US2264914A - Injection nozzle - Google Patents

Injection nozzle Download PDF

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Publication number
US2264914A
US2264914A US199621A US19962138A US2264914A US 2264914 A US2264914 A US 2264914A US 199621 A US199621 A US 199621A US 19962138 A US19962138 A US 19962138A US 2264914 A US2264914 A US 2264914A
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Prior art keywords
cylinder
fuel
nozzle
sleeve
opening
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US199621A
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L Orange Rudolf
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L Orange Rudolf
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M53/00Fuel-injection apparatus characterised by having heating, cooling or thermally-insulating means
    • F02M53/04Injectors with heating, cooling, or thermally-insulating means
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M53/00Fuel-injection apparatus characterised by having heating, cooling or thermally-insulating means
    • F02M53/04Injectors with heating, cooling, or thermally-insulating means
    • F02M53/08Injectors with heating, cooling, or thermally-insulating means with air cooling
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/04Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
    • F02M61/08Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series the valves opening in direction of fuel flow
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/14Arrangements of injectors with respect to engines; Mounting of injectors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M2700/00Supplying, feeding or preparing air, fuel, fuel air mixtures or auxiliary fluids for a combustion engine; Use of exhaust gas; Compressors for piston engines
    • F02M2700/07Nozzles and injectors with controllable fuel supply
    • F02M2700/077Injectors having cooling or heating means

Description

R. LORANGE INJECTION NozzLE Filed Apil 2, 193s Dec. 2, 1941.
Patenie'd Dec. 2, 1941 Rudolf LOrange, Stuttgart-Feuerbach, Germany Aptucation Api-i1 z, 193s, serial No. 199,621 In Germany July 26, 1937 8 Claims.
The present invention relates to injection nozwater or other liquid cooling agent or with air.
These cooling agents were sumcient so long as only oil of a fairly high boiling point was used. Many experiments have shown, however, that it is very difficult to cool the cylinder head and the injection nozzle located therein to temperatures below 60.l This, however, is necessary in the case of volatile fuels in order to prevent the formation of gas bubbles and thence a faulty operation of the injection system and missing of the engine.
. In connection with this necessary low temperature the hitherto so-called cold transmitting" agents are in reality heat transmitting agents.
The present invention is based on this fact and consists in that the injection nozzle is protected by means of insulation from the cylinder head side walls, hitherto considered as a cooling agent, and also in that the low temperature of the light oil itself is'used for cooling the nozzle.
Thus, according to the present invention the fuel is led to the nozzle in as cold a condition as possi-ble, and is protected therein from any heating by conduction or radiation from the engine cylinder.
The means used for this purpose consist rstly in a highly eflicient insulation of -the whole fuel path in and on the cylinder, and secondly, in decreasing to the minimum possible the quantity of fuel located in this region.
Due to the lattermeans a rapid change of the fuel in this region is e'ected so that there is no time available for absorbing heat but the newly arriving fuel always sufficiently cools the .fuel still remaining.
In the accompanying drawing,
Fig. 1 shows in section such a nozzle which is formed in the known manner as an open injection nozzle with a simple check non-return valve,
Fig. 2 shows in section a nozzle with external valve Spring.
Fig. 3 shows in section, a nozzle with its orices set in a predetermined direction, and Figs. 3a 4and 3b show two forms of a detail of Fig. 3.
In Figure 1 a is a part of the cylinder or cylinder cover of a fuel injection engine operating 'on light oil. b is the actual injection nozzle provided with atomizing orices h to which the fuel arrives through the bore g' which is made as narrow as possible. Above said bore is provided a simple check non-retum valve e seated in a union member c. The whole nozzle body is constrained on its seat It -by means of the securing screw d.
The atomizer part b is protected from the cylinder walls by insulation f which may consist of asbestos, mica or any other suitable material, and for practical reasons the insulating material is held together by means of an insulating protecting sleeve t. 'I'he heat absorbing surface of the atomizer part b and the upper surface of the minf into this through the axial central aperture,
thence through radial apertures l into the lter ring space B, the dimension of which is adjusted according to the ineness of the lter. Particles which have greater dimensions than that of the iilter apertures in the-space 8 are retained here. From 8 the fuel again ows back into the main central channel through the radial apertures 9.
