GB2530767A - Fuel injector nozzle - Google Patents
Fuel injector nozzle Download PDFInfo
- Publication number
- GB2530767A GB2530767A GB1417349.6A GB201417349A GB2530767A GB 2530767 A GB2530767 A GB 2530767A GB 201417349 A GB201417349 A GB 201417349A GB 2530767 A GB2530767 A GB 2530767A
- Authority
- GB
- United Kingdom
- Prior art keywords
- nozzle
- spray holes
- valve member
- needle valve
- 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.)
- Withdrawn
Links
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
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
- F02M61/1893—Details of valve member ends not covered by groups F02M61/1866 - F02M61/188
-
- 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
- F02M61/06—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 the valves being furnished at seated ends with pintle or plug shaped extensions
-
- 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
- F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
- F02M61/1806—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for characterised by the arrangement of discharge orifices, e.g. orientation or size
- F02M61/182—Discharge orifices being situated in different transversal planes with respect to valve member direction of movement
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
A fuel injector nozzle 102 comprises a needle 106 having an extension 116 in a reduced cross-section part 120 of the nozzle body 104. When the needle 106 is in a closed position, fig.4, an edge seal 140 prevents fuel from flowing into a sac 130, and a secondary seal 142 formed between a needle extension 116 and a nozzle bore 124 prevents fuel from being ejected from the sac 130. The nozzle may have two sets of spray holes 132, 134 such that when the needle 106 is in a partially open position (fig.5), the secondary seal 142 is partially open allowing fuel to flow into the sac 130 via a needle bore 128 and vents 126 and into only the first row of spray holes 132, the second set of spray holes 132 being obstructed by the needle extension 116. When the needle is fully open (fig.6), neither set of spray holes 132, 134 are obstructed and fuel is ejected from both sets of spray holes.
Description
Fuel Injector Nozzle
TECHNICAL FIELD
The present invention relates to a fuel injector for an internal combustion engine and more particularly to the nozzle of a diesel fuel injector.
BACKGROTJI'Th OF THE INVENTION A known fuel injector nozzle 2, as illustrated in Figures 1 and the detailed view of Figure 2, comprises a nozzle body 4 and a needle valve member 6, which co-operate as a valve to control fuel injection events through at least one orifice, or spray hole 32, into a combustion chamber (not shown). Co-operating fmstoconical surfaces provided in a bore 8 of the nozzle body 4 in which the needle valve member 6 is slidable, and on the needle valve member 6, form an edge seal 40 when in contact, thereby preventing fuel from flowing from a gallery void 46, into the spray holes 32. Any volume of fuel trapped below (in the orientation of the figures) the edge seal 40 is known as dead volume. The dead volume, indicated generally at 50 in Figures 1 and 2, is uncontrolled and can potentially leak into the combustion chamber, thereby resulting in poor mixing of the uncontrolled fuel and increasing undesired emissions.
Fuel injectors may have variable orifice thnctionality, i.e. may be provided with different orifices injecting fuel at different times, thereby providing improved control and atomisation of fuel, In a variable orifice fuel injector, two edge seals are typically provided. In a known example of a variable orifice injector, two rows of spray holes are provided; a first row of smaller spray holes, and a second row of larger spray holes, In a first injection event, such as a pilot, a small quantity of fuel is ejected through the first row of spray holes, whilst spray holes of the second row remain sealed, In a main injection event, ftiel is ejected through the row of larger spray holes, or through both rows of spray holes.
A known problem in variable orifice injectors having two edge seals is seat wear. One of the edge seal diameters (i.e. seat diameters) is often very small, due to space limitations within the nozzle body. Small diameter seats result in high impact stresses and high wear rates, leading to performance drift over time.
Furthermore, if the positions of the seats are related to one another, a difference in wear rate between the seats may occur over time, resulting in leakage.
