WO1997024514A1 - Brennkraftmaschine mit einem nockenantrieb - Google Patents
Brennkraftmaschine mit einem nockenantrieb Download PDFInfo
- Publication number
- WO1997024514A1 WO1997024514A1 PCT/DE1996/001584 DE9601584W WO9724514A1 WO 1997024514 A1 WO1997024514 A1 WO 1997024514A1 DE 9601584 W DE9601584 W DE 9601584W WO 9724514 A1 WO9724514 A1 WO 9724514A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- bore
- roller
- combustion engine
- lubricant
- internal combustion
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M9/00—Lubrication means having pertinent characteristics not provided for in, or of interest apart from, groups F01M1/00 - F01M7/00
- F01M9/10—Lubrication of valve gear or auxiliaries
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M9/00—Lubrication means having pertinent characteristics not provided for in, or of interest apart from, groups F01M1/00 - F01M7/00
- F01M9/10—Lubrication of valve gear or auxiliaries
- F01M9/107—Lubrication of valve gear or auxiliaries of rocker shaft bearings
-
- 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
- F01L1/181—Centre pivot rocking arms
-
- 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
- F01L2305/00—Valve arrangements comprising rollers
Definitions
- the invention is based on an internal combustion engine according to the preamble of claim 1.
- each cylinder of the internal combustion engine to be supplied has a separate one
- Associated fuel injector This is controlled via a cam drive that has a rocker arm that can be pivoted about a fixed bearing point. Upstream of this rocker arm is a roller running on a cam track of a camshaft, which transmits lifting and lowering movements to a drive part which is operatively connected to the fuel injection device.
- the internal combustion engine according to the invention with the characterizing features of patent claim 1 has the advantage that a roller mounted in the rocker arm can be supplied with lubricant through a bore arranged in the roller bolt through a lubricant nozzle arranged in the region of a curved path of the roller.
- lubricant can be absorbed at least at the point in time at which the roller bolt mounted in the rocker arm passes a lubricant supply point.
- the lubricant is advantageously sprayed in the direction of the bearing point, so that lubricant particles can get into the bore and thus between the roller and roller pin for lubrication.
- a lubricant supply can contribute to the lubrication of the roller pin to the rocker arm in the case of a rotatably mounted roller pin.
- a roller pin on a rocker arm is provided for a rotationally fixed bearing in such a way that the radially extending transverse bore is arranged so as to point away from the cam track, so that lubricant can be reliably supplied to the bearing point.
- At least one transverse bore completely penetrating the roller bolt is provided in the case of a rotatably mounted roller bolt.
- the bore in the roller bolt facing the lubricant supply device has a funnel-shaped opening.
- the lubricant supply device can be arranged in an area in which the roller passes through a bottom dead center position of the cam track. In this position there is the lowest bearing load between the roller and roller conveyor, so that the lubricant supplied can have a better distribution between the roller and the roller pin.
- the lubricant supply according to the invention on a cam drive can be used on fuel injection devices or also on the drive of gas exchange valves of the internal combustion engine.
- FIG. 1 shows a schematic side view of a cam drive according to the invention of an internal combustion engine
- FIG. 2 shows a schematic section along the line II-II in FIG. 1 with a lubricant supply device
- FIG. 3 shows a sectional view of a roller bolt that rotates in the rocker arm 4 shows an alternative embodiment of a roller bolt to FIG. 3
- FIG. 5 shows a cross section of a roller bolt which is rotatably mounted in the rocker arm
- FIG. 6 shows a schematic view of a lubricant supply device arranged between two cam drives.
- FIG. 1 shows a section of a cylinder head of an internal combustion engine which has a cam drive 11, only the parts essential to the invention being shown.
- a rotating camshaft 12 with a cam 13 having a cam track is arranged inside the cylinder head of the internal combustion engine. This actuates via a roller 14 running on the cam track a rocker arm 16, which is mounted in a rotationally fixed manner to the cylinder head via a bearing 17.
