US3628736A - Liquid supply nozzles - Google Patents
Liquid supply nozzles Download PDFInfo
- Publication number
- US3628736A US3628736A US13518A US3628736DA US3628736A US 3628736 A US3628736 A US 3628736A US 13518 A US13518 A US 13518A US 3628736D A US3628736D A US 3628736DA US 3628736 A US3628736 A US 3628736A
- Authority
- US
- United States
- Prior art keywords
- nozzle
- valve member
- head
- liquid
- orifice
- 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
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 31
- 239000000446 fuel Substances 0.000 claims description 13
- 238000002485 combustion reaction Methods 0.000 claims description 8
- 230000006835 compression Effects 0.000 claims description 5
- 238000007906 compression Methods 0.000 claims description 5
- 239000012530 fluid Substances 0.000 abstract description 6
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000000567 combustion gas Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Images
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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
- F02M61/042—The valves being provided with fuel passages
-
- 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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
- F02M61/042—The valves being provided with fuel passages
- F02M61/045—The valves being provided with fuel discharge orifices
-
- 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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/20—Closing valves mechanically, e.g. arrangements of springs or weights or permanent magnets; Damping of valve lift
Definitions
- a liquid supply nozzle including a valve member which is movable by the action of fluid under pressure within a chamber to pennit such fluid to flow through an outlet orifice, the valve member being resiliently loaded by means of a spring and the spring being formed from tube and serving to convey the fluid under pressure to the aforesaid chamber.
- This invention relates to liquid supply nozzles of the kind comprising a nozzle head, an orifice formed in the head, a valve member slidable in the head for controlling the flow of liquid through the orifice from an inlet, resilient means acting to a position in which the fiow of liquid through the orifice is prevented and a chamber to which liquid under pressure can be supplied, said liquid under pressure acting to move the valve member away from said position thereby to permit the fiow of liquid through said orifice.
- the object of the invention is to provide such a nozzle in a simple and convenient form.
- a nozzle of the kind specified is characterized in that the resilient means is formed from tube, the tube acting to convey liquid from the inlet to said chamber.
- liquid supply nozzle in accordance with the invention will now be described with reference to the accompanying drawing which shows a nozzle suitable for injecting liquid fuel under pressure to the combustion space of an internal combustion engine of the compression-ignition type.
- the drawing shows the wall of a cylinder head of the engine and having an inlet passage 11 controlled by a poppet valve 12.
- a poppet valve 12 Formed in the wall of the cylinder head 10 is a stepped bore 13 the narrower end of which is in communication with the combustion chamber.
- a liquid fuel injection nozzle mounted within the stepped bore 13 is a liquid fuel injection nozzle generally indicated at 14.
- the nozzle comprises a tubular body portion 15 which at one end is provided with a peripheral screw thread.
- a complementarily internally threaded retaining member 16 for engagement with this thread there is provided a complementarily internally threaded retaining member 16 and which when engaged, retains a stepped cylindrical nozzle head 18 relative to the body portion.
- an apertured stop plate 17 is intermediate the nozzle head 18 and the body portion.
- a bore 19 Formed in the nozzle head is a bore 19 which at the end of the nozzle head which is exposed to the combustion chamber, tapers inwardly to define a seating 21. Furthermore, the bore is in communication with an orifice 22 through which liquid fuel can enter the combustion space of the engine. Slidable within the bore 19 is a valve member which is shaped for cooperation with the seating 21. The bore 19 intermediate its ends is enlarged to define in conjunction with a narrowed portion of the valve member, a chamber 23.
- the valve member 20 is urged towards a closed position in which it cooperates with the seating 21, by means of a coiled compression spring 24.
- This spring is accommodated within the body portion 15 and is formed as a tube.
- One end of the spring is secured to the valve member 20 and the tube communicates with a passage 25 which is formed in the valve member and which is extended so that it communicates with the chamber 23.
- the other end of the spring is secured to a plug 26 which is in screw thread engagement with the body portion and formed within the plug is a passage 27 which communicates with an inlet 28.
