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EP0062875A1 - Internal-combustion engine with an auxiliary apparatus - Google Patents

Internal-combustion engine with an auxiliary apparatus Download PDF

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Publication number
EP0062875A1
EP0062875A1 EP82102903A EP82102903A EP0062875A1 EP 0062875 A1 EP0062875 A1 EP 0062875A1 EP 82102903 A EP82102903 A EP 82102903A EP 82102903 A EP82102903 A EP 82102903A EP 0062875 A1 EP0062875 A1 EP 0062875A1
Authority
EP
European Patent Office
Prior art keywords
cylinder head
combustion engine
vacuum pump
head cover
internal combustion
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.)
Granted
Application number
EP82102903A
Other languages
German (de)
French (fr)
Other versions
EP0062875B1 (en
Inventor
Joachim Ing. Grad. Hahn
Hans Gibisch
Waldemar Dipl.-Ing. Jende
Richard Ing. Grad. Henning
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.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke 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 Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Priority to AT82102903T priority Critical patent/ATE8290T1/en
Publication of EP0062875A1 publication Critical patent/EP0062875A1/en
Application granted granted Critical
Publication of EP0062875B1 publication Critical patent/EP0062875B1/en
Expired legal-status Critical Current

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Classifications

    • 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
    • F02B77/00—Component parts, details or accessories, not otherwise provided for
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F7/00—Casings, e.g. crankcases
    • F02F7/006—Camshaft or pushrod housings

Definitions

  • the invention relates to an internal combustion engine of the type according to the preamble of claim 1.
  • the invention has for its object to provide an internal combustion engine of the type described in the preamble of claim 1, in which - in particular also with an acoustic decoupling of the cylinder head cover and cylinder head - the drive of the ancillary unit is as free of play as possible and nevertheless simple assembly thereof is ensured.
  • the construction according to the invention makes it possible to attach the auxiliary unit to the cylinder head before fitting the cylinder head cover and to keep the drive connection between the valve train and the drive of the auxiliary unit largely free of play. Then the cylinder head cover can be simply slipped over the auxiliary unit, with only a part of the same, the z. B. carries a connector, protrudes from the cylinder head cover. The seal provided avoids metallic contact between the auxiliary unit and the cylinder head cover, which is particularly important when the cylinder head and the cylinder head cover are acoustically decoupled.
  • a development of the invention is characterized in which only a line connection protrudes through the cylinder head cover, the position of which has large dimensional tolerances is compensated for by the large-volume, rubber-elastic sealing ring.
  • a vacuum pump 3 is arranged in the valve chamber 1 in the cylinder head 2 of an internal combustion engine (not shown).
  • the vacuum pump 3 is designed as a diaphragm pump. It is firmly screwed to the cylinder head 2 and its tappet 4 is driven by an eccentric 5 of the camshaft 6. Part of the vacuum pump 3 protrudes through a through opening 7 in the cylinder head cover 8 to the outside. In the area of the passage opening 7, the vacuum pump 3 is provided on the circumference with a groove 9 in which an O-ring 10 is arranged. The 0-ring 10 forms a seal between the edge of the through opening 7 and the vacuum pump 3.
  • the cylinder head cover 8 is supported on the cylinder head 2 by a circumferential seal 11 arranged in a groove and is connected to the cylinder head 2 via a vibration-insulated screw connection (not shown) attached.
  • the part of the vacuum pump 3 which projects outward through the through opening 7 carries a connecting piece 12.
  • the vacuum pump 103 is designed as a vane pump and is likewise firmly connected to the cylinder head 102.
  • the vacuum pump 103 is driven by the camshaft 106 via helical gears 113 and 114.
  • the cylinder head cover 108 is provided with a bulge 115, at the highest point of which a through opening 107 is arranged.
  • a connection piece protrudes through this through opening 107 112 of the vacuum pump 103.
  • Between the edge of the through hole 107 and the connecting sleeve 112 is aromevolu - arranged miger 0-ring 110 as a seal so that a gg f. existing vibration insulation between cylinder head cover 108 and cylinder head 102 is not affected.
  • the vacuum pumps 3 and 103 are attached to the cylinder head 2 and 102, respectively. After mounting the vacuum pump 3 or 103 in the valve chamber 1 or 101, the cylinder head cover 8 or 108 can simply be put over. As a result, the cylinder head cover 8 or 108 can be easily removed for adjusting the valve clearance without the drive of the vacuum pump 3 or 103 or the vacuum pump 3 or 103 itself having to be released.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Passenger Equipment (AREA)
  • Combustion Methods Of Internal-Combustion Engines (AREA)

