EP0075659B1 - Four-cylinder internal-combustion engine - Google Patents

Four-cylinder internal-combustion engine Download PDF

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Publication number
EP0075659B1
EP0075659B1 EP82105814A EP82105814A EP0075659B1 EP 0075659 B1 EP0075659 B1 EP 0075659B1 EP 82105814 A EP82105814 A EP 82105814A EP 82105814 A EP82105814 A EP 82105814A EP 0075659 B1 EP0075659 B1 EP 0075659B1
Authority
EP
European Patent Office
Prior art keywords
bearing housing
combustion engine
screw
cylinder
cylinder internal
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
Application number
EP82105814A
Other languages
German (de)
French (fr)
Other versions
EP0075659A3 (en
EP0075659A2 (en
Inventor
Herbert Ampferer
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.)
Dr Ing HCF Porsche AG
Original Assignee
Dr Ing HCF Porsche 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 Dr Ing HCF Porsche AG filed Critical Dr Ing HCF Porsche AG
Publication of EP0075659A2 publication Critical patent/EP0075659A2/en
Publication of EP0075659A3 publication Critical patent/EP0075659A3/en
Application granted granted Critical
Publication of EP0075659B1 publication Critical patent/EP0075659B1/en
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/02—Valve drive
    • F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B67/00—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for
    • F02B67/04—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for of mechanically-driven auxiliary apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00—Other engines
    • F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
    • F02B75/18—Multi-cylinder engines
    • F02B2075/1804—Number of cylinders
    • F02B2075/1816—Number of cylinders four

Definitions

  • the invention relates to a reciprocating piston internal combustion engine, preferably a four-cylinder type, with at least one vibration-damping balance shaft, which is rotatably mounted in a bearing housing held on a cylinder crankcase by means of a screw connection.
  • support between the bearing housing and the crankcase is to be achieved in that the cheeks of the bearing housing are supported on walls of a recess in the crankcase.
  • the cheeks of the bearing housing are supported on walls of a recess in the crankcase.
  • the object of the invention is to fasten the bearing housing of the balance shaft to the crankcase in such a way that the rotating inertial forces are supported in a functional manner while avoiding complex manufacturing measures.
  • the main advantages achieved with the invention are the fact that the conical approach of the screw or the nut and the chamfer on the bearing housing support the occurring forces acting transversely to the screw axis in a functional manner.
  • the stud screw has a conical projection which cooperates with a chamfer on the crankcase for support, as a result of which notch effects are kept away from the threaded stud of the stud screw.
  • a reciprocating piston internal combustion engine 1 comprises a cylinder crankcase 2, on the longitudinal side 3 of which a balancer shaft 4 extends, which serves for vibration damping (inertial forces, gas forces).
  • the balance shaft 4 has balance weights 5, 6 and rotates at double the crankshaft speed in a bearing housing 7, which is formed by two housing halves 8, 9.
  • the housing halves 8, 9 are held in position by means of screws 10, 11.
  • the bearing housing 7 is also held by means of screws 12, 13 which are arranged at a distance from one another and are provided at 14 and 15 (FIG. 3). 7 mounting sections 16, 17 are attached to the cylinder crankcase 2 for receiving the bearing housing.
  • the screw 12 (at 14) and the screws, not shown, at 15 are formed by conventional hexagon screws.
  • the screw 13 is represented by a stud 24, the threaded pin 25 of which is screwed into a threaded bore 26.
  • the threaded pin 25 is supported by means of a conical projection 27 on a corresponding chamfer 28 of the cylinder crankcase 2, whereby forces acting on the threaded pin 23 are supported.
  • a screw nut 29 of the stud screw 22 has a conical projection 30 which interacts with a corresponding chamfer 31 of the bearing housing 7.
  • the screw nut 29 is accessible via a recess 32 in the bearing housing 7.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)

Description

Die Erfindung betrifft eine Hubkolbenbrennkraftmaschine, vorzugsweise vierzylindriger Bauart, mit zumindest einer schwingungsdämpfenden Ausgleichswelle, die in einem an einem Zylinderkurbelgehäuse mittels einer Schraubverbindung gehaltenen Lagergehäuse drehbar gelagert ist.The invention relates to a reciprocating piston internal combustion engine, preferably a four-cylinder type, with at least one vibration-damping balance shaft, which is rotatably mounted in a bearing housing held on a cylinder crankcase by means of a screw connection.

