DE4224988A1 - Combined hydrostatic valve control and injection pump - are located in single housing, and both use same camshafts, levers, etc. - Google Patents

Combined hydrostatic valve control and injection pump - are located in single housing, and both use same camshafts, levers, etc.

Info

Publication number
DE4224988A1
DE4224988A1 DE19924224988 DE4224988A DE4224988A1 DE 4224988 A1 DE4224988 A1 DE 4224988A1 DE 19924224988 DE19924224988 DE 19924224988 DE 4224988 A DE4224988 A DE 4224988A DE 4224988 A1 DE4224988 A1 DE 4224988A1
Authority
DE
Germany
Prior art keywords
injection pump
valve control
functional unit
valve
stop sleeve
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Withdrawn
Application number
DE19924224988
Other languages
German (de)
Inventor
Ludwig Elsbett
Guenter Elsbett
Klaus Elsbett
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to DE19924224988 priority Critical patent/DE4224988A1/en
Publication of DE4224988A1 publication Critical patent/DE4224988A1/en
Withdrawn legal-status Critical Current

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
    • F02M57/00—Fuel-injectors combined or associated with other devices
    • F02M57/04—Fuel-injectors combined or associated with other devices the devices being combustion-air intake or exhaust valves

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)

Abstract

The combined functional unit (2 - 24) is for injection pump and valve control, which are both located in one housing, and use the same constructional parts. Pump and valve control are connected by a common regulator rod, and regulated together. The valve control has a decompression device, using an axially adjustable stop sleeve, which permits a variable valve stop. The stop sleeve is held turnable via a thread, and the turning movement is transmitted via a toothed drive. The valve control is hydraulic, using e.g. cooling oil. USE/ADVANTAGE - Space-saving combined hydrostatic valve control and injection pump uses fewer parts.

Description

Einspritzung und Ventilsteuerung sind in einem einzigen Pumpengehäuse untergebracht; dadurch entfallen separate Nockenwelle für Ventilsteuerung, Stößelstangen, Kipphebel - platzsparend!Injection and valve timing are in one Pump housing housed; this eliminates separate Camshaft for valve timing, push rods, rocker arms - space-saving!

BildbeschreibungImage description Fig. 1 Fig. 1

Eine rotierende Nockenwelle 1 bewegt einen Rollenstößel 2 in dem Pumpengehäuse 15 hin und her. Die Feder 12 sorgt dafür, daß die Hubbewegung auch beim Abwärtsgang dem Nocken­ profil folgt. Der Pumpenkolben 4 ist über die Gewindehülse 3 mit dem Stößel 2 verbunden und macht somit den gleichen Hub wie der Stößel.A rotating camshaft 1 moves a roller tappet 2 back and forth in the pump housing 15 . The spring 12 ensures that the lifting movement follows the cam profile even in the downward gear. The pump piston 4 is connected to the plunger 2 via the threaded sleeve 3 and thus makes the same stroke as the plunger.

Über den Ölzulauf 6 und die Bohrung 21 fließt Öl über den Kolben 4. Sobald dieser während der Aufwärtsbewegung die Bohrung 21 verschließt, wird das Öl (Motoröl) aus Kühlung Hub wie der Stößel.Oil flows through the piston 4 via the oil inlet 6 and the bore 21 . As soon as this closes the bore 21 during the upward movement, the oil (engine oil) from the cooling stroke becomes like the tappet.

Über den Ölzulauf 6 und die Bohrung 21 fließt Öl über den Kolben 4. Sobald dieser während der Aufwärtsbewegung die Bohrung 21 verschließt, wird das Öl (Motoröl) aus Kühlung oder Schmierung in der Leitung 7 komprimiert und der Nehmer­ kolben 9 aus Nehmerzylinder 8 herausgedrückt und somit das Ventil 14, das im Zylinderkopf 20 gelagert ist, geöffnet. Die Ventilfeder 13 sorgt dafür, daß beim Abwärtshub des Stößels das Ventil wieder schließt, indem Nehmerkolben und Öl in Leitung 7 zurückgedrückt werden. Eine eventuelle Leckage an Pumpen- und Nehmerkolben wird automatisch er­ setzt, wenn die Bohrung 21 freigegeben wird, so daß keine Ventilspiel-Nachstellung nötig ist.Oil flows through the piston 4 via the oil inlet 6 and the bore 21 . As soon as this closes the bore 21 during the upward movement, the oil (engine oil) from cooling or lubrication is compressed in the line 7 and the slave piston 9 is pushed out of the slave cylinder 8 and thus the valve 14 , which is mounted in the cylinder head 20 , is opened. The valve spring 13 ensures that the valve closes again during the downward stroke of the tappet, in that slave piston and oil in line 7 are pushed back. Any leakage in the pump and slave pistons is automatically set when the bore 21 is released, so that no valve clearance adjustment is necessary.

