US3759239A - Injection devices for compression-ignited internal combustion engines - Google Patents

Injection devices for compression-ignited internal combustion engines Download PDF

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Publication number
US3759239A
US3759239A US00142169A US3759239DA US3759239A US 3759239 A US3759239 A US 3759239A US 00142169 A US00142169 A US 00142169A US 3759239D A US3759239D A US 3759239DA US 3759239 A US3759239 A US 3759239A
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Prior art keywords
conduit
fuel
injection
chamber
passage
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US00142169A
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English (en)
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M Regneault
M Lecreurer
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Automobiles Peugeot SA
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Automobiles Peugeot SA
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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
    • F02M45/00—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship
    • F02M45/02—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts
    • F02M45/04—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts with a small initial part, e.g. initial part for partial load and initial and main part for full load
    • F02M45/06—Pumps peculiar thereto
    • 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
    • F02M41/00—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor
    • F02M41/08—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor and pumping elements being combined
    • F02M41/14—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor and pumping elements being combined rotary distributor supporting pump pistons
    • F02M41/1405—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor and pumping elements being combined rotary distributor supporting pump pistons pistons being disposed radially with respect to rotation axis

Definitions

  • ABSTRACT lnjection device for a compression-ignited combustion engine comprising a modifying device between the injector and the fuel supply pump.
  • the modifying device operates by taking off and restoring fuel so as to modify the injection law of the injection device.
  • the injection device comprises an injection pump having a delivery chamber in which are movable pumping and/or distributing means which comprise first means for ensuring the non-simultaneous openings of communications between the delivery chamber and the injector and the delivery chamber and the modifying device.
  • the modifying device comprises means for retarding the restoration of the fuel taken off to the delivery chamber so long as the first means leave the modifying device in communication with the delivery chamber.
  • these devices comprise an injection pump, the pumping element or each pumping element of which is actuated by a cam rotated by the output shaft of the engine, the speed at which the pump is driven being consequently proportional to the running speed of the engine.
  • a regulating device which determines, as a function of the load and the speed of operation of the engine, the amount of fuel injected for each delivery stroke of the pump.
  • the object of the invention is to provide an injection device for a compression ignited internal combustion engine comprising an injection pump having a delivery chamber with which communicate at least one first inlet conduit, at least one second injection conduit connected to an injector, and a third conduit connected to a device modifying the injection law operating by taking off or deducting and restoring fuel and with which chamber there is associated at least one pumping and- /r distributing means whereby it is possible to effect in required operational speed ranges and for all load conditions the desired modification of the injection law without however modifying the amount of fuel injected.
  • the invention provides an injection device wherein said pumping and/or distributing means comprise first means for controlling the non-simultaneous opening of the connection of the first conduit and third conduit to the delivery chamber, the modifying device comprising means adapted to retard restoring the fuel taken off to the delivery chamber so long as said first means leave said third conduit connected to the delivery chamber.
  • the fact of deferring the restoration of the fuel taken off enables this restoration to be effected only after the delivery chamber has been put in communication with, and then once more out off from, the inlet conduit or, in other words, after this chamber has been once more supplied with fuel.
  • the fuel under pressure restored to the delivery chamber by the modifying device is not deducted from the amount of fuel injected and the engine can be correctly supplied with fuel.
  • the modifying device which is of the type comprising a take-off chamber
  • a take-off path and a return path there is provided between said third conduit and the take-off chamber a take-off path and a return path
  • the take-off path comprising a first valve or take-off" valve and a throttled passage formed in a piston movable in a bore which communicates with the take-off chamber
  • the return path comprising a passage which communicates laterally with said bore and has an opening controlled by the position of said piston and a second valve or discharge valve arranged to operate in opposition to the first valve.
  • FIGS. 1 and 2 are diagrams relating to a known injection device
  • FIG. 3 is a diagrammatic sectional view of a device according to the invention applied to a distributing P p
  • FIGS. 4 9 are diagrams showing the operation of the device shown in FIG. 3;
  • FIGS. 10 and 11 are partial sectional views of two modifications of the invention.
  • FlG. i2 is a diagram showing the advantage of the two modifications shown in FIGS. 10 and ll;
  • FIG. 13 is a partial sectional view of an arrangement according to the invention applied to an in-line pump
  • FIG. 14 is a partial sectional view taken along line 14-44 of FIG. 13, and
  • FIGS. 15 and 16 are two diagrams showing how the device shown in FIGS. 13 and M operates.
