Device for the ventilation of the crankcase of an internal combustion engine
AssigneeHengst GmbH & Co. KG
InventorsStephan Ahlborn, Thomas May, Sieghard Pietschner
Life of this patent
Estimating the term…
Abstract
The invention relates to a device (1), for the ventilation of the crankcase (20) of an internal combustion engine (2), with a breather tube (3), running from the crankcase (20) to an inlet manifold (22) on the internal combustion engine (2), in the course of which an oil-mist separator (30) is arranged. The novel device is characterized in that in the course of the breather line (3), a pump device is arranged, by means of which a reduced pressure may be generated in the crankcase (20) relative to ambient pressure.
Claims18
An apparatus for ventilating a crankcase of a combustion engine, comprising a vent line running from the crankcase to an intake pipe of the combustion engine, with an oil-mist separator being arranged in the course of the vent line, wherein a pump unit is provided in the course of the vent line, with the pump unit being able to generate a vacuum pressure in the crankcase that is negative in comparison with atmospheric pressure, and a bypass line with a controllable opening is conducted out of the vent line downstream of the pump unit and to the crankcase.
Dependencies are inferred from the claim text.