The insulating air Ilayer hereinabove described provides in a very complete manner the insulation for the nozzle cooled by the fuel, Fig. .2. Between the nozzle body u and the cylinder walls a is provided an ample air insulating space y which is in communication with thel outer air through the slit l formed in the screw thread.
By means of an yaperture i, which may forexample be connected to the suction pipe, this air is continuously'renewed so that an eiilcient insulating agent is thus formed between the injection nozzle cooled by the fuel and thecylinder walls.
Furthermore, in this embodiment the check non-return valve e is formed with an externally located spring and the atomizer part hjin the nozzle body u is screwed in from below. Similar to the securing screw in the preceding example, in this case the nozzle body u carries the heat radiating surfaces v.
In Fig. 3 is shown, similar to Fig. l, an embodiment wherein the atomizing orifices h are set in a. determined direction by means of prismatic guides w.
In this case the heat insulation is provided in that in the somewhat larger atomizer part b is inserted a filler tube This simple form of insulation is based on the observation that the surface resistance to heat transmission is very considerable, and can replace an insulation o1' substantial thickness. The inner tube z is therefore inserted so firmly that it remains seated in its aperture without any further securing means, but it is however provided with a certain thin insulating layer on its outer surface either by oxidation, or a very fine layer of graphite or carbon, or by being moistened with water glass before its insertion. It may also be provided with a slightly turned part or annular ring, but care must, however, be taken that this is so well sealed off above and below from the light oil, or is so firmly packed with insulating material, that any moistening with fuel is prevented.
The outer end of the tube .r may be adapted to act as a stop for the check non-return valve e which is, in this case, formed as a ball valve.
In addition to the heat insulation described above there is also provided in this case an additional insulation by specially increasing the air space y which is aerated through the apertures i.
In one specially practicable form the air insulating space y in the present example is formed in-such a way that the part of the atomizing member b outside the seat k of the injection nozzle has a smaller diameter than that of the nozzle seat itself, so that in this way without any further increase in dimensions an ample heat insulating air layer is former. In this example the nozzle holding screw is screwed against the nozzle holder z which is provided with the above-mentioned aerating orifice i, and which in its turn is screwed in the cylinder a.
Furthermore, in this example, a filter cartridge is provided in the connecting part c consisting of the screw threaded member q, the tubular member m provided with an inclined slot and the filter o. The filter consists of lead having very ne perforations or wire gauze, but preferably of a combination of fine wire sieves on the outer side and coarse gauze sieves on the inner side, capable of acting as a support.
The elements q, m and o may be advantageously formed together as a common cartridgelike member.
The outer fine gauze is advantageously made liner than the diameter of the nozzle apertures so that at this place those impurities of the fuel which were originally in the injection pump or which penetrate into the fuel by scaling oif from the pressure conduits, are retained.
By means of the stepped construction of the wire sieves according to the present invention an extension of the fuel space and thence an increase in its surface is completely avoided and also any return of the fuel which is prejudicial in the case of the high liquid velocity desired, is prevented. By the length of the sieves it is easy to make the section of passage as great as desired without appreciably varying the diameter of the tube.
In the embodiment of Fig. 3, since the atomiser nozzle is fixed by the guides w special arrangementsof atomiser orifices may be provided. For injection perpendicular or approximately perpendicular to the cylinder axis it is especially advantageous to arrange the atomiser orifices in oval form adapted according to the existing combustion chamber. Such an arrangement is shown in Fig. 3a wherein the two axes of the ellipse formed by the atomiser orifices do not differ considerably. In Fig. 3b a modified arrangement is shown wherein the oval is very ilat.
I claim:
1. A fuel oil injection nozzle for insertion in an opening in the cylinder wall of an internal combustion engine, said nozzle including a body portion having an axially-extending bore through which the fuel passes on its way to the cylinder, a part of said body portion being within the opening in the cylinder wall and spaced from the wall dening said opening to form an air space between said body portion and said wall and a part of said body portion extending outwardly beyond the cylinder wall, and a cap engaging said outwardly-extending portion and a portion secured to said cylinder wall to retain said body portion within said opening, said cap having openings through the top thereof, with air passages located between the air space surrounding that part of the body portion within the opening and the openings in said top to permit circulation of air through said air space, passages, and openings to effect cooling of said body portion.
