DE3233975C1 - Throttle pin nozzle for fuel injection in an internal combustion engine into a secondary combustion chamber which is connected to a main combustion chamber via at least one firing channel - Google Patents
Throttle pin nozzle for fuel injection in an internal combustion engine into a secondary combustion chamber which is connected to a main combustion chamber via at least one firing channelInfo
- Publication number
- DE3233975C1 DE3233975C1 DE19823233975 DE3233975A DE3233975C1 DE 3233975 C1 DE3233975 C1 DE 3233975C1 DE 19823233975 DE19823233975 DE 19823233975 DE 3233975 A DE3233975 A DE 3233975A DE 3233975 C1 DE3233975 C1 DE 3233975C1
- Authority
- DE
- Germany
- Prior art keywords
- nozzle
- combustion chamber
- injection
- throttle
- pin
- 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
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
-
- 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
- F02M57/00—Fuel-injectors combined or associated with other devices
-
- 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
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
Description
Die in F i g. 1 dargestellte Drosselzapfendüse list in einen mit einem Brennerhalsstück versehenen Einsatzkörper 2 eingeschraubt, der einen Nebenbrennraum 3, einen zentralen Schußkanal 4 und von diesem abzweigende Schußkanäle 5 enthält, welche in den Hauptbrennraum 6 der Brennkraftmaschine 7 einmünden. The in F i g. 1 shown throttle pin nozzle list in one with an insert body provided with a torch neck 2 screwed in, the one secondary combustion chamber 3, a central firing channel 4 and branching off from this Contains firing channels 5 which open into the main combustion chamber 6 of the internal combustion engine 7.
Die Drosselzapfendüse 1 setzt sich zusammen aus dem Düsenhalter 8, dem Düsenkörper 9 und der Düsennadel 10, die entgegen der Strömungsrichtung von ihrem Nadelsitz 11 abhebt. Die Düsennadel 10 ragt mit ihrem Zapfen 12 in ein Spritzloch 13, das gemeinsam mit dem Zapfen 12 einen Drosselspalt 14 begrenzt. The throttle pin nozzle 1 consists of the nozzle holder 8, the nozzle body 9 and the nozzle needle 10, which are opposite to the flow direction of their needle seat 11 lifts off. The nozzle needle 10 protrudes with its pin 12 into an injection hole 13, which, together with the pin 12, delimits a throttle gap 14.
Zwischen dem Spritzloch 13 und dem Nadelsitz 11 befindet sich ein Ringraum 15, der durch einen den Nebenbrennraum 3 umgehenden Spülkanal 16 mit dem Hauptbrennraum 6 verbunden ist.Between the injection hole 13 and the needle seat 11 is a Annular space 15, which by a bypassing the secondary combustion chamber 3 scavenging duct 16 with the Main combustion chamber 6 is connected.
Parallel zur Düsennadel 10 ist im Düsenkörper 9 ein Spülventil 17 angeordnet, das eine längsverschiebbare Ventilnadel aufweist. Die Ventilnadel wird durch eine Ventilfeder 18 auf ihren Ventilsitz 19 gedrückt und verschließt somit den in dem Düsenkörper 9 liegenden Kanalteil 16a des Spülkanals 16. Die Ventilnadel wird mit einem kolbenartigen Schaft 26 in einer Bohrung 21 im Düsenkörper 9 geführt. In derselben Bohrung kann rückseitig ein bolzenartig ausgebildetes und mit einer Durchgangsbohrung 22 versehenes Hubbegrenzungsstück 20 angeordnet sein, an dem sich die gleichfalls in der Bohrung 21 angeordnete Ventilfeder 18 abstützt. A flushing valve 17 is located in the nozzle body 9 parallel to the nozzle needle 10 arranged, which has a longitudinally displaceable valve needle. The valve needle will pressed by a valve spring 18 onto its valve seat 19 and thus closes the channel part 16a of the flushing channel 16 located in the nozzle body 9. The valve needle is guided with a piston-like shaft 26 in a bore 21 in the nozzle body 9. In the same bore, a bolt-like design and with a Be arranged through hole 22 provided stroke limiting piece 20, on which the valve spring 18, which is also arranged in the bore 21, is supported.