  • the pump P shown in FIG. 3 comprises a body l in which is formed a bore 2 receiving fuel delivery means which here take the form of a distributing valve element 3 which is rotated, via a mechanism (not shown), by the output shaft of the engine.
  • the body 1 is provided with a number of conduits which communicate with the bore 2, namely: a supply conduit 4 whose section of passage is regulated by an element 5 actuated by the regulating device known per se (not shown); at least one injection conduit 6 connected to an injector (not shown); and a conduit 7 connected to a device M which modifies the injection law.
  • the conduits s and 7 are contained in a common plane perpendicular to the axis of the bore 2.
  • the rotary distributor valve 3 has a blind axial bore 8 communicating with a delivery chamber 9 in which pistons or plungers 10 are caused to reciprocate by the action of an annular cam 11 when the distributor valve rotates.
  • the distributor valve has, furthermore, between the bore 8 and its periphery, radial passages 32 and 13 which are so disposed that the passage 12 can come into alignment with the conduits 4 and 7 and the pas sage 13 can come into alignment with the conduit 6.
  • the modifying device M associated with the injection pump P has a body 29 defining a cylindrical cavity .21, a screw-threaded end portion 22 screwed in the body 1 of the pump in alignment with the conduit 7 and a hollow screwthreaded plug 23 carrying an axial abutment 23a.
  • the end portion 22 has a longitudinal passage 24.
  • the cavity 21 receives a valve-carrier block 25 and a slide-carrier block 26 held in position by the plug 23. Sealing elements 27, 28, 29 are respectively provided between the end portion 22 and the body 1, between the block 25 and the body 20 and between the block 26 and the plug 23.
  • the block 25 has two longitudinal passages 30, 31 containing two check valves 32, 33 mounted in opposed relation.
  • the block 26 has a bore 34 in alignment with the passage 30 and containing a piston 35 constituting a slide valve including a flange 36 biased against the block 26 by a spring 37 having one end which bears against the end wall of the plug 23.
  • the block 26 also has a cranked passage 38 which communicates at one end with the bore 3 3 and at its other end with the facing passage 31 of the block 25.
  • the piston 35 has an axial passage 39 having a throttling portion or constriction 40, radial passages 41 and an annular recess 42.
  • a take-off chamber 413 of the modifying device is defined by the hollow plug 23 and the block 26. This chamber therefore has a fixed volume, but it is clear that it can be partially defined by a movable wall and have a variable volume, as disclosed in the aforementioned patents.
  • FIG. 1 shows two lines representing, as a function of the operational speed R, respectively (in dot-dash line) the amount of fuel qr supplied at full load by each delivery stroke of the injection pump, this amount being constant since it is determined by the profile of the cam actuating the pumping means, and (in full line) the amount of fuel qi in fact injected into the engine under the same conditions of full load.
  • the device modifying the law of injection which acts by taking off or withdrawing a part of the fuel at the start of injection, in fact produces throughout the range in which it operates, that is, for the operational speeds lower than speed N a decrease in the amount of fuel injected, which is of course quite disadvantageous.
  • FIGS. 4 and 5 show, as a function of a, corresponding to the angle of rotation of the distributor valve, respectively the movements d of the piston 35 (FIG. 6), the pressure P prevailing in the delivery chamber (FIG. 7), and the amount qi of fuel injected at full load (FIG. 8).
  • FIG. 9 shows the amount q of fuel delivered and injected at full load at each delivery stroke of the pump, as a function of the engine speed R.
  • the distributor valve 3 Under the control of a conventional mechanism (not shown), the distributor valve 3 is driven in rotation about its axis. For an angular position al of this distributor valve 3, the passage 13 is put in communication with the conduit 6 and the passage 12 is put in communication with the conduit 7. This state of affairs is represented by the segment I in the time diagram shown in FIG. 5. Simultaneously, the plungers Ill) reciprocate in the pumping chamber 9 so that fuel under pressure is pumped into the passages 12 and 13, to the modifying device M and an injector (not shown). For an angle of rotation a2 of the distributor valve, the pressure in the delivery chamber reaches a value which is sufficient to open the injector and consequently start the injection.
  • the outlet passage 38 is only opened after a certain period of time corresponding to the segment a3, at) in FIG. 6, and it can be seen that at the moment when this passage is once more opened, the communication between the delivery chamber, on one hand, and the conduits 6, 7,
  • the curve dN shown in full line in FIG. 6 just described corresponds to an engine speed N for which the piston 35 has time to come back to the left abutment opposed to abutment 23a, that is, to the position shown in FIG. 3, before the start of the following delivery and injection stage.
  • the dotted line d N corresponds to engine speed N, for which the piston has just time to move back to the left abutment opposed to abutment 23a at the moment when the following delivery stage starts. For speeds higher than this speed N the piston 35 has not returned to this left abutment at the moment 5 when the delivery stage starts and as its travel toward the abutment 23a is decreased, the modifying effect on the injection law is less.
  • This procedure corresponds to a stage of progressive elimination of the modifying device, full elimination being achieved at engine speed N; for which the piston 35 constantly closes the discharge orifice 38.
  • FIG. 7 shows as a function of angle a the value of the pressure P in the delivery chamber, in a pressure variation which is smaller; the curve in full line corresponding to the maximum modifying effect, the curve in dotted line corresponding to the stage of progressive elimination of the modifying effect and the dot-dash line corresponding to full elimination of the modifying effect.