- liquid fuel under pressure applied to the inlet 28 will flow to the chamber 23 and the pressure of fuel will urge the valve member 20 against the action of the spring.
- any convenient form of clamping arrangement may be provided and such an arrangement is indicated in dotted outline at 29. Furthermore, in order to prevent escape of combustion gases there is located between the step defined in the bore 13 and the member 16, a washer 30.
- the clearance which is defined between the bore 13 and the nozzle communicates with the adjacent air inlet passage 11 of the engine by way of a passage 33 and a seal ring 34 is provided to provide a seal between the body portion and the wall of the bore 13 adjacent the wider end thereof.
- a liquid fuel supply nozzle for an internal combustion engine and comprising a nozzle head and a nozzle body to which the head is secured, an orifice formed in the head, a chamber formed in the head and communicating with said orifice, a valve member slidable in the head for controlling the flow of liquid from the chamber through the orifice, resilient means acting to urge the valve member to a position in which the flow of liquid through the orifice is prevented, an inlet for liquid under pressure, a coiled compression spring constituting said resilient means, said coiled compression spring being formed from tube, said tube-forming part of a flow path of liquid from said inlet to said chamber, said liquid under pressure in the chamber acting to move the valve member away from said position against the action of the spring, thereby to permit the flow of liquid through said orifice.
- a nozzle as claimed in claim 1 including a passage in the valve member, one end of the tube forming the spring being secured to said valve member so that the interior of the tube communicating with said passage and the passage forms part of said flow path.
- a nozzle as claimed in claim 2 in which said body is hollow, and including means for securing the nozzle head to one end of said body, a plug engaged within the other end of said body, said plug defining said inlet, and the other end of said tube being secured to said plug and passage means through which the interior of the body is in communication with the exterior of the body.
- a nozzle as claimed in claim 3 in which said means for securing the nozzle head to the body part comprises a retaining member which is in screw-thread engagement with the body part and which defines a lip for engagement with a step on the nozzle head.
Abstract
A liquid supply nozzle including a valve member which is movable by the action of fluid under pressure within a chamber to permit such fluid to flow through an outlet orifice, the valve member being resiliently loaded by means of a spring and the spring being formed from tube and serving to convey the fluid under pressure to the aforesaid chamber.
Description
United States Patent inventor Dorian Fnrrar Mowbrey Bnrnlum, Bnekinglnmshire, England 13,518 Feb. 24, 1970 Dec. 21, 1971 C.A.V. Limited Birmingham, Med Mar. 5, 1969 Great Britain Appl. No. Filed Patented Assignee Priority LIQUID SUPPLY NOZZLES 4 Claims, 1 Drawing Fig.
U.S. Cl 239/533, 123/131, 239/602, 267/182 Int. Cl. B051) l/32 Field of Search 239/533, 534, 584, 585, 602; 267/182; 123/131 [56] References Cited UNITED STATES PATENTS 3,188,035 6/1965 Owen 267/182 X FOREIGN PATENTS 1,135,795 12/ 1968 Great Britain 239/534 1,218,966 12/1959 France 239/534 Primary Examiner-M. Henson Wood, Jr. Assistant ExaminerMichael Y. Mar Atlorneyliolman, Glascock, Downing 8L Seebold ABSTRACT: A liquid supply nozzle including a valve member which is movable by the action of fluid under pressure within a chamber to pennit such fluid to flow through an outlet orifice, the valve member being resiliently loaded by means of a spring and the spring being formed from tube and serving to convey the fluid under pressure to the aforesaid chamber.
PATENTEB DEBZI ran LIQUID SUPPLY NOZZLES This invention relates to liquid supply nozzles of the kind comprising a nozzle head, an orifice formed in the head, a valve member slidable in the head for controlling the flow of liquid through the orifice from an inlet, resilient means acting to a position in which the fiow of liquid through the orifice is prevented and a chamber to which liquid under pressure can be supplied, said liquid under pressure acting to move the valve member away from said position thereby to permit the fiow of liquid through said orifice.
The object of the invention is to provide such a nozzle in a simple and convenient form.