Abstract

An internal combustion engine which includes a secondary aggregate or unit such as, for example, a vacuum pump, located inside of a valve housing which is formed by a cylinder head and a cylinder head cover. A portion of the vacuum pump, for example, a connecting portion for a vacuum line leading to a consumer, extends outwardly through an opening or passage and forms a seal with the cylinder head cover.

Description

Die Erfindung bezieht sich auf eine Brennkraftmaschine der Bauart nach dem Oberbegriff des Anspruches 1.The invention relates to an internal combustion engine of the type according to the preamble of claim 1.

Bei bekannten Brennkraftmaschinen dieser Bauart (DE-AS 12 91 931 und 12 91 932) ist jeweils in der Ventilkammer eine Luftpumpe zur Erzeugung von Zusatzluft zur Abgasentgiftung angeordnet. Die Zylinderkopfhaube bildet dabei jeweils selbst einen Teil dieser Pumpen. Je ein besonders ausgestalteter Kipphebel betätigt sowohl ein Ventil als auch die Pumpe. Dadurch ergeben sich zusätzliche Belastungen der Kipphebel und Ventilfedern.In known internal combustion engines of this type (DE-AS 12 91 931 and 12 91 932), an air pump for generating additional air for exhaust gas detoxification is arranged in the valve chamber. The cylinder head cover itself forms part of these pumps. A specially designed rocker arm actuates both a valve and the pump. This results in additional loads on the rocker arms and valve springs.

Ferner ist es bekannt (DE-OS 24 37 946), Nebenaggregate, wie Luftpresser, Brennstoff-Förderpumpen und Einspritzpumpen, die von außen an den Zylinderkopf angebaut sind, mittels einer obenliegenden Nockenwelle anzutreiben. Dabei liegen jedoch die Nebenaggregate frei, sind der Verschmutzung ausgesetzt und tragen zur Geräuschentwicklung der Maschine bei.It is also known (DE-OS 24 37 946) to drive auxiliary units, such as air compressors, fuel delivery pumps and injection pumps, which are attached to the cylinder head from the outside, by means of an overhead camshaft. However, the auxiliary units are exposed, are exposed to dirt and contribute to the noise of the machine.

Der Erfindung liegt die Aufgabe zugrunde, eine Brennkraftmaschine der im Oberbegriff des Anspruches 1 beschriebenen Bauart zu schaffen, bei der - insbesondere auch bei einer akustischen Entkoppelung von Zylinderkopfhaube und Zylinderkopf - ein möglichst spielfreier Antrieb des Nebenaggregates und trotzdem eine einfache Montage desselben gewährleistet ist.The invention has for its object to provide an internal combustion engine of the type described in the preamble of claim 1, in which - in particular also with an acoustic decoupling of the cylinder head cover and cylinder head - the drive of the ancillary unit is as free of play as possible and nevertheless simple assembly thereof is ensured.

Diese Aufgabe löst die Erfindung mit den kennzeichnenden Merkmalen des Anspruches 1. Durch den erfindungsgemäßen Aufbau ist es möglich, das Nebenaggregat vor dem Aufsetzen der Zylinderkopfhaube am Zylinderkopf zu befestigen und die Antriebsverbindung zwischen dem Ventiltrieb und dem Antrieb des Nebenaggregates weitgehend spielfrei zu halten. Danach kann die Zylinderkopfhaube einfach über das Nebenaggregat gestülpt werden, wobei lediglich ein Teil desselben, das z. B. einen Anschlußstutzen trägt, aus der Zylinderkopfhaube herausragt. Die vorgesehene Dichtung vermeidet eine metallische Berührung zwischen Nebenaggregat und Zylinderkopfhaube, was insbesondere bei einer akustischen Entkoppelung von Zylinderkopf und Zylinderkopfhaube wichtig ist.This object is achieved by the invention with the characterizing features of claim 1. The construction according to the invention makes it possible to attach the auxiliary unit to the cylinder head before fitting the cylinder head cover and to keep the drive connection between the valve train and the drive of the auxiliary unit largely free of play. Then the cylinder head cover can be simply slipped over the auxiliary unit, with only a part of the same, the z. B. carries a connector, protrudes from the cylinder head cover. The seal provided avoids metallic contact between the auxiliary unit and the cylinder head cover, which is particularly important when the cylinder head and the cylinder head cover are acoustically decoupled.