  • FIG. 3 shows a pump in which the distributor valve rotates and causes reciprocation of the pump plungers It). It must be understood that the invention also applies to any other type of injection pump and in particular to a pump in which the pumping element and disof translation and rotation about an axis. Similarly, it is not essential that the injection conduit and the conduit communicating with the modifying device be opened and closed in a strictly simultaneous manner, since ajudstments may be made in this respect. Separate passages may also be provided in the distributor valve 3 for communication with the supply conduit 4 and the modifying device M. The illustrated arrangement was chosen merely for reasons of clarity.
  • FIGS. It) and It show two modification of a device according to the invention in which additional eliminating means are provided for achieving a modification in the injection law in an intermediate engine speed range N, N, (FIG. 112).
  • these additional eliminating means are interposed between the injection pump and the modifying device M and comprise a valve member 50' which is provided for example in the body 20 of the modifying device and receives a key 51 havtributor element undergo simultaneously a movement ing a radial passage 52.
  • Two diametrally opposed recesses 53, 54 are formed in the periphery of the key and communicate with the passage 52.
  • This key is controlled, for example, by the accelerating lever of the pump through a mechanism (not shown) and is adapted to close the passage of communication up to engine speed N,.
  • the elimination of the modifying device at speed N occurs as described hereinbefore in respect of the device shown in FIG. 3.
  • the additional eliminating means comprise a passage 60 formed in the body 20 of the modifying device M in a direction disposed transversely of the communication passage 24'.
  • a slide valve 61 is disposed in this passage db and a groove 62 is provided in the slide valve. The latter is maintained in equilibrium, on one hand, under the effect of a spring 63 and, on the other hand, under the effect of a pressure which may be, for example, the pressure from the supply pump or transfer pump transmitted by a pipe 6
  • a conduit 65 for the discharge of leakages is also provided.
  • this device operates in exactly the same manner as the device shown in FlG. It As the delivery pressure of the supply pump or transfer pump is proportional to the speed of the engine, when this pressure reaches a predetermined value, the groove 62 is brought in front of the passage 2d and thus permits the modifying device to come into action as explained hereinbefore.
  • a pump P comprises a cylinder 70 defining a delivery chamber 70a to which lead a supply conduit 71, an injection conduit 72 controlled by a valve 73 and a conduit 74 connected to a modifying device M.
  • fuel delivery means in the form of a piston 75 having a helical ramp 76 so that the angular position of the piston, governor or regulated by a regulator, determines the effective delivery stroke of this piston.
  • the latter also has a stop recess 77 and a L- shaped passage 78 which opens out laterally in a recess 79 whose upper edge is at a distance h from the upper edge of the piston and whose width and circumferential position are chosen in accordance with the conditions for which the modifying device is desired to operate.
  • the pump cylinder 70 has a cylindrical cavity 80 with which the conduit '74 communicates and which is adapted to receive a hollow end portion 81 equipped with a sealing joint and forming part of the body of the modifying device M.
  • the start of injection occurs in respect of the abscissa al (W68. 15 and 16).
  • the inlet conduit 7i is then closed and the conduit 74 communicating with the device M is opened.
  • the injecting stage continues until the abscissa point a'2 is reached.
  • the fuel, compressed and delivered by the pump piston is sent.,-on one hand, to the injector through the valve 73 and, on the other hand, to the modifying device M by way of the passage 78, the recess 79 and the conduit 74.
  • the piston 35 of the device having moved from its illustrated position, closes at point (a F d'l) the discharge conduit 38 comes in contact with the abutment 23a after a travel d'2.
  • the injection is ended by the opening of the conduit 7i by the helical ramp 76.
  • the discharge passage 38 is closed and the pressure in the chamber 43 cannot be relieved.
  • the supply conduit 71 is opened but the piston 35, although it moves away from the abutment 23a, has not yet uncovered the discharge passage 38 so that the fuel taken off during the injection stage can only be restored to the delivery chamber of the pump after the supply stage of the pump.
  • This restoration of fuel can only occur beyond the abscissa point a'l) placed after the point a4 where the supply conduit 71 is closed.
  • the chamber 43 can open and restore the fuel taken off, assuming of course that it concerns an engine operation range in respect of which a correction is made.
  • the manner of eliminating the device is identical to that described hereinbefore, that is to say, the piston 35 does not have sufficient time between two successive delivery strokes to move back beyond the abscissa point a'0 and the take-off chamber cannot be discharged, which eliminates. the injection law modifying action.
  • An injection device for a compression-ignited internal combustion engine comprising in combination a fuel injectionpump and a modifying device having a fuel take-off chamber for modifying the injection law of said injection pump and operative by taking off and restoring fuel, said injection pump comprising a body, means defining a delivery chamber in said body, a first conduit for connection to a fuel supply pump, a second conduit for connection to a fuel injector, a third conduit connected to said modifying device, injection fuel delivery means associated with said delivery chamber and capable of effecting a cyclic supply of fuel to the injector in each injection cycle and comprising first means for putting said delivery chamber alternately in communication with and out of communication with said first conduit, said second conduit and said third conduit during parts of each injection cycle and preeluding communication of said delivery chamber simultaneously with said third conduit and with said first conduit, and second means interposed between and controlling communication between said third conduit and said take-off chamber so as to allow fuel to be taken 05 and transferred from said delivery chamber to said take-off chamber when said first means put said
