Valve adjustment mechanism for internal combustion engine

Claim 2

A valve-adjusting mechanism for internal combustion engines which includes a drive shaft, a means for converting the rotary movement of the drive shaft into an up and down movement actuating a valve, and control means for changing the valve lift in dependence on at least one of rotational speed and load of an internal combustion engine, characterized in that the drive shaft, to provide the converting means, is constructed as a crankshaft reciprocating a connecting rod pivotally connected thereto between a fixed support wall means and a pivotally supported wedge-shaped adjusting means extending at an acute angle to the fixed support wall means so that the adjusting means carries out an up and down movement as a result of the wedging effect and is operative to transmit the same onto the valve.

Claim 3

A valve-adjusting mechanism according to claim 1, characterized in that the control means changes the valve lift as a function of both rotational speed and load of an internal combustion engine.

Claim 4

A valve-adjusting mechanism according to claim 1, characterized in that the stroke and opening period of the valve is changed by the displacement of the wedge-shaped adjusting means without changing the position of the axis of symmetry for the up and down movement in the control diagram.

Claim 5

A valve-adjusting mechanism according to claim 3, characterized in that an essentially axially displaceable adjusting member forming part of the control means is provided for the displacement of the wedge-shaped adjusting means.

Claim 6

A valve-adjusting mechanism according to claim 4, characterized in that the adjusting means carries a roller at its end acting on the valve.

Claim 7

A valve-adjusting mechanism according to claim 5, characterized in that the connecting rod carries a roller which is arranged between the fixed support wall means and the wedge-shaped adjusting means.

Claim 8

A valve-adjusting mechanism according to claim 6, characterized in that the support wall means is lined along its contact surface with respect to the reciprocating connecting rod with a noise-absorbing wear-resistant layer.

Claim 9

A valve-adjusting mechanism according to claim 7, characterized in that the support wall means is adjustable for purposes of compensating the play.

Claim 10

A valve-adjusting mechanism according to claim 8, characterized in that the control means changes the valve lift as a function of both rotational speed and load of an internal combustion engine.

Claim 11

A valve-adjusting mechanism according to claim 1, characterized in that an essentially axially displaceable adjusting member forming part of the control means is provided for the displacement of the wedge-shaped adjusting means.

Claim 12

A valve-adjusting mechanism according to claim 1, characterized in that the adjusting means carries a roller at its end acting on the valve.

Claim 13

A valve-adjusting mechanism according to claim 11, characterized in that the connecting rod carries a roller which is arranged between the fixed support wall means and the wedge-shaped adjusting means.

Claim 14

A valve-adjusting mechanism according to claim 1, characterized in that the support wall means is lined along its contact surface with respect to the reciprocating connecting rod with a noise-absorbing wear-resistant layer.

Claim 15

A valve-adjusting mechanism according to claim 1, characterized in that the support wall means is adjustable for purposes of compenating the play.

Claim 16

A valve-adjusting mechanism according to claim 1, characterized in that the connecting rod carries a roller which is arranged between the fixed support wall means and the wedge-shaped adjusting means.

Claim 17

A valve-adjusting mechanism according to claim 3, characterized in that the connectinG rod includes a segment-like part, the connecting rod being supported during its to and fro movement, on the one hand, with its segment-like part against the fixed support wall means.

Claim 18

A valve-adjusting mechanism according to claim 16, with a roller supported in a slot of the adjusting member acting on a valve stem of the valve, characterized in that the adjusting means which is constructed ball-like at one end and supported in a piston means, is held by a spring against an eccentric bolt means.

Claim 19

A valve-adjusting mechanism according to claim 17, characterized in that an adjustable valve cap engages in the slot and guides the adjusting means.

Claim 20

A valve-adjusting mechanism according to claim 18, with a bearing pin, characterized in that the eccentric bolt means includes a substantially cylindrical eccentric surface and the effective working surface of the eccentric bolt means is disposed within the external contours of the bearing pin.

Claim 21

A valve-adjusting mechanism according to claim 1, characterized in that the connecting rod includes a segment-like part, the connecting rod being supported during its to and fro movement, on the one hand, with its segment-like part against the fixed support wall means.

Claim 22

A valve-adjusting mechanism according to claim 1, with a roller supported in a slot of the adjusting member acting on a valve stem of the valve, characterized in that the adjusting means which is constructed ball-like at one end and supported in a piston means, is held by a spring against an eccentric bolt means.

Claim 23

A valve-adjusting mechanism according to claim 21, characterized in that an adjustable valve cap engages in the slot and guides the adjusting means.

