Applications (1)

Application Number Title Priority Date Filing Date
US218428A Expired - Lifetime US2215469A (en) 1937-07-28 1938-07-09 Fuel delivery pump system for injection internal combustion engines

Country Status (5)

Country Link
US (1) US2215469A (de)
CH (1) CH210263A (de)
DE (1) DE685396C (de)
FR (1) FR841189A (de)
GB (1) GB497473A (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2459807A (en) * 1944-03-16 1949-01-25 Edward M Gavin Multiple tank fuel system with emergency pump to maintain required discharge pressure
US4397333A (en) * 1981-09-04 1983-08-09 Chrysler Corporation Fuel collector assembly
US4450820A (en) * 1981-05-26 1984-05-29 Haynes Hendrick W Engine fuel conditioner and monitor
US4503885A (en) * 1983-12-16 1985-03-12 Chrysler Corporation Engine fuel supply system
US20030233994A1 (en) * 2002-06-19 2003-12-25 Volvo Lastvagnar Ab Fuel injection system for an internal combustion engine
US6675641B2 (en) * 2001-06-21 2004-01-13 Caterpillar Inc Closed system transient diesel fuel conditioning and measurement system
US20090266078A1 (en) * 2008-04-24 2009-10-29 Rolls-Royce Corporation Fuel flow anti-interruption
US20120111417A1 (en) * 2008-05-13 2012-05-10 Smith David R Offset ambient level fuel feed system

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL94822C (de) * 1954-04-26
US4809666A (en) * 1986-01-21 1989-03-07 Outboard Marine Corporation Fuel feed system
US4856483A (en) * 1988-01-04 1989-08-15 Brunswick Corporation Vacuum bleed and flow restrictor fitting for fuel injected engines with vapor separator
US4794889A (en) * 1988-04-11 1989-01-03 Brunswick Corporation Fuel puddle bleed shut-off for fuel injected two cycle engine
CA2009408C (en) * 1989-02-07 1995-09-12 Keisuke Daikoku Fuel injection type multiple cylinder engine unit
US5535724A (en) * 1995-08-23 1996-07-16 Davco Manufacturing L.L.C. Fuel pulsation dampener
DE102011079665A1 (de) * 2011-07-22 2013-01-24 Robert Bosch Gmbh Common-Rail-Einspritzsystem

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2459807A (en) * 1944-03-16 1949-01-25 Edward M Gavin Multiple tank fuel system with emergency pump to maintain required discharge pressure
US4450820A (en) * 1981-05-26 1984-05-29 Haynes Hendrick W Engine fuel conditioner and monitor
US4397333A (en) * 1981-09-04 1983-08-09 Chrysler Corporation Fuel collector assembly
US4503885A (en) * 1983-12-16 1985-03-12 Chrysler Corporation Engine fuel supply system
US6675641B2 (en) * 2001-06-21 2004-01-13 Caterpillar Inc Closed system transient diesel fuel conditioning and measurement system
US20030233994A1 (en) * 2002-06-19 2003-12-25 Volvo Lastvagnar Ab Fuel injection system for an internal combustion engine
US20090266078A1 (en) * 2008-04-24 2009-10-29 Rolls-Royce Corporation Fuel flow anti-interruption
US7784448B2 (en) * 2008-04-24 2010-08-31 Rolls-Royce Corporation Fuel flow anti-interruption
US20120111417A1 (en) * 2008-05-13 2012-05-10 Smith David R Offset ambient level fuel feed system
US8881764B2 (en) * 2008-05-13 2014-11-11 Sikorsky Aircraft Corporation Offset ambient level fuel feed system

Also Published As

Publication number Publication date
CH210263A (de) 1940-06-30
FR841189A (fr) 1939-05-12
GB497473A (en) 1938-12-20
DE685396C (de) 1939-12-16

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