  • said second means comprise a take-off passage between said third conduit and said take-off chamber, and a return passage between said take-off chamber and said third conduit, said take-off passage comprising a first check valve openable to allow passage of takenoff fuel from said third conduit to said take-off chamber and means defining a bore communicating with said take-off chamber and a piston movable in said bore, a constricted passage in said piston and putting said take-off passage in communication with said takeoff chamber, said return passage comprising a lateral passage which communicates laterally with said bore, means for opening and closing said lateral passage in accordance with the position of said piston, and a second check valve inserted in said return passage and openable to allow passage of taken-off fuel from said take-off chamber to said third conduit.
  • constricted passage is in the form of a longitudinal bore constricted in the vicinity of an end thereof adjacent said first valve, and said piston has a radial passage and a peripheral recess put in communication with said longitudinal bore by said radial passage.
  • said modifying device comprises a hollow body having an end portion secured to said body of the injection pump, a longitudinal passage in said end portion, a valve-carrying unit carrying said first valve and second valve and a piston-carrying unit carrying said piston in said hollow body, a plug closing an end of said hollow body opposed to said end portion and retaining said units and defining said take-off chamber, said valvecarrying unit comprising a first longitudinal passage which is part of said take-off passage and a second longitudinal passage which is part of said return passage, said first valve and said second valve being respectively inserted in said first longitudinal passage and said second lontiguinal passage, said bore being provided in said piston-carrying unit in alignment with said first longitudinal passage.
  • An injection device as claimed in claim 2 comprising means defining abutment faces defining extreme positions of said piston and resiliently yieldable means biasing said piston to a position for opening said discharge passage.
  • An injection device as claimed in claim l comprising means defining abutment faces defining extreme positions of said piston and resiliently yieldable means biasing said piston to a position for opening said discharge passage, said abutment faces comprising a face on said piston-carrying unit and a face on a flange on the piston for one direction of piston movement and a face on a part of said plug and an end face of said piston for an opposite direction of movement of said piston.
  • An injection device as claimed in claim I further comprising a closing device interposed between said injection pump and said modifying device, said closing device being adapted and arranged to be controlled as a function of a parameter of operation of an engine for which the injection device is intended.
  • An injection device for a compression-ignited internal combustion engine comprising in combination a fuel injection pump and a modifying device having a fuel take-off chamber for modifying the injection law of said injection pump and operative by taking off and restoring fuel, said injection pump comprising a body, means defining a delivery chamber in said body, a first conduit for connection to a fuel supply pump, a second conduit for connection to a fuel injector, a third conduit connected to said modifying device, injection fuel delivery means associated with said delivery chamber and capable of effecting cyclic supply of fuel to the injector in each injection cycle and comprising first means for putting said delivery chamber alternately in communication with and out of communication with said first conduit, said second conduit and said third conduit during parts of each injection cycle and precluding communication of said delivery chamber simultaneously with said third conduit and with said first conduit, and second means interposed between and controlling communication between said third conduit and said take-off chamber so as to allow fuel to be taken off and transferred from said delivery chamber to said take-off chamber when said first means put said delivery chamber in communication with said
  • An injection device for a compression-ignited internal combustionengine comprising in combination an injection pump and a modifying device having a fuel take-ofi' chamber for modifying the injection law of said injection pump and operative by taking off and restoring fuel, said injection pump comprising a body, a delivery chamber in said body, a first conduit for connection to a fuel supply pump, a second conduit for said delivery chamber, and a third conduit connected to said modifying device, injection fuel delivery means disposed in said delivery chamber and capable of effecting a cyclic supply of fuel to the injector in each injection cycle and comprising, first means for putting said delivery chamber alternately in communication .with and out of communication with said first conduit and said third conduit during parts of each injection cycle and precluding communication of said delivery chamber simultaneously with said third conduit and with said first conduit, and second means interposed and controlling communication between said third conduit and said take-off chamber so as to allow fuel to be taken off and transferred from said delivery chamber to said take-off chamber when said first means put said delivery chamber in communication with 'said third

