US3783842A - Leak-fuel collecting and detecting device for an internal combustion engine - Google Patents

Leak-fuel collecting and detecting device for an internal combustion engine Download PDF

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Publication number
US3783842A
US3783842A US00234513A US3783842DA US3783842A US 3783842 A US3783842 A US 3783842A US 00234513 A US00234513 A US 00234513A US 3783842D A US3783842D A US 3783842DA US 3783842 A US3783842 A US 3783842A
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US
United States
Prior art keywords
fuel
hood
leak
collecting vessel
leakage
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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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US00234513A
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English (en)
Inventor
K Kuhn
M Corbin
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SOC D ETUDES MACHINES THERMIQUES FR
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Semt
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Publication of US3783842A publication Critical patent/US3783842A/en
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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
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/002—Arrangement of leakage or drain conduits in or from injectors
    • 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
    • F02M55/02—Conduits between injection pumps and injectors, e.g. conduits between pump and common-rail or conduits between common-rail and injectors
    • 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
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition

Definitions

  • the device comprises a hood tightly covering the head of theinjection pump and through which pass said delivery pipe and the sheath surround ing it, and leak-fuel discharge means for discharging the leak-fuel accumulated in the internal volume of said hood.
  • said discharge means comprise a collecting vessel provided with a warning device.
  • the discharge pipe connecting the injection pump with the injector is usually surrounded by a sheath with an annular spacing between the latter and the said pipe.
  • One end of the said sheath is sealingly connected with the injector into which it is introduced, whereas the other end of the sheath opens freely into the ambient air or is connected with a branch pipe leading to a leak-fuel collecting vessel, thus enabling the leak-fuel resulting from the high pressure in the said pipe (from 250 to 800 kg/cm 2) and from defects in the fluid tightness of the couplings and/or joints to be conveyed out of the most dangerous region.
  • the device according to the invention enables the said drawbacks to be avoided.
  • the device is of the type comprising a sheath surrounding the fuel delivery pipe and sealingly connected with the injector, and is characterized in that it com-- prises a sealed hoodcovering the pump head, into the internal volume of which opens the said sheath, and means of discharge of the leak-fuel accumulated in the said internal volume.
  • a collecting vessel is connected with the internal volume of the said hood and provided with a warning device adapted, in particulan'to rapidly warn of an important fuel leakage.
  • the said collecting vessel is provided with a large overflowopening enabling the leak-fuel to flow out in case of important leakage, the said opening being operated only after an important amount of fuel has entered and been maintained in the said vessel.
  • the said collecting vessel is advantageously provided at its bottom with a small opening enabling the fuel resulting from the said leakage of small importance to flow out.
  • a plurality of said hoods provided on the various injection pumps may be connected through a suitable network of pipes to one and the same collecting vessel, the mode of grouping depending in particular upon the number of cylinders equal to the number of injection pumps and upon the relative arrangement of the said cylinders.
  • FIG. 1 is a general diagrammatic view of a collecting and detecting device designed according to one form of embodiment of the invention and used in connection with the cylinders of a Diesel engine, the said view being a view in profile at the level of the engine block;
  • FIG. 2 is an axial sectional view of the upper portion of one of the injection pumps of the said engine;
  • FIG. 3 is a top view of the upper portion of the injection pump of FIG. 2;
  • FIG. 4 is a vertical sectional view, upon the line IV-IV of FIG. 1, of the collecting vessel.
  • a leak-fuel collecting and detecting device comprises a fuel collecting vessel 1 connected, through a pipe network 2 comprising a collector 2a and elementary pipes 2b, 2c, with the upper 'portion of injection pumps 3a, 3b associated respectively with engine cylinders 4a and 4b.
  • a hood 6 comprising a cone-shaped cap 6a and a tubular extension 6b, the
  • said cone-shaped cap being provided at its top with a seal 7, through an axial opening 8 of which passes a sheath 9 surrounding a pipe 10 through which the fuel is delivered by the injection pump into the corresponding injector (not shown).
  • an orifice 11 In the lower portion of the hood 6 is provided an orifice 11 with which is connected the pipe 2b (see also FIG. 1) conveying the leak-fuel to the collector 2a and the collecting vessel 1.
  • a tightening collar 12 provided with a tightening screw 12a enabling the hood 6 to be firmly and sealingly retained on the upper portion 4 of the injection pump 3a, and the fixing lug l3 and the clamp 14 holding the assembly formed of the delivery pipe 10 and its sheath 9.