A frirther problem which may occur in known fuel injector embodiments is undesirable movement of the needle within the nozzle body. On initiation of an injection event, i.e. when the needle lifts from the nozzle body, the needle is guided by a guide clearance between the bore and the needle, at a point remote from the spray holes. It is therefore possible that the needle will move off-centre, by an amount proportional to the distance of the guide clearance from the spray holes, Movement of the needle to an off-centre position causes an uneven pressure distribution within the nozzle, thereby resulting in an uneven spray, which has an adverse effect on emissions.
SUMMARY OF THE INVENTION
It is an object of the present invention to provide an improved fuel injector which at least mitigates the above mentioned problems.
Accordingly the present invention provides, in a first aspect, a fuel injector nozzle comprising a nozzle body and a needle valve member slidable within a bore of the nozzle body; wherein the needle valve member is movable, between a closed position and an fully open position, towards and away from a seating provided within the bore of the nozzle body; wherein the needle valve member comprises an extension section which is at least partially contained within a reduced cross-sectional area section of the nozzle body bore defined by an internal wall of the nozzle body; wherein a first seal in the form of an edge seal is provided by abutment between a section of the needle valve member and the seating provided in the nozzle body, and a secondary seal is provided between the extension section of the needle valve member, and the internal wall of the reduced cross-sectional area section of the nozzle body; and wherein, when the needle valve body is in the closed position, the edge seal prevents fuel from flowing from a gallery void, into a nozzle sac defined within the reduced cross-sectional area section of the nozzle body bore, and the second edge seal prevents fuel from being ejected from the nozzle sac, via at least one spray hole; and wherein, when the needle is in the fully open position, the edge seal and the secondary seal are open, thereby allowing ejection of fuel through the spray holes to an outside of the nozzle.
Preferably, the at least one spray holes comprises a first set of spray holes comprises at least one spray hole, and a second set of spray holes comprising at least one spray hole the second set of spray holes being located closer to the edge seal than the first set of spray holes; wherein, when the needle valve member is in a partially open position between the closed position and the fully open position, the extension section of the needle obstructs the second set of spray holes and does not obstruct the first set of spray holes, such that fuel is ejected from the sac via the first set of spray holes, whilst the secondary seal prevents fuel from being ejected through the second set of seals.
The extension section may comprise a needle bore and at least one vent, wherein, when the needle valve member is in the fully open position, fuel flows from the gallery void to the nozzle sac via the vents and the needle bore.
The combined cross-sectional area of the at least one vent may be approximately three times greater than a total cross-sectional area of an exit of the spray holes from the nozzle sac.
The present invention also comprises, in a further aspect, a fuel injector comprising a nozzle as described above.
BRIEF DESCRIPTION OF THE DRAWINGS
The present invention is now described by way of example with reference to the accompanying drawings in which: Figure 3 is view of the tip of a nozzle in accordance with the present invention in a closed condition, with the nozzle body in cross-section; Figure 4 is a view of the nozzle tip of Figure 3 with both the nozzle body and needle in cross-section; Figure 5 is a cross-sectional view of the nozzle tip of Figure 3 at a partially-open position; and Figure 6 is a cross-sectional view of the nozzle tip of Figure 3 in a fully-open position.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
In the description below, "above" and "below" are only in relation to the orientation of the figures, and are not intended to be limiting.
Referring to Figures 3 to 6, a fuel injector nozzle 102 (only part of which is illustrated in the Figures) in accordance with the present invention comprises a nozzle body 104 and a needle valve member 106, contained and slidable within a bore 108 of the nozzle body 104. The needle valve member 106 is constrained in a radial direction by a guide section of the bore 108 (not shown), and is movable along a longitudinal axis A of the nozzle 102, towards and away from a seating comprising an annular frustoconical surface 110 provided within the bore 108 of the nozzle body i04, The needle valve member 106 comprises a main section 112 and an extension comprising a piston section 116, provided at an end of the needle valve member 106 and of smaller cross-sectional area than the main section 112. The S main section 112 and the piston section 116 are separated by a frustoconical section 114, comprising an annular fmstoconical surface 115 (indicated on Figures 5 and 6).