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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)
US00142169A 1970-06-08 1971-05-11 Injection devices for compression-ignited internal combustion engines Expired - Lifetime US3759239A (en)

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FR7020929A FR2093250A5 (enrdf_load_stackoverflow) 1970-06-08 1970-06-08

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JP (1) JPS527096B1 (enrdf_load_stackoverflow)
AT (1) AT308472B (enrdf_load_stackoverflow)
DE (1) DE2115169A1 (enrdf_load_stackoverflow)
FR (1) FR2093250A5 (enrdf_load_stackoverflow)
GB (1) GB1344841A (enrdf_load_stackoverflow)
SU (1) SU743592A3 (enrdf_load_stackoverflow)

Cited By (19)

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US4033301A (en) * 1975-07-10 1977-07-05 Eaton Corporation Fluid distributor logic
US4140095A (en) * 1976-04-20 1979-02-20 Lucas Industries Limited Liquid fuel pumping apparatus
US4176640A (en) * 1976-04-20 1979-12-04 Lucas Industries, Limited Fuel injection pumping apparatus
US4401082A (en) * 1980-03-27 1983-08-30 Robert Bosch Gmbh Fuel injection pump for internal combustion engines
US4535742A (en) * 1983-05-19 1985-08-20 Robert Bosch Gmbh Fuel injection pump for internal combustion engines
US4552117A (en) * 1984-10-09 1985-11-12 Stanadyne, Inc. Fuel injection pump with spill control mechanism
US4564341A (en) * 1983-05-04 1986-01-14 Nissan Motor Company, Limited Fuel injection pump for an internal combustion engine
US4644924A (en) * 1984-10-09 1987-02-24 Stanadyne, Inc. Fuel injection pump with spill control mechanism
US4667641A (en) * 1985-09-23 1987-05-26 Stanadyne, Inc. Injection pump with radially mounted spill control valve
US4681080A (en) * 1984-11-23 1987-07-21 A V L Gesellschaft fur Verbrennungskraftmaschinen und Messtechnik mbh Prof. Dr.Dr. h.c. Hans List Device for the temporary interruption of the pressure build-up in a fuel injection pump
US4696271A (en) * 1984-01-11 1987-09-29 Robert Bosch Gmbh Fuel injection pump
US4730585A (en) * 1985-06-28 1988-03-15 Nippon Soken, Inc. Diesel engine fuel injection system with a rate-of-injection control arrangement
US5015160A (en) * 1988-06-18 1991-05-14 Robert Bosch Gmbh Injection pump for internal combustion engines
US5564394A (en) * 1993-11-05 1996-10-15 Lucas Industries Public Limited Company Control valve
US6109536A (en) * 1998-05-14 2000-08-29 Caterpillar Inc. Fuel injection system with cyclic intermittent spray from nozzle
US20040025830A1 (en) * 2002-05-03 2004-02-12 Draper David E. Fuel system
US20090199820A1 (en) * 2006-05-04 2009-08-13 Robert Bosch Gmbh Pressure control valve with limp-home and ventilation function
US20110259302A1 (en) * 2008-10-27 2011-10-27 Hyundai Heavy Industries Co., Ltd. Apparatus for preventing cavitation damage to a diesel engine fuel injection pump
US11035331B2 (en) * 2018-01-31 2021-06-15 Jonathan Tom Tavernier Internal combustion engine with tubular fuel injection