2. A fuel oil injection nozzle as defined in claim 1 in which heat insulating material is applied to the outer surface of the body portion that is within the opening in the cylinder wail.
3. A fuel oil injection nozzle as defined in i claim 1 in which the fuel passage through the body portion is lined with a conduit having its exterior surface provided with a coating of heat insulating material in contact with the inner surface of the fuel passage.
4. A fuel oil injection nozzle for insertion in an opening in the cylinder wall of an internal combustion engine, said nozzle including a body portion having an axially-extending bore through which the fuel passes on its way to the cylinder, the inner end of said body portion having a plurality of atoniizer orifices for injecting the fucl into the cylinder, a part of said body portion being within the opening in the cylinder wall and spaced from the wall defining said opening to -form an air space between said body portion and said wall, and a part of said body portion extending outwardly beyond the cylinder wall and having a radially-extending lug thereon, and means for retaining said body portion within said opening, said means having passages extending therethrough and communicating with the air space surrounding said body portion to permit circulation of air through said passages and air space to effect cooling of said body portion, and said radially-extending lug being confined between the spaced walls of one of said passages to retain the atomizer orifices in fixed position with respect to the cylinder.
5. A fuel injection nozzle for insertion in an opening in the cylinder wall of an internal combustion engine, said nozzle including a body portion having an axially-extending bore through Y which the fuel passes on its way to the cylinder.
the inner end of said body portion having a plurality of atomizer orifices for injecting the fuel into the cylinder, a part of said body portion being within the opening in the cylinder wall and spaced from the wall deiining said opening to form an air space between said body portion and said wall, and a. part of said body portion extending outwardly beyond the cylinder wall and having a radially-extending lug-thereon, a sleeve secured to the cylinder wall and surrounding said outwardly-extending part of the body p0rtion, said sleeve having a slot therein in communication with the air space surrounding said body portion and adapted to receive and retain the radially-extending lug on said body portion to maintain the atomizer oriflces in xed position with respect to the cylinder, and a cap engaging said outwardly-extending part of said body portion and the sleeve secured to said cylinder wall to retain the body portion within s'a-id opening, said cap having an opening through the top thereof in communication with the slot in the sleeve to permit circulation of air through said air space, slot and opening to effect cooling of said body portion.
6. A yfuel injection nozzle for insertion in an opening in the cylinder wall of an internal'combustion engine, said nozzle including a body portion having -an axially-extending fuel passage therethrough, a sleeve surrounding said body portion and spaced therefrom to provide an air space between saidsleeve and body portion, said sleeve having openings therethrough communicating with said air space, and a cap secured to said sleeve and enclosing and engaging the upper end of the nozzle body portion for retaining said body portion in Iiixed'positon within said sleeve, said cap having an air passage therethrough communicating with the air space between said sleeve and body portion.
7. A -fuel injection nozzle for insertion in an opening lin the cylinder wall'of an internal comlbustion engine said nozzle including a body portherethrough terminating in a plurality of atomizer oriiices, a sleeve surrounding said body portion and spaced therefrom to provide an air space between said sleeve and body portion, said sleeve having an opening therethrough communicating with said air space, and a cap engaging said sleeve and said body portion for retaining said body portion' in xed position within said4 sleeve, said cap having an air passage therethrough communicating with the air space between said sleeve and body portion, whereby air may circulate through the opening in the sleeve, the air space between the sleeve and body portion and through the air passage through-the cap.
8. A fuel injection nozzle for insertion in an opening in the cylinder wall of an internal combustion engine, said nozzle including a body portion having an axially-extending` fuel passage therethrough terminating in a plurality of atomizer 'oriiices and said body portion having a radially-extending lug thereon, a 'sleeve surrounding said body portion and spaced therefrom to provide an air space between said sleeve and body portion, said sleeve having an opening therethrough communicating with said air space and having a slot to receive and retain the radially-extending lug to prevent relative rotation between the sleeve and body portion, and means for securing the sleeve and body portion together, said means having a passage therethrough communicating with the air space between the sleeve and body portion whereby air may circulate through the opening in the sleeve, the air space between the sleeve and body portion and through said passage.
