US2215469A - Fuel delivery pump system for injection internal combustion engines - Google Patents
Fuel delivery pump system for injection internal combustion engines Download PDFInfo
- 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
- Authority
- 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
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Classifications
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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
- 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.
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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
ySept 24, 19ML- J, F. JANSSEN v 2215,46?
FUEL.DELIVERY PUMP SYSTEM FOR INJECTION INTERNAL COMBUSTION ENGINEE Filed July 9, 1958 Patented Sept. 24, 1940 PATENT OFFICE FUEL DELIVERY PUMIP SYSTEM FOR INJEC- TION INTERNAL COMBUSTION ENGINES Johann Friedrich Janssen, Stuttgart, Germany,
assigner to Robert Bosch Gesellschaft mit beschrnkter Haftung, Stuttgart, Germany Application July 9, 193s, serial No.' 218,428 In Germany July 27, 1937 3 Claims.
livers fuel into the inlet chamber during operation.
The air contained in the pipes leading to the inlet chamber in the casing. of the injectionA pump and in the inlet chamber itself before the engine is started up is generally forced out by fuel before starting by actuation of the hand. pump. This air was hitherto conveyedaway to,- ward the supply container or on to the inlet sideof the delivery pump through a return pipe branching oif from the inlet chamber of the injection pump. The return pipe necessary for v this purpose is undesirable in many cases. However, according to the invention this return pipe can be completely discarded if there is provided, at about the highest point of the inlet chamber of the injection pump, a. narrow outlet leading to outside the delivery system, which outlet is open for at least such a time as air is forced out on hand pumping -by the fuel thus delivered, but closes automatically as a result of the pressure increase, which is produced, chiefly in operation by the delivery of the delivery pump, in the fuel-filled inlet chamber, after the air has been forced out of the inlet chamber.
The invention is more particularly described with reference to the accompanying drawing, in which:
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. 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.
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.
At that end of the inlet chamber which is opposite to4 the'point of entry of the pipe 9 into the inlet chamber Ia of the injection pump there is provided in the casing of the injection pump an opening I8 which starts from the highest point of the inlet chamber. To this opening there is connected through a Valve I9 one end of a pipe 20, the other end of which opens into the pipe I I, which is connected with the induction pipe of the engine. As Figure 2 shows, the casing 2| of the valve I9 is provided with a blind bore and is secured to the casing of the injection pump, the outlet opening I8 of the inlet chamber 'opening into the blind bore. A mov' able piston valve 22 'is tightly fitted in the blind bore of the valve casing. Between the piston valve and the base of the valve casing is accommodated 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. In the upper wall of the valve casing is provided 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.
When the engine is at a standstill, fuel can be withdrawn from the supply containers and delivered to the delivery pump 6a by means of the hand pump I3. As soon as a certain pressure is reached in front of the delivery pump, the check or non-return valve I5 opens on further actuation of the hand pump so that, bypassing the delivery pump, fuel is delivered through the pipe l to the pressure side of the delivery pump 6a, and into the air separator 8. 'Ihe air separator allows the air expelled from the pipes 4a, I4, 'I and also a part of the air forcedv out of .it by the fuel to escape until the valve cone, which is raised `beyond a certain level on the rising of the fuel level, covers the point at which the pipe Il opens into the air separator.
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. On further actuation of the hand pump, 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. Finally, on hand pumping, a pressure is reached at which the piston valve 22 occupies the position shown in Figure 2, in which the valve has completely opened the hole 25 and the connection between the inlet chamber and the pipe 20 and all the air can escape from the inlet chamber. When all the air has been expelled and fuel has been pressed into the narrow bore 24 by further actuation of the hand pump, the counterpressure opposed to the hand pump increases in a manner which can be felt, which is a sign that the inlet chamber is completely lled with fuel.
On the operation of the engine, 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.
I declare that what I claim is:
1. 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.
2. 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.
3. 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.
J OHANN FRIEDRICH JANSSEN.
vthe piston and which connects the inlet cham-
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEB179341D DE685396C (en) | 1937-07-28 | 1937-07-28 | Fuel delivery system for fuel injection engines |
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 (en) |
CH (1) | CH210263A (en) |
DE (1) | DE685396C (en) |
FR (1) | FR841189A (en) |
GB (1) | GB497473A (en) |
Cited By (8)
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL94822C (en) * | 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 (en) * | 2011-07-22 | 2013-01-24 | Robert Bosch Gmbh | Pump device for common rail injection system for internal combustion engine of vehicle, has vent valve which is constructed such that it is opened, when pressure in high pressure region is less than predefined pressure |
-
1937
- 1937-07-28 DE DEB179341D patent/DE685396C/en not_active Expired
-
1938
- 1938-07-09 US US218428A patent/US2215469A/en not_active Expired - Lifetime
- 1938-07-15 GB GB20997/38A patent/GB497473A/en not_active Expired
- 1938-07-22 CH CH210263D patent/CH210263A/en unknown
- 1938-07-26 FR FR841189D patent/FR841189A/en not_active Expired
Cited By (10)
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 |
---|---|
DE685396C (en) | 1939-12-16 |
GB497473A (en) | 1938-12-20 |
CH210263A (en) | 1940-06-30 |
FR841189A (en) | 1939-05-12 |
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