Camshaft adjuster for an internal combustion engine having hydraulic medium guides
A camshaft adjuster for an internal combustion engine having hydraulic medium guides. The adjuster can include a setting unit that can be controlled by a control unit using these guides in the adjuster, wherein the setting unit is for adjusting an angle of a camshaft. This setting unit has an inner body coupled to the camshaft so as to rotate with it, and an outer body that is mounted to rotate relative to the camshaft via a drive connection which runs from a crankshaft to the camshaft. The camshaft has at least one insert part permanently inserted camshaft wherein these two components together form at least one hydraulic medium guide at least in partial regions over its axial length. This design is to create a camshaft adjuster which is in interaction with a camshaft having an insert part so that there is a simple and reliable supply of hydraulic medium to the camshaft adjuster and in particular to its control device.
1. A camshaft adjuster for an internal combustion engine comprising:
a) a camshaft;
b) a setting unit comprising:
i) an inner body coupled to said camshaft so as to rotate with it; and
ii) an outer body that is coupled to said inner body and mounted in an outer region relative to said inner body and said camshaft;
c) a control unit for adjusting an angle of said camshaft; and
d) at least one insert part disposed inside an inner region of said camshaft, wherein said insert is formed from a sheet metal reinforced plastic component, wherein said insert part and said camshaft form a plurality of hydraulic medium guides, wherein at least one hydraulic medium guide is in communication with said control unit and wherein said setting unit is in communication with least one hydraulic medium guide so that said setting unit can be controlled by said control unit to set an angle of said camshaft and wherein said hydraulic medium guides are formed non-coaxially such that said hydraulic medium guides form a variable channel cross section across an axial length of said camshaft.
2. The camshaft adjuster as in claim 1 , wherein said at least one hydraulic medium guide is directly connected to said control unit.
3. The camshaft adjuster as in claim 1 , further comprising a transfer unit wherein said at least one hydraulic medium guide is coupled to said control unit via said transfer unit.
4. The camshaft adjuster as in claim 1 , further comprising a channel disposed outside of said camshaft, wherein said channel is in communication with said at least one hydraulic medium guide.
5. The camshaft adjuster as in claim 1 , wherein said insert part is joined to said camshaft by at least one of the following methods: thermal joining, gluing, welding, soldering, internal high pressure forming, shrinking, or pressing with excess dimension.
6. The camshaft adjuster as in claim 1 , wherein said inner body is inserted onto said camshaft to form a substantive positive lock between said inner body and said camshaft.
7. The camshaft adjuster as in claim 1 , wherein said control unit controls said hydraulic medium guides and wherein said control unit is positioned outside of said camshaft.
8. The camshaft adjuster as in claim 1 , wherein said insert piece provides a hydraulic medium guide from said camshaft to said control unit.
9. The camshaft adjuster as in claim 3 , wherein said insert piece and said transfer unit provide at least one hydraulic medium guide from said camshaft to said control unit.
10. The camshaft adjuster as in claim 1 , further comprising at least one additional hydraulic medium guide for providing hydraulic medium to said control unit, wherein said at least one additional hydraulic medium guide charges the camshaft adjuster with control oil via said at least one hydraulic medium guide.
11. The camshaft adjuster as in claim 1 , wherein said control unit is a hydraulic control valve.
12. The camshaft adjuster as in claim 1 , wherein said at least one hydraulic medium guide is in the form of a hydraulic medium circuit.
13. The camshaft adjuster as in claim 1 , further comprising a locking device and a camshaft bearing wherein said at least one hydraulic medium guide serves to supply the camshaft adjuster, said looking device and said hydraulic medium guide.
14. A camshaft adjuster as in claim 1 , further comprising an impulse wheel, which is coupled to said camshaft.
15. The camshaft adjuster as in claim 1 , wherein said insert part is formed from at least one part.
16. The camshaft adjuster as in claim 1 , wherein said insert part is formed from a plurality of parts.
17. The camshaft adjuster as in claim 1 , wherein the camshaft adjuster can be applied with hydraulic medium in a radial manner from said camshaft.
18. The camshaft adjuster as in claim 1 , wherein said insert part is formed from sheet metal formed parts.
19. The camshaft adjuster as in claim 1 , wherein said insert part is formed from pipes.
20. The camshaft adjuster as in claim 1 , wherein said insert part has at least one non-coaxial channel having a cross-section that is uniform over its axial length.
21. The camshaft adjuster as in claim 20 , wherein said insert part forms at least one non-coaxial channel together with said camshaft.
22. The camshaft adjuster as in claim 1 , wherein said insert part is formed from at least two sheet-metal parts which are permanently connected to each other via a connection method taken from the group consisting of: welding, soldering, gluing, crimping, riveting, pressing, shrinking, in place and pass through joining.
23. The camshaft adjuster as in claim 1 , wherein said insert part has at least one radial bore and said camshaft has at least one corresponding radial bore wherein said at least one insert part radial bore is larger in diameter than said corresponding at least one camshaft radial bore.
24. The camshaft adjuster as in claim 1 , wherein the camshaft adjuster can be applied with hydraulic medium in an axial manner from said camshaft.
25. The camshaft adjuster as in claim 1 , wherein said insert part has at least one non-coaxial contour, having a cross-section that is uniform over its axial length.
26. The camshaft adjuster as in claim 1 , wherein said insert part has at least one non-coaxial contour having a cross-section that is variable over its axial length.
27. The camshaft adjuster as in claim 25 , wherein said insert part forms said at least one non-coaxial contour together with said camshaft.
28. The camshaft adjuster as in claim 26 , wherein said insert part forms said at least one non-coaxial contour together with said camshaft.
29. The camshaft adjuster as in claim 1 , wherein said inner body is inserted onto said camshaft to form a substantive non-positive lock between said inner body and said camshaft.
30. A camshaft adjuster for an internal combustion engine comprising:
a) a camshaft;
b) a setting unit comprising:
i) an inner body coupled to said camshaft so as to rotate with it wherein said inner body is inserted onto said camshaft to form a substantive positive lock between said inner body and said camshaft; and
ii) an outer body that is coupled to said inner body and mounted in an outer region relative to said inner body and said camshaft;
c) a control unit for adjusting an angle of said camshaft; and
d) at least one insert part disposed inside an inner region of said camshaft wherein said insert part and said camshaft form at least one hydraulic medium guide, wherein said at least one hydraulic medium guide is in communication with said control unit and wherein said setting unit is in communication with said at least one hydraulic medium guide so that said setting unit can be controlled by said control unit to set an angle of said camshaft.