Valve train with suction-controlled ring gear/internal gear pump
AssigneeHermann Harle
InventorSiegfried A. Eisenmann
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Abstract
The invention relates to a valve train of an internal combustion engine having hydraulic actuator for controlling a valve control device a function of engine speed and having a pump driven by the engine for supplying the actuator with working fluid. The pump is configured as a suction-controlled ring-gear pump having a sealing web ending over a plurality of pockets and featuring a delivery characteristic as a function of speed which is adapted to the working fluid requirement of said actuator. In addition, an internal gear pump is provided, particularly useful for such a valve train.
Claims20
A valve train for an internal combustion engine
- a) having hydraulic actuator means for adjusting a valve control means as a function of engine speed and
- b) having a pump (100) driven by the engine for supplying the actuator means with working fluid,
- characterized in that
- c) said pump (100) is configured as a suction-controlled ring-gear pump having a sealing web extending over a plurality of pockets (17.1-17.3) and featuring a delivery characteristic as a function of speed which is adapted to the working fluid requirement of said actuator means.
Dependencies are inferred from the claim text.