DE2938431A1 - Supercharged fuel injection IC engine - has pistons cooled by oil injector fixed to flange of crankshaft - Google Patents

Supercharged fuel injection IC engine - has pistons cooled by oil injector fixed to flange of crankshaft

Info

Publication number
DE2938431A1
DE2938431A1 DE19792938431 DE2938431A DE2938431A1 DE 2938431 A1 DE2938431 A1 DE 2938431A1 DE 19792938431 DE19792938431 DE 19792938431 DE 2938431 A DE2938431 A DE 2938431A DE 2938431 A1 DE2938431 A1 DE 2938431A1
Authority
DE
Germany
Prior art keywords
valve
crankcase
piston
oil
flange
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Withdrawn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
DE19792938431
Other languages
German (de)
Inventor
Ulrich 7140 Ludwigsburg Conrad
Herbert 7000 Stuttgart Schmidt
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.)
Daimler Benz AG
Original Assignee
Daimler Benz AG
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 Daimler Benz AG filed Critical Daimler Benz AG
Priority to DE19792938431 priority Critical patent/DE2938431A1/en
Publication of DE2938431A1 publication Critical patent/DE2938431A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P3/00—Liquid cooling
    • F01P3/06—Arrangements for cooling pistons
    • F01P3/08—Cooling of piston exterior only, e.g. by jets

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)

Abstract

The injector has an oil jet nozzle (2) in the crankcase directed upwards to spray oil onto the piston. The jet is connected by a passage (11) to a valve (13) in the injector body. The valve has a piston which is depressed against a spring (5) by the oil pressure. The valve body has a flat upper surface which fits against a flange (9) in the crankcase level with the bottom edge of the cylinders. It is located by dowels (7,8) and held to the flange by a screw (11). Oil enters the valve from a passage (15) in the crankcase. The whole injector is easily fixed in the crankcase.

Description

Einrichtung zur Kolbenkühlung für BrennkraftmaschinenDevice for piston cooling for internal combustion engines

Die Erfindung geht aus von einer Einrichtung zur Kolbenkühlung für Brennkraftmaschinen, insbesondere aufgeladene luftverdichtende Einspritzbrennkraftmaschinen, nach der Gattung gemäß dem Oberbegriff des Hauptanspruchs.The invention is based on a device for piston cooling for Internal combustion engines, in particular supercharged air-compressing injection internal combustion engines, according to the genre according to the preamble of the main claim.

Nach der DE-PS 968 013 ist eine Einrichtung zur Kolbenkühlung bekannt, die feststehend im Kurbelgehäuse einer Brennkraftmaschine angeordnet und mit einer Düse versehen ist, der Öl aus dem Hauptschmierölkreislauf unter Druck zugeführt und gegen eine Stelle des Kolbens gespritzt wird.According to DE-PS 968 013 a device for piston cooling is known, which is fixedly arranged in the crankcase of an internal combustion engine and with a Nozzle is provided, which supplies oil from the main lubricating oil circuit under pressure and is injected against a point on the piston.

Das in der Einrichtung eingebaute Ventil wird vom Öldruck des Hauptschmierölkreislaufes gesteuert.The valve built into the device is controlled by the oil pressure of the main lubricating oil circuit controlled.

Die Aufgabe der Erfindung besteht nun darin, gegenüber der bekannten Einrichtung eine vor Bau- und Montageaufwand vereinfachte Kolbenkühleinrichtung zu schaffen.The object of the invention is now compared to the known Establishment of a piston cooling device that is simplified in terms of construction and assembly costs to accomplish.

Zur lösung dieser Aufgabe sinkt bei der Erfindung die im kennzeichnenden Teil des Anspruchs 1 angegebenen Merkmale vorgesehen, wobei in den Unteransprüchen für die Aufgabelösung vorteilhafte und förderliche Weiterbildungen beansprucht sind.To solve this problem, the invention decreases in the characterizing Part of claim 1 specified features provided, wherein in the subclaims for the task solution advantageous and beneficial developments are claimed.

Durch die erfindungsgemäßen Maßnahmen ist kein gesonderter Dichtsitz in der Einrichtung notwendig. Ferner ist durch das vormontierte Ventil eine einfachere Montage der Einrichtung möglich, die noch durch die Fixierstifte erleichtert wird.Due to the measures according to the invention, there is no separate sealing seat necessary in the facility. Furthermore, the preassembled valve makes it easier Installation of the device possible, which is made easier by the fixing pins.

