US3760784A - Emergency stop device for an engine supplied by the injection of liquid fuel - Google Patents

Emergency stop device for an engine supplied by the injection of liquid fuel Download PDF

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Publication number
US3760784A
US3760784A US00224093A US3760784DA US3760784A US 3760784 A US3760784 A US 3760784A US 00224093 A US00224093 A US 00224093A US 3760784D A US3760784D A US 3760784DA US 3760784 A US3760784 A US 3760784A
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US
United States
Prior art keywords
gas
stop device
valve
bottle
fuel
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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US00224093A
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English (en)
Inventor
J Geantet
C Grondel
Y Giraudeau
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.)
SOC SURGERIENNE DE CONSTR MECHAN FR
SURGERIENNE DE CONSTR MECHAN S
Original Assignee
SURGERIENNE DE CONSTR MECHAN S
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.)
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Publication date
Application filed by SURGERIENNE DE CONSTR MECHAN S filed Critical SURGERIENNE DE CONSTR MECHAN S
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Publication of US3760784A publication Critical patent/US3760784A/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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/02—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
    • F02M63/0205—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively for cutting-out pumps or injectors in case of abnormal operation of the engine or the injection apparatus, e.g. over-speed, break-down of fuel pumps or injectors ; for cutting-out pumps for stopping the engine
    • F02M63/0215—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively for cutting-out pumps or injectors in case of abnormal operation of the engine or the injection apparatus, e.g. over-speed, break-down of fuel pumps or injectors ; for cutting-out pumps for stopping the engine by draining or closing fuel conduits
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S123/00—Internal-combustion engines
    • Y10S123/11—Antidieseling

