EP0285598B1 - Einspritzbrennkraftmaschine - Google Patents

Einspritzbrennkraftmaschine Download PDF

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Publication number
EP0285598B1
EP0285598B1 EP88890055A EP88890055A EP0285598B1 EP 0285598 B1 EP0285598 B1 EP 0285598B1 EP 88890055 A EP88890055 A EP 88890055A EP 88890055 A EP88890055 A EP 88890055A EP 0285598 B1 EP0285598 B1 EP 0285598B1
Authority
EP
European Patent Office
Prior art keywords
bearing
camshaft
rocker arms
injection
combustion engine
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
Application number
EP88890055A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0285598A1 (de
Inventor
Helmut Dipl.-Ing. Melde-Tuczai
Othmar Dipl.-Ing. Skatsche
Josef Dipl.-Ing. Rachholz
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.)
AVL List GmbH
Original Assignee
AVL Gesellschaft fuer Verbrennungskraftmaschinen und Messtechnik mbH
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 AVL Gesellschaft fuer Verbrennungskraftmaschinen und Messtechnik mbH filed Critical AVL Gesellschaft fuer Verbrennungskraftmaschinen und Messtechnik mbH
Publication of EP0285598A1 publication Critical patent/EP0285598A1/de
Application granted granted Critical
Publication of EP0285598B1 publication Critical patent/EP0285598B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F01L1/26—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of two or more valves operated simultaneously by same transmitting-gear; peculiar to machines or engines with more than two lift-valves per cylinder
    • 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
    • F01L1/047—Camshafts
    • F01L1/053—Camshafts overhead type
    • 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
    • F01L1/12—Transmitting gear between valve drive and valve
    • F01L1/18—Rocking arms or levers
    • 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
    • F02B2275/00—Other engines, components or details, not provided for in other groups of this subclass
    • F02B2275/18—DOHC [Double overhead camshaft]
    • 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
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
    • 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
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/24—Cylinder heads
    • F02F1/42—Shape or arrangement of intake or exhaust channels in cylinder heads
    • F02F1/4214—Shape or arrangement of intake or exhaust channels in cylinder heads specially adapted for four or more valves per cylinder
    • 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
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/24—Cylinder heads
    • F02F2001/244—Arrangement of valve stems in cylinder heads
    • F02F2001/247—Arrangement of valve stems in cylinder heads the valve stems being orientated in parallel with the cylinder axis
    • 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 or frames
    • F02F7/006—Camshaft or pushrod housings