Claim 24

A valve-adjusting mechanism according to claim 21, with a bearing pin, characterized in that the eccentric bolt means includes a substantially cylindrical eccentric surface and the effective working surface of the eccentric bolt means is disposed within the external contours of the bearing pin.

Claim 25

An internal combustion engine comprising: a cylinder head means, a valve means disposed in said cylinder head means, a crankshaft means rotatably supported in said cylinder head means, means for converting the rotary movement of said crankshaft into a reciprocating movement for actuating the valve means, control means for changing the lift of the valve means in dependence upon at least one of rotational speed and load of the internal combustion engine, a support means disposed on said cylinder head, a pivotally mounted wedge-shaped adjusting means for adjusting said valve means, said valve means extending at an acute angle to said support means, said converting means including a connecting rod pivotally connected to said crankshaft means and reciprocable between said support means and said adjusting means whereby said adjusting means carries out a reciprocating movement as a result of the wedge-shape thereof and transmit the reciprocating movement to said valve means.

Claim 26

An internal combustion engine comprising: a cylinder head means, a valve means disposed in said cylinder head means, a crankshaft means rotatably supported in said cylinder head means, means for converting the rotary movement of said crankshaft into a reciprocating movement for actuating the valve means, control means for changing the lift of the valve means in dependence upon at least one of rotational speed and load of the internal combustion engine, a support means disposed on said cylinder head, a pivotally mounted wedge-shaped adjusting means for adjusting said valve means, said valve means extending at an acute angle to said support means, said converting means including a connecting rod pivotally connected to said crankshaft means and reciprocable between said support means and said adjusting means whereby said adjusting means carries out a reciprocating movement as a result of the wedge-shape thereof and transmit the reciprocating movement to said valve means.

Claim 27

An internal combustion engine according to claim 24, wherein said control means changes the valve lift as a function of both rotational speed and load of the internal combustion engine.

Claim 28

An internal combustion engine according to claim 24, wherein said control means includes an essentially axially displaceable adjusting member for displacing said wedge-shaped adjusting means.

Claim 29

An internal combustion engine according to claim 26, wherein a roller means is provided on an end of said adjusting means acting on said valve means.

Claim 30

An internal combustion engine according to claim 27, wherein a roller means is provided on said connecting rod between said support means and said wedge-shaped adjusting means.

Claim 31

An internal combustion engine according to claim 28, wherein a noise-absorbing wear-resistant layer is provided on said support means along a surface thereof which contacts the reciprocating connecting rod.

Claim 32

An internal combustion engine according to claim 29, wherein means are provided for adjusting said support means to compensate for play in said valve means.

Claim 33

An internal combustion engine according to claim 24, wherein said connecting rod includes a segment-shaped portion engaging said support means during the reciprocating movement of said connecting rod.

Claim 34

An internal combustion engine according to claim 31, wherein said valve means includes a valve stem, said adjusting means includes a slot having disposed therein a roller means acting on said valve stem and a ball-shaped portion provided at one end thereof, a piston means is provided for supporting said ball-shaped portion and wherein an eccentric bolt means is provided, said adjusting means being biased against said eccentric bolt means by a spring means.

Claim 35

An internal combustion engine according to claim 32, whherein an adjustable valve cap means is disposed in said slot and guides said adjusting means.

Claim 36

An internal combustion engine according to claim 33, wherein a bearing pin is provided, said eccentric bolt means includes a substantially cylindrical eccentric surface and the effective working surface of the eccentric bolt means is disposed within the external contours of said bearing pin.

Claim 37

An internal combustion engine according to claim 24, wherein said valve means includes a valve stem, said adjusting means includes a slot having disposed therein a roller means acting on said valve stem and a ball-shaped portion provided at one end thereof, a piston means is provided for supporting said ball-shaped portion, and wherein an eccentric bolt means is provided, said adjusting means being biased against said eccentric bolt means by a spring means.

Claim 38

An internal combustion engine according to claim 35, wherein an adjustable valve cap means is disposed in said slot and guides said adjusting means.

Claim 39

An internal combustion engine according to claim 35, wherein a bearing pin is provided, said eccentric bolt means includes a substantially cylindrical eccentric surface and the effective working surface of said eccentric bolt means is disposed within the external contours of said bearing pin.

Claim 40

An internal combustion engine according to claim 24, wherein a noise-absorbing wear-resistant layer is provided on said support means along a surface thereof which contacts the reciprocating connecting rod.

Claim 41

An internal combustion engine according to claim 24, wherein a roller means is provided on said connecting rod between said support means and said wedge-shaped adjusting means.

Claim 42

An internal combustion engine according to claim 24, wherein a roller means is provided on an end of said adjusting means acting on said valve means.