  • FIG. 4 shows the internal structure of the collecting vessel 1 into which the leak-fuel is conveyed by the collector 2a. It is seen that the body of the latter is essentially formed of a casing 1a on which is adapted a removable cover lb retained by screws such as 15 and provided with an inspection orifice 16a closed by a threaded plug 16b.
  • a bracket 18 carrying, on the one hand, a flexible blade 19, the free end 19a of which forms an electric contact, and, on the other hand, an arm 20 mounted pivotably at one end about a horizontal axis on the said bracket and terminating at its opposite end with a float 21, the external surface of which also forms an electric contact adapted to close a circuit when applied against the electric contact 19a, the electric circuit thus closed being adapted to operate a warning device, such as for instance a siren, connected electrically with the terminals 22.
  • a warning device such as for instance a siren
  • a pipe coupling 23 having a small opening for continuous outflow of the fuel resulting from leakage of small importance.
  • the collecting vessel 1 is also provided with a pipe coupling 24 (FIG. 1) defining a large overflow-opening for the fuel resulting from important leakage.
  • the device shown in FIG. 1 also comprises fuelleakage sighting devices, such as that shown at 25 on 5 the pipe 2b.
  • the device 25 comprises a cylindrical body extending along a substantially vertical axis 25a, a window 25b of transparent material and the end of the upper section of pipe 2b which is so bevelled as to form a whistle 25c.
  • the internal volume of the body 25a, into which opens the whistle 250, communicates at its top with the lower section of the pipe 2b. It is readily understood that such a device enables direct observation of leakage even if the latter is of small importance, since in this case the shape of the whistle enables the fuel proceeding from the hood 6 to be concentrated in the form of large drops dripping always at the same place from the pipe 2b.
  • FIGS. 1 to 4 operates as follows.
  • the leak-fuel flows continuously through the pipe coupling 23 and the warning device is not operated, the said leak-fuel being eliminated progressively without involving any danger. If for any reason whatsoever the leakage becomes more important, the level of the fuel in the collecting vessel 1 rises progressively. When it reaches a predetermined height corresponding substantially to the level of the said overflow opening, the float 21 actuates the electric contact 19a which itself actuates the warning device in order that the engine may be stopped immediately or any danger resulting from the important fuel leakage may be averted by any other suitable means; the excess fuel may freely escape through the overflow opening 24 as long as the appropriate operation is not performed to avoid the said important leakage.
  • the location of fuel leakage may be determined by means of the sighting devices which, as in the case of the sighting device 25 shown in FIG. 1, indicate in particular whether the leak-fuel originates from the injection devices of the engine.
  • the invention is by no means limited to the form of embodiment described and illustrated, which has been given by way of example only. in particular, it comprises all the means constituting technical equivalents to the means described as well as their combinm tions, should the latter be carried out according to the spirit of the invention.
  • Device for collecting and detecting fuel leakage in a fuel delivery pipe surrounded by a sheath and connecting an injection pump with the injector of the corresponding cylinder of an internal combustion engine comprising a sealed hood covering the head of the injection pump and through which pass said delivery pipe and said sheath, the latter terminating in the internal volume of said hood, leak-fuel and discharge means for discharging the leak-fuel accumulated in said internal volume, said leak-fuel discharge means comprising a collecting vessel connected with the internal volume of said hood and provided with a warning device.
  • Device characterized in that said collecting vessel is provided with a level detector comprising a float mounted on a pivotable arm and adapted to actuate said warning device.
  • Device characterized in that said collecting vessel is provided with a large-sized opening for the overflow of fuel resulting from important leakage.
  • Device characterized in that said collecting vessel is provided at its bottom with a small-sized opening for the outflow of fuel resulting from leakage of small importance.
  • said leak-fuel discharge means comprise a discharge pipe opening into the upper portion of said collecting vessel and connected with the lower portion of the internal volume of said hood, said collecting vessel being located below the level of the injection pump.
  • Device characterized in that it comprises fuel-leakage sighting means interposed between said hood and said collecting vessel.
  • said sighting means comprises a tubular member ending in a substantially vertical whistle and opening freely into an enclosure provided with a sighting window.
  • hood is in the form of a cone-shaped cap ending with a tubular portion fitted through the medium of an interposed seal on the head of the injection pump, the said portion being provided with an abutment shoulder by which it abuts against said head, whereas the connection between said delivery pipe and said head takes place through the medium of a coupling located within said hood.

