EP3268597A1 - Brennkraftmaschine mit zumindest einem zylinder - Google Patents
Brennkraftmaschine mit zumindest einem zylinderInfo
- Publication number
- EP3268597A1 EP3268597A1 EP16713721.5A EP16713721A EP3268597A1 EP 3268597 A1 EP3268597 A1 EP 3268597A1 EP 16713721 A EP16713721 A EP 16713721A EP 3268597 A1 EP3268597 A1 EP 3268597A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cylinder
- cylinder head
- plane
- internal combustion
- angle
- 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
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
- F02F7/00—Casings, e.g. crankcases
- F02F7/0002—Cylinder arrangements
-
- 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
-
- 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
- F02B75/00—Other engines
- F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
-
- 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
- F02F7/0002—Cylinder arrangements
- F02F7/0004—Crankcases of one-cylinder engines
-
- 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
- F02F7/0002—Cylinder arrangements
- F02F7/0007—Crankcases of engines with cylinders in line
-
- 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
- F02F7/006—Camshaft or pushrod housings
- F02F2007/0063—Head bolts; Arrangements of cylinder head bolts
Definitions
- the invention relates to an internal combustion engine having at least one cylinder with at least one cylinder head per cylinder via a cylinder head connected cylinder head, wherein per cylinder two intake valves and two exhaust valves are arranged, which have a twisted valve image with respect to a motor longitudinal plane, the screw axes of all one Cylinder associated cylinder head bolts clamped parallel to the cylinder axis arranged cylinder head screw planes.
- Cylinder heads with twisted valve image having internal combustion engines are known from the publications DE 2 234 642 AI, DE 37 10 453 AI or DE 197 35 183 AI.
- the object of the invention is to avoid these disadvantages and with little effort a compact, structurally stable internal combustion engine with simple valve To create a drive that allows the highest possible flexibility in the positioning of components.
- the cylinder head bolt assembly is thus rotated about the cylinder axis.
- Variants of the invention are implemented for example in single cylinder heads and / or in internal combustion engines with one or more cylinders whose cylinder heads are fixed with four cylinder head bolts.
- the engine longitudinal plane is spanned by the crankshaft of the crankshaft of the internal combustion engine and at least one cylinder axis of a cylinder.
- engine cross planes are understood here normal planes to the engine longitudinal plane, which extend through the cylinder axis or parallel thereto.
- Valve picture is to be understood here as the arrangement of the intake and exhaust valves considered in the plan view of a cylinder.
- a valve image is referred to, in which the valve plane of symmetry with the motor longitudinal plane an angle of rotation not equal to 0 ° (also not equal to 90 °, 180 ° and 270 °) includes, wherein the valve plane of symmetry through the cylinder axis or parallel to the cylinder axis and through the center of the distance between the intake valves and the center of the distance between the exhaust valves.
- the angle of rotation of the valve image ⁇ is between 35 ° and 50 °, preferably 45 °.
- the screw pattern can have the shape of a polygon, for example a quadrilateral-in particular a rectangle or a square. Conveniently, the screw pattern of the cylinder head bolts of at least one cylinder is rotated with respect to the cylinder axis.
- the screw pattern of the cylinder head bolts here shows the arrangement of the bolt axes of the cylinder head bolts considered in the plan view of a cylinder. ben understood. In the case described here, said screw axes are located at the vertices of a polygon.
- a screw pattern twisted with respect to the cylinder axis is to be understood here as a screw pattern in which all cylinder head screw planes defined by two adjacent or diametrically opposed cylinder head bolts (the respective cylinder head screw plane is clamped by the screw axis of the associated cylinder head bolts) of two cylinder head bolts of one cylinder - Viewed floor plan - are tilted or rotated to the engine longitudinal plane and / or to the engine transverse plane.
- each cylinder head bolt plane associated with a cylinder with the engine longitudinal axis includes a non-zero screw plane angle.
- the angle of rotation of the screw pattern can be defined for example by the smallest of all cylinder associated screw plane angle. It is particularly advantageous if the angle of rotation of the screw pattern is between approximately 5 ° and 45 °, preferably between approximately 15 ° and 30 °, for example 23 °.