Definitions

  • the invention relates to an injection internal combustion engine, in particular a diesel engine, with cylinders arranged in rows, with two overhead camshafts and four valves and a central pump nozzle per cylinder, with rocker arms releasably attached to the cylinder head above the assigned camshaft for driving the pump nozzles.
  • the aim of the invention is to avoid these disadvantages and to provide an internal combustion engine of the type described above, in which the rocker arms actuating the pump nozzles and the pump nozzles can be removed and installed in a particularly simple manner.
  • the rocker arm axis for the pump nozzle is placed on the bearing bracket from above.
  • the injection cams for the pump nozzle are located on the camshaft, only on every second cylinder and in such a way that they alternate from shaft to shaft, i.e. the cam on the left shaft actuates for the first cylinder and the one on the right shaft for the second cylinder, etc.
  • To remove the pump nozzle it is therefore sufficient if only one rocker arm axis is removed and not the bearing bracket as in US Pat. No. 2,024,334.
  • a very easy removal of the rocker arms together with storage is achieved according to a further preferred embodiment of the invention in that for the individual fastening of the rocker arms one of the camshaft bearings, e.g. is provided by screws, separately releasably attached bearing part for receiving the bearing axis for a rocker arm for driving a pump nozzle.
  • a particularly economical fastening and mounting option for the rocker arms for driving the pump nozzle results from the fact that the bearing axles used for the individual fastening of the rocker arms extend in the longitudinal direction of the machine only over two adjacent bearing parts for each of the two camshafts.
  • valves 2 per cylinder are actuated in the cylinder head 1 by two overhead camshafts 3 and 4 via rocker arms 5.
  • a pump nozzle 6 is driven by an injection cam 7 of the camshaft 3 or 4 via a rocker arm 8.
  • the rocker arm 8 is arranged on a rocker arm bearing having a bearing axis 9 and bearing parts 10.
  • the upper edge of the cylinder head 1 extends to the middle of the camshafts 3 and 4.
  • the lower bearing shells 11 of the camshaft bearings 12 are included in the partition walls of the cylinder head 1, the lower bearing shells 11 of the camshaft bearings 12 are included.
  • the bearing parts 10 are designed so that they receive the upper bearing shells 13 of the camshaft bearings 12.
  • rocker arm drive 7, 8, 9 and thus also the camshaft bearings 12 in the illustrated machine are alternately provided once on the right and once on the left side of the cylinder head 1.
  • the pump nozzle 6 is driven alternately once by the right and once by the left camshaft 3 or 4, corresponding to the entire rocker arm arrangement (FIG. 2).
  • the injection internal combustion engine according to the invention is therefore, in particular, a diesel engine in series with an overhead camshaft 3 and two valves 2 and one pump nozzle 6 per cylinder.
  • An injection cam 7 is provided per cylinder for driving a rocker arm 8 for the pump nozzle 6 and, if necessary, rocker arms 5 for actuating the valves 2.
  • the bearing axis 9 of the rocker arms 8 is arranged on the upper bearing half of the camshaft 3 and the rocker arms 8 themselves or their bearing axes 9 are detachably attached to the cylinder head 1.
  • Two further valves 2 per cylinder and a second camshaft 4 are provided.
  • the injection cam 7 is driven for the rocker arms 8 for actuating the pump nozzles 6 alternately for one cylinder from one camshaft 3 and for the adjacent cylinder from the other camshaft 4, each rocker arm 8 being individually fastened.
  • each rocker arm 8 is above the assigned camshaft 3 or 4, e.g. secured by screws 14 for a separate removal of only a single rocker arm 8 or its bearing from the valve train (2, 3, 4, 5) if necessary.
  • the releasable attachment of the bearing axles 9 or bearing blocks for the rocker arms 8 to the cylinder head 1 is carried out by screws 14, which at the same time serve to anchor the bearing parts 10 designed as brackets for the camshafts 3 and 4.
  • the bearing 12 for the camshaft 3 or 4 has at least one, e.g. by screws, detachably fastened separate bearing part (not shown) for receiving the bearing axis 9 for a rocker arm 8 for driving a pump nozzle 6.
  • the rocker arm 8 is actuated at one end by the injection cam 7 via a pressure roller 24.
  • the pressure roller 24 is mounted on the rocker arm 8 by means of an axis 25.
  • the rocker arm 8 is connected to the tappet 15 of the pump nozzle 6 by a screw connection 16.
  • cams 26 Arranged on each camshaft 3 and 4 are cams 26 which serve to drive the rocker arms 5 actuating the valves 2.
  • the rocker arms 5 are fixed to the cylinder head 1 by a screw connection 18.
  • a further screw 17 is provided for fastening the bearing part 10 to the cylinder head 1 for each camshaft bearing 12.
  • the cylinder head cover is designated 19.
  • rocker arm bearings rocker arm 8, bearing axis 9
  • camshaft bearings bearing part 10
  • valve 3 shows the pair of valves assigned to the camshaft 4.
  • This pair of valves consists of two valves 2, each having a valve plate 22, a valve stem 23 and a spring plate 20.
  • the valve springs indicated by dash-dotted lines are designated by 21.
  • the particular advantage of the illustrated embodiment according to the invention is that only one rocker arm bearing axis 9 has to be removed in order to be able to remove a specific pump nozzle 6, while the two camshafts 3 and 4 and the entire remaining valve train remain in the installed position.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
EP88890055A 1987-03-23 1988-03-15 Einspritzbrennkraftmaschine Expired - Lifetime EP0285598B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0069087A AT403944B (de) 1987-03-23 1987-03-23 Einspritzbrennkraftmaschine
AT690/87 1987-03-23

Publications (2)

Publication Number Publication Date
EP0285598A1 EP0285598A1 (de) 1988-10-05
EP0285598B1 true EP0285598B1 (de) 1990-10-31

Family

ID=3497248

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88890055A Expired - Lifetime EP0285598B1 (de) 1987-03-23 1988-03-15 Einspritzbrennkraftmaschine

Country Status (5)

Country Link
US (1) US4836171A (es)
EP (1) EP0285598B1 (es)
AT (1) AT403944B (es)
DE (1) DE3860912D1 (es)
ES (1) ES2003857B3 (es)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4215051A1 (de) * 1992-05-07 1993-11-11 Audi Ag Lageranordnung
DE102017118862A1 (de) 2017-08-18 2019-02-21 Man Truck & Bus Ag Vorrichtung zum drehbaren Lagern einer Nockenwelle