In der Zeichnung ist die Erfindung anhand eines Ausführungsbeispieles näher beschrieben. Es zeigen Fig. 1 einen Teilschnitt durch eine für die Kolbenkühlung vorgesehene Einrichtung, die in Höhle der Zylinderunterkante am Kurbelgehäuse befestigt ist und Fig. 2 die Einrichtung nach der Linie II - II in Fig. 1.In the drawing, the invention is based on an exemplary embodiment described in more detail. 1 shows a partial section through one for piston cooling provided device, which is attached to the crankcase in the lower edge of the cylinder and FIG. 2 shows the device according to the line II-II in FIG. 1.

Die in Fig. 1 gezeigte Einrichtung 1 zur Kolbenkühlung für vorzugsweise aufgeladene luftverdichtende Einspritzbrennkraftmaschinen besteht im wesentlichen aus einer Ölspritzdüse 2 und einem als Kolbenventil ausgebildeten Ventil 3, das in einer zylindrischen Ausnehmung 4 gegen den Druck einer Feder 5 axial verschiebbar geführt ist. Die Oberseite der Einrichtung 1 weist eine ebene Anlage fläche 6 mit zwei Fixierstiften 7, 8 auf, die zur Montageerleichterung der Einrichtung dienen. Der strich-punktiert dargestellte Fixierstift 8 liegt vor der Bildebene.The device 1 shown in Fig. 1 for piston cooling for preferably supercharged air-compressing injection internal combustion engines consists essentially from an oil spray nozzle 2 and a valve 3 designed as a piston valve, the axially displaceable in a cylindrical recess 4 against the pressure of a spring 5 is led. The top of the device 1 has a flat contact surface 6 with two locating pins 7, 8, which are used to facilitate assembly of the device. The fixing pin 8 shown in dash-dotted lines lies in front of the image plane.

Die Einrichtung 1 ist mit ihrer Anlagefläche 6 an einer in Höhe der Zylinderunterkante liegenden Kurbelgehäuse flanschfläche 9 des Kurbelgehäuses 10 durch eine Schraube 11 befestigt. Diese Kurbelgehäuseflanschfläche 9 wirkt bei Öldruckentlastung gleichzeitig als Dichtsitz für das Kolbenventil 3, welches etwa in Längsmitte eine Ringnut 12 aufweist, in der eine tangential angeordnete und in einer das Kolbenventil 3 umgebenden Wand 13 fixierte Spannhülse 14 vorgesehen ist.The device 1 is with its contact surface 6 at a level of Cylinder lower edge lying crankcase flange surface 9 of crankcase 10 fastened by a screw 11. This crankcase flange surface 9 acts at Oil pressure relief at the same time as a sealing seat for the piston valve 3, which is about in the longitudinal center has an annular groove 12 in which a tangentially arranged and in a clamping sleeve 14 fixed to a wall 13 surrounding the piston valve 3 is provided.

Durch diese Anordnung kann das federbelastete Kolbenventil 3 nicht aus der zylindrischen Ausnehmung 4 vor der Befestigung der Einrichtung 1 herausspringen. Das Kolbenventil 3 ist koaxial zu einer in dem Kurbelgehäuse 10 vorgesehenen Ölzuführbohrung 15 angeordnet, die von einem nicht dargestellten Hauptölkanal des Hauptschmierölkreislaufes abzweigt.With this arrangement, the spring-loaded piston valve 3 cannot Jump out of the cylindrical recess 4 before the device 1 is fastened. The piston valve 3 is coaxial with an oil supply bore provided in the crankcase 10 15 arranged by a main oil channel, not shown, of the main lubricating oil circuit branches off.

Da im unteren Drehzahlbereich der Brennkraftmaschine keine Kühlung notwendig ist, bleibt das Kolbenventil 3 in Schließstellung (Fig. 1). Erst bei Erreichen des für die Maschine erforderlichen Öldrucks wird das Kolbenventil 3 gegen die Kraft der Feder 5 niedergedrückt. Aus der Ölzuführungsbohrung 15 kommendes Drucköl wird dann über einen Ölraum 16 und über einer Zulaufbohrung 17 einer Abspritzbohrung 18 der Düse 2 zugeführt. Von dort aus wird es gegen eine Stelle eines nicht dargestellten Kolbens der Brennkraftmaschine gespritzt.Since there is no cooling in the lower speed range of the internal combustion engine is necessary, the piston valve 3 remains in the closed position (Fig. 1). Only when it is reached the oil pressure required for the machine is the piston valve 3 against the force the spring 5 depressed. From the oil supply bore 15 coming pressure oil is then via an oil chamber 16 and via an inlet bore 17 of a spray bore 18 fed to the nozzle 2. From there it becomes a point of a not shown Piston of the internal combustion engine injected.

