Claims
- 1. A device for the continuous variation of a relative angular position between a crankshaft and a camshaft arranged in a cylinder head, said device comprising:
- A) a drive element (2) driven by the crankshaft through a traction means,
- B) a hollow cylindrical sliding sleeve (7) positively locked by a first gearing (8, 9) to the drive element (2) and by a second gearing (10, 11) to the driven element (13),
- C) a double-action hydraulic adjusting piston (6) which is fixed on the sliding sleeve (7) and guided in a housing (3) to axially delimit two pressure chambers (14, 15) which can be connected alternately to a pressure medium supply and a pressure medium discharge,
- D) a sealing of the pressure chambers (14, 15) from each other by a sealing arrangement on the circular ring-shaped adjusting piston (6) and
- E) a sealing between the sliding sleeve (7) and a component situated radially inwardly therefrom by a sealing element
- wherein a sealing ring (28) is arranged positionally fixed on the drive element (2) or on a component directly connected to the drive element (2), and the sealing ring (28) comprises at least one sealing lip (31) which bears with pre-tension against an inner wall (19) of the sliding sleeve (7).
- 2. A device of claim 1 wherein the sealing ring (28) is a double-lipped sealing ring having two axially spaced, spreading sealing lips (31).
- 3. A device of claim 1 wherein the sealing ring (28) is surrounded and stiffened by a sheet metal sleeve (29) by which the sealing ring (28) is positionally fixed on a guide sleeve (22).
- 4. A device of claim 3 wherein the sheet metal sleeve (29) has a larger axial width than a sealing body (32) of the sealing ring (28), on which sealing body (32) sealing lips (31) are formed.
- 5. A device of claim 1 wherein the sealing ring (28) is arranged in a stepped end section (30) of a guide sleeve (22).
- 6. A device of claim 1 wherein a circumferential bevel (23) is arranged on one end of the sliding sleeve (7) in a transition region to an inner wall (19) thereof.
Priority Claims (1)
Number |
Date |
Country |
Kind |
195 46 934.8 |
Dec 1995 |
DEX |
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Parent Case Info
This is a division of Ser. No. 760,842 filed Dec. 5, 1996, now U.S. Pat. No. 5,727,508.
US Referenced Citations (8)
Foreign Referenced Citations (1)
Number |
Date |
Country |
4227619 |
Feb 1993 |
DEX |
Divisions (1)
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Number |
Date |
Country |
Parent |
760842 |
Dec 1996 |
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