The needle valve member 106 is arranged in the nozzle body 104 such that the piston section 116 extends into a reduced cross sectional area section, i.e. a reduced diameter section 120 provided at an end 122 of the bore 108 of the nozzle body 104 below the frustoconical surface 110. The reduced diameter section 120 of the bore 108 is defined by an annular wall 124.
The piston section 116 is provided with a plurality of needle vents 126, surrounding an internal needle bore 128.
In the present embodiment, two sets of spray holes are provided, through the annularwall 124 defining the reduced diameter section 120 of the nozzle body 104. The spray holes provide a fluid pathway from a nozzle sac 130 located within the reduced diameter section 120 of the bore 108 of the nozzle body 104, thereby allowing ejection of fuel from the sac 130 to a combustion chamber (not shown). The spray holes comprise a first, lower set of spray holes 132, and a second, upper set of spray holes 134 positioned closer to the frustoconical surface 110 of the nozzle body bore 108, than the first set of spray holes 132. In the present embodiment, each of the second set of spray holes 134 is of a larger cross-sectional area than each of the first set of spray holes 132.
In the closed position of Figures 3 and 4, the needle valve member 106 is in a lowennost position relative to the nozzle body 104. In this position, a first seal, in the form of an edge seal 140, is formed by abutment of the frustoconical section 114 of the needle valve member 106, with the frustoconical surface 110 of the nozzle body bore 108.
A clearance between the piston section 116 of the needle valve member 106, and the annular wall 124 of the reduced diameter section 120 of the nozzle body bore 108, is sufficiently small so that a secondary seal 142 (indicated on S Figures 3, 4 and 5) is formed downstream of the edge seal NO, between the piston section 116 and the annular wall 124.
In the closed position, the volume below the edge seal 140 is filled with low pressure which has remained in this volume after the last injection event. The edge seal 140 prevents further fuel from entering the volume below the edge seal NO from a gallery void 146 located around the needle valve member 106 above the edge seal 140, and the secondary seal 142 prevents fuel from entering the spray holes 132, 134, i.e. the piston section 116 seals the low pressure fuel within the volume below the edge seal 140 from entering the spray holes 132, 134.
Ejection of fuel through both the first set of spray holes 132 and the second set of spray holes 134 is prevented when the nozzle 102 is in the closed position.
An ejection event is initiated by moving the needle valve member 106 upwardly within the nozzle body 104 along the longitudinal axis A of the nozzle 102, such that the fmstoconical section 114 of the needle valve member 106 begins to move away from the frustoconical surface 110 of the nozzle body bore 108, thereby opening the edge seal 140, and allowing a flow of fuel into the needle bore 128 (indicated on Figures 4 to 6), via the needle vents 126. Figure 5 illustrates the nozzle 102 part way through this movement, wherein the nozzle 102 is in a partially open position, i.e. the nozzle 102 is at a part-lift condition.
Fuel flowing into the needle bore 128 via the needle vents 126 subsequently enters the sac 130, and is then ejected from the sac 130 via the first row of spray holes 132, into the combustion chamber. At this partially-open position, the secondary seal 142 is also partially open. Although fuel can flow from the sac 130 into the first row of spray holes 132, the piston section 116 seals the second row of spray holes 134, such that fuel is prevented from being ejected through the second row of spray holes 134.
Movement of the needle valve member 106 upwardly within the nozzle body 104 continues until the nozzle 02 is in a fully open position, i.e. a full-lift position, as illustrated in Figure 6. In the frilly open position, the needle valve member 106 has been lifted flatly away from the frustoconical seat 110 of the nozzle body 104.