LeerseiteBlank page

Claims (3)

Patentansprüche 1. Einrichtung zur Kolbenkühlung von Brennkraftmaschinen, insbesondere aufgeladenen luftverdichtenden Einspritzbrennkraftmaschinen, die im Kurbelgehäuse angeordnet ist und aus einer Ölspritzdüse und einem federbelasteten Ventil besteht, das eine mit dem Schmierölkreislauf in Verbindung stehende Ölzuführbohrung abschließt, d a d u r c h g e k e n n z e i c h n e t , daß die Einrichtung (1) an der Kurbelgehäuseflanschfläche (9) in Höhe der Zylinderunterkante angeschraubt ist, derart, daß das als Kolbenventil ausgebildete Ventil (3) mitseiner Stirnfläche an der gleichzeitig als Ventilsitz wirkenden Kurbelgehäuseflanschfläche (9) anschlägt. Claims 1. Device for piston cooling of internal combustion engines, in particular supercharged air-compressing injection internal combustion engines, which are im Crankcase is arranged and consists of an oil spray nozzle and a spring-loaded There is a valve that has an oil feed hole connected to the lubricating oil circuit concludes that the device (1) screwed to the crankcase flange surface (9) at the level of the lower edge of the cylinder is such that the valve (3) designed as a piston valve with its end face strikes against the crankcase flange surface (9), which also acts as a valve seat. 2. Einrichtung nach Anspruch 1, d a d u r c h g e k e n n -z e i c h n e t , daß das federb.lastete Kolbenventil (3) eine Ringnut (12) aufweist, in die eine die Längabewegung des Kolbenventils (3) begrenzende, tangential angeordnete Spannhülse (14) eingreift. 2. Device according to claim 1, d a d u r c h g e k e n n -z e i c h n e t that the spring-loaded piston valve (3) has an annular groove (12), in which one the longitudinal movement of the piston valve (3) limiting, tangentially arranged Clamping sleeve (14) engages. 3. Einrichtung nach Anspruch 1 oder 2 , d a d u r c h g e k e n n z e i c h n e t , daß die der Kurbelflanschfläche (9) gegenüberliegende Anlagefläche (6) der Einrichtung (1) mit Fixierstiften (7, 8) versehen ist.3. Device according to claim 1 or 2, d a d u r c h g e k e n n z e i c h n e t that the contact surface opposite the crank flange surface (9) (6) of the device (1) is provided with locating pins (7, 8).
DE19792938431 1979-09-22 1979-09-22 Supercharged fuel injection IC engine - has pistons cooled by oil injector fixed to flange of crankshaft Withdrawn DE2938431A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19792938431 DE2938431A1 (en) 1979-09-22 1979-09-22 Supercharged fuel injection IC engine - has pistons cooled by oil injector fixed to flange of crankshaft

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19792938431 DE2938431A1 (en) 1979-09-22 1979-09-22 Supercharged fuel injection IC engine - has pistons cooled by oil injector fixed to flange of crankshaft

Publications (1)

Publication Number Publication Date
DE2938431A1 true DE2938431A1 (en) 1981-03-26

Family

ID=6081602

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19792938431 Withdrawn DE2938431A1 (en) 1979-09-22 1979-09-22 Supercharged fuel injection IC engine - has pistons cooled by oil injector fixed to flange of crankshaft

Country Status (1)

Country Link
DE (1) DE2938431A1 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0100863A1 (en) * 1982-07-22 1984-02-22 Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 Oil spraying device for cooling pistons of internal-combustion engines
WO1993005285A1 (en) * 1991-09-09 1993-03-18 Caterpillar Inc. A piston cooling nozzle
US5267534A (en) * 1991-09-09 1993-12-07 Caterpillar Inc. Piston cooling nozzle
FR2861804A1 (en) * 2003-11-04 2005-05-06 Bontaz Centre Sa PISTON COOLING JET WITH REDUCED AXIS
DE102015008932A1 (en) 2015-07-10 2017-01-12 Daimler Ag Oil injection device and internal combustion engine with an oil injection device
DE102016219857A1 (en) 2016-10-12 2018-04-12 Bayerische Motoren Werke Aktiengesellschaft Device for cooling a piston of a reciprocating internal combustion engine
DE102021111204A1 (en) 2021-04-30 2022-11-03 Bayerische Motoren Werke Aktiengesellschaft Method for manufacturing a crankcase, crankcase and mold for manufacturing a crankcase

