EP0900327B1 - Zylinderkopf für eine mehrzylindrige brennkraftmaschine - Google Patents
Zylinderkopf für eine mehrzylindrige brennkraftmaschine Download PDFInfo
- Publication number
- EP0900327B1 EP0900327B1 EP97918132A EP97918132A EP0900327B1 EP 0900327 B1 EP0900327 B1 EP 0900327B1 EP 97918132 A EP97918132 A EP 97918132A EP 97918132 A EP97918132 A EP 97918132A EP 0900327 B1 EP0900327 B1 EP 0900327B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cylinder head
- valves
- camshafts
- cylinder
- valve
- 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
Links
Images
Classifications
-
- 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
- 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
- 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
- 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
Definitions
- a cylinder head for a multi-cylinder internal combustion engine comprises at least two intake valves and two exhaust valves per cylinder, which are used for Central plane of the cylinder head are arranged in parallel, with the valve plate center of the intake valves and the valve plate centers of the exhaust valves not at the same distance from the center plane of the cylinder head are arranged.
- a generic cylinder head is from WO 86/05237 known. This cylinder head is completely symmetrical. Resulting from it a whole host of problems in accommodating the individual components in a confined space within the cylinder head.
- the intake valves as well as the exhaust valves are of two Camshafts controlled parallel to the center plane of the cylinder head are arranged between the valves and the cams of the central plane Camshafts a number of identical operating levers arranged and have the cylindrical associated with the valves Camshafts of the camshafts with different base circle diameters on. This ensures that the inlet channels and Exhaust channels of the cylinder head on the mounts for the stud bolts the cylinder, the camshaft bearings and the operating lever as well as past the recesses for the injection nozzles can be.
- the actuating levers assigned to the valves be inclined to different degrees to the camshafts. This is then another degree of freedom opened up, which is an even further one Utilization of the space available in the cylinder head is permitted.
- valve springs of the inlet valves and the outlet valves advantageously have which counteract the actuating levers, depending on the position of the valve disc centers different installation lengths when installed. This ensures that the valve springs are all the same size and have the same spring constant, depending on the installation length or Compression with different force against the actuating lever.
- the different forces are required because not only the valve disc centers of the valves but also the actuating levers in different Distances to the center plane of the cylinder head or the camshafts are arranged and come from the different distances of the Actuating lever different leverage forces when applying to the Cams of the camshafts result. So that the valve springs used the resulting different demands it is recommended to use relatively soft valve springs choose.
- the actuating levers are preferably designed as rocker arms, wherein the rocker arms are mounted on hydraulic support elements. Thereby there is no need to store the actuating levers on separate Waves, so that a substantial space saving is given. Also suitable the hydraulic support elements due to the play compensation in a special way for the arrangement of the actuating lever in different strongly inclined positions relative to the camshafts. The operating levers can therefore easily at different angles be arranged without additional measures being taken should be.
- the cylinder head 1 has each have two intake valves 2 and two exhaust valves 3 per cylinder 4.
- the valve plate centers 5 of the two inlet valves 2 as well as the valve plate centers 5 'of the two exhaust valves 3 are at different intervals to the center plane M of the cylinder head 1.
- valve spring 12 By means of a valve spring 12, the actuating levers 9 are pressed against the system brought the cams 8 of the camshafts 7, 7 '. Consequently, they work Actuating lever 9 when they are acted upon by the cams 8, against the force of the valve springs 12.
- the cams 8 of the camshafts 7, 7 'assigned to the intake valves 2 have different base circle diameters D G1 , D G2 . It can be clearly seen that D G1 there is greater than D G2 .
- the various actuating levers 9 all have the same position or inclination in the cylinder head 1.
- the working area of the actuating levers 9 is defined by the respective base circle diameter D G1 , D G2 and by the position of the intake valves 2.
- the working area is the area that corresponds to the cam 8 of the camshafts 7, 7 'is in contact.
- valve springs 12 used In order to be able to maintain approximately the same lever forces on the side of the support element 10 and on the side of the free end of the valve stem 6, 6 ', even in differently defined working areas, the valve springs 12 used, all of which have the same size and the same spring constant have different installation lengths L F1 , L F2 when installed .
- the installation length L F1 is chosen to be shorter than the installation length L F2 .
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
- Valve Device For Special Equipments (AREA)
Description
- Figur 1
- eine Draufsicht des erfindungsgemäßen Zylinderkopfes in stark vereinfachter schematischer Darstellung;
- Figur 2
- einen Schnitt entlang der Linie II-II' aus Figur 1, zur Veranschaulichung der Betätigung der beiden Einlaßventile gemäß der Erfindung; und
- Figur 3
- einen anderen Schnitt entlang der Linie III-III' aus Figur 1 zur Veranschaulichung der Betätigung der beiden Auslaßventile.
Claims (5)
- Zylinderkopf für eine mehrzylindrige Brennkraftmaschine, mitwenigstens zwei Einlaßventilen (2) und zwei Auslaßventilen (3) pro Zylinder (4), die zur Mittelebene (M) des Zylinderkopfes (1) parallel angeordnet sind, wobeidie Ventiltellermitten (5) der Einlaßventile (2) sowie die Ventiltellermitten (5') der Auslaßventile (3) jeweils nicht in gleichem Abstand zur Mittelebene (M) des Zylinderkopfes (1) angeordnet sind,die Einlaßventile (2) sowie die Auslaßventile (3) von zwei Nokkenwellen (7, 7') gesteuert werden, die zur Mittelebene (M) des Zylinderkopfes parallel angeordnet sind,zwischen den Ventilen (2, 3) und den Nocken (8) der Nockenwellen (7, 7') eine Anzahl von identisch ausgebildeten Betätigungshebeln (9) angeordnet ist, unddie den Ventilen (2, 3) zugeordneten Nocken (8) der Nockenwellen (7, 7') unterschiedlich große Grundkreisdurchmesser (DG1, DG2) aufweisen.