In the fully open position, the piston section 116 has been moved upwardly sufficiently so as to no longer obstruct the second, upper set of spray holes 134, i.e. the secondary seal 142 has been fully opened. Fuel therefore also now flows from the sac 130, through the second set of spray holes L34 in addition to the first set of spray holes 132, and into the combustion chamber.
As can be seen from Figure 6, even in the fully open position, the piston section 116 of the needle valve member 106 still partly projects into the reduced diameter section 120 of the nozzle body bore 108.
The present invention therefore enables a variable orifice function, by enabling a first, edge seal 140, and a secondary seal 142, which are opened in turn to allow ejection of friel through the first set of spray holes 132 and subsequently additionally through the second set of spray holes 134.
As discussed above, the clearance between the piston section 116 and the annular wall 124 of the reduced diameter section 120 of the nozzle body bore 108 is sufficiently small so as to form the secondary seal 142 between the piston section 116 and the wall 124. However, in the closed position, only low pressure fuel is sealed in the volume below the edge seal 140, Although the secondary seal N2 seals against high pressure fuel during the partially open position of Figure 5, dilation of the piston section 116 due to internal pressure of fuel within the needle bore 128 causes a reduction in the clearance between the piston section 116 and the wall 124 defining the reduced diameter section 120 of the nozzle body bore 108. Accordingly, there is a degree of flexibility in the clearance required. A fine turn finish may be sufficient to form the secondary seal 142.
The dimensions of the vents 126 and of the needle bore 128 are selected to be sufficiently large so as to prevent significant pressure loss as fuel passes through the vents 126 and into the needle bore 128. For example, the combined cross-sectional area of the vents U6 and the needle bore 128 could be three times the total cross-sectional area of the exits 132a, 134a to the spray holes 132, 134, i.e. wherein the spray holes 132, 134 open onto the annular wall 124 defining the reduced diameter section 120 of the nozzle body bore 108.
By extending the needle valve member 106 with a piston section 116 which creates a secondary seal N2, downstream of the edge seal 140 and directly covering the spray holes 132, 134, dead volume is effectively eliminated by the present invention. Emissions are therefore significantly reduced in the present
invention compared to prior art embodiments.
Furthermore, the present invention provides an improved guidance of the needle valve member 106 compared to prior art embodiments, as the piston section 116 of the needle valve member 106 is guided within the reduced diameter section 120 of the nozzle body bore 108 by the clearance between the piston section 116 and the wall 124. It is therefore only possible for the needle valve member 106 to be off-centre by a very small degree, as influenced by the clearance between the piston section 116 and the wall 124.
REFERENCE S
Prior art
fuel injector nozzle 2 nozzle body 4 needle valve member 6 spray holes 32 nozzle body bore 8 edge seal 40 gallery void 46 dead volume 50 Invention nozzle 102 nozzle body 104 needle valve member 106 nozzle body bore 108 bore frustoconical surface (seating) 110 needle valve member main section 112 needle valve member frustoconical section 114 fmstoconical surface (defining frustoconical section) 115 needle valve member extension / piston section 116 bore reduced diameter section 120 end of the bore of the nozzle body (below frustoconical surface) 122 (reduced diameter section) annular wall 124 needle vents 126 needle bore 128 nozzle sac 130 first, lower set of spray holes 132 second, upper set of spray holes 134 spray holes entrances 132a, 134a first (edge) seal 140 second seal 142 gallery void 146 nozzle longitudinal axis A
Claims (4)
- CLAIMSL A fuel injector nozzle (102) comprising a nozzle body (04) and a needle valve member (106) slidable within a bore (108) of the nozzle body (104); wherein the needle valve member (106) is movable, between a closed position and an fully open position, towards and away from a seating (110) provided within the bore (108) of the nozzle body (104); wherein the needle valve member (106) comprises an extension section (116) which is at least partially contained within a reduced cross-sectional area section (120) of the nozzle body bore (108) defined by an internal wall (124) of the nozzle body (104); wherein a first seal (140) in the form of an edge seal (140) is provided by abutment between a section (114) of the needle valve member (06) and the seating (110) provided in the nozzle body (104), and a secondary seal (142) is provided between the extension section (116) of the needle valve member (106), and the internal wall (124) of the reduced cross-sectional area section (120) of the nozzle body (104); and wherein, when the needle valve member (106) is in the closed position, the edge seal (140) prevents fuel from flowing from a gallery void (146), into a nozzle sac (130) defined within the reduced cross-sectional area section (120) of the nozzle body bore (108), and the secondary seal (142) prevents fuel from being ejected from the nozzle sac (130), via at least one spray hole (132, 134); and wherein, when the needle valve member (106) is in the fully open position, the edge seal (140) and the secondary seal (142) are open, thereby allowing ejection of fuel through the spray holes (132, 164) to an outside of the nozzle (102).
