DE202010007271U1 - Motorcycle with compact internal combustion engine - Google Patents

Abstract

A motorcycle having an internal combustion engine whose cylinder arrangement is a VR cylinder arrangement with gap-mounted, telescoped cylinder rows, wherein the crank drive acts on the crankshaft in a restricted manner, so that the two planes formed by the cylinder axes of each cylinder row intersect below the crankshaft axis, wherein there is one common cylinder head (1) for every two rows of cylinders, characterized in that the cylinder head (1) per cylinder comprises a group (4) of two, three, four or five gas ducts, the group (4) comprising at least one outlet duct (2) and at least one inlet channel (3), and wherein the geometric arrangement of the inlet channels (3) of a group (4) is the same for all cylinders.

Description

Introduction:

The The invention relates to a motorcycle with a compact internal combustion engine.

From the publication DE 10 2004 042 765 B4 Such a motorcycle is known. Its internal combustion engine comprises a VR cylinder arrangement with a gapped cylinder row, the internal combustion engine being installed with a transverse crankshaft. The crank mechanism also acts constrained on the crankshaft so that the two planes formed by the cylinder axes of each row of cylinders intersect below the crankshaft axis.

For Two cylinder rows each have a common cylinder head. This includes in one embodiment, three camshafts.

Other design features of the cylinder head are in the DE 10 2004 042 765 B4 not described. In particular, it does not show how the gas channels are arranged and designed.

Except from the above-mentioned document are so far no Motorcycles with internal combustion engine with VR cylinder arrangement have become known.

adequately It is known that to achieve high performance in motorcycle engines as short and straight gas ducts in the cylinder head needed.

From the publication EP 1 146 219 A1 already shows the arrangement of gas ducts in a cylinder head of a VR engine. Inlet and outlet channels are guided largely horizontally, ie transversely to the cylinder axis. All exhaust ports open on one side of the cylinder head, all intake ports on the opposite side. The outlet channels of each displaced to the rear row of cylinders are considerably longer than those of the front lying. Also, the inlet channels have these differences in length, but are arranged mirrored.

These Channel arrangement is less suitable for motorcycle engines, since especially with the very unequal inlet channels none high power density can be achieved.

task of the subject invention is, for a generic Motorcycle with internal combustion engine with VR cylinder arrangement to provide a suitable cylinder head with the big one Motor performance can be achieved.

General description of the invention:

The Solution is provided by the motorcycle according to claim 1 or Second

advantageous Embodiments are in the dependent claims specified.

According to claim 1, the object is achieved in that the cylinder head per cylinder a group of two, three, four or five Gas channels, wherein the group has at least one outlet channel and at least one inlet channel, and wherein the geometric Arrangement of the inlet channels of a group in all cylinders is equal to.

That the geometric arrangement of the inlet channels at all Groups equal, means that shape and course of the intake channel at an intake valve or the intake ports in a plurality of intake valves of a cylinder are the same for all cylinders. This means in particular that this same geometric arrangement of the inlet channels at the cylinders of the rear row of cylinders equal to the geometric ones Arrangement of the inlet ducts of the front cylinder bank is. In this case, the intake ports in the cylinders the rear row of cylinders aligned in the same direction be like the intake ports of the front cylinder bank, but they can also be arranged mirrored to each other. Also for the outlet channels is the same arrangement at all Cylinders advantageous. In all of these arrangements it is also advantageous if the dimensions of the gas channels of each cylinder are the same.

By Using the same geometric arrangement of the gas channels at the front and the rear cylinder row can same flow conditions for all cylinders be achieved, so that a more even engine over the whole speed band is ensured. With the use is the same shaped inlet channels in all cylinders a high engine performance and the greatest possible Synchronism and smoothness of the engine achieved.

A describes another solution according to the invention Claim 2 such that when lying transversely crankshaft (transverse installation) the intake ports of the rear cylinder bank behind the rear camshaft and intake ports of the front Cylinder row are arranged in front of the rear camshaft or with longitudinal crankshaft (longitudinal installation) the inlet channels of a row of cylinders to the left of an outer Camshaft and the intake ports of the other cylinder bank are arranged to the right of this camshaft.

The arrangement of the inlet channels described on both sides of the inlet-side camshaft ensures that inlet channels with the same Length and same shape are used, which are also relatively short, which also a high engine performance and the greatest possible synchronization and smoothness of the engine is achieved.

In a particularly advantageous embodiment of the invention Solutions according to the claims 1 and 2, the engine comprises six cylinders.

A favorable development of the solution according to claim 2 is also that with several identical valves per cylinder the Inlet and outlet ports of a cylinder form a group and the geometric arrangement or shape of the Inlet channels of a group is the same for all cylinders.

Advantageous It is also that the geometric arrangement (shape) of the outlet channels a group is the same for all cylinders.

In a further embodiment comprises the inventive Internal combustion engine two, three, four or five valves each cylinder and one or two spark plugs per cylinder. There may be two, three or four camshafts for be installed per cylinder head. The gas channels of the intake valves of a cylinder can be merged into one channel become. In addition, the use has been particularly advantageous of two intake valves and one exhaust valve per cylinder. When using multiple exhaust valves per cylinder, it is also beneficial the outlet ducts belonging to the individual valves a cylinder to merge to an outlet channel.

The Internal combustion engine is in one embodiment with a transverse crankshaft be installed in the motorcycle, which also is referred to as transverse installation. Then the cylinder head covers a front Cylinder row and a rear cylinder row.

at another embodiment, the internal combustion engine with a longitudinal crankshaft installed in the motorcycle, which is referred to as longitudinal installation. Then the cylinder head covers one left cylinder row and a right cylinder row.

are advantageously a plurality of intake valves per cylinder, ie provided in a group, then branch to the intake valves belonging channels of a cylinder from a common Channel. If several exhaust valves are provided, they will run the outlet valves belonging outlet channels of Cylinder to an outlet channel together.

advantageously, the inlet ducts protrude upwards and run crosswise the exhaust ducts are bent forwards or backwards. at Longitudinal installation run the exhaust ducts bent left or right.

at Transverse mounting are also the forward-curved outlet channels the rear cylinder bank between the forwardly bent exhaust ducts arranged the front cylinder row, wherein the outlet channel of the outermost Cylinders of the rear row of cylinders next to the outlet of the before lying cylinder of the front cylinder bank arranged is.

Of the Cylinder head can run with one, two or three camshafts be, with the versions with two or three camshafts are particularly favorable. With three camshafts actuated the middle camshaft intake valves of a cylinder bank and the exhaust valves of the other cylinder bank. These valves are then arranged inclined to each other. The front camshaft operates only the exhaust valves of the front cylinder bank, the rear camshaft only the intake valves of the rear cylinder bank. The valves can be directly via bucket tappets but also be operated via rocker arms.

at Use of two camshafts with transverse installation and aligned Channel groups can be the inlet channels of the rear Cylinder row behind the rear camshaft and the intake ports the front cylinder row between the front and the rear Camshaft be arranged. Again, the valves can directly over tappets but also over Rocker be operated.

at Use of two camshafts during longitudinal installation the intake ports of a cylinder bank to the left of a camshaft, the intake ports of the other cylinder bank to the right of this camshaft.

at Use of two camshafts with mirrored channel groups are all six intake ports between the two camshafts arranged and protrude to the top.

alternative when using three camshafts with transverse installation the intake ports of the front cylinder bank behind the middle and in front of the rear camshaft and the intake ports the rear row of cylinders arranged behind the rear camshaft be.

at Longitudinal installation is then the inlet channels of the one Cylinder row arranged next to the middle camshaft, the intake ports the other cylinder row outside of on the same Side arranged camshaft.

When cross installation open conveniently all Exhaust ports in the vehicle front longitudinal direction from the cylinder head and the mouths of the exhaust ducts of the rear cylinder row are offset from those of the front cylinder row in the vehicle longitudinal direction to the rear.

at Longitudinal installation open all outlet channels left or right.

Cheap is also that the channel dimensions of the gas channels at are equal to all groups.

The Alignment of the channel groups for the front and the rear Cylinder row can be the same, but it can also be mirrored. In mirrored arrangement of the groups all inlet channels above, center out of the cylinder head and the outlet channels open on both sides of the cylinder head. Vice versa All outlet channels can also be centered upwards run and the intake ports on both sides of the cylinder head laterally lead.

run the exhaust ducts bent to the side of the cylinder head, then they pass under the camshafts, which flow in the direction pass through, d. H. they are below the middle and behind lying camshaft when using three camshafts or only under one of the two camshafts when using two Camshafts.

The Spark plugs are advantageously in the middle between arranged the valves of the cylinder and protrude upwards.