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0100863A1 (en) * 1982-07-22 1984-02-22 Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 Oil spraying device for cooling pistons of internal-combustion engines
WO1993005285A1 (en) * 1991-09-09 1993-03-18 Caterpillar Inc. A piston cooling nozzle
US5267534A (en) * 1991-09-09 1993-12-07 Caterpillar Inc. Piston cooling nozzle
FR2861804A1 (en) * 2003-11-04 2005-05-06 Bontaz Centre Sa PISTON COOLING JET WITH REDUCED AXIS
EP1529935A1 (en) * 2003-11-04 2005-05-11 Bontaz Centre Jet for piston cooling with reduced inter-axle
US7104225B2 (en) 2003-11-04 2006-09-12 Bontaz Centre Piston cooling nozzle with small distance between axes
AU2004226948B2 (en) * 2003-11-04 2007-05-10 Bontaz Centre Piston cooling nozzle with small distance between axes
DE102015008932A1 (en) 2015-07-10 2017-01-12 Daimler Ag Oil injection device and internal combustion engine with an oil injection device
DE102016219857A1 (en) 2016-10-12 2018-04-12 Bayerische Motoren Werke Aktiengesellschaft Device for cooling a piston of a reciprocating internal combustion engine
DE102021111204A1 (en) 2021-04-30 2022-11-03 Bayerische Motoren Werke Aktiengesellschaft Method for manufacturing a crankcase, crankcase and mold for manufacturing a crankcase

Similar Documents

Publication Publication Date Title
DE8802464U1 (en) Fuel injection valve
DE3328089A1 (en) PISTON FUEL INJECTION PUMP
EP1714030B1 (en) High-pressure pump, particularly for a fuel injection device of a combustion engine
DE2938431A1 (en) Supercharged fuel injection IC engine - has pistons cooled by oil injector fixed to flange of crankshaft
DE102011089857A1 (en) Pump, in particular high-pressure fuel pump for a fuel injection device
EP0597249B1 (en) Fuel injection arrangement, especially unit injector for an internal combustion engine
DE102008035087B4 (en) Injector
EP0845592A1 (en) Cooling element and fuel injector with cooling element for an internal combustion engine
DE2948907A1 (en) FUEL INJECTION NOZZLE FOR INTERNAL COMBUSTION ENGINES
DE4103055A1 (en) HYDRAULIC GAME COMPENSATION ELEMENT FOR THE USE OF INTERNAL COMBUSTION ENGINES
DE10018708A1 (en) Fuel injection pump has bias device for movable unit for subjecting fuel in fuel pressure chamber to pressure, reciprocal motion regulator that operates if unit raised above upper dead point
DE2442088A1 (en) HYDRAULIC HEAD FOR AN INJECTION PUMP
DE4427717C1 (en) High pressure conduit connection for nozzle holder of fuel injection valve on IC engine cylinder head
EP0240693B1 (en) Fuel injector for internal-combustion engines
DE4225991C2 (en) High pressure air fuel injector for a diesel internal combustion engine
DE10102192B4 (en) Device for holding injection elements in the cylinder head of an internal combustion engine
DE19942983B4 (en) Hydraulic clearance compensation element
DE3342477A1 (en) Injection device for a secondary combustion chamber internal combustion engine
DE3413727A1 (en) FUEL INJECTION NOZZLE FOR AN INTERNAL COMBUSTION ENGINE
EP0027792A1 (en) Injection pump for internal-combustion engines with fuel injection, particularly for diesel engines
DE4139907A1 (en) High pressure fuel injection device - has labyrinth seal between pump piston and cylinder liner, or between nozzle pin and housing
DE102022108081B4 (en) Pneumatic valve spring
DE10355028A1 (en) High pressure pump especially for vehicle has the piston rod and cam follower made in one piece and spring loaded to press onto the drive cam
DE3117018A1 (en) FUEL INJECTION NOZZLE
DE3613981A1 (en) FUEL INJECTION NOZZLE FOR INTERNAL COMBUSTION ENGINES

Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
8130 Withdrawal