According to the invention a nozzle of the kind specified is characterized in that the resilient means is formed from tube, the tube acting to convey liquid from the inlet to said chamber.
One example of a liquid supply nozzle in accordance with the invention will now be described with reference to the accompanying drawing which shows a nozzle suitable for injecting liquid fuel under pressure to the combustion space of an internal combustion engine of the compression-ignition type.
The drawing shows the wall of a cylinder head of the engine and having an inlet passage 11 controlled by a poppet valve 12. Formed in the wall of the cylinder head 10 is a stepped bore 13 the narrower end of which is in communication with the combustion chamber.
Mounted within the stepped bore 13 is a liquid fuel injection nozzle generally indicated at 14. The nozzle comprises a tubular body portion 15 which at one end is provided with a peripheral screw thread. For engagement with this thread there is provided a complementarily internally threaded retaining member 16 and which when engaged, retains a stepped cylindrical nozzle head 18 relative to the body portion. Moreover, intermediate the nozzle head 18 and the body portion is an apertured stop plate 17.
Formed in the nozzle head is a bore 19 which at the end of the nozzle head which is exposed to the combustion chamber, tapers inwardly to define a seating 21. Furthermore, the bore is in communication with an orifice 22 through which liquid fuel can enter the combustion space of the engine. Slidable within the bore 19 is a valve member which is shaped for cooperation with the seating 21. The bore 19 intermediate its ends is enlarged to define in conjunction with a narrowed portion of the valve member, a chamber 23.
The valve member 20 is urged towards a closed position in which it cooperates with the seating 21, by means of a coiled compression spring 24. This spring is accommodated within the body portion 15 and is formed as a tube. One end of the spring is secured to the valve member 20 and the tube communicates with a passage 25 which is formed in the valve member and which is extended so that it communicates with the chamber 23. The other end of the spring is secured to a plug 26 which is in screw thread engagement with the body portion and formed within the plug is a passage 27 which communicates with an inlet 28.
In operation, liquid fuel under pressure applied to the inlet 28 will flow to the chamber 23 and the pressure of fuel will urge the valve member 20 against the action of the spring.
When the valve member is moved from the closed position fuel will flow from the chamber 23 through the orifice 22 to the combustion chamber of the engine and when the fuel pressure falls the spring will urge the valve member to its closed position. The extent of movement of the valve member under the applied fuel pressure is determined by the stop plate 17 and the force exerted by the spring upon the valve member can be adjusted by rotating the plug 26.
In order to secure the nozzle in position within the bore any convenient form of clamping arrangement may be provided and such an arrangement is indicated in dotted outline at 29. Furthermore, in order to prevent escape of combustion gases there is located between the step defined in the bore 13 and the member 16, a washer 30.
In use, it is likely that fuel will seep into the interior of the body portion 15 due to leakage between the valve member and the bore 19. This fuel is allowed to leak away through passages 31 which communicate with the interior of the body portion by way of the clearance between the member 16, the nozzle head18 andthe stop plate 17. The stop plate is also provided with a groove indicated at 32 to ensure that the interior of the body portion is in communication with the aforesaid clearance.
Conveniently the clearance which is defined between the bore 13 and the nozzle communicates with the adjacent air inlet passage 11 of the engine by way of a passage 33 and a seal ring 34 is provided to provide a seal between the body portion and the wall of the bore 13 adjacent the wider end thereof.
By the construction above described there is provided a very slim injection nozzle since it is not necessary to provide a fuel conveying passage in the wall of the body portion 15.
lclaim:
1. A liquid fuel supply nozzle for an internal combustion engine and comprising a nozzle head and a nozzle body to which the head is secured, an orifice formed in the head, a chamber formed in the head and communicating with said orifice, a valve member slidable in the head for controlling the flow of liquid from the chamber through the orifice, resilient means acting to urge the valve member to a position in which the flow of liquid through the orifice is prevented, an inlet for liquid under pressure, a coiled compression spring constituting said resilient means, said coiled compression spring being formed from tube, said tube-forming part of a flow path of liquid from said inlet to said chamber, said liquid under pressure in the chamber acting to move the valve member away from said position against the action of the spring, thereby to permit the flow of liquid through said orifice.