The Internal combustion engine according to the invention can also include cylinder in W arrangement, in which case four rows of cylinders are available with one cylinder head each for two cylinder rows, as a total of two cylinder heads.

Description of exemplary embodiments:

In the figures described below are exemplary embodiments of the motorcycle according to the invention shown. Especially the figures show:

1 Image: View of the cylinder head from above

2 : View of the cylinder head from the front and from the top

3 : View of the cylinder head from the front and from the right (seen in vehicle longitudinal axis)

4 : View of the cylinder head from the back and from the right (seen in vehicle longitudinal axis)

5 : View of the cylinder head from the left (seen in vehicle longitudinal axis)

6 : View of the cylinder head from the front

7 : View of a cylinder head with 2 camshafts and exhaust ports opening on both sides

The Components mentioned in the text are identified by the following reference symbols:

1

cylinder head

2

exhaust port

3

inlet channel

4

channel group

5

intake valve

6

outlet valve

7

spark plug

8th

Front or left or right camshaft

9

middle camshaft

10

Rear or right or left camshaft

Further Details are the following drawings of possible design examples the Kraftradverbrennungskraftmaschine invention refer to.

Depending on the installation position of the engine in the motorcycle is camshaft ( 8th ) at the front with transverse installation or left or right with longitudinal installation. Conversely, camshaft ( 10 ) at the rear for transverse installation or left or right for longitudinal installation.

1 shows the view of an embodiment of the cylinder head ( 1 ) of the six-cylinder Kraftradverbrennungskraftmaschine invention.

The cylinder head ( 1 ) has three camshafts. The outlet channels ( 2 ) run under the middle and the preceding camshaft and open, if the engine is installed with transverse crankshaft (transverse mounting), in the vehicle longitudinal direction to the front. With a longitudinal crankshaft (longitudinal installation) open the outlet channels ( 2 ) left or right.

All outlet channels ( 2 ) have the same geometry and the same dimensions and are directed to the front (with longitudinal installation to the side), wherein the outlet channels ( 2 ) of the rear row of cylinders are offset to the rear and between or next to the intake valves ( 5 ) open the cylinder of the front cylinder row. All inlet channels ( 3 ) also have the same geometry and the same dimensions and protrude up and obliquely behind (in transverse installation) or opposite to the Outlet channel mouths (for longitudinal installation). The inlet channels ( 3 ) and the outlet channel ( 2 ) of a cylinder each form a channel group ( 4 ). The cylinder head ( 1 ) also includes two inlet valves ( 5 ) and an outlet valve ( 6 ) per cylinder. In the figures belong to a channel group ( 4 ) each two to a unifying inlet channels and an outlet channel, which is indicated by three reference lines. The to the two inlet valves ( 5 ) of a cylinder belonging inlet channels ( 3 ) unite into one inlet channel ( 3 ), which is led upwards.

The inlet channels ( 3 ) of the rear cylinder bank are behind the rear camshaft ( 10 ), the inlet channels ( 3 ) of the front cylinder bank are behind the middle camshaft ( 9 ) and in front of the rear camshaft ( 10 ) led upwards. The outlet channels ( 2 ) of the rear cylinder row are below the middle and the front camshaft ( 8th . 9 ) are arranged and they are led forward under these two camshafts. The camshaft drive is arranged in the vehicle's longitudinal axis on the right. For longitudinal installation, the rear and front camshafts ( 8th . 10 ) the right and the left or vice versa. Ale valves are actuated directly from the camshafts via bucket tappets. The spark plugs ( 7 ) are each centered between the two inlet valves ( 5 ) and the outlet valve ( 6 ) arranged. The two intake valves ( 5 ) of a cylinder are arranged inclined to each other so that the intersection of their axes is in the combustion chamber of the cylinder.

2 shows the view of the cylinder head ( 1 ) from the front and from above (with transverse installation). Each cylinder comprises two inlet valves ( 5 ) and an outlet valve ( 6 ), all directly via bucket tappets from the camshafts ( 8th . 9 . 10 ). The inlet channels ( 3 ) of the two inlet valves ( 5 ) branch each from a common, from above incoming channel ( 3 ). The middle camshaft ( 9 ) actuates the inlet valves ( 5 ) of the front cylinder bank and the exhaust valves ( 6 ) of the rear cylinder bank (with transverse installation). For longitudinal installation, the middle camshaft ( 9 ) the inlet valves ( 5 ) of a lateral cylinder bank and the exhaust valves ( 6 ) of the opposite row of cylinders. The spark plugs ( 7 ) are each between the exhaust valve ( 6 ) and the two inlet valves ( 5 ) arranged. In addition shows 2 also the arrangement of the inlet channels ( 3 ) of the rear row of cylinders behind the rear camshaft ( 10 ) and the arrangement of the inlet channels ( 3 ) of the front cylinder row between the rear and middle camshaft. The front camshaft ( 8th ) operates only the exhaust valves ( 6 ) of the front cylinder bank.