Im Anspruch 2 ist eine Weiterbildung der Erfindung gekennzeichnet, bei der ausschließlich ein Leitungsanschluß durch die Zylinderkopfhaube ragt, deren große Maßtoleranzen aufweisende Lage durch den großvolumigen gummielastischen Dichtring ausgeglichen wird.In claim 2, a development of the invention is characterized in which only a line connection protrudes through the cylinder head cover, the position of which has large dimensional tolerances is compensated for by the large-volume, rubber-elastic sealing ring.

Im folgenden wird die Erfindung anhand zweier in der Zeichnung dargestellter Ausführungsbeispiele erläutert. Es zeigt:

  • Fig. 1 einen Teilquerschnitt des Zylinderkopfes einer Brennkraftmaschine mit einer exzenter-/stößelgetriebenen Vakuumpumpe als Nebenaggregat und
  • Fig. 2 einen Teillängsschnitt des Zylinderkopfes einer Brennkraftmaschine mit einer zahnradgetriebenen Vakuumpumpe als Nebenaggregat.
The invention is explained below with reference to two exemplary embodiments shown in the drawing. It shows:
  • Fig. 1 shows a partial cross section of the cylinder head of an internal combustion engine with an eccentric / tappet-driven vacuum pump as an auxiliary unit and
  • Fig. 2 shows a partial longitudinal section of the cylinder head of an internal combustion engine with a gear-driven vacuum pump as an auxiliary unit.

In der Ventilkammer 1 im Zylinderkopf 2 einer nicht weiter dargestellten Brennkraftmaschine ist als Nebenaggregat eine Vakuumpumpe 3 angeordnet. Die Vakuumpumpe 3 ist als Membranpumpe ausgebildet. Sie ist fest mit dem Zylinderkopf 2 verschraubt und ihr Stößel 4 wird durch einen Exzenter 5 der Nockenwelle 6 angetrieben. Ein Teil der Vakuumpumpe 3 ragt durch eine Durchgangsöffnung 7 in der Zylinderkopfhaube 8 nach außen. Im Bereich der Durchgangsöffnung 7 ist die Vakuumpumpe 3 am Umfang mit einer Nut 9 versehen, in der ein 0-Ring 10 angeordnet ist. Der 0-Ring 10 bildet eine Dichtung zwischen dem Rand der Durchgangsöffnung 7 und der Vakuumpumpe 3. Die Zylinderkopfhaube 8 stützt sich über eine umlaufende, in einer Nut angeordnete Dichtung 11 auf dem Zylinderkopf 2 ab und ist über eine nicht dargestellte schwingungsisolierte Schraubverbindung am Zylinderkopf 2 befestigt. Der durch die Durchgangsöffnung 7 nach außen ragende Teil der Vakuumpumpe 3 trägt einen Anschlußstutzen 12.A vacuum pump 3 is arranged in the valve chamber 1 in the cylinder head 2 of an internal combustion engine (not shown). The vacuum pump 3 is designed as a diaphragm pump. It is firmly screwed to the cylinder head 2 and its tappet 4 is driven by an eccentric 5 of the camshaft 6. Part of the vacuum pump 3 protrudes through a through opening 7 in the cylinder head cover 8 to the outside. In the area of the passage opening 7, the vacuum pump 3 is provided on the circumference with a groove 9 in which an O-ring 10 is arranged. The 0-ring 10 forms a seal between the edge of the through opening 7 and the vacuum pump 3. The cylinder head cover 8 is supported on the cylinder head 2 by a circumferential seal 11 arranged in a groove and is connected to the cylinder head 2 via a vibration-insulated screw connection (not shown) attached. The part of the vacuum pump 3 which projects outward through the through opening 7 carries a connecting piece 12.