2. A nozzle as claimed in claim 1 including a passage in the valve member, one end of the tube forming the spring being secured to said valve member so that the interior of the tube communicating with said passage and the passage forms part of said flow path.
3. A nozzle as claimed in claim 2 in which said body is hollow, and including means for securing the nozzle head to one end of said body, a plug engaged within the other end of said body, said plug defining said inlet, and the other end of said tube being secured to said plug and passage means through which the interior of the body is in communication with the exterior of the body.
4. A nozzle as claimed in claim 3 in which said means for securing the nozzle head to the body part comprises a retaining member which is in screw-thread engagement with the body part and which defines a lip for engagement with a step on the nozzle head.
i i i i it
Claims (4)
1. A liquid fuel supply nozzle for an internal combustion engine and comprising a nozzle head and a nozzle body to which the head is secured, an orifice formed in the head, a chamber formed in the head and communicating with said orifice, a valve member slidable in the head for controlling the flow of liquid from the chamber through the orifice, resilient means acting to urge the valve member to a position in which the flow of liquid through the orifice is prevented, an inlet for liquid under pressure, a coiled compression spring constituting said resilient means, said coiled compression spring being formed from tube, said tubeforming part of a flow path of liquid from said inlet to said chamber, said liquid under pressure in the chamber acting to move the valve member away from said position against the action of the spring, thereby to permit the flow of liquid through said orifice.
2. A nozzle as claimed in claim 1 including a passage in the valve member, one end of the tube forming the spring being secured to said valve member so that the interior of the tube communicating with said passage and the passage forms part of said flow path.
3. A nozzle as claimed in claim 2 in which said body is hollow, and including means for securing the nozzle head to one end of said body, a plug engaged within the other end of said body, said plug defining said inlet, and the other end of said tube being secured to said plug and passage means through which the interior of the body is in communication with the exterior of the body.
4. A nozzle as claimed in claim 3 in which said means for securing the nozzle head to the body part comprises a retaining member which is in screw-thread engagement with the body part and which defines a lip for engagement with a step on the nozzle head.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB01683/69A GB1300060A (en) | 1969-03-05 | 1969-03-05 | Liquid supply nozzles |
Publications (1)
Publication Number | Publication Date |
---|---|
US3628736A true US3628736A (en) | 1971-12-21 |
Family
ID=9990771
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13518A Expired - Lifetime US3628736A (en) | 1969-03-05 | 1970-02-24 | Liquid supply nozzles |
Country Status (7)
Country | Link |
---|---|
US (1) | US3628736A (en) |
BR (1) | BR7017199D0 (en) |
CA (1) | CA940571A (en) |
DE (1) | DE2009674C3 (en) |
ES (1) | ES377354A1 (en) |
FR (1) | FR2037660A5 (en) |
GB (1) | GB1300060A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3788546A (en) * | 1972-06-26 | 1974-01-29 | Caterpillar Tractor Co | Fuel injection system |
US3791591A (en) * | 1972-06-08 | 1974-02-12 | H Hedges | Fuel injection nozzle assembly |
US5167370A (en) * | 1989-11-15 | 1992-12-01 | Man Nutzfahrzeuge Ag | Method and device for the intermittent injection of fuel into the combustion chamber of a combustion engine |
US5799879A (en) * | 1995-02-13 | 1998-09-01 | Grafotec Kotterer Gmbh | Device for producing a fluid jet |