- the absolute amounts of the rotation angle of the screw pattern and the angle of rotation of the valve image are the same.
- the intake and exhaust valves including the screw pattern of the cylinder head bolts so by the same angular amount - either the same, or oppositely oriented - arranged rotated around the cylinder axis.
- the angle of rotation of the valve image is defined as an angle between an on the one hand two intake valves and on the other hand two exhaust valves extending valve symmetry plane and a motor longitudinal plane.
- At least one cylinder head bolt of a first cylinder head and at least one cylinder head bolt of a second cylinder head of adjacent cylinders extend in the region of at least one between the adjacent cylinders Engine transverse plane are orders.
- the illustrations of the cylinder head bolts preferably overlap or overlap in a parallel projection onto the engine longitudinal plane.
- the Zyl inderkopfschrauben are usually arranged in individual cylinder heads usually in the range of tab-like projections of the cylinder head, which Anform increases the footprint of the cylinder head. Between two conformations, the cylinder head generally has a smaller radial extent. The erforderl Ie space can be significantly reduced, who nn between two adjacent projections of a cylinder Anform tion of a cylinder head of an adjacent Zyli is positioned.
- the angle ⁇ between the A lassventil- Sym metrieebene and the engine longitudinal plane and / or the angle ⁇ 2 between the Auslassventi l-Sym metrieebene and the motor longitudinal plane between 35 ° and 50 °, preferably 45 °.
- the angle Yi between the inlet valve Sym metrieebene and the engine longitudinal plane and / or the angle ⁇ 2 between the exhaust valve plane of symmetry and the engine ⁇ longitudinal plane are identical to the angle of rotation ⁇ of the valve image.
- Fig. 1 a cylinder head of an internal combustion engine according to the invention in a plan view
- Fig. 3 is a Indians consisting of two Zyl engine bank a fiction, ⁇ modern internal combustion engine in a plan view;
- FIG. 4 and FIG. 5 further illustrations of the cylinder head of FIG. 1 ;
- FIG. 6 is another illustration of the cylinder head of FIG. Second
- Fig. 1 shows a plan view of a cylinder head 11 of an internal combustion engine 2 according to the invention.
- the solution illustrated is particularly advantageous for Internal combustion engines with cylinder internal pressures of about 200 bar and above.
- two intake valves 3, 4 and two exhaust valves 5, 6 are provided for each cylinder 1.
- an insertion opening 16 is arranged for example, a fuel injection device or an injector.
- the cylinder axis la extends vertically to the image plane.
- the inlet valves 3, 4 are flowed through a common inlet channel 7, wherein the inlet channel 7 in the direction of the cylinder axis la approximately in the region of the cylinder bore diameter - indicated by the circle 8 - in each case an inlet valve 3, 4 leading Einlasssteilkanäle 7a, 7b divided.
- An inlet channel separation point 30 is shown in FIG. 4: this is a projection of the channel progressions into a plane in or parallel to a cylinder head density plane (corresponding to the leaf plane in FIG. 4) around that point in the separation region of the inlet part channels 7a , 7b, which is closest to the cylinder axis la. Separation area here means that due to the cross-sectional shape of the channels no precise separation point is definable.
- Fig. 4 also shows the inlet valve axes 3a, 4a, which are normal to the page plane of Fig. 4 and at the same time form the centers of the respective valve openings.
- FIG. 4 shows a Auslasssteilkanal 9a, 9b, which unite in the direction away from the cylinder axis la direction also outside the cylinder bore diameter to a common outlet channel 9.
- a discharge channel connection point 31 can be seen in FIG. 4: this is a projection of the channel progressions into a plane in or parallel to a cylinder head density plane (corresponds to the leaf plane in FIG. 4) around that point of the connection region of the outlet part channels 9a, 9b which is closest to cylinder axis 1a. Also, the term connection area takes into account the cross-sectional convergence of the outlet part channels 9a, 9b.
