Device for adjusting the relative angle of rotation of a shaft to a drive wheel, especially the camshaft of an internal combustion engine

Claim 3

A device according to claim 1, wherein the linear motor and the hydraulic pump are arranged coaxially to the shaft with the adjustable angle of rotation on a detachably constructed engine power section cover, and together therewith form a structural or assembly unit.

Claim 4

A device according to claim 1 characterized in that the hydraulic pump is a radial piston pump.

Claim 5

A device according to claim 1, wherein the linear motor is a cylinder/piston unit.

Claim 6

A device according to claim 3, wherein the radial piston pump is arranged on the engine power section cover on the shaft side, and the pump rotor is disposed in a rotatably movable manner on the periphery of the cylinder of the linear motor cylinder/piston unit.

Claim 7

A device according to claim 3, wherein the radial piston pump is provided which is acted upon on the inside and has a pump housing constructed in the engine power section cover, is open on the shaft side and receives the pump rotor which, by way of a plug-in arrangement, is in a shaft-side driving connection.

Claim 8

A device according to claim 4, wherein a separate cylinder of the linear motor, which is constructed with different outside diameters, is arranged in a step bore of the engine power section cover, and the cylinder, on the shaft side, is equipped with a flanged bush for the slidably movable bearing of the pump rotor which receives radially displaceable delivery pistons, and the flanged bush has intake-side and delivery-side control openings distributed along the periphery for connection with a respective inflow and outflow chamber arranged in the cylinder wall.

Claim 9

A device according to claim 7, wherein the inflow chamber and the outflow chamber are each connected with an essentially axially directed duct arranged in the cylinder wall, and each duct, by way of a circumferential groove constructed on a periphery of the cylinder of the linear motor cylinder/piston unit is connected with a pipe arranged in the engine power section cover.

Claim 10

A device according to claim 8, wherein, on the shaft-side end, a flanged nut closes off the intake duct and the delivery duct and is assigned to the cylinder of the linear motor, said flanged nut, with its outer edge area, being used for axially securing the flanged bushing on the cylinder.

Claim 11

A device according to claim 6, wherein a generator wheel is operatively associated with axial play to the pump housing open on the shaft side.

Claim 12

A device according to claim 10, wherein the generator wheel is in one piece with the pump rotor.

Claim 13

A device according to claim 8, wherein the pipe in the engine power section cover is connected with a lubricant circulating system of the engine.

Claim 14

A device according to claim 2, wherein pressure pipes provided in the engine power section cover for two-sided acting upon a piston of the linear motor configured with different surfaces, are controlled by a timing valve, an annulus provided between control pistons of a control rod of the timing valve being operatively connected with a discharge pipe leading out on the machine side.

Claim 15

A device according to claim 8, wherein an accumulator is arranged on the engine power section cover which, by way of a connecting line, is connected in a medium-carrying manner with the circumferential groove assigned to the duct in the cylinder wall.

Claim 16

A device according to claim 2, wherein the structural or assembly unit comprising the actuating arrangement with the linear motor and the hydraulic pump as well as the engine power section cover comprises a coupling link of the adjusting mechanism which is connected by way of a coupling rod and adjusts the angle between the shaft and the drive wheel.

Claim 17

A device according to claim 1, wherein the hydraulic pump is arranged on the shaft with the adjustable angle of rotation, and the pump housing is non-rotatably held on the cover side by a plug-in arrangement.

Claim 18

A device according to claim 1, wherein the linear motor, the hydraulic pump and a control device are arranged in a separate part which can be connected with the engine power section cover.