EP0285598A1 - Moteur à combustion interne à injection - Google Patents
Moteur à combustion interne à injection Download PDFInfo
- Publication number
- EP0285598A1 EP0285598A1 EP88890055A EP88890055A EP0285598A1 EP 0285598 A1 EP0285598 A1 EP 0285598A1 EP 88890055 A EP88890055 A EP 88890055A EP 88890055 A EP88890055 A EP 88890055A EP 0285598 A1 EP0285598 A1 EP 0285598A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bearing
- camshaft
- cylinder
- rocker arm
- 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.)
- Granted
Links
Images
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, rocker arms being releasably attached to the cylinder head above the assigned camshaft for driving the pump nozzles.
- rocker arms are provided for driving the pump nozzles and are detachably attached to the cylinder head (see AT-PS 382 429), is among other things
- a single continuous bearing axis for all pump nozzle rocker arms there is a single continuous bearing axles for the pump nozzle rocker arm on machines with an overhead camshaft hinder work that is only to be carried out on the valves or on the valve train very much, because to remove the pump nozzle rocker arm their bearing axis must be removed from the cylinder head.
- assembly and disassembly of the pump nozzle rocker arms is quite difficult.
- all rocker arms must be reset when reassembling the cylinder head mechanism, which requires a lot of additional work.
- the aim of the invention is to avoid these disadvantages and to provide an internal combustion engine of the type mentioned in the introduction, in which the rocker arms actuating the pump nozzles and the pump nozzles can be removed and installed in a particularly simple manner.
- This aim is achieved according to the invention in that the cam for the rocker arms for actuating the pump nozzles is driven alternately for one cylinder from one camshaft and for the adjacent cylinder from the second camshaft, each rocker arm being individually fastened.
- 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 a 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 center of the camshafts 3 and 4.
- the lower bearing shells 11 of the camshaft bearings 12 are contained in the partition walls of the cylinder head 1.
- 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 is that these are provided alternately 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 a series design with an overhead camshaft 3 and two valves 2 and one pump nozzle 6 per cylinder.
- a cam 7 for driving a rocker arm 8 for the pump nozzle 6 and optionally rocker arms 5 for actuating the valves 2 are provided per cylinder.
- 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 fastened to the cylinder head 1.
- Two further valves 2 per cylinder and a second camshaft 4 are provided.
- the cam 7 is driven for the rocker arms 8 to actuate 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 attached individually.
- Each rocker arm 8 is secured above the assigned camshaft 3 or 4, for example by screws 14, for separate removal of only a single rocker arm 8 or its bearing from the valve train (2, 3, 4, 5) if necessary.
- the bearing axles 9 or bearing blocks for the rocker arms 8 are preferably releasably attached to the cylinder head 1 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 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 cam-shaft 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 have 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 of 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)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT690/87 | 1987-03-23 | ||
AT0069087A AT403944B (de) | 1987-03-23 | 1987-03-23 | Einspritzbrennkraftmaschine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0285598A1 true EP0285598A1 (fr) | 1988-10-05 |
EP0285598B1 EP0285598B1 (fr) | 1990-10-31 |
Family
ID=3497248
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP88890055A Expired - Lifetime EP0285598B1 (fr) | 1987-03-23 | 1988-03-15 | Moteur à combustion interne à injection |
Country Status (5)
Country | Link |
---|---|
US (1) | US4836171A (fr) |
EP (1) | EP0285598B1 (fr) |
AT (1) | AT403944B (fr) |
DE (1) | DE3860912D1 (fr) |
ES (1) | ES2003857B3 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2669375A1 (fr) * | 1990-11-19 | 1992-05-22 | Peugeot | Dispositif de commande par culbuteur de soupape d'un moteur a combustion interne. |
AT401408B (de) * | 1988-12-15 | 1996-09-25 | Avl Verbrennungskraft Messtech | Hubkolbenbrennkraftmaschine |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04121456A (ja) * | 1990-09-12 | 1992-04-22 | Nissan Motor Co Ltd | 直噴式ディーゼルエンジン |
DE4215051C2 (de) * | 1992-05-07 | 1997-05-28 | Audi Ag | Lageranordnung |
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 |
DE60119993T2 (de) | 2000-09-29 | 2007-01-04 | Edward Charles Mill Valley Mendler | Ventilsteuervorrichtung |
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 |
DE102017118862A1 (de) | 2017-08-18 | 2019-02-21 | Man Truck & Bus Ag | Vorrichtung zum drehbaren Lagern einer Nockenwelle |
Citations (3)
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 |
DE3615967A1 (de) * | 1985-05-22 | 1986-11-27 | AVL Gesellschaft für Verbrennungskraftmaschinen und Messtechnik mbH, Prof. Dr.Dr.h.c. Hans List, Graz | Brennkraftmaschine |
Family Cites Families (12)
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 |
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 |
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 |
-
1987
- 1987-03-23 AT AT0069087A patent/AT403944B/de not_active IP Right Cessation
-
1988
- 1988-03-15 EP EP88890055A patent/EP0285598B1/fr not_active Expired - Lifetime
- 1988-03-15 DE DE8888890055T patent/DE3860912D1/de not_active Expired - Lifetime
- 1988-03-15 ES ES88890055T patent/ES2003857B3/es not_active Expired - Lifetime
- 1988-03-21 US US07/171,439 patent/US4836171A/en not_active Expired - Fee Related
Patent Citations (3)
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 |
DE3615967A1 (de) * | 1985-05-22 | 1986-11-27 | AVL Gesellschaft für Verbrennungskraftmaschinen und Messtechnik mbH, Prof. Dr.Dr.h.c. Hans List, Graz | Brennkraftmaschine |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT401408B (de) * | 1988-12-15 | 1996-09-25 | Avl Verbrennungskraft Messtech | Hubkolbenbrennkraftmaschine |
FR2669375A1 (fr) * | 1990-11-19 | 1992-05-22 | Peugeot | Dispositif de commande par culbuteur de soupape d'un moteur a combustion interne. |
EP0487367A1 (fr) * | 1990-11-19 | 1992-05-27 | Automobiles Peugeot | Dispositif de commande par culbuteur de soupape d'un moteur à combustion interne |
Also Published As
Publication number | Publication date |
---|---|
US4836171A (en) | 1989-06-06 |
ES2003857B3 (es) | 1991-05-01 |
ES2003857A4 (es) | 1988-12-01 |
EP0285598B1 (fr) | 1990-10-31 |
DE3860912D1 (de) | 1990-12-06 |
ATA69087A (de) | 1997-11-15 |
AT403944B (de) | 1998-06-25 |
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