Flow-optimized bypass for turbo engines
AssigneeRobert Bosch GmbH
InventorsFriedrich Wirbeleit, Heinz Georg Schmitz, Bodo Becker, Guenther Vogt
Life of this patent
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Abstract
A charging device (supercharger) for internal combustion engines, having at least one turbine part. A mass stream of exhaust gas flows into this via an inflow region, from which a bypass duct branches off for bypassing the at least one turbine part. The bypass duct opens out into a turbine outlet duct at an outlet location in back of the turbine part. The bypass duct is opened or closed either by a first control element situated in the inflow region at the inlet of the bypass duct or by a second control element at the outlet of the bypass duct leading into the turbine outlet duct.
Claims8
A charging device for an internal combustion engine, comprising:
- at least one turbine part, into which a mass stream of exhaust gas flows via an inflow region;
- a bypass duct branching off from the inflow region for bypassing the at least one turbine part and configured to produce a jet-pump effect;
- a turbine outlet duct, the bypass duct opening out into the turbine outlet duct at an outlet location in back of the at least one turbine part;
- a control element for one of opening and closing the bypass duct;
- the control element is a sleeve-shaped, sliding control valve downstream from a ring bypass duct in the turbine outlet duct, and the control element is continuously movable inside a control path between an open, operating position and a closed, end position in the turbine outlet duct;
- and
- wherein the control element has a bevel on its end pointing towards the outlet of the bypass duct, the bevel being complementary to a bevel of a turbine outlet pipe of the housing, and one of (a) sealingly covering the turbine outlet pipe in the end position and (b) being sealed with respect to a housing with the aid of a sealing device.
Dependencies are inferred from the claim text.