US7387015B2 (en) * | 2005-09-20 | 2008-06-17 | Conocophillips Company | Material strength indexing system |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19959304A1 (en) * | 1999-12-09 | 2001-06-13 | Bosch Gmbh Robert | Fuel injection valve for internal combustion engines |
DE10048597A1 (en) * | 2000-09-30 | 2002-04-11 | Bosch Gmbh Robert | Fuel injection valve for internal combustion engines |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1218966A (en) * | 1958-03-25 | 1960-05-13 | Motorpal Jihlava Np | Injection nozzle for internal combustion engine injector |
US3188035A (en) * | 1963-03-27 | 1965-06-08 | Bendix Corp | Mechanical tilt coupling |
GB1135795A (en) * | 1965-05-11 | 1968-12-04 | Albert Fletcher Wigley | Spray attachments |
-
1969
- 1969-03-05 GB GB01683/69A patent/GB1300060A/en not_active Expired
-
1970
- 1970-02-19 CA CA075,323A patent/CA940571A/en not_active Expired
- 1970-02-24 US US13518A patent/US3628736A/en not_active Expired - Lifetime
- 1970-02-28 ES ES377354A patent/ES377354A1/en not_active Expired
- 1970-03-02 DE DE2009674A patent/DE2009674C3/en not_active Expired
- 1970-03-04 BR BR217199/70A patent/BR7017199D0/en unknown
- 1970-03-05 FR FR7007882A patent/FR2037660A5/fr not_active Expired
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1218966A (en) * | 1958-03-25 | 1960-05-13 | Motorpal Jihlava Np | Injection nozzle for internal combustion engine injector |
US3188035A (en) * | 1963-03-27 | 1965-06-08 | Bendix Corp | Mechanical tilt coupling |
GB1135795A (en) * | 1965-05-11 | 1968-12-04 | Albert Fletcher Wigley | Spray attachments |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3791591A (en) * | 1972-06-08 | 1974-02-12 | H Hedges | Fuel injection nozzle assembly |
US3788546A (en) * | 1972-06-26 | 1974-01-29 | Caterpillar Tractor Co | Fuel injection system |
US5167370A (en) * | 1989-11-15 | 1992-12-01 | Man Nutzfahrzeuge Ag | Method and device for the intermittent injection of fuel into the combustion chamber of a combustion engine |
US5799879A (en) * | 1995-02-13 | 1998-09-01 | Grafotec Kotterer Gmbh | Device for producing a fluid jet |
US7387015B2 (en) * | 2005-09-20 | 2008-06-17 | Conocophillips Company | Material strength indexing system |
Also Published As
Publication number | Publication date |
---|---|
FR2037660A5 (en) | 1970-12-31 |
DE2009674C3 (en) | 1974-04-25 |
DE2009674B2 (en) | 1973-09-27 |
ES377354A1 (en) | 1973-01-01 |
DE2009674A1 (en) | 1970-09-24 |
BR7017199D0 (en) | 1973-01-11 |
GB1300060A (en) | 1972-12-20 |
CA940571A (en) | 1974-01-22 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US1952816A (en) | Fuel injector | |
US3982693A (en) | Orifice plunger valve fuel injector | |
GB1494435A (en) | Fuel injection valve | |
US5383647A (en) | Gas-injection valve for internal combustion engine | |
DE3268928D1 (en) | An electromagnetically-operable fluid injection system for an internal combustion engine | |
US3669360A (en) | Fuel injection nozzles | |
US3628736A (en) | Liquid supply nozzles | |
US3387790A (en) | Fuel injection nozzle | |
US3718283A (en) | Fuel injection nozzle units | |
GB1183156A (en) | Improvements in or relating to Fuel Injection Valves | |
US3817456A (en) | Fuel injection nozzle for internal combustion engines | |
US3159350A (en) | Fuel injection valve device | |
ES8404014A1 (en) | Fuel injection nozzles | |
JPS6138349B2 (en) | ||
GB1521065A (en) | Fuel injection valve assembly for a reciprocating piston internal-combustion engine | |
GB1289575A (en) | ||
US2407915A (en) | Injection nozzle | |
US3796379A (en) | Fuel injection nozzle units | |
US6053425A (en) | Injector | |
US3528613A (en) | Fuel injector for internal combustion engines | |
US3581999A (en) | Fuel control nozzle,particularly for gas turbine combustion chambers | |
US4153200A (en) | Fuel injection nozzles | |
US3632047A (en) | Fuel injection nozzle valve | |
US4549696A (en) | Fuel injection nozzles | |
US4691864A (en) | Fuel injection nozzles |