Es ist bekannt (SE-A 8103814) das Lagergehäuse der Ausgleichswelle mittels normaler, hauptsächlich in axialer Richtung wirkender Schrauben, zu verbinden. Solche Schrauben sind zur Befestigung des Lagergehäuses der Ausgleichswelle nicht geeignet, da an ihnen keine Vorkehrungen getroffen sind, um die insbesondere im oberen Drehzahlbereich auftretenden, quer zur Schraubenachse wirkenden Kräfte abzustützen.It is known (SE-A 8103814) to connect the bearing housing of the balance shaft by means of normal screws, which act mainly in the axial direction. Such screws are not suitable for fastening the bearing housing of the balancer shaft, since no precautions have been taken to support the forces which occur in the upper speed range and act transversely to the screw axis.

Gemäss einem weiteren Ausführungsbeispiel der vorstehend genannten Patentanmeldung soll eine Abstützung zwischen Lagergehäuse und Kurbelgehäuse dadurch erreicht werden, dass Wangen des Lagergehäuses sich an Wandungen einer Ausnehmung im Kurbelgehäuse abstützen. Hierbei ist nicht nur der hohe Fertigungsaufwand für die Wangen und die Ausnehmung nachteilig, sondern eine wirksame Querkraftabstützung ist aufgrund von nicht zu vermeidenden Herstellungstoleranzen schwerlich realisierbar.According to a further exemplary embodiment of the abovementioned patent application, support between the bearing housing and the crankcase is to be achieved in that the cheeks of the bearing housing are supported on walls of a recess in the crankcase. Not only is the high manufacturing outlay for the cheeks and the recess disadvantageous, but effective shear force support is difficult to achieve due to the inevitable manufacturing tolerances.

Schliesslich ist es aus der DE-AS 1780504 bekannt, eine Radscheibe an einem Nabenflansch mittels einer Kegelmutter zu befestigen, die mit einem in den Nabenflansch eingedrehten Schraubenbolzen zusammenwirkt. An diesem Schraubenbolzen sind keine Massnahmen vorgesehen, um quer zu seiner Längsachse wirkende Kräfte funktionsgerecht aufzunehmen.Finally, it is known from DE-AS 1780504 to fasten a wheel disc to a hub flange by means of a conical nut which interacts with a screw bolt screwed into the hub flange. No measures are provided on this screw bolt in order to functionally absorb forces acting transversely to its longitudinal axis.

Aufgabe der Erfindung ist es, das Lagergehäuse der Ausgleichswelle am Kurbelgehäuse so zu befestigen, dass unter Vermeidung aufwendiger fertigungstechnischer Massnahmen die rotierenden Massenkräfte funktionsgerecht abgestützt werden.The object of the invention is to fasten the bearing housing of the balance shaft to the crankcase in such a way that the rotating inertial forces are supported in a functional manner while avoiding complex manufacturing measures.

Erfindungsgemäss wird diese Aufgabe durch die Merkmale des kennzeichnenden Teils des Anspruches 1 gelöst.According to the invention, this object is achieved by the features of the characterizing part of claim 1.

Die mit der Erfindung hauptsächlich erzielten Vorteile sind darin zu sehen, dass der kegelförmige Ansatz der Schraube bzw. der Schraubenmutter und die Anfasung am Lagergehäuse die auftretenden, quer zur Schraubenachse wirkenden Kräfte funktionsgerecht abstützen. Die Stiftschraube weist zur Abstützung einen mit einer Anfasung des Kurbelgehäuses zusammenarbeitenden kegelförmigen Ansatz auf, wodurch Kerbwirkungen vom Gewindezapfen der Stiftschraube ferngehalten werden.The main advantages achieved with the invention are the fact that the conical approach of the screw or the nut and the chamfer on the bearing housing support the occurring forces acting transversely to the screw axis in a functional manner. The stud screw has a conical projection which cooperates with a chamfer on the crankcase for support, as a result of which notch effects are kept away from the threaded stud of the stud screw.

