DE29502145U1 - Exhaust gas recirculation control valve - Google Patents
Exhaust gas recirculation control valveInfo
- Publication number
- DE29502145U1 DE29502145U1 DE29502145U DE29502145U DE29502145U1 DE 29502145 U1 DE29502145 U1 DE 29502145U1 DE 29502145 U DE29502145 U DE 29502145U DE 29502145 U DE29502145 U DE 29502145U DE 29502145 U1 DE29502145 U1 DE 29502145U1
- Authority
- DE
- Germany
- Prior art keywords
- exhaust gas
- control valve
- valve
- pressure
- gas recirculation
- 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
- 238000002485 combustion reaction Methods 0.000 claims description 5
- 239000007789 gas Substances 0.000 description 5
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
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
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/52—Systems for actuating EGR valves
- F02M26/55—Systems for actuating EGR valves using vacuum actuators
- F02M26/58—Constructional details of the actuator; Mounting thereof
-
- 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
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
- F02M26/39—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with two or more EGR valves disposed in series
-
- 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
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/52—Systems for actuating EGR valves
- F02M26/53—Systems for actuating EGR valves using electric actuators, e.g. solenoids
-
- 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
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/52—Systems for actuating EGR valves
- F02M26/55—Systems for actuating EGR valves using vacuum actuators
- F02M26/56—Systems for actuating EGR valves using vacuum actuators having pressure modulation valves
- F02M26/57—Systems for actuating EGR valves using vacuum actuators having pressure modulation valves using electronic means, e.g. electromagnetic valves
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Exhaust-Gas Circulating Devices (AREA)
Description
: &Ggr; &Ggr;·/: &Ggr;&Ggr;·/
Die Neuerung betrifft ein Abgasrückführventil für eine Brennkraftmaschine nach
dem Oberbegriff des Hauptanspruchs.
5The innovation relates to an exhaust gas recirculation valve for an internal combustion engine according to the preamble of the main claim.
5
Ein solches Steuerventil ist z. B. Gegenstand der DE-OS 42 04 434. Es hat sich gezeigt, daß dieses Steuerventil den Druckpulsationen im Ansaug- und Abgassystem von Brennkraftmaschinen, die mittels Turbolader aufgeladen werden, nicht standhält und in besonderen Fällen öffnet, wenn keine Abgasrückführung vorgesehen ist.Such a control valve is, for example, the subject of DE-OS 42 04 434. It has been shown that this control valve cannot withstand the pressure pulsations in the intake and exhaust system of internal combustion engines that are charged by means of turbochargers and opens in special cases when no exhaust gas recirculation is provided.
Hiervon ausgehend liegt der Neuerung die Aufgabe zugrunde, Maßnahmen
aufzufinden, mit denen ein gattungsgemäßes Steuerventil z. B. für den harten Einsatz bei Turbomotoren geeignet ist.
15Based on this, the innovation is based on the task of finding measures with which a generic control valve is suitable for the tough use in turbo engines, for example.
15
Diese Aufgabe ist mit den im Kennzeichen des Schutzanspruchs angegebenen Merkmalen gelöst worden. Vorteilhafte Weiterbildungen sind mit den Merkmalen der Unteransprüche angegeben.This problem has been solved with the features specified in the characterizing part of the protection claim. Advantageous further developments are specified with the features of the subclaims.
Ein Ausführungsbeispiel der Neuerung ist in der Zeichnung dargestellt und wird nachfolgend mit Angabe erreichbarer Vorteile beschrieben.An example of the innovation is shown in the drawing and is described below with details of the achievable advantages.
Die Zeichnung zeigt einen Teilschnitt eines erfindungsgemäßen Abgasrückführsteuerventiis 1 für Brennkraftmaschinen, das mit einem Steuerventilgehäuse 2 an das Luftansaugsystem und das Abgassystem einer Brennkraftmaschine anschließbar ist. Das Steuerventilgehäuse 2 ist mit einem Elektromagnetsteller 3 verbunden, der das Steuerventil entgegen der Kraft einer nicht dargestellten Schließfeder öffnet. Es ist nun vorgesehen, daß zwischen einem Anschlußkanal 4 für Abgas und dem Steuerventil ein zusätzliches Ventil 5 angeordnet ist, das bei höheren Ansaugdrücken gegenüber den Abgasdrücken schließt.The drawing shows a partial section of an exhaust gas recirculation control valve 1 according to the invention for internal combustion engines, which can be connected to the air intake system and the exhaust system of an internal combustion engine using a control valve housing 2. The control valve housing 2 is connected to an electromagnetic actuator 3, which opens the control valve against the force of a closing spring (not shown). It is now provided that an additional valve 5 is arranged between a connection channel 4 for exhaust gas and the control valve, which closes at higher intake pressures than the exhaust pressures.
9507A S.9507A p.
Vorteilhafterweise ist vorgesehen, daß das zusätzliche Ventil 5 von einem
pneumatischen Steller 6 betätigt wird, dessen Membrane 7 über Anschlüsse 8, 9 einerseits mit denn Ansaugdruck und andererseits mit dem Abgasdruck beaufschlagt
ist.
5Advantageously, the additional valve 5 is controlled by a
pneumatic actuator 6, the diaphragm 7 of which is subjected to the intake pressure on the one hand and the exhaust pressure on the other hand via connections 8, 9.
5
In einer alternativen, nicht dargestellten Ausführung kann vorgesehen sein, daß
das zusätzliche Ventil 5 von einem elektrischen Steller betätigt wird, dessen
Bestromung von einem Druckschalter geschaltet wird, dessen Eingänge mit dem Ansaugdruck und dem Abgasdruck beaufschlagt sind.
10In an alternative embodiment not shown, it can be provided that the additional valve 5 is actuated by an electrical actuator whose
The current supply is switched by a pressure switch whose inputs are subjected to the intake pressure and the exhaust pressure.
10
Mit dem neuerungsgemäßen Abgasrückführsteuerventil liegt eine leicht zu
fertigende Einrichtung vor, die für den harten Einsatz z. B. bei Turbomotoren geeignet
ist.The new exhaust gas recirculation control valve provides an easy-to-use
manufacturing facility that is suitable for tough use, e.g. in turbo engines.
9507A S.9507A p.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE29502145U DE29502145U1 (en) | 1995-02-10 | 1995-02-10 | Exhaust gas recirculation control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE29502145U DE29502145U1 (en) | 1995-02-10 | 1995-02-10 | Exhaust gas recirculation control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE29502145U1 true DE29502145U1 (en) | 1995-03-23 |
Family
ID=8003691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE29502145U Expired - Lifetime DE29502145U1 (en) | 1995-02-10 | 1995-02-10 | Exhaust gas recirculation control valve |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE29502145U1 (en) |
-
1995
- 1995-02-10 DE DE29502145U patent/DE29502145U1/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R207 | Utility model specification |
Effective date: 19950504 |
|
| R081 | Change of applicant/patentee |
Owner name: PIERBURG AG, DE Free format text: FORMER OWNER: PIERBURG GMBH, 41460 NEUSS, DE Effective date: 19960802 |
|
| R150 | Utility model maintained after payment of first maintenance fee after three years |
Effective date: 19980306 |
|
| R157 | Lapse of ip right after 6 years |
Effective date: 20011201 |