- the rocker arm 16 is arranged pivotably about the bearing axis 18 and actuated via a Drive part 19 a pump nozzle 21.
- Such a cam drive 11 can also serve to drive valve controls, pump pistons or the like.
- the roller 14 is mounted on a roller pin 22 so as to be rotatable about an axis of rotation 23 which at the same time forms a longitudinal axis of the roller pin 22.
- the roller pin 22 can be rotationally fixed in the application or freely rotatably mounted in the rocker arm 16.
- FIG. 2 shows a schematic sectional illustration along the line II-II in FIG. 1.
- a lubricant supply device 26 is arranged opposite an end face 24 of the roller bolt 22. This lubricant supply device 26 can be connected to a lubricant supply channel 27 of a lubricant circuit.
- the lubricant supply device 26 is formed by a screw bolt 28 with a central bore 29 and a transverse bore 31, lubricant being able to be supplied via the bores 29, 31 to a lubricant nozzle 32 which is arranged in a sleeve 33.
- the lubricant nozzle 32 is arranged at a short distance from the end face 24 of the roller pin 22, so that when the lubricant is sprayed, a large amount of lubricant can be fed to a bore 30 arranged in the roller pin 22.
- the bore 30 has a bore section 34 which is arranged in the bearing axis 23 of the roller pin 22.
- the bore section 34 has a funnel-shaped opening 36 so that when driving over the lubricant nozzle 32 during a stroke movement, the greatest possible amount of lubricant can get into the bore section 34 and can reach the bearing point between the roller 14 and the roller pin 22 via a transverse bore 37.
- the bore portion 34 is designed as a blind hole according to this embodiment.
- the lubricant is advantageously sprayed through a nozzle 32, so that a spray field striking the end face 24 essentially has a diameter of the funnel-shaped opening 36. This can give an optimal supply of lubricant.
- the lubricant supply device 26 can be arranged in one plane of a path of the bore 30 in the region of the entire continuous stroke movement.
- the arrangement of the lubricant nozzle 32 at the bottom dead center of the cam track is particularly advantageous. As a result, the load between the roller 14 and the roller pin 22 is the least, which can result in an improved distribution of the lubricant.
- FIG. 3 shows a cross section of a roller bolt 22 arranged in a rotationally fixed manner in a rocker arm 16.
- This simple embodiment has a bore section 34 which is designed as a blind bore.
- Two radially arranged transverse bores 37 which lead the lubricant to the bearing point between the roller pin 22 and the roller 14 open into this.
- the transverse bores 37 are funnel-shaped at one end facing the roller 14, so that the lubricant can escape over a larger area.
- the installation of such a roller pin 22 is advantageously to be provided in such a way that the transverse bore 37 points away from the cam track.
- FIG. 4 shows an alternative embodiment of a roller bolt 22 arranged in a rotationally fixed manner in the rocker arm 16.
- the bore 30 has on an end face 24 funnel-shaped opening 36.
- the bore 30 is designed as a stepped bore and projects with its enlarged bore section at least over half the length of the roller bolt 22, so that the transverse bore 37 can be arranged radially outwards approximately in the central region of the roller bolt 22.
- the installation position of the roller pin 22 corresponds to the installation position described for FIG. 3.
- the bore section 34 extends, for example, over two thirds or three quarters of the length of the roller bolt 22, it being possible to arrange a plurality of transverse bores 37 which connect the bore section 34 to the bearing point.
- FIG. 5 shows a further embodiment of a roller pin 22, which enables a rotatable mounting in the rocker arm 16.
- the bore section 34 is arranged continuously, the transverse bores 37 arranged in the central region being offset from one another by 180 ° and thus making it possible to supply lubricant at two points opposite one another.
- the arrangement shown in FIG. 5 has the advantage that the roller pin 22 can be freely arranged in relation to the installation direction, since a funnel-shaped opening 36 for the through-bore is arranged on both end faces.