- 2. A nozzle (102) as claimed in claim 1 wherein the at least one spray holes (132, 134) comprises a first set of spray holes (132) comprising at least one spray hole, and a second set of spray holes (134) comprising at least one spray hole; the second set of spray holes (134) being located closer to the edge seal (140) than the first set of spray holes (132); wherein, when the needle valve member (106) is in a partially open position between the closed position and the fully open position, the extension section (116) of the needle valve member (106) obstructs the second set of spray holes (134) and does not obstruct the first set of spray holes (134), such that fuel is ejected from the sac (130) via the first set of spray holes (132), whilst the secondary seal (142) prevents fuel from being ejected through the second set of spray holes (134).
- 3, A nozzle (102) as claimed in claim 1 or claim 2 wherein the extension section (16) comprises a needle bore (128) and at least one vent (126), and wherein, when the needle valve member (106) is in the frilly open position, fuel flows from the gallery void (146) to the nozzle sac (130) via the vents (126) and the needle bore (128).
- 4. A nozzle (102) as claimed in claim 3 wherein the combined cross-sectional area of the at least one vent (126) is approximately three times greater than a total cross-sectional area of an exit (132a, t34a) of the spray holes (132, t34) from the nozzle sac (130).5, A fuel injector comprising a nozzle (102) as claimed in any one of the preceding claims.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1417349.6A GB2530767A (en) | 2014-10-01 | 2014-10-01 | Fuel injector nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1417349.6A GB2530767A (en) | 2014-10-01 | 2014-10-01 | Fuel injector nozzle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB201417349D0 GB201417349D0 (en) | 2014-11-12 |
| GB2530767A true GB2530767A (en) | 2016-04-06 |
Family
ID=51901450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1417349.6A Withdrawn GB2530767A (en) | 2014-10-01 | 2014-10-01 | Fuel injector nozzle |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2530767A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109555626A (en) * | 2017-09-25 | 2019-04-02 | 曼恩能源方案有限公司 | Injection nozzle and dual fuel engine for dual fuel engine |
| US10563632B2 (en) | 2017-12-05 | 2020-02-18 | Caterpillar Inc. | Fuel injector |
| WO2021035029A1 (en) * | 2019-08-22 | 2021-02-25 | Cummins Inc. | Ducted combustion shield |
| WO2023073140A1 (en) * | 2021-10-29 | 2023-05-04 | Ganser Crs Ag | Fuel injection valve for internal combustion engines |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1578097A (en) * | 1977-06-10 | 1980-10-29 | Bosch Gmbh Robert | Fuel injection nozzle |
| US4238075A (en) * | 1978-01-28 | 1980-12-09 | Audi Nsu Auto Union Aktiengesellschaft | Fuel injection jet for injection combustion engines |
| GB1587345A (en) * | 1977-03-18 | 1981-04-01 | Bosch Gmbh Robert | Fuel injection nozzle for internal combustion engines |
| JPH07332199A (en) * | 1994-06-01 | 1995-12-22 | Nippon Clean Engine Lab Co Ltd | Double opening and closing multi-hole nozzle injection valve, compression ignition engine using it and ignition method therefor |