- Fig. 4 also shows the Auslassventilachsen 5a, 6a, which are normal to the sheet plane of Fig. 4 and at the same time form the centers of the respective valve openings.
- Intake passage 7 and exhaust passage 9 lead to an inlet flange 7c and outlet flange 9c, respectively.
- the inlet part channels 7a, 7b or the outlet part channels 9a, 9b are not brought together, but lead to their own inlet part flanges and outlet part flanges.
- a valve train of known type via respectively the inlet 3, 4 and exhaust valves 5, 6 connecting valve bridges 10a, 10b, the valve spring assemblies 14 and a Kipphebelan Aunt 13 mounted on a rocker shaft 12 - namely an intake rocker arm 13a and a Auslrawkipphebel 13b - via bumpers 15a, 15b are actuated.
- a rotated valve image is realized. This means that the positions of the intake 3, 4 and exhaust valves 5, 6 and the associated openings are rotated clockwise or counterclockwise about the cylinder axis la.
- a valve image is referred to, in which the valve symmetry plane 17 with the motor longitudinal plane 2a includes a twist angle ⁇ ⁇ 0.
- valve symmetry plane 17 a cylinder head sealing surface coinciding normal to the image plane or to the image plane is designated by the center 17a of the distance between the inlet valves 3, 4 and the center 17b of the distance between the outlet valves 5, 6.
- valve symmetry plane 17 is inclined in the illustrated embodiment by an angle ⁇ of about 35 ° -45 ° to the motor longitudinal plane 2a .
- the ramifications of Einlassteilkanäle 7a, 7b and outlet sub-channels 9a, 9b extends within the cylinder bore diameter representing circle 8 at least approximately parallel or symmetrical to the valve symmetry plane 17 of the intake valves 3, 4 and exhaust valves 5, 6th
- the intake valve symmetry plane 171 (FIG. 4) is normal to the image plane or cylinder head sealing surface coincident with the image plane and normal to the connection plane of the intake valve axes 3a, 4a (this joint plane passes through the two valve axes) through the center 17a of the exhaust between the intake valves 3 4.
- the angle ⁇ between the inlet valve symmetry plane 171 and the motor longitudinal plane 2a is between 15 ° and 85 °, preferably 45 ° - in this preferred variant, it is thus identical to the angle ⁇ between the valve plane of symmetry 17 and motor longitudinal plane 2a.
- the exhaust valve symmetry plane 172 is also normal to the image plane or cylinder head sealing surface coincident with the image plane and normal to the joint plane of the exhaust valve axes 5a, 6a (this joint plane passes through the two valve axes) through the center 17b of the exhaust between the exhaust valves 3, 4 Angle ⁇ 2 between the outlet Valve plane of symmetry 172 and the motor longitudinal plane 2a is also between 15 ° and 85 °, preferably 45 ° - in this preferred variant, it is thus identical to the angle ⁇ between the valve plane of symmetry 17 and motor longitudinal plane 2a.
- the Einlasssteilkanäle 7a, 7b and / or the Auslasssteilkanäle 9a, 9b thus extend within the cylinder bore diameter parallel or symmetrical to the valve plane of symmetry 17 or respectively to the intake valve 171 or exhaust valve symmetry plane 172nd
- the projection of respectively the inlet valve axes 3a, 4a and the inlet channel separation point 30 and / or the outlet valve axes 5a, 6a and the outlet channel connection point 31 into the plane in or parallel to the cylinder head sealing plane (corresponds to the plane of the leaf in FIG ) formed triangle has an area that corresponds to 5 to 15 percent, preferably 7 percent of the bore surface. Bore area here refers to the area of the circle 8, which denotes the cylinder bore diameter.
- the triangle formed on the inlet and outlet side can have the same but also different surface areas within the specified limits.
- cylinder head bolts 19, 20, 21, 22 are arranged at the vertices of a designed as a polygon cylinder head outer contour 23 of the cylinder head 11, in the illustrated embodiment, a square in the region associated laschenartiger projections 25, 26, 27, 28.
- more screws can be provided, as well as the polygon can be designed as a rectangle, hexagon or other polygonal type.