In der Zeichnung sind Ausführungsbeispiele der Erfindung dargestellt. Es zeigt:

  • Fig. 1 einen Teilquerschnitt einer Hubkolbenbrennkraftmaschine mit der erfindungsgemässen Schraubverbindung;
  • Fig. 2 eine Teilansicht der Fig. 1 in grösserem Massstab und mit einer anderen Ausführungsform;
  • Fig. 3 einen Schnitt nach der Linie 111-111 der Fig. 1.
Exemplary embodiments of the invention are shown in the drawing. It shows:
  • 1 shows a partial cross section of a reciprocating piston internal combustion engine with the screw connection according to the invention;
  • Fig. 2 is a partial view of Figure 1 on a larger scale and with another embodiment.
  • 3 shows a section along the line 111-111 of FIG. 1st

Eine Hubkolbenbrennkraftmaschine 1 umfasst ein Zylinderkurbelgehäuse 2, an dessen Längsseite 3 sich eine Ausgleichswelle 4 erstreckt, die zur Schwingungsdämpfung (Massenkräfte, Gaskräfte) dient.A reciprocating piston internal combustion engine 1 comprises a cylinder crankcase 2, on the longitudinal side 3 of which a balancer shaft 4 extends, which serves for vibration damping (inertial forces, gas forces).

Die Ausgleichswelle 4 weist Ausgleichsgewichte 5, 6 auf und dreht sich mit doppelter Kurbelwellendrehzahl in einem Lagergehäuse 7, das durch zwei Gehäusehälften 8, 9 gebildet wird. Die Gehäusehälften 8,9 werden mittels Schrauben 10, 11 in Lage gehalten.The balance shaft 4 has balance weights 5, 6 and rotates at double the crankshaft speed in a bearing housing 7, which is formed by two housing halves 8, 9. The housing halves 8, 9 are held in position by means of screws 10, 11.

Die Halterung des Lagergehäuses 7 erfolgt ebenfalls mittels im Abstand zueinander angeordneter Schrauben 12, 13, die bei 14 und 15 (Fig. 3) vorgesehen sind. Am Zylinderkurbelgehäuse 2 sind zur Aufnahme des Lagergehäuses 7 Befestigungsabschnitte 16, 17 angebracht.The bearing housing 7 is also held by means of screws 12, 13 which are arranged at a distance from one another and are provided at 14 and 15 (FIG. 3). 7 mounting sections 16, 17 are attached to the cylinder crankcase 2 for receiving the bearing housing.

Die Schraube 12 (bei 14) sowie die nicht dargestellten Schrauben bei 15 werden durch übliche Sechskantschrauben gebildet. Die Schraube 13 ist durch eine Stiftschraube 24 dargestellt, deren Gewindezapfen 25 in eine Gewindebohrung 26 eingedreht ist. Der Gewindezapfen 25 stützt sich mittels eines kegelförmigen Ansatzes 27 an einer korrespondierenden Anfasung 28 des Zylinderkurbelgehäuses 2 ab, wodurch auf den Gewindezapfen 23 einwirkende Kräfte abgestützt werden. Eine Schraubenmutter 29 der Stiftschraube 22 weist einen kegelförmigen Ansatz 30 auf, der mit einer korrespondierenden Anfasung 31 des Lagergehäuses 7 zusammenwirkt. Die Schraubenmutter 29 ist über eine Ausnehmung 32 im Lagergehäuse 7 zugänglich.The screw 12 (at 14) and the screws, not shown, at 15 are formed by conventional hexagon screws. The screw 13 is represented by a stud 24, the threaded pin 25 of which is screwed into a threaded bore 26. The threaded pin 25 is supported by means of a conical projection 27 on a corresponding chamfer 28 of the cylinder crankcase 2, whereby forces acting on the threaded pin 23 are supported. A screw nut 29 of the stud screw 22 has a conical projection 30 which interacts with a corresponding chamfer 31 of the bearing housing 7. The screw nut 29 is accessible via a recess 32 in the bearing housing 7.

Claims (1)

  1. A reciprocating cylinder internal combustion engine, preferably of four-cylinder design, having at least one vibration-damping neutralizing shaft (4) which is rotatably mounted in a bearing housing (7) held on a cylinder crankcase housing (2) by means of a bolt connexion, characterized in that the bolt connexion comprises at least one stud bolt (24) with a tapered shoulder (27) which is supported on a chamfer (28) of the cylinder crankcase housing (2), and the stud bolt is connected to a threaded nut (29) likewise comprising a tapered shoulder (30), the said shoulder (30) of the threaded nut (29) cooperating with a chamfer (31) of the bearing housing (7).
EP82105814A 1981-09-25 1982-06-30 Four-cylinder internal-combustion engine Expired EP0075659B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19813138165 DE3138165A1 (en) 1981-09-25 1981-09-25 "PISTON PISTON COMBUSTION MACHINE, PREFERABLY FOUR-CYLINDER DESIGN"
DE3138165 1981-09-25

