US20010009146A1 - Cylinder head for a valve-controlled internal combustion engine - Google Patents
Cylinder head for a valve-controlled internal combustion engine Download PDFInfo
- Publication number
- US20010009146A1 US20010009146A1 US09/765,398 US76539801A US2001009146A1 US 20010009146 A1 US20010009146 A1 US 20010009146A1 US 76539801 A US76539801 A US 76539801A US 2001009146 A1 US2001009146 A1 US 2001009146A1
- Authority
- US
- United States
- Prior art keywords
- camshaft
- bearing
- cylinder head
- bearing block
- bearing sleeve
- 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
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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
- F01L1/02—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
- F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
- F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
-
- 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
- F02F1/26—Cylinder heads having cooling means
- F02F1/36—Cylinder heads having cooling means for liquid cooling
- F02F1/38—Cylinder heads having cooling means for liquid cooling the cylinder heads being of overhead valve 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
- F01L1/02—Valve drive
- F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
- F01L1/047—Camshafts
- F01L2001/0476—Camshaft bearings
Definitions
- This invention relates to a cylinder head for a valve-controlled internal combustion engine.
- the European Patent Document EP 0 829 620 A2 discloses that valve-controlling camshafts are mounted by means of bearing sleeves in a cylinder head housing so as to rotate. Furthermore, the. German Patent Document DE 41 43 153 A1 discloses that the relative angular position between camshaft and the camshaft-driving sprocket wheel can be changed by means of so-called axial camshaft adjusters, thus changing the opening and closing times of the valves of the internal combustion engine.
- cylinder head housings of engines have bearing blocks for the purpose of mounting the camshafts.
- Said bearing blocks exhibit a bearing block width that is decreased in segments owing to the screw-in openings for fastening the cylinder head housing to the cylinder head.
- An objective of the present invention is to provide for such a cylinder head housing a compact camshaft mounting, which can simultaneously provide the force-fed oil for the camshaft adjuster, arranged at the camshaft.
- a cylinder head housing in which there are bearing blocks for the inlet or outlet camshaft, at least one camshaft has a camshaft adjuster, by means of which the position of the drive wheel of the camshaft can be changed relative to the axis of rotation of the camshaft.
- At least the bearing block which is provided next to the camshaft adjuster and is intended for the camshaft, exhibits a segment, whose width is reduced owing to a recess for the screw connection of the cylinder head housing.
- the bearing site arranged next to the camshaft adjuster, exhibits a bearing sleeve for the camshaft, in such a manner that the segment of the bearing site that is provided with a reduced bearing block width is expanded to the actual bearing block width, and the sleeve exhibits openings to supply oil for the camshaft adjuster.
- the bearing sleeve is provided on its two face sides with a collar, which serves, on the one hand, the axial mounting of the camshaft and, on the other hand, the fixing in position of the bearing sleeve in the bearing block.
- the bearing sleeve has on its peripheral surface openings, which serve to feed force-fed oil to a camshaft adjuster, fastened to the camshaft.
- FIG. 1 illustrates the cylinder head housing of an internal combustion engine and part of the camshaft.
- FIG. 2 illustrates a detail of the cylinder head housing without the camshaft.
- FIG. 3 shows a front view of the sleeve.
- FIG. 4 shows a side view of the sleeve, of which its cross section is depicted to some extent.
- FIG. 5 shows a sectional view along line V in FIG. 4.
- FIG. 6 shows a sectional view along line VI in FIG. 4.
- FIG. 7 shows a sectional view along line VII in FIG. 4.
- FIG. 8 shows a perspective view of the bearing sleeve.
- the camshaft 12 which is mounted in a cylinder head housing 10 so as to rotate, has two pairs of different cams 14 and 16 , which define the valve lift and the opening and closing times of the inlet valves by way of bucket tappets (not illustrated), guided in the openings 17 .
- the camshaft 12 has on its outer face a sprocket wheel 18 , which drives the camshaft 12 and is a component of an axial. camshaft adjuster 22 , fastened to the camshaft 12 by way of a screw bolt 20 .
- the construction of the camshaft adjuster 22 is known from the state of the art and is described below only in connection with those features that are essential to the invention.
- the cylinder head housing 10 exhibits several bearing blocks 24 , 24 ′, in which the camshaft 12 can be rotated.
- the cylinder head housing 10 also has screw-in openings 26 for the purpose of fastening the cylinder head housing 10 to the cylinder head.
- the bearing block 24 ′ accommodates a bearing sleeve 30 , which exercises the functions, described in detail below.