| JPH09195892A (en) * | 1996-01-17 | 1997-07-29 | Denso Corp | Fuel injection nozzle |
| GB2319062A (en) * | 1996-11-07 | 1998-05-13 | Bosch Gmbh Robert | Fuel-injection valve for internal combustion engines |
| EP1063416A2 (en) * | 1999-06-25 | 2000-12-27 | Delphi Technologies, Inc. | Fuel injector |
| US6540161B1 (en) * | 1999-09-30 | 2003-04-01 | Robert Bosch Gmbh | Fuel injection valve for internal combustion engines |
| DE102012211169A1 (en) * | 2012-06-28 | 2014-01-23 | Robert Bosch Gmbh | Fuel injector for injecting fuel to chamber of combustion engine, has injection port that is hydraulically connected with high pressure space via through-hole, such that pressure chamber is fuel-supplied by lifting nozzle needle |
-
2014
- 2014-10-01 GB GB1417349.6A patent/GB2530767A/en not_active Withdrawn
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1587345A (en) * | 1977-03-18 | 1981-04-01 | Bosch Gmbh Robert | Fuel injection nozzle for internal combustion engines |
| GB1578097A (en) * | 1977-06-10 | 1980-10-29 | Bosch Gmbh Robert | Fuel injection nozzle |
| US4238075A (en) * | 1978-01-28 | 1980-12-09 | Audi Nsu Auto Union Aktiengesellschaft | Fuel injection jet for injection combustion engines |
| JPH07332199A (en) * | 1994-06-01 | 1995-12-22 | Nippon Clean Engine Lab Co Ltd | Double opening and closing multi-hole nozzle injection valve, compression ignition engine using it and ignition method therefor |
| JPH09195892A (en) * | 1996-01-17 | 1997-07-29 | Denso Corp | Fuel injection nozzle |
| GB2319062A (en) * | 1996-11-07 | 1998-05-13 | Bosch Gmbh Robert | Fuel-injection valve for internal combustion engines |
| EP1063416A2 (en) * | 1999-06-25 | 2000-12-27 | Delphi Technologies, Inc. | Fuel injector |
| US6540161B1 (en) * | 1999-09-30 | 2003-04-01 | Robert Bosch Gmbh | Fuel injection valve for internal combustion engines |
| DE102012211169A1 (en) * | 2012-06-28 | 2014-01-23 | Robert Bosch Gmbh | Fuel injector for injecting fuel to chamber of combustion engine, has injection port that is hydraulically connected with high pressure space via through-hole, such that pressure chamber is fuel-supplied by lifting nozzle needle |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109555626A (en) * | 2017-09-25 | 2019-04-02 | 曼恩能源方案有限公司 | Injection nozzle and dual fuel engine for dual fuel engine |
| KR20190035530A (en) * | 2017-09-25 | 2019-04-03 | 만 에너지 솔루션즈 에스이 | Injection nozzle for a dual fuel engine and dual fuel engine |
| CN109555626B (en) * | 2017-09-25 | 2023-04-14 | 曼恩能源方案有限公司 | Injection nozzle for a dual-fuel engine and dual-fuel engine |
| KR102638105B1 (en) | 2017-09-25 | 2024-02-16 | 만 에너지 솔루션즈 에스이 | Injection nozzle for a dual fuel engine and dual fuel engine |
| US10563632B2 (en) | 2017-12-05 | 2020-02-18 | Caterpillar Inc. | Fuel injector |
| WO2021035029A1 (en) * | 2019-08-22 | 2021-02-25 | Cummins Inc. | Ducted combustion shield |
| WO2023073140A1 (en) * | 2021-10-29 | 2023-05-04 | Ganser Crs Ag | Fuel injection valve for internal combustion engines |
Also Published As
| Publication number | Publication date |
|---|---|
| GB201417349D0 (en) | 2014-11-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |