CS259256B1 - Injection nozzle - Google Patents
Injection nozzle Download PDFInfo
- Publication number
- CS259256B1 CS259256B1 CS864047A CS404786A CS259256B1 CS 259256 B1 CS259256 B1 CS 259256B1 CS 864047 A CS864047 A CS 864047A CS 404786 A CS404786 A CS 404786A CS 259256 B1 CS259256 B1 CS 259256B1
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- CS
- Czechoslovakia
- Prior art keywords
- holder
- bellows
- needle
- injection nozzle
- closing mechanism
- Prior art date
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- Fuel-Injection Apparatus (AREA)
Abstract
Vstriekovacia dýza pozostáva z telesa, v ktorom sú vytvořené přívodně a odtokové kanaly paliva a uložený uzatvárací mechanizmus. Uzatvárací mechanizmus je tvořený vlnovcom nasunutým na tlačnom čapě uloženom v držiaku, na ktorom je vlnovec jedným koncom upevněný a druhý konec vlnovca je upravený pod těsněním mezdi držiakom a přítlačnou maticou. Jeden koniec ihly dosedá do sedla a druhý koniec ihly je nalisovaný do tlačného čapu, ktorý je opretý o pružinu uloženu v držiaku.The injection nozzle consists of a body in which the fuel inlet and outlet channels are formed and the closing mechanism is mounted. The closing mechanism is formed by a bellows fitted on a push pin mounted in a holder, on which the bellows is fixed at one end and the other end of the bellows is arranged under a seal between the holder and the pressure nut. One end of the needle rests in the seat and the other end of the needle is pressed into the push pin, which is supported by a spring mounted in the holder.
Description
Vstriekovacia dýza pozostáva z telesa, v ktorom sú vytvořené přívodně a odtokové kanaly paliva a uložený uzatvárací mechanizmus. Uzatvárací mechanizmus je tvořený vlnovcom nasunutým na tlačnom čapě uloženom v držiaku, na ktorom je vlnovec jedným koncom upevněný a druhý konec vlnovca je upravený pod těsněním mezdi držiakom a přítlačnou maticou. Jeden koniec ihly dosedá do sedla a druhý koniec ihly je nalisovaný do tlačného čapu, ktorý je opretý o pružinu uloženu v držiaku.The injection nozzle consists of a body in which fuel inlet and outlet channels are formed and a closing mechanism is provided. The closing mechanism is formed by a bellows slid on a thrust pin mounted in the holder, on which the bellows is fixed at one end and the other end of the bellows is provided under the intermediate seal by the holder and the pressure nut. One end of the needle abuts against the seat and the other end of the needle is pressed into a thrust pin which is supported by a spring mounted in the holder.
Vynález rieši vstriekovaciu dýzu vhodná pre vstriekovanle paliva bez mazacích vlastností do spalovacieho priestoru motora, čo umožní upravit zážihový motor na motor vznětový. Dýza bude zaskrutkovaná do otvoru pre zapalovaciu sviečku.The invention provides an injection nozzle suitable for injecting fuel without lubricating properties into the combustion chamber of the engine, which makes it possible to convert the spark-ignition engine to a diesel engine. The nozzle will be screwed into the spark plug hole.
Známe vstriekovacie dýzy sú riešené tak, že ihla, ktorá uzatvára výtokový kanál má na druhom konci presne brúsený a lapovaný piest, ktorý sa axiálně pohybuje v lapovanom válci. Lapovaný piest netesní úplné, preto časť paliva prenikne nad piest, ktoré je potom odvádzané odpadným potrubím zpáť do nádrže. Piest a válec sú lepované tak, že sú nezaměnitelné. Keď sa poškodí piest je nutné vyřadit piest aj válec. Na vstriekovanie benzínu, liehu a vody sa nedajú použit. Zdvih ihly bývá 0,2 mm. Používáním sa netěsnost dýzy zvyšuje nie rovnako n každéj dýzy, čo potom zapříčiňuje nerovnoměrný chod motora.The known injection nozzles are designed in such a way that the needle which closes the outflow channel has at the other end a precisely ground and lapped piston which moves axially in the lapped cylinder. The trapped piston does not leak completely, so part of the fuel penetrates above the piston, which is then discharged through the drain line back into the tank. The piston and cylinder are glued so that they are unmistakable. If the piston is damaged, both the piston and the cylinder must be discarded. They cannot be used to inject gasoline, alcohol and water. The needle stroke is 0.2 mm. By using, the leakage of the nozzle increases not equal to each nozzle, which then causes uneven operation of the motor.
Uvedené nedostatky odstraňuje vstriekovacia dýza pozostávajúca z telesa, v ktorom sú vytvořené přívodně a odtokové kanály paliva a uložený uzatvárací mechanizmus podta vynálezu, ktorého podstata spočívá v tom, že uzatvárací mechanizmus je tvořený vlnovcom nasunutým na tlačnom čapě a druhý koniec vlnovca je upravený pod těsněním medzi telesom a přítlačnou maticou. Jeden koniec ihly dosedá do sedla a druhý koniec ihly je spojený s tlačným čapom, ktorý sa opiera o pružinu uloženú v držiaku.These drawbacks are eliminated by an injection nozzle consisting of a body in which fuel inlet and outlet channels and a closing mechanism according to the invention are provided, the principle being that the closing mechanism is formed by a bellows slid on the thrust pin and the other end of the bellows being provided under body and pressure nut. One end of the needle abuts against the seat and the other end of the needle is connected to a thrust pin which is supported by a spring mounted in the holder.
Výhody vstriekovacej dýzy podta vynálezu sú v tom, že nevyžaduje mazanie a dokonale těsní. Preto nie je potřebné ani odpadně potrubie, čím sa znižuje jej hmotnost, znižujú sa náklady na jej výrobu.The advantages of the injection nozzle of the invention are that it does not require lubrication and seals perfectly. Therefore, no waste piping is required, thereby reducing its weight and reducing its production costs.
Příklad prevedenia dýzy je znázorněný na obrázku v pozdlžnom řeze.An example of a nozzle design is shown in longitudinal section of the figure.
Vstriekovacia dýza pozostáva z telesa 2 ihly 3, ktorá dosedá do sedla 5 a zabraňuje vytekaniu paliva cez výtokový kanál 6, ktorý može byť rozvětvený do viac menších kanálov. Ihlu 3, ktorá je spojená s tlačným čapom 13 pritláča do sedla 5 pružina 8, ktorá je umiestnená v držiaku 7. Držiak 7 a teleso 2 spolu přidržuje puzdro 9. Médium je privádzané prívodným kanálom 1 pod vysokým tlakom do priestorov pod vlnovec 4 a pod ihlu 3. Držiak 7 a tlačný čap 13 spojuje vysokotlaký vlnovec 4, ktorý je jedným koncom připevněný na tlačný čap 13, ktorý je spojený s tyčinkou 18 ihly 3 a druhým koncom je přitlačený pod těsněním 10 medzi maticu 14 a! držiak 7. Pri začiatku pracovného cyklu médium prúdi cez prívodný kanál do priestoru 11 a 12 stlačí vlnovec 4, ktorý premóže tlak pružiny 8 a tým nadvihne tlačný čap 13 a ihlu 3, ktorá uvolní výtokový kanál 6 a tým umožní, aby médium striekalo do spalovacieho priestoru motora. Keď tlak média poklesne dosadne ihla 3 do sedla 5 a zabráni vytekaniu média, ktoré sa nachádza v prívodnom kanáli 1 a v priestore 12 pod ihlou 3. Dosadnutie ihly 3 vykoná tlak pružiny 8.The injection nozzle consists of a needle body 2 which abuts against the seat 5 and prevents fuel leakage through the outflow channel 6, which can be branched into several smaller channels. The needle 3, which is connected to the thrust pin 13, presses the spring 8 into the seat 5, which is located in the holder 7. The holder 7 and the body 2 hold the housing 9 together. The holder 7 and the thrust pin 13 connect a high-pressure bellows 4, which is fixed at one end to the thrust pin 13, which is connected to the rod 18 of the needle 3, and the other end is pressed under the seal 10 between the nut 14a . holder 7. At the start of the duty cycle, the medium flows through the inlet duct into spaces 11 and 12, compressing the bellows 4, which overcomes the pressure of the spring 8, thereby lifting the thrust pin 13 and needle 3 to release the outlet duct 6 thereby engine compartment. When the pressure of the medium drops, the needle 3 engages the seat 5 and prevents leakage of the medium present in the supply channel 1 and in the space 12 below the needle 3. The seating of the needle 3 exerts a spring pressure 8.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS864047A CS259256B1 (en) | 1985-07-29 | 1985-07-29 | Injection nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS864047A CS259256B1 (en) | 1985-07-29 | 1985-07-29 | Injection nozzle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CS404786A1 CS404786A1 (en) | 1988-01-15 |
| CS259256B1 true CS259256B1 (en) | 1988-10-14 |
Family
ID=5382293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CS864047A CS259256B1 (en) | 1985-07-29 | 1985-07-29 | Injection nozzle |
Country Status (1)
| Country | Link |
|---|---|
| CS (1) | CS259256B1 (en) |
-
1985
- 1985-07-29 CS CS864047A patent/CS259256B1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CS404786A1 (en) | 1988-01-15 |
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