- the bearing sleeve 30 has on its outer face two collars 32 and 34 .
- the collar 32 has two radially arranged recesses 36 , which correspond in such a manner with the shoulders of the bearing block 24 ′ that the bearing sleeve 30 is held twist-proof in the recess 38 for accommodating the camshaft 12 .
- the bearing sleeve 30 On a radial bearing surface 40 , the bearing sleeve 30 includes two pairs of openings 42 and 44 , by way of which force-fed oil can be guided to an internal final control member 46 of the camshaft adjuster 22 .
- the force-fed oil is fed by way of a control valve 48 over force-fed oil lines 50 and 52 , over radially revolving grooves 54 and 56 formed in the camshaft 12 , and over boreholes 58 and 60 , arranged in the camshaft 12 , to the two pressure chambers 62 and 64 , with whose aid the internal final control member 46 and the position of the sprocket wheel 18 can be adjusted, as desired, with respect to the position of the cams 14 , 16 .
- the bearing sleeve 30 arranged in the bearing block 24 ′, enlarges the bearing block in the area of the radial recess 28 of the bearing block 24 ′ so that force-fed oil can be fed simultaneously to the camshaft adjuster 22 at this bearing site, arranged close to the camshaft adjuster 22 . Furthermore, the bearing sleeve 30 serves to mount the camshaft 12 axially, since on the one side of the bearing block 24 ′ the camshaft adjuster 22 rests flush against the collar 34 of the bearing sleeve 30 ; and on the other side of the bearing block 24 ′ the collar 32 of the bearing sleeve 30 rests flush against a collar 66 of the camshaft 12 .
- the bearing points of the camshaft 12 are designed as two parts, where the non-illustrated upper bearing shells are connected with corresponding screw connections to the bearing blocks 24 , 24 ′.
- the borehole 68 provided in the bearing sleeve 30 , serves to supply lubrication for the camshaft bearing, whereas the oil channels 70 , arranged in the cylinder head housing 10 , are provided to supply the bucket tappets with lubricating oil.
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)
Abstract
Description
- This application claims the priority of German Application 10002512.9, filed Jan. 21, 2000, the disclosure of which is expressly incorporated by reference herein.
- This invention relates to a cylinder head for a valve-controlled internal combustion engine.
- The European Patent Document EP 0 829 620 A2 discloses that valve-controlling camshafts are mounted by means of bearing sleeves in a cylinder head housing so as to rotate. Furthermore, the. German Patent Document DE 41 43 153 A1 discloses that the relative angular position between camshaft and the camshaft-driving sprocket wheel can be changed by means of so-called axial camshaft adjusters, thus changing the opening and closing times of the valves of the internal combustion engine.
- Furthermore, it is known that cylinder head housings of engines have bearing blocks for the purpose of mounting the camshafts. Said bearing blocks exhibit a bearing block width that is decreased in segments owing to the screw-in openings for fastening the cylinder head housing to the cylinder head.
- An objective of the present invention is to provide for such a cylinder head housing a compact camshaft mounting, which can simultaneously provide the force-fed oil for the camshaft adjuster, arranged at the camshaft.
- This problem is solved by a cylinder head housing, in which there are bearing blocks for the inlet or outlet camshaft, at least one camshaft has a camshaft adjuster, by means of which the position of the drive wheel of the camshaft can be changed relative to the axis of rotation of the camshaft.
- At least the bearing block, which is provided next to the camshaft adjuster and is intended for the camshaft, exhibits a segment, whose width is reduced owing to a recess for the screw connection of the cylinder head housing. The bearing site, arranged next to the camshaft adjuster, exhibits a bearing sleeve for the camshaft, in such a manner that the segment of the bearing site that is provided with a reduced bearing block width is expanded to the actual bearing block width, and the sleeve exhibits openings to supply oil for the camshaft adjuster.
- The features, cited in the dependent claims, disclose other advantageous designs and improvements of the cylinder head, according to the invention.
- The bearing sleeve is provided on its two face sides with a collar, which serves, on the one hand, the axial mounting of the camshaft and, on the other hand, the fixing in position of the bearing sleeve in the bearing block.
- The bearing sleeve has on its peripheral surface openings, which serve to feed force-fed oil to a camshaft adjuster, fastened to the camshaft.
- One embodiment of the invention is depicted in the drawings and is explained in detail below.
- Other objects, advantages and novel features of the present invention will become apparent from the following detailed description of the invention when considered in conjunction with the accompanying drawings.