Durch Verdrehen der Hülse 11 wird auch die korrespondierende Gewindehülse 3 verdreht und damit der Vorhub geändert (siehe P 31 05 205). Das hat zur Folge, daß die Bohrung 21 im Pumpenzylinder 5 früher oder später geschlossen werden kann, was bedeutet, daß unterschiedliche Hübe und Steuerzei­ ten eingestellt werden können. Zweckmäßigerweise wird man beispielsweise beim Start oder bei niedrigen Drehzahlen eine kurze Steuerzeit bzw. einen niedrigen Hub einstellen.By turning the sleeve 11 , the corresponding threaded sleeve 3 is also rotated, thereby changing the forward stroke (see P 31 05 205). This has the consequence that the bore 21 in the pump cylinder 5 can be closed sooner or later, which means that different strokes and Steuerzei ten can be set. It is useful to set a short control time or a low stroke, for example at the start or at low speeds.

Die Steuerung kann in gleicher Weise wie die FB-Regelung der Einspritzung vorgenommen werden, beispielsweise mit der gleichen Regelstange.The control can be done in the same way as the FB control the injection can be made, for example with the same control rod.

Eine Dekompression, das heißt ein Offenbleiben des Ventils zur Starterleichterung, kann über das Gewindezahnrad 10 vorgenommen werden (Fig. 1a), das über die mit ihm kämmen­ de Zahnstange 22 durch ein Außengewinde 23 axial verschoben werden kann. Der Nehmerkolben 9 schlägt beim Schließen an dieses Gewindezahnrad 10 an und verhindert in seiner unteren Stellung ein Ventilschließen. Während des Ventilhubes ist der Anschlag frei, so daß keine Kraft auf das Gewindezahn­ rad wirkt, das dann leicht verstellt werden kann.A decompression, that is to say that the valve remains open to make starting easier, can be carried out via the threaded gearwheel 10 ( FIG. 1a), which can be moved axially via the rack 22 meshing with it by an external thread 23 . The slave piston 9 strikes this threaded gear 10 when closing and prevents valve closing in its lower position. During the valve stroke, the stop is free, so that no force acts on the toothed wheel, which can then be easily adjusted.

Fig. 2 Fig. 2

Fig. 2 zeigt den Aufbau einer solchen Pumpe: Im Gehäuse 15 sind sowohl die Elemente für die Einspritzung wie auch für die Ventilbetätigung untergebracht. Die Ele­ mente können weitgehend identisch sein, beispielsweise Rol­ lenstößel 2, Gewindehülse 3, Feder 12, Verstellhülse 11 usw., und beispielsweise von der gleichen Regelstange 24 verstellt werden. Zusätzlich sind in der Pumpe die bekannten Steuerelemente untergebracht. In der Zeichnung dient der mittlere Anschluß 19 der Einspritzung, und die Anschlüsse 17 und 18 führen zum Einlaß- bzw. Auslaßventil. Diese Anord­ nung kann auf beliebig viele Anschlüsse erweitert werden, die auch untereinander vertauschbar sind, da alle Einbaumaße gleich sind. Fig. 2 shows the construction of such a pump: the housing 15, both the elements for the injection as is also housed for valve actuation. The ele ments can be largely identical, for example Rol lenstößel 2 , threaded sleeve 3 , spring 12 , adjusting sleeve 11 , etc., and for example be adjusted by the same control rod 24 . In addition, the known controls are housed in the pump. In the drawing, the middle port 19 is used for injection, and the ports 17 and 18 lead to the intake and exhaust valves. This arrangement can be extended to any number of connections, which are also interchangeable, since all installation dimensions are the same.

Claims (7)