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DE2503346C2 (de) * 1975-01-28 1986-04-03 Robert Bosch Gmbh, 7000 Stuttgart Kraftstoffverteilereinspritzpumpe für Brennkraftmaschinen
DE2833431C2 (de) * 1978-07-29 1987-05-14 Robert Bosch Gmbh, 7000 Stuttgart Kraftstoffeinspritzdüse für Brennkraftmaschinen
GB2116263B (en) * 1982-02-20 1985-10-09 Lucas Ind Plc Fuel injection pumping apparatus
DE3307828A1 (de) * 1983-03-05 1984-09-06 Robert Bosch Gmbh, 7000 Stuttgart Kraftstoffeinspritzeinrichtung fuer brennkraftmaschinen
DE3310049A1 (de) * 1983-03-19 1984-09-20 Robert Bosch Gmbh, 7000 Stuttgart Kraftstoffeinspritzeinrichtung zur einspritzung einer aus mindestens zwei komponenten bestehenden kraftstoffmischung
DE3624092C2 (de) * 1986-07-17 1998-01-29 Guenter Stein Kraftstoffeinspritzpumpe für Brennkraftmaschinen
GB8709038D0 (en) * 1987-04-15 1987-05-20 Perkins Engines Group Fuel injection
ES2115882T3 (es) * 1993-09-14 1998-07-01 Lucas Ind Plc Sistema de combustible.

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US2250877A (en) * 1939-05-19 1941-07-29 Kloeckner Humboldt Deutz Ag Fuel injector for internal combustion engines
US2914042A (en) * 1948-10-13 1959-11-24 Rieseler Helene Internal combustion engine
GB810456A (en) * 1954-10-06 1959-03-18 British Internal Combust Eng Improvements in or relating to liquid fuel injection systems for internal combustion engines
US3394891A (en) * 1965-12-31 1968-07-30 Bosch Gmbh Robert Fuel injection nozzle arrangement for preinjection and main injection of fuel
US3456629A (en) * 1966-08-01 1969-07-22 Peugeot Fuel injection devices for compression ignited internal combustion engines
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Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4033301A (en) * 1975-07-10 1977-07-05 Eaton Corporation Fluid distributor logic
US4140095A (en) * 1976-04-20 1979-02-20 Lucas Industries Limited Liquid fuel pumping apparatus
US4176640A (en) * 1976-04-20 1979-12-04 Lucas Industries, Limited Fuel injection pumping apparatus
US4401082A (en) * 1980-03-27 1983-08-30 Robert Bosch Gmbh Fuel injection pump for internal combustion engines
US4564341A (en) * 1983-05-04 1986-01-14 Nissan Motor Company, Limited Fuel injection pump for an internal combustion engine
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Also Published As

Publication number Publication date
FR2093250A5 (enrdf_load_stackoverflow) 1972-01-28
AT308472B (de) 1973-07-10
JPS527096B1 (enrdf_load_stackoverflow) 1977-02-28
DE2115169A1 (de) 1971-12-16
SU743592A3 (ru) 1980-06-25
GB1344841A (en) 1974-01-23

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