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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)
  • Testing Of Engines (AREA)
  • Examining Or Testing Airtightness (AREA)
US00234513A 1971-04-15 1972-03-14 Leak-fuel collecting and detecting device for an internal combustion engine Expired - Lifetime US3783842A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7113340A FR2133287A5 (no) 1971-04-15 1971-04-15

Publications (1)

Publication Number Publication Date
US3783842A true US3783842A (en) 1974-01-08

Family

ID=9075331

Family Applications (1)

Application Number Title Priority Date Filing Date
US00234513A Expired - Lifetime US3783842A (en) 1971-04-15 1972-03-14 Leak-fuel collecting and detecting device for an internal combustion engine

Country Status (14)

Country Link
US (1) US3783842A (no)
JP (1) JPS526408B1 (no)
BR (1) BR7202086D0 (no)
CH (1) CH552751A (no)
DE (1) DE2217591C3 (no)
DK (1) DK136548B (no)
ES (1) ES401109A1 (no)
FI (1) FI53240C (no)
FR (1) FR2133287A5 (no)
IT (1) IT950158B (no)
NL (1) NL160633C (no)
NO (1) NO137791C (no)
SE (1) SE379576B (no)
SU (1) SU579937A3 (no)

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3929109A (en) * 1972-01-22 1975-12-30 Noel Christopher Chamberlain Leak-off pipe for fuel injection equipment
US4334512A (en) * 1978-10-12 1982-06-15 Klockner-Humboldt-Deutz Ag Connecting conduit arrangement
US4384557A (en) * 1981-03-18 1983-05-24 Caterpillar Tractor Co. Apparatus for draining liquid from an engine
US4693223A (en) * 1984-06-21 1987-09-15 General Motors Corporation Fuel injection valve connection
US4832376A (en) * 1987-05-23 1989-05-23 Usui Kokusai Sangyo Kaisha Ltd. Connection structure for branch pipe in high-pressure fuel manifold
US4893601A (en) * 1987-05-23 1990-01-16 Usui Kokusai Sangyo Kaisha Ltd. Manifold for conveying a high-pressure fuel
US4909221A (en) * 1987-11-19 1990-03-20 General Motors Corporation Internal combustion engine fuel injection system
US5033435A (en) * 1989-05-10 1991-07-23 Navistar International Transportation Corp. Fluid conduit system incorporating self-aligning fitting
US5713323A (en) * 1996-10-04 1998-02-03 Ford Motor Company Integrated air/fuel induction system for an internal combustion engine
US5775303A (en) * 1995-06-30 1998-07-07 Cummins Engine Company, Inc. High Pressure Fuel Line Connection
US5927254A (en) * 1996-01-25 1999-07-27 Denso Corporation Intake duct and intake system for internal combustion engine
US6079391A (en) * 1995-09-14 2000-06-27 Robert Bosch Gmbh Fuel injection system for internal combustion engines
US6276336B1 (en) * 1997-10-29 2001-08-21 Siemens Aktiengesellschaft Pressure reservoir for fuel supply systems
EP1150006A2 (en) * 2000-04-27 2001-10-31 Wärtsilä Technology Oy AB Arrangement for locating fuel leakage in connection with a combustion engine
US6314946B1 (en) * 1997-01-16 2001-11-13 Isuzu Motors Limited Fuel injection system for diesel engines
US6408826B2 (en) * 1997-03-03 2002-06-25 Usui Kokusai Sangyo Kaisha Limited Common rail and method of manufacturing the same
US20060118088A1 (en) * 2004-12-03 2006-06-08 Man Nutzfahrzeuge Ag Supercharged diesel engine with a common-rail injection system
EP2011996A1 (en) * 2007-07-04 2009-01-07 Caterpillar Motoren GmbH & Co. KG Fuel system for a combustion engine having local leakage detection
US20090071430A1 (en) * 2007-07-13 2009-03-19 Mark Iv Systemes Moteurs (Sas) Double-plenum inlet manifold and vehicle incorporating such a manifold
CN102748180A (zh) * 2012-07-04 2012-10-24 力帆实业(集团)股份有限公司 汽车发动机燃气喷嘴安装支架
ITBZ20120012A1 (it) * 2012-04-10 2013-10-11 So Co Mar S R L Involucro di protezione antispruzzo per pompe di combustibile.
US20160222935A1 (en) * 2013-10-01 2016-08-04 Robert Bosch Gmbh Holder for fastening a component to an internal combustion engine