- FIG. 1 illustrates the cylinder head housing of an internal combustion engine and part of the camshaft.
- FIG. 2 illustrates a detail of the cylinder head housing without the camshaft.
- FIG. 3 shows a front view of the sleeve.
- FIG. 4 shows a side view of the sleeve, of which its cross section is depicted to some extent.
- FIG. 5 shows a sectional view along line V in FIG. 4.
- FIG. 6 shows a sectional view along line VI in FIG. 4.
- FIG. 7 shows a sectional view along line VII in FIG. 4.
- FIG. 8 shows a perspective view of the bearing sleeve.
- As shown in FIG. 1, the
camshaft 12, which is mounted in acylinder head housing 10 so as to rotate, has two pairs ofdifferent cams 14 and 16, which define the valve lift and the opening and closing times of the inlet valves by way of bucket tappets (not illustrated), guided in theopenings 17. - The
camshaft 12 has on its outer face asprocket wheel 18, which drives thecamshaft 12 and is a component of an axial. camshaft adjuster 22, fastened to thecamshaft 12 by way of ascrew bolt 20. The construction of thecamshaft adjuster 22 is known from the state of the art and is described below only in connection with those features that are essential to the invention. Thecylinder head housing 10 exhibitsseveral bearing blocks camshaft 12 can be rotated. Thecylinder head housing 10 also has screw-inopenings 26 for the purpose of fastening thecylinder head housing 10 to the cylinder head. Owing to the spatial conditions governing the design in thecylinder head housing 10, it is advantageous to provide thebearing blocks openings 26 for the cylinder head screws with aradial recess 28, so that the non-illustrated cylinder head screws can be pushed into the screw-inopenings 26 and screwed to the cylinder head. - The
bearing block 24′, arranged next to thecamshaft adjuster 22, accommodates abearing sleeve 30, which exercises the functions, described in detail below. As shown in FIGS. 3-8, thebearing sleeve 30 has on its outer face twocollars collar 32 has two radially arrangedrecesses 36, which correspond in such a manner with the shoulders of thebearing block 24′ that thebearing sleeve 30 is held twist-proof in therecess 38 for accommodating thecamshaft 12. On a radial bearingsurface 40, thebearing sleeve 30 includes two pairs ofopenings final control member 46 of thecamshaft adjuster 22. The force-fed oil is fed by way of acontrol valve 48 over force-fedoil lines 50 and 52, over radially revolvinggrooves camshaft 12, and overboreholes 58 and 60, arranged in thecamshaft 12, to the twopressure chambers final control member 46 and the position of thesprocket wheel 18 can be adjusted, as desired, with respect to the position of thecams 14, 16. - The
bearing sleeve 30, arranged in thebearing block 24′, enlarges the bearing block in the area of theradial recess 28 of thebearing block 24′ so that force-fed oil can be fed simultaneously to thecamshaft adjuster 22 at this bearing site, arranged close to thecamshaft adjuster 22. Furthermore, thebearing sleeve 30 serves to mount thecamshaft 12 axially, since on the one side of thebearing block 24′ the camshaft adjuster 22 rests flush against thecollar 34 of thebearing sleeve 30; and on the other side of thebearing block 24′ thecollar 32 of thebearing sleeve 30 rests flush against acollar 66 of thecamshaft 12. The bearing points of thecamshaft 12 are designed as two parts, where the non-illustrated upper bearing shells are connected with corresponding screw connections to thebearing blocks - The
borehole 68, provided in thebearing sleeve 30, serves to supply lubrication for the camshaft bearing, whereas theoil channels 70, arranged in thecylinder head housing 10, are provided to supply the bucket tappets with lubricating oil. - The foregoing disclosure has been set forth merely to illustrate the invention and is not intended to be limiting. Since modifications of the disclosed embodiments incorporating the spirit and substance of the invention may occur to persons skilled in the art, the invention should be construed to include everything within the scope of the appended claims and equivalents thereof.