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT401408B (de) * 1988-12-15 1996-09-25 Avl Verbrennungskraft Messtech Hubkolbenbrennkraftmaschine
JPH04121456A (ja) * 1990-09-12 1992-04-22 Nissan Motor Co Ltd 直噴式ディーゼルエンジン
FR2669375A1 (fr) * 1990-11-19 1992-05-22 Peugeot Dispositif de commande par culbuteur de soupape d'un moteur a combustion interne.
JP3077738B2 (ja) * 1994-04-28 2000-08-14 株式会社デンソー 高圧サプライポンプ
US5829414A (en) * 1994-09-26 1998-11-03 Honda Giken Kogyo Kabushiki Kaisha Fuel supply system for multi-cylinder engine
US5507261A (en) * 1995-05-12 1996-04-16 Caterpillar Inc. Four cycle engine with two cycle compression braking system
US5806499A (en) 1997-03-18 1998-09-15 Cummins Engine Company, Inc. Dedicated overhead cam shaft for unit injector
DE19752381A1 (de) * 1997-11-26 1999-05-27 Volkswagen Ag Zylinderkopf für eine Brennkraftmaschine mit Pumpedüse-Einheit
US7146949B2 (en) 2000-09-29 2006-12-12 Edward Charles Mendler Valve control apparatus
US6405707B1 (en) 2000-12-18 2002-06-18 Caterpillar Inc. Integral engine and engine compression braking HEUI injector
CN107614857A (zh) * 2015-05-25 2018-01-19 日产自动车株式会社 内燃机

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2024334A (en) * 1933-03-17 1935-12-17 Gen Motors Corp Valve mechanism for internal combustion engines

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR820143A (fr) * 1936-07-08 1937-11-04 Perfectionnements aux moteurs à combustion et à explosions
FR1076310A (fr) * 1953-03-09 1954-10-26 Maybach Motorenbau Gmbh Dispositif pour la mise au point et le réglage d'injecteurs de moteurs à combustion interne à cylindres en ligne, notamment pour véhicules automobiles
US4068630A (en) * 1975-12-12 1978-01-17 General Motors Corporation Engine with noise reducing exhaust valve arrangement
DE2809157A1 (de) * 1978-03-03 1979-09-06 Daimler Benz Ag Zylinderkopf fuer eine gemischverdichtende brennkraftmaschine
AT382429B (de) * 1979-09-28 1987-02-25 List Hans Einspritzbrennkraftmaschine
US4441166A (en) * 1982-05-24 1984-04-03 International Business Machines Corporation Passive annihilator for contiguous-disk bubble devices
JPS5946310A (ja) * 1982-09-10 1984-03-15 Mazda Motor Corp エンジンのバルブタイミング制御装置
AT391165B (de) * 1984-05-22 1990-08-27 Steyr Daimler Puch Ag Nockentrieb fuer eine luftverdichtende, selbstzuendende hubkolben-brennkraftmaschine
JPH0646005B2 (ja) * 1984-06-12 1994-06-15 ヤマハ発動機株式会社 動弁用カム軸の軸受構造
US4741302A (en) * 1984-12-10 1988-05-03 Mazda Motor Corporation Internal combustion engine
JPS61261612A (ja) * 1985-05-14 1986-11-19 Honda Motor Co Ltd 内燃機関の油圧タペツト付動弁機構における給油装置
AT394249B (de) * 1985-05-22 1992-02-25 Avl Verbrennungskraft Messtech Brennkraftmaschine
JPS62159762A (ja) * 1986-01-08 1987-07-15 Honda Motor Co Ltd デイ−ゼルエンジン
GB9103596D0 (en) * 1991-02-21 1991-04-10 Vickers Plc Bearing housing assembly

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2024334A (en) * 1933-03-17 1935-12-17 Gen Motors Corp Valve mechanism for internal combustion engines

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4215051A1 (de) * 1992-05-07 1993-11-11 Audi Ag Lageranordnung
DE102017118862A1 (de) 2017-08-18 2019-02-21 Man Truck & Bus Ag Vorrichtung zum drehbaren Lagern einer Nockenwelle
EP3842622A1 (de) 2017-08-18 2021-06-30 MAN Truck & Bus SE Vorrichtung zum drehbaren lagern einer nockenwelle

Also Published As

Publication number Publication date
AT403944B (de) 1998-06-25
ATA69087A (de) 1997-11-15
EP0285598A1 (de) 1988-10-05
ES2003857B3 (es) 1991-05-01
ES2003857A4 (es) 1988-12-01
DE3860912D1 (de) 1990-12-06
US4836171A (en) 1989-06-06

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