RUDOLF LORANGE.
tion having an axially-extending fuel passage
US199621A 1937-07-26 1938-04-02 Injection nozzle Expired - Lifetime US2264914A (en)

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Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2809868A (en) * 1953-10-01 1957-10-15 Sabre Res Corp Fuel pump and fuel injector combination
US2815645A (en) * 1955-03-01 1957-12-10 Gen Electric Super-critical pressure elastic fluid turbine
US2854284A (en) * 1955-06-29 1958-09-30 Oakite Prod Inc Cleaning apparatus
US2860859A (en) * 1956-09-10 1958-11-18 Gen Motors Corp Fuel injection nozzle
US2885335A (en) * 1954-05-11 1959-05-05 Moore Richard Valentine Nuclear reactor fuel element
US2930334A (en) * 1956-05-11 1960-03-29 Coastal Supply & Chemical Comp Apparatus for soil treatment
US3612012A (en) * 1969-12-04 1971-10-12 Allis Chalmers Mfg Co Fuel injection nozzle
US4928491A (en) * 1988-06-29 1990-05-29 United States Of America As Represented By The Secretary Of Air Force Fuel supply device for supplying fuel to an engine combustor
US5058549A (en) * 1988-02-26 1991-10-22 Toyota Jidosha Kabushiki Kaisha Fuel swirl generation type fuel injection valve and direct fuel injection type spark ignition internal combustion engine
US5104043A (en) * 1990-01-19 1992-04-14 Butterworth Jetting Systems, Inc. Magnetic speed control for self-propelled swivel
US5291869A (en) * 1993-05-28 1994-03-08 Bennett David E Liquified petroleum gas fuel supply system
US5325838A (en) * 1993-05-28 1994-07-05 Bennett David E Liquified petroleum gas fuel injector
US5605105A (en) * 1994-10-17 1997-02-25 Great Plains Manufacturing, Incorporated Method and apparatus for placing dry or liquid materials into the soil subsurface without tillage tools
US6119658A (en) * 1998-08-26 2000-09-19 Daimlerchrysler Ag Fuel nozzle injecting onto the combustion space of an internal combust
US6216675B1 (en) 1997-05-13 2001-04-17 Bi-Phase Technologies, L.L.C. System and condenser for fuel injection system
US6227173B1 (en) 1999-06-07 2001-05-08 Bi-Phase Technologies, L.L.C. Fuel line arrangement for LPG system, and method
US6234143B1 (en) 1999-07-19 2001-05-22 Mack Trucks, Inc. Engine exhaust brake having a single valve actuation
US6276338B1 (en) * 1998-12-17 2001-08-21 Sanshin Kogyo Kabushiki Kaisha Direct fuel injection for engine
US6283091B1 (en) 2000-01-14 2001-09-04 Mack Trucks, Inc. Method and apparatus for controlling nozzle temperature during engine braking
US6412450B1 (en) * 1996-09-06 2002-07-02 Vialle Beheer B.V. Injection device
WO2004085828A2 (en) * 2003-03-27 2004-10-07 Siemens Aktiengesellschaft Direct injection valve in a cylinder head
US20080295806A1 (en) * 2007-06-04 2008-12-04 Caterpillar Inc. Heat conducting sleeve for a fuel injector
US20090133402A1 (en) * 2007-11-28 2009-05-28 James Scott Piper Gas turbine fuel injector with insulating air shroud
US20130042473A1 (en) * 2011-08-17 2013-02-21 Spx Corporation Injector nozzle sleeve replacer and method
US10851786B2 (en) 2017-09-27 2020-12-01 Ingersoll-Rand Industrial U.S., Inc. Rotary screw compressor with atomized oil injection

Cited By (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2809868A (en) * 1953-10-01 1957-10-15 Sabre Res Corp Fuel pump and fuel injector combination
US2885335A (en) * 1954-05-11 1959-05-05 Moore Richard Valentine Nuclear reactor fuel element
US2815645A (en) * 1955-03-01 1957-12-10 Gen Electric Super-critical pressure elastic fluid turbine