Die Bohrung 22 im Hubbegrenzungsstück 20 steht an ihrem der Ventilfeder 18 abgewandten Ende über einen Ringkanal 23 mit einem zur Düsennadel 10 führenden Kraftstoffzuführkanal 24 in Verbindung.The bore 22 in the stroke limiter 20 is at the valve spring 18 facing away from the end via an annular channel 23 with a leading to the nozzle needle 10 Fuel supply channel 24 in connection.
In den Einsatzkörper 2 ist oberhalb des Nebenbrennraums 3 ein Dichtelement 25 eingelegt, an dem sich die eingeschraubte Drosselzapfendüse 1 über ihren Düsenkörper 9 abstützt. A sealing element is located in the insert body 2 above the secondary combustion chamber 3 25 inserted, on which the screwed-in throttle pin nozzle 1 is above its nozzle body 9 supports.
In F i g. 2 ist stark vergrößert lediglich der untere Teil einer Drosselzapfendüse gezeigt, deren Zapfen 12' ein zusätzliches Spritzloch aufweist, das aus einer zentralen Bohrung 27 und einer den Zapfen durchsetzenden Querbohrung 28 besteht, welche in den Ringraum 15 mündet. In Fig. 2 is greatly enlarged, only the lower part of a Throttle pin nozzle shown, the pin 12 'has an additional spray hole, that from a central Bore 27 and a transverse bore penetrating the pin 28, which opens into the annular space 15.
Die Selbstreinigung der Drosselzapfendüse 1 geschieht wie folgt: Zu Beginn eines Einspritzvorganges bewirkt der von einer nicht dargestellten Einspritzpumpe unter hohem Druck zugeführte Dieselkraftstoff eine Öffnungsbewegung der federbelasteten Düsennadel 10 in den Düsenkörper 9 hinein. Gleichzeitig wirkt der hohe Druck auch auf den kolbenartigen Schaft 26 der Ventilnadel des Spülventils 17, das dadurch in Schließlage gehalten wird und somit den Spülkanal 16 verschließt. The self-cleaning of the throttle pin nozzle 1 takes place as follows: At the beginning of an injection process, it is effected by an injection pump (not shown) Diesel fuel supplied under high pressure causes an opening movement of the spring-loaded Nozzle needle 10 into nozzle body 9. At the same time, the high pressure is also effective on the piston-like shaft 26 of the valve needle of the flushing valve 17, which thereby is held in the closed position and thus closes the flushing channel 16.
Bei Förderende (durch die Einspritzpumpe bestimmt) sinkt der Druck im Kraftstoffzuführkanal sofort ab. Die Düsennadel 10 gelangt durch Federkraft wieder in Schließlage, während nunmehr durch den gegenüber dem Hauptbrennraum höheren Nebenbrennraumdruck infolge der im Nebenbrennraum einsetzenden Verbrennung Gasmengen aus diesem durch den Drosselspalt 14 strömen und das Spülventil 17 gegen die Ventilfeder 18 öffnen. Sobald die Verbrennung im Hauptbrennraum einsetzt, strömen Gasmengen aufgrund des nunmehr höheren Druckes im Hauptbrennraum in umgekehrter Richtung zunächst durch den Spülkanal 16 und dann durch den Drosselspalt 14 bis zum nächsten Einspritzvorgang. At the end of delivery (determined by the injection pump) the pressure drops in the fuel supply channel immediately. The nozzle needle 10 comes back by spring force in the closed position, while now due to the secondary combustion chamber pressure, which is higher than that of the main combustion chamber as a result of the onset of combustion in the secondary combustion chamber, amounts of gas flow out of this flow through the throttle gap 14 and open the flushing valve 17 against the valve spring 18. As soon as combustion begins in the main combustion chamber, quantities of gas flow due to the now higher pressure in the main combustion chamber in the opposite direction initially the flushing channel 16 and then through the throttle gap 14 to the next injection process.