- Zylinderkopf nach Anspruch 1, dadurch gekennzeichnet, daß die den Ventilen (2, 3) zugeordneten Betätigungshebel (9) zu den Nockenwellen (7, 7') unterschiedlich stark geneigt sind.
- Zylinderkopf nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Betätigungshebel (9) jeweils entgegen der Kraft einer Ventilfeder (12) wirken, wobei die Ventilfedern (12) der Einlaßventile (2) sowie der Auslaßventile (3) je nach Lage der Ventiltellermitten (5, 5') in eingebautem Zustand unterschiedliche Einbaulängen (LF1, LF2) aufweisen.
- Zylinderkopf nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Betätigungshebel (9) als Schlepphebel ausgebildet sind.
- Zylinderkopf nach Anspruch 4, dadurch gekennzeichnet, daß die Schlepphebel auf hydraulischen Abstützelementen (10) gelagert sind.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19620546 | 1996-05-22 | ||
DE19620546A DE19620546A1 (de) | 1996-05-22 | 1996-05-22 | Zylinderkopf für eine mehrzylindrige Brennkraftmaschine |
PCT/EP1997/001848 WO1997044576A1 (de) | 1996-05-22 | 1997-04-14 | Zylinderkopf für eine mehrzylindrige brennkraftmaschine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0900327A1 EP0900327A1 (de) | 1999-03-10 |
EP0900327B1 true EP0900327B1 (de) | 1999-11-17 |
Family
ID=7794974
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97918132A Expired - Lifetime EP0900327B1 (de) | 1996-05-22 | 1997-04-14 | Zylinderkopf für eine mehrzylindrige brennkraftmaschine |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0900327B1 (de) |
CN (1) | CN1080822C (de) |
DE (2) | DE19620546A1 (de) |
WO (1) | WO1997044576A1 (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19801606A1 (de) * | 1998-01-17 | 1999-07-22 | Audi Ag | Zylinderkopf |
KR20010037508A (ko) | 1999-10-18 | 2001-05-07 | 이계안 | 디오에치시 디젤 엔진 |
DE102006042912A1 (de) * | 2006-09-13 | 2008-03-27 | Volkswagen Ag | Brennkraftmaschine mit gemischten Nockenwellen |
CN101457662B (zh) * | 2007-12-13 | 2011-03-16 | 财团法人工业技术研究院 | 可变阀机构 |
DE202010015760U1 (de) | 2010-11-23 | 2012-03-01 | Kessel Ag | Leichtstoff-Abscheider |
CN108590795A (zh) * | 2018-05-07 | 2018-09-28 | 哈尔滨工程大学 | 一种可以形成进气涡流的柴油机气阀机构 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1751401A1 (de) * | 1968-05-24 | 1971-02-18 | Klaue Hermann | Vierventiliger Zylinderkopf fuer Brennkraftmaschinen |
DE2025304A1 (de) * | 1970-05-23 | 1971-12-09 | Daimler-Benz Ag, 7000 Stuttgart | Ventilsteuerung für einen schnell laufenden Viertakt-Verbrennungsmotor mit mehr als zwei Ventilen je Zylinder |
GB2036172B (en) * | 1978-03-03 | 1982-08-25 | Caterpillar Tractor Co | Multi inlet air flow passage arrangement for diesel engines |
SE464099B (sv) * | 1985-01-29 | 1991-03-04 | Honda Motor Co Ltd | Foerbraenningsmotor innefattande cylinder med ovalt tvaersnitt |
DE3507767A1 (de) * | 1985-03-05 | 1986-09-11 | Knorr-Bremse AG, 8000 München | Ladungsdrall- und/oder -turbulenzeinrichtung fuer verbrennungsmotore |
JPH0392573A (ja) * | 1989-09-05 | 1991-04-17 | Nissan Motor Co Ltd | 内燃機関のシリンダヘッド |
JP3150353B2 (ja) * | 1991-03-18 | 2001-03-26 | マツダ株式会社 | エンジンの燃焼室構造 |
JPH0828284A (ja) * | 1994-07-20 | 1996-01-30 | Yamaha Motor Co Ltd | 4サイクルエンジンの吸気装置 |
-
1996
- 1996-05-22 DE DE19620546A patent/DE19620546A1/de not_active Ceased
-
1997
- 1997-04-14 DE DE59700735T patent/DE59700735D1/de not_active Expired - Lifetime
- 1997-04-14 CN CN97194782A patent/CN1080822C/zh not_active Expired - Fee Related
- 1997-04-14 EP EP97918132A patent/EP0900327B1/de not_active Expired - Lifetime
- 1997-04-14 WO PCT/EP1997/001848 patent/WO1997044576A1/de active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
CN1080822C (zh) | 2002-03-13 |
WO1997044576A1 (de) | 1997-11-27 |
EP0900327A1 (de) | 1999-03-10 |
DE19620546A1 (de) | 1997-11-27 |
DE59700735D1 (de) | 1999-12-23 |
CN1219219A (zh) | 1999-06-09 |
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