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US 2013/0199467 A1Published application
Camshaft adjuster
AssigneeSchaeffler Technologies AG & Co. KG
InventorsJens Hoppe, David Kohler
Life of this patent
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Abstract
A central valve (1) of a camshaft adjuster (2), which has an additional hydraulic fluid passage, which is independent of the other hydraulic fluid passages to the other ports and does not communicate therewith.
Claims10
A central valve of a camshaft adjuster, comprising:
- an outer housing and a control piston arranged within the outer housing,
- an inflow port (P), a plurality of working ports (A, B) and a tank port (T),
- the control piston controls a hydraulic fluid flow from the inflow port (P) to the working ports (A, B),
- the central valve has an independent passage (C) for a separate hydraulic fluid flow, which does not communicate with the inflow port, the working ports or the tank port (P, A, B, T).
1 more element
Dependencies are inferred from the claim text.