Definitions

  • a supply pump sends fuel through a fuel filter to the supply chamber.
  • a bottle of gas has its mouth sealed by a diaphragm which is pressurized by a percussion mechanism in the case of an accident. The gas is thereby released, flows rapidly through a check-valve into the pipe leading to the supply chamber of the injection pump, sweeps the fuel from this chamber through this scavenging valve and stops the engine.
  • the invention relates to an emergency stop device for internal combustion engines whose supply system comprises a reservoir of liquid fuel a primary pump having a suction pipe connected to the fuel reservoir and a delivery pipe; an injection pump having a supply chamber where this delivery pipe ends and which is connected to the reservoir by means of a spring-biased valve (called a scavenging valve) adapted to be opened when the pressure in this chamber exceeds a predetermined threshold; and at least one injector receiving the fuel from the injection pump to introduce it into the engine.
  • a scavenging valve adapted to be opened when the pressure in this chamber exceeds a predetermined threshold
  • the invention relates more particularly, but not exclusively, among these stop devices, to those for electrogenerating systems (stationary or traction systems for locomotives), marine installations (propulsion or electrogenerating units on board ship), industrial units (for drilling rigs, for pumping stations), all types of units for which any risk of excessive speed or running away exists.
  • the overflow system must have a considerable volume to be able to remove the liquid fuel from the supply chamber in case of sudden stopping and a portion of this fuel risks being jetted to the outside through the aerating device which normally includes such a system at its upper part;
  • the gas under pressure can expel the fuel from the whole of its supply circuit, in particular from the primary pump, which renders the restoration into starting condition of the engine more difficult.
  • the stop device is characterized by the fact that it comprises a hollow body which is arranged to receive the neck of a bottle of gas under pressure, normally obturated by a fluid-tight diaphragm, which body is connected, through a first check-valve, to a point of the abovesaid delivery pipe situated downstream of a second check valve and possessing a sudden action mechanism adapted to pierce the abovesaid diaphragm in case of accident which creates, in the portion of the abovesaid delivery pipe situated downstream of the abovesaid point and in the supply chamber of the injection pump, a rapid and momentary current of gas which expels the fuel therefrom towards the reservoir through the scavenging valve and thus causes the stopping of the engine.
  • the first check-valve prevents the fuel from arriving at the hollow bottle-carrying body.
  • it allows to pass the gas coming from the hollow body that the second check-valve obliges to flow towards the supply chamber of the injection pump.
  • the abovesaid mechanism is a percussion mechanism comprising a weight movable between an armed position where it is loaded by a spring and retained by a bolt and a released position which it can reach after liberation by its bolt and whereby it causes the piercing of the diaphragm.
  • FIG. 1 shows diagrammatically, in elevation with portions in section the essential elements of a supply system for an internal combustion engine and one embodiment of an emergency stop device constructed according to the invention
  • FIG. 2 shows, in a more detailed manner and in vertical section, an embodiment of the emergency stop device of FIG. 1, and
  • FIG. 3 lastly, shows with portions in elevation and portions in vertical section a modification of the embodiment of the device constructed as in FIG. 2.
  • a primary pump (or supply pump) 3 having a suction pipe 4 connected to the reservoir 2 and a delivery pipe 5 on which there is generally mounted a fuel filter 6;
  • an injection pump 7 having a supply chamber 8 wherein the delivery pipe 5 ends and which is connected to the reservoir 2 by a channel 9 through a scavenging valve 10;
  • the stop device 13 of the engine 1 comprises essentially, according to the invention, a hollow body 14 arranged to receive the neck 15 of a bottle of gas under pressure 16, normally closed by a sealing diaphragm 17, which body is connected, through a channel 18 provided with a first check-valve 19, to a point 20 of the delivery pipe 5 situated downstream of the second check-valve 21 and possesses a sudden action mechanism 22 adapted to pierce the diaphragm 17 in case of an accident requiring the stopping of the engine.
  • the neck 15 possesses a threaded portion, it suffices to provide the hollow body 14 with a collar 14a threaded internally to receive the neck.
  • the mechanism 22 is advantageously a percussion mechanism comprising a weight 23 movable between an armed position (position illustrated in FIG. 1 and shown in full lines in FIG. 2), wherein it is loaded by a spring 24 and held by a bolt 25, and a released position (shown in mixed lines in FIG. 2) that it can reach after liberation by its bolt 25 and under the action of the spring 24 and wherein it causes the piercing of the diaphragm 17.
  • the device 13 comprises the non-return valve 21 as sole element capable of opposing the flow of gas, which enables it to cooperate with a bottle 16 having a volume corresponding to a single stopping operation.
  • a gas inert with respect to the liquid fuel and inoffensive when it is released into the atmosphere and, more particularly for reasons of economy, carbonic acid gas or nitrogen.
  • carbonic acid gas there may be used a bottle containing a charge of 150 grams under a pressure of 60 bars, the device 13 being arranged to ensure the expansion of the gas down to a pressure of about bars. As shown in FIGS.
  • a same support 26 forming part of the device 13 not only the hollow body 14 for the bottle 16 in the position of use, but also a tubular element 27 including a collar analogous to the collar 14a of the said body 14 to receive a reserve bottle 16a.
  • the support 26 may be arranged in the form of a box shielding the essential elements of the device 13 and provided with openings 28 for the passage of bottles 16, 16a.
  • the hollow body 14 comprises a cylindrical bore 29 in which is guided the mass 23, also cylindrical, and housed, a bush 13 serving as a guide for a pin 31.
  • the bush 30 is traversed by holes 32 enabling gas which arrives from the bottle 16 to reach the channel 18 and it is arranged to prevent this gas from arriving at the bore 29.
  • On the hollow body 14 is adapted a nozzle 33 ensuring the expansion of the scavenging gas.
  • the hollow body comprises in addition a bore 34 which penetrates at a right-angle into the bore 29 and in which the bolt 25 is guided.
  • the mass 23 of the mechanism 22 can be armed, it is provided with a handle 35 to which it is connected by a rod 36 and which emerges from the box-shaped support 26 so that the position of this handle indicates in a clearly visible manner whether the stop device has or has not already functioned.
  • an electromagnetic control constituted by a magnetic coil 37 and a plunger 38 such that, when the coil is energized by means of conductors 39, it effects the withdrawal of the bolt 25, for example by thrusting on a lever 40 of the bell crank type and against the action of a spring 41.
  • FIG. 3 only differs from the embodiment of FIG. 2 by the substitution of a hydraulic (or pneumatic) control for the electromagnetic control 37, 38, 39.
  • the plunger 38 is replaced by a piston 38a which is adapted to slide in a cylinder 42 which can be supplied with fluid under pressure by means of a pipe 43.
  • the conductors 39 (FIG. 2) or the pipe 43 (FIG. 3) are connected to a detector system (not shown) adapted to send a current in the conductors 39 or a fluid under pressure into the pipe 43 as soon as it detects an accident requiring the stopping of the engine and such as the running away of the engine.
  • the bottle 16 is always full if there is no emergency stopping;
  • the position of the handle 35 enables it to be easily determined whether the device has operated or not;
  • the bottles 16 which are full of gas can be easily distinguished by their weight from those which are empty, the weight when empty being generally marked on the bottles;
  • Emergency stop device for internal combustion engines whose supply system includes a reservoir of liquid fuel, a primary pump having a suction pipe connected to the fuel reservoir and a delivery pipe, an injection pump having a supply chamber in which said delivery pipe terminates and which is connected to the reservoir through a calibrated valve (called a scavenging valve) adapted to be opened when the pressure in said chamber exceeds a predetermined threshold, and at least one injector receiving fuel from the injection pump to introduce it into the engine, said device comprising a hollow body which is arranged to receive the neck of a bottle of pressurized gas, normally closed by a fluid-tight diaphragm, which body has a connecting passage to a point of said delivery pipe, a first checkvalve in said passage, a second check-valve situated upstream of said point and a sudden action mechanism positioned so as to pierce said diaphragm in case of accident, whereby in the portion of said delivery pipe situated downstream of said point and in the supply chamber of the injection pump, there is released a rapid and moment
  • Stop device is a percussion mechanism comprising a weight movable between an armed position wherein it is loaded by a spring and retained by a bolt and a released position that it can reach after liberation of said bolt resulting in the piercing of the diaphragm.
  • Stop device comprises the first check-valve as sole element capable of opposing the flow of said gas, which enables it to cooperate with a bottle having a volume corresponding to a single stop operation.
  • Stop device according to claim 1, wherein said gas is carbonic acid gas.
  • Stop device comprising a support on which are mounted, not only the hollow body adapted to receive the bottle in use position, but also a tubular element adapted to receive, in analogous manner, a reserve bottle.
  • Stop device according to claim 5, wherein the support is arranged in the form of a box shielding the essential elements of the device and provided with openings for the passage of gas bottles.
  • the hollow body comprises, a first cylindrical bore in which the percussion weight is guided and housed, a bush serving as a guide for a pin, which bush is traversed by holes enabling the gas, which comes from the bottle mounted in said body, to reach said point of the delivery pipe and arranged to prevent this gas from arriving at said bore and a second bore which penetrates at a right angle into the first bore and in which said bolt is guided, a nozzle being adapted on the hollow body to ensure the expansion of the scavenging gas.
  • Stop device wherein the weight of the percussion mechanism is connected to an arming handle projecting outside of the box-shaped support.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Fuel-Injection Apparatus (AREA)
US00224093A 1971-02-11 1972-02-07 Emergency stop device for an engine supplied by the injection of liquid fuel Expired - Lifetime US3760784A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7104602A FR2126572A5 (enrdf_load_stackoverflow) 1971-02-11 1971-02-11