- a rotation of the screw pattern by a twist angle ß 23 ° counterclockwise, but in principle can be realized as needed, a rotation of between 15 ° and 30 °.
- all of the cylinder head screw planes 24a, 24b, 24c, 24d, 24e, 24f of two cylinder head screws 19 defined by the axes 19a, 20a, 21a, 22a of two or for example diametrically opposed cylinder head bolts 19, 20, 21, 22 , 20, 21, 22 of a cylinder 1 - viewed in plan view - to the engine longitudinal plane 2a and / or to the engine transverse plane 2b inclined in each case by a helical plane angle.
- the angle of rotation ⁇ of the screw pattern is defined by the deviation from a conventional untwisted screw pattern, in which at least one Zyiinderkopfschraubenebene 24a, 24b, 24c, 24d, 24e, 24f is formed parallel to the engine longitudinal plane 2a or the engine transverse plane 2b.
- La screw pattern of the rotation angle ß of the screw pattern is defined by the smallest of all a cylinder 1 associated screw plane angle.
- the angle of rotation ⁇ is defined by the helical plane angle between the two cylinder head bolts, which lie opposite one another with respect to the cylinder axis 1a and are closest to the engine longitudinal plane 2a. In the illustration of FIG. 1, this would therefore relate to the cylinder head screw 20 at the bottom left and the cylinder head screw 22 at the top right - "bottom left” and "top right” always with regard to the representation in FIG. 1.
- a cylinder head screw radius 32 results for a circle with center point cylinder axis 1 a passing through the centers of all cylinder head bolts 19, 20, 21, 22 (or their axes 19 a, 20 a, 21 a, 22 a).
- this cylinder head screw radius 32 between 60 percent and 95 percent, preferably 78 percent of the cylinder bore diameter 33 (ie the diameter of the circle 8).
- the cylinder head bolt spacing 34 between directly spaced cylinder head bolts is then in the embodiment of Fig. 1 and Fig. 5 with four cylinder head bolts 19, 20, 21, 22 between 100 percent and 120 percent, preferably 111 percent of the cylinder bore diameter 33.
- the cylinder head bolt spacing between spaced screws is between 70 percent and 90 percent, preferably 78 percent of the cylinder bore diameter.
- valve image and cylinder head bolts are rotated by the same angle about the cylinder axis la, or by the same absolute amount, but in the opposite direction.
- the profile of the inlet channel 7, the inlet part channels 7a, 7a and the outlet channel 9 and the outlet sub-channels 7a, 7a are made more flexible. On the one hand, this makes it easier to adapt the twist, on the other hand, in particular by the resulting ramification with a wider distance between the sub-channels implement a cylinder head structure with greater strength, as at a wider distance additional material can be cast. In addition, there is a maximum filling of the cylinder by the best possible inflow.
- Fig. 6 shows such an embodiment, where the angle of the longitudinal axes of the inlet 13a and outlet rocker 13b is shown.
- the angle ⁇ between the intake rocker arm longitudinal axis 130a and the engine longitudinal plane 2a and the angle ⁇ between the exhaust rocker shaft 130b and the engine longitudinal plane 2a is in each case between 65 ° and 115 °, preferably 80 °.
- the angles can be the same, but also executed differently within the specified ranges.
- valve train For a better positioning of the valve train is possible, in particular for parallel running of the camshaft (not shown) to the engine longitudinal plane 2a. This results in favorable translations or lever arrangements of the valve train and advantages in packaging. Elaborate, expensive angled lever solutions can be dispensed with.
- FIG. 3 A further advantage can be seen in FIG. 3: Here, a first 1 'and a second cylinder 1 "as well as a first and a second cylinder head 11', 11" of an internal combustion engine 2 according to the invention are shown, whereby, of course, further, adjacent cylinders may be present ,
- the cylinder heads 11 ', 11 are formed in the example as single cylinder heads.