US2854284A (en) * 1955-06-29 1958-09-30 Oakite Prod Inc Cleaning apparatus
US2930334A (en) * 1956-05-11 1960-03-29 Coastal Supply & Chemical Comp Apparatus for soil treatment
US2860859A (en) * 1956-09-10 1958-11-18 Gen Motors Corp Fuel injection nozzle
US3612012A (en) * 1969-12-04 1971-10-12 Allis Chalmers Mfg Co Fuel injection nozzle
US5058549A (en) * 1988-02-26 1991-10-22 Toyota Jidosha Kabushiki Kaisha Fuel swirl generation type fuel injection valve and direct fuel injection type spark ignition internal combustion engine
US4928491A (en) * 1988-06-29 1990-05-29 United States Of America As Represented By The Secretary Of Air Force Fuel supply device for supplying fuel to an engine combustor
US5104043A (en) * 1990-01-19 1992-04-14 Butterworth Jetting Systems, Inc. Magnetic speed control for self-propelled swivel
US5291869A (en) * 1993-05-28 1994-03-08 Bennett David E Liquified petroleum gas fuel supply system
US5325838A (en) * 1993-05-28 1994-07-05 Bennett David E Liquified petroleum gas fuel injector
US5605105A (en) * 1994-10-17 1997-02-25 Great Plains Manufacturing, Incorporated Method and apparatus for placing dry or liquid materials into the soil subsurface without tillage tools
US6412450B1 (en) * 1996-09-06 2002-07-02 Vialle Beheer B.V. Injection device
US6216675B1 (en) 1997-05-13 2001-04-17 Bi-Phase Technologies, L.L.C. System and condenser for fuel injection system
US6119658A (en) * 1998-08-26 2000-09-19 Daimlerchrysler Ag Fuel nozzle injecting onto the combustion space of an internal combust
US6276338B1 (en) * 1998-12-17 2001-08-21 Sanshin Kogyo Kabushiki Kaisha Direct fuel injection for engine
US6227173B1 (en) 1999-06-07 2001-05-08 Bi-Phase Technologies, L.L.C. Fuel line arrangement for LPG system, and method
US6234143B1 (en) 1999-07-19 2001-05-22 Mack Trucks, Inc. Engine exhaust brake having a single valve actuation
US6283091B1 (en) 2000-01-14 2001-09-04 Mack Trucks, Inc. Method and apparatus for controlling nozzle temperature during engine braking
WO2004085828A2 (en) * 2003-03-27 2004-10-07 Siemens Aktiengesellschaft Direct injection valve in a cylinder head
WO2004085828A3 (en) * 2003-03-27 2005-02-17 Bernhard Gottlieb Direct injection valve in a cylinder head
US20060157034A1 (en) * 2003-03-27 2006-07-20 Bernhard Gottlieb Direct injection valve in a cylinder head
US7418947B2 (en) 2003-03-27 2008-09-02 Siemens Aktiengesellschaft Direct injection valve in a cylinder head
US20080295806A1 (en) * 2007-06-04 2008-12-04 Caterpillar Inc. Heat conducting sleeve for a fuel injector
US20090133402A1 (en) * 2007-11-28 2009-05-28 James Scott Piper Gas turbine fuel injector with insulating air shroud
CN101446211A (en) * 2007-11-28 2009-06-03 索拉透平公司 Gas turbine fuel injector with insulating air shroud
CN101446211B (en) * 2007-11-28 2014-04-16 索拉透平公司 Gas turbine fuel injector with insulating air shroud
US8393155B2 (en) * 2007-11-28 2013-03-12 Solar Turbines Incorporated Gas turbine fuel injector with insulating air shroud
US20130042473A1 (en) * 2011-08-17 2013-02-21 Spx Corporation Injector nozzle sleeve replacer and method
US8707556B2 (en) * 2011-08-17 2014-04-29 Bosch Automotive Service Solutions Llc Injector nozzle sleeve replacer and method
US10851786B2 (en) 2017-09-27 2020-12-01 Ingersoll-Rand Industrial U.S., Inc. Rotary screw compressor with atomized oil injection

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FR832226A (en) 1938-09-23

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