Jet pump with integrated diaphragm valve for oil drainage in a crankcase ventilation system of an internal combustion engine
OwnerFrank Eisenhauer, Holger Feldmanninventors
Life of this patent
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Abstract
A jet pump for oil drainage in a crankcase ventilation system of an internal combustion engine, the jet pump including an inlet opening for supplying oil from an oil separator of the internal combustion engine, a driving nozzle for supplying a driving medium, an outlet opening for recirculation of the oil to a cylinder head chamber of the internal combustion engine, and a non-return valve arranged at the inlet opening to prevent a backflow of oil. The non-return valve is configured as a diaphragm valve.
Claims10
A jet pump for oil drainage in a crankcase ventilation system of an internal combustion engine, the jet pump comprising:
- an inlet opening for supplying oil from an oil separator of the internal combustion engine;
- a driving nozzle for supplying a driving medium;
- an outlet opening for recirculation of the oil to a cylinder head chamber of the internal combustion engine;
- and
- a non-return valve arranged at the inlet opening to prevent a backflow of oil,
- wherein the non-return valve is configured as a diaphragm valve.
A method for oil drainage in a crankcase ventilation system of an internal combustion engine, comprising the following steps:
- separating oil from a blowby gas stream in an oil separator;
- feeding the separated oil via an inlet opening into a jet pump;
- suppling a driving medium via a driving nozzle into the jet pump to drive the oil;
- recirculating the driven oil via an outlet opening into a cylinder head chamber of the internal combustion engine;
- and
- preventing a backflow of oil through the inlet opening of the jet pump in a direction towards the oil separator by means of a non-return valve designed as a diaphragm valve.
Dependencies are inferred from the claim text.