Claims (7)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10002512A DE10002512A1 (en) | 2000-01-21 | 2000-01-21 | Cylinder head for a valve-controlled internal combustion engine |
DE10002512 | 2000-01-21 | ||
DEDE10002512.9 | 2000-01-21 |
Publications (2)
Publication Number | Publication Date |
---|---|
US20010009146A1 true US20010009146A1 (en) | 2001-07-26 |
US6439180B2 US6439180B2 (en) | 2002-08-27 |
Family
ID=7628273
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/765,398 Expired - Fee Related US6439180B2 (en) | 2000-01-21 | 2001-01-22 | Cylinder head for a valve-controlled internal combustion engine |
Country Status (3)
Country | Link |
---|---|
US (1) | US6439180B2 (en) |
EP (1) | EP1118762A3 (en) |
DE (1) | DE10002512A1 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10135146A1 (en) | 2001-07-19 | 2003-01-30 | Porsche Ag | Device for the relative change in the angle of rotation of a camshaft |
DE102004043935B4 (en) * | 2004-09-11 | 2016-10-20 | Audi Ag | Device in the cylinder head of a valve-controlled internal combustion engine |
DE102004051424B4 (en) * | 2004-10-22 | 2017-03-30 | Schaeffler Technologies AG & Co. KG | Device for adjusting the camshaft of an internal combustion engine and assembly tool |
DE102008039038B4 (en) | 2008-08-21 | 2021-01-28 | Schaeffler Technologies AG & Co. KG | Camshaft adjuster |
DE202008018657U1 (en) | 2008-08-21 | 2017-11-20 | Schaeffler Technologies AG & Co. KG | Phaser |
EP2589729B1 (en) | 2011-11-04 | 2014-07-16 | Hörmann Kg Amshausen | Garage door handle creating an electrical signal for actuating a side section door |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04191406A (en) * | 1990-11-26 | 1992-07-09 | Atsugi Unisia Corp | Valve timing control device for internal combustion engine |
DE4116944C2 (en) * | 1991-05-24 | 1997-05-22 | Daimler Benz Ag | Cylinder head for a multi-cylinder internal combustion engine |
DE4143153A1 (en) | 1991-12-28 | 1993-07-01 | Bosch Gmbh Robert | HYDRAULIC CONTROL DEVICE |
US5522354A (en) * | 1993-10-29 | 1996-06-04 | Yamaha Hatsudoki Kabushiki Kaisha | Valve mechanism for internal combustion engine |
JP2924777B2 (en) * | 1996-04-08 | 1999-07-26 | トヨタ自動車株式会社 | Variable valve timing mechanism for internal combustion engine |
DE19637416A1 (en) | 1996-09-13 | 1998-03-19 | Bayerische Motoren Werke Ag | Adjustable camshaft for a valve-controlled reciprocating machine, in particular an internal combustion engine |
JPH10184323A (en) * | 1996-12-26 | 1998-07-14 | Yamaha Motor Co Ltd | Four cycle engine |
DE19747035A1 (en) * | 1997-10-24 | 1999-04-29 | Daimler Chrysler Ag | Variable valve timing |
DE19747244A1 (en) * | 1997-10-27 | 1999-04-29 | Schaeffler Waelzlager Kg | Cylinder head for internal combustion engine |
JP4036401B2 (en) * | 1998-03-27 | 2008-01-23 | ヤマハ発動機株式会社 | 4-cycle engine with variable valve timing system |
JP3755312B2 (en) * | 1998-09-30 | 2006-03-15 | スズキ株式会社 | Cam bearing structure of internal combustion engine |
-
2000
- 2000-01-21 DE DE10002512A patent/DE10002512A1/en not_active Ceased
- 2000-11-28 EP EP00125967A patent/EP1118762A3/en not_active Ceased
-
2001
- 2001-01-22 US US09/765,398 patent/US6439180B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP1118762A3 (en) | 2002-08-14 |
DE10002512A1 (en) | 2001-07-26 |
US6439180B2 (en) | 2002-08-27 |
EP1118762A2 (en) | 2001-07-25 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: DR. ING. H.C.F. PORSCHE AG, GERMANY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:GROGER, KLAUS;SCHWARZENTHAL, DIETMAR;REEL/FRAME:011483/0438 Effective date: 20010116 |
|
FPAY | Fee payment |
Year of fee payment: 4 |
|
AS | Assignment |
Owner name: DR. ING. H.C.F. PORSCHE AKTIENGESELLSCHAFT (COMPAN Free format text: MERGER;ASSIGNOR:DR. ING. H.C.F. PORSCHE AKTIENGESELLSCHAFT (COMPANY NUMBER 5211);REEL/FRAME:021040/0147 Effective date: 20071113 |
|
REMI | Maintenance fee reminder mailed | ||
LAPS | Lapse for failure to pay maintenance fees | ||
STCH | Information on status: patent discontinuation |
Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
|
FP | Lapsed due to failure to pay maintenance fee |
Effective date: 20100827 |