Exhaust gas turbocharger for an internal combustion engine and a corresponding method
AssigneeDaimlerChrysler AG
InventorsSiegfried Sumser, Peter Fledersbacher, Friedrich Wirbeleit, Juergen Willand, Hans-Georg Lehmann
Life of this patent
Estimating the term…
Abstract
An exhaust gas turbocharger for an internal combustion engine includes an exhaust gas turbine in the exhaust gas system and a compressor in the intake system for producing compressed charge air. A compressor rotor is arranged in a compressor inlet channel. In order to achieve a greater range of utilization, an adjustable shutoff element is arranged in the compressor inlet channel, upstream from the compressor rotor, for variable adjustment of the effective cross-section.
Claims14
An exhaust gas turbocharger for an internal combustion engine, comprising:
- an exhaust gas turbine configured to be arranged in an exhaust gas system of the internal combustion engine;
- a compressor configured to be arranged in an intake system of the internal combustion engine and configured to produce compressed charge air, the compressor including a compressor inlet channel and a compressor rotor positioned in the compressor inlet channel;
- and
- an adjustable shutoff element arranged in the compressor inlet channel upstream from the compressor rotor, the adjustable shutoff element being configured to variably adjust an effective cross-section of the compressor inlet channel.
An exhaust gas turbocharger for an internal combustion engine, comprising:
- an exhaust gas turbine configured to be arranged in an exhaust gas system of the internal combustion engine;
- a compressor configured to be arranged in an intake system of the internal combustion engine and configured to produce compressed charge air, the compressor including a compressor inlet channel and a compressor rotor positioned in the compressor inlet channel;
- and
- an adjustable shutoff element arranged in the compressor inlet channel upstream from the compressor rotor, the adjustable shutoff element being configured to variably adjust an effective cross-section of the compressor inlet channel, wherein the compressor includes a semi-axial flow inlet cross-section and a radial flow inlet cross-section to the compressor rotor.
An exhaust gas turbocharger for an internal combustion engine, comprising:
- an exhaust gas turbine configured to be arranged in an exhaust gas system of the internal combustion engine;
- a compressor configured to be arranged in an intake system of the internal combustion engine and configured to produce compressed charge air, the compressor including a compressor inlet channel and a compressor rotor positioned in the compressor inlet channel;
- and
- an adjustable shutoff element arranged in the compressor inlet channel upstream from the compressor rotor, the adjustable shutoff element being configured to variably adjust an effective cross-section of the compressor inlet channel, wherein the compressor inlet channel includes an annular collection chamber.
A method of operating an exhaust gas turbocharger for an internal combustion engine, comprising the steps of:
- influencing a charge pressure as a function of one of state quantities and operating quantities of at least one of the exhaust gas turbocharger and the internal combustion engine;
- and
- variably adjusting an effective cross-section in a compressor inlet channel during operation of the internal combustion engine.
A method of operating an exhaust gas turbocharger for an internal combustion engine, comprising the steps of:
- influencing a charge pressure as a function of one of state quantities and operating quantities of at least one of the exhaust gas turbocharger and the internal combustion engine;
- variably adjusting an effective cross-section in a compressor inlet channel during operation of the internal combustion engine;
- and
- setting at least one of a semi-axial flow inlet cross-section and a radial flow inlet cross-section in the compressor inlet channel and a flow inlet cross-section in a turbine in an area of variable turbine geometry so that a charge speed at a high level has a small fluctuation amplitude in a broad operating range of an engine operation.
Dependencies are inferred from the claim text.