In 3 is the curved course of the outlet channels ( 2 ) of the front cylinder bank. The valves are arranged diagonally and are actuated via cup tappets directly from the camshafts.

In 4 is the s-shaped course of the inlet channels ( 3 ) and their branch just above the valve seats of the intake valves ( 5 ). The rear camshaft ( 10 ) actuates the inlet valves ( 5 ) of the rear cylinder bank.

5 shows the cylinder head ( 1 ) viewed from the left. The outlet channels ( 2 ) are bent forward by about 90 degrees. The inlet channels ( 3 ) are S-shaped backwards and upwards.

The spark plugs ( 7 ) are arranged vertically. The middle camshaft ( 9 ) actuates the inlet valves ( 5 ) of the front cylinder bank and the exhaust valves ( 6 ) of the rear cylinder bank. The actuated by the central camshaft valves are inclined to each other.

6 shows the view of the cylinder head from the front. All outlet channels ( 2 ) are arranged at the same height. Also all camshafts ( 8th . 9 . 10 ) are arranged at the same height, in 6 is therefore completely only the front camshaft 8th to recognize. From camshaft ( 9 ) is in the figure on the right side of the left parts of the central camshaft ( 9 ) (viewed in the vehicle longitudinal direction).

7 shows a further embodiment of the cylinder head according to the invention ( 1 ) for a VR6 engine. The cylinder head comprises two camshafts ( 8th . 10 ). The outlet channels ( 2 ) open on both sides of the cylinder head ( 1 ): Three outlet channels ( 2 ) open on the left, three outlet channels ( 2 ) lead to the right. All six inlet channels ( 3 ) are between the two camshafts ( 8th . 10 ) and rise upwards. Outlet channel ( 2 ) and inlet channel ( 3 ) of a cylinder form a channel group ( 4 ), this includes only two channels in this embodiment. The channel groups ( 4 ) of a row of cylinders are mirror-inverted to the channel groups ( 4 ) of the other row of cylinders. The channel dimensions of all channel groups are the same. The camshafts ( 8th . 10 ) actuate the associated valves directly via bucket tappets. The spark plug ( 7 ) is arranged laterally between inlet and outlet valve.

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 102004042765 B4 [0002, 0004]
• - EP 1146219 A1 [0007]

Claims (23)