Durch die Pulsation von Gasteilen wird ein hoher Reinigungseffekt erzielt, der die Bildung von Verkokungsrückständen sowie das Festsetzen von der Einspritzpumpe mitgeschleppten Verunreinigungen vermeidet. The pulsation of gas parts creates a high cleaning effect achieved, the formation of coking residues as well as the settling of the Injection pump avoids dragged-in impurities.
Somit bleibt auch bei Verwendung eines zusätzlichen Spritzlochs im Nadelzapfen dieses frei von Verkokungsrückständen und sonstigen Verunreinigungen, z.B. This means that even if an additional spray hole is used, the Needle pin this free of coking residues and other impurities, e.g.
mitgeschleppten Spänen.entrained shavings.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19823233975 DE3233975C1 (en) | 1982-09-14 | 1982-09-14 | Throttle pin nozzle for fuel injection in an internal combustion engine into a secondary combustion chamber which is connected to a main combustion chamber via at least one firing channel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19823233975 DE3233975C1 (en) | 1982-09-14 | 1982-09-14 | Throttle pin nozzle for fuel injection in an internal combustion engine into a secondary combustion chamber which is connected to a main combustion chamber via at least one firing channel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE3233975C1 true DE3233975C1 (en) | 1983-12-22 |
Family
ID=6173131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19823233975 Expired DE3233975C1 (en) | 1982-09-14 | 1982-09-14 | Throttle pin nozzle for fuel injection in an internal combustion engine into a secondary combustion chamber which is connected to a main combustion chamber via at least one firing channel |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE3233975C1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN120990774A (en) * | 2025-10-27 | 2025-11-21 | 烟台福尔精密机械有限公司 | A control device and control method for a hydrogen fuel internal combustion engine injection system. |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE671686C (en) * | 1936-11-08 | 1939-02-11 | Humboldt Deutzmotoren Akt Ges | Spigot nozzle for internal combustion engines |
| DE927183C (en) * | 1942-02-10 | 1955-05-02 | Daimler Benz Ag | Pre-chamber injection internal combustion engine |
| DE2921455A1 (en) * | 1979-05-26 | 1980-11-27 | Daimler Benz Ag | FUEL INJECTION VALVE FOR AIR COMPRESSING INJECTION COMBUSTION ENGINES |
| DE2939280A1 (en) * | 1979-09-28 | 1981-04-16 | Robert Bosch Gmbh, 7000 Stuttgart | Fuel injection nozzle for diesel engine - has thin sleeve projecting into cylinder to prevent coking of injection nozzle by different thermal expansion |
-
1982
- 1982-09-14 DE DE19823233975 patent/DE3233975C1/en not_active Expired
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE671686C (en) * | 1936-11-08 | 1939-02-11 | Humboldt Deutzmotoren Akt Ges | Spigot nozzle for internal combustion engines |
| DE927183C (en) * | 1942-02-10 | 1955-05-02 | Daimler Benz Ag | Pre-chamber injection internal combustion engine |
| DE2921455A1 (en) * | 1979-05-26 | 1980-11-27 | Daimler Benz Ag | FUEL INJECTION VALVE FOR AIR COMPRESSING INJECTION COMBUSTION ENGINES |
| DE2939280A1 (en) * | 1979-09-28 | 1981-04-16 | Robert Bosch Gmbh, 7000 Stuttgart | Fuel injection nozzle for diesel engine - has thin sleeve projecting into cylinder to prevent coking of injection nozzle by different thermal expansion |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN120990774A (en) * | 2025-10-27 | 2025-11-21 | 烟台福尔精密机械有限公司 | A control device and control method for a hydrogen fuel internal combustion engine injection system. |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8100 | Publication of the examined application without publication of unexamined application | ||
| D1 | Grant (no unexamined application published) patent law 81 | ||
| 8364 | No opposition during term of opposition | ||
| 8330 | Complete disclaimer |