- valve symmetry plane 17 is rotated by an angle ⁇ of 35 ° -50 °, preferably 45 °, with respect to the engine longitudinal plane 2a and if the cylinder head screw polygon by a twist angle ß of 15 ° -35 °, preferably 25 ° is rotated against the motor longitudinal plane 2a.
- merged channel branches is the area of a triangle consisting of a projection of the inlet valve axes 3a, 4a and the inlet channel separation point 30 and / or the outlet valve axes 5a, 6a and the outlet channel connection point 31 into the plane in or parallel to the cylinder head density plane (corresponding to FIG the leaf level) between 5 percent and 15 percent, preferably 7 percent of the bore area.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ATA50203/2015A AT516161B1 (de) | 2015-03-13 | 2015-03-13 | Brennkraftmaschine mit zumindest einem zylinder |
| PCT/AT2016/050059 WO2016145467A1 (de) | 2015-03-13 | 2016-03-14 | Brennkraftmaschine mit zumindest einem zylinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3268597A1 true EP3268597A1 (de) | 2018-01-17 |
| EP3268597B1 EP3268597B1 (de) | 2020-11-04 |
Family
ID=55447307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP16713721.5A Active EP3268597B1 (de) | 2015-03-13 | 2016-03-14 | Brennkraftmaschine mit zumindest einem zylinder |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP3268597B1 (de) |
| JP (1) | JP6688312B2 (de) |
| CN (1) | CN107567538B (de) |
| AT (1) | AT516161B1 (de) |
| WO (1) | WO2016145467A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6969186B2 (ja) * | 2017-07-19 | 2021-11-24 | スズキ株式会社 | エンジン及び自動二輪車 |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1800774A1 (de) * | 1968-10-03 | 1970-06-25 | Maschf Augsburg Nuernberg Ag | Einrichtung an fluessigkeitsgekuehlten Zylinderdeckeln von Brennkraftmaschinen |
| AT326422B (de) * | 1971-08-03 | 1975-12-10 | List Hans | Zylinderkopf für eine brennkraftmaschine |
| JPS5825860B2 (ja) * | 1980-06-25 | 1983-05-30 | 三菱重工業株式会社 | 内燃機関のシリンダヘツド |
| JPS58180349U (ja) * | 1982-05-28 | 1983-12-02 | 株式会社小松製作所 | デイ−ゼルエンジン用シリンダヘツド構造 |
| JPS60162241U (ja) * | 1984-04-06 | 1985-10-28 | ヤンマーディーゼル株式会社 | シリンダヘツド構造 |
| DE3710453A1 (de) * | 1987-03-30 | 1988-10-13 | Kloeckner Humboldt Deutz Ag | Mehrfachzylinderkopf fuer eine diesel-brennkraftmaschine |
| SE470267B (sv) * | 1992-12-23 | 1993-12-20 | Saab Scania Ab | Cylinderhuvud för förbränningsmotor |
| SE506129C2 (sv) * | 1992-12-23 | 1997-11-10 | Scania Cv Ab | Cylinderhuvud för förbränningsmotor |
| DE19735183A1 (de) * | 1997-08-14 | 1999-02-18 | Deutz Ag | Vierventil-Zylinderkopf einer Brennkraftmaschine |
-
2015
- 2015-03-13 AT ATA50203/2015A patent/AT516161B1/de active
-
2016
- 2016-03-14 WO PCT/AT2016/050059 patent/WO2016145467A1/de not_active Ceased
- 2016-03-14 JP JP2017548286A patent/JP6688312B2/ja active Active
- 2016-03-14 EP EP16713721.5A patent/EP3268597B1/de active Active
- 2016-03-14 CN CN201680025138.4A patent/CN107567538B/zh active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN107567538B (zh) | 2020-07-07 |
| CN107567538A (zh) | 2018-01-09 |
| WO2016145467A1 (de) | 2016-09-22 |
| JP6688312B2 (ja) | 2020-04-28 |
| JP2018507984A (ja) | 2018-03-22 |
| EP3268597B1 (de) | 2020-11-04 |
| AT516161A4 (de) | 2016-03-15 |
| AT516161B1 (de) | 2016-03-15 |
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