1. Kombinierte Funktionseinheit von Einspritzpumpe und Ven­ tilsteuerung, die beide in einem Gehäuse untergebracht sind und gleiche Bauteile verwenden.1. Combined functional unit of injection pump and Ven til control, both housed in one housing and use the same components. 2. Kombinierte Funktionseinheit von Einspritzpumpe und Ven­ tilsteuerung, die durch eine gemeinsame Regelstange ver­ bunden sind und gemeinsam gesteuert werden.2. Combined functional unit of injection pump and Ven til control by a common control rod ver are bound and controlled together. 3. Dekompressionsvorrichtung für eine Ventilsteuerung mit­ tels einer axial verstellbaren Anschlaghülse, die einen variablen Ventilanschlag zuläßt.3. Decompression device for valve control with means of an axially adjustable stop sleeve, the one allows variable valve stop. 4. Dekompressionsvorrichtung nach Anspruch 3, dadurch ge­ kennzeichnet, daß die axial verstellbare Anschlaghülse über ein Gewinde drehbar gelagert ist.4. Decompression device according to claim 3, characterized ge indicates that the axially adjustable stop sleeve is rotatably supported by a thread. 5. Dekompressionsvorrichtung nach Anspruch 4, dadurch ge­ kennzeichnet, daß eine Drehbewegung auf die Anschlaghülse über Zahntrieb erfolgt.5. decompression device according to claim 4, characterized ge indicates that a rotational movement on the stop sleeve via pinion. 6. Kombinierte Funktionseinheit von Einspritzpumpe und Ven­ tilsteuerung nach Anspruch 1 oder 2, dadurch gekennzeich­ net, daß als Kraftübertragungsweise für die Ventilsteue­ rung Hydraulik und als Medium Motoröl verwendet werden.6. Combined functional unit of injection pump and Ven Til control according to claim 1 or 2, characterized net that as a power transmission method for the valve timing Hydraulics and engine oil can be used as a medium. 7. Kombinierte Funktionseinheit von Einspritzpumpe und Ven­ tilsteuerung nach Anspruch 6, dadurch gekennzeichnet, daß das Motoröl Kühlöl ist.7. Combined functional unit of injection pump and Ven til control according to claim 6, characterized in that the engine oil is cooling oil.
DE19924224988 1991-08-02 1992-07-29 Combined hydrostatic valve control and injection pump - are located in single housing, and both use same camshafts, levers, etc. Withdrawn DE4224988A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19924224988 DE4224988A1 (en) 1991-08-02 1992-07-29 Combined hydrostatic valve control and injection pump - are located in single housing, and both use same camshafts, levers, etc.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4125557 1991-08-02
DE19924224988 DE4224988A1 (en) 1991-08-02 1992-07-29 Combined hydrostatic valve control and injection pump - are located in single housing, and both use same camshafts, levers, etc.

Publications (1)

Publication Number Publication Date
DE4224988A1 true DE4224988A1 (en) 1993-02-04

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10125544A1 (en) * 2001-05-23 2002-12-12 Mtu Friedrichshafen Gmbh Hydraulic operating device for valve has doser and operating device in single unit
FR2840353A1 (en) * 2002-05-29 2003-12-05 Marcel Segut Engine hydraulic control valve gear comprises camshaft with master cylinder opposite each cam, as cam compresses master cylinder pushrod oil pressure in receptor cylinder exerts amplified pressure on inlet and exhaust valves
DE10224039A1 (en) * 2002-05-31 2003-12-11 Ina Schaeffler Kg Hydraulically operated, variable valve train of an internal combustion engine
US7080614B2 (en) 2002-05-31 2006-07-25 Ina-Schaeffler Kg Hydraulically actuated, variable valve drive of an internal combustion engine
DE202013002671U1 (en) 2013-03-20 2013-04-15 Günter Elsbett Gas exchange control of internal combustion engines with hydraulically operated gas exchange devices
DE102013004723A1 (en) 2013-03-20 2014-09-25 Günter Elsbett Gas exchange control of internal combustion engines with hydraulically operated gas exchange devices

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10125544A1 (en) * 2001-05-23 2002-12-12 Mtu Friedrichshafen Gmbh Hydraulic operating device for valve has doser and operating device in single unit
DE10125544C2 (en) * 2001-05-23 2003-07-10 Mtu Friedrichshafen Gmbh Device for the hydraulic actuation of a valve
FR2840353A1 (en) * 2002-05-29 2003-12-05 Marcel Segut Engine hydraulic control valve gear comprises camshaft with master cylinder opposite each cam, as cam compresses master cylinder pushrod oil pressure in receptor cylinder exerts amplified pressure on inlet and exhaust valves
DE10224039A1 (en) * 2002-05-31 2003-12-11 Ina Schaeffler Kg Hydraulically operated, variable valve train of an internal combustion engine
US7080614B2 (en) 2002-05-31 2006-07-25 Ina-Schaeffler Kg Hydraulically actuated, variable valve drive of an internal combustion engine
DE202013002671U1 (en) 2013-03-20 2013-04-15 Günter Elsbett Gas exchange control of internal combustion engines with hydraulically operated gas exchange devices
DE102013004723A1 (en) 2013-03-20 2014-09-25 Günter Elsbett Gas exchange control of internal combustion engines with hydraulically operated gas exchange devices

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