Publications (1)

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US3760784A true US3760784A (en) 1973-09-25

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US00224093A Expired - Lifetime US3760784A (en) 1971-02-11 1972-02-07 Emergency stop device for an engine supplied by the injection of liquid fuel

Country Status (7)

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US (1) US3760784A (enrdf_load_stackoverflow)
BE (1) BE779288A (enrdf_load_stackoverflow)
DE (1) DE2204928A1 (enrdf_load_stackoverflow)
ES (1) ES399668A1 (enrdf_load_stackoverflow)
FR (1) FR2126572A5 (enrdf_load_stackoverflow)
GB (1) GB1379978A (enrdf_load_stackoverflow)
IT (1) IT949344B (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4361121A (en) * 1980-04-17 1982-11-30 Robert Bosch Gmbh Control device for shutting off a diesel engine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57500298A (enrdf_load_stackoverflow) * 1980-03-13 1982-02-18

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2095349A (en) * 1934-10-25 1937-10-12 Nordberg Manufacturing Co Safety device for engines
US2551241A (en) * 1949-12-09 1951-05-01 Gen Electric Purging arrangement for gas turbine fuel systems
US2737249A (en) * 1954-05-14 1956-03-06 Pinkel Isadore Irving Crash-fire ignition source inerting system
GB888949A (en) * 1960-07-21 1962-02-07 Hunslet Taylor Cons Proprietar Improvements in the protection and control of internal combustion engines powering haulage vehicles
US3371634A (en) * 1966-10-19 1968-03-05 Lalande John Clark Apparatus for combustion control in diesel engines
US3377018A (en) * 1966-04-29 1968-04-09 Compressors Automation Control System and apparatus for affording fire protection to compressors pumping combustible fluids
GB1224900A (en) * 1967-12-12 1971-03-10 Daimler Benz Aktiengesellchaft Method of preparing an internal combustion engine for starting

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2095349A (en) * 1934-10-25 1937-10-12 Nordberg Manufacturing Co Safety device for engines
US2551241A (en) * 1949-12-09 1951-05-01 Gen Electric Purging arrangement for gas turbine fuel systems
US2737249A (en) * 1954-05-14 1956-03-06 Pinkel Isadore Irving Crash-fire ignition source inerting system
GB888949A (en) * 1960-07-21 1962-02-07 Hunslet Taylor Cons Proprietar Improvements in the protection and control of internal combustion engines powering haulage vehicles
US3377018A (en) * 1966-04-29 1968-04-09 Compressors Automation Control System and apparatus for affording fire protection to compressors pumping combustible fluids
US3371634A (en) * 1966-10-19 1968-03-05 Lalande John Clark Apparatus for combustion control in diesel engines
GB1224900A (en) * 1967-12-12 1971-03-10 Daimler Benz Aktiengesellchaft Method of preparing an internal combustion engine for starting

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4361121A (en) * 1980-04-17 1982-11-30 Robert Bosch Gmbh Control device for shutting off a diesel engine

Also Published As

Publication number Publication date
IT949344B (it) 1973-06-11
DE2204928A1 (de) 1972-09-07
ES399668A1 (es) 1974-11-16
GB1379978A (en) 1975-01-08
FR2126572A5 (enrdf_load_stackoverflow) 1972-10-06
BE779288A (fr) 1972-08-11

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