A motorcycle with an internal combustion engine whose cylinder arrangement is a VR cylinder arrangement with gap-mounted, telescoped cylinder rows, wherein the crank drive acts on the crankshaft in a restricted manner, so that the two planes formed by the cylinder axes of each cylinder row intersect below the crankshaft axis, wherein a common cylinder head ( 1 ) is present for each two rows of cylinders, characterized in that the cylinder head ( 1 ) one group per cylinder ( 4 ) of two, three, four or five gas channels, the group ( 4 ) at least one outlet channel ( 2 ) and at least one inlet channel ( 3 ), and wherein the geometric arrangement of the inlet channels ( 3 ) of a group ( 4 ) is the same for all cylinders. A motorcycle with an internal combustion engine whose cylinder arrangement is a VR cylinder arrangement with gap-mounted, telescoped cylinder rows, wherein the crank drive acts on the crankshaft in a restricted manner, so that the two planes formed by the cylinder axes of each cylinder row intersect below the crankshaft axis, wherein a common cylinder head ( 1 ) is present for each two rows of cylinders and wherein a cylinder head ( 1 ) has two or three camshafts, characterized in that at transversely lying crankshaft (transverse mounting), the inlet channels ( 3 ) of the rear row of cylinders behind the rear camshaft ( 10 ) and the inlet channels ( 3 ) of the front cylinder bank in front of the rear camshaft ( 10 ) are arranged or with longitudinal crankshaft (longitudinal installation) the inlet channels ( 3 ) of a cylinder bank to the left of an outer camshaft and the intake ports ( 3 ) of the other row of cylinders are arranged to the right of this camshaft. Motorcycle according to claim 2, characterized in that the inlet channel ( 3 ) or the inlet channels ( 3 ) and the outlet channel ( 2 ) or the outlet channels ( 2 ) of a cylinder a group ( 4 ) and the geometric arrangement of the one inlet channel ( 3 ) or the inlet channels ( 3 ) of a group ( 4 ) is the same for all cylinders. Motorcycle according to claim 1, 2 or 3, characterized in that the geometric arrangement of the outlet channels ( 2 ) of a group ( 4 ) is the same for all cylinders. Motorcycle according to one of the preceding claims, characterized in that the internal combustion engine is installed with a transverse crankshaft and from the cylinder head ( 1 ) belonging cylinder rows one is the front cylinder row and the other is the rear cylinder row. Motorcycle according to one of the preceding claims, characterized in that the internal combustion engine is installed with a longitudinal crankshaft and from the cylinder head ( 1 ) belonging cylinder rows one is the left cylinder row and the other is the right cylinder row. Motorcycle according to one of the preceding claims, characterized in that in a group to the intake valves ( 5 ) originate from a common channel and / or belonging to the exhaust valves outlet channels ( 2 ) to an outlet channel ( 2 ) converge. Motorcycle according to one of the preceding claims, characterized in that the inlet channels ( 3 ) protrude upwards and with transverse installation the outlet channels ( 2 ) bent forwards or backwards. Motorcycle according to one of the preceding claims, characterized in that the inlet channels ( 3 ) protrude upwards and in longitudinal installation the outlet channels ( 2 ) are bent to the left or to the right. Motorcycle according to claim 8, characterized in that the forwardly bent outlet channels ( 2 ) of the rear row of cylinders between the forwardly bent outlet channels ( 2 ) of the front row of cylinders are arranged, wherein the outlet channel ( 2 ) of the outermost cylinder of the rear cylinder row next to the outlet channel ( 2 ) of the preceding cylinder of the front cylinder row is arranged. Motorcycle according to one of the preceding claims, characterized in that the cylinder head ( 1 ) has two or three camshafts. Motorcycle according to claim 11, characterized in that with three camshafts the middle camshaft ( 9 ) the inlet valves ( 5 ) of a cylinder bank and the exhaust valves ( 6 ) of the other row of cylinders. Motorcycle according to claim 11 or 12, characterized in that the inlet channels ( 3 ) of the rear row of cylinders behind the rear camshaft ( 10 ) are arranged. Motorcycle according to claim 11, 12 or 13, characterized in that the inlet ducts ( 3 ) of the front cylinder row between the front and rear camshafts ( 8th . 10 ) are arranged. Motorcycle according to claim 11 or 12, characterized in that the inlet channels ( 3 ) of the whose cylinder bank behind the middle and in front of the rear camshaft and the inlet ducts ( 3 ) of the rear cylinder bank are arranged behind the rear camshaft. Motorcycle according to one of the preceding claims, characterized in that all the outlet channels ( 2 ) in the vehicle longitudinal direction at the front or to a side of the cylinder head ( 1 ) and the mouths of the outlet channels ( 2 ) of the rear cylinder row are offset from those of the front cylinder row to the rear. Motorcycle according to one of the preceding claims, characterized in that the channel dimensions of the gas channels in all groups ( 4 ) are the same. Motorcycle according to one of the preceding claims, characterized in that all groups ( 4 ) are aligned for the front and the rear row of cylinders in the vehicle longitudinal direction equal or aligned to one side the same. Motorcycle according to one of the preceding claims, characterized in that all inlet channels ( 3 ) at the top or in the vehicle longitudinal direction at the rear or to a side from the cylinder head ( 1 ). Motorcycle according to one of the preceding claims, characterized in that the orientation of the groups ( 4 ) are mirrored to each other in transverse installation for the front and the rear or in longitudinal installation left and right cylinder row. Motorcycle according to claim 20, characterized in that the outlet channels ( 2 ) either in the vehicle longitudinal direction with transverse mounting front and rear or in the longitudinal installation left and right from the cylinder head ( 1 ) or in the middle between the front and rear row of cylinders upwards. Motorcycle according to claim 20, characterized in that the inlet channels ( 3 ) either in the vehicle longitudinal direction with transverse mounting front and rear or in the longitudinal installation left and right from the cylinder head ( 1 ) or in the middle between the front and rear row of cylinders upwards. Motorcycle according to one of the preceding claims, characterized in that the curved outlet channels ( 2 ) run under the camshafts.