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI120886B (fi) * 2008-06-05 2010-04-15 Waertsilae Finland Oy Polttoaineen ruiskutusjärjestelmä mäntämoottorille
FI120843B (fi) * 2008-06-05 2010-03-31 Waertsilae Finland Oy Korkeapainepolttoaineen liitäntäjärjestely ruiskutussuuttimeen yhteispainevarastoon perustuvassa järjestelmässä

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2063374A (en) * 1934-09-25 1936-12-08 Harvey F Hansen Internal combustion engine
US3194221A (en) * 1962-04-25 1965-07-13 Daimler Benz Ag Cylinder head construction

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE462273C (de) * 1928-07-07 Deckel Friedrich Brennstoffdruckleitung fuer Einspritzvorrichtungen von Verbrennungskraftmaschinen
FR590146A (fr) * 1924-12-10 1925-06-11 Dispositif indiquant la rupture d'une canalisation
DE1809619A1 (de) * 1968-11-19 1970-06-11 Motoren Werke Mannheim Ag Sicherheitsvorrichtung fuer Einspritzbrennkraftmaschinen

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2063374A (en) * 1934-09-25 1936-12-08 Harvey F Hansen Internal combustion engine
US3194221A (en) * 1962-04-25 1965-07-13 Daimler Benz Ag Cylinder head construction

Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3929109A (en) * 1972-01-22 1975-12-30 Noel Christopher Chamberlain Leak-off pipe for fuel injection equipment
US4334512A (en) * 1978-10-12 1982-06-15 Klockner-Humboldt-Deutz Ag Connecting conduit arrangement
US4384557A (en) * 1981-03-18 1983-05-24 Caterpillar Tractor Co. Apparatus for draining liquid from an engine
US4693223A (en) * 1984-06-21 1987-09-15 General Motors Corporation Fuel injection valve connection
US4832376A (en) * 1987-05-23 1989-05-23 Usui Kokusai Sangyo Kaisha Ltd. Connection structure for branch pipe in high-pressure fuel manifold
US4893601A (en) * 1987-05-23 1990-01-16 Usui Kokusai Sangyo Kaisha Ltd. Manifold for conveying a high-pressure fuel
US4909221A (en) * 1987-11-19 1990-03-20 General Motors Corporation Internal combustion engine fuel injection system
US5033435A (en) * 1989-05-10 1991-07-23 Navistar International Transportation Corp. Fluid conduit system incorporating self-aligning fitting
US5775303A (en) * 1995-06-30 1998-07-07 Cummins Engine Company, Inc. High Pressure Fuel Line Connection
US6079391A (en) * 1995-09-14 2000-06-27 Robert Bosch Gmbh Fuel injection system for internal combustion engines
US5927254A (en) * 1996-01-25 1999-07-27 Denso Corporation Intake duct and intake system for internal combustion engine
US5713323A (en) * 1996-10-04 1998-02-03 Ford Motor Company Integrated air/fuel induction system for an internal combustion engine
US6314946B1 (en) * 1997-01-16 2001-11-13 Isuzu Motors Limited Fuel injection system for diesel engines
US6408826B2 (en) * 1997-03-03 2002-06-25 Usui Kokusai Sangyo Kaisha Limited Common rail and method of manufacturing the same
US6276336B1 (en) * 1997-10-29 2001-08-21 Siemens Aktiengesellschaft Pressure reservoir for fuel supply systems
EP1150006A3 (en) * 2000-04-27 2002-10-09 Wärtsilä Technology Oy AB Arrangement for locating fuel leakage in connection with a combustion engine
EP1150006A2 (en) * 2000-04-27 2001-10-31 Wärtsilä Technology Oy AB Arrangement for locating fuel leakage in connection with a combustion engine
US20060118088A1 (en) * 2004-12-03 2006-06-08 Man Nutzfahrzeuge Ag Supercharged diesel engine with a common-rail injection system
US7370639B2 (en) * 2004-12-03 2008-05-13 Man Nutzfahrzeuge Ag Supercharged diesel engine with a common-rail injection system
CN101796290B (zh) * 2007-07-04 2012-07-18 卡特彼勒发动机有限及两合公司 用于内燃机的具有局部泄漏检测的燃料系统
EP2011996A1 (en) * 2007-07-04 2009-01-07 Caterpillar Motoren GmbH & Co. KG Fuel system for a combustion engine having local leakage detection
WO2009003717A1 (en) * 2007-07-04 2009-01-08 Caterpillar Motoren Gmbh & Co. Kg Fuel system for a combustion engine having local leakage detection
US20100288018A1 (en) * 2007-07-04 2010-11-18 Ulrich Hopmann Fuel system for a combustion engine having local leakage detection
CN102383990A (zh) * 2007-07-04 2012-03-21 卡特彼勒发动机有限及两合公司 用于内燃机的具有局部泄漏检测的燃料系统
US20090071430A1 (en) * 2007-07-13 2009-03-19 Mark Iv Systemes Moteurs (Sas) Double-plenum inlet manifold and vehicle incorporating such a manifold
US8434447B2 (en) * 2007-07-13 2013-05-07 Systemes Moteurs (Sas) Double-plenum inlet manifold and vehicle incorporating such a manifold
ITBZ20120012A1 (it) * 2012-04-10 2013-10-11 So Co Mar S R L Involucro di protezione antispruzzo per pompe di combustibile.
CN102748180A (zh) * 2012-07-04 2012-10-24 力帆实业(集团)股份有限公司 汽车发动机燃气喷嘴安装支架
US20160222935A1 (en) * 2013-10-01 2016-08-04 Robert Bosch Gmbh Holder for fastening a component to an internal combustion engine
US10337479B2 (en) * 2013-10-01 2019-07-02 Robert Bosch Gmbh Holder for fastening a component to an internal combustion engine

Also Published As

Publication number Publication date
CH552751A (fr) 1974-08-15
DK136548B (da) 1977-10-24
DE2217591B2 (de) 1976-03-18
SE379576B (no) 1975-10-13
ES401109A1 (es) 1975-09-01
DK136548C (no) 1978-04-17
NO137791C (no) 1978-04-26
SU579937A3 (ru) 1977-11-05
NL160633B (nl) 1979-06-15
DE2217591A1 (de) 1972-10-26
FI53240C (no) 1978-03-10
FI53240B (no) 1977-11-30
IT950158B (it) 1973-06-20
NO137791B (no) 1978-01-16
NL7204936A (no) 1972-10-17
NL160633C (nl) 1979-11-15
DE2217591C3 (de) 1984-02-16
BR7202086D0 (pt) 1973-05-10
JPS526408B1 (no) 1977-02-22
FR2133287A5 (no) 1972-11-24

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