- the cross bores 37 can also be arranged at any angle to one another.
- several transverse bores 37 can be provided in a radial plane as well as in several radial planes.
- these are arranged offset from one another by 180 °, so that such a continuous transverse bore 37 can be produced in one operation.
- FIG. 6 shows an alternative embodiment of a lubricant supply device 26 to FIG. 2.
- This lubricant supply device 26 has two lubricant nozzles 32, so that if the lubricant supply device 26 is arranged between two cam drives 11 with one lubricant supply device 26, both cam drives 11 can be supplied with lubricant.
- a lubricant supply 26 can be provided between every second cam drive 11, as a result of which an inexpensive design can be provided.
- a lubricant supply device 26 shown in FIG. 6 can be arranged in each intermediate space formed by two cam drives 11.
- a roller pin 22 according to FIG. 5 is advantageously provided in the rocker arm 16, so that lubricant can be supplied from both sides.
- a cam drive 11 can also be given for an alternative embodiment to FIG. 1.
- the rocker arm 16 is fixedly connected at one end to the cylinder head via the bearing 17.
- a camshaft 12 is provided, which in the camshaft 13 middle region of the rocker arm drives roller 14.
- the drive part 19 is provided, which drives a pump nozzle 21 or the like.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9523953A JPH11501711A (ja) | 1995-12-30 | 1996-08-27 | カム駆動装置を有する内燃機関 |
US08/894,832 US5823154A (en) | 1995-12-30 | 1996-08-27 | Internal combustion engine with a cam drive |
KR1019970706049A KR100301334B1 (ko) | 1995-12-30 | 1996-08-27 | 캠구동장치가구비된내연기관 |
BR9607421A BR9607421A (pt) | 1995-12-30 | 1996-08-27 | Máquina de combustao interna com um acionamento de came |
EP96934381A EP0812380A1 (de) | 1995-12-30 | 1996-08-27 | Brennkraftmaschine mit einem nockenantrieb |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19549221.8 | 1995-12-30 | ||
DE19549221A DE19549221A1 (de) | 1995-12-30 | 1995-12-30 | Brennkraftmaschine mit einem Nockenantrieb |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1997024514A1 true WO1997024514A1 (de) | 1997-07-10 |
Family
ID=7781693
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE1996/001584 WO1997024514A1 (de) | 1995-12-30 | 1996-08-27 | Brennkraftmaschine mit einem nockenantrieb |
Country Status (7)
Country | Link |
---|---|
US (1) | US5823154A (de) |
EP (1) | EP0812380A1 (de) |
JP (1) | JPH11501711A (de) |
KR (1) | KR100301334B1 (de) |
BR (1) | BR9607421A (de) |
DE (1) | DE19549221A1 (de) |
WO (1) | WO1997024514A1 (de) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH1113426A (ja) * | 1997-06-23 | 1999-01-19 | Daido Metal Co Ltd | ローラ支持装置 |
DE19749079B4 (de) * | 1997-11-06 | 2007-12-20 | Schaeffler Kg | Nockenfolger eines Ventiltriebs einer Brennkraftmaschine |
BR0016283B1 (pt) | 1999-12-09 | 2013-01-22 | controle de egr de motor diesel de ciclo fechado incluindo monitoraÇço de evento. | |
US6470843B2 (en) * | 2001-02-16 | 2002-10-29 | Detroit Diesel Corporation | Rocker arm adjustment screw assembly |
DE102005009658B4 (de) * | 2005-02-02 | 2014-05-22 | Continental Teves Ag & Co. Ohg | Hydraulikaggregat |
US7980216B2 (en) * | 2008-03-14 | 2011-07-19 | GM Global Technology Operations LLC | Rocker arm assembly having slider roller oil pumping features |
US20100316506A1 (en) * | 2009-06-11 | 2010-12-16 | Gm Global Technology Operations, Inc. | Engine fuel pump drive system |
US9309787B2 (en) | 2014-06-30 | 2016-04-12 | Electro-Motive Diesel, Inc. | Engine rocker arm and roller assembly |
DE102015218632A1 (de) | 2015-09-28 | 2017-03-30 | Aktiebolaget Skf | Bolzen eines Ventilsteuerungshebels |
DE102016205833A1 (de) * | 2016-04-07 | 2017-10-12 | Mahle International Gmbh | Ventiltrieb für eine Brennkraftmaschine |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB280024A (en) * | 1926-10-22 | 1927-11-10 | Whitehead Torpedo Company Ltd | Improvements in or relating to the valve gear of internal combustion and other engines |
EP0275715A1 (de) * | 1986-12-26 | 1988-07-27 | Honda Giken Kogyo Kabushiki Kaisha | Hydraulikkreislauf für eine Ventilsteuervorrichtung in einer Brennkraftmaschine |
DE3933119A1 (de) * | 1989-10-04 | 1991-04-11 | Schaeffler Waelzlager Kg | Lagerbolzen fuer ein radialwaelzlager |
DE4334505A1 (de) * | 1992-10-14 | 1994-04-21 | Volkswagen Ag | Rollenstößel für den Nocken-Ventiltrieb eines Hubventils mit einer hydraulischen Ventilspielausgleichsvorrichtung |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5127374A (en) * | 1991-11-21 | 1992-07-07 | Morel Jr Edward J | Valve lifter |
JP3473065B2 (ja) * | 1993-10-30 | 2003-12-02 | スズキ株式会社 | ロッカアーム |
US5588413A (en) * | 1995-03-14 | 1996-12-31 | Caterpillar Inc. | Engine assembly with leaf spring cam follower |
US5566652A (en) * | 1995-10-06 | 1996-10-22 | Eaton Corporation | Light weight cam follower |
-
1995
- 1995-12-30 DE DE19549221A patent/DE19549221A1/de not_active Withdrawn
-
1996
- 1996-08-27 BR BR9607421A patent/BR9607421A/pt not_active Application Discontinuation
- 1996-08-27 JP JP9523953A patent/JPH11501711A/ja active Pending
- 1996-08-27 US US08/894,832 patent/US5823154A/en not_active Expired - Fee Related
- 1996-08-27 KR KR1019970706049A patent/KR100301334B1/ko not_active IP Right Cessation
- 1996-08-27 EP EP96934381A patent/EP0812380A1/de not_active Ceased
- 1996-08-27 WO PCT/DE1996/001584 patent/WO1997024514A1/de not_active Application Discontinuation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB280024A (en) * | 1926-10-22 | 1927-11-10 | Whitehead Torpedo Company Ltd | Improvements in or relating to the valve gear of internal combustion and other engines |
EP0275715A1 (de) * | 1986-12-26 | 1988-07-27 | Honda Giken Kogyo Kabushiki Kaisha | Hydraulikkreislauf für eine Ventilsteuervorrichtung in einer Brennkraftmaschine |
DE3933119A1 (de) * | 1989-10-04 | 1991-04-11 | Schaeffler Waelzlager Kg | Lagerbolzen fuer ein radialwaelzlager |
DE4334505A1 (de) * | 1992-10-14 | 1994-04-21 | Volkswagen Ag | Rollenstößel für den Nocken-Ventiltrieb eines Hubventils mit einer hydraulischen Ventilspielausgleichsvorrichtung |
Also Published As
Publication number | Publication date |
---|---|
US5823154A (en) | 1998-10-20 |
KR19980702643A (ko) | 1998-08-05 |
DE19549221A1 (de) | 1997-07-03 |
JPH11501711A (ja) | 1999-02-09 |
KR100301334B1 (ko) | 2001-11-22 |
EP0812380A1 (de) | 1997-12-17 |
BR9607421A (pt) | 1998-06-23 |
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