Bei dem in Fig. 2 dargestellten Ausführungsbeispiel ist die Vakuumpumpe 103 als Flügelzellenpumpe ausgebildet und ebenfalls fest mit dem Zylinderkopf 102 verbunden. Die Vakuumpumpe 103 wird von der Nockenwelle 106 über schrägverzahnte Zahnräder 113 und 114 angetrieben. Die Zylinderkopfhaube 108 ist mit einer Ausbuchtung 115 versehen, an deren höchster Stelle eine Durchgangsöffnung 107 angeordnet ist. Durch diese Durchgangsöffnung 107 ragt ein Anschlußstutzen 112 der Vakuumpumpe 103. Zwischen dem Rand der Durchgangsöffnung 107 und dem Anschlußstutzen 112 ist ein großvolu- miger 0-Ring 110 als Dichtung angeordnet, so daß eine ggf. vorhandene Schwingungsisolierung zwischen Zylinderkopfhaube 108 und Zylinderkopf 102 nicht beeinträchtigt wird.In the exemplary embodiment shown in FIG. 2, the vacuum pump 103 is designed as a vane pump and is likewise firmly connected to the cylinder head 102. The vacuum pump 103 is driven by the camshaft 106 via helical gears 113 and 114. The cylinder head cover 108 is provided with a bulge 115, at the highest point of which a through opening 107 is arranged. A connection piece protrudes through this through opening 107 112 of the vacuum pump 103. Between the edge of the through hole 107 and the connecting sleeve 112 is a großvolu - arranged miger 0-ring 110 as a seal so that a gg f. existing vibration insulation between cylinder head cover 108 and cylinder head 102 is not affected.

Bei beiden Ausführungsbeispielen sind die Vakuumpumpen 3 und 103 am Zylinderkopf 2 bzw. 102 befestigt. Nach der Montage der Vakuumpumpe 3 bzw. 103 in der Ventilkammer 1 bzw. 101 kann die Zylinderkopfhaube 8 bzw. 108 einfach übergestülpt werden. Dadurch kann die Zylinderkopfhaube 8 bzw. 108 zur Einstellung des Ventilspieles einfach abgenommen werden, ohne daß der Antrieb der Vakuumpumpe 3 oder 103 bzw. die Vakuumpumpe 3 bzw. 103 selbst gelöst werden muß.In both embodiments, the vacuum pumps 3 and 103 are attached to the cylinder head 2 and 102, respectively. After mounting the vacuum pump 3 or 103 in the valve chamber 1 or 101, the cylinder head cover 8 or 108 can simply be put over. As a result, the cylinder head cover 8 or 108 can be easily removed for adjusting the valve clearance without the drive of the vacuum pump 3 or 103 or the vacuum pump 3 or 103 itself having to be released.

Claims (2)

1. Brennkraftmaschine - mit einem innerhalb einer Ventilkammer angeordneten und mittels eines Antriebsteiles des Ventiltriebes angetriebenen Nebenaggregat, - das am Zylinderkopf der Brennkraftmaschine befestigt ist,
dadurch gekennzeichnet, - daß das Nebenaggregat eine Vakuumpumpe (103) ist und - daß eine die Ventilkammer (101) abdeckende Zylinderkopfhaube (108) eine Durchgangsöffnung (107) aufweist, - durch die ein Anschlußstutzen (112) der Vakuumpumpe (103) in dichtendem Eingriff mit der Zylinderkopfhaube (108) hindurchragt. 1. Internal combustion engine with an auxiliary unit arranged within a valve chamber and driven by means of a drive part of the valve drive, - which is attached to the cylinder head of the internal combustion engine,
characterized, - That the auxiliary unit is a vacuum pump (103) and - That a cylinder head cover (108) covering the valve chamber (101) has a through opening (107), - Through which a connection piece (112) of the vacuum pump (103) projects in sealing engagement with the cylinder head cover (108). 2. Brennkraftmaschine nach Anspruch 1, dadurch gekennzeichnet, - daß zwischen einer Bundfläche und dem Außenumfang des Anschlußstutzens (112) einerseits und der Innenbegrenzung der Durchgangsöffnung (107) andererseits ein großvolumiger Dichtring (0-Ring 110) aus gummielastischem Material angeordnet ist. 2. Internal combustion engine according to claim 1, characterized in - That between a collar surface and the outer circumference of the connecting piece (112) on the one hand and the inner boundary of the through opening (107) on the other hand, a large-volume sealing ring (0-ring 110) made of rubber-elastic material is arranged.
EP82102903A 1981-04-10 1982-04-05 Internal-combustion engine with an auxiliary apparatus Expired EP0062875B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82102903T ATE8290T1 (en) 1981-04-10 1982-04-05 ENGINE WITH AN AUXILIARY UNIT.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3114690 1981-04-10
DE19813114690 DE3114690A1 (en) 1981-04-10 1981-04-10 INTERNAL COMBUSTION ENGINE WITH A SUB-UNIT