Publications (3)

Publication Number Publication Date
EP0075659A2 EP0075659A2 (en) 1983-04-06
EP0075659A3 EP0075659A3 (en) 1983-08-03
EP0075659B1 true EP0075659B1 (en) 1986-01-29

Family

ID=6142576

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82105814A Expired EP0075659B1 (en) 1981-09-25 1982-06-30 Four-cylinder internal-combustion engine

Country Status (4)

Country Link
US (1) US4510898A (en)
EP (1) EP0075659B1 (en)
JP (1) JPS5868532A (en)
DE (2) DE3138165A1 (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4677948A (en) * 1986-05-29 1987-07-07 Chrysler Motors Corporation Lubricating system for an engine balancing device
US4703724A (en) * 1986-05-29 1987-11-03 Chrysler Motors Corporation Engine balancing device with a lubricant side discharge
US4703725A (en) * 1986-05-29 1987-11-03 Chrysler Motors Corporation Mounting of an engine balancing device
DE3626528C1 (en) * 1986-08-05 1988-02-25 Bayerische Motoren Werke Ag Adjustment device for a position-adjustable component of a tensioning device for a sleeve gear equipped with a gear element
FR2619881B1 (en) * 1987-08-31 1990-01-19 Peugeot BALANCING SHAFT FOR A RECIPROCATING PISTON ENGINE
JPH01114953U (en) * 1988-01-28 1989-08-02
DE3919503A1 (en) * 1989-06-15 1990-12-20 Daimler Benz Ag METHOD FOR ALIGNED FASTENING A COUNTERWEIGHT TO A CRANKSHAFT, AND TOOL FOR CARRYING OUT THE METHOD
DE4223780C2 (en) * 1992-07-18 1996-04-11 Bayerische Motoren Werke Ag Screw connection for a cylinder head of an internal combustion engine
DE10241883B4 (en) * 2002-09-10 2012-06-21 Andreas Stihl Ag & Co. Hand-held implement with a mounting pin for an exhaust silencer
AT7764U1 (en) 2003-12-02 2005-08-25 Magna Drivetrain Ag & Co Kg PISTON MACHINE WITH INTEGRATED BALANCING SHAFTS
DE102009041708A1 (en) * 2009-09-16 2011-03-24 GM Global Technology Operations, Inc., Detroit Screw pipe for cylinder head of internal combustion engine of vehicle, particularly motor vehicle, has area, where area is formed as truncated cone with base surface, cover surface and lateral area
US20140216390A1 (en) * 2010-11-23 2014-08-07 Jacob M. Wiebe Stud fasteners for fastening a cylinder head to an engine block and kit containing said stud fasteners
EP3686410B1 (en) * 2019-01-23 2023-05-24 Volvo Car Corporation A housing assembly
DE102019002996A1 (en) * 2019-04-25 2020-10-29 Deutz Aktiengesellschaft Crankcase with stepped stud bolt
EP3741485B1 (en) * 2019-05-20 2024-07-03 Andreas Stihl AG & Co. KG Work device and stud bolt for a work implement

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH220808A (en) * 1939-12-30 1942-04-30 Bechler Andre Device for axial screw connection of two cylindrical parts.
US3115356A (en) * 1960-05-31 1963-12-24 Ernest F Hohwart Self positioning accurately remountable dowell
US3245142A (en) * 1964-11-10 1966-04-12 Durabla Mfg Company Method of assembling low stress threaded connection
GB1231212A (en) * 1968-05-06 1971-05-12
DE1780504A1 (en) * 1968-09-23 1972-02-03 Kronprinz Ag Centering vehicle wheel fastening for one-piece wheel disks of vehicle wheels
JPS5175808A (en) * 1974-12-26 1976-06-30 Mitsubishi Motors Corp Enjinno baransakudosochi
DE2935384A1 (en) * 1979-09-01 1981-03-19 Daimler-Benz Ag, 7000 Stuttgart Internal combustion engine with a mass balance of second order

Also Published As

Publication number Publication date
JPS5868532A (en) 1983-04-23
EP0075659A3 (en) 1983-08-03
DE3138165A1 (en) 1983-04-14
DE3268790D1 (en) 1986-03-13
EP0075659A2 (en) 1983-04-06
US4510898A (en) 1985-04-16

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