Publications (2)

Publication Number Publication Date
EP0062875A1 true EP0062875A1 (en) 1982-10-20
EP0062875B1 EP0062875B1 (en) 1984-07-04

Family

ID=6129942

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82102903A Expired EP0062875B1 (en) 1981-04-10 1982-04-05 Internal-combustion engine with an auxiliary apparatus

Country Status (5)

Country Link
US (1) US4444162A (en)
EP (1) EP0062875B1 (en)
JP (1) JPS57179497A (en)
AT (1) ATE8290T1 (en)
DE (2) DE3114690A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1384859A3 (en) * 2002-07-23 2008-10-22 Honda Giken Kogyo Kabushiki Kaisha Engine

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2531791Y2 (en) * 1990-10-09 1997-04-09 十條セントラル株式会社 Flanged container carrier
JP6111697B2 (en) * 2013-01-30 2017-04-12 スズキ株式会社 Engine negative pressure supply device
JP6070231B2 (en) * 2013-02-01 2017-02-01 スズキ株式会社 Vacuum pump mounting structure

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2955582A (en) * 1957-06-21 1960-10-11 Gen Motors Corp Timed fuel injection system
DE1291932B (en) * 1966-01-24 1969-04-03 Ford Motor Co Pump device for generating additional air for exhaust gas detoxification of piston internal combustion engines with valve control for the combustion chambers
DE1291931B (en) * 1966-01-24 1969-04-03 Ford Motor Co Pump device for generating additional air for the exhaust gas detoxification of piston internal combustion engines
DE2437946A1 (en) * 1974-08-07 1976-02-26 Josef Dr Ing Reisacher PISTON ENGINE WITH REDUCED DRIVING CONSUMPTION, IN PARTICULAR FOR DRIVING PASSENGER CARS

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE443328C (en) * 1924-08-01 1927-04-26 Hirschmann Radiotechnik Compressorless diesel engine
CA1049870A (en) * 1974-11-26 1979-03-06 International Harvester Company Internal combustion engine with sound proofing cowling
GB1534790A (en) * 1975-08-08 1978-12-06 Isuzu Motors Ltd V-type internal combustion engine
US4054108A (en) * 1976-08-02 1977-10-18 General Motors Corporation Internal combustion engine
WO1981001593A1 (en) * 1979-11-30 1981-06-11 S Hanshaw Rocker arm driven fuel pump

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2955582A (en) * 1957-06-21 1960-10-11 Gen Motors Corp Timed fuel injection system
DE1291932B (en) * 1966-01-24 1969-04-03 Ford Motor Co Pump device for generating additional air for exhaust gas detoxification of piston internal combustion engines with valve control for the combustion chambers
DE1291931B (en) * 1966-01-24 1969-04-03 Ford Motor Co Pump device for generating additional air for the exhaust gas detoxification of piston internal combustion engines
DE2437946A1 (en) * 1974-08-07 1976-02-26 Josef Dr Ing Reisacher PISTON ENGINE WITH REDUCED DRIVING CONSUMPTION, IN PARTICULAR FOR DRIVING PASSENGER CARS

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1384859A3 (en) * 2002-07-23 2008-10-22 Honda Giken Kogyo Kabushiki Kaisha Engine

Also Published As

Publication number Publication date
DE3260323D1 (en) 1984-08-09
JPS6249457B2 (en) 1987-10-20
DE3114690A1 (en) 1982-10-28
JPS57179497A (en) 1982-11-05
US4444162A (en) 1984-04-24
EP0062875B1 (en) 1984-07-